Padded tool for bogie primary suspension

Abstract

The utility model relates to the technical field of frock, provide a kind of for bogie primary suspension's pad adding frock, including bearing device and a pair of jacking device, bearing device is suitable for supporting at the bottom surface of pit track, the top of bearing device has bearing surface, and the height direction of bearing surface is perpendicular to bearing device;Jacking device is set to bearing surface, and the jacking part of jacking device is suitable for lifting along the height direction of bearing device, and a pair of jacking device respectively corresponds a pair of primary spring of primary suspension, and the jacking part of jacking device is suitable for being resisted in the bottom of primary spring of primary suspension. So set, bearing device is set in pit track, jacking device can jacking primary spring, so that pad can be added between primary spring and axle box. Without transferring rail vehicle, pad adding operation can be completed directly in pit track, and it is simple to operate, and it is convenient and saves effort, and maintenance efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, and provides a padding tooling for the primary suspension of a bogie. Background Technology

[0002] During the maintenance of rail vehicles, it is necessary to measure and adjust the height of the primary suspension. This is mainly done by adding or removing shims under the primary suspension springs.

[0003] In related technologies, maintenance of rail vehicles is typically carried out on underground tracks. When the height of the primary suspension needs to be adjusted, the vehicle usually needs to be moved to the lifting machine track, the entire vehicle is lifted by the lifting machine, the bogies are disassembled, and then shims can be added or removed under the primary suspension springs. This operation is complex, time-consuming, and labor-intensive, increasing labor costs. Moreover, it adds the steps of adjusting and pulling the vehicle and operating the lifting machine, creating a complex working environment with many safety factors, risks, and potential hazards, thus affecting maintenance efficiency.

[0004] Therefore, how to solve the problem of transferring the rail vehicle to the jacking machine track when adjusting the height of the primary suspension has become an important technical problem for those skilled in the art. Utility Model Content

[0005] This utility model provides a padding tool for the primary suspension of a bogie, which solves the defect in related technologies that require the rail vehicle to be transferred to the jacking machine track when adjusting the height of the primary suspension. The padding operation can be performed directly on the pit track, avoiding the need to transfer the rail vehicle.

[0006] This utility model provides a padding fixture for the primary suspension of a bogie, comprising: A support device adapted to support the bottom surface of a pit track, the top of the support device having a support surface perpendicular to the height direction of the support device; A pair of lifting devices are disposed on the bearing surface. The lifting portion of the lifting device is adapted to move up and down along the height direction of the bearing device. Each pair of lifting devices corresponds to a pair of primary suspension springs. The lifting portion of the lifting device is adapted to abut against the bottom of the primary suspension spring.

[0007] The padding fixture for bogie primary suspension provided by this utility model further includes: An adjusting device is adapted to be disposed between the lifting device and the bearing surface, and the adjusting device is adapted to adjust the distance between the bottom end of the lifting device and the bearing surface along the height direction of the bearing device.

[0008] According to the present invention, a padding fixture for bogie primary suspension is provided, wherein the adjustment device includes: Adjust the shims; there should be at least two shims. The thickness of each of the adjustment pads is the same, and at least two of the adjustment pads can be stacked along the height direction of the bearing device; or, at least two of the adjustment pads have different thicknesses.

[0009] According to the present invention, a padding fixture for bogie primary suspension is provided, wherein the bearing device includes: A support frame, wherein the support surface is disposed on the top of the support frame; The traveling wheels and adjustable feet are located at the bottom of the support frame. The bottom of the adjustable feet is a support part, which can be raised and lowered along the height direction of the support frame.

[0010] According to the present invention, a padding fixture for bogie primary suspension is provided, wherein the support frame includes: Frame; A support plate is disposed at the top of the frame, the support plate is slidably connected to the frame, the sliding direction of the support plate relative to the frame is perpendicular to the height direction of the frame, and the surface of the support plate away from the frame is the support surface; A drive mechanism is disposed between the support plate and the frame, and the drive mechanism is adapted to drive the support plate to slide back and forth relative to the frame.

