WO2010095284A1 - 低床式車両 - Google Patents
低床式車両 Download PDFInfo
- Publication number
- WO2010095284A1 WO2010095284A1 PCT/JP2009/060657 JP2009060657W WO2010095284A1 WO 2010095284 A1 WO2010095284 A1 WO 2010095284A1 JP 2009060657 W JP2009060657 W JP 2009060657W WO 2010095284 A1 WO2010095284 A1 WO 2010095284A1
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- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- carriage
- frame
- pair
- vehicle body
- Prior art date
Links
- 230000001629 suppression Effects 0.000 claims description 17
- 230000002238 attenuated effect Effects 0.000 claims description 6
- 230000000452 restraining effect Effects 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 description 13
- 239000005060 rubber Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
- B61F5/42—Adjustment controlled by buffer or coupling gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F3/00—Types of bogies
- B61F3/16—Types of bogies with a separate axle for each wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/22—Guiding of the vehicle underframes with respect to the bogies
- B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
- B61F5/44—Adjustment controlled by movements of vehicle body
Definitions
- the present invention relates to a low floor vehicle that travels on a track.
- low-floor vehicles have been adopted in streetcars, etc., in order to make them barrier-free, by making the floor inside the vehicle close to the road surface and lowering the step up and down of the passengers.
- Such a tram is provided with many curved tracks that bend at a radius of curvature of 20 m or less due to restrictions such as road traffic conditions.
- a low-floor type vehicle having a low center of gravity in its structure can travel relatively stably even on such a curved track.
- attack angle the angle of the traveling direction of the wheel with respect to the tangential direction of the curved track
- FIG. 7 shows an example of the configuration of the LRV, and the traveling direction of the LRV is indicated by an arrow A. Further, the traveling direction is described as the front of the vehicle.
- the LRV includes two leading vehicles 102 and one intermediate vehicle 103 that travel on a track 101, and one intermediate vehicle 103 is interposed between the two leading vehicles 102. It is an arranged vehicle organization.
- a pin connecting device 105 is disposed along an axis extending in the vehicle vertical direction.
- the leading vehicle 102 is connected to the intermediate vehicle 103 so as to be able to turn around a pin connector 105. Therefore, the leading vehicle 102 and the intermediate vehicle 103 can turn around the pin connector 105 corresponding to the curvature radius R of the curved track 101.
- the connecting portion 104 is provided with a damper, a spring and the like (not shown) in order to prevent the leading vehicle 102 from turning and to ensure stability when the vehicle is traveling at high speed.
- a cart 107 is disposed below the vehicle body 106 of the leading vehicle 102.
- a pair of wheels 108 are provided on the front side and the rear side of the carriage 107, respectively.
- the pair of wheels 108 are configured to be independently rotatable around the same axis 108 a extending in the vehicle width direction, and are connected by a shaft support member 109.
- the shaft support member 109 is disposed on the vehicle front side and the vehicle rear side of the bogie frame 110 configured as a frame body of the bogie 107, and wheels 108 are disposed between the shaft support member 109 and the bogie frame 110.
- a conical rubber 111 is provided as an axial spring.
- the conical rubber 111 suppresses vibrations transmitted from the wheel 108 to the carriage frame 110. Further, the shaft support member 109 extends at a position close to the road surface between the pair of wheels 108, and a floor surface (not shown) in the vehicle is disposed on the shaft support member 109. For this reason, the floor surface in the vehicle is close to the road surface.
- the attack angle ⁇ which is the angle of the traveling direction (indicated by arrow C) of the wheel 108 with respect to the tangential direction (indicated by arrow B) of the curved track
- the wheel flange 108b may come into contact with the track.
- pressure is applied to the vehicle from the wheel flange 108b, the lateral pressure of the vehicle increases, and vibration and creaking noise are generated in the vehicle.
- the ride comfort of the occupant is impaired, and consequently the wheel flange 108b. Has the problem of wear.
- the carriage 107 is configured to be movable in the vehicle width direction with respect to the vehicle body 106.
- a traction rod 112 that transmits the traction force of the carriage 107 to the vehicle body 106 is disposed along the vehicle front-rear direction, and the end of the traction rod 112 on the vehicle rear side is arranged.
- the portion 112a is attached to the carriage 107 via a spherical bush or vibration isolating rubber (not shown), and the end 112b of the tow rod 112 on the vehicle front side is provided with a spherical bush or vibration isolating rubber (not shown). Via the vehicle body 106 side.
- the leading vehicle 102 and the intermediate vehicle 103 bend around the pin connector 105 corresponding to the curvature radius R of the curved track 101 when traveling on the curved track of the vehicle.
