BACKGROUND
The present disclosure relates to rumble strip assemblies, and to the use of rumble strip assemblies to raise levels of driver attention on roadways.
Driver errors due to lack of driver attention and distracted driving contribute significantly to the occurrence and the severity of vehicle crashes, and to pedestrian injuries and fatalities. However, changing driver behavior is difficult. While law enforcement is an effective mechanism to improve driver behavior (e.g., through issuance of tickets and monitoring/patrol), it is impossible both from a cost and logistical standpoint to have law enforcement presence at each and every location along a roadway. Thus, there is a need for systems and mechanisms that will effectively raise levels of driver attention on roadways, and that will facilitate a reduction in the number and/or severity of crashes.
SUMMARY
In accordance with one construction, an automated rumble strip assembly includes a frame having a top surface configured to support a vehicle tire moving along the frame. The automated rumble strip assembly also includes a plurality of elongate members, each elongate member having a top surface. The automated rumble strip assembly also includes an actuator assembly configured to move the elongate members from a first position where each of the top surfaces of the elongate members is flush with the top surface of the frame, to a second position where each of the top surfaces of the elongate members is recessed relative to the top surface of the frame.
Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an automated rumble strip assembly according to one embodiment.
FIG. 2 is a perspective view of the automated rumble strip assembly, with a frame removed.
FIG. 3 is a perspective, exploded view of an access frame and an access plate of the automated rumble strip assembly.
FIG. 4 is a perspective, exploded view of an elongate member of the automated rumble strip assembly.
FIG. 5 is a cross-sectional view of the elongate member, taken through lines 5-5 in FIG. 4.
FIG. 6 is a perspective view of an end plate of the automated rumble strip assembly.
FIG. 7 is a perspective view of an actuator assembly of the automated rumble strip assembly.
FIG. 8 is a perspective, exploded view of the actuator assembly.
FIG. 9 is a side view of a portion of both the actuator assembly and the elongate member of FIG. 4.
FIGS. 10A and 10B illustrate a first, initial raised position of the elongate members.
FIGS. 11A and 11B illustrate a second, lowered position of the elongate members, based on a first activation of the actuator assembly.
FIGS. 12A and 12B illustrate a third, raised position of the elongate member, based on a second activation of the actuator assembly.
FIGS. 13 and 14 are perspective views of a lower plate of the automated rumble strip assembly.
FIG. 15 is a perspective view of the automated rumble strip assembly, with the elongate members removed.
FIG. 16 is a cross-sectional view of the automated rumble strip assembly, taken along lines 16-16 in FIG. 15.
FIG. 17 is a cross-sectional view of the automated rumble strip assembly, taken along lines 17-17 in FIG. 15.
FIG. 18 is a cross-sectional view of the automated rumble strip assembly, taken along lines 18-18 in FIG. 15.
FIG. 19 is a cross-sectional view of the automated rumble strip assembly, taken along lines 19-19 in FIG. 15.
FIGS. 20-22 are perspective, front, and side views respectively of reinforcing elements of the automated rumble strip assembly.
FIG. 23 is a schematic illustration of a wiring system for the automated rumble strip assembly.
FIG. 24 is a perspective view of an automated rumble strip assembly according to another embodiment.
FIG. 25 is a perspective view of the automated rumble strip assembly of FIG. 24, with a frame removed.
FIG. 26 is a perspective, exploded view of an elongate member of the automated rumble strip assembly of FIG. 24.
FIG. 27 is a cross-sectional view of the elongate member, taken through lines 27-27 in FIG. 26.
FIG. 28 is a perspective view of an end plate of the automated rumble strip assembly of FIG. 24.
FIG. 29 is a perspective view of an actuator assembly of the automated rumble strip assembly of FIG. 24.
FIG. 30 is a perspective, exploded view of the actuator assembly of FIG. 29.
FIG. 31 is a side view of a portion of both the actuator assembly of FIG. 29 and the elongate member of FIG. 26.
FIG. 32 is a schematic illustration of a wiring system for the automated rumble strip assembly of FIG. 24.
FIG. 33 is a perspective view of a lower plate of the automated rumble strip assembly of FIG. 24.
FIG. 34 is a perspective view of the automated rumble strip assembly of FIG. 23, with the elongate members removed.
FIG. 35 is a cross-sectional view of the automated rumble strip assembly of FIG. 24, taken along lines 35-35 in FIG. 34.
FIG. 36 is a cross-sectional view of the automated rumble strip assembly of FIG. 24, taken along lines 36-36 in FIG. 34.
FIG. 37 is a cross-sectional view of the automated rumble strip assembly of FIG. 24, taken along lines 37-37 in FIG. 34.
FIGS. 38-40 are perspective, front, and side views respectively of reinforcing elements of the automated rumble strip assembly of FIG. 24.
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limited.
DETAILED DESCRIPTION
FIGS. 1-22 illustrate an automated rumble strip assembly 10. The automated rumble strip assembly 10 may be used to raise a level of driver attention on roadways, and to facilitate a reduction in a number and/or severity of crashes. In some constructions, the automated rumble strip assembly 10 is sized and shaped to be integrally formed as part of a newly constructed roadway. In other constructions, the rumble strip assembly 10 is sized and shaped so as to be a retrofit for an existing roadway.
