JP5607433B2 - Railway vehicle - Google Patents

Description

  The present invention relates to a railway vehicle in which a vehicle body is mounted on a bolsterless carriage via an air spring, and more particularly to a railway vehicle in which deformation of the air spring during curve traveling is reduced.

  Since railcars absorb vibrations and shocks generated during travel, the carriage is provided with an axial spring between the wheel axle and an air spring between the carriage and the vehicle body. When a railway vehicle travels along a curve, it is necessary that the carriage rotates relative to the vehicle body so that it can travel smoothly along the curve. At that time, in the railway vehicle of the bolsterless bogie, the air spring installed between the vehicle body and the bogie supports the rotation of the bogie by the deformation that is stretched in the horizontal direction while absorbing the vertical vibration.

  On the other hand, in a bolster-equipped trolley equipped with a bolster (pillow beam), an air spring provided on the vehicle body is installed on the bolster. The bolster is provided so as to be rotatable via a center pin with respect to the horizontal position of the carriage frame, and the air spring is connected to the vehicle body side by a bolster anchor. Therefore, even if the carriage rotates with respect to the vehicle body when the railway vehicle runs along a curve, the air spring on the bolster is not deformed to extend in the horizontal direction.

JP 11-278261 A JP 2001-163219 A

  Railcars composed of bolsterless trucks allow the carriage to rotate relative to the vehicle body by deforming the air spring during curve driving, but the air spring supports the vehicle body in such a deformed state. There is a risk that the direction spring characteristics become unstable and the running stability is impaired. In a railway vehicle composed of this point bolster-equipped carriage, the air spring is not deformed in the horizontal direction by the rotation of the bolster.

  However, in the case of a cart with a bolster, parts such as a bolster and maintenance are costly, and the vehicle weight increases, so that energy consumption during running is contrary to the energy saving flow. Moreover, although it is necessary to make a vehicle body low from a barrier-free viewpoint, since a vehicle body position becomes high with a bolster, the process which changed the side beam of a trolley largely is required, and the cost will also become high also in this respect.

  In order to solve such problems, an object of the present invention is to provide a railway vehicle using a bolsterless bogie that suppresses deformation into an air spring without increasing costs.

The railcar according to the present invention has an air disposed in the vicinity of the joint between the side beam and the lateral beam with respect to the carriage in which the lateral beam disposed in the sleeper direction is joined to the left and right side beams disposed in the rail direction. be one equipped with a vehicle body via a spring, a slide mechanism for moving the air spring to a rail along the side beam between said carriage and said air springs are provided, the air spring side A connecting member that restrains movement in the rail direction is connected between the sliding plate and the vehicle body side, and the sliding mechanism includes a sliding plate made of a low friction material provided on the upper surface of the side beam, and the sliding The slider has a slider provided with a rotation support member that overlaps the upper surface of the plate and supports the movement of the air spring. The sliding plate has a hat shape in cross section, and has a pair of vertical slide portions and the vertical slide. Inside the slide A first horizontal slide portion located, have a second horizontal sliding portions of a pair located on opposite sides of the vertical slide unit, characterized by.

Further, in the railway vehicle according to the present invention, the slide mechanism is overlapped on the sliding plate made of a low friction material covered according to the shape of the upper side beam, and the sliding plate according to the shape of the upper side beam. It is preferable to have a slider.
In the railcar according to the present invention, the slide mechanism includes a sliding plate made of a low friction material provided on the upper surface of the side beam, and a rotation support that overlaps the upper surface of the sliding plate and sandwiches the side beam in the sleeper direction. It is preferable to have a slider provided with a member.

In addition, the railway vehicle according to the present invention is configured such that when the bogie is located outside the side beam when the center position of the air spring is located in the sleeper direction, the auxiliary block is located outside the side beam. The sliding mechanism includes a groove-shaped sliding plate made of a low friction material provided between the side beam and the auxiliary block, and a convex portion in the groove portion with respect to the sliding plate. It is preferable to have a slider that is fitted and overlaid.
In addition, the railway vehicle according to the present invention is configured such that when the bogie is located outside the side beam when the center position of the air spring is located in the sleeper direction, the auxiliary block is located outside the side beam. The sliding mechanism includes a sliding plate made of a low friction material provided on the upper surfaces of the side beam and the auxiliary block, and a rotation support member inserted between the side beam and the auxiliary block. It is preferable to have a slider provided and superimposed on the sliding plate.