- the leading vehicle 102 may not bend sufficiently with respect to the intermediate vehicle 103 due to the influence of the damper of the connecting portion 104.
- the wheel 108 may not bend along the curved track due to the influence of cant or slack of the curved track.
- the traveling direction of the wheel 108 (indicated by the arrow B) does not face the tangential direction (indicated by the arrow C) of the curved track 101, and the attack angle ⁇ may increase.
- the present invention has been made in view of such circumstances, and its purpose is to reduce the lateral pressure of the vehicle when the vehicle enters a curved track, to prevent the generation of vehicle vibration and creaking noise, and to board the vehicle. It is an object of the present invention to provide a low-floor type vehicle that can improve the ride quality of a person and reduce the wear of wheel flanges.
- a low-floor type vehicle includes a carriage provided at a lower portion of a vehicle body, a carriage frame configured as a frame body of the carriage, and a vehicle width direction between the carriage frame and a vehicle longitudinal direction. And a pair of bogie frame horizontal beams arranged at intervals in the vehicle front-rear direction, and a pair of bogie frame cross beams of the bogie frame, respectively provided on the vehicle front side and the vehicle rear side, and A low-floor type vehicle having a pair of wheels traveling on a track, the pair of flexible traction rods arranged along the vehicle front-rear direction and configured to be extendable in the vehicle front-rear direction is the bogie.
- the pair of flexible traction rods are spaced apart from each other in the vehicle width direction, one end of the flexible traction rod is attached to the carriage frame lateral beam, and the other end of the flexible traction rod On the body Attached to vignetting the receiving portion, the carriage is configured to be pivoted relative to the vehicle body.
- a low floor type vehicle includes a carriage provided at a lower part of a vehicle body, a carriage frame configured as a frame body of the carriage, and a middle of the carriage frame in the vehicle front-rear direction.
- a pair of bogie frame horizontal beams arranged along the width direction and spaced from each other in the vehicle front-rear direction, and provided on the vehicle front side and the vehicle rear side from the pair of bogie frame cross beams of the bogie frame, respectively.
- One end of the rod is attached to the bogie frame cross beam, and the other end of the tow rod is attached to a receiving portion provided on the vehicle body, and is arranged along the vehicle longitudinal direction and is extendable in the vehicle longitudinal direction.
- Configured restore Is provided on at least one of the left and right outer sides of the tow rod in the vehicle width direction, one end of the restoring rod is attached to the carriage frame lateral beam, and the other end of the restoring rod is provided on the vehicle body.
- the cart is configured to be turnable with respect to the vehicle body.
- the turning suppression damper arranged along the vehicle width direction and configured to be capable of being attenuated in the vehicle width direction includes the front side portion of the carriage frame lateral beam on the vehicle front side and the vehicle rear side. And one end portion of the turning restraining damper is attached to the bogie frame transverse beam, and the other end portion of the turning restraining damper is attached to a receiving portion provided in the vehicle body.
- a stopper provided on the vehicle body and a stopper member provided on the carriage are arranged so as to be able to contact each other so as to restrict the turning of the vehicle body.
- a low-floor type vehicle according to the present invention is disposed along a vehicle width direction between a carriage provided at a lower portion of a vehicle body, a carriage frame configured as a frame body of the carriage, and a vehicle longitudinal direction of the carriage frame. And a pair of bogie frame horizontal beams arranged at a distance from each other in the vehicle front-rear direction, and a pair of vehicles disposed on the vehicle front side and vehicle rear side from the pair of bogie frame side beams of the bogie frame and traveling on the track.
- a pair of flexible traction rods arranged along the vehicle front-rear direction and configured to be extendable in the vehicle front-rear direction are provided on the carriage.
- the flexible traction rods are spaced apart from each other in the vehicle width direction, one end of the flexible traction rod is attached to the carriage frame lateral beam, and the other end of the flexible traction rod is provided on the vehicle body.
- Mounting on the receiving part Are the carriage is configured to be pivoted relative to the vehicle body. Therefore, when the vehicle enters a curved track, when the outer side wheel of the pair of wheels comes into contact with the track, a force toward the inner side in the vehicle width direction is applied to the outer side wheel, A force to turn the vehicle body acts on the carriage. At this time, one of the pair of flexible traction rods is extended, and the other of the pair of flexible traction rods is contracted, so that the cart can turn with respect to the vehicle body.
- the force traveling in the straight direction due to the inertia of the vehicle body is absorbed and hardly affects the carriage, and the carriage is easily bent along a curved track.
