Patent Grant
8973507
The present application is a National Phase of International Application Number PCT/JP2009/062319, filed Jul. 6, 2009, and claims priority from, Japanese Application Number 2009-064767, filed Mar. 17, 2009.
The present invention relates to a guide rail type vehicle that runs along a predetermined guideway. More particularly, the present invention relates to a guide rail type vehicle, which is configured so as to be steered by being guided by a guide rail provided on the guideway.
There has been conventionally proposed a bogie for a guide rail type vehicle, which runs along a guide rail provided on a guideway by providing a steering mechanism using guide wheels (for example, see Patent Documents 1 and 2).
As shown in
The bogie 62 includes a guide frame 64 formed in a rectangular shape in a plan view. A pair of guide wheels 65 is rotatably mounted to a vehicle body end side portion 64a of the guide frame 64. Meanwhile, a pair of guide wheels 66 is rotatably mounted to a vehicle body center side portion 64b of the guide frame 64. The guide wheels 65 and 66 are configured so as to rotate while being in contact with the side surfaces of the guide rail 63.
Also, the bogie 62 includes a pair of right and left running wheels 67. A steering lever 68 extending toward the vehicle body end side from the running wheel 67, and a first link lever 69 extending toward the vehicle body center side from the running wheel 67 are provided at the running wheel 67 on the left side relative to the vehicle running direction. An end part 68a on the vehicle body center side of the steering lever 68 and an end part 69a on the vehicle body end side of the first link lever 69 are connected to the running wheel 67 via a rotation shaft 70.
Meanwhile, a second link lever 71 extending toward the vehicle body center side from the running wheel 67 is provided at the running wheel 67 on the right side relative to the vehicle running direction. An end part 71a on the vehicle body end side of the second link lever 71 is connected to the running wheel 67 via a rotation shaft 72. Also, an end part 69b on the vehicle body center side of the first link lever 69 and an end part 71b on the vehicle body center side of the second link lever 71 are connected to each other by a tie rod 73 that extends in the vehicle lateral direction.
An actuator 74 is provided in the guide frame 64 of the bogie 62. The actuator 74 is connected to an end part 68b on the vehicle body end side of the steering lever 68 via a steering rod 75.
Based on the above-described configuration, in the conventional bogie 62, a distance L between the center of the guide frame 64 and the connection position of the actuator 74 and the steering rod 75 is changed by the actuator 74. Accordingly, the pair of right and left running wheels 67 is steered more than the turning angle of the guide frame 64.
However, the aforementioned conventional configuration has a problem as described below when the bogie 62 runs along a curved section of the guide rail 63.
For example, when explained by using the running wheel 67 on the left side relative to the running direction as an example, the running wheel 67 on the left side is positioned outside the curved section in the case of a right-hand curve, and the running wheel 67 on the left side is positioned inside the curved section in the case of a left-hand curve even when the curvature radii of the curved sections of the guide rail 63 are equal to each other. Here, if the actuator 74 performs the same control in both the cases of the right-hand curve and the left-hand curve, the running wheel 67 is steered in the same manner in both the case in which the running wheel 67 on the left side is positioned inside the curved section and the case in which the running wheel 67 on the left side is positioned outside the curved section. That is, if the actuator 74 performs the same control in both the cases of the right-hand curve and the left-hand curve, the steering angle of the running wheel 67 positioned inside the curved section, and the steering angle of the running wheel 67 positioned outside the curved section are not equal in the cases of the right-hand curve and the left-hand curve. As a result, the tire and the like of the running wheel 67 may wear unevenly.
Moreover, the aforementioned conventional configuration has a problem that when the bogie 62 is displaced in the vehicle lateral direction while running, the vehicle body is also displaced in the vehicle lateral direction along with the bogie 62, so that the vehicle gives a passenger an uncomfortable ride. In addition, there is also a problem that an impact from the running wheels 67 or the guide wheels 65 and 66 of the bogie 62 is directly transmitted to the vehicle body through a traction link or the like, so that the vehicle gives a passenger a more uncomfortable ride.