[0011] According to the present invention, a padding fixture for bogie primary suspension is provided, the frame comprising: A pair of end supports, wherein the plane of one of them is parallel to the plane of the other, and the distribution direction of the pair of end supports is perpendicular to the plane of the end supports; An intermediate support is disposed between the pair of end supports, the plane of the intermediate support is perpendicular to the plane of the end supports, and both of the end supports are fixedly connected to the intermediate support. A support plate is disposed at the top of the intermediate support. The plane of the support plate is perpendicular to the plane of the intermediate support, and the length direction of the support plate is parallel to the plane of the intermediate support. A bearing plate is slidably disposed on the support plate, and the sliding direction of the bearing plate relative to the support plate is parallel to the length direction of the support plate.

[0012] According to the present invention, a padding fixture for bogie primary suspension is provided, wherein the adjusting foot includes: First adjusting feet, at least two first adjusting feet are provided at the bottom end of each of the end brackets, and the first adjusting feet are spaced apart; The second adjusting foot is provided at the bottom end of the intermediate support. There are at least two second adjusting feet, and each second adjusting foot is distributed at intervals.

[0013] According to the present invention, a padding fixture for bogie primary suspension is provided, wherein the traveling wheel includes: The first end of each of the end brackets is provided with a caster wheel; A directional wheel is provided at the second end of each of the end brackets, and the axis of the directional wheel is perpendicular to the plane in which the end bracket is located.

[0014] According to the present invention, a padding fixture for bogie primary suspension is provided, wherein the drive mechanism includes: A rotating part is rotatably mounted on the support plate along a fixed axis; A movable part is reciprocally slidably disposed on the support plate. The sliding direction of the movable part relative to the support plate is parallel to the length direction of the support plate. The movable part is drivenly connected to the rotating part and fixedly connected to the bearing plate. The rotating handle is connected to the rotating part in a transmission manner.

[0015] According to the present invention, a padding fixture for bogie primary suspension is provided, wherein the bearing device further includes: A guide assembly is disposed between the carrier plate and the support plate, and the axis of the guide assembly is parallel to the length direction of the support plate.

[0016] This utility model provides a shim-adding fixture for the primary suspension of a bogie, comprising a supporting device and a pair of lifting devices. The supporting device is used to support the bottom surface of the pit track and to provide support. The top of the supporting device has a bearing surface, which is perpendicular to the height direction of the supporting device. The lifting devices are disposed on the bearing surface, and the lifting part of the lifting device can move up and down along the height direction of the supporting device. The pair of lifting devices correspond to a pair of primary suspension springs, and the lifting part of the lifting device is used to abut against the bottom of the primary suspension spring. When the rail vehicle is located in the pit track, the shim-adding fixture for the primary suspension of the bogie provided by this utility model is placed inside the pit track. By raising and lowering the lifting part of the lifting device, an upward force along the height direction of the supporting device can be applied to the bottom of the primary suspension spring, thereby lifting the primary suspension spring and creating a gap between the limiting step of the primary suspension spring and the upper end wall of the through hole of the axle box, allowing the shim-adding operation to be performed. With this setup, when adjusting the height of the primary suspension, there is no need to transfer rail vehicles; the padding operation can be completed directly on the pit rail. The operation is simple, time-saving, and labor-saving, which can improve maintenance efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the padding fixture for the primary suspension of a bogie provided by this utility model.

[0019] Figure 2 This is a top view of the padding fixture for the primary suspension of a bogie provided by this utility model.

[0020] Figure 3 This is the front view of the padding fixture for the primary suspension of a bogie provided by this utility model.

[0021] Figure 4 This is a side view of the padding fixture for the primary suspension of a bogie provided by this utility model.

[0022] Figure 5 This is a schematic diagram showing the relative position of the primary suspension spring and the axle box body provided by this utility model.

[0023] Figure label: 1. Limiting step; 2. Jack; 3. Bearing plate; 4. End support; 5. Intermediate support; 6. Support plate; 7. First adjusting foot; 8. Second adjusting foot; 9. Caster wheel; 10. Directional wheel; 11. Rotating part; 12. Rotating handle; 13. Guide assembly; 14. Handrail; 15. Axle box body; 16. Primary spring. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] The bogie's primary suspension is mounted on the axle box 15, with two primary suspension springs 16 corresponding to the two ends of the axle box 15. Through holes are provided at both ends of the axle box 15, with the lower end of each primary suspension spring 16 located within one of these holes. A limiting step 1 is provided around the periphery of each primary suspension spring 16 to abut against the upper wall of the through hole. Fasteners are located below the through holes to securely connect with the lower end of each primary suspension spring 16, preventing it from dislodging. When the height of the primary suspension needs adjustment, the fasteners must be removed, and a shim is added between the limiting step 1 around the primary suspension spring 16 and the upper wall of the through hole in the axle box 15. This allows the limiting step 1 to act against the upper wall of the through hole in the axle box 15 through the shim.