- the wheel is more along the curved track and can enter the curved track with a small attack angle. Accordingly, when the vehicle enters the curved track, the contact pressure between the wheel on the outer track side and the track is relieved, the lateral pressure applied to the vehicle is reduced, and the occurrence of vibrations and creaking sounds are prevented. It will be. Therefore, the ride comfort of the passenger is improved, and consequently wear of the wheel flange is reduced. That is, the vehicle can smoothly pass the curved track.
- a low-floor type vehicle is disposed along a vehicle width direction between a carriage provided at a lower portion of a vehicle body, a carriage frame configured as a frame body of the carriage, and a vehicle longitudinal direction of the carriage frame. And a pair of bogie frame horizontal beams arranged at a distance from each other in the vehicle front-rear direction, and a pair of vehicles disposed on the vehicle front side and vehicle rear side from the pair of bogie frame side beams of the bogie frame and traveling on the track.
- the trolley is provided with one traction rod disposed along the vehicle front-rear direction at the center in the vehicle width direction, and one end of the traction rod is disposed on the trolley frame.
- the vehicle body is configured to be turnable. Therefore, when the vehicle enters a curved track, when the outer side wheel of the pair of wheels comes into contact with the track, a force toward the inner side in the vehicle width direction is applied to the outer side wheel, A force to turn the vehicle body acts on the carriage.
- one of the pair of restoring rods extends and the other of the pair of restoring rods contracts, so that the cart can turn with respect to the vehicle body with reference to the traction rod.
- the force traveling in the straight direction due to the inertia of the vehicle body is absorbed and hardly affects the carriage, and the carriage is easily bent along a curved track.
- the wheel is more along the curved track and can enter the curved track with a small attack angle. Accordingly, when the vehicle enters the curved track, the contact pressure between the wheel on the outer track side and the track is relieved, the lateral pressure applied to the vehicle is reduced, and the occurrence of vibrations and creaking sounds are prevented. It will be. Therefore, the ride comfort of the passenger is improved, and consequently wear of the wheel flange is reduced. That is, the vehicle can smoothly pass the curved track.
- the turning suppression damper arranged along the vehicle width direction and configured to be capable of being attenuated in the vehicle width direction includes the front side portion of the carriage frame lateral beam on the vehicle front side and the vehicle rear side. And one end portion of the turning restraining damper is attached to the bogie frame transverse beam, and the other end portion of the turning restraining damper is attached to a receiving portion provided in the vehicle body.
- the stopper provided on the vehicle body and the stopper member provided on the carriage are arranged so as to be able to come into contact so as to restrict the turning of the vehicle body.
- a low floor type vehicle (hereinafter referred to as “vehicle”) according to a first embodiment of the present invention will be described below.
- vehicle a low floor type vehicle
- FIG. 1 an example of a vehicle will be described using an LRV as shown in FIG. 1, and the traveling direction of the vehicle will be described as the front of the vehicle.
- FIG. 1 the vehicle is viewed from above, and the traveling direction of the vehicle is indicated by an arrow A.
- the vehicle shown in FIG. 1 includes two leading vehicles 2 and one intermediate vehicle 3 that travel on the track 1, and one intermediate vehicle 3 is arranged between the two leading vehicles 2. It is organized.
- a connecting portion 4 is provided between the leading vehicle 2 and the intermediate vehicle 3, and a pin connecting device 5 is provided along the axis extending in the vehicle vertical direction at the connecting portion 4. It is connected to the vehicle 3 so as to be able to turn around the pin connector 5.
- a carriage 7 is provided below the vehicle body 6 of the leading vehicle 2, and wheels 8 provided on the carriage 7 are configured to travel on the track 1.
- the traveling direction of the vehicle is indicated by an arrow A.
- the carriage 7 is provided with a carriage frame 9 as its frame, and the vehicle body 6 (shown in FIG. 1) is supported by the carriage frame 9.
- two bogie frame lateral beams 9 a extending in the vehicle width direction are arranged with an interval in the vehicle front-rear direction.
- two bogie frame vertical beams 9b extending in the vehicle front-rear direction are disposed on the bogie frame 9 so as to intersect with the two bogie frame horizontal beams 9a, respectively, and at intervals in the vehicle width direction.
- a shaft support member 10 is provided at each of the front end portion and the rear end portion of the bogie frame vertical beam 9b. Therefore, the bogie frame horizontal beam 9a is positioned closer to the center in the vehicle front-rear direction than the shaft support member 10.
- a pair of wheels 8 are attached to both ends of the shaft support member 10 in the vehicle width direction so as to be independently rotatable about the same axis line 8a. Is provided with a wheel flange 8b. Further, the shaft support member 10 is configured to extend close to the road surface between both ends to which the wheels 8 are attached.
