A curved track sliding limiting structure for a rail car telescopic platform and a rail car

Abstract

The application provides a curved track sliding limiting structure for a rail car telescopic platform and a rail car, and relates to the technical field of rail cars.The curved track sliding limiting structure for the rail car telescopic platform comprises a connecting seat, a pin shaft, a supporting plate, a connecting plate and a limiting baffle in sequence connected with the telescopic platform, a limiting block connected between the limiting baffle and the side wall of the track, and the limiting block is slidably contacted on the side wall of the track when the rail car telescopic platform moves on the curved track, the track provides support force for the limiting block and the telescopic platform, prevents the telescopic platform from being separated from the track when moving on the curved track, improves the safety of the telescopic platform work, the limiting baffle can be embedded in different limiting grooves, the distance between the limiting block and the side wall of the track is adjusted, different rail cars and tracks are adapted, and the applicability of the curved track sliding limiting structure for the rail car telescopic platform is improved.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more specifically, to a curved track sliding limit structure for a rail vehicle telescopic platform and a rail vehicle. Background Technology

[0002] Double-decker car transport vehicles can use multi-functional platform cars and other railcars to load and unload cars. The rear of the multi-functional platform car is equipped with a pullable telescopic platform. The telescopic platform can be pulled up to one end onto the rail, serving as a passageway for vehicles. The end of the telescopic platform connected to the rail can move on the rail. However, the existing telescopic platforms can only move on straight rails and cannot move on curved rails. When encountering curved rails, the telescopic platform is prone to falling off the rails, causing safety hazards. Summary of the Invention

[0003] The problem this invention aims to solve is how to prevent the telescopic platform of a railcar from falling off on a curved track.

[0004] To address this, the present invention provides a curved track sliding limit structure for a telescopic platform of a railcar, comprising a connecting plate, a support plate, a pin, a limit baffle, a connecting seat, and a limit block. The connecting plate is used to slide in contact with the upper surface of the track. The support plate is perpendicularly connected to the upper surface of the connecting plate. The support plate and the connecting seat are connected by the pin, which extends in a direction perpendicular to the track. The connecting seat is used to connect with the tail of the telescopic platform. One end of the limit baffle has a connecting hole, which is fitted onto the pin and rotatably connected to it. The limit baffle is used to slide along the pin. The connecting plate has multiple limit grooves evenly distributed along the extension direction of the pin. The limit baffle is used to embed into and engage with the limit grooves. The limit block is connected to the end of the limit baffle away from the pin and is used to slide in contact with the side wall of the track.

[0005] Optionally, the limiting block is a bolt, and the end of the limiting baffle away from the pin is provided with a first threaded hole. The bolt is threadedly connected to the limiting baffle, and the nut of the bolt is set towards the side wall of the track.

[0006] Optionally, the curved track sliding limit structure for the telescopic platform of the railcar also includes at least one adjusting pad, the adjusting pad having a second threaded hole, the adjusting pad being threadedly connected to the bolt, and the adjusting pad abutting against the side of the limiting baffle facing the nut.

[0007] Optionally, the distance between two adjacent limiting grooves is 30mm, and the thickness of the adjusting pad is between 6 and 10mm.

[0008] Optionally, the limiting baffle has two first threaded holes along the extension direction of the track, and the two bolts are threadedly connected to the two threaded holes respectively.

[0009] Optionally, the connecting plate has an arc-shaped structure, and the convex surface of the arc-shaped structure is used for sliding contact with the upper surface of the track.

[0010] Optionally, there are two support plates, which are respectively used to connect to both ends of the pin shaft, and the pin shaft passes through the two support plates to achieve connection with the two support plates.

[0011] Optionally, the curved track sliding limiting structure for the telescopic platform of the railcar also includes a stop, which is an L-shaped structure. One end of the stop is connected to the support plate, and the other end of the stop is arranged in a direction away from the connecting plate. The support plate and the stop together form a receiving groove, which is used to accommodate the limiting baffle.