[0026] The following is combined with Figures 1 to 5 This invention describes a padding fixture for the primary suspension of a bogie.

[0027] like Figures 1 to 5 As shown, the padding fixture for bogie primary suspension provided in this embodiment of the present invention includes a bearing device and a pair of lifting devices.

[0028] Specifically, the support device is used to support the bottom surface of the pit track and to support the load.

[0029] The top of the load-bearing device has a load-bearing surface, which is perpendicular to the height direction of the load-bearing device. A lifting device is installed on the load-bearing surface, and the lifting part of the lifting device can move up and down along the height direction of the load-bearing device. A pair of lifting devices corresponds to a pair of primary suspension springs 16, and the lifting part of the lifting device is used to abut against the bottom of the primary suspension spring 16.

[0030] The rail vehicle is located in the pit track. The padding fixture for the bogie primary suspension provided in this embodiment is placed inside the pit track. By raising and lowering the lifting part of the lifting device, an upward force along the height direction of the bearing device can be applied to the bottom of the primary suspension primary spring 16, thereby lifting the primary suspension primary spring 16. A gap is generated between the limiting step 1 of the primary suspension primary spring 16 and the upper end wall of the through hole of the axle box 15, so that the padding operation can be performed.

[0031] With this setup, when adjusting the height of the primary suspension, there is no need to transfer rail vehicles; the padding operation can be completed directly on the pit rail. The operation is simple, time-saving, and labor-saving, which can improve maintenance efficiency.

[0032] In this embodiment of the utility model, the padding fixture for the bogie primary suspension also includes an adjustment device. The adjustment device is used to be set between the lifting device and the bearing surface. The adjustment device can adjust the distance between the bottom end of the lifting device and the bearing surface along the height direction of the bearing device.

[0033] The height of the supporting device and the maximum lifting stroke of the lifting device are fixed, while the depth of different pit tracks varies. When the depth of the pit track is small, the lifting distance of the lifting part of the lifting device is less than the maximum lifting stroke of the lifting device, and the lifting part is already able to lift the bottom end of the primary suspension spring 16.

[0034] When the pit track is deep, even when the lifting part of the lifting device reaches its maximum lifting stroke, it still cannot interact with the bottom of the primary suspension spring 16. In this case, the distance between the bottom of the lifting device and the bearing surface is increased by using the adjustment device. That is, by increasing the overall height of the lifting device, the distance between the lifting part and the bottom of the pit track can be increased, so that the lifting part can lift the bottom of the primary suspension spring 16.

[0035] This configuration, along with the adjustment device, effectively improves the adaptability of the padding fixture for the bogie primary suspension provided in this embodiment, making it suitable for pit tracks of different depths.

[0036] In this embodiment, the adjustment device includes adjustment pads, and at least two adjustment pads are provided. The adjustment pads are used to be placed between the bottom end of the lifting device and the bearing surface.

[0037] In some embodiments, the thickness of each adjusting pad is uniform, and at least two adjusting pads can be stacked along the height direction of the supporting device. Depending on the actual situation, an appropriate number of adjusting pads are selected as needed. When two or more adjusting pads are selected, the selected adjusting pads are stacked along the height direction of the supporting device.

[0038] In other embodiments, at least two adjusting shims have different thicknesses. The appropriate thickness of the adjusting shim can be selected as needed, depending on the actual situation. Specifically, one adjusting shim with a thickness of 100 mm, two adjusting shims with a thickness of 50 mm, and four adjusting shims with a thickness of 20 mm can be provided.

[0039] It should be noted that the projected areas of each adjusting pad overlap along the height direction of the supporting device, and the projected area of ​​the lifting device is located inside the projected area of ​​the adjusting pad, which can increase the stability of the lifting device.

