Elastic side bearing of railway wagon and railway wagon

Abstract

The invention relates to an elastic side bearing of a railway wagon and the railway wagon, and relates to the technical field of elastic side bearing equipment. According to the elastic side bearing of the railway wagon and the railway wagon, when the top plate bears the impact load generated between the wagon body and the bogie, the top plate transmits force to the elastic body assembly. Elastic deformation of the elastomer assembly can absorb part of impact energy. Meanwhile, the accommodating chamber is divided into the first chamber and the second chamber which are communicated with each other by the damping plate. At least part of the second cavity is located in the elastic body, so that when the elastic body deforms due to pressure load, the size of the second cavity is compressed and reduced, elastic cement in the second cavity flows from the second cavity to the first cavity under the action of pressure, damping force is generated in the flowing process of the elastic cement, and impact energy is further absorbed; the influence of loads on the vehicle structure is reduced, and meanwhile the vehicle running stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of elastic side bearing equipment, and in particular to an elastic side bearing of a railway freight car and the railway freight car. Background Art

[0002] The elastic side bearing is installed on the bogie of the railway vehicle to support the vehicle body. It can also improve the rotational constraint between the bogie and the vehicle body and the lateral rolling constraint of the vehicle body, inhibit the bogie's head shaking movement and the vehicle body's lateral rolling movement, and improve the vehicle's straight-line running stability performance.

[0003] In the related art, the elastic side bearing has a poor vibration reduction and energy absorption effect and cannot effectively absorb the impact load between the vehicle body and the bogie, which is not conducive to the stability of vehicle operation. Summary of the invention

[0004] The present application provides an elastic side bearing of a railway freight car and a railway freight car, which can improve the vibration reduction and energy absorption effect of the elastic side bearing, effectively absorb the impact load between the car body and the bogie, and thus improve the stability of vehicle operation.

[0005] In a first aspect, an embodiment of the present application provides an elastic side bearing of a railway freight car, comprising: a top plate for bearing the load of a car body; an elastomer assembly, a top end of the elastomer assembly is provided with a accommodating chamber with an opening, the top plate cover is arranged on the top end of the elastomer assembly, and the top plate covers the opening, the elastomer assembly comprises a cover plate and an elastomer, the opening is arranged on a side of the cover plate facing the top plate along its own thickness direction, and the accommodating chamber extends from the cover plate to the elastomer along the length direction of the elastomer assembly; and a damping plate, the damping plate is arranged inside the accommodating chamber, the damping plate divides the accommodating chamber along the length direction into a first chamber and a second chamber that are spaced apart and interconnected, at least a portion of the second chamber is located in the elastomer, and elastic putty is arranged in the second chamber.

[0006] According to the elastic side bearing of the railway freight car and the railway freight car of the embodiment of the present application, when the top plate is subjected to the impact load generated between the car body and the bogie, the top plate transfers the force to the elastomer assembly. The elastic deformation of the elastomer assembly can absorb part of the impact energy. At the same time, the damping plate divides the accommodating chamber into two interconnected first and second chambers. Since at least part of the second chamber is located in the elastomer, when the elastomer is deformed by the pressure load, the volume of the second chamber is compressed and reduced, so that the elastic putty in the second chamber flows from the second chamber to the first chamber under the action of pressure, and the elastic putty generates a damping force during the flow process, further absorbing the impact energy, reducing the influence of the load on the vehicle structure, and improving the stability of the vehicle operation.

[0007] According to the aforementioned implementation of the first aspect of the present application, at least a portion of the circumferential edge of the damping plate is threadedly connected to the inner wall of the cover plate.

[0008] In some embodiments, the threaded connection between the rotating damping plate and the cover plate can be used to achieve that at the same time, since the damping plate is threadedly connected to the inner wall of the cover plate, the first chamber separated is completely formed by the inner wall of the cover plate and the damping plate, and the volume of the first chamber is relatively stable and not easily affected by external factors (such as vibration, pressure changes, etc.). If it needs to be adjusted, it can be achieved by rotating the threaded connection between the damping plate and the cover plate. By adjusting the volume of the first chamber, the amount of elastic putty entering the first chamber after the second chamber receives the pressure load can be controlled, and then the vertical stiffness of the elastic side bearing and the damping size can be adjusted, so that the elastic side bearing can adapt to different working environments and performance requirements.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the damping plate includes a plurality of first through holes penetrating along a thickness direction, and the plurality of first through holes are evenly distributed along the circumference of the damping plate.