The present invention has been made in view of the aforementioned circumstances, and it is an object of the invention to provide a bogie for a guide rail type vehicle, which can make the steering angles of running wheels equal in both the cases of right-hand and left-hand curves, and also can suppress the displacement in the vehicle lateral direction during running, and the transmission of an impact from guide wheels to a vehicle body.
To achieve the above object of the related art, according to an embodiment of the present invention, a bogie for a guide rail type vehicle configured so as to be steered by being guided by a guide rail provided on a predetermined guideway when the bogie runs along the guideway, includes: a turn frame arranged below a vehicle body and connected to the vehicle body; an axle having a pair of running wheels and turnably mounted to the turn frame via a bearing; a guide frame mounted to the axle and formed so as to extend in a vehicle front and rear direction; a first pair of guide wheels arranged adjacent to each other in an axle direction so as to contact with the guide rail, and rotatably provided at a vehicle body end side portion in the vehicle front and rear direction of the guide frame; a second pair of guide wheels arranged adjacent to each other in the axle direction so as to contact the guide rail, and rotatably provided at a vehicle body center side portion in the vehicle front and rear direction of the guide frame; a stopper provided so as to project from an upper surface on a vehicle body side of the axle toward the vehicle body; and a pair of stopper receivers arranged facing each other at intervals from the stopper in a vehicle lateral direction, and provided so as to project from the vehicle body toward the axle.
Also, according to another embodiment of the present invention, the bogie for the guide rail type vehicle further includes a turn damper arranged so as to connect between the guide frame and the turn frame, to suppress a turning operation of the guide frame, and a restoration rod arranged so as to connect between the guide frame and the turn frame, to restore the guide frame to a straight-running state after the turning operation of the guide frame.
Also, according to another embodiment of the present invention, the guide frame is arranged at an offset position relative to a center axis of the axle toward a vehicle body end side in the vehicle front and rear direction such that a distance between the center axis of the axle and the first pair of guide wheels is greater than a distance between the center axis of the axle and the second pair of guide wheels.
Also, according to another embodiment of the present invention, the bogie further includes a first pair of guide wheel supports rotatably provided at the vehicle body end side portion of the guide frame so as to be arranged facing each other in the axle direction, each of the first pair of guide wheels being mounted to the vehicle body end side portion of the guide frame via each of the first pair of guide wheel supports, and the first pair of guide wheels being connected to each other by a shock-absorbing rod; and a second pair of guide wheel supports rotatably provided at the vehicle body center side portion of the guide frame so as to be arranged facing each other in the axle direction, each of the second pair of guide wheels being mounted to the vehicle body center side portion of the guide frame via each of the second pair of guide wheel supports, and the second pair of guide wheels being connected to each other by a shock-absorbing rod.
Also, according to another embodiment of the present invention, the bogie further includes a first guide wheel supporting member which connects the first pair of guide wheels to each other; a first pair of leaf springs provided at the vehicle body end side portion of the guide frame so as to be arranged facing each other in the axle direction, and the first guide wheel supporting member being mounted to the vehicle body end side portion of the guide frame via the first pair of leaf springs; a second guide wheel supporting member which connects the second pair of guide wheels to each other; and a second pair of leaf springs provided at the vehicle body center side portion of the guide frame so as to be arranged facing each other in the axle direction, and the second guide wheel supporting member being mounted to the vehicle body center side portion of the guide frame via the second pair of leaf springs.
Also, according to another embodiment of the present invention, the bogie further includes a first link which connects the first pair of guide wheels to each other, and is arranged tilting relative to the guide rail; a first link support which is provided at the vehicle body end side portion of the guide frame so as to extend toward the vehicle body end side in the vehicle front and rear direction, and the first link being rotatably mounted to the first link support via a first shock-absorbing mechanism having a restoration function; a second link which connects the second pair of guide wheels to each other, and is arranged tilting relative to the guide rail; and a second link support which is provided at the vehicle body center side portion of the guide frame so as to extend toward a vehicle body center side in the vehicle front and rear direction, and the second link being rotatably mounted to the second link support via a second shock-absorbing mechanism having a restoration function.