With reference to FIGS. 1-3, the automated rumble strip assembly 10 includes a frame 14. In the illustrated construction the frame 14 is a generally box-like structure. In other constructions the frame 14 has other shapes and/or sizes than that illustrated. The frame 14 includes a main housing 18 having a top surface 20 (e.g., a planar top surface), a bottom surface 21, and at least one side surface 22 that extends (e.g., perpendicularly and downwardly) from the top surface 20. In the illustrated construction the main housing 18 is made of concrete, although in other constructions the main housing 18 is made of material other than concrete.
With continued reference to FIGS. 1-3, the frame 14 also includes access assemblies 26 disposed along one of the side surfaces 22. Each access assembly 26 includes its own access frame 30 (FIGS. 2 and 3) coupled to one of the side surfaces 22 with welded studs 34, and an access plate 38 coupled to the access frame 30 with access plate bolts 42 (FIGS. 1 and 3). The access plates 38 may be removed to access components inside of the main housing 18, and to inspect, repair and/or replace the components. While the illustrated construction includes two access assemblies 26, other constructions include different numbers of access assemblies 26 than that illustrated. In some constructions, the frame 14 does not include any access assemblies 26. In some constructions, the access assembly or assemblies 26 are located along a different side surface 22 than that illustrated, or are located along the top surface 20 of the main housing 18.
With reference to FIGS. 1 and 2, the frame 14 also includes edge plates 44 that provide added structural stability to the automated rumble strip assembly 10. In the illustrated construction the frame 14 includes two edge plates 44 that fit over opposite edges of the main housing 18, and are coupled to the main housing 18 with welded studs 46 (FIG. 2). The edge plates 44 each have a generally L-shaped angled profile, with one portion of each of the L-shaped angled profiles contacting the top surface 20 of the main housing 18, and the other portion contacting one of the side surfaces 22. In some constructions, the frame 14 includes a different number of edge plates 44 than that illustrated, and/or includes edge plates 44 having different shapes and/or sizes than that illustrated. In some constructions, the frame 14 does not include any edge plates 44.
With continued reference to FIGS. 1 and 2, the frame 14 further includes guiding angle plates 50 that provide added structural stability to the automated rumble strip assembly 10. In the illustrated construction, the frame 14 includes five pairs of guiding angle plates 50 that are each coupled to the top surface 20 of the main housing 18 with welded studs 54 (FIG. 2), and extend parallel to one another along the top surface 20. The guiding angle plates 50 each include a top surface 56 (e.g., a planar top surface). In some constructions, the frame 14 includes a different number of guiding angle plates 50 than that illustrated, and/or includes guiding angle plates 50 having different shapes and/or sizes than that illustrated. In some constructions, the frame 14 does not include any guiding angle plates 50.
With reference to FIGS. 1 and 15, the frame 14 also includes a plurality of elongate apertures 58 that are open and exposed along the top surface 20 of the main housing 18. As illustrated in FIG. 1, each of the elongate apertures 58 is positioned between a pair of the guiding angle plates 50, and extends parallel to each of the other elongate apertures 58.
With reference to FIGS. 1, 2, and 4-6, the automated rumble strip assembly 10 also includes a plurality of movable, elongate members 62 that are disposed at least partially within the frame 14. In the illustrated construction the automated rumble strip assembly 10 includes five elongate members 62 that are spaced equally apart from one another and are parallel to one another. However, in other constructions the number and/or arrangement of elongate members 62 is different.
With reference to FIG. 4, each of the elongate members 62 includes an upper body 66. Each of the upper bodies 66 is generally rectangular in cross-section, and includes a top surface 70. In the illustrated construction, each of upper bodies 66 is sized and shaped to move within one of the elongate apertures 58 (e.g., along the direction of the arrows in FIG. 1).
With continued reference to FIG. 4, each of the elongate members 62 also includes at least one support member 74 coupled to and extending beneath the upper body 66. The support members 74 support the upper body 66. In the illustrated construction, each of the elongate members 62 includes four support members 74 extending perpendicularly below the upper body 66. In other constructions, the elongate members 62 include a different number and/or arrangement of support members 74.
With continued reference to FIG. 4, each of the elongate members 62 includes at least one base portion 78 that is coupled to and disposed below the support member 74. In the illustrated construction, each of the elongate members 62 includes two base portions 78. Each of the base portions 78 is coupled to two of the support members 74. In other constructions, the elongate members 62 include a different number and/or arrangement of base portions 78.
With continued reference to FIG. 4, each of the elongate members 62 also includes at least one elongate member access plate 82 that is coupled to the upper body 66 with bolts 86. When the access plate 82 is removed, an access frame 90 and lifting rod 91 are exposed inside of the upper body 66. In some constructions, the lifting rod 91 may be used to lift and/or move the elongate member 62. While the illustrated construction includes two access plates 82, other constructions include different numbers of access plates 82 than that illustrated. In some constructions, the elongate members 62 do not include any access plates 82, access plate frames 90, and/or lifting rods 91. In some constructions, the access plates 82 are located along a different surface of the elongate member 62 than that illustrated.