In the railway vehicle according to the present invention, the slider has a communication hole communicating with the inside and the outside of the air spring, and a flexible pipe is connected to the outer opening of the communication hole. It is preferably connected to an auxiliary air chamber formed in the cross beam.
In the railway vehicle according to the present invention, the slider has a shaft portion protruding upward, the air spring is closed by a bottom plate fixed to a lower end, and the bottom plate is attached to and detached from the shaft portion. It is preferable that a possible boss portion is formed.
Moreover, it is preferable that the rail vehicle which concerns on this invention is provided with the turning mechanism between the said air spring and the said slide mechanism or the said vehicle body.
In the railway vehicle according to the present invention, it is preferable that the shaft portion and the boss portion have a cylindrical shape, and the air spring is rotatably attached on the slider.

  According to the present invention, the air spring is connected to the vehicle body side by the connecting member and the deformation in the rail direction is restrained even when the carriage rotates with respect to the vehicle body as the railway vehicle runs along a curve. The air spring moves relative to the rail in the rail direction by the slide mechanism. Therefore, the deformation of the air spring in the rail direction is suppressed, and accordingly, the spring characteristics are not unstable compared with the conventional bolsterless cart, and the running stability can be improved. In addition, since there is no bolster, manufacturing costs and maintenance costs can be reduced.

It is the side view which showed the connection part of a trolley | bogie and a vehicle body about 1st Embodiment of a rail vehicle. It is the figure which showed the AA cross section of FIG. 1 which shows the attachment structure of an air spring. It is the side view which showed the connection part of a trolley | bogie and a vehicle body about 2nd Embodiment of a rail vehicle. It is the figure which showed the BB cross section of FIG. 3 which shows the attachment structure of an air spring. It is sectional drawing which showed the connection part of a trolley | bogie and a vehicle body about 3rd Embodiment of a rail vehicle. It is sectional drawing which showed the connection part of a trolley | bogie and a vehicle body about 4th Embodiment of a rail vehicle. It is sectional drawing which showed the modification about the connection part of a trolley | bogie and a vehicle body about a railway vehicle.

  Next, an embodiment of a railway vehicle according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a connecting portion between a carriage and a vehicle body in the railway vehicle of the first embodiment. In this railway vehicle 1, a vehicle body 8 is mounted on a carriage 10 via an air spring 18. In the carriage 10, two side beams 11 arranged in the front-rear direction (rail direction; the same applies hereinafter) are penetrated by two horizontal beams 12 arranged in the horizontal direction (sleeper direction; the same applies hereinafter). It is comprised by the bogie frame with which the side beam 11 and the horizontal beam 12 were joined.

  In the carriage 10, a wheel shaft 13 disposed before and after the carriage frame is rotatably supported by an axle box 14. The axle box 14 is housed in a spring cap provided at the end of the side beam 11 and elastically supports the carriage 10 in the vertical direction and the horizontal direction with respect to the axle, such as a combination of a coil spring and laminated rubber. It is provided on the lower side of the end portion of the side beam 11 via the elastic member 15 that performs. A shaft beam 16 projects from the shaft box 14 and is pivotally attached to a bracket formed on the side beam 11.

  An air spring 18 is mounted on the side beam 11 in the vicinity of the joint with the horizontal beam 12 that is the center in the front-rear direction. In particular, in this embodiment, the air spring 18 moves in the front-rear direction along the side beam 11. It has a possible configuration. Here, FIG. 2 is a view showing an AA cross section of FIG. 1 showing an attachment structure of the air spring. A slide mechanism 20 is provided between the air spring 18 and the side beam 11, and is configured to suppress horizontal deformation caused by rotation of the carriage 10 relative to the vehicle body 8, particularly deformation generated in the front-rear direction.

  The side beam 11 having a rectangular cross section has a cross section hat-shaped substrate 21 bonded to the upper part thereof. The substrate 21 is formed with a flange portion 212 projecting left and right from a central portion 211 having a U-shaped cross section along the upper portion of the side beam 11. The base plate 21 has the flange portion 212 spanned between the two front and rear cross beams 12 and is joined. However, when traveling on the curve of the minimum turning radius in normal travel, the air spring 18 needs to be slidable as described later. Length. On the board | substrate 21, it joins so that the hat-shaped sliding plate 22 with the same cross section may be covered, and the slider 23 is slidably mounted on it. The sliding plate 22 is made of a wear-resistant resin such as polyamide, a low friction material such as polytetrafluoroethylene or MC nylon, or a sintered metal. Further, it may be formed by a coating material in which a metal plate is coated with the wear-resistant resin or the low friction material.

