Pedal assembly, through passage and railway vehicle
By designing a pedal assembly with rollers and guide components, the problem of pedal edge scratching was solved, achieving stable movement on different curves and protecting internal vehicle components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-10
AI Technical Summary
When the lateral displacement of the pedal assembly in existing rail vehicles is large, the edge of the pedal is prone to rubbing against the canopy or windshield frame of the folding canopy assembly, resulting in damage.
Design a pedal assembly including a lower pedal assembly, a first connecting assembly and a second connecting assembly. The lower pedal assembly is composed of first and second mounting frames. The second mounting frame rolls on the vehicle body via rollers and a wear-resistant plate. The guide assembly guides the movement via guide ribs and guide wheels, forming a parallelogram structure to prevent the pedal edge from protruding.
It effectively prevents the edge of the pedal from scratching the tarpaulin or windshield frame, protects the internal components of the vehicle, and adapts to the vehicle's movement requirements on different curves.
Smart Images
Figure CN224104066U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of rail vehicles, in particular to a pedal assembly for a rail vehicle, a through passage comprising the pedal assembly, and a rail vehicle comprising the pedal assembly or the through passage. BACKGROUND
[0002] The through passage of a metro vehicle device is used to connect two adjacent carriages and can be of a whole type or a split type. The split type through passage can comprise two folding shed assemblies connected to two adjacent carriages respectively and two intermediate frames connected to the corresponding folding shed assemblies, and the connection of two adjacent carriages is realized by the coupling and uncoupling of the two intermediate frames abutting each other. The split type through passage also comprises two pedal assemblies arranged above the bottom of the folding shed assembly correspondingly. Most of the existing pedal assemblies are of a lap type, and the pedal assembly can comprise a lower pedal and an upper pedal lapped on the lower pedal, the lower pedal is installed on the floor surface and end wall of the vehicle body, and the upper pedal is installed on the intermediate frame. During the running of the vehicle, the upper and lower pedals can slide relative to each other to meet the rotation and transverse movement between adjacent carriages when the direction of the vehicle is changed.
[0003] However, the pedal assembly of the prior art has only upper and lower pedals, and when the through passage has a large transverse displacement, the edges of the pedals will protrude more, and when the edges of the pedals are close to the tarpaulin or windshield frame of the folding shed assembly, the edges will scratch the tarpaulin or windshield frame, thereby damaging the tarpaulin or windshield frame. SUMMARY
[0004] The utility model aims at solving at least one of the above problems and / or other problems in the prior art.
[0005] To achieve the above-mentioned purpose, according to one aspect of the utility model, a pedal assembly for a rail vehicle is provided, the rail vehicle comprising a vehicle body, a folding shed assembly and an intermediate frame connected in sequence, the pedal assembly comprising a lower pedal assembly, a first connecting assembly and a second connecting assembly, the lower pedal assembly being arranged above the bottom of the folding shed assembly and comprising a first mounting bracket and a second mounting bracket arranged opposite and parallel to each other, the second mounting bracket being able to swing transversely relative to the first mounting bracket, the first mounting bracket being connected to the intermediate frame through the first connecting assembly, and the second mounting bracket being connected to the vehicle body through the second connecting assembly, wherein the second connecting assembly comprises a plurality of rollers and a plurality of wear plates, the plurality of rollers being arranged on the second mounting bracket at intervals, and the plurality of wear plates being arranged on the upper surface of the vehicle body at intervals and for the corresponding rollers to abut against.
[0006] According to an example of the utility model, the second connecting assembly further comprises only one guide assembly.
[0007] According to an example of the utility model, the guide assembly includes two guide ribs respectively extending along the longitudinal direction of the vehicle and a guide wheel arranged between the two guide ribs, one of the two guide ribs is fixed to one of the vehicle body and the second mounting frame and is spaced apart from the other one by a distance, and the guide wheel is fixed to the other one of the vehicle body and the second mounting frame and can abut against one of the two guide ribs.
[0008] According to an example of the utility model, the guide rib is fixed to the vehicle body and extends vertically at least partially towards the second mounting frame, and the guide wheel includes a limiting shaft fixed to the second mounting frame and extending vertically between the two guide ribs towards the vehicle body and a wheel body sleeved onto the limiting shaft.