According to the bogie for the guide rail type vehicle in accordance with the present invention, in the bogie for the guide rail type vehicle configured so as to be steered by being guided by the guide rail provided on the predetermined guideway when the bogie runs along the guideway, the bogie includes: the turn frame arranged below the vehicle body and connected to the vehicle body; the axle having the pair of running wheels and turnably mounted to the turn frame via the bearing; the guide frame mounted to the axle and formed so as to extend in the vehicle front and rear direction; the first pair of guide wheels arranged adjacent to each other in an axle direction so as to contact with the guide rail, and rotatably provided at the vehicle body end side portion in the vehicle front and rear direction of the guide frame; the second pair of guide wheels arranged adjacent to each other in the axle direction so as to contact the guide rail, and rotatably provided at the vehicle body center side portion in the vehicle front and rear direction of the guide frame; the stopper provided so as to project from an upper surface on the vehicle body side of the axle toward the vehicle body; and the pair of stopper receivers arranged facing each other at intervals from the stopper in the vehicle lateral direction, and provided so as to project from the vehicle body toward the axle. Thus, when the bogie passes through a curved section of the guide rail, the guide frame is guided by the guide rail, so that the axle and the guide frame are turned together. Accordingly, in both the cases of a right-hand curve and a left-hand curve, the axle and the guide frame are turned in the same manner, and the steering angles of the running wheels become equal. A tire can be thereby prevented from wearing unevenly.
Also, even when the bogie is displaced in the vehicle lateral direction when passing through the curved section of the guide rail, the stopper provided on the axle abuts against the stopper receiver on the vehicle body side, and the displacement of the bogie in the vehicle lateral direction can be suppressed. Thus, the displacement of the vehicle body in the vehicle lateral direction is also suppressed, and as a result, the vehicle can give a passenger a more comfortable ride. In addition, since the pair of stopper receivers are arranged at intervals from the stopper in the vehicle lateral direction, an impact from the running wheels or the guide wheels of the bogie is prevented from being transmitted to the vehicle body. As a result, the vehicle can give a passenger a much more comfortable ride.
Also, in the bogie for the guide rail type vehicle according to the present invention, the bogie further includes the turn damper arranged so as to connect the guide frame and the turn frame, to suppress the turning operation of the guide frame, and the restoration rod arranged so as to connect the guide frame and the turn frame, to restore the guide frame to the straight-running state after the turning operation of the guide frame. Thus, when the bogie passes through the curved section of the guide rail, the rapid turning of the axle and the guide frame is suppressed by the turn damper. As a result, the bogie can be prevented from vibrating when passing through the curved section of the guide rail. In addition, the guide frame is immediately restored to a straight-running state by the restoration rod after the bogie passes through the curved section of the guide rail. Accordingly, the bogie can stably run along a portion in which the guide rail is changed from a curve line to a straight line.
Also, in the bogie for the guide rail type vehicle according to the present invention, the guide frame is arranged at an offset position relative to the center axis of the axle toward the vehicle body end side in the vehicle front and rear direction such that the distance between the center axis of the axle and the first pair of guide wheels is greater than the distance between the center axis of the axle and the second pair of guide wheels. Thus, for example, when the bogie on the front side of the vehicle passes through the curved section of the guide rail, the running wheel is turned by a predetermined angle (a slip angle) toward the inside of the curve relative to the tangential direction of the curve at the position of the running wheel. Accordingly, a cornering force is generated in the tire of the running wheel toward the inside of the curve. That is, when the bogie passes through the curved section of the guide rail, a cornering force is generated in the direction opposite to a centrifugal force acting on the bogie. The load acting on the first and second guide wheels is thereby reduced. As a result, the service life of the first and second guide wheels can be further extended.
In addition, for example, in the case of the bogie on the front side, the distance between the center axis of the axle and the first pair of guide wheels is greater than the distance between the center axis of the axle and the second pair of guide wheels. Thus, the load acting on the first guide wheels is reduced based on a lever ratio, and as a result, the service life of the first guide wheels can be further extended.
Also, for example, in the case of the bogie on the front side, the guide frame is arranged frontward from the center position of the axle. Thus, the guide frame is guided by the guide rail slightly before the axle, and a trailing effect is generated such that the axle easily follows the guide frame. Accordingly, the running stability of the bogie is further improved.
