TECHNICAL FIELD
The disclosure of this application relates to so-called type III traffic barricades.
BACKGROUND
A type III traffic barricade is typically used to alert motorists of a detour, a closed traffic lane, a hazard, etc. and to prevent them from traveling along the closed lane, in the area of the hazard, etc. A type III barricade consists of three highly visible, marked horizontal panels or boards (usually with an orange and white striped pattern) mounted to an upright frame. Since the barricades undergo frequent transportation from one site to another, they should be capable of easy and secure transportation, quick and easy disassembly and reassembly by road work crews, and compact storage. In addition, since the barricades are usually sold to the end user (typically a state or local traffic agency, a highway or road construction or maintenance entity, etc.), they should be capable of being securely and compactly packaged in bulk form for shipment in a disassembled form from the seller to the end user.
When deployed, type III barricades also frequently have a pair of flashing warning lights affixed to a top end thereof. In the event of a collision between a vehicle and a barricade, it is possible for the flashing light to become dislodged from the barrier and crash into the vehicle and cause damage to the vehicle body and/or windshield. It is desirable that the barricade be manufactured in a manner that minimizes this possibility.
SUMMARY
There is disclosed a traffic barricade system wherein each barricade comprises a thermoplastic upright having a pair of opposing, substantially parallel legs and a connecting panel substantially perpendicularly joining the legs, so as to define a generally U-shaped upright. Each leg has an aperture adjacent a bottom end thereof (“leg apertures”) and at least a pair of recessed portions adapted to receive a barricade panel that serves as a warning. The connecting portion also has a recessed portion for receiving a barricade panel, such that, when assembled, the barricade has three generally horizontal barricade panels.
Each leg has an opening into the interior thereof at its bottom (“post receiving aperture”) for interacting with posts on a base portion of the barricade. A pair of recessed portions on the back surface of the connecting panel is adapted to receive a pair of warning lights (“warning light recesses”). A hollow space between the warning light recesses and an adjacent front portion of the upright provides a cushion that deforms the corresponding area of the barricade in the event of a collision between a vehicle and the barricade and absorbs the shock of the collision. The cushion thus serves to decelerate the battery compartment of the light (the heaviest component) in the event of a collision and minimizes the force of impact upon the vehicle from the battery compartment of the warning light. This feature minimizes the chance that the battery compartment will penetrate the cabin of the vehicle and therefore addresses the greatest threat to the windshield/passenger compartment. The cushion may spring back to its original shape after the collision.
The base of each barricade comprises a thermoplastic substantially rectangular base that is substantially equal in width to the width of the uprights. Side members of the base each have the aforementioned post extending from the top surface thereof. A protrusion extends from the top surface of each post and defines a pin. There is a recess in the bottom surface of each base opposite each pin (“base recesses”) and an aperture in the opposite end of each base (“base apertures”).
The features of uprights and bases allows for a variety of configurations, i.e., for shipping from the manufacturer or distributor to the end user, for deployment at the site of a hazard or detour, and for transporting the barricades from one site to another.
In a shipping configuration, the bases are stacked on a pallet such that alternating bases are oriented in a reverse direction relative to one another, the posts of the bases are received into the base apertures of adjacent bases in the stack, and the pins are received into the base recesses of alternating bases. In this manner, the bases interlock with one another and form a cavity. The uprights are inserted into the cavity, such that the pallet with the assembled uprights and bases may be lifted onto truck for transport to the end user. The barricade panels, warning lights, and assembly hardware may be separately packaged for shipment.
In a deployment configuration, uprights are assembled to bases by lifting each upright over a base and lowering it such that the posts are received into the post receiving apertures and thus each upright becomes perpendicularly (and removably) attached to the base.
In a transportation configuration, the uprights are disassembled from the bases and are stacked in an interleaved form, preferably with each in a vertical position, such that the uprights are sandwiched between bases to define a deck. In this configuration, the posts are received into the leg recesses of adjacent uprights and the pins are received into the base recesses of a next base in the deck.
It will be appreciated that the interlocking of the bases and uprights in the shipping and transportation configurations provides for secure stacking, and that the cooperation of the posts and post receiving recesses allows for quick and easy assembly and disassembly.
In a preferred embodiment, the uprights and bases are manufactured using a rotational mold, and substantial portions of the interior thereof are hollow.
DETAILED DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an assembled barricade and illustrates the deployment configuration.
FIG. 2 illustrates the cooperation between an upright and a base.
FIGS. 3A-3D illustrate details of the shipping configuration.
FIGS. 4A-4D illustrate details of the transportation configuration.