- a conical rubber 11 is disposed as a shaft spring of the wheel 8 between the bogie frame vertical beam 9b and the end of the shaft support member 10, and the end of the shaft support member 10 is interposed via the cone rubber 11. Are attached to the bogie frame vertical beam 9b. The conical rubber 11 is configured to absorb vibration applied from the wheel 8 from the vehicle vertical direction.
- a turning suppression damper 12 is provided on the vehicle front side and the vehicle rear side of the carriage 7.
- the turning suppression damper 12 is disposed along the axis 12a extending in the vehicle width direction and inclined in the vehicle vertical direction. Further, the turning suppression damper 12 is configured to be able to attenuate the force applied from the vehicle width direction.
- the axis 12a of the turning suppression damper 12 is separated from the intermediate point 13 of the carriage frame 9 by a distance E in the vehicle longitudinal direction.
- the intermediate point 13 of the bogie frame 9 includes an axis 8c passing through the center in the vehicle width direction of the pair of wheels 8 in the straight track running state and extending in the vehicle front-rear direction, the vehicle front side and the vehicle in the straight track running state. It is located at the intersection with an axis 8d that passes through the center between the rear wheels 8 and extends in the vehicle width direction.
- One end portion of the turning suppression damper 12 on the vehicle front side is attached to the front side portion of the bogie frame lateral beam 9a on the vehicle front side via a spherical flange, and the other end portion of the turning suppression damper 12 on the vehicle front side is 6 is attached to a receiving portion 6a provided in 6 via a spherical flange.
- one end portion of the turning suppression damper 12 on the vehicle rear side is attached to the rear side portion of the bogie frame horizontal beam 9a on the vehicle rear side via a spherical flange, and the other end portion of the turning suppression damper 12 on the vehicle rear side. Is attached to a receiving portion 6a provided on the vehicle body 6 via a spherical flange.
- stopper members 14 are provided on the vehicle front side and the vehicle rear side of the carriage 7.
- the stopper member 14 is disposed along the axis 12a of the turning suppression damper 12, and is attached to the carriage frame lateral beam 9a. Stopper rubbers 14a are respectively provided on both side portions of the stopper member 14 in the vehicle width direction.
- the vehicle body 6 is provided with a stopper receiving portion 6 b along the axis of the turning suppression damper 12.
- the stopper member 14 is disposed between the receiving portion 6a and the stopper receiving portion 6b of the vehicle body 6, and the stopper member 14 is separated from the receiving portion 6a and the stopper receiving portion 6b of the vehicle body 6 by a distance F in the vehicle width direction. Has been placed. Therefore, the turning of the vehicle body 6 is restricted by the contact between the stopper member 14 on the cart 7 side and the receiving portion 6a or the stopper receiving portion 6b on the vehicle body 6 side.
- the carriage 7 is provided with a pair of flexible traction rods 15.
- the flexible traction rod 15 is arranged along an axis 15a extending in the vehicle front-rear direction, and is configured to be extendable in the vehicle front-rear direction.
- the axis 15a of the flexible traction rod 15 is separated from the intermediate point 13 of the carriage frame 9 by a distance D in the vehicle width direction. Therefore, the pair of flexible traction rods 15 are arranged at intervals in the vehicle width direction so as to be symmetric in the vehicle width direction.
- An end portion 15b on the vehicle front side of the flexible traction rod 15 is attached to a receiving portion 6c provided on the vehicle body 6 (shown in FIG. 1) via a spherical flange.
- An end portion 15c on the vehicle rear side of the flexible pulling rod 15 is attached to a bogie frame lateral beam 9a on the vehicle rear side via a spherical flange.
- the flexible traction rod 15 is in a free support state.
- the flexible traction rod 15 is provided with a piston rod 16 extending along the longitudinal direction and a cylindrical cylinder 17 extending along the longitudinal direction.
- a head portion 16 a is provided at the distal end portion of the piston rod 16, and a cap portion 16 b is provided at the proximal end portion of the piston rod 16.
- the cap portion 16b is provided with a stopper portion 16c, and a rod portion 16d is provided between the head portion 16a and the cap portion 16b.
- Both ends 17a and 17b in the longitudinal direction of the cylinder 17 are formed so as to be closed, and the piston rod 16 is passed through the cylinder 17 at both ends, and the cap portion 16b and the rod portion 16d of the piston rod 16 are connected to the cylinder 17.
- a through hole is bored so as to be movable in the longitudinal direction.
