Traction pin, bogie and railway vehicle

Abstract

The embodiment of the utility model provides a traction pin, a bogie and a railway vehicle, the traction pin comprises a pin main body part, a vehicle body connecting part and a framework stopping part, the vehicle body connecting part is located at one end of the pin main body part, and the framework stopping part is located at the other end of the pin main body part; and a wearing plate mounting groove for embedding a longitudinal wearing plate is formed in the side surface of the framework stopping part. According to the traction pin, the bogie and the railway vehicle provided by the embodiment of the invention, the mounting difficulty of the wearing plate can be simplified, and the mounting efficiency is improved.

Description

Technical Field

[0001] The present application relates to bogie technology, and in particular to a traction pin, a bogie and a rail vehicle. Background Art

[0002] The bogie is one of the important parts of the rail vehicle. The bogie is used to carry the body of the rail vehicle and realize the running and steering functions. A traction device is provided between the bogie and the body. The traction device is used to transmit the longitudinal traction force between the body and the bogie to realize running and braking.

[0003] The traction pin (also called the center pin) is a common solution for traction devices. The top of the traction pin is connected to the vehicle body with bolts, and the bottom of the traction pin is inserted into the frame of the bogie to generate longitudinal traction and braking force between the frames. A wear plate is provided on the side of the traction pin, and the wear plate is fixed to the traction pin by bolts. Two longitudinal stop assemblies are correspondingly provided on the frame. When the vehicle is driving, the wear plate of the traction pin contacts the longitudinal stop assembly on one side to transmit traction or braking force.

[0004] During operation, the wear plate and the longitudinal stop assembly will have many contacts and collisions, which can easily loosen the bolts connecting the wear plate, causing the wear plate to loosen. Once the wear plate loosens and falls off, the side of the traction pin will directly contact the longitudinal stop assembly, causing greater wear on the traction pin and shortening the service life of the traction pin.

[0005] In the process of installing the wear plate, multiple people are required to press the wear plate against the side of the traction pin, hold the wear plate upward, and adjust the position of the wear plate so that all the bolt holes on the wear plate are aligned with the bolt holes of the traction pin. Then the other operators drive the bolts into the bolt holes of the wear plate and the traction pin to fix them. The operation process is complicated and the work intensity is high. In addition, the alignment process also takes a long time. During the installation process, once the wear plate is misplaced, the position of the wear plate needs to be readjusted, and the installation efficiency is very low. Summary of the invention

[0006] In order to solve one of the above-mentioned technical defects, a traction pin, a bogie and a rail vehicle are provided in an embodiment of the present application.

[0007] According to a first aspect of an embodiment of the present application, there is provided a traction pin, comprising: a pin body portion, a vehicle body connection portion, and a frame stop portion, wherein the vehicle body connection portion is located at one end of the pin body portion, and the frame stop portion is located at the other end of the pin body portion;

[0008] A wear plate installation groove for embedding the longitudinal wear plate is provided on the side surface of the frame stopper.

[0009] According to the second aspect of the embodiment of the present application, a bogie is provided, comprising: a side beam, a cross beam and the traction pin as described above; the cross beam is connected between two side beams, a center pin hole is provided in the cross beam, and a frame stop portion in the traction pin is inserted into the center pin hole.

[0010] According to a third aspect of an embodiment of the present application, there is provided a rail vehicle, comprising: a bogie as described above.

[0011] In the traction pin provided in the embodiment of the present application, the lower end side wall of the wear plate mounting groove plays a certain supporting role on the longitudinal wear plate. Therefore, the operator only needs to press the longitudinal wear plate to prevent it from falling, and there is no need to apply a large supporting force. It is more convenient to adjust the position of the longitudinal wear plate to align the bolt hole, which is convenient, quick and less labor-intensive.

[0012] In addition, during vehicle driving, the lower end side wall of the wear plate mounting groove plays a certain supporting role for the longitudinal wear plate, reducing the probability of the longitudinal wear plate falling off due to loose bolts, thereby reducing the probability of the traction pin directly contacting the longitudinal stop assembly, ensuring the service life of the traction pin, and improving driving safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 A schematic diagram of the structure of a bogie provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of the structure of a traction pin provided in an embodiment of the present application;

[0016] Figure 3 A schematic diagram of a structure in which a wear plate mounting groove is provided on the side of a traction pin provided in an embodiment of the present application;

[0017] Figure 4 A schematic diagram of a traction pin provided in another angle in an embodiment of the present application;

[0018] Figure 5 A schematic diagram of a structure in which a stopper is provided on a traction pin provided in an embodiment of the present application;

[0019] Figure 6 A schematic diagram from another angle showing that the traction pin provided in the embodiment of the present application is provided with a stopper.