[0009] According to an example of the utility model, the first connecting assembly includes a connecting support connected to the intermediate frame, and a first support plate and a second support plate abutting against each other, the first support plate is connected to the connecting support, and the second support plate is connected to the first mounting frame.
[0010] According to an example of the utility model, the first connecting assembly further includes a connecting sleeve and a connecting column, the connecting sleeve is connected to one of the intermediate frame and the first mounting frame, the connecting column is connected to the other one of the intermediate frame and the first mounting frame and is inserted into the connecting sleeve, and the inner diameter of the connecting sleeve is greater than the outer diameter of the connecting column.
[0011] According to an example of the utility model, the connecting column is configured in a ball head shape.
[0012] According to an example of the utility model, the lower pedal assembly further includes a plurality of movable profiles and a plurality of fixed profiles arranged alternately, each movable profile is installed between the first mounting frame and the second mounting frame via a first positioning pin and is provided with a receiving portion on the side, and each fixed profile is installed between the first mounting frame and the second mounting frame via a second positioning pin and a side portion thereof is partially received in the receiving portion of the adjacent movable profile.
[0013] According to an example of the utility model, the pedal assembly further includes an upper pedal, a first end of the upper pedal is connected to the vehicle body and is arranged above the lower pedal assembly, and a second end of the upper pedal opposite to the first end abuts against the top surface of the lower pedal assembly.
[0014] According to another aspect of the utility model, a through passage is provided, which includes two intermediate frames, two folding shed assemblies respectively arranged on opposite sides of the two intermediate frames, and two pedal assemblies according to the above.
[0015] According to another aspect of the present application, a rail vehicle is provided, which comprises the pedal assembly or the through passage according to the above.
[0016] According to an example of the present application, the vehicle body comprises an upper bottom plate and a lower bottom plate arranged in a spaced manner in the up-down direction, the first end of the upper pedal of the pedal assembly is connected to the upper bottom plate, and the lower pedal assembly of the pedal assembly is connected to the lower bottom plate through a second connecting assembly.
[0017] The first mounting frame of the lower pedal assembly of the pedal assembly of the present application is connected to the intermediate frame through the first connecting assembly, a plurality of rollers are arranged on the second mounting frame, a plurality of wear plates are arranged on the upper surface of the vehicle body, the second mounting frame can swing up and down relative to the first mounting frame without constraint, so as to adapt to the relative pitching movement between the front and rear vehicle bodies. The two adjacent vehicle bodies can be adapted to different running curves of the rail vehicle, and the structure of the lower pedal assembly enables the drawer space between the upper bottom plate and the lower bottom plate to be pulled in or pulled out, so that the two adjacent vehicle bodies can be adapted to different running curves of the rail vehicle, and the pedal space of the vehicle under different curve conditions is covered, avoiding passenger falling into the pedal area. Further, by arranging only one guide assembly at the substantially central part of the second mounting frame, compared with the guide structure of arranging a plurality of guide rails and a plurality of rollers, the movement of the second mounting frame can be guided by a simple guide structure. Further, the lower pedal assembly is configured in a parallelogram structure, so that the edge of the lower pedal assembly does not have protruding edges or sharp corners when the vehicle passes through the curve, and the awning cloth and the windshield frame are not scratched or damaged. In addition, the first mounting frame is connected to the intermediate frame through the cooperation between the connecting sleeve and the connecting column, so that the first mounting frame can have a certain activity margin relative to the intermediate frame. BRIEF DESCRIPTION OF DRAWINGS
[0018] The features and advantages of the present application will be clearly understood through the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are only schematic and are not necessarily drawn to scale, and therefore should not be considered as limiting the present application, in which:
[0019] Figure 1 A partial perspective view of a rail vehicle according to an embodiment of the present application is shown.
[0020] Figure 2 A partial perspective view of a rail vehicle according to an embodiment of the present application is shown. Figure 1 An exploded view of the rail vehicle shown.
[0021] Figure 3 A partial perspective view of a rail vehicle according to an embodiment of the present application is shown. Figure 1 A front view of the rail vehicle shown.