- the head portion 16a of the piston rod 16 and the end portion 17a of the cylinder 17 located on the head portion 16a side are in contact with each other, and the piston rod 16 is restricted from moving in the longitudinal direction toward the cap portion 16b side.
- the stopper portion 16c of the piston rod 16 and the end portion 17b of the cylinder 17 located on the cap portion 16b side are arranged at a distance G from each other in the longitudinal direction. It can move up to a distance G in the longitudinal direction toward the portion 16a.
- a coil spring 18 is disposed in the cylinder 17 along the longitudinal direction
- a guide washer 19 is disposed between the coil spring 18 and the end portion 17b of the cylinder 17 located on the cap 16b side.
- the guide washer 19 is in contact with the cap portion 16b of the piston rod 16, and when the cap portion 16b moves in the longitudinal direction toward the head portion 16a, the guide washer 19 moves together and the coil spring 18 is compressed. Will be.
- a rubber member 20 may be provided instead of the coil spring 18 as shown in FIG.
- the cap portion 16b of the piston rod 16 is arranged in a state of moving to the head portion 16a side. 15 Neutral state. Further, since the coil spring 18 is in a compressed state, the flexible pulling rod 15 is in a state where a pressure P is applied.
- the pressure P may be determined based on the load applied to the flexible traction rod 15 and the margin when the maximum acceleration is applied to the full vehicle.
- the carriage 7 can be prevented from turning with respect to the vehicle body 6 due to the influence of the vehicle weight or the like other than during the curved track traveling. That is, it is possible to ensure the running stability of the vehicle running on the straight track.
- the structure of the flexible traction rod 15 shown in FIGS. 4A and 4B is merely an example, and other structures may be used as long as the structure can be expanded and contracted.
- FIG. 5 the vehicle is viewed from above, and the traveling direction of the vehicle is indicated by an arrow A.
- the wheel 8 on the outer gauge side of the pair of wheels 8 contacts the track 1, and the force toward the inner side in the vehicle width direction is exerted on the wheel 8 on the outer track side.
- a force to turn the vehicle body 6 acts on the cart 7.
- one of the pair of flexible traction rods 15 extends and the other of the pair of flexible traction rods 15 contracts. Therefore, the carriage 7 turns about the intermediate point 13 of the carriage frame 9 with respect to the vehicle body 6 by the maximum angle ⁇ .
- Such an operation is also performed in the leading vehicle 2 on the vehicle rear side.
- the turning of the carriage 7 absorbs the force in the straight traveling direction due to the inertia of the vehicle body 6 so that the carriage 7 does not easily affect the carriage 7. It becomes easy to bend along. As a result, the wheel 8 becomes more along the curved track, and can enter the curved track with a small attack angle. Therefore, when the vehicle enters the curved track, the contact pressure between the outer wheel 8 and the track 1 is relieved, the lateral pressure applied to the vehicle is reduced, and the occurrence of vibration and creaking noise is prevented. It will be. Therefore, the ride comfort of the passenger is improved, and consequently wear of the wheel flange 8b is reduced. That is, the vehicle can smoothly pass the curved track.
- the cart 7 can be prevented from turning with respect to the vehicle body 6 by a force other than the force acting on the cart 7 from the track 1. For this reason, the carriage 7 turns with respect to the vehicle body 6 only when the vehicle enters a curved track, while the carriage 7 does not turn with respect to the vehicle body 6 when the vehicle travels on a straight track, etc. Will be secured. Moreover, since the amount of movement of the carriage 7 in the vehicle width direction is limited by the stopper member 14, a large turn of the carriage 7 is prevented, and the running stability of the vehicle is further ensured.
- a vehicle according to a second embodiment of the present invention will be described below.
- an LRV will be described as an example of the vehicle.
- the basic configuration of the vehicle according to the second embodiment is the same as the configuration of the vehicle according to the first embodiment. Elements similar to those in the first embodiment will be described using the same symbols and names as those in the first embodiment.
- a configuration different from the first embodiment will be described.
- the traveling direction of the vehicle is described as the front of the vehicle.
- the structure of the carriage 7 in the second embodiment will be described with reference to the carriage 7 in a straight running state shown in FIG.
- the trolley 7 is provided with one traction rod 21.
- the tow rod 21 is disposed along an axis 8c that passes through the center between the wheels 8 on the vehicle front side and the vehicle rear side in the straight track running state and extends in the vehicle width direction.
- An end 21a on the vehicle rear side of the tow rod 21 is attached to a receiving portion 6d provided on the vehicle body 6 (shown in FIG. 1) via a spherical flange.
- An end portion 21b on the vehicle front side of the tow rod 21 is attached to a bogie frame cross beam 9a on the vehicle rear side via a spherical flange.