[0012] Compared with the prior art, the beneficial effects of the curved track sliding limit structure for the telescopic platform of the railcar described in this invention are:

[0013] This invention features a connecting seat at the rear of a telescopic platform, with a pin on the side of the connecting seat. The end of the pin furthest from the connecting seat connects to a support plate. Both the connecting seat and the support plate have shaft holes corresponding to the pin's diameter. The pin passes through these shaft holes, connecting the connecting seat and the support plate together. The pin is positioned perpendicular to the track. The lower surface of the support plate connects to the upper surface of the connecting plate, and the lower surface of the connecting plate contacts the upper surface of the track, providing support for the connecting plate. Multiple identical limiting grooves are evenly distributed on the connecting plate along the pin's extension direction. A limiting baffle is also provided, with a connecting hole slightly larger than the pin's diameter at one end, allowing the limiting baffle to be fitted onto the pin through the connecting hole. It can slide along the axial direction of the pin. When the limiting baffle slides along the axial direction of the pin, it can pass through multiple limiting grooves. The limiting baffle can also rotate around the pin. The end of the limiting baffle away from the pin is connected to a limiting block. When the telescopic platform of the railcar moves on the curved track, the limiting baffle rotates around the pin in the direction of the track until the limiting baffle is embedded in the limiting groove and engages with the limiting groove. The limiting groove hinders the axial movement of the limiting baffle along the pin. At this time, the end of the limiting baffle away from the pin is located below the connecting plate, and the limiting block is located on the side of the track. There is a certain gap between the limiting block and the side wall of the track, for example, 5mm. When the telescopic platform turns on the curved track, the telescopic platform deviates under the action of the steering force. At this time, the limiting block can slide and contact the side wall of the track. The track acts as the limiting block. Providing support, the limiting baffle, fixed within the limiting groove, provides horizontal support to the connecting plate, thus supporting the telescopic platform and preventing it from detaching from the track when moving on curved tracks, improving operational safety. During this process, the lower surface of the connecting plate slides in contact with the upper surface of the track, while the track provides vertical support to the connecting plate. When the railcar travels on a straight track, the limiting baffle can rotate away from the track to prevent the limiting block from contacting the track and affecting the telescopic platform's movement. Multiple limiting grooves extend parallel to the axis of the pin, allowing the limiting baffle to move on the pin and embed into different limiting grooves, thereby adjusting the distance between the limiting block and the track sidewall. This allows for the use of different tracks... When the vehicle is in contact with the track, the limiting slot can be replaced to ensure that the limiting block can always slide in contact with the side wall of the track, providing support for the telescopic platform and preventing it from detaching from the curved track. This improves the applicability of the sliding limiting structure for the curved track of the telescopic platform. The two ends of the limiting block connection can be connected to the left or right side of the limiting baffle connection away from the pin connection. The limiting baffle connection can move along the axial direction of the pin connection, moving to the left or right side of the track connection. When the limiting baffle connection moves to the left side of the track connection and engages with the limiting slot on the left side of the track, the part of the limiting block connection on the right side of the limiting baffle connection can slide in contact with the track connection. When the limiting baffle connection moves to the right side of the track connection and engages with the limiting slot on the right side of the track, ...The limiting block connection, located on the left side of the limiting baffle connection, can slide in contact with the track connection. When the telescopic platform connection turns to either side, the track connection provides support through the limiting block connection, preventing the telescopic platform connection from detaching from the curved track connection. This improves the applicability of the curved track sliding limiting structure for telescopic platforms.

[0014] In addition, to solve the above problems, the present invention also provides a railcar, including the above-mentioned curved track sliding limit structure for the railcar telescopic platform.

[0015] Compared with the prior art, the beneficial effects of the railcar described in this invention are roughly the same as those of the curved track sliding limit structure for the railcar telescopic platform described above, and will not be repeated here.

[0016] Optionally, the railcar includes two curved track sliding limiting structures for the railcar telescopic platform, and the limiting blocks of the two curved track sliding limiting structures are respectively used to slide in contact with the side walls of the two opposing tracks. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the curved track sliding limit structure for the telescopic platform of the railcar described in the embodiment of the present invention;

[0018] Figure 2 This is the second schematic diagram of the curved track sliding limit structure for the telescopic platform of the railcar described in this embodiment of the invention;

[0019] Figure 3 This is the third schematic diagram of the curved track sliding limit structure for the telescopic platform of the railcar described in this embodiment of the invention;

[0020] Figure 4 This is the fourth schematic diagram of the curved track sliding limit structure for the telescopic platform of the railcar described in this embodiment of the invention;