Also, in the bogie for the guide rail type vehicle according to the present invention, the bogie further includes the first pair of guide wheel supports rotatably provided at the vehicle body end side portion of the guide frame so as to be arranged facing each other in the axle direction, each of the first pair of guide wheels being mounted to the vehicle body end side portion of the guide frame via each of the first pair of guide wheel supports, and the first pair of guide wheels being connected to each other by the shock-absorbing rod; and the second pair of guide wheel supports rotatably provided at the vehicle body center side portion of the guide frame so as to be arranged facing each other in the axle direction, each of the second pair of guide wheels being mounted to the vehicle body center side portion of the guide frame via each of the second pair of guide wheel supports, and the second pair of guide wheels being connected to each other by the shock-absorbing rod. Thus, when the bogie runs along the curved section of the guide rail or a joint of the guide rail or the like, an impact on the first and second guide wheels is absorbed by the shock-absorbing rods, and is thus prevented from being transmitted to the guide frame and the bogie. Accordingly, the running stability of the bogie is improved, and the vehicle can give a passenger a more comfortable ride. An impact on the first and second guide wheels themselves is also reduced by the shock-absorbing rods, so that the operating life of the first and second guide wheels can be extended.
Also, in the bogie for the guide rail type vehicle according to the present invention, the bogie further includes the first guide wheel supporting member which connects the first pair of guide wheels to each other; the first pair of leaf springs provided at the vehicle body end side portion of the guide frame so as to be arranged facing each other in the axle direction, and the first guide wheel supporting member being mounted to the vehicle body end side portion of the guide frame via the first pair of leaf springs; the second guide wheel supporting member which connects the second pair of guide wheels to each other; and the second pair of leaf springs provided at the vehicle body center side portion of the guide frame so as to be arranged facing each other in the axle direction, and the second guide wheel supporting member being mounted to the vehicle body center side portion of the guide frame via the second pair of leaf springs. Thus, when the bogie runs along the curved section of the guide rail or the joint of the guide rail or the like, an impact on the first and second guide wheels is absorbed by the leaf springs, and is thus prevented from being transmitted to the guide frame and the bogie. Accordingly, the running stability of the bogie is improved, and the vehicle can give a passenger a more comfortable ride. An impact on the first and second guide wheels themselves is also reduced by the leaf springs, so that the operating life of the first and second guide wheels can be extended.
Moreover, since the leaf springs, which are not a wear component, are used to connect the guide wheel supporting member to the guide frame, the replacement cycle becomes longer, and the maintainability is also improved.
Also, in the bogie for the guide rail type vehicle bogie according to the present invention, the bogie further includes the first link which connects the first pair of guide wheels to each other, and is arranged tilting relative to the guide rail; the first link support which is provided at the vehicle body end side portion of the guide frame so as to extend toward the vehicle body end side in the vehicle front and rear direction, and the first link being rotatably mounted to the first link support via the first shock-absorbing mechanism having the restoration function; the second link which connects the second pair of guide wheels to each other, and is arranged tilting relative to the guide rail; and the second link support which is provided at the vehicle body center side portion of the guide frame so as to extend toward the vehicle body center side in the vehicle front and rear direction, and the second link being rotatably mounted to the second link support via the second shock-absorbing mechanism having the restoration function. Thus, when the bogie runs along the curved section of the guide rail or the joint of the guide rail or the like, an impact on the first and second guide wheels is absorbed by the rotating first and second links, and is thus prevented from being transmitted to the guide frame and the bogie. Accordingly, the running stability of the bogie is improved, and the vehicle can give a passenger a more comfortable ride. An impact on the first and second guide wheels themselves is also reduced by the rotating first and second links, so that the operating life of the first and second guide wheels can be extended.
In the following, a bogie for a guide rail type vehicle according to a first embodiment of the present invention will be described with reference to the drawings.
As shown in
As shown in
As shown in
As shown in
As shown in
Also, at a vehicle body center side portion 13b in the vehicle front and rear direction of the guide frame 13, a second pair of guide wheels 18 is provided so as to face each other with the guide rail 4 therebetween. Each of the second guide wheels 18 is laterally arranged so as to contact the outer side surface 4a of the guide rail 4. A center portion thereof is rotatably mounted to the guide frame 13 via a rotation shaft 19.