- the carriage 7 is provided with a pair of restoring rods 22 configured similarly to the flexible traction rod 15 of the first embodiment.
- the restoring rods 22 are disposed on the left and right sides of the traction rod 21 in the vehicle width direction.
- the restoring rod 22 may be provided only on one of the left and right sides of the traction rod 21 in the vehicle width direction.
- An end 22a on the vehicle rear side of the restoring rod 22 is attached to a receiving portion 6e provided on the vehicle body 6 (shown in FIG. 1) via a spherical flange.
- An end portion 22b on the vehicle front side of the restoring rod 22 is attached to a bogie frame cross beam 9a on the vehicle rear side via a spherical flange.
- the turning of the carriage 7 absorbs the force in the straight traveling direction due to the inertia of the vehicle body 6 and hardly affects the carriage 7.
- the cart is easy to bend along the curved track.
- the wheel 8 becomes more along the curved track, and can enter the curved track with a small attack angle. Therefore, when the vehicle enters the curved track, the contact pressure between the outer wheel 8 and the track 1 is relieved, the lateral pressure applied to the vehicle is reduced, and the occurrence of vibration and creaking noise is prevented. It will be. Therefore, the ride comfort of the passenger is improved, and consequently wear of the wheel flange 8b is reduced.
- the cart 7 can be prevented from turning with respect to the vehicle body 6 by a force other than the force acting on the cart 7 from the track 1. For this reason, the carriage 7 turns with respect to the vehicle body 6 only when the vehicle enters a curved track, while the carriage 7 does not turn with respect to the vehicle body 6 when the vehicle travels on a straight track, etc. Will be secured. Moreover, since the amount of movement of the carriage 7 in the vehicle width direction is limited by the stopper member 14, a large turn of the carriage 7 is prevented, and the running stability of the vehicle is further ensured.
- a vehicle 7 has a structure in which a carriage 7 is provided in the leading vehicle 2 and one intermediate vehicle 3 is provided between the two leading vehicles 2.
- the number of head vehicles 2 and intermediate vehicles 3 may be different as long as they are arranged. The same effects as those described in the above embodiment can be obtained.
- a vibration isolating rubber may be provided instead of the guide washer 19 of the flexible pulling rod 15 or the restoring rod 22. Further, the swing of the carriage 7 can be absorbed, and the occurrence of the swing of the shaft support member 10 and the wheels 8 accompanying the swing can be effectively prevented.
Abstract
Description