[0021] Figure 5 This is a schematic diagram of the structure of the limiting baffle according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the connecting plate according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the support plate according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Connecting plate; 11-Limiting groove; 2-Supporting plate; 3-Pin; 4-Limiting block; 5-Limiting baffle; 51-Connecting hole; 52-First threaded hole; 61-Telescopic platform; 62-Connecting seat; 7-Rail; 8-Adjusting pad; 9-Stop. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0029] Furthermore, although specific embodiments have been described herein, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways not used in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

[0030] To solve the above problems, such as Figures 1 to 3 , Figures 5 to 7As shown, this invention provides a curved track sliding limiting structure for a telescopic platform of a railcar, including a connecting plate 1, a support plate 2, a pin 3, a limiting baffle 5, a connecting seat 62, and a limiting block 4. The connecting plate 1 is used for sliding contact with the upper surface of the track 7. The support plate 2 is perpendicularly connected to the upper surface of the connecting plate 1. The support plate 2 and the connecting seat 62 are connected by the pin 3, which extends in a direction perpendicular to the track 7. The connecting seat 62 is used for connecting to the tail of the telescopic platform 61. One end of the baffle 5 is provided with a connecting hole 51, which is sleeved on the pin 3 and rotatably connected to the pin 3. The baffle 5 is used to slide along the pin 3. Multiple limiting grooves 11 are evenly distributed on the connecting plate 1 along the extension direction of the pin 3. The baffle 5 is used to embed into the limiting grooves 11 and engage with the limiting grooves 11. The limiting block 4 is connected to the end of the baffle 5 away from the pin 3. The limiting block 4 is used to slide in contact with the side wall of the track 7.

[0031] In this embodiment, a connecting seat 62 is provided at the tail of the telescopic platform 61, and a pin 3 is provided on the side of the connecting seat 62. The end of the pin 3 away from the connecting seat 62 is connected to the support plate 2. Both the connecting seat 62 and the support plate 2 have shaft holes with a size corresponding to the diameter of the pin 3. The pin 3 passes through the shaft holes on the connecting seat 62 and the support plate 2, connecting the connecting seat 62 and the support plate 2 together. The pin 3 is arranged in a direction perpendicular to the track 7. The lower surface of the support plate 2 is connected to the upper surface of the connecting plate 1, and the lower surface of the connecting plate 1 is in contact with the upper surface of the track 7. The track 7 can provide support force for the connecting plate 1. Multiple limiting grooves 11 of the same size are evenly distributed on the connecting plate 1 along the extension direction of the pin. A limiting baffle 5 is also provided. One end of the plate has a connecting hole 51, slightly larger than the diameter of the pin 3. The limiting baffle 5 can be fitted onto the pin 3 through the connecting hole 51 and can slide along the axial direction of the pin 3. When the limiting baffle 5 slides along the axial direction of the pin 3, it can pass through multiple limiting grooves 11. The limiting baffle 5 can also rotate around the pin 3. The end of the limiting baffle 5 away from the pin 3 is connected to a limiting block 4. When the railcar telescopic platform 61 moves on the curved track 7, the limiting baffle 5 rotates around the pin 3 towards the track 7 until the limiting baffle 5 is embedded in the limiting groove 11 and engages with the limiting groove 11. The limiting groove 11 prevents the limiting baffle 5 from moving along the axial direction of the pin 3. At this time, the end of the limiting baffle 5 away from the pin 3 is located below the connecting plate 1, and the limiting block 4 is located on the side of the track 7. The limiting block 4 and There is a certain gap between the side walls of the track 7, for example, 5mm. When the telescopic platform 61 turns on the curved track 7, the telescopic platform 61 deviates under the action of the steering force. At this time, the limiting block 4 can slide and contact the side wall of the track 7. The track 7 provides support for the limiting block 4. The limiting baffle 5 is connected in the limiting groove 11 and cannot move. It provides support for the connecting plate 1 in the horizontal direction, and thus provides support for the telescopic platform 61, preventing the telescopic platform 61 from detaching from the track 7 when moving on the curved track 7, thus improving the safety of the telescopic platform 61. During this process, the lower surface of the connecting plate 1 slides in contact with the upper surface of the track 7. The track 7 provides support for the connecting plate 1 in the vertical direction. When the railcar travels on the straight track 7, the limiting baffle... 5 can rotate away from the track 7 to prevent the limiting block 4 from contacting the track 7 and affecting the movement of the telescopic platform 61. The extension direction of multiple sets of limiting grooves 11 is parallel to the axis of the pin 3. The limiting baffle 5 can move on the pin 3 and be embedded in different limiting grooves 11, thereby adjusting the distance between the limiting block 4 and the side wall of the track 7. When using different railcars and tracks 7, the limiting grooves 11 can be replaced to ensure that the limiting block 4 can always slide in contact with the side wall of the track 7, providing support for the telescopic platform 61 and preventing the telescopic platform 61 from detaching from the curved track 7. This improves the applicability of the curved track sliding limiting structure for the railcar telescopic platform. The two ends of the limiting block 4 can be connected to the left or right side of the limiting baffle 5 away from the pin 3, respectively.The limiting baffle 5 moves axially along the pin 3, and can move to the left or right side of the track 7. When the limiting baffle 5 moves to the left side of the track 7 and engages with the limiting groove 11 on the left side of the track 7, the portion of the limiting block 4 located on the right side of the limiting baffle 5 can slide in contact with the track 7. When the limiting baffle 5 moves to the right side of the track 7 and engages with the limiting groove 11 on the right side of the track 7, the portion of the limiting block 4 located on the left side of the limiting baffle 5 can slide in contact with the track 7. When the telescopic platform 61 turns to either side, the track 7 can provide support for the telescopic platform 61 through the limiting block 4, preventing the telescopic platform 61 from detaching from the curved track 7, thus improving the applicability of the curved track sliding limiting structure for the telescopic platform of the railcar.