[0040] In this embodiment of the invention, the lifting device includes jacks 2, which are placed on the bearing surface. A pair of jacks 2 are spaced apart, each corresponding to a pair of suspension springs 16.

[0041] Jack 2 has excellent load-bearing capacity and stability, and can smoothly lift the primary suspension spring 16. Moreover, Jack 2 has a simple structure, is easy to operate, low in cost, and easy to maintain.

[0042] In some embodiments, the jack 2 can be fixed to the bearing surface, or the position of the jack 2 can be adjusted on the bearing surface.

[0043] In other embodiments, the jacks 2 are not connected to the bearing surface. After adjusting the position of the bearing device according to the position of the primary suspension, the pair of jacks 2 are placed on the bearing surface. In this way, the position of the pair of jacks 2 can be manually adjusted according to the position of the primary suspension spring 16.

[0044] The aforementioned jack 2 can be a hydraulic jack with a rated lifting capacity of 6 tons. The aforementioned jack 2 can also be a thin-type jack, which has a lower height, is suitable for confined spaces, and has strong stability. In this embodiment, the selected thin-type jack has a height of less than or equal to 100 mm.

[0045] In this embodiment of the utility model, the supporting device includes a support frame, wheels, and adjustable feet.

[0046] The support frame serves as the main structure of the support device, and the height direction of the support frame is the same as the height direction of the support device.

[0047] The traveling wheels and adjustable feet are located at the bottom of the support frame. The traveling wheels facilitate the movement of the support frame. The bottom of the adjustable feet forms a support section, which can be raised and lowered along the height of the support frame. The support section can be lowered to contact the bottom surface of the pit track, disengaging the traveling wheels from the bottom surface of the pit track. Alternatively, the support section can be raised to disengage from the bottom surface of the pit track, allowing the traveling wheels to contact the bottom surface of the pit track.

[0048] When adjusting the position of the load-bearing device, the support is raised, with a gap between the support and the bottom surface of the pit track. The traveling wheels roll in contact with the bottom surface of the pit track, which reduces the movement resistance of the load-bearing frame. When it is determined that the height of the primary suspension needs to be adjusted, the load-bearing device is moved below the primary suspension, ensuring that the lifting part of the jacking device is below the primary spring 16 of the primary suspension. This allows the lifting part of the jacking device to enter the through hole of the axle box 15 when it rises, so that the lifting part of the jacking device can abut against the bottom end of the primary spring 16 of the primary suspension.

[0049] After adjusting the position of the support frame, the support unit is lowered so that there is a gap between the traveling wheels and the bottom surface of the pit track, and the support unit contacts the bottom surface of the pit track. At this time, the support unit and the support frame share the load to ensure the load-bearing capacity.

[0050] In this embodiment, the support frame includes a frame body, a support plate 3, and a drive mechanism.

[0051] The frame serves as the main structure of the support frame, with the support plate 3 positioned at its top. The support plate 3 is slidably connected to the frame, and its sliding direction relative to the frame is perpendicular to the height of the frame. The surface of the support plate 3 furthest from the frame serves as the bearing surface. A drive mechanism is located between the support plate 3 and the frame, and is used to drive the support plate 3 to slide reciprocally relative to the frame to adjust its position.

[0052] The space in the pit track is limited, and it contains spaced columns. When placing the support device on the pit track, the position adjustment of the support frame is restricted. When placing the support device on the pit track, the sliding direction of the support plate 3 relative to the frame is parallel to the longitudinal direction of the pit track. When the rail vehicle stops on the pit track, the stopping position may deviate. By sliding the support plate 3 relative to the frame, the position of the support plate 3 and the position of the lifting device can be adjusted along the longitudinal direction of the pit track, ensuring that the lifting part of the lifting device is aligned with the bottom end of the primary suspension spring 16, thus reducing the precision requirements for the stopping position of the rail vehicle.

[0053] In this embodiment, the frame includes an end bracket 4, a middle bracket 5, and a support plate 6.

[0054] The end supports 4 are provided in pairs, with the plane of one end support 4 being parallel to the plane of the other end support 4. The distribution direction of the pair of end supports 4 is perpendicular to the plane of the end supports 4.