[0022] Figure 4 shown along the line A-A. Figure 3
[0023] Figure 5 shown along the line A-A. Figure 4
[0024] Figure 6 Figure 3
[0025] Figure 7 Figure 6
[0026] Figure 8 Figure 1
[0027] BRIEF DESCRIPTION OF DRAWINGS
[0028] 100, car body; 200, folding roof assembly; 300, intermediate frame; 400, step assembly; 1, lower step assembly; 11, first mounting bracket; 12, second mounting bracket; 13, movable profile; 14, fixed profile; 15, first positioning pin; 16, second positioning pin; 2, first connecting assembly; 21, connecting bracket; 22, first support plate; 23, second support plate; 24, connecting sleeve; 25, connecting column; 3, second connecting assembly; 31, roller; 32, wear plate; 33, guide assembly; 331, guide rib; 332, guide wheel; 3321, limiting shaft; 3322, wheel body; 4, upper step; 5, upper bottom plate; 6, lower bottom plate. DETAILED DESCRIPTION
[0029] Embodiments of the present application are described herein below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art, that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present application. In addition, it is to be understood that the present application is not limited in its application to the particular details of construction and the arrangement of components set forth in the following description. The present application is capable of other embodiments and of being practiced or being carried out in various ways. Accordingly, the following features, embodiments, and advantages are merely illustrative and are not to be construed as limiting the scope of the application, unless described in the claims.
[0030] It should be noted that in the description herein, unless otherwise explicitly specified and limited, the terms "connected", "connected to" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be lapped; can be directly connected, or indirectly connected through an intermediate piece. For those of ordinary skill in the art, the specific meaning of the above terms in this article should be understood according to the specific circumstances.
[0031] In the following, terms such as "first", "second" are used to describe the elements of the present application, which are only used to distinguish the elements, and are not used to limit the nature, order or number of the elements. The terms "include" and "have" are used to mean open inclusion, and refer to the presence of additional elements / components in addition to the listed elements / components.
[0032] Figures 1 to 3 Partially shows a rail vehicle according to an embodiment of the present application. As Figures 1 to 3 shown, the rail vehicle according to the embodiment can include a car body 100, a folding shed assembly 200, an intermediate frame 300 (also referred to as a hinged frame in the field), and a step assembly 400. The folding shed assembly 200 is fixed to the end wall of the car body 100 via a connecting frame (not shown). The intermediate frame 300 is connected to the side of the folding shed assembly 200 away from the car body 100. One side of the step assembly 400 is connected to the intermediate frame 300, and the other side is connected to the end wall of the car body 100, so that the step assembly 400 can cover over the bottom of the folding shed assembly 200. The folding shed assembly 200 and the intermediate frame 300 are also connected on another car body adjacent to the car body 100 in the figure. By the two intermediate frames 300 opposite to each other between the two adjacent car bodies 100 and detachably fixed by connecting members, the coupling and uncoupling of adjacent carriages of the rail vehicle are realized.
[0033] As Figure 2 shown, the step assembly 400 according to the embodiment can include a lower step assembly 1, a first connecting assembly 2, a second connecting assembly 3, and an upper step 4. The lower step assembly 1 can include a first mounting bracket 11 and a second mounting bracket 12 arranged opposite and parallel to each other, the first mounting bracket 11 being connected to the intermediate frame 300 through the first connecting assembly 2, and the second mounting bracket 12 being connected to the car body 100 through the second connecting assembly 3 and being capable of moving relative to the first mounting bracket 11, thereby adapting to the relative movement between the two adjacent car bodies 100 in the forward and rear directions of the rail vehicle.
[0034] Figures 4 to 7 Specific examples of the first connecting assembly 2 and the second connecting assembly 3 according to the embodiment are shown. As Figure 2 , Figure 4 and Figure 5As shown, the first connecting assembly 2 according to the present embodiment can include a connecting bracket 21, a first support plate 22 and a second support plate 23. The connecting bracket 21 can include a horizontal section and a vertical section extending along horizontal and vertical directions respectively, wherein the vertical section is fixed to a side of the intermediate frame 300 facing away from the awning assembly 200 and extends upwardly from the intermediate frame 300, and the horizontal section extends from the top of the vertical section toward the awning assembly 200, thereby constituting a support surface opposite to the first mounting bracket 11. The first support plate 22 is connected to this support surface of the connecting bracket 21, and the second support plate 23 is connected to the first mounting bracket 11 and can abut against the first support plate 22. Thus, one side of the lower deck assembly 1 can be supported on the intermediate frame 300 via the connecting bracket 21 via abutment of the first support plate 22 and the second support plate 23 against each other. The first support plate 22 and the second support plate 23 can be made of wear-resistant material.