  The slider 23 is fitted to the sliding plate 22 in the same hat shape and is slidable in the front-rear direction without shifting in the lateral direction. A bracket 25 is integrally formed on the slider 23 on the laterally outer side of the carriage 1. As shown in FIG. 1, the bracket 25 extends downward, and an anchor 27 is connected to a tip of the bracket 25 between the bracket 25 and a bracket 26 fixed to the vehicle body 8 side. The anchor 27 connects the upper side and the lower side of the air spring 18 via the brackets 25 and 26 to restrain the deformation of the air spring 18 in the front-rear direction. Both ends, which are the connecting portions with the brackets 25 and 26, are coupled via a rubber bush, and displacement in the vertical direction is allowed.

  An air spring 18 is mounted on the slider 23. The air spring 18 is configured such that the opening portions at both ends of the diaphragm 31 constituting the main body are connected in an airtight state by a circular upper surface plate 32 and a lower surface plate 33, and are integrated with a lower laminated rubber 34. An air supply portion 321 having a through hole is formed at the center portion of the upper surface plate 32 so as to protrude upward, and is connected to a compressor (not shown) installed in the vehicle body 8. The lower surface plate 33 is formed with a communication hole 331 that communicates the inside of the laminated rubber 34 and the inside of the diaphragm 31 at the center portion.

  The laminated rubber 34 is a cylindrical body in which donut-shaped metal plates 341 and rubber members 342 are alternately overlapped and joined, and a donut-shaped joining plate 35 is integrated on the upper surface. The joining plate 35 and the lower surface plate 33 are fastened to constitute the air spring 18 in which the diaphragm 31 and the laminated rubber 34 are combined. The air spring 18 is detachably attached to the slider 23 and is mounted via a rotatable turning mechanism.

  The laminated rubber 34 is closed by a bottom plate 37 fixed to the lower end thereof, and a cylindrical boss portion 371 protruding inside the laminated rubber 34 is formed at the center of the bottom plate 37. On the other hand, a cylindrical shaft portion 232 is formed on the slider 23, and a boss portion 371 is rotatably fitted to the shaft portion 232. An O-ring is attached to the shaft portion 232 in order to maintain a sealing property with the boss portion 371, and the bottom plate 37 that rotates in contact with the slider 23 is coated with a low friction material on the lower surface.

  The carriage 10 has a configuration in which the internal space of the cross beam 12 serves as an auxiliary air chamber to increase the volume of the air spring 18 and obtain a viscous damping characteristic by interposing a throttle valve. In the present embodiment, a communication hole 231 is formed in the slider 23 to connect the auxiliary air chamber and the air spring 18, and a flexible pipe 36 is connected to the communication hole 231. The communication hole 231 communicates the inner space of the laminated rubber 34 and the outer side of the slider 23. Accordingly, the diaphragm 31 of the air spring 18 is connected to the auxiliary air chamber of the cross beam 12 through the communication hole 231 and the pipe 36 through the inside of the laminated rubber 34 through the communication hole 331 of the lower surface plate 33.

  According to the present embodiment, even when the carriage 10 rotates with respect to the vehicle body 8 as the railway vehicle 1 runs along a curve, the air spring 18 moves relative to the carriage 10 to move the air. The deformation of the spring 18 in the front-rear direction can be suppressed. In other words, the air spring 18 is connected to the vehicle body 8 side by the anchor 27 and is restrained from being deformed in the front-rear direction, and is moved in the front-rear direction along the side beam 11 by the slider 23 with respect to the carriage 10. Accordingly, the air spring 18 is prevented from being deformed in the front-rear direction, and accordingly, the spring characteristics are not unstable compared to the conventional bolsterless cart, and the running stability can be improved.

  Further, when the carriage 10 rotates with respect to the vehicle body 8, the bottom plate 37 rotates, whereby the torsion of the air spring 18 is suppressed. Therefore, also in this respect, the spring characteristics do not become unstable compared with the conventional bolsterless cart, and the running stability can be improved. Thus, the life can be extended by reducing the deformation of the air spring 18. Compared with a conventional bolster-equipped cart, since there is no bolster, manufacturing costs and maintenance costs can be reduced, and the vehicle weight can be reduced and the vehicle body 8 can be lowered.