As shown in
As shown in
Also, the extension part 21b of the suspension frame 21 and a vehicle body center side portion 7a of the lower rectangular frame 7 of the turn frame 5 are connected to each other by two traction links 25. Here, an end part 25a on the vehicle body end side of the traction link 25 is rotatably mounted to the lower rectangular frame 7 via a joint 26, and an end part 25b on the vehicle body center side of the traction link 25 is rotatably mounted to the extension part 21b of the suspension frame 21 via a joint 27.
In the present embodiment, as shown in
Although not shown in the drawings, in the present embodiment, the bogie on the rear side of the vehicle 1 has the same features as those in the aforementioned embodiment.
The bogie for the guide rail type vehicle according to the present embodiment includes the turn frame 5 connected to the vehicle body 20, the axle 9 turnably mounted to the turn frame 5 via the bearings 11 and 12, the guide frame 13 mounted to the axle 9 and formed so as to extend in the vehicle front and rear direction, the first pair of guide wheels 16 rotatably provided at the vehicle body end side portion 13a in the vehicle front and rear direction of the guide frame 13, the second pair of guide wheels 18 rotatably provided at the vehicle body center side portion 13b in the vehicle front and rear direction of the guide frame 13, the stopper 28 provided so as to project from the upper surface 9b on the vehicle body side of the axle 9 toward the vehicle body 20, and the pair of stopper receivers 29 arranged facing each other at intervals from the stopper 28 in the vehicle lateral direction, and provided so as to project from the vehicle body 20 toward the axle 9. Thus, when the bogie 2 passes through a curved section of the guide rail 4, the guide frame 13 is guided by the guide rail 4, and the axle 9 and the guide frame 13 are turned together. Accordingly, the axle 9 and the guide frame 13 are turned in the same manner in both the cases of a right-hand curve and a left-hand curve, so that the steering angles of the running wheels 10 become equal. A tire can be thereby prevented from wearing unevenly.
Also, even when the bogie 2 is displaced in the vehicle lateral direction when passing through the curved section of the guide rail 4, the stopper 28 provided on the axle 9 abuts against the stopper receivers 29 on the vehicle body side, and the displacement of the bogie 2 in the vehicle lateral direction can be suppressed. Thus, the displacement of the vehicle body 20 in the vehicle lateral direction is also suppressed, and as a result, the vehicle 1 can give a passenger a more comfortable ride. In addition, since the pair of stopper receivers 29 is arranged at intervals from the stopper 28 in the vehicle lateral direction, an impact from the running wheels 10 or the guide wheels 16 and 18 of the bogie 2 is prevented from being transmitted to the vehicle body 20. As a result, the vehicle 1 can give a passenger a much more comfortable ride. That is, a large displacement in the vehicle lateral direction is suppressed, and other impacts such as vibrations are not transmitted to the vehicle body.
In the following, a bogie for a guide rail type vehicle according to a second embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in
Also, an end part 30a on the vehicle body end side of the left arm 30 relative to the vehicle running direction, and a vehicle body end side portion 14a of the longitudinal frame 14 of the guide frame 13 are connected to each other by a restoration rod 32 that extends in the vehicle lateral direction. The restoration rod 32 restores the guide frame 13 to a straight-running state after the turning operation of the guide frame 13 (after the vehicle 1 passes through the curved section of the guide rail 4).
Although not shown in the drawings, in the present embodiment, the bogie on the rear side of the vehicle 1 has the same features as those in the aforementioned embodiment.
As described above, the bogie for the guide rail type vehicle according to the present embodiment includes the turn damper 31 arranged so as to connect the guide frame 13 and the turn frame 5, to suppress the turning operation of the guide frame 13, and the restoration rod 32 arranged so as to connect the guide frame 13 and the turn frame 5, to restore the guide frame 13 to the straight-running state after the turning operation of the guide frame 13. Thus, when the bogie 2 passes through the curved section of the guide rail 4, the rapid turning of the axle 9 and the guide frame 13 is suppressed by the turn damper 31. As a result, the bogie 2 can be prevented from vibrating when passing through the curved section of the guide rail 4. In addition, the guide frame 13 is immediately restored to the straight-running state by the restoration rod 32 after the bogie 2 passes through the curved section of the guide rail 4. Accordingly, the bogie 2 can stably run along a portion in which the guide rail 4 is changed from a curve line to a straight line.
