Pedestal device for a through passage of a rail vehicle and through passage

Abstract

This utility model relates to a pedal device for a passageway in a rail vehicle and a passageway including the pedal device. The pedal device includes a first pedal, a second pedal, and a third pedal, as well as a linkage mechanism. The second pedal and the third pedal are respectively arranged at both ends of the first pedal in a first direction; the linkage mechanism is connected to the first pedal and extends along the first direction across the second pedal and the third pedal, and the linkage mechanism includes multiple first links and multiple second links; wherein the multiple first links and the multiple second links are constructed as an integral piece made of a first profile and a second profile, respectively. The pedal device of this utility model saves materials and avoids the complex forming processes and welding time required by existing linkage mechanisms, allowing for flexible adjustment of the linkage mechanism's dimensions. Therefore, this pedal device can be adapted to various models and types of passageways.

Description

Technical Field

[0001] This utility model relates to the technical field of through passages for rail vehicles, and in particular to a pedal device for through passages for rail vehicles, and a through passage including the pedal device. Background Technology

[0002] Some vehicles (such as railcars) have two or more cars. A passageway, as an important component connecting the cars, is installed at the junction of the end walls of adjacent cars, serving as a connection and transition, providing passengers with a safe and comfortable passage space. The passageway's step system typically includes two steps, each hinged to the end walls of the two adjacent cars, allowing them to rotate relative to their respective end walls. These two steps are connected by a retractable linkage mechanism, moving closer or further apart to accommodate the turning radius between adjacent cars.

[0003] Existing linkage mechanisms are typically manufactured using welding or casting. In welded designs, short linkages typically include a central rectangular tube and end castings at both ends, while long linkages include a central cast connector and rectangular tubes and end castings sequentially positioned on either side of the cast connector. This necessitates welding these components. To ensure the accuracy of the hole positions between the linkage connection holes, precision machining of the connection holes is required after welding. This process involves numerous steps and consumes considerable time. When using integral casting, the linkage dimensions lack flexibility; each size requires casting, and the one-time cost of the mold and lower production efficiency contribute to higher overall costs. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the above-mentioned problems and / or other problems existing in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a pedal device is provided, the pedal device including a first pedal, a second pedal, and a third pedal, and a linkage mechanism. The second pedal and the third pedal are respectively arranged at both ends of the first pedal in a first direction; the linkage mechanism is connected to the first pedal and extends along the first direction across the second pedal and the third pedal, the linkage mechanism including a plurality of first links and a plurality of second links; wherein the plurality of first links and the plurality of second links are constructed as an integral piece made of a first profile and a second profile, respectively.

[0006] According to one example of the present invention, the plurality of first links include a first long link with a first through hole in the middle, and the plurality of second links include a second long link that passes through the first through hole and is pivotally connected to the first long link.

[0007] According to an example of the present invention, the plurality of first connecting rods further include two first short connecting rods respectively disposed on both sides of the first long connecting rod, and the plurality of second connecting rods further include two second short connecting rods respectively disposed on both sides of the second long connecting rod. The first long connecting rod has a first groove at each end, and the first short connecting rod has a second groove at each end. The two ends of the second long connecting rod pass through one of the second grooves of the two first short connecting rods and are connected to the corresponding first short connecting rod. One end of each second short connecting rod passes through the corresponding first groove and is connected to the first long connecting rod, and the other end of each second short connecting rod passes through the second groove and is connected to the first short connecting rod.

[0008] According to one embodiment of the present invention, a first mounting portion for mounting to the first pedal is formed at the connection between the second long connecting rod and the first long connecting rod.

[0009] According to one example of the present invention, a second mounting portion is formed at the connection between one second short link and the first short link, and a third mounting portion is formed at the connection between another second short link and another first short link.

[0010] According to one embodiment of the present invention, at least one of the first short connecting rod and the second short connecting rod corresponding to the second mounting portion is provided with a first support portion for supporting the second pedal, and / or, at least one of the first short connecting rod and the second short connecting rod corresponding to the third mounting portion is provided with a second support portion for supporting the third pedal.

[0011] According to one example of the present invention, a wear-resistant portion is sandwiched between the top of the first support portion and the second support portion and the corresponding pedal.

[0012] According to one example of the present invention, the first profile includes two first transverse sections arranged parallel to each other and a first longitudinal section extending between the two first transverse sections, and the second profile includes two second transverse sections arranged parallel to each other and a second longitudinal section extending between the two second transverse sections, the height of the second profile defined by the two second transverse sections being configured to pass through the first through hole formed in the first profile.