[0020] Reference numerals:

[0021] 11-side beam; 12-cross beam;

[0022] 2-wheelset;

[0023] 51-traction pin; 511-pin body; 5111-pin connecting arm; 5112-hollowing area; 512-body connecting part; 513-frame stop part; 514-wear plate mounting groove; 515-wear plate mounting hole; 52-longitudinal stop assembly; 53-lateral stop assembly; 54-longitudinal wear plate. DETAILED DESCRIPTION

[0024] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] This embodiment provides a traction pin, which can be applied to a bogie of a rail vehicle, and is used to transmit longitudinal traction and braking force between the vehicle body and the bogie. The rail vehicle can be a fuel-powered vehicle, a gas-powered vehicle, or an electric-powered vehicle. The vehicle can be a conventional train, an EMU, a subway, a light rail, etc.

[0026] In this embodiment, the vehicle length direction is called the longitudinal direction, the vehicle width direction is called the lateral direction, and the vehicle height direction is called the vertical direction, vertical direction or vertical direction.

[0027] like Figure 1 As shown, the bogie includes: a frame, a wheelset 2, and a traction pin 51. Among them, the frame includes: a side beam 11 and a cross beam 12, and the cross beam 12 is connected between two side beams 11. The wheelset 2 is arranged at the end of the side beam 11, and the wheelset 2 includes an axle, a wheel arranged on the axle, and an axle box. A primary suspension device 3 is arranged between the axle box and the side beam 11, and a secondary suspension device 4 is arranged between the frame and the car body.

[0028] One implementation is that the traction pin 51 is disposed between the frame and the vehicle body. Specifically, the top of the traction pin 51 is connected to the vehicle body, and the bottom cooperates with the cross beam 12 to transmit the longitudinal force between the vehicle body and the frame.

[0029] Another embodiment is to use a bolster extending in the transverse direction and connected to the car body. The bolster is located above the cross beam, the top of the traction pin 51 is connected to the bolster, and the bottom cooperates with the cross beam 12 to transmit the longitudinal force between the bolster and the frame. In this bogie, the secondary suspension device 4 is arranged between the frame and the bolster.

[0030] The traction pin 51 provided in this embodiment can be applied to bogies with bolsters or bogies without bolsters.

[0031] like Figure 2 and Figure 3 As shown, the traction pin 51 provided in this embodiment includes: a pin body 511, a vehicle body connection portion 512 and a frame stop portion 513. The vehicle body connection portion 512 is located at one end of the pin body 511, and the frame stop portion 513 is located at the other end of the pin body 511. The vehicle body connection portion 512 is used to connect with the vehicle body or the bolster, and the frame stop portion 513 is used to cooperate with the crossbeam 12.

[0032] A wear plate installation groove 514 is provided on the side of the frame stopper 513, and the longitudinal wear plate 54 is inserted into the wear plate installation groove 514 for installation. During the assembly of the longitudinal wear plate 54, the longitudinal wear plate 54 is first placed into the wear plate installation groove 514, and the lower end side wall of the wear plate installation groove 514 plays a certain supporting role for the longitudinal wear plate 54. Therefore, the operator only needs to press the longitudinal wear plate to prevent it from falling, and does not need to apply a large supporting force. It is more convenient to adjust the position of the longitudinal wear plate to align the bolt hole, which is convenient and fast, and has low labor intensity.

[0033] In addition, during vehicle driving, the lower end side wall of the wear plate mounting groove 514 plays a certain supporting role on the longitudinal wear plate 54, reducing the probability of the longitudinal wear plate falling off due to loose bolts, thereby reducing the probability of the traction pin directly contacting the longitudinal stop assembly, ensuring the service life of the traction pin, and improving driving safety and reliability.

[0034] Furthermore, a wear plate mounting hole 515 for mounting the longitudinal wear plate 54 is provided at the bottom of the wear plate mounting groove 514, and the wear plate mounting hole 515 is arranged at the edge of the bottom surface of the wear plate mounting groove 514. Figure 3 As shown, three wear plate mounting holes 515 are arranged at intervals at the upper edge of the bottom surface of the wear plate mounting groove 514, a wear plate mounting hole 515 is respectively arranged in the middle of the left and right edges, and three wear plate mounting holes 515 are arranged at intervals at the lower edge.