[0035] The first connecting assembly 2 can further include a connecting sleeve 24 and a connecting column 25, as shown in Figure 2 、 Figure 4 and Figure 5 . The limiting structure constituted by the connecting sleeve 24 and the connecting column 25 can be one or two arranged side by side. The connecting sleeve 24 is mounted to the intermediate frame 300, and the connecting bracket 21 is provided with a through hole for the connecting sleeve 24 to pass through. The connecting column 25 is connected to the first mounting bracket 11 and is inserted into the connecting sleeve 24, and the outer diameter of the connecting column 25 is smaller than the inner diameter of the connecting sleeve 24. Thus, the movement range of the first mounting bracket 11 relative to the intermediate frame 300 can be limited by the inner diameter of the connecting sleeve 24. The connecting column 25 is preferably configured in a ball head shape. Of course, in other embodiments, the connecting sleeve 24 can also be arranged on the first mounting bracket 11 and pass through the through hole on the horizontal section of the connecting bracket 21, and the corresponding connecting column 25 can be arranged on the intermediate frame.
[0036] As shown in Figure 2 、 Figure 6 and Figure 7 , the second connecting assembly 3 according to the present embodiment can include a plurality of rollers 31 and a plurality of wear-resistant plates 32. The plurality of rollers 31 are arranged in intervals along the extension direction of the second mounting bracket 12 (the lateral direction of the vehicle), and the plurality of wear-resistant plates 32 are arranged in intervals on the upper surface of the vehicle body 100 and can correspond to the plurality of rollers 31 one by one, so as to abut against the corresponding rollers 31. The covering surface of the wear-resistant plate 32 is larger than the contact surface of the roller 31, and the roller 31 can always roll on the corresponding wear-resistant plate 32 when the second mounting bracket 12 swings laterally relative to the first mounting bracket 11.
[0037] Optionally, the second connecting assembly 3 can further include only one guide assembly 33, as shown in Figure 2The guiding assembly 33 is preferably arranged at the corresponding position of the middle of the second mounting frame 12. For example, the number of the rollers 31 and the wear plates 32 shown in the embodiment is four, and the guiding assembly 33 can be arranged between every two rollers 31 and wear plates 32.
[0038] Specifically, referring to Figure 6 and Figure 7 , the guiding assembly 33 can include two guiding ribs 331 and one guiding wheel 332. Each guiding rib 331 extends along the longitudinal direction of the vehicle (i.e. the traveling direction of the rail vehicle), and includes a horizontal section and a vertical section. The horizontal section of each guiding rib 331 is fitted to the upper surface of the vehicle body 100 and is fixed via fasteners. The vertical section of each guiding rib 331 extends perpendicularly to the upper surface of the vehicle body 100 and towards the second mounting frame 12, and the vertical sections of the two guiding ribs 331 are spaced apart by a distance which can be appropriately greater than the diameter of the guiding wheel 332. In other embodiments, the two guiding ribs 331 can also be fixed to the second mounting frame 12, and the guiding wheel 332 is correspondingly connected to the upper surface of the vehicle body 100.
[0039] Referring to Figure 7 , the guiding wheel 332 can include a limiting shaft 3321 and a wheel body 3322. The limiting shaft 3321 is fixed to the second mounting frame 12 and extends perpendicularly between the vertical sections of the two guiding ribs 331 towards the upper surface of the vehicle body 100. The wheel body 3322 is sleeved onto the limiting shaft 3321 and is arranged between the vertical sections of the two guiding ribs 331 via the limiting shaft 3321. The range of lateral movement of the second mounting frame 12 relative to the first mounting frame 11 can be defined by the distance between the vertical sections of the two guiding ribs 331, to guide the movement of the lower deck assembly 1.