[0013] According to one example of the present invention, the pedal device includes two linkage mechanisms arranged in a second direction transverse to the first direction and extending from the second pedal to the third pedal, respectively.

[0014] According to one example of the present invention, the pedal device further includes a mounting block and a first connector mounted on the first pedal. The mounting block is provided with a first threaded hole, and the first connector passes through one of the linkage mechanisms and is threadedly connected to the mounting block in the first threaded hole.

[0015] According to one example of the present invention, the pedal device further includes a guide member mounted on the first pedal, a slider slidably connected to the guide member, and a second connecting member. The guide member is arranged along a second direction, the slider is provided with a second threaded hole, and the second connecting member passes through another of the linkage mechanisms and is threadedly connected to the slider in the second threaded hole.

[0016] According to one example of the present invention, the pedal device further includes a first bracket and a first fastener, the first fastener passing through each of the linkage mechanisms to rotatably connect each of the linkage mechanisms to the first bracket.

[0017] According to one example of the present invention, the pedal device further includes a second bracket and a second fastener, the second fastener passing through each of the linkage mechanisms and rotatably connecting each of the linkage mechanisms to the second bracket.

[0018] According to another aspect of the present invention, a through passage is provided, the through passage including a pedal device as described above.

[0019] This utility model's pedal device constructs the first connecting rod as a single piece made of a first profile and the second connecting rod as a single piece made of a second profile. This simplifies the manufacturing process of the linkage mechanism by requiring only an extrusion process to form the first and second profiles with different cross-sections. This greatly simplifies the manufacturing process of the linkage mechanism, avoiding the complex forming processes and welding time required in existing linkage mechanisms. Furthermore, the lengths of the first and second profiles can be cut to match the lengths of the first and second connecting rods as needed. This allows for flexible adjustment of the dimensions of the first and second connecting rods, making the pedal device adaptable to various models and types of passageways. Attached Figure Description

[0020] The features and advantages of this utility model will become clear from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limitations on this utility model, wherein:

[0021] Figure 1 A perspective view of a pedal device according to an exemplary embodiment of the present invention is shown.

[0022] Figure 2 Show Figure 1 An exploded view of the pedal assembly shown.

[0023] Figure 3 Show Figure 1 A top view of the pedal assembly shown.

[0024] Figure 4 Show Figure 3 A cross-sectional view of the pedal device shown at point A along line CC.

[0025] Figure 5 Show Figure 3 A cross-sectional view of the pedal device shown at point B along line CC.

[0026] Figure 6 Show Figure 1 A perspective view of the linkage mechanism of the pedal device shown.

[0027] Figure 7 Show Figure 6 The exploded view of the linkage mechanism shown.

[0028] Figure 8 The first profile is shown being made into Figure 6 The diagram shows the first long link and the first short link of the linkage mechanism.

[0029] Figure 9 The second profile is shown being made Figure 6 The diagram shows the second long link and the second short link of the linkage mechanism.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. First pedal; 2. Second pedal; 3. Third pedal; 4. Linkage mechanism; 41. First connecting rod; 411. First long connecting rod; 4111. First through hole; 4112. First groove; 412. First short connecting rod; 4121. Second groove; 42. Second connecting rod; 421. Second long connecting rod; 422. Second short connecting rod; 43. First mounting part; 44. Second mounting part; 45. Third mounting part; 46. First support part; 47. Second support part; 48. Wear-resistant part; 5. First profile; 51. First transverse section; 52. First longitudinal section; 53. Profile hole; 6. Second profile; 61. Second transverse section; 62. Second longitudinal section; 71. Mounting block; 711. First threaded hole; 72. First connector; 91. First bracket; 81. Guide; 82. Slider; 821. Second threaded hole; 83. Second connector; 92. First fastener; 93. Second bracket; 94. Second fastener. Detailed Implementation

[0032] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention can be conceived to be implemented with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the features, embodiments, and advantages described below are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0033] The terms "first" and "second" are used below to describe the elements of this application. These terms are used only to distinguish the individual elements and not to limit the nature, order, or number of these elements. The terms "comprising" and "having" are used to indicate an open-ended inclusion and mean that there may be additional elements / components besides those listed.