In the following, a bogie for a guide rail type vehicle according to a third embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in
As described above, in the bogie for the guide rail type vehicle according to the present embodiment, the guide frame 13 is arranged at an offset position relative to the center axis O1 of the axle 9 toward the vehicle body end side in the vehicle front and rear direction such that the distance L1 between the center axis O1 of the axle 9 and the first pair of guide wheels 16 is greater than the distance L2 between the center axis O1 of the axle 9 and the second pair of guide wheels 18. Thus, for example, when the bogie 2 on the front side of the vehicle 1 passes through the curved section of the guide rail 4, the running wheel 10 is turned by a predetermined angle (a slip angle) toward the inside of the curve relative to the tangential direction of the curve at the position of the running wheel 10. Accordingly, a cornering force is generated in the tire of the running wheel 10 toward the inside of the curve. That is, when the bogie 2 on the front side passes through the curved section of the guide rail 4, a cornering force is generated in the direction opposite to a centrifugal force acting on the bogie 2. The load acting on the first and second guide wheels 16 and 18 is thereby reduced. As a result, the service life of the first and second guide wheels 16 and 18 can be further extended.
In addition, for example, in the case of the bogie 2 on the front side, the distance L1 between the center axis O1 of the axle 9 and the first pair of guide wheels 16 is greater than the distance L2 between the center axis O1 of the axle 9 and the second pair of guide wheels 18. Thus, the load acting on the first guide wheels 16 is reduced based on a lever ratio, and as a result, the service life of the first guide wheels 16 can be further extended.
Also, for example, in the case of the bogie 2 on the front side, the guide frame 13 is arranged frontward from the center axis O1 of the axle 9. Thus, the guide frame 13 is guided by the guide rail 4 slightly before the axle 9, and a trailing effect is generated such that the axle 9 easily follows the guide frame 13. Accordingly, the running stability of the bogie 2 is further improved.
In the following, a bogie for a guide rail type vehicle according to a fourth embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in
In the present embodiment, as shown in
Also, in the present embodiment, as shown in
Also, in the present embodiment, as shown in
Although not shown in the drawings, in the present embodiment, the bogie on the rear side of the vehicle 1 has the same features as those in the aforementioned embodiment.
As described above, in the bogie for the guide rail type vehicle according to the present embodiment, the first pair of guide wheel supports 33 is rotatably provided at the vehicle body end side portion 13a of the guide frame 13 so as to be arranged facing each other in the axle direction. Each of the first pair of guide wheels 16 is mounted to the vehicle body end side portion 13a of the guide frame 13 via each of the first pair of guide wheel supports 33. The first pair of guide wheels 16 is connected to each other by the shock-absorbing rod 35. The second pair of guide wheel supports 36 is rotatably provided at the vehicle body center side portion 13b of the guide frame 13 so as to be arranged facing each other in the axle direction. Each of the second pair of guide wheels 18 is mounted to the vehicle body center side portion 13b of the guide frame 13 via each of the second pair of guide wheel supports 36. The second pair of guide wheels 18 is connected to each other by the shock-absorbing rod 38. Thus, when the bogie 2 runs along the curved section of the guide rail 4 or a joint of the guide rail 4 or the like, an impact on the first and second guide wheels 16 and 18 is absorbed by the shock-absorbing rods 35 and 38, and is thus prevented from being transmitted to the guide frame 13 and the bogie 2. Accordingly, the running stability of the bogie 2 is improved, and the vehicle 1 can give a passenger a more comfortable ride. An impact on the first and second guide wheels 16 and 18 themselves is also reduced by the shock-absorbing rods 35 and 38, so that the operating life of the first and second guide wheels 16 and 18 can be extended.