そのため、車両が曲線軌道に進入するときに、前記一対の車輪のうち外軌側の車輪が前記軌道と接触して、外軌側の前記車輪に車幅方向内側に向かう力が加えられると、前記台車には前記車体に対して旋回しようとする力が作用することとなる。このとき、前記一対の撓み式牽引ロッドのうち一方が伸びるとともに、前記一対の撓み式牽引ロッドのうち他方が縮むことによって、前記台車が前記車体に対して旋回可能となっている。このような前記台車の旋回によって、前記車体の慣性により直進方向に向かう力が、吸収されて前記台車に影響し難くなり、前記台車は曲線軌道に沿って曲がり易くなる。その結果、前記車輪は、より曲線軌道に沿った状態となって、小さなアタック角で曲線軌道に進入できる。従って、車両が曲線軌道に進入するときに、外軌側の前記車輪と前記軌道との接触圧力が緩和され、車両に加わる横圧が低減され、車両の振動およびキシリ音の発生が防止されることとなる。よって、搭乗者の乗り心地が改善され、ひいては車輪フランジの摩耗が低減されることとなる。すなわち、車両は曲線軌道をスムーズに通過できる。
そのため、車両が曲線軌道に進入するときに、前記一対の車輪のうち外軌側の車輪が前記軌道と接触して、外軌側の前記車輪に車幅方向内側に向かう力が加えられると、前記台車には前記車体に対して旋回しようとする力が作用することとなる。このとき、前記一対の復元ロッドのうち一方が伸びるとともに、前記一対の復元ロッドのうち他方が縮むことによって、前記台車が前記車体に対して前記牽引ロッドを基準として旋回可能となる。このような前記台車の旋回によって、前記車体の慣性により直進方向に向かう力が、吸収されて前記台車に影響し難くなり、前記台車は曲線軌道に沿って曲がり易くなる。その結果、前記車輪は、より曲線軌道に沿った状態となって、小さなアタック角で曲線軌道に進入できる。従って、車両が曲線軌道に進入するときに、外軌側の前記車輪と前記軌道との接触圧力が緩和され、車両に加わる横圧が低減され、車両の振動およびキシリ音の発生が防止されることとなる。よって、搭乗者の乗り心地が改善され、ひいては車輪フランジの摩耗が低減されることとなる。すなわち、車両は曲線軌道をスムーズに通過できる。
本発明の第1実施形態の低床式車両(以下、「車両」という)について以下に説明する。第1実施形態では、車両の一例として、図1で示すようなLRVを用いて説明するものとし、また、車両の進行方向を車両前方として説明する。図1は、車両を上方から見たものとし、車両の進行方向を矢印Aで示す。図1に示す車両では、軌道1上を走行する2台の先頭車両2および1台の中間車両3を備えており、2台の先頭車両2の間に1台の中間車両3を配置した車両編成となっている。先頭車両2と中間車両3との間には連接部4が設けられ、この連結部4には車両上下方向に延びる軸線に沿ってピン連接器5が設けられており、先頭車両2は、中間車両3に対してピン連接器5を中心に旋回可能に連結されている。先頭車両2の車体6の下部には台車7が設けられており、台車7に設けられた車輪8が軌道1上を走行するように構成されている。
車両前方側の先頭車両2が曲線軌道に進入するとき、一対の車輪8のうち外軌側の車輪8が軌道1と接触して、外軌側の車輪8に車幅方向内側に向かう力が加えられると、台車7には車体6に対して旋回しようとする力が作用することとなる。このとき、一対の撓み式牽引ロッド15のうち一方が伸びるとともに、一対の撓み式牽引ロッド15のうち他方が縮むこととなる。そのため、台車7は、車体6に対して台車枠9の中間点13を中心に最大で角度θだけ旋回することとなる。このような動作は、車両後方側の先頭車両2においても行なわれることとなる。
本発明の第2実施形態の車両について以下に説明する。第2実施形態でもまた、車両の一例としてLRVを用いて説明する。第2実施形態の車両の基本的な構成は、第1実施形態の車両の構成と同様になっている。第1実施形態と同様な要素は、第1実施形態と同様の符号および名称を用いて説明する。ここでは、第1実施形態と異なる構成について説明する。なお、第2実施形態では、車両の進行方向を車両前方として説明する。
車両前方側の先頭車両2が曲線軌道に進入するとき、一対の車輪8のうち外軌側の車輪8が軌道1と接触して、外軌側の車輪8に車幅方向内側に向かう力が加えられると、台車7には車体6に対して旋回しようとする力が作用することとなる。このとき、牽引ロッド21を支持基準としながら、一対の復元ロッド22のうち一方が伸びるとともに、一対の復元ロッド22のうち他方が縮むこととなる。そのため、台車7は、車体6に対して台車枠9の中間点13を中心に最大で角度θだけ旋回することとなる。このような動作は、車両後方側の先頭車両2においても行なわれることとなる。
2 先頭車両
3 中間車両
4 連接部
5 ピン連接器
6 車体
6a,6c,6d,6e 受部
6b ストッパ受部
7 台車
8 車輪
8a,8c,8d 軸線
8b 車輪フランジ
9 台車枠
9a 台車枠横梁
9b 台車枠縦梁
10 軸支部材
11 円錐ゴム
12 旋回抑制ダンパ
12a 軸線
12b,12c 端部
13 中間点
14 ストッパ部材
14a ストッパゴム
15 撓み式牽引ロッド
15a 軸線
15b,15c 端部
16 ピストンロッド
16a ヘッド部
16b キャップ部
16c ストッパ部
16d ロッド部
17 シリンダ
17a,17b 端部
18 コイルバネ
19 ガイド座金
20 ゴム部材
21 牽引ロッド
21a,21b 端部
22 復元ロッド
22a,22b 端部
A,B,C 矢印
D,E,F,G 距離
O 中心
α,β,θ 角度
Claims (3)
- 車体の下部に設けられる台車と、
前記台車の枠体として構成される台車枠と、
前記台車枠の車両前後方向の中間で車幅方向に沿って配置されるとともに、互いに車両前後方向に間隔を空けて配置される一対の台車枠横梁と、
前記台車枠の一対の台車枠横梁より車両前方側および車両後方側にそれぞれ設けられ、かつ軌道上を走行する一対の車輪とを備えている低床式車両であって、
車両前後方向に沿って配置されるとともに車両前後方向に伸縮可能に構成される一対の撓み式牽引ロッドが前記台車に設けられ、前記一対の撓み式牽引ロッドが互いに車幅方向に間隔を空けて配置され、前記撓み式牽引ロッドの一端部が前記台車枠横梁に取付けられ、前記撓み式牽引ロッドの他端部が前記車体に設けられた受部に取付けられており、
前記台車が前記車体に対して旋回可能に構成されている、低床式車両。 - 車体の下部に設けられる台車と、
前記台車の枠体として構成される台車枠と、
前記台車枠の車両前後方向の中間で車幅方向に沿って配置されるとともに、互いに車両前後方向に間隔を空けて配置される一対の台車枠横梁と、