[0034] Figure 1-3 A tread plate device for a passageway in a rail vehicle, according to one embodiment of the present invention, is shown. Figures 1 to 3 As shown, the pedal device according to this embodiment may include a first pedal 1, a second pedal 2, a third pedal 3, and a linkage mechanism 4. The pedal device is located at the lower part of the passageway. The first pedal 1 is arranged in the middle, such that the width of the first pedal 1 extends along a first direction L (that is, the forward and backward direction of the rail vehicle), and the length extends in a second direction K (that is, the left and right direction transverse to the direction of the rail vehicle's travel), which is perpendicular to the first direction. The second pedal 2 and the third pedal 3 are respectively arranged at the front and rear ends of the first pedal 1 in the first direction L, such that the second pedal 2 and the third pedal 3 are offset from the first pedal 1 in a third direction (that is, the up and down direction) perpendicular to the first direction L and the second direction K, and can be positioned lower than the first pedal 1.

[0035] The middle portion of the linkage mechanism 4 is connected to the first pedal 1, extends in the first direction L across the second pedal 2 and connects to it, and extends across the third pedal 3 and connects to it. The linkage mechanism 4 may include multiple first links 41 and multiple second links 42. The multiple first links 41 are arranged at intervals from each other, the multiple second links 42 are arranged at intervals from each other, and the multiple first links 41 and multiple second links 42 are arranged alternately to form two rhomboid, side-by-side telescopic structures, so that the second pedal 2 and the third pedal 3 are moved away from or closer to each other to adapt to the motion requirements of the rail vehicle under different operating conditions.

[0036] In this embodiment, the first link 41 can be a single piece made of the first profile 5, and the second link 42 can be a single piece made of the second profile 6, which is different from the first profile 5. According to this embodiment, the multiple first links 41 of the linkage mechanism 4 are all high links, allowing the second link 42, i.e., the low link, to pass through and connect with it through a through-hole in the middle or a slot at the end (this will be described in detail below). The first profile 5 and the second profile 6 can both be metallic materials (e.g., aluminum, magnesium, copper, etc.) extruded in different molds using an extrusion process to form strips with different specific cross-sectional shapes. By using the different cross-sectional shapes of the first profile 5 and the second profile 6, a hole or slot for the other to pass through can be machined onto one of the manufactured first links 41 and the second link 42.

[0037] Figure 6 and Figure 7 The specific structure of a linkage mechanism 4 according to an embodiment of the present invention is shown. A plurality of first links 41 include a first long link 411, the first long link 411 having a first through hole 4111 in the middle. A plurality of second links 42 of the linkage mechanism 4 may include a second long link 421, the second long link 421 passing through the first through hole 4111 in the middle of the first long link 411, and pivotally connected to the first long link 411 at the first through hole 4111. Thus, the second long link 421 is arranged intersecting with the first long link 411 as it passes through it, and the width and length of the middle portion of the linkage mechanism are increased or decreased by the proximity or distance between the first long link 411 and the second long link 421.

[0038] Continue to refer to Figure 6 and Figure 7 As shown, the plurality of first links 41 according to this embodiment may further include two first short links 412. The two first short links 412 are respectively disposed on both sides of the first long link 411. The plurality of second links 42 according to this embodiment may further include two second short links 422. The two second short links 422 are respectively disposed on both sides of the second long link 421.

[0039] The first long connecting rod 411 has a first groove 4112 at both ends, and the first short connecting rod 412 has a second groove 4121 at both ends. One end of the second long connecting rod 421 ( Figure 6 The left end of the middle) passes through the first short link 412 closest to it ( Figure 6 One of the second grooves 4121 on the left side of the middle section, and pivotally connected to the first short connecting rod 412 within the second groove 4121. The other end of the second long connecting rod 421 ( Figure 6 The right end of the middle) passes through the first short link 412 closest to it ( Figure 6The first short link 4122 is located in one of the second slots 4121 on the right side of the first short link 412, and is pivotally connected to the first short link 412 within the second slot 4121. One end of each second short link 422 passes through the other second slot 4121 of the corresponding first short link 412, and is pivotally connected to the first short link 412 within the second slot 4121. The other end of each second short link 422 passes through the first slot 4112 of the first long link 411, and is pivotally connected to the first long link 411 within the first slot 4112. The pivotal connection of the first short link 412 and the second short link 422 can be close to or far away from the pivotal connection of the first long link 411 and the second long link 421 in the first direction L.

[0040] refer to Figure 6 and Figure 7 As shown, the linkage mechanism 4 according to this embodiment may further include a first mounting portion 43. The first mounting portion 43 is formed at the connection between the first long link 411 and the second long link 421, and is used to connect the linkage mechanism 4 to the first pedal 1.