In the following, a bogie for a guide rail type vehicle according to a fifth embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in
The first split-type wheel receiver 40 includes a pair of guide wheel mounting parts 41 arranged at both end parts in the vehicle lateral direction, and a middle support part 42 arranged between the guide wheel mounting parts 41. The first guide wheel 16 is rotatably mounted to each of the guide wheel mounting parts 41 via the rotation shaft 17. Also, the vehicle body end side portion 39a of each of the first leaf springs 39 is held between each of the guide wheel mounting parts 41 and the middle support part 42.
Also, in the present embodiment, as shown in
The second split-type wheel receiver 44 includes a pair of guide wheel mounting parts 45 arranged at both end parts in the vehicle lateral direction, and a middle support part 46 arranged between the guide wheel mounting parts 45. The second guide wheel 18 is rotatably mounted to each of the guide wheel mounting parts 45 via the rotation shaft 19. Also, the vehicle body center side portion 43a of each of the second leaf springs 43 is held between each of the guide wheel mounting parts 45 and the middle support part 46.
Although not shown in the drawings, in the present embodiment, the bogie on the rear side of the vehicle 1 has the same features as those in the aforementioned embodiment.
As described above, in the bogie for the guide rail type vehicle according to the present embodiment, the first pair of guide wheels 16 is supported by the first split-type wheel receiver 40. The first pair of leaf springs 39 are provided at the vehicle body end side portion 13a of the guide frame 13 so as to be arranged facing each other in the axle direction. The first split-type wheel receiver 40 is mounted to the vehicle body end side portion 13a of the guide frame 13 via the first pair of leaf springs 39. The second pair of guide wheels 18 is supported by the second split-type wheel receiver 44. The second pair of leaf springs 43 is provided at the vehicle body center side portion 13b of the guide frame 13 so as to be arranged facing each other in the axle direction. The second split-type wheel receiver 44 is mounted to the vehicle body center side portion 13b of the guide frame 13 via the second pair of leaf springs 43. Thus, when the bogie 2 runs along the curved section of the guide rail 4 or the joint of the guide rail or the like, an impact on the first and second guide wheels 16 and 18 is absorbed by the first and second leaf springs 39 and 43, and is thus prevented from being transmitted to the guide frame 13 and the bogie 2. Accordingly, the running stability of the bogie 2 is improved, and the vehicle 1 can give a passenger a more comfortable ride. An impact on the first and second guide wheels 16 and 18 themselves is also reduced by the first and second leaf springs 39 and 43, so that the operating life of the first and second guide wheels 16 and 18 can be extended.
Moreover, the leaf springs, which are not a wear component, are used to connect the first and second split-type wheel receivers 40 and 44 and the guide frame 13. Thus, the replacement cycle becomes longer, and the maintainability is also improved.
In the following, a bogie for a guide rail type vehicle according to a sixth embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in
The first pair of guide wheels 16 is rotatably mounted to both end parts in the vehicle lateral direction of the first link 48 via the rotation shafts 17. Each of the first guide wheels 16 contacts with the outer side surface 4a (see
Also, the first link 48 is rotatably mounted to the first link support 47 via a first rubber vibration isolator (a shock-absorbing mechanism) 49 having a restoration function. The first link 48 is returned to an original tilting position by the restoration function of the first rubber vibration isolator 49 after rotation. The inner width between the first guide wheels 16 mounted to the both end parts of the first link 48 has a maximum value when the first link 48 is perpendicular to the guide rail 4, and is not structurally widened any more. That is, such a structure itself as to mount the first link 48 rotatably to the first link support 47 also works as a stopper to limit the inner width between the first guide wheels 16.
Also, in the present embodiment, as shown in
The second guide wheels 18 are rotatably mounted to both end parts in the vehicle lateral direction of the second link 51 via the rotation shafts 19. Each of the second guide wheels 18 contacts with the outer side surface 4a (see
Also, the second link 51 is rotatably mounted to the second link support 50 via a second rubber vibration isolator (a shock-absorbing mechanism) 52 having a restoration function. The second link 51 is returned to an original tilting position by the restoration function of the second rubber vibration isolator 52 after rotation. The inner width between the second guide wheels 18 mounted to the both end parts of the second link 51 has a maximum value when the second link 51 is perpendicular to the guide rail 4, and is not structurally widened any more. That is, such a structure itself so as to mount the second link 51 rotatably to the second link support 50 also works as a stopper to limit the inner width between the second guide wheels 18.