[0010] In some embodiments, the plurality of first through holes are distributed at uniform intervals along the circumference of the damping plate, thereby ensuring that the performance of the damping plate remains consistent in all directions and avoiding performance differences caused by uneven distribution of the first through holes.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the damping plate further includes a second through hole penetrating along the thickness direction, and the plurality of first through holes surround the second through hole.

[0012] In some embodiments, a throttling hole is provided to limit the flow rate of the elastic cement entering the first chamber from the second chamber through the first through hole and the pressure of the elastic cement entering the first chamber, thereby improving the overall performance of the damping plate.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, a limiting recess is provided on the side of the cover plate facing the top plate, and a limiting protrusion matching with the limiting recess is provided on the side of the top plate facing the cover plate.

[0014] In some embodiments, the limiting protrusion is inserted into the limiting recess to ensure the relative position between the cover plate and the top plate is stable, prevent misalignment or shaking caused by external force, and achieve stable connection and precise positioning between the cover plate and the top plate.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the elastomer assembly further includes a bottom plate, which is disposed at the bottom end of the elastomer.

[0016] In some embodiments, the bottom plate is disposed at the bottom end of the elastomer, and the bottom plate provides necessary support for the elastomer to prevent it from being excessively deformed or damaged when subjected to external force.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, a plurality of partitions are arranged inside the elastomer at intervals along the length direction, and the thickness direction of each partition is the same as the length direction.

[0018] In some embodiments, multiple partitions are spaced inside the elastomer along the length direction of the elastomer, which enhances the structural strength and stability of the elastomer, prevents the elastomer from being damaged by excessive creep when compressed, and enhances the durability and reliability of the elastomer.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the cover plate, the elastomer, the plurality of partitions and the bottom plate are formed into an integrated structure by vulcanization.

[0020] In some embodiments, the cover plate, the elastic body, the plurality of partitions and the bottom plate are vulcanized into an integrated structure to form an indivisible whole, so that the elastic side bearing has higher strength and stability, can better withstand external forces and environmental changes, improves overall strength, simplifies the assembly process, and reduces production costs. According to any of the aforementioned embodiments of the first aspect of the present application, the top plate and the cover plate are connected by a plurality of screws.

[0021] In some embodiments, the top plate and the cover plate are connected by screws to ensure a tight fit and stability between them. At the same time, the screw connection is convenient for disassembly and assembly, maintenance and replacement of parts.

[0022] In a second aspect, an embodiment of the present application further provides a railway freight car, comprising the elastic side bearing in any of the aforementioned embodiments of the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0024] Figure 1 is a structural schematic diagram of an elastic side bearing from one viewing angle in one embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the elastic side bearing from another perspective in one embodiment of the present invention.

[0026] Reference numerals:

[0027] 1000-elastic side bearing;

[0028] 100-top plate; 111-top plate; 112-side plate;

[0029] 200-elastic body assembly; 210-accommodating chamber; 211-first chamber; 212-second chamber; 220-cover plate; 230-elastic body; 240-bottom plate; 250-partition plate;

[0030] 300-damping plate; 310-first through hole; 320-second through hole;

[0031] 400-side elastic part; 500-side baffle; 600-wear plate. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] The elastic side bearing is installed on the bogie of the railway vehicle to support the vehicle body. It can also improve the rotational constraint between the bogie and the vehicle body and the lateral rolling constraint of the vehicle body, inhibit the bogie's head shaking movement and the vehicle body's lateral rolling movement, and improve the vehicle's straight-line running stability performance.

[0034] In the related art, elastic side bearings may exceed the technical requirements due to certain factors (such as fluctuations in rubber materials, metal parts processing errors, etc.) during the production process, resulting in unqualified products. At the same time, some elastic side bearings have low longitudinal damping and cannot effectively absorb the impact between the car body and the bogie. The elastic side bearings have poor vibration reduction and energy absorption effects and cannot effectively absorb the impact load between the car body and the bogie, which is not conducive to the stability of vehicle operation.

[0035] The present application provides an elastic side bearing of a railway freight car and a railway freight car, which can improve the vibration reduction and energy absorption effect of the elastic side bearing, effectively absorb the impact load between the car body and the bogie, and thus improve the stability of vehicle operation.