[0041] Optionally, the linkage mechanism 4 according to this embodiment may further include a second mounting portion 44. The second mounting portion 44 is formed in one of the second short links 422 ( Figure 6 The connection point between the link mechanism 4 (shown on the right) and the corresponding first short link 412 is used to connect the link mechanism 4 to one of the second pedal 2 and the third pedal 3. Accordingly, the link mechanism 4 according to this embodiment may also include a third mounting portion 45. The third mounting portion 45 is formed on another second short link 422 (shown on the right) and the corresponding first short link 412. Figure 6 The connection point between the linkage mechanism 4 (shown on the left) and the corresponding first short link 412 is used to connect the linkage mechanism 4 to the other of the second pedal 2 and the third pedal 3. Furthermore, when the pedal assembly is connected to two adjacent carriages, the linkage mechanism 4 can be connected to the end wall of one carriage via the second mounting portion 44 and to the end wall of the other carriage via the third mounting portion 45. In the following description, an embodiment with the second mounting portion 44 connected to the second pedal 2 and the third mounting portion 45 connected to the third pedal 3 will be specifically described.

[0042] Continue to refer to Figure 6 and Figure 7 As shown, the linkage mechanism 4 according to this embodiment may further include a first support portion 46 and a second support portion 47. The two first support portions 46 may be respectively disposed on the first short link 412 and the second short link 422 corresponding to the second mounting portion 44, forming two support points for the second pedal 2. The two second support portions 47 may be respectively disposed on the first short link 412 and the second short link 422 corresponding to the third mounting portion 45, forming two support points for the third pedal 3.

[0043] To prevent wear during relative movement between the first support 46 and the second pedal 2, and between the second support 47 and the third pedal 3, the linkage mechanism 4 may further include multiple wear-resistant parts 48. The wear-resistant parts 48 are disposed on the first support 46 and located between the first support 46 and the second pedal 2, or disposed on the second support 47 and located between the second support 47 and the third pedal 3.

[0044] In this embodiment, the first long connecting rod 411 and the first short connecting rod 412 can be made of the first profile 5, such as... Figure 8 As shown. The first profile 5 may include two first transverse sections 51 arranged parallel to each other, and a first longitudinal section 52 extending from one of the first transverse sections 51 to the other first transverse section 51. The inner height between the two first transverse sections 51 (that is, the distance between the opposite surfaces of the two first transverse sections 51, which is equivalent to the height of the first longitudinal section 52) is H1. The first long connecting rod 411 can be cut to a corresponding length along sections D1 and D2 to form a semi-finished product, and then a first through hole 4111 and a first groove 4112 are formed on the semi-finished product by punching or drilling, thereby forming the first long connecting rod 411. Similarly, the second short connecting rod 412 can be cut to a corresponding length along sections D1 and D3 to form a semi-finished product, and then a second groove 4121 is formed on the semi-finished product by punching or drilling, thereby forming the first short connecting rod 412.

[0045] The second long connecting rod 421 and the second short connecting rod 422 can be made of the second profile 6, such as Figure 9 As shown. The second profile 6 may include two second transverse sections 61 arranged parallel to each other, and a second longitudinal section 62 extending from one of the second transverse sections 61 to the other. The outer height between the two second transverse sections 61 (that is, the distance between the opposite surfaces of the two second transverse sections 62) is H2. The inner height H1 between the two first transverse sections 51 is greater than or equal to the outer height H2 between the two second transverse sections 61, thereby allowing the second long connecting rod 421 and the second short connecting rod 422 made of the second profile 6 to pass through the first through hole 4111 and the first groove 4112 provided on the first long connecting rod 411, respectively. The first short connecting rod 412 corresponds to the second groove 4121 provided on the first longitudinal section 52, allowing the second long connecting rod 421 and the second short connecting rod 422 made of the second profile 6 to pass through. The second long link 421 can be made by cutting the corresponding length along section E1 and section E2 using a tool, and the second short link 422 can be made by cutting the corresponding length along section E1 and section E3 using a tool.

[0046] In this embodiment, the pedal device may include two linkage mechanisms 4, such as... Figure 1 and Figure 2As shown. Two linkage mechanisms 4 are arranged along a second direction K that is transverse to the first direction L, and extend from the side of the second pedal 2 away from the first pedal 1 to the side of the third pedal 3 away from the first pedal 1.