[0055] A pair of end supports 4 are spaced apart, and a middle support 5 is disposed between the pair of end supports 4. The plane of the middle support 5 is perpendicular to the plane of the end supports 4, and both end supports 4 are fixedly connected to the middle support 5. Figure 1 and Figure 2 As shown, after the middle bracket 5 is connected to a pair of end brackets 4, its top view is "I" shaped.

[0056] The support plate 6 is located at the top of the intermediate support 5. The plane of the support plate 6 is perpendicular to the plane of the intermediate support 5, and the length of the support plate 6 is parallel to the plane of the intermediate support 5. The intermediate support 5 is completely located below the support plate 6 and extends from one end of the support plate 6 to the other. The support plate 6 can be stably supported at all points by the intermediate support 5, and the force on the support plate 6 at all points can be distributed to the intermediate support 5, thereby improving the load-bearing capacity of the support plate 6 and the entire load-bearing device.

[0057] The bearing plate 3 is disposed on the support plate 6, and the bearing plate 3 and the support plate 6 are slidably connected. The sliding direction of the bearing plate 3 relative to the support plate 6 is parallel to the length direction of the support plate 6.

[0058] The materials of the aforementioned intermediate support 5, end support 4 and bearing plate 3 may be, but are not limited to, Q235 steel.

[0059] In this embodiment of the utility model, the adjustable feet include a first adjustable foot 7 and a second adjustable foot 8.

[0060] At least two first adjusting feet 7 are provided at the bottom of each end bracket 4, and the first adjusting feet 7 are spaced apart. At least two second adjusting feet 8 are provided at the bottom of the middle bracket 5, and the second adjusting feet 8 are spaced apart.

[0061] With this configuration, adjustable feet are installed at various positions at the bottom of the support frame to ensure stable support for the support frame.

[0062] The first adjusting foot 7 and the second adjusting foot 8 have the same structure, and are both threadedly connected to the bottom end of the end bracket 4 or the bottom end of the intermediate bracket 5. The bottom end of the first adjusting foot 7 and the bottom end of the second adjusting foot 8 are both provided with a support plate. By turning the adjusting foot, the support plate can be raised and lowered with the adjusting foot.

[0063] In this embodiment, the traveling wheels include omnidirectional wheels 9 and directional wheels 10.

[0064] Each end bracket 4 is provided with a caster wheel 9 at its first end and a directional wheel 10 at its second end. The axis of the directional wheel 10 is perpendicular to the plane in which the end bracket 4 is located.

[0065] Both the swivel casters 9 and the directional casters 10 make rolling contact with the bottom surface of the pit track, which reduces the resistance to position adjustment of the support frame. The swivel casters 9 improve the flexibility and steering ability of the support frame, while the directional casters 10 improve the driving stability of the support frame.

[0066] In this embodiment of the invention, the drive mechanism includes a rotating part 11, a moving part, and a rotating handle 12.

[0067] The rotating part 11 is rotatably mounted on the support plate 6, and the moving part is reciprocally sliding on the support plate 6. The sliding direction of the moving part relative to the support plate 6 is parallel to the length direction of the support plate 6. The moving part is connected to the rotating part 11 in a transmission manner, and the moving part is fixedly connected to the bearing plate 3.

[0068] The rotating handle 12 is connected to the rotating part 11. The operator applies torque to the rotating handle 12, causing the rotating handle 12 to rotate relative to the support plate 6, thereby driving the moving part to slide relative to the support plate 6. The bearing plate 3 will slide synchronously with the moving part, thereby realizing the position adjustment of the bearing plate 3.

[0069] In a specific embodiment, the drive mechanism can be configured as a screw and nut transmission structure, wherein the screw serves as the rotating part 11, the nut serves as the moving part, and the rotating handle 12 is fixedly connected to one end of the screw.

[0070] In this embodiment, the supporting device further includes a guide component 13, which is disposed between the supporting plate 3 and the support plate 6. The axis of the guide component 13 is parallel to the length direction of the support plate 6. The guide component 13 can guide the sliding of the supporting plate 3 relative to the support plate 6, ensuring the sliding stability of the supporting plate 3.

[0071] In a specific embodiment, the guide component 13 may be configured as a guide rail slider structure, but is not limited to that described above.