[0032] Specifically, limit baffles 5 and limit blocks 4 can be set on both sides of the track 7. When the telescopic platform 61 turns to the left or right, the track 7 can provide support for the telescopic platform 61 through the limit blocks 4 to prevent the telescopic platform 61 from detaching from the curved track 7.

[0033] Optionally, such as Figure 1 As shown, the limiting block 4 is a bolt, and the limiting baffle 5 has a first threaded hole 52 at one end away from the pin 3. The bolt is threadedly connected to the limiting baffle 5, and the nut of the bolt is set towards the side wall of the track 7.

[0034] In this embodiment, by setting the limiting block 4 as a bolt, and opening a first threaded hole 52 for use with the bolt at the end of the limiting baffle 5 away from the pin 3, the bolt connection operation is simple, and the nut of the bolt is set towards the side wall of the track 7, and the contact area of ​​the nut is larger than the contact area of ​​the stud tail, so it is not easy to damage the track 7.

[0035] Specifically, a nut can be installed at one end of the bolt stud that protrudes from the limiting baffle 5, and used in conjunction with the bolt to improve the stability of the connection between the bolt and the limiting baffle 5.

[0036] Optionally, such as Figure 1 As shown, the curved track sliding limit structure for the telescopic platform of the railcar also includes at least one adjusting pad 8. The adjusting pad 8 has a second threaded hole, the adjusting pad 8 is threadedly connected to the bolt, and the adjusting pad 8 abuts against the side of the limiting baffle 5 facing the nut.

[0037] In this embodiment, by connecting an adjusting shim 8 to the side of the limiting baffle 5 facing the nut, and the adjusting shim 8 having a second threaded hole, the adjusting shim 8 is threadedly connected to the bolt through the second threaded hole. The adjusting shim 8 effectively lengthens the limiting baffle 5 in the axial direction of the bolt, allowing the bolt to move along the second threaded hole towards the side wall of the track 7 to adjust the distance between the nut and the side wall of the track 7. When the limiting baffle 5 moves between the limiting grooves 11 and appears in the previous limiting groove 11, the distance between the nut and the track 7 is too far to contact the side wall of the track 7. If the nut moves towards the track 7 by one more limiting groove 11, and the distance between the nut and the side wall of the track 7 is less than the distance between two adjacent limiting grooves 11, making it impossible for the limiting baffle 5 to move towards the track 7, an adjusting shim 8 can be used to shorten the distance between the nut and the side wall of the track 7. If one adjusting shim 8 is not enough, an additional adjusting shim 8 can be added until the telescopic platform 61 moves on the curved track 7, at which point the nut of the bolt can slide into contact with the side wall of the track 7. The side wall of the track 7 provides support for the telescopic platform 61, preventing the telescopic platform 61 from detaching from the curved track 7.