[0047] Figure 4 and Figure 5 It shows Figure 3 Enlarged views of points A and B, cut along line CC. Figure 4 In this embodiment, the first mounting portion 43 exemplarily includes a first hole and a second hole on the top and bottom walls of the first long connecting rod 411, corresponding to the first through hole 4111, and a third hole on the second long connecting rod 421. The pedal device according to this embodiment may further include a mounting block 71 and a first connecting member 72. The mounting block 71 is provided with a first threaded hole 711. The first connecting member 72 passes from bottom to top through the second hole, the third hole, and the first hole of the first mounting portion 43 of one of the linkage mechanisms 4, and is then threadedly connected to the mounting block 71 within the first threaded hole 711. This linkage mechanism 4 can then be connected to the first pedal 2.

[0048] exist Figure 5 In this embodiment, the pedal device may further include a guide 81, a slider 82, and a second connecting member 83. The guide 81 is mounted on the first pedal 2 and arranged along a second direction K. The slider 82 is slidably connected to the guide 81 and has a second threaded hole 821. The second connecting member 83 passes from bottom to top through the second hole, third hole, and first hole of the first mounting portion 43 of another linkage mechanism 4, and is threadedly connected to the slider 82 within the second threaded hole 821. This allows the linkage mechanism 4 to be slidably connected to the first pedal 2. Figure 3 The pedal device in the middle is connected between two adjacent carriages. When the rail vehicle turns, one end of the first pedal 1 deflects toward the second pedal 2 or the third pedal 3, thereby causing the first mounting part 43 of the two linkage mechanisms 4 to move closer or further away from each other to adapt to the turning angle of the rail vehicle.

[0049] refer to Figure 2 , Figure 6 and Figure 7As shown, the second mounting portion 44 exemplarily includes a fourth and a fifth hole on the top and bottom walls of the first short link 412 corresponding to the first groove 4112, and a sixth hole on the second short link 422. The pedal device of this embodiment may further include a first bracket 91 and a first fastener 92. The first bracket 91 may include a first segment and a second segment opposite to each other, and a first connecting segment connecting the first segment and the second segment. The first segment and the second segment are respectively provided with a first mounting hole and a second mounting hole. The first connecting segment is used to connect the first bracket 91 to the vehicle body end wall. The first fastener 92 passes through the first mounting hole of the first bracket 91, the fourth hole of the first short link 412, the sixth hole of the second short link 422, the fifth hole of the first short link 412, and the second mounting hole of the first bracket 91 in a third direction perpendicular to the first direction L and the second direction K of each linkage mechanism 4. This allows the first short link 412 and the second short link 422 to be rotatably connected to the first bracket 91 and mounted to the vehicle body end wall via the first bracket 91.

[0050] Similarly, the third mounting portion 45 exemplarily includes a seventh hole and an eighth hole on the top and bottom walls of the first short link 412 corresponding to the first groove portion 4112, and a ninth hole on the second short link 422. The pedal device of this embodiment may also include a second bracket 93 and a second fastener 94. The second bracket 92 may include a third segment and a fourth segment opposite to each other, and a second connecting segment connecting the third segment and the fourth segment. The third segment and the fourth segment are respectively provided with a third mounting hole and a fourth mounting hole, and the second connecting segment is used to connect the second bracket 92 to the vehicle body end wall. The second fastener 94 passes through the third mounting hole of the second bracket 94, the seventh hole of the first short link 412, the ninth hole of the second short link 422, the eighth hole of the first short link 412, and the fourth mounting hole of the second bracket 93 in a third direction perpendicular to the first direction L and the second direction K. Thus, the first short link 412 and the second short link 422 can be rotatably connected to the second bracket 93 and mounted to the end wall of the vehicle body via the second bracket 93.

[0051] This utility model also provides a through passage including the above-mentioned pedal device.

[0052] As described above, the pedal device according to this utility model constructs the first connecting rod 41 as a single piece made of the first profile 5 and the second connecting rod 42 as a single piece made of the second profile 6. This means that during the manufacturing process of the linkage mechanism 4, only the first profile 5 and the second profile 6 with different cross-sections need to be formed by extrusion. This significantly reduces the manufacturing steps of the linkage mechanism 4. It avoids the need for complex forming processes such as welding and casting, as well as the required welding time, in existing linkage mechanisms. By cutting lengths from the first profile 5 and the second profile 6 to match the lengths of the first connecting rod 41 and the second connecting rod 42 as needed, the dimensions of the first connecting rod and the second connecting rod 42 can be flexibly adjusted, allowing the pedal device to be adapted to various models and types of through passageways.