  In addition, in the present embodiment, the stability of the curve traveling is improved by using the film length of the diaphragm 31 constituting the air spring 18 and increasing the maximum vehicle body inclination angle. That is, by adopting the structure of the present embodiment, the air spring 18 can extend upward by the amount that the horizontal deformation of the diaphragm 31 is suppressed, and there is no bolster, so there is no space between the vehicle body and the carriage. This is because the height can be increased by the laminated rubber 34 as much as it becomes wider. For example, when the distance between the air springs 18 arranged in the lateral direction is 2 m, in the conventional bolsterless carriage, the limit of the inclination angle between them is 2 degrees, but in this embodiment, it is 3 to 4 degrees. It became possible to tilt.

(Second Embodiment)
By the way, although the said embodiment demonstrated the trolley | bogie in which the center of the air spring 18 is located on the side beam 11, the railway vehicle in which the center position of an air spring is located outside a side beam by the difference in track width. is there. In such a railway vehicle, the air spring cannot be slid on the side beam. Then, next, the rail vehicle of 2nd Embodiment from which the position of an air spring differs from 1st Embodiment is demonstrated. FIG. 3 is a side view showing a connecting portion between a bogie and a vehicle body in the railway vehicle of the second embodiment, and FIG. 4 is a diagram showing a cross section taken along line BB in FIG. is there. In addition, the same code | symbol is attached | subjected and demonstrated about the same structure as 1st Embodiment.

  In the railway vehicle 2, the vehicle body 8 is mounted on the carriage 40 via the air spring 18. The carriage 40 is constituted by a carriage frame in which two lateral beams 42 in the transverse direction are joined to the two side beams 41 in the front-rear direction, and the wheel shaft 43 is rotatably supported via the axle box 44. Yes. The air spring 18 is attached in the vicinity of the joint between the side beam 41 and the lateral beam 42, and a slide mechanism 50 that can move in the front-rear direction along the side beam 41 is also provided in this embodiment. However, since a slide mechanism cannot be provided immediately above the side beam 41, an auxiliary block 46 is provided outside the side beam 41. The auxiliary block 46 is a cubic box body that is penetrated and joined by the two horizontal beams 42, and is arranged in parallel with the side beam 41 at a predetermined interval.

  A cross-sectional hat-shaped substrate 51 is joined to the rectangular cross-section side beam 41 and the upper part of the auxiliary block 46 so as to straddle both. The substrate 51 has a U-shaped central section 511 arranged downward so as to be fitted between the side beam 41 and the auxiliary block 46, and a flange portion 512 projecting left and right is a side beam 41 and the auxiliary block 46. It is on the top surface. As in the first embodiment, the substrate 51 has a length in the front-rear direction, the central portion 511 is spanned between the two front and rear transverse beams 42, and the flange portion 512 is joined to the upper surfaces of the side beams 41 and the auxiliary block 46. ing.

  On the board | substrate 51, it joins so that the cross section of the hat shape with the same cross section may be covered, and the slider 53 is slidably mounted on it. The sliding plate 52 is formed of, for example, a wear-resistant resin such as polyamide, a low friction material such as polytetrafluoroethylene or MC nylon, or a sintered metal, or the wear-resistant resin or low-friction material on a metal plate. Is formed by a coated coating material.

  The slider 53 is configured such that a convex portion 532 is fitted in a groove portion formed by a U-shaped portion of the sliding plate 52 and is slidable in the front-rear direction without shifting in the lateral direction. A bracket 55 is integrally formed on the slider 53 on the laterally outer side of the carriage 40. As shown in FIG. 3, the bracket 55 extends downward, and an anchor 57 is connected to a tip of the bracket 55 between the bracket 55 and the bracket 56 fixed to the vehicle body 8 side. The anchor 57 connects the upper side and the lower side of the air spring 18 via the brackets 55 and 56 and restrains the deformation of the air spring 18 in the front-rear direction. Both ends, which are connecting portions with the brackets 55 and 56, are coupled via a rubber bush, and displacement in the vertical direction is allowed.

  Similar to the first embodiment, the air spring 18 is mounted on the slider 53 via a turning mechanism that is detachable and rotatable. A cylindrical shaft portion 533 is formed on the slider 53, and a boss portion 371 of the bottom plate 37 is rotatably fitted to the shaft portion 533. The slider 53 is formed with a communication hole 531 that connects the inside of the laminated rubber 34 and the outside of the slider 53, and the flexible pipe 36 is connected to the communication hole 531. The air spring 18 is connected to a compressor (not shown) installed on the vehicle body 8 side through the air supply part 321 of the upper surface plate 32, and is connected to the communication hole 331 of the lower surface plate 33, the inside of the laminated rubber 34, the communication hole 531, and The pipe 36 is connected to the auxiliary air chamber of the cross beam 42.