[0072] In some embodiments, a handrail 14 is also provided on the support frame to facilitate the operator to apply force to the support frame in order to adjust the position of the support frame.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A padding fixture for the primary suspension of a bogie, characterized in that, include: A support device adapted to support the bottom surface of a pit track, the top of the support device having a support surface perpendicular to the height direction of the support device; A pair of lifting devices are provided on the bearing surface. The lifting part of the lifting device is adapted to move up and down along the height direction of the bearing device. The pair of lifting devices corresponds to a pair of primary suspension springs (16). The lifting part of the lifting device is adapted to abut against the bottom of the primary suspension spring (16).

2. The padding fixture for bogie primary suspension according to claim 1, characterized in that, Also includes: An adjusting device is adapted to be disposed between the lifting device and the bearing surface, and the adjusting device is adapted to adjust the distance between the bottom end of the lifting device and the bearing surface along the height direction of the bearing device.

3. The padding fixture for bogie primary suspension according to claim 2, characterized in that, The regulating device includes: Adjust the shims; there should be at least two shims. The thickness of each of the adjustment pads is the same, and at least two of the adjustment pads can be stacked along the height direction of the bearing device; or, at least two of the adjustment pads have different thicknesses.

4. The padding fixture for bogie primary suspension according to any one of claims 1-3, characterized in that, The supporting device includes: A support frame, wherein the support surface is disposed on the top of the support frame; The traveling wheels and adjustable feet are located at the bottom of the support frame. The bottom of the adjustable feet is a support part, which can be raised and lowered along the height direction of the support frame.

5. The padding fixture for bogie primary suspension according to claim 4, characterized in that, The support frame includes: Frame; A support plate (3) is disposed at the top of the frame. The support plate (3) is slidably connected to the frame. The sliding direction of the support plate (3) relative to the frame is perpendicular to the height direction of the frame. The surface of the support plate (3) away from the frame is the support surface. A drive mechanism is disposed between the support plate (3) and the frame, and the drive mechanism is adapted to drive the support plate (3) to slide back and forth relative to the frame.

6. The padding fixture for bogie primary suspension according to claim 5, characterized in that, The frame includes: A pair of end supports (4), wherein the plane of one of them is parallel to the plane of the other, and the distribution direction of the pair of end supports (4) is perpendicular to the plane of the end supports (4); An intermediate support (5) is disposed between a pair of end supports (4), the plane of the intermediate support (5) is perpendicular to the plane of the end supports (4), and both of the end supports (4) are fixedly connected to the intermediate support (5). A support plate (6) is disposed at the top of the intermediate support (5). The plane of the support plate (6) is perpendicular to the plane of the intermediate support (5). The length direction of the support plate (6) is parallel to the plane of the intermediate support (5). The bearing plate (3) is slidably disposed on the support plate (6). The sliding direction of the bearing plate (3) relative to the support plate (6) is parallel to the length direction of the support plate (6).

7. The padding fixture for bogie primary suspension according to claim 6, characterized in that, The adjustable feet include: First adjusting feet (7), at least two first adjusting feet (7) are provided at the bottom end of each end bracket (4), and each first adjusting foot (7) is spaced apart; The second adjusting foot (8) is located at the bottom of the intermediate support (5). There are at least two second adjusting feet (8), and each second adjusting foot (8) is spaced apart.

8. The padding fixture for bogie primary suspension according to claim 6, characterized in that, The traveling wheels include: The caster wheel (9) is provided at the first end of each of the end brackets (4); A directional wheel (10) is provided at the second end of each of the end brackets (4), and the axis of the directional wheel (10) is perpendicular to the plane of the end bracket (4).

9. The padding fixture for bogie primary suspension according to claim 6, characterized in that, The drive mechanism includes: A rotating part (11) is rotatably disposed on the support plate (6) on a fixed axis. The movable part is reciprocally slidably disposed on the support plate (6). The sliding direction of the movable part relative to the support plate (6) is parallel to the length direction of the support plate (6). The movable part is connected to the rotating part (11) in a transmission manner. The movable part is fixedly connected to the bearing plate (3). The rotating handle (12) is connected to the rotating part (11) in a transmission manner.

10. The padding fixture for bogie primary suspension according to claim 6, characterized in that, The supporting device further includes: A guide component (13) is disposed between the bearing plate (3) and the support plate (6), and the axis of the guide component (13) is parallel to the length direction of the support plate (6).

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