[0040] Figure 8 The internal schematic view of the lower deck assembly 1 according to the embodiment is shown partially. As Figure 2 and Figure 8 shown, the lower deck assembly 1 includes a tread and first and second mounting frames 11, 12 arranged opposite and parallel to each other to form two opposite first and second cross beams. The first mounting frame 11, the first cross beam, the second mounting frame 12 and the second cross beam are sequentially and end-to-end hingedly connected to form a deformable parallelogram frame. The tread is arranged in the middle of the frame and can include a plurality of movable profiles 13 and a plurality of fixed profiles 14 arranged alternately with each other. The structure of the lower deck assembly 1 configured as a parallelogram makes the edge of the lower deck assembly 1 free of protruding edges or sharp corners when the vehicle passes through curves, and does not scratch or damage the tarpaulin and windshield frame.
[0041] The first mounting bracket 11 and the second mounting bracket 12 are made of stainless steel bent into a roughly C-shaped groove, in which positioning pins 15 and 16 can be inserted at equal intervals.
[0042] like Figure 8 As shown, each movable profile 13 can be, for example, a long strip structure made of aluminum with a cross-section approximately "I"-shaped, such that each movable profile 13 has receiving portions on both sides in its width direction. One end of each movable profile 13 along its length direction is mounted to the first mounting bracket 11 via a first positioning pin 15, and the other end is mounted to the second mounting bracket 12 via a first positioning pin 15, such that each movable profile 13 can rotate about the first positioning pin 15.
[0043] Each fixed profile 14 can be, for example, a long strip structure made of nylon with a roughly I-shaped cross-section. A portion of each fixed profile 14's width can be received within the receiving portions of two adjacent movable profiles 13. One end of each fixed profile 14 along its length is mounted to the first mounting bracket 11 via a second locating pin 16, and the other end is mounted to the second mounting bracket 12 via the same pin, allowing each fixed profile 14 to rotate around the second locating pin 16. The fixed profiles 14 and movable profiles 13 are staggered in height to meet the requirements for vehicles traversing curved sections. A certain gap also exists between the fixed profiles 14 and movable profiles 13, allowing the lower pedal assembly 1 to move within a certain range in the transverse direction of the rail vehicle's travel.
[0044] In the above embodiments, such as Figure 1 , 2 As shown in Figure 7, the upper step 4 includes a first end and a second end along the direction of travel of the rail vehicle, and the first end of the upper step 4 is connected to the car body 100. Specifically, the bottom of the car body 100 includes an upper bottom plate 5 and a lower bottom plate 6 arranged at intervals in the vertical direction, as shown in Figure 7. Figure 7 As shown, the second mounting bracket 12 can be supported on the upper surface of the lower base plate 6 of the vehicle body 100 via a plurality of wear-resistant plates 32 in the second connecting assembly 3, and the first end of the upper pedal 4 is connected to the upper base plate 5 of the vehicle body 100. The second end of the upper pedal 4, opposite to the first end, is supported on the top surface of the tread of the lower pedal assembly 1.
[0045] As described above, the first mounting frame 11 of the pedal assembly 400 according to the present application is connected to the intermediate frame 300 through the first connecting assembly 2, and a plurality of rollers 31 are arranged on the second mounting frame 12. The upper surface of the car body 100 is arranged with a plurality of wear plates 32, and the rollers 31 roll on the corresponding wear plates 32, so that the second mounting frame 12 can swing up and down relative to the first mounting frame 11 without constraint, so as to adapt to the relative pitching movement between the front and rear car bodies, so as to adapt two adjacent car bodies 100 to different running curves of the rail vehicle.
[0046] For the second mounting frame 12, by arranging only one guide assembly 33 at the substantially central position, the movement of the second mounting frame 12 can be guided with a simple guide structure.
[0047] And, the first mounting frame 11 can have a certain range of movement through the cooperation between the connecting sleeve 24 and the connecting column 25. The second mounting frame 12 can swing laterally relative to the first mounting frame 11 within a certain range and can be guided to move along the running direction of the rail vehicle through the cooperation between the two guide ribs 331 and the guide wheels 332.
[0048] Various modifications and variations to the disclosed embodiments of the present application can be made without departing from the scope or spirit of the application. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The specification and examples given are intended as illustrative only and are not intended to limit the true scope of the present application, which is to be set forth in the claims and their equivalents.