FIG. 5 illustrates further details of the upright.
FIG. 6 illustrates an upright with the warning lights affixed thereto.
FIG. 7 illustrates further details of a barricade, the warning light recesses and the manner in which barricade panels are affixed to the uprights.
FIG. 8 illustrates details of the cushion.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
Referring to the drawings, wherein like numerals represent like elements, there is illustrated in FIG. 1 an exemplary barricade 10 according to one embodiment. Barricade 10 comprises a base 12, an upright 14 and a plurality of barricade panels 16 affixed to the upright 14 via bolts 44. As is known, the front facing surfaces of barricade panels 16 are usually marked with orange and white stripes, typically with a highly reflective tape, so as to be highly visible to motorists.
As shown in FIGS. 1 and 2, the base is substantially rectangular in shape and comprises integral posts 20 at one end of the side members 12′ thereof and apertures 38 through the top to the bottom surface of the side members at the opposite ends (“base apertures”). The base is preferably a single, unitary piece of substantially hollow thermoplastic material formed in a rotational mold. As shown, the side members 12′ may have extended wide portions to provide stability.
As also shown in FIGS. 1 and 2, the upright is substantially U-shaped such that the bottom part of the U defines a substantially horizontal top portion of the upright. Thus, the upright is defined by vertical legs 14′ and an integral substantially perpendicular connecting panel 14″. Preferably, the upright is a single, unitary piece of substantially hollow thermoplastic material formed in a rotational mold. The upright comprises recessed portions 26 in the legs 14′ and a recessed portion 26′ in the connecting panel 14″ each adapted to receive a barricade panel 16. The barricade panels may be affixed to the uprights via bolts 44. Holes 46 may be provided at the top of the connecting panel to allow warning lights to be affixed to the upright, as described in more detail below. Openings 24 are provided through the front to the back surface of the legs (“leg apertures”) at ends opposite those joined to the connecting panel. Openings 22 in the bottom of each leg open into the hollow interior thereof, in a direction substantially perpendicular to the direction of the openings 24 and are adapted to receive the posts 20 when assembled in the deployment configuration (“post receiving apertures”). Recesses 30 on the back side of the upright adjacent the connecting panel are adapted to receive the warning lights.
It will be appreciated, for example, from FIG. 5, that the depth of the recesses 26 and recessed portions 26′ is such that, once installed, front surfaces of panels 16 sit slightly below the front surface of the upright, thus minimizing the opportunity for scratching and marring of the panels when the barricades are stacked or decked, and also in the event that a barricade is struck by a vehicle and the upright is propelled face down onto the roadway. Thus, the recesses provide a number of benefits including: (i) they remove the guesswork out of how to vertically space the panels on the uprights; (ii) they allow for consolidated stacking of bases and uprights when the boards are assembled; and (iii) they minimize the opportunity for damage to the reflective tape on the panels (the tape is the most expensive part of the panel). As best shown in FIGS. 2 and 7, inwardly facing dimples 27 are provided on the front surface of each of the barricade panel recesses 26 and 26′ (FIG. 2) and inwardly facing cones 29 are provided on the back surface of the upright opposite each dimple 27. The dimples and cones are adapted to receive a drill bit for drilling holes through the recesses 26, 26″ and thus provide guidance to an assembler as to where drill the holes for receiving bolts 44.
FIGS. 3A-3D illustrate the shipping configuration and the details of the uprights and bases that allow them to be securely stacked for shipment. As shown in FIG. 3A, a plurality of bases 12 may be stacked on a pallet 48. The stacked bases define a cavity 50 into which a plurality of uprights 14 may be inserted. FIGS. 3B, 3C and 3D illustrate the manner in which the posts 20, base apertures 38, bases recesses 42 and protrusions 40 cooperate. As shown, each base 12 is oriented in a reverse direction relative to an adjacent base in the stack. Thus, base 12a is oriented 180 degrees relative to base 12b, and base 12c is oriented 180 degrees relative to base 12b and is oriented in the same direction as base 12a. In this manner, and as best shown in FIGS. 3C and 3D, the posts 20 are received into the base apertures 38 of adjacent bases in the stack and the protrusions 40 are received into the base recesses 42 of alternating bases such that the bases interlock with one another. Particularly, in this configuration, the posts 20b of bases 12b are received into base apertures 38 of base 12a, the protrusions on the top of post 20c of base 12c are received into the base recesses 42a of base 12a, and so on. The detail encircled by circle 52 (FIG. 3C) is illustrated in FIG. 3D and better illustrates the interlocking features of the bases when stacked for shipment. Thus, the bases may be securely stacked to prevent shifting, damage, etc. during shipment. As shown in FIG. 3A, each upright may be vertically oriented 180 degrees relative adjacent to each other when placed in the cavity 50 for compact and secure storage during shipment. Thus, as shown, upright 14a may be vertically oriented 180 degrees relative to upright 14b, and upright 14c may be vertically oriented 180 degrees relative to upright 14d and in the same orientation as upright 14a.