With reference to FIG. 5, each elongate member 62 also includes a dampening material 94 disposed within the upper body 66. The dampening material 94 at least partially fills an interior, hollow space in the upper body 66, and acts to dampen sound and/or vibrations as a vehicle travels over the automated rumble strip assembly 10. In some constructions, the dampening material is sand or fluid such as water or oil, although other constructions include different materials. In some constructions, the upper body 66 does not include any dampening material.
With reference to FIGS. 2 and 6, the automated rumble strip assembly 10 also includes end plates 98 that are coupled to the main body 18, to provide added structural stability to the automated rumble strip assembly 10 and guidance for the elongate members 62. In the illustrated construction, the end plates 98 are coupled to the main body 18 with welded studs 102. In some constructions the automated rumble strip assembly 10 does not include end plates 98.
With reference to FIGS. 7-12, the rumble strip assembly 10 also includes an actuator assembly 106. In the illustrated construction, the actuator assembly 106 is disposed entirely within the main housing 18 of the frame 14. However, in other construction at least a portion of the actuator assembly 106 is disposed outside of the main housing 18. The actuator assembly 106 that moves the elongate members 62 from a first position (FIGS. 1, 10A, 10B) where each of the top surfaces 70 (FIGS. 4 and 5) of the elongate members 62 is at a first distance relative to a top surface of the frame 14, to a second position (FIGS. 11A, 11B) where each of the top surfaces 70 of the elongate members 62 is at a second, different distance relative to the top surface of the frame 14. In the illustrated construction, the top surface of the frame 14 corresponds to the top surfaces 56 of the guiding angle plates 50. In some constructions, the top surface of the frame 14 corresponds to the top surface 20 of the main housing 18. In the illustrated construction, each of the top surfaces 70 is flush relative to the top surface of the frame 14 in the first position, and is recessed relative to the top surface of the frame 14 in the second position.
With continued reference to FIGS. 7-12, the actuator assembly 106 includes a first motor 110 and a first wedge plate 114 coupled to and driven linearly by the first motor 110. In the illustrated construction, the first wedge plate 114 includes a first main body 118 and five separate first arms 122 (FIGS. 7 and 8) that extend parallel to one another from the first main body 118. The actuator assembly 106 also includes a second motor 126 and a second wedge plate 130 coupled to and driven linearly by the second motor 126. In the illustrated construction, each of the motors 110, 126 is a high-force electric cylinder, although other constructions include different types of motors. For example, in some constructions the motors 110, 126 are hydraulic cylinders or pneumatic cylinders. In the illustrated construction, the second wedge plate 130 includes a second main body 134 and five separate second arms 138 (FIGS. 7 and 8) that extend parallel to one another from the second main body 134. In other constructions the number of first and second arms 122, 138 is different than that illustrated.
With continued reference to FIGS. 7-12, the first and second motors 110, 126 drive the first wedge plate 114 and the second wedge plate 130 toward and away from one another in opposite directions. The first and second motors 110, 126 are coupled together with a thrust block 142 and thrust block bolts 146 (FIG. 8), such that the first and second motors 110, 126 are disposed between the first wedge plate 114 and the second wedge plate 130. As illustrated in FIG. 8, the first motor 110 is coupled to a first wedge connection plate 150, and the first wedge connection plate 150 is coupled to the first wedge plate 114, with first wedge connection bolts 154. The second motor 126 is coupled to a second wedge connection plate 158, and the second wedge connection plate 158 is coupled to the second wedge plate 130, with second wedge connection bolts 159.
With reference to FIGS. 7-12 and 23, the automated rumble strip assembly 10 further includes a controller 160 (FIG. 23) coupled to the actuator assembly 106. In the illustrated construction the controller 160 is coupled to both the first motor 110 and the second motor 126 (although only the first motor 110 is shown in FIG. 23), and controls operation of the first and second motors 110, 126. In some constructions the controller 160 communicates wirelessly with the first and second motors 110, 126. In some constructions the controller 160 is disposed remotely from the actuator assembly 106 and from the frame 14.
With continued reference to FIGS. 7-12, when the first and second motors 110, 126 are actuated via the controller 160 in a first manner, the first and second wedge plates 114, 130 move linearly toward one another and toward the first and second motors 110, 126, thereby moving the plurality of elongate members 62 from the first position (FIGS. 10A, 10B) to the second position (FIGS. 11A, 11B), where the elongate members 62 are recessed. When the first and second motors 110, 126 are actuated via the controller 160 in a second manner, the first and second wedge plates 114, 130 move linearly away from one another and away from the first and second motors 110, 126, thereby moving the plurality of elongate members 62 from the second position (FIGS. 11A, 11B) back to the first position (FIGS. 12A, 12B), where the elongate members 62 are raised.