前記台車枠の一対の台車枠横梁より車両前方側および車両後方側にそれぞれ設けられ、かつ軌道上を走行する一対の車輪とを備えている低床式車両であって、
車幅方向中央で車両前後方向に沿って配置される1つの牽引ロッドが前記台車に設けられ、前記牽引ロッドの一端部が前記台車枠横梁に取付けられ、前記牽引ロッドの他端部が前記車体に設けられた受部に取付けられ、
車両前後方向に沿って配置されるとともに車両前後方向に伸縮可能に構成される復元ロッドが、前記牽引ロッドの車幅方向左右外側の少なくとも一方に設けられ、前記復元ロッドの一端部が前記台車枠横梁に取付けられ、前記復元ロッドの他端部が前記車体に設けられた受部に取付けられており、
前記台車が前記車体に対して旋回可能に構成されている、低床式車両。 - 車幅方向に沿って配置されるとともに車幅方向に減衰可能に構成される旋回抑制ダンパが、前記車両前方側の台車枠横梁の前側部と前記車両後方側の台車枠横梁の後側部とにそれぞれ設けられ、前記旋回抑制ダンパの一端部が前記台車枠横梁に取付けられ、前記旋回抑制ダンパの他端部が前記車体に設けられた受部に取付けられており、
前記車体に設けられる受部および前記台車に設けられるストッパ部材が、前記車体の旋回を規制するように当接可能に配置されている、請求項1または2に記載の低床式車両。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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SG2011043338A SG172138A1 (en) | 2009-02-20 | 2009-06-11 | Low floor vehicle |
US13/133,747 US8322289B2 (en) | 2009-02-20 | 2009-06-11 | Low floor vehicle |
KR1020117014940A KR101297854B1 (ko) | 2009-02-20 | 2009-06-11 | 저플로어식 차량 |
CN200980152301.3A CN102264590B (zh) | 2009-02-20 | 2009-06-11 | 低地板车辆 |
HK11113909.0A HK1159571A1 (en) | 2009-02-20 | 2011-12-23 | Low floor vehicle |
Applications Claiming Priority (2)
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JP2009-037992 | 2009-02-20 | ||
JP2009037992A JP5010630B2 (ja) | 2009-02-20 | 2009-02-20 | 低床式車両 |
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WO2010095284A1 true WO2010095284A1 (ja) | 2010-08-26 |
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PCT/JP2009/060657 WO2010095284A1 (ja) | 2009-02-20 | 2009-06-11 | 低床式車両 |
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US (1) | US8322289B2 (ja) |
JP (1) | JP5010630B2 (ja) |
KR (1) | KR101297854B1 (ja) |
CN (1) | CN102264590B (ja) |
HK (1) | HK1159571A1 (ja) |
SG (1) | SG172138A1 (ja) |
TW (1) | TW201031544A (ja) |
WO (1) | WO2010095284A1 (ja) |
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EP2733041B1 (en) * | 2011-07-14 | 2019-09-11 | Kawasaki Jukogyo Kabushiki Kaisha | Railway vehicle truck |
DE102012002716B3 (de) * | 2012-02-14 | 2013-05-29 | Voith Patent Gmbh | Schienenrad |
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CN103381837A (zh) * | 2013-06-28 | 2013-11-06 | 长春轨道客车股份有限公司 | 100%低地板独立轮动力转向架双电机同轴两轮同步驱动机构 |
CN103381839A (zh) * | 2013-06-28 | 2013-11-06 | 长春轨道客车股份有限公司 | 100%低地板轻轨车刚性轮对单电机同轴两轮驱动机构 |
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Also Published As
Publication number | Publication date |
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CN102264590B (zh) | 2014-05-28 |
US8322289B2 (en) | 2012-12-04 |
SG172138A1 (en) | 2011-07-28 |
HK1159571A1 (en) | 2012-08-03 |
KR20110092332A (ko) | 2011-08-17 |
TW201031544A (en) | 2010-09-01 |
JP5010630B2 (ja) | 2012-08-29 |
JP2010188964A (ja) | 2010-09-02 |
US20110239899A1 (en) | 2011-10-06 |
KR101297854B1 (ko) | 2013-08-19 |
CN102264590A (zh) | 2011-11-30 |
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