FIGS. 4A-4D illustrate the transportation configuration and the details of the uprights and bases that allow them to be securely stacked for transportation between sites, from a storage depot or the like to a site, or from a site to a storage depot. This configuration is usually employed following disassembly of an assembled barricade (i.e., FIG. 1) described below. As shown in FIGS. 4A and 4B, a plurality of bases 12 and uprights 14 may be interleaved such that the uprights are sandwiched between bases to form a deck of bases and uprights. In this configuration, the uprights are oriented in the same direction relative to one another, the bases are oriented in the same direction relative to one another. Thus, the bases and uprights are oriented such that each post 20 of a base is received into the post receiving aperture 24 of an adjacent upright, and further such that each protrusion 40 on a post 20 is received into the base recess 42 of a next base in the deck. FIGS. 4C and 4D provide further detail. As shown, adjacent bases 12a and 12b are separated by an interleaved upright 14. Posts 20b of base 12b are received into the post receiving apertures 24 of upright 14 and protrusions 40b on post 20b are received into the base recesses 42a of base 12a. The posts 20a and protrusions 40a of base 12a are received the post receiving apertures and base recesses of a next pair of uprights and bases (i.e., those above base 12a in FIG. 4C), and base recesses 42b of base 12b receive the protrusion of a base that, in reference to FIG. 4C, is below base 12b. Again, due to the interlocking feature of the posts and post receiving apertures, and the protrusions and base recess, the deck of interleaved uprights and bases is compact, and is secure and prevented from shifting during transport. The detail encircled by circle 54 is illustrated in FIG. 4D and better illustrates the interlocking arrangement of the uprights and bases in the transportation configuration.
FIGS. 1, 2, and 7 illustrate the deployment configuration (note that the warning lights are not illustrated in these Figs. and that panels 16 are not shown in FIG. 2). It will be appreciated that deployment merely requires that an upright be placed over a base and then lowered such that posts 20 on the base are received into the post receiving apertures 22 of the upright. A friction fit between the interior surface of the post receiving aperture and the exterior surface of the post ensures that the upright is easily and securely fastened to the base yet is easily removable by pulling the upright from the base.
As shown in various ones of the Figs., a pair of holes 46 is disposed adjacent opposite sides each upright. The holes 46 extend from the front surface of each upright, above the recessed portion 26′ thereof (FIGS. 1 and 2), to the surfaces of the warning light recesses 30 (FIG. 7). The warning light recesses are adapted to receive warning lights 28 (FIGS. 6 and 8); the warning lights are affixed to the upright via bolts 56 that, when tightened, urge the back surface of the warning light 28 against the surface 34 of the warning light recess 30. The proportions of the walls of the warning light recesses 30 are such that, when the warning light is inserted into warning light recess 30 and bolted to the upright, the bottom inside corner thereof is urged against a corresponding corner of the warning light recess 30, as shown at 58 in FIG. 8. This proportioning aids in preventing the warning light from spinning about its retaining bolt 58, and thus assists in keeping the warning light visible to oncoming motorists.
As mentioned, the uprights and bases are preferably formed of a polymeric or thermoplastic material via a rotational molding process. The use of rotational molding provides several advantages such as providing increased stiffness and stability due to additional material being deposited at corners of the bases and uprights during molding, as contrasted to blow molding or injection molding. Another advantage of manufacturing the uprights via rotational molding is that it facilitates the creation of a hollow interior portion designed to provide cushioning in the event of a collision between a vehicle and a barricade. As shown in FIG. 8, during the molding process, a space or hollow portion 36 is created between wall 32 of the upright and wall 34 of the warning light recess 30 that provides the cushion. The hollow functions as a cushion since it allows the walls to deform in the event of a collision between a vehicle and the barricade and absorbs the shock of the collision. The cushion thus serves to decelerate the battery compartment of the light (the heaviest component) in the event of a collision and minimizes the force of impact upon the vehicle from the battery compartment of the warning light. This feature minimizes the chance that the battery compartment will penetrate the cabin of the vehicle and therefore addresses the greatest threat to the windshield/passenger compartment. The cushion may spring back to its original shape after the collision.
Patent Application
20250179744