[0036] Figure 1 1 is a schematic diagram of the structure of an elastic side bearing from one perspective in one embodiment of the present invention. Figure 1 As shown, an embodiment of the present application provides an elastic side bearing 1000 of a railway freight car, and the elastic side bearing 1000 includes a top plate 100, an elastomer assembly 200, and a damping plate 300. The top plate 100 is used to bear the load of the vehicle body. A receiving chamber 210 with an opening is provided at the top of the elastomer assembly 200. The top plate 100 is covered on the top of the elastomer assembly 200, and the top plate 100 covers the opening. The elastomer assembly 200 includes a cover plate 220 and an elastomer 230. The opening is provided on one side of the cover plate 220 facing the top plate 100 along its thickness direction, and the receiving chamber 210 extends from the cover plate 220 to the elastomer 230 along the length direction of the elastomer assembly 200. The damping plate 300 is provided in the receiving chamber 210, and the damping plate 300 divides the receiving chamber 210 into a first chamber 211 and a second chamber 212 that are spaced apart and interconnected along the length direction. At least a portion of the second chamber 212 is located in the elastic body 230 , and elastic putty is disposed in the second chamber 212 .

[0037] It should be noted that the elastomer 230 may be an elastic element such as rubber or polyester elastomer 230 . The specific shape of the elastomer 230 may be a rectangle, a prism or a cylinder, and is not limited thereto. The elastomer 230 may be a columnar shape.

[0038] It is understandable that the volume of the first chamber 211 is greater than the volume of the second chamber 212, and can also be less than or equal to the volume of the second chamber 212, as long as the elastic putty in the second chamber 212 can enter the first chamber 211 through the damping plate 300, the damping force can be generated during the flow of the elastic putty, and the load borne by the elastic side bearing 1000 can be absorbed. In this embodiment, the volume of the second chamber 212 can be greater than or equal to the volume of the second chamber 212, so that at least part of the elastic putty in the second chamber 212 can completely fill the first chamber 211.

[0039] According to the elastic side bearing 1000 of the railway freight car and the railway freight car of the embodiment of the present application, when the top plate 100 is subjected to the impact load generated between the car body and the bogie, the top plate 100 transmits the force to the elastomer assembly 200. The elastic deformation of the elastomer assembly 200 can absorb part of the impact energy. At the same time, the damping plate 300 separates the accommodating chamber 210 into two interconnected first chambers 211 and second chambers 212. Since at least part of the second chamber 212 is located in the elastomer 230, when the elastomer 230 is deformed by the pressure load, the volume of the second chamber 212 is compressed and reduced, so that the elastic putty in the second chamber 212 flows from the second chamber 212 to the first chamber 211 under the action of pressure, and the elastic putty generates damping force during the flow process, further absorbing the impact energy, reducing the influence of the load on the vehicle structure, and improving the stability of the vehicle operation.

[0040] In some optional embodiments, the top plate 100 includes a top plate 111 and two side plates 112, the two side plates 112 are symmetrically arranged at both ends of the top plate 111 along the length direction, wherein the thickness direction of the top plate 111 and the thickness direction of the side plates 112 are perpendicular to each other, and the top plate 111 and the two side plates 112 enclose a groove-shaped structure. The top plate 100 is buckled on the elastic body 230, so that at least part of the elastic body 230 is accommodated in the groove formed by the top plate 100, wherein the top plate 111 is in contact with the elastic body 230, and when the top plate 111 receives a load from the vehicle body, the load is transferred to the elastic body 230, so that the elastic body 230 is deformed under the pressure.

[0041] The two side panels 112 of the top plate 100 are arranged on the opposite sides of the plate surfaces with side elastic members 400 and side baffles 500 in sequence, wherein the side elastic members 400 are arranged between the side baffles 500 and the side rods, wherein the outer wall of the side panel 112 forms a preset angle in its own length direction, so that when the top plate 100 is subjected to pressure, the side panel 112 can compress the side elastic members 400 of the outer wall, and due to the elasticity of the side elastic body 230, the baffle will be pushed toward the side wall of the elastic side bearing 1000, thereby realizing the longitudinal locking of the elastic side bearing 1000, thereby greatly reducing the workload of installing and disassembling the side bearings, and effectively reducing the manufacturing and maintenance costs of the vehicle.

[0042] At the same time, the side elastic member 400, the elastomer 230 of the elastomer assembly 200 and the elastic cement make the stiffness of the elastic side bearing 1000 have a multi-level adjustment function, thereby enhancing the ability of vibration reduction and energy absorption, reducing the impact between the car body and the bogie, and improving the vehicle operation quality.

[0043] In some optional embodiments, a wear plate 600 is further provided on the side of the top panel 111 of the top plate 100 facing away from the elastic component. The wear plate 600 covers the top panel 111. The wear plate 600 is provided with a plurality of installation positioning holes. A positioning pin is provided on the top panel 111. The wear plate 600 is connected to the top panel 111 as a whole through the interference connection between the installation positioning holes and the positioning pins.

[0044] The main function of the wear plate 600 is