With reference to FIG. 9, each of the first arms 122 (as well as the second arms 138) includes a first surface 162, a second surface 166, a third surface 170, a fourth surface 174, and a fifth surface 178. The first surface 162, the third surface 170, and the fifth surface 178 are parallel to one another and are parallel to the top surface of the frame 14 (e.g., to the top surfaces 56 or the top surface 20). The second surface 166 extends between the first surface 162 and the third surface 170, and is transverse to both the first surface 162 and the third surface 170. The fourth surface 174 extends between the third surface 170 and the fifth surface 178 and is transverse to both the third surface 170 and the fifth surface 178. Each of the first arms 122 (as well as the second arms 138) also includes a lower surface 180.
With continued reference to FIG. 9, each of the base portions 78 of the elongate members 62 includes a first engagement surface 182, a second engagement surface 186, and a third engagement surface 190. The first engagement surface 182 and the third engagement surface 190 are parallel to one another and are parallel to the top surface of the frame 14 (e.g., to the top surfaces 56 or the top surface 20). The second engagement surface 186 extends between the first engagement surface 182 and the third engagement surface 190 and is transverse to both the first engagement surface 182 and the third engagement surface 190.
With continued reference to FIG. 9, when one of the elongate members 62 is in the first position, the first engagement surface 182 of the base portion 78 is engaged with the third surface 170 of the first arm 122, the second engagement surface 186 of the base portion 78 is engaged with the fourth surface 174 of the first arm 122, and the third engagement surface 190 of the base portion 78 is engaged with the fifth surface 178 of the first arm 122.
With continued reference to FIG. 9, when the elongate member 62 is in the second position (e.g., recessed relative to the top surface of the frame 14), the first engagement surface 182 of the base portion 78 is engaged with the first surface 162 of the first arm 122, the second engagement surface 186 of the base portion 78 is engaged with the second surface 166 of the first arm 122, and the third engagement surface 190 of the base portion 78 is engaged with the third surface 170 of the first arm 122.
With continued reference to FIG. 9, in the illustrated construction when the elongate member 62 moves from the first position to the lowered second position (i.e., when the first arm 122 has moved to the position illustrated in FIG. 9), the first engagement surface 182 of the base portion 78 initially slides along the third surface 170 of the first arm 122, and the third engagement surface 190 of the base portion 78 slides along the fifth surface 178 of the first arm 122. The second engagement surface 186 of the base portion 78 slides along the second surface 166 of the first arm 122 until the first engagement surface 182 of the base portion 78 is engaged with the first surface 162 of the first arm 122 and the second engagement surface 186 of the base portion 78 is engaged with the second surface 166 of the first arm 122 and the third engagement surface 190 of the base portion 78 is engaged with the third surface 170 of the first arm 122.
While only a single base portion 78 and a single first arm 122 are illustrated in FIG. 9, the same arrangement and sliding movement described above simultaneously occurs at each of the other base portions 78 and each of the other first and second arms 122, 138 during operation. That is, when the first and second motors 110, 126 are actuated, the elongate members 62 move in unison, and the base portions 78 of the elongate members 62 slide together relative to the first and second arms 122, 138. This arrangement results in a smooth, consistent movement of the elongate members 62 between the first position and the second position, and also from the second position back to the first position.
With reference to FIGS. 2, 7, 13, 14, and 17-19 in the illustrated construction the automated rumble strip assembly 10 also includes lower plates 194. The lower plates 194 are disposed within the main housing 18 of the frame 14, and are positioned below the first and second wedge plates 114, 130. The lower plates 194 are coupled to the main housing 18 with welded studs 196. The lower plates 194 provide added stability and guidance for the first and second wedge plates 114, 130 and for the actuator assembly 106. For example, in some constructions the lower surfaces 180 of the first and second arms 122, 138 slide along the lower plates 194. In some constructions the lower plates 194 are not provided.
With reference to FIGS. 18 and 19, in the illustrated construction the automated rumble strip assembly 10 also includes a drain pipe 198 disposed below the lower plates 194. The drain pipe 198 permits water or other material to pass out of the frame 14.
With reference to FIGS. 17-19, in the illustrated construction the automated rumble strip assembly 10 also includes at least one electrical conduit 202. In some constructions, the electrical conduit or conduits 202 provide space in the frame 14 for electricity and/or control signals to be delivered to the first and second motors 110, 126.
With reference to FIGS. 16-22, in the illustrated construction the automated rumble strip assembly 10 also includes a plurality of reinforcing elements 206. The reinforcing elements 206 provide added structural stability to the frame 14 and to the overall automated rumble strip assembly 10. In some constructions the reinforcing elements 206 are steel rebar elements, although other constructions include different materials or arrangements of reinforcing elements 206 than that illustrated.
With reference to FIG. 23, in the illustrated construction the controller 160 is coupled to each of the motors 110, 126 through one or more power cables 210 and control cables 214, and controls operation of the motors 110, 126. With reference to FIGS. 2 and 23, the automated rumble strip assembly 10 also includes at least one object detector to detect the presence of an object (e.g., vehicle) on the automated rumble strip assembly 10. In the illustrated construction the automated rumble strip assembly 10 includes a first object detector 218 (FIGS. 2 and 23) and a second object detector 222 (FIG. 23). The first object detector 218 includes an inductive loop wire 226 that is coupled to the controller 160 and wraps around the elongate members 62 (FIG. 2) inside of the frame 14. The second object detector 222 is a load cell that is coupled to the controller 160 with a cable 230. In other constructions a different number, arrangement, and/or type of object detector are provided. For example, in some constructions the object detector(s) is one of a piezoelectric wire, a camera detector, an infrared detector, a probe sensor, or an ultrasonic sensor.