Claims
1. A pedal assembly for a rail vehicle, the rail vehicle comprising a vehicle body (100), a folding shed assembly (200) and an intermediate frame (300) connected in sequence, characterized in that, the pedal assembly (400) comprises a lower pedal assembly (1), a first connecting assembly (2) and a second connecting assembly (3), the lower pedal assembly (1) is arranged above the bottom of the folding shed assembly (200) and comprises a first mounting bracket (11) and a second mounting bracket (12) arranged opposite and parallel to each other, the second mounting bracket being able to swing transversely relative to the first mounting bracket, the first mounting bracket (11) is connected to the intermediate frame (300) through the first connecting assembly (2), and the second mounting bracket (12) is connected to the vehicle body (100) through the second connecting assembly (3), wherein the second connecting assembly (3) comprises a plurality of rollers (31) arranged on the second mounting bracket (12) at intervals and a plurality of wear plates (32) arranged on the upper surface of the vehicle body (100) at intervals and abutting against the corresponding rollers.
2. The pedal assembly of claim 1, wherein, The second connecting assembly (3) further comprises only one guide assembly (33).
3. The pedal assembly of claim 2, wherein, The guide assembly (33) comprises two guide ribs (331) extending along the longitudinal direction of the vehicle respectively and a guide wheel (332) arranged between the two guide ribs, the two guide ribs (331) being fixed to one of the vehicle body (100) and the second mounting bracket (12) and spaced apart from each other by a distance, and the guide wheel (332) being fixed to the other one of the vehicle body (100) and the second mounting bracket (12) and being able to abut against one of the two guide ribs (331).
4. The pedal assembly of claim 3, wherein, The guide ribs (331) are fixed to the vehicle body (100) and extend vertically at least partially towards the second mounting bracket (12), and the guide wheel (332) comprises a limiting shaft (3321) fixed to the second mounting bracket (12) and extending vertically between the two guide ribs towards the vehicle body, and a wheel body (3322) sleeved onto the limiting shaft.
5. The pedal assembly of claim 1, wherein, The first connecting assembly (2) comprises a connecting bracket (21) connected to the intermediate frame (300), and a first support plate (22) and a second support plate (23) abutting against each other, the first support plate being connected to the connecting bracket (21), and the second support plate being connected to the first mounting bracket (11).
6. The pedal assembly of claim 5, wherein, The first connecting assembly (2) further comprises a connecting sleeve (24) and a connecting column (25), the connecting sleeve being connected to one of the intermediate frame (300) and the first mounting bracket (11), and the connecting column being connected to the other one of the intermediate frame (300) and the first mounting bracket (11) and being inserted into the connecting sleeve (24), the inner diameter of the connecting sleeve being greater than the outer diameter of the connecting column.
7. The pedal assembly of claim 6, wherein, The connecting column (25) is configured in a ball head shape.
8. The pedal assembly of any one of claims 1-7, wherein, The lower pedal assembly (1) further comprises a plurality of movable profiles (13) and a plurality of fixed profiles (14) arranged alternately with each other, each movable profile is installed between the first mounting frame (11) and the second mounting frame (12) via a first positioning pin (15) and is provided with a receiving portion on the side, and each fixed profile is installed between the first mounting frame (11) and the second mounting frame (12) via a second positioning pin (16) and a side portion thereof is partially received in the receiving portion of the adjacent movable profile.
9. The pedal assembly of any one of claims 1-7, wherein, The pedal assembly (400) further comprises an upper pedal (4), a first end of the upper pedal is connected to the vehicle body (100) and is arranged above the lower pedal assembly (1), and a second end of the upper pedal opposite to the first end abuts against a top surface of the lower pedal assembly.
10. A through passage, characterized by The through passage comprises two intermediate frames (300), two folding shed assemblies (200) arranged on opposite sides of the two intermediate frames (300) respectively, and two pedal assemblies (400) according to any one of claims 1 to 9.
11. A rail vehicle, characterized by A pedal assembly (400) according to any one of claims 1 to 9 or a through passage according to claim 10.
12. Railway vehicle according to claim 11, characterized in that The vehicle body (100) comprises an upper bottom plate (5) and a lower bottom plate (6) arranged in a vertical direction, a first end of an upper pedal (4) of the pedal assembly is connected to the upper bottom plate, and a lower pedal assembly of the pedal assembly is connected to the lower bottom plate via a second connecting assembly (3).