[0038] Optionally, the distance between two adjacent limiting grooves 11 is 30mm, and the thickness of the adjusting pad 8 is between 6 and 10mm.

[0039] In this embodiment, by setting the spacing between adjacent limiting grooves 11 to 30mm and setting the thickness of the adjusting shim 8 to between 6 and 10mm, for example, 8mm, it is convenient to use the adjusting shim 8 to shorten the distance between the nut and the side wall of the track 7 when the limiting baffle 5 cannot move between the limiting grooves 11.

[0040] Optionally, the limiting baffle 5 has two first threaded holes 52 along the extension direction of the track 7, and the two bolts are threadedly connected to the two threaded holes respectively.

[0041] In this embodiment, as Figure 5 As shown, by setting two bolts and setting the two bolts along the extension direction of the track 7, the two bolts contact the track 7. Compared with the point contact of one bolt with the track 7, the two bolts can contact the track 7 simultaneously, making the contact between the bolt and the track 7 more stable, the contact area larger, the supporting force borne by a single bolt smaller, and reducing damage to the bolt. Correspondingly, the limiting baffle 5 has two first threaded holes 52, which are threadedly connected to the two bolts respectively.

[0042] Optionally, the connecting plate 1 has an arc-shaped structure, and the convex surface of the arc-shaped structure is used to slide in contact with the upper surface of the track 7.

[0043] In this embodiment, as Figure 7As shown, by setting the connecting plate 1 as an arc-shaped structure, the convex surface of the arc-shaped structure is connected to the upper surface of the drum, and the contact area between the arc-shaped structure and the upper surface of the track 7 is small, which can reduce the friction between the connecting plate 1 and the track 7, making it easier for the connecting plate 1 to slide on the track 7. Correspondingly, the lower surface of the support plate 2 is an arc-shaped structure.

[0044] Optionally, such as Figure 1 As shown, there are two support plates 2, which are used to connect to the two ends of the pin 3 respectively. The pin 3 passes through the two support plates 2 to achieve connection with the two support plates 2.

[0045] In this embodiment, two support plates 2 are provided, which are respectively connected to the two ends of the pin 3. The two ends of the pin 3 pass through the two support plates 2 and are connected to the two support plates 2. The two support plates 2 are connected to the connecting seat 62 through the pin 3, so that the connection between the connecting seat 62 and the support plates 2 and the connecting plate 1 is more stable.

[0046] Specifically, such as Figure 1 As shown, there are two parts on the connecting seat 62 that are connected to the pin 3. Alternatively, two support plates 2 can be set at one end of the connecting plate 1 near the connecting seat 62, corresponding to the two ends of the connecting seat 62 respectively. In this case, there are a total of three support plates 2 on the connecting plate 1.

[0047] Optionally, such as Figures 1 to 3 As shown, the curved track sliding limit structure for the telescopic platform of the railcar also includes a stop 9. The stop 9 has an L-shaped structure. One end of the stop 9 is connected to the support plate 2, and the other end of the stop 9 is set in a direction away from the connecting plate 1. The support plate 2 and the stop 9 together form a receiving groove, which is used to accommodate the limit baffle 5.

[0048] In this embodiment, an L-shaped stop 9 is provided, with one end connected to the support plate 2 and the other side facing away from the connecting plate 1 (i.e., upward). The opening of the receiving groove formed by the L-shaped stop and the support plate 2 faces away from the connecting plate 1. The support plate 2 is perpendicular to the pin 3 and parallel to the limiting stop 5. Therefore, when the limiting stop 5 rotates around the pin 3, it can be engaged in the receiving groove to prevent arbitrary movement. Specifically, when the telescopic platform 61 moves on the linear track 7, the limiting stop 5 moves along the pin 3 to one side of the support plate 2, and then rotates around the pin 3 until it is engaged in the receiving groove, preventing arbitrary movement of the limiting stop 5 and affecting the movement of the telescopic platform 61 along the linear track 7.

[0049] Another embodiment of the present invention provides a railcar including the above-described curved track sliding limit structure for a railcar telescopic platform.

[0050] Compared with the prior art, the beneficial effects of the railcar in this embodiment are roughly the same as those of the above-mentioned railcar telescopic platform curved track sliding limit structure, and will not be repeated here.