[0035] In addition, the depth of the wear plate installation groove 514 is equal to the thickness of the longitudinal wear plate 54, so that the longitudinal wear plate 54 can be completely embedded in the wear plate installation groove 514. Alternatively, the depth of the wear plate installation groove 514 is less than the thickness of the longitudinal wear plate 54, so that the longitudinal wear plate 54 protrudes from the side of the traction pin, thereby further reducing the probability of the longitudinal stop assembly 52 contacting the traction pin 54.

[0036] On the basis of the above technical solution, this embodiment also provides a traction pin: Figures 2 to 4 As shown, one end of the pin main body 511 branches into two pin connection arms 5111, and each pin connection arm 5111 is connected to a vehicle body connection portion 512. A hollow area 5112 is formed between the two pin connection arms 5111.

[0037] Compared with the traditional traction pin, the top of the traction pin 51 provided in this embodiment is hollowed out to form a hollow area 5112, which can significantly reduce the weight of the traction pin 51. After simulating the above design, the technicians found that the hollow area 5112 does not affect the strength of the traction pin 51 itself.

[0038] Moreover, the space vacated by the hollowed-out area 5112 can accommodate other components, such as brake lines, signal cables, etc. In the traditional solution, these pipelines, cables, etc. are routed from the periphery of the traction pin and fixed to the frame by cable ties and fasteners. On the one hand, the layout of the pipelines and cables is relatively messy, and it is easy to interfere with the surrounding components and wear. In particular, there will be relative movement between the traction pin and the frame. Especially when the vibration is large, these pipelines and cables will produce a large shake, which further increases the possibility of interference with the surrounding components. On the other hand, it is necessary to set up multiple fixed points to fix the pipelines and cables to the frame by cable ties and fasteners, which increases the number of parts and components and also increases the workload of assembly and maintenance. Moreover, if the cable ties and fasteners fall off during the driving process of the vehicle, the pipelines and cables will become loose, resulting in a large shake and interference with other components.

[0039] This embodiment allows these pipes and cables to pass through the hollowed-out area 5112, which can solve the problems existing in the traditional solution. The pipes and cables are constrained in the traction pin and will not shake much, thereby reducing the probability of interference and wear with surrounding components, extending the service life of the pipes and cables, and improving reliability and safety. In addition, the number of parts such as cable ties and fasteners is reduced, reducing the workload of assembly and maintenance. In addition, scattered pipes or cables are almost invisible from the outside, which is more tidy.

[0040] The traction pin provided in this embodiment includes: a pin main body, a vehicle body connecting part and a frame stop part, the vehicle body connecting part is located at one end of the pin main body, and the frame stop part is located at the other end of the pin main body; one end of the pin main body is bifurcated into two pin connecting arms, each pin connecting arm is connected to a vehicle body connecting part; a hollow area is formed between the two pin connecting arms, which can significantly reduce the weight of the traction pin, thereby reducing the workload during the traction pin assembly process and reducing material costs; and the hollow area can be used as a wire passing space, and pipelines, cables, etc. can be stored in the hollow area, which can solve the problem of interference and wear between pipelines and cables and surrounding components, thereby improving reliability and safety and reducing maintenance costs.

[0041] On the basis of the above technical solution, the edge of the hollowed-out area 5112 is in a curved shape that is recessed toward the pin body 511 , so that there is no stress concentration portion, thereby improving the strength of the traction pin 51 .

[0042] Furthermore, hollow areas 5112 are provided on both sides of the pin body 511, and the hollow areas 5112 on both sides are arranged symmetrically, serving as wire passages, so that pipelines and cables pass through the hollow areas 5112 from one side of the traction pin 51 to the other side of the traction pin 51. The symmetrical arrangement can balance the forces on both sides of the traction pin 51, and avoid deformation of the traction pin due to excessive torque.

[0043] A specific solution: the cross-sectional area of ​​the pin body 511 gradually increases along the direction from the frame stopper 513 toward the vehicle body connection portion 512. Then, the top cross-sectional area of ​​the pin body 511 is larger and connected to the vehicle body connection portion 512, which can increase the area of ​​the connection region with the vehicle body or the bolster, thereby improving the connection strength and reliability.

[0044] Furthermore, the distance between the two vehicle body connection parts 512 is greater than the distance between the two pin connection arms 5111, which is equivalent to the vehicle body connection part 512 further expanding outward relative to the pin connection arm 5111, further increasing the area of ​​the connection region with the vehicle body or the pillow beam.