[0053] Various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of this invention. Other embodiments of this invention will be apparent to those skilled in the art based on the practice of this invention disclosed in this specification. This specification and the examples disclosed herein should be considered illustrative only, and the true scope of this invention is defined by the appended claims and their equivalents.

Claims

1. A tread plate device for a passageway in a rail vehicle, characterized in that, The pedal device includes: First pedal (1); A second pedal (2) and a third pedal (3), the second pedal and the third pedal being respectively arranged at both ends of the first pedal in a first direction; and Linkage mechanism (4), the linkage mechanism is connected to the first pedal and extends in a first direction across the second pedal and the third pedal, the linkage mechanism includes a plurality of first links (41) and a plurality of second links (42). The plurality of first links (41) and the plurality of second links (42) are configured as an integral piece made of a first profile (5) and a second profile (6), respectively.

2. The pedal device according to claim 1, characterized in that, The plurality of first links (41) include a first long link (411) with a first through hole (4111) in the middle of the first long link, and the plurality of second links (42) include a second long link (421) that passes through the first through hole (4111) and is pivotally connected to the first long link.

3. The pedal device according to claim 2, characterized in that, The plurality of first connecting rods (41) further include two first short connecting rods (412) respectively disposed on both sides of the first long connecting rod (411), and the plurality of second connecting rods (42) further include two second short connecting rods (422) respectively disposed on both sides of the second long connecting rod (421). The first long connecting rod (411) has a first groove (4112) at both ends, and the first short connecting rod has a second groove (4121) at both ends. The two ends of the second long connecting rod pass through one of the second grooves (4121) of the two first short connecting rods and are connected to the corresponding first short connecting rod. One end of each second short connecting rod passes through the corresponding first groove (4112) and is connected to the first long connecting rod, and the other end of each second short connecting rod passes through the second groove (4121) and is connected to the first short connecting rod.

4. The pedal device according to claim 3, characterized in that, The connection between the second long link and the first long link has a first mounting portion (43) for mounting to the first pedal (1).

5. The pedal device according to claim 3, characterized in that, A second mounting portion (44) is formed at the connection between one of the second short links (422) and the first short link (412), and a third mounting portion (45) is formed at the connection between another second short link (422) and another first short link (412).

6. The pedal device according to claim 5, characterized in that, At least one of the first short link (412) and the second short link (422) corresponding to the second mounting part (44) is provided with a first support part (46) for supporting the second pedal (2), and / or, at least one of the first short link (412) and the second short link (422) corresponding to the third mounting part (45) is provided with a second support part (47) for supporting the third pedal (3).

7. The pedal device according to claim 6, characterized in that, A wear-resistant part (48) is sandwiched between the top of the first support part (46) and the second support part (47) and the corresponding pedal.

8. The pedal device according to claim 2, characterized in that, The first profile (5) includes two first transverse sections (51) arranged parallel to each other and a first longitudinal section (52) extending between the two first transverse sections. The second profile (6) includes two second transverse sections (61) arranged parallel to each other and a second longitudinal section (62) extending between the two second transverse sections. The height of the second profile defined by the two second transverse sections is configured to pass through the first through hole (4111) formed in the first profile (5).

9. The pedal device according to any one of claims 1 to 8, characterized in that, The pedal device includes two linkage mechanisms (4) arranged in a second direction transverse to the first direction and extending from the second pedal to the third pedal.

10. The pedal device according to claim 9, characterized in that, The pedal device further includes a mounting block (71) and a first connector (72) mounted on the first pedal. The mounting block is provided with a first threaded hole (711), and the first connector passes through one of the linkage mechanisms and is threadedly connected to the mounting block in the first threaded hole.

11. The pedal device according to claim 10, characterized in that, The pedal device further includes a guide (81) mounted on the first pedal, a slider (82) slidably connected to the guide, and a second connector (83). The guide is arranged along a second direction, and the slider is provided with a second threaded hole (821). The second connector passes through another of the linkage mechanisms (4) and is threadedly connected to the slider in the second threaded hole.

12. The pedal device according to claim 9, characterized in that, The pedal device further includes a first bracket (91) and a first fastener (92), the first fastener passing through each of the linkages (4) to rotatably connect each of the linkages to the first bracket.

13. The pedal device according to claim 9, characterized in that, The pedal device further includes a second bracket (93) and a second fastener (94), the second fastener passing through each of the linkage mechanisms (4) and rotatably connecting each of the linkage mechanisms to the second bracket.

14. A through passage, characterized in that, Includes the pedal device according to any one of claims 1 to 13.

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