[0051] Optionally, such as Figure 4 As shown, the railcar includes two curved track sliding limit structures for the railcar telescopic platform. The limit blocks 4 of the two curved track sliding limit structures are respectively used to slide in contact with the side walls of the two opposing tracks 7.

[0052] In this embodiment, by setting a curved track sliding limit structure for the telescopic platform of the railcar on both tracks 7, the two limit blocks 4 can slide in contact with the side walls of the two tracks 7 respectively, so that when the telescopic platform 61 turns in any direction on the curved track 7, it can be supported by the track 7, preventing the telescopic platform 61 from falling off the curved track 7.

[0053] Specifically, the curved track sliding limit structure of the railcar telescopic platform can accommodate rails with a curve radius of ≥600m and a span along the direction of rails 7 not greater than 5m.

[0054] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A curved track sliding limiting structure for a telescopic platform of a railcar, characterized in that, The system includes a connecting plate (1), a support plate (2), a pin (3), a limiting baffle (5), a connecting seat (62), and a limiting block (4). The connecting plate (1) is used to slide in contact with the upper surface of the track (7). The support plate (2) is perpendicularly connected to the upper surface of the connecting plate (1). The support plate (2) and the connecting seat (62) are connected by the pin (3), which extends in a direction perpendicular to the track (7). The connecting seat (62) is used to connect to the tail of the telescopic platform (61). One end of the limiting baffle (5) has a connecting hole. (51) The connecting hole (51) is sleeved on the pin (3) and rotatably connected to the pin (3). The limiting baffle (5) is used to slide along the pin (3). Multiple limiting grooves (11) are evenly distributed on the connecting plate (1) along the extension direction of the pin (3). The limiting baffle (5) is used to be embedded in the limiting groove (11) and engaged with the limiting groove (11). The limiting block (4) is connected to the end of the limiting baffle (5) away from the pin (3). The limiting block (4) is used to slide in contact with the side wall of the track (7).

2. The curved track sliding limiting structure for the telescopic platform of a railcar according to claim 1, characterized in that, The limiting block (4) is a bolt, and the limiting baffle (5) has a first threaded hole (52) at one end away from the pin (3). The bolt is threadedly connected to the limiting baffle (5), and the nut of the bolt is set towards the side wall of the track (7).

3. The curved track sliding limiting structure for the telescopic platform of a railcar according to claim 2, characterized in that, It also includes at least one adjusting pad (8), the adjusting pad (8) having a second threaded hole, the adjusting pad (8) being threadedly connected to the bolt, and the adjusting pad (8) abutting against the side of the limiting baffle (5) facing the nut.

4. The curved track sliding limiting structure for the telescopic platform of a railcar according to claim 3, characterized in that, The distance between two adjacent limiting grooves (11) is 30mm, and the thickness of the adjusting pad (8) is between 6 and 10mm.

5. The curved track sliding limiting structure for a telescopic platform of a railcar according to claim 2, characterized in that, The limiting baffle (5) has two first threaded holes (52) along the extension direction of the track (7), and the two bolts are threadedly connected to the two threaded holes respectively.

6. The curved track sliding limiting structure for a telescopic platform of a railcar according to claim 1, characterized in that, The connecting plate (1) has an arc-shaped structure, and the convex surface of the arc-shaped structure is used to slide in contact with the upper surface of the track (7).

7. The curved track sliding limiting structure for a telescopic platform of a railcar according to claim 1, characterized in that, There are two support plates (2), which are used to connect to the two ends of the pin (3) respectively. The pin (3) passes through the two support plates (2) to achieve connection with the two support plates (2).

8. The curved track sliding limiting structure for a telescopic platform of a railcar according to claim 1, characterized in that, It also includes a stop (9), which is an L-shaped structure. One end of the stop (9) is connected to the support plate (2), and the other end of the stop (9) is set in a direction away from the connecting plate (1). The support plate (2) and the stop (9) together form a receiving groove, which is used to accommodate the limiting baffle (5).

9. A railcar, characterized in that, Includes the curved track sliding limit structure for a telescopic platform for a railcar as described in any one of claims 1 to 8.

10. The railcar according to claim 9, characterized in that, It includes two curved track sliding limit structures for the telescopic platform of the railcar, and the limit blocks (4) of the two curved track sliding limit structures are respectively used to slide in contact with the side walls of the two opposing tracks (7).

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