Although not shown in the drawings, in the present embodiment, the bogie on the rear side of the vehicle 1 has the same features as those in the aforementioned embodiment.
As described above, in the bogie for the guide rail type vehicle according to the present embodiment, the first pair of guide wheels 16 is connected to each other by the first link 48 arranged tilting relative to the guide rail 4. The first link support 47 is provided at the vehicle body end side portion 13a of the guide frame 13 so as to extend toward the vehicle body end side. The first link 48 is rotatably mounted to the first link support 47 via the first rubber vibration isolator 49 having the restoration function. The second pair of guide wheels 18 is connected to each other by the second link 51 arranged tilting relative to the guide rail 4. The second link support 50 is provided at the vehicle body center side portion 13b of the guide frame 13 so as to extend toward the vehicle body center side. The second link 51 is rotatably mounted to the second link support 50 via the second rubber vibration isolator 52 having the restoration function. Thus, when the bogie 2 runs along the curved section of the guide rail 4 or the joint of the guide rail 4, an impact on the first and second guide wheels 16 and 18 is absorbed by the rotating first and second links 48 and 51, and is thus prevented from being transmitted to the guide frame 13 and the bogie 2. Accordingly, the running stability of the bogie 2 is improved, and the vehicle 1 can give a passenger a more comfortable ride. An impact on the first and second guide wheels 16 and 18 themselves is also reduced by the rotating first and second links 48 and 51, so that the operating life of the first and second guide wheels 16 and 18 can be extended.
Also, even when an abnormal load is applied to the first and second guide wheels 16 and 18, the first and second links 48 and 51 can be more reliably restored to the original tilting position by using the first and second rubber vibration isolators 49 and 52.
Moreover, the inner widths between the first and second guide wheels 16 and 18 mounted to the both end parts of the first and second links 48 and 51 have a maximum value when the first and second links 48 and 51 are perpendicular to the guide rail 4, and are not structurally widened any more. That is, such a structure itself as to respectively mount the first and second links 48 and 51 rotatably to the first and second link supports 47 and 50 also works as a stopper to limit the inner widths between the first and second guide wheels 16 and 18.
The embodiments of the present invention have been described above. It should be noted that the present invention is not limited to the aforementioned embodiments, and various modifications and changes may be made therein based on the technical concepts of the present invention.
Although the guide rail 4 is formed in an H shape in section in the aforementioned first to sixth embodiments, a guide rail 53 may be formed in a U shape in section as shown in
In this case, as shown in
Although the stopper 28 and the stopper receivers 29 are formed in a rectangular parallelepiped shape in the aforementioned first to sixth embodiments, any other shape may be employed as long as the displacement of the bogie in the vehicle lateral direction is suppressed.
Although the stopper 28 is provided on the upper surface 9b of the axle 9 and the pair of stopper receivers 29 is provided on the suspension frame 21 in the aforementioned first to sixth embodiments, the present invention is not limited thereto. A pair of stopper receivers may be provided on the axle 9, and a stopper may be provided on the suspension frame 21.
Although the stopper is provided on the shock-absorbing rods 35 and 38 in the aforementioned fourth embodiment, the first and second guide wheel supports 33 and 36 may be prevented from rotating toward the inner side of the vehicle without using the stopper. For example, the configuration may be such that when the first and second guide wheel supports 33 and 36 rotate toward the inner side of the vehicle, the guide frame-side end parts of the first and second guide wheel supports 33 and 36 contact with the guide frame 13, whereby the first and second guide wheel supports 33 and 36 are prevented from rotating toward the inner side of the vehicle.
Although the first rubber vibration isolator 49 and the second rubber vibration isolator 52 are used as the shock-absorbing mechanism in the aforementioned sixth embodiment, the present invention is not limited thereto. As long as the first link 48 and the second link 51 are returned to the original tilting position after rotating, any other member having a torsion action, such as a torsion spring, may be used.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-064767 | Mar 2009 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2009/062319 | 7/6/2009 | WO | 00 | 10/12/2011 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2010/106697 | 9/23/2010 | WO | A |
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| Number | Date | Country | |
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| 20120017800 A1 | Jan 2012 | US |