With reference to FIG. 23, in the illustrated construction the controller 160 is configured to activate the motors 110, 126 and move the elongate members 62 from the first position to the second position only when the object detector detects that a vehicle is not positioned on the frame 14. This ensures that the automated rumble strip assembly 10 does not waste energy or movement, and is only used when a vehicle or vehicles are passing over the automated rumble strip assembly 10. In some constructions the controller 160 is configured to specifically detect pedestrians, trains, cars, or other specific objects (e.g., based on measurements or signals received from the object detector(s)), depending on how and where the automated rumble strip 10 is being used. For example, in some constructions the automated rumble strip assembly 10 is used at railroad crossings to raise driver awareness. In some constructions when the object detector senses an object, it sends a signal (e.g., through the cable 230) to the controller 160. The controller 160 then sends a signal through the control cable(s) 214 to the motors 110, 126 to retract the elongate members 62 (i.e., to move the elongate members 62 to the second position), causing rumbles to be formed in the roadway. In some constructions this action is controlled by a timer in the controller 160. For example, in some constructions the motors 110, 126 are activated based on timing, such as in school zones, where it is advantageous to have the elongate members 62 lowered (and rumbles thus formed in the roadway) during times of heavy pedestrian traffic or anticipated heavy pedestrian traffic in the school zones. Once the rumbles are no longer needed, based on time or object detection, the controller 160 checks the object detector to insure there are no vehicles on the automated rumble assembly 10. If no vehicles are detected, the controller 160 then sends a signal through the control cable(s) 214 to the motors 110, 126 to raise the elongate members 62 back to the first position, creating a generally smooth/flat roadway configuration.
FIGS. 24-40 illustrate another automated rumble strip assembly 1010. Similar to the automated rumble strip assembly 10, the automated rumble strip assembly 1010 may be used to raise a level of driver attention on roadways, and to facilitate a reduction in a number and/or severity of crashes. In some constructions, the automated rumble strip assembly 1010 is sized and shaped to be integrally formed as part of a newly constructed roadway. In other constructions, the rumble strip assembly 1010 is sized and shaped so as to be a retrofit for an existing roadway.
With reference to FIGS. 24 and 25, the automated rumble strip assembly 1010 includes a frame 1014. The frame 1014 is a generally box-like structure. In other constructions the frame 1014 has other shapes and/or sizes than that illustrated. The frame 1014 includes a main housing 1018 having a top surface 1020 (e.g., a planar top surface), a bottom surface 1021, and at least one side surface 1022 that extends (e.g., perpendicularly and downwardly) from the top surface 1020. In the illustrated construction the main housing 1018 is made of concrete, although in other constructions the main housing 1018 is made of material other than concrete. In the illustrated construction the frame 1014 does not include access assemblies. However, in some constructions the frame 1014 includes one or more access assemblies such as the access assemblies 26 described above for frame 14.
With continued reference to FIGS. 24 and 25, the frame 1014 further includes edge plates 1044 that provide added structural stability to the automated rumble strip assembly 1010. Similar to the frame 14, the frame 1014 includes two edge plates 1044 that fit over opposite edges of the main housing 1018, and are coupled to the main housing 1018 with welded studs 1046. The edge plates 1044 each have a generally an L-shaped angled profile, with one portion of each of the L-shaped angled profiles contacting the top surface 1020 of the main housing 1018, and another portion contacting one of the side surfaces 1022. In some constructions, the frame 1014 includes a different number of edge plates 1044 than that illustrated, and/or includes edge plates 1044 having different shapes and/or sizes than that illustrated. In some constructions, the frame 1014 does not include any edge plates 1044.
With continued reference to FIGS. 24 and 25, the frame 1014 further includes guiding angle plates 1050 that provide added structural stability to the automated rumble strip assembly 1010. Similar to the frame 14, the frame 1014 includes five pairs of guiding angle plates 1050 that are each coupled to the top surface 1020 of the main housing 1018 with welded studs 1054 (FIG. 25), and extend parallel to one another along the top surface 1020. The guiding angle plates 1050 each include a top surface 1056 (e.g., a planar top surface). In some constructions, the frame 1014 includes a different number of guiding angle plates 1050 than that illustrated, and/or includes guiding angle plates 1050 having different shapes and/or sizes than that illustrated. In some constructions, the frame 1014 does not include any guiding angle plates 1050.
With reference to FIGS. 24 and 34, the frame 1014 also includes a plurality of elongate apertures 1058 that are open and exposed along the top surface 1020 of the main housing 1018. Similar to the apertures 58 in the frame 14, each of the elongate apertures 1058 in the frame 1014 is positioned between a pair of the guiding angle plates 1050, and extends parallel to each of the other elongate apertures 1058.