[0045] A specific solution: the vehicle body connection part 512 has two vehicle body connection ends, each of which is provided with at least two bolt holes, which is equivalent to one vehicle body connection end being connected to the vehicle body or the bolster through four bolts passing through the bolt holes, respectively, and having high connection strength and reliability.

[0046] The two vehicle body connecting parts 512 are symmetrically arranged, so that the traction pin 51 is evenly stressed and the probability of torsional deformation is reduced.

[0047] On the basis of the above technical solution, the cross section of the frame stop portion 513 is a roughly rectangular structure having two transverse stop side surfaces and two longitudinal stop side surfaces, and a transition chamfer structure is provided between the transverse stop side surfaces and the longitudinal stop side surfaces.

[0048] The longitudinal stopper side is used to cooperate with the cross beam 12 to transmit longitudinal traction or braking force. The transverse stopper side is used to cooperate with the cross beam 12 to perform transverse limit and limit the relative displacement between the car body and the bogie in the transverse direction.

[0049] like Figures 2 to 6 As shown, a longitudinal wear plate 54 is provided on the side of the longitudinal stopper, and a longitudinal stopper assembly 52 is connected to the outer side of the longitudinal wear plate 54. Longitudinal stopper assemblies 52 are provided on both sides of the traction pin 51. When the vehicle is traveling forward, the longitudinal stopper assembly on one side contacts the cross beam 12 to transmit longitudinal traction or braking force; when the vehicle is traveling in reverse, the longitudinal stopper assembly on the other side contacts the cross beam 12 to transmit longitudinal traction or braking force.

[0050] The transverse stop surface is connected with a transverse stop assembly 53, and transverse stop assemblies 53 are provided on both sides of the traction pin 51. When the vehicle passes a curve, for example, when turning left, the transverse stop assembly 53 on the right side of the traction pin 51 contacts the cross beam to transmit a transverse force, so as to drive the vehicle body to move left to follow the bogie to realize the turn; when turning right, the transverse stop assembly 53 on the left side of the traction pin 51 contacts the cross beam to transmit a transverse force, so as to drive the vehicle body to move right to follow the bogie to realize the turn.

[0051] On the basis of the above technical solution, this embodiment further provides a bogie, comprising: a side beam 11, a cross beam 12 and a traction pin provided in any of the above contents. The cross beam 12 is connected between the two side beams 11, and a center pin hole is provided in the cross beam 12, and the frame stopper 513 in the traction pin 51 is inserted into the center pin hole.

[0052] This embodiment also provides a rail vehicle, comprising the above-mentioned bogie. The bogie and rail vehicle provided by this embodiment have the same technical effects as the above-mentioned traction pin.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A traction pin, characterized in that: include: A pin main body, a vehicle body connection portion and a frame stop portion, wherein the vehicle body connection portion is located at one end of the pin main body and the frame stop portion is located at the other end of the pin main body; A wear plate installation groove for embedding the longitudinal wear plate is provided on the side surface of the frame stopper.

2. The traction pin according to claim 1, characterized in that: The bottom of the wear plate mounting groove is also provided with a wear plate mounting hole for mounting the longitudinal wear plate.

3. The traction pin according to claim 2, characterized in that: The wearing plate mounting holes are arranged at the edge of the bottom surface of the wearing plate mounting groove.

4. The traction pin according to claim 1, characterized in that: The depth of the wear plate installation groove is less than or equal to the thickness of the longitudinal wear plate.

5. The traction pin according to any one of claims 1 to 4, characterized in that: One end of the pin main body is bifurcated into two pin connecting arms, each of which is connected to a vehicle body connecting part; a hollow area is formed between the two pin connecting arms.

6. The traction pin according to claim 5, characterized in that: The edge of the hollowing area is in a curved shape that is recessed toward the pin main body.

7. The traction pin according to claim 6, characterized in that: The hollowed-out areas on both sides of the pin body are symmetrically arranged and can be used as wire-passing channels, so that the cable passes through the hollowed-out areas from one side of the traction pin to the other side of the traction pin.

8. The traction pin according to claim 7, characterized in that: The cross-sectional area of ​​the pin body portion gradually increases along a direction from the frame stop portion toward the vehicle body connecting portion.

9. A bogie, characterized in that: include: A side beam, a cross beam and a traction pin as described in any one of claims 1 to 8; the cross beam is connected between two side beams, a center pin hole is provided in the cross beam, and a frame stopper in the traction pin is inserted into the center pin hole.

10. A rail vehicle, characterized in that: include: The bogie as claimed in claim 9.

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