  According to this embodiment, even if the carriage 40 rotates with respect to the vehicle body 8 as the railway vehicle 2 runs along a curve, the air spring 18 moves relative to the carriage 40 to move the air. The deformation of the spring 18 in the front-rear direction can be suppressed. That is, the air spring 18 is connected to the vehicle body 8 side by the anchor 57 and restrains deformation in the front-rear direction, while the air spring 18 moves in the front-rear direction along the side beam 41 with respect to the carriage 40 by the slider 53. Accordingly, since the air spring 18 is prevented from being deformed in the front-rear direction, the spring characteristics are not unstable compared with the conventional bolsterless cart, and the running stability can be improved.

  In addition, when the carriage 40 rotates with respect to the vehicle body 8, the bottom plate 37 rotates, so that the torsion of the air spring 18 is suppressed. Therefore, also in this respect, the spring characteristics do not become unstable compared with the conventional bolsterless cart, and the running stability can be improved. Furthermore, in this embodiment, the lifetime of the air spring 18 can be extended by reducing the deformation of the air spring 18 in this way. When compared with a conventional bolster-equipped carriage, since there is no bolster, manufacturing costs and maintenance costs can be reduced, and the vehicle weight can be reduced and the vehicle body 8 can be lowered.

  In addition, in the present embodiment, the stability of the curve traveling is improved by using the film length of the diaphragm 31 constituting the air spring 18 and increasing the maximum vehicle body inclination angle. That is, by adopting the structure of the present embodiment, the air spring 18 can extend upward by the amount that the horizontal deformation of the diaphragm 31 is suppressed, and there is no bolster, so there is no space between the vehicle body and the carriage. This is because the height can be increased by the laminated rubber 34 as much as it becomes wider. For example, when the distance between the air springs 18 arranged in the lateral direction is 2 m, in the conventional bolsterless carriage, the limit of the inclination angle between them is 2 degrees, but in this embodiment, it is 3 to 4 degrees. It became possible to tilt.

(Third embodiment)
Next, a rail vehicle according to a third embodiment, which is a modification of the first embodiment, will be described. FIG. 5 is a cross-sectional view showing a connecting portion between a bogie and a vehicle body in the railway vehicle of the third embodiment, and the same components as those in the first embodiment shown in FIG. In the present embodiment, as in the first embodiment, the air spring 18 has a center on the side beam 11 and is slidable along the side beam 11. In particular, in the present embodiment, a cam follower 62 is attached to the lower surface of the slider 61 to support the movement of the air spring 18 from the left and right lateral directions.

The slider 61 is formed with a bracket 25 projecting in the lateral direction, a communication hole (see the communication hole 231 in FIG. 2) to which the pipe 36 is connected, and a shaft portion 232. Also, two cam followers 62 that sandwich the side beam 11 from both the left and right sides are respectively arranged at two positions in the front and rear in the moving direction through the drawing. The surface of the slider 61 that contacts the sliding plate 22 is coated with, for example, an abrasion resistant resin.
Therefore, according to the present embodiment, the same effect as that of the first embodiment can be obtained, and the cam follower 62 can smoothly move without being strained even if a force around the vertical axis acts on the slider 61. Can be.

(Fourth embodiment)
Next, a rail vehicle according to a fourth embodiment, which is a modification of the second embodiment, will be described. FIG. 6 is a cross-sectional view showing a connecting portion between a bogie and a vehicle body in the railway vehicle of the fourth embodiment, and the same components as those of the second embodiment shown in FIG. In the present embodiment, as in the second embodiment, the air spring 18 has a center between the side beam 41 and the auxiliary block 46 and is configured to be slidable along the side beam 11. In particular, in the present embodiment, a cam follower 66 attached to the lower surface of the slider 65 is inserted into a groove portion 521 formed of a U-shaped portion of the sliding plate 52 to support the movement of the air spring 18 from the left and right lateral directions.

The slider 65 is formed with a bracket 55 projecting in the lateral direction, a communication hole (see the communication hole 531 in FIG. 4) to which the pipe 36 is connected, and a shaft portion 533. In addition, the cam followers 66 in the groove 521 are respectively arranged at two places in the front and rear in the moving direction through the drawing. The surface of the slider 65 that contacts the sliding plate 52 is coated with, for example, an abrasion resistant resin.
Therefore, according to the present embodiment, in addition to the same effects as those of the second embodiment, the cam follower 66 can smoothly move without being strained even if a force around the vertical axis acts on the slider 65. Can be.