With reference to FIGS. 24-28, the automated rumble strip assembly 1010 also includes a plurality of movable, elongate members 1062 that are disposed at least partially within the frame 1014. The automated rumble strip assembly 1010 includes five elongate members 1062 that are spaced equally apart from one another and are parallel to one another. However, in other constructions the number and/or arrangement of elongate members 1062 is different.
With reference to FIG. 26, similar to the elongate members 62, each of the elongate members 1062 includes an upper body 1066. Each of the upper bodies 1066 is generally rectangular in cross-section, and includes a top surface 1070. In the illustrated construction, each of upper bodies 1066 is sized and shaped to move within one of the elongate apertures 1058 (e.g., along the direction of the arrows in FIG. 24).
With continued reference to FIG. 26, each of the elongate members 1062 also includes at least one support member 1074 coupled to and extending beneath the upper body 1066. The support members 1074 support the upper body 1066. In the illustrated construction, each of the elongate members 1062 includes four support members 1074 extending perpendicularly below the upper body 1066. In other constructions, the elongate members 1062 include a different number and/or arrangement of support members 1074.
With continued reference to FIG. 26, each of the elongate members 1062 also includes at least one base portion 1078 that is coupled to and disposed below the support members 1074. In the illustrated construction, each of the elongate members 1062 includes two base portions 1078. Each of the base portions 1078 is coupled to two of the support members 1074. In other constructions, the elongate members 1062 include a different number and/or arrangement of base portions 1078.
With continued reference to FIG. 26, each of the elongate members 1062 also includes at least one elongate member access plate 1082 that is coupled to the upper body 1066 with bolts 1086. When the access plate 1082 is removed, an access plate frame 1090 and a lifting rod 1091 are exposed inside of the upper body 1066. In some constructions, the lifting rod 1091 may be used to lift and/or move the elongate member 1062. While the illustrated construction includes two access plates 1082, other constructions include different numbers of access plates 1082 than that illustrated. In some constructions, the elongate members 1062 do not include any access plates 1082, access plate frames 1090, and/or lifting rods 1091. In some constructions, the access plates 1082 are located along a different surface of the elongate member 1062 than that illustrated.
With reference to FIG. 27, each elongate member 1062 also includes a dampening material 1094 disposed within the upper body 1066. The dampening material 1094 at least partially fills an interior, hollow space in the upper body 1066, and acts to dampen sound and/or vibrations as a vehicle travels over the automated rumble strip assembly 1010. In some constructions, the dampening material 1094 is sand or liquid such as water or oil, although other constructions include different materials. In some constructions, the upper body 1066 does not include any dampening material.
With reference to FIGS. 24 and 28, the automated rumble strip assembly 1010 also includes end plates 1098 that are coupled to the main body 1018, to provide added structural stability to the automated rumble strip assembly 1010 and guidance for the elongate members 1062. In the illustrated construction, the end plates 1098 are coupled to the main body 1018 with welded studs 1102. In some constructions the automated rumble strip assembly 1010 does not include end plates 1098.
With reference to FIGS. 29-32, the rumble strip assembly 1010 also includes an actuator assembly 1106. In the illustrated construction the actuator assembly 1106 is disposed entirely within the main housing 1018 of the frame 1014. However, in other construction at least a portion of the actuator assembly 1106 is disposed outside of the main housing 1018. The actuator assembly 1106 moves the elongate members 1062 from a first position where each of the top surfaces 1070 (FIGS. 26 and 27) of the elongate members 1062 is at a first distance relative to a top surface of the frame 1014, to a second position where each of the top surfaces 1070 of the elongate members 1062 is at a second, different distance relative to the top surface of the frame 1014. In the illustrated construction, the top surface of the frame 1014 corresponds to the top surfaces 1056 of the guiding angle plates 1050. In other constructions, the top surface of the frame 1014 corresponds to the top surface 1020 of the main housing 1018. In the illustrated construction, each of the top surfaces 1070 is flush relative to the top surface of the frame 1014 in the first position, and is recessed relative to the top surface of the frame 1014 in the second position.
With continued reference to FIGS. 29-32, the actuator assembly 1106 includes a first motor 1110, a second motor 1112, a third motor 1114, a fourth motor 1116, and a fifth motor 1118. In the illustrated construction, each of the motors 1110, 1112, 1114, 1116, and 1118 is a high-force electric cylinder, although other constructions include different types of motors. For example, in some constructions the motors 1110, 1112, 1114, 1116, and 1118 are hydraulic cylinders or pneumatic cylinders. As illustrated in FIG. 29, the motors 1110, 1112, 1114, 1116, and 1118 are parallel to one another and spaced equally apart from one another. A first wedge plate 1120 and a second wedge plate 1122 are coupled to and driven linearly by the first motor 1110, in opposite directions from one another. A third wedge plate 1124 and a fourth wedge plate 1126 are coupled to and driven linearly by the second motor 1112, in opposite directions from one another. A fifth wedge plate 1128 and a sixth wedge plate 1130 are coupled to and driven linearly by the third motor 1114, in opposite direction from one another. A seventh wedge plate 1132 and an eighth wedge plate 1134 are coupled to and driven linearly by the fourth motor 1116, in opposite directions from one another. A ninth wedge plate 1136 and a tenth wedge plate 1138 are coupled to and driven linearly by the fifth motor 1118, in opposite direction from one another.