As mentioned above, although embodiment was described about the rail vehicle of this invention, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.
In the above embodiment, the air spring 18 is rotatable. However, the air spring 18 may be configured not to rotate only by moving in the front-rear direction with respect to the sliders 23 and 53. For example, as shown in FIG. 7, the slider 23 may be configured similarly to the first embodiment shown in FIG. 2, and the air spring 18 may be directly fixed to the slider 23. Further, as in the first and second embodiments, the air spring 18 can be attached to and detached from the slider 23, but it may be configured not to rotate.

In the above embodiment, the air spring 18 is provided with a turning mechanism between the air spring 18 and the slider 53. For example, the air supply portion 321 of the air spring 18 is rotatably fitted in a boss portion formed on the vehicle body 8 side. A turning mechanism may be provided between the vehicle body 8 and the vehicle body 8. Furthermore, in addition to the coating of the low friction material applied to the bottom plate 37, a turning bearing or the like may be used for the turning mechanism.
In the third and fourth embodiments, the cam follower is used. However, a needle roller bearing or a guide bearing may be used.

DESCRIPTION OF SYMBOLS 1 Railcar 8 Car body 10 Bogie 11 Side beam 12 Side beam 20 Slide mechanism 21 Board 22 Slide plate 23 Slider 25, 26 Bracket 27 Anchor 31 Diaphragm 34 Laminated rubber

Claims (8)

The vehicle body is mounted via an air spring arranged in the vicinity of the joint between the side beam and the cross beam, with respect to the cart in which the cross beam arranged in the sleeper direction is joined to the left and right side beams arranged in the rail direction. In railway vehicles,
Slide mechanism for moving the rail direction is provided to the air spring between the bogie and the air spring along the side beam, the movement in the rail direction between the air spring side and the vehicle body The connecting member to be restrained is connected ,
The slide mechanism includes a slide plate made of a low friction material provided on the upper surface of the side beam, and a slider provided with a rotation support member that overlaps the upper surface of the slide plate and supports the movement of the air spring. There is,
The sliding plate has a hat-shaped cross section, and includes a pair of vertical slide portions, a first horizontal slide portion located in the middle of the vertical slide portions, and a pair of second horizontal slides located on both sides of the vertical slide portion. Having a part,
A railway vehicle characterized by The railway vehicle according to claim 1,
The slide mechanism are those having the side beam over the slip made of a low friction material covered according to the shape plate, and the slider superimposed on the sliding plate in accordance with the said side beam upper shape A railway vehicle characterized by that. The railway vehicle according to claim 1,
In the bogie, when the center position of the air spring is located outside the side beam as seen in the sleeper direction, an auxiliary block is joined to the side beam outside the side beam,
Said slide mechanism includes: the side beam and the groove-shaped of the sliding plate made of a low friction material provided between said auxiliary block, superimposed by fitting the protrusion in the groove with respect to the sliding plate A rail vehicle comprising the slider. The railway vehicle according to claim 1,
In the bogie, when the center position of the air spring is located outside the side beam as seen in the sleeper direction, an auxiliary block is joined to the side beam outside the side beam,
The slide mechanism, the side beam and the said sliding plate made of a low friction material provided on the upper surface of the auxiliary block, the sliding plate rotation support member is provided to be inserted between the side beam and the auxiliary block A railway vehicle comprising the slider superimposed on the rail. The railway vehicle of any one of claims 1 to 4,
Wherein the slider communicating hole communicating the inside and outside of the air spring is formed, wherein the flexible pipe to the outer opening of the communication hole are connected, the pipe in the auxiliary air chambers formed in the cross beam A railway vehicle characterized by being connected. The railway vehicle of any one of claims 1 to 5,
A shaft portion protruding upward is formed on the slider, the air spring is closed by a bottom plate fixed to a lower end, and a boss portion detachable from the shaft portion is formed on the bottom plate. A railway vehicle characterized by being. In the railway vehicle according to any one of claims 1 to 5 ,
A railway vehicle characterized in that a turning mechanism is provided between the air spring and the slide mechanism or the vehicle body. In the railway vehicle according to claim 6 ,
The shaft portion and the boss portion has a cylindrical shape, a railway vehicle, characterized in that said air spring in which rotatably mounted on the slider.

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