With reference to FIG. 30, in the illustrated construction each of the motors 1110, 1112, 1114, 1116, 1118 is coupled to its respective wedge plates 1120, 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138 with a rod clevis 1142, a first connection pin 1146, a clevis bracket 1150, a second connection pin 1154, and ram nuts 1158. In the illustrated construction the actuator assembly 1106 also includes wedge stops 1159 (e.g., coupled to the frame 1014) that limit movement of the wedge plates 1120, 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138.
With reference to FIG. 32, the automated rumble strip assembly 1010 further includes a controller 1160 coupled to the actuator assembly 1106. In the illustrated construction the controller 1160 is coupled to each of the first motor 1110, the second motor 1112, the third motor 1114, the fourth motor 1116, and the fifth motor 1118 (although only the first motor 1110 is shown) through one or more power cables 1162 and control cables 1164, and controls operation of the motors 1110, 1112, 1114, 1116, 1118. In some constructions the controller 1160 communicates wirelessly with the motors 1110, 1112, 1114, 1116, 1118. In some constructions the controller 1160 is disposed remotely from the actuator assembly 1106 and from the frame 1114.
When the motors 1110, 1112, 1114, 1116, 1118 are actuated via the controller 1160 in a first manner, the first wedge plate 1120, the third wedge plate 1124, the fifth wedge plate 1128, the seventh wedge plate 1132, and the ninth wedge plate 1136 move linearly toward the motors 1110, 1112, 1114, 1116, 1118 along a first direction, and the second wedge plate 1122, the fourth wedge plate 1126, the sixth wedge plate 1130, the eighth wedge plate 1134, and the tenth wedge plate 1138 move linearly toward the motors 1110, 1112, 1114, 1116, 1118 along a second, opposite direction, thereby moving the plurality of elongate members 1062 from the first position to the second position (e.g., similar to what is shown in FIGS. 10A, 10B, 11A, and 11B). When the motors 1110, 1112, 1114, 1116, 1118 are actuated via the controller 1160 in a second manner, the first wedge plate 1120, the third wedge plate 1124, the fifth wedge plate 1128, the seventh wedge plate 1132, and the ninth wedge plate 1136 move linearly away the motors 1110, 1112, 1114, 1116, 1118 along a first direction, and the second wedge plate 1122, the fourth wedge plate 1126, the sixth wedge plate 1130, the eighth wedge plate 1134, and the tenth wedge plate 1138 move linearly away from the motors 1110, 1112, 1114, 1116, 1118 along a second, opposite direction, thereby moving the plurality of elongate members 1062 from the second position back to the first position (e.g., similar to what is shown in FIGS. 11A, 11B, 12A, and 12B).
With reference to FIG. 31, each of the wedge plates 1120, 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138 defines an arm that includes a first surface 1166, a second surface 1168, a third surface 1170, a fourth surface 1174, and a fifth surface 1178. The first surface 1166, the third surface 1170, and the fifth surface 1178 are parallel to one another and are parallel to the top surface of the frame 1014. The second surface 1168 extends between the first surface 1166 and the third surface 1170, and is transverse to both the first surface 1166 and the third surface 1170. The fourth surface 1174 extends between the third surface 1170 and the fifth surface 1178 and is transverse to both the third surface 1170 and the fifth surface 1178. Each of the wedge plates 1120, 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138 also includes a lower surface 1180.
With continued reference to FIG. 31, each of the base portions 1078 of the elongate members 1062 includes a first engagement surface 1182, a second engagement surface 1186, and a third engagement surface 1190. The first engagement surface 1182 and the third engagement surface 1190 are parallel to one another and are parallel to the top surface of the frame 1014. The second engagement surface 1186 extends between the first engagement surface 1182 and the third engagement surface 1190 and is transverse to both the first engagement surface 1182 and the third engagement surface 1190.
With continued reference to FIG. 31, when one of the elongate members 1062 is in the first position, the first engagement surface 1182 of one of the base portions 1078 is engaged with the third surface 1170, the second engagement surface 1186 of the base portion 1078 is engaged with the fourth surface 1174, and third engagement surface 1190 of the base portion 1078 is engaged with the fifth surface 1178.
With continued reference to FIG. 31, when the elongate member 1062 is in the second position, the first engagement surface 1182 of the base portion 1078 is engaged with the first surface 1166, the second engagement surface 1186 of the base portion 1078 is engaged with the second surface 1168, and the third engagement surface 1190 of the base portion 1078 is engaged with the third surface 1170.
With continued reference to FIG. 31, when the elongate member 1062 moves from the first position to the second position, the first engagement surface 1182 of the base portion 1078 initially slides along the third surface 1170, and the third engagement surface 190 of the base portion 1078 slides along the fifth surface 1178. The second engagement surface 1186 of the base portion 1078 slides along the second surface 1168 until the first engagement surface 1182 of the base portion 1078 is engaged with the first surface 1166 and the second engagement surface 1186 of the base portion 1078 is engaged with the second surface 1168 and the third engagement surface 1190 of the base portion 1078 is engaged with the third surface 1170.
While only a single base portion 1078 and a single wedge plate 1120 are illustrated in FIG. 9, the same arrangement and sliding movement described above simultaneously occurs at each of the other base portions 1078 and wedge plates 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138 during operation. That is, when the motors 1110, 1112, 1114, 1116, and 1118 are actuated, the elongate members 1062 move in unison, and the base portions 1078 of the elongate members 1062 slide together relative to the wedge plates 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138. This arrangement results in a smooth, consistent movement of the elongate members 1062 between the first position and the second position, and also from the second position back to the first position.
With reference to FIGS. 24, 25, and 32, the automated rumble strip assembly 1010 also includes at least one object detector to detect the presence of an object (e.g., vehicle) on the automated rumble strip assembly 1010. In the illustrated construction the automated rumble strip assembly 1010 includes a first object detector 1194 and a second object detector 1198. The first object detector 1194 includes an inductive loop wire 1202 that is coupled to the controller 1160 and wraps around the elongate members 1062 (FIG. 25) inside of the frame 1114. The second object detector 1198 (FIG. 32) is a load cell that is coupled to the controller 1160 with a cable 1206. In other constructions a different number, arrangement, and/or type of object detector are provided. For example, in some constructions the object detector(s) is one of a piezoelectric wire, a camera detector, an infrared detector, a probe sensor, or an ultrasonic sensor.
With continued reference to FIG. 32, in the illustrated construction the controller 1160 is configured to activate the motors 1110, 1112, 1114, 1116, 1118 and move the elongate members 1062 from the first position to the second position only when the object detector detects that a vehicle is not positioned on the frame 1014. This ensures that the automated rumble strip assembly 1010 does not waste energy or movement, and is only used when a vehicle or vehicles are passing over the automated rumble strip assembly 1010. In some constructions the controller 1160 is configured to specifically detect pedestrians, trains, cars, or other specific objects (e.g., based on measurements or signals received from the object detector(s)), depending on how and where the automated rumble strip assembly 1010 is being used. For example, in some constructions the automated rumble strip assembly 1010 is used at railroad crossings to raise driver awareness. In some constructions when the object detector senses an object, it sends a signal (e.g., through the cable 1206) to the controller 1160. The controller 1160 then sends a signal through the control cable(s) 1164 to the motors 1110, 1112, 1114, 1116, 1118 to retract the elongate members 1062 (i.e., to move the elongate members 1062 to the second position), causing rumbles to be formed in the roadway. In some constructions this action is controlled by a timer in the controller 1160. For example, in some constructions the motors 1110, 1112, 1114, 1116, 1118 are activated based on timing, such as in school zones, where it is advantageous to have the elongate members 1062 lowered (and rumbles thus formed in the roadway) during times of heavy pedestrian traffic or anticipated heavy pedestrian traffic in the school zones. Once the rumbles are no longer needed, based on time or object detection, the controller 1160 checks the object detector to insure there are no vehicles on the automated rumble assembly 1010. If no vehicles are detected, the controller 1160 then sends a signal through the control cable(s) 1164 to the motors 1110, 1112, 1114, 1116, 1118 to raise the elongate members 1062 back to the first position, creating a generally smooth/flat roadway configuration.
With reference to FIGS. 25, 29, 33, and 37, the automated rumble strip assembly 1010 also includes lower plates 1210. The lower plates 1210 are disposed within the main housing 1018 of the frame 1014, and are positioned below the wedge plates 1120, 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138. In some constructions the lower plates 1210 are coupled to the main housing 1018 with welded studs. The lower plates 1210 provide added stability and guidance for the wedge plates 1120, 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138 and for the actuator assembly 1106. For example, in some constructions the lower surfaces 1180 of the wedge plates 1120, 1122, 1124, 1126, 1128, 1130, 1132, 1134, 1136, 1138 slide along the lower plates 1210. In some constructions the lower plates 1210 are not provided.
With reference to FIGS. 36 and 37, in the illustrated construction the automated rumble strip assembly 1010 also includes a drain pipe 1214 disposed below the lower plates 1210. The drain pipe 1214 permits water or other material to pass out of the frame 1014
With reference to FIGS. 35-37, in the illustrated construction the automated rumble strip assembly 1010 also includes at least one electrical conduit 1218. The electrical conduit or conduits 1218 provide space in the frame 1014 for electricity and/or control signals to be delivered to the motors 1110, 1112, 1114, 1116, 1118 and/or object detectors.
With reference to FIGS. 38-40, in the illustrated construction the automated rumble strip assembly 1010 also includes a plurality of reinforcing elements 1222. The reinforcing elements 1222 provide added structural stability to the frame 1014 and to the overall automated rumble strip assembly 1010. In some constructions the reinforcing elements 1222 are steel rebar elements, although other constructions include different materials or arrangements of reinforcing elements 1222 than that illustrated.
Although the invention has been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope and spirit of one or more independent aspects of the invention as described.
Patent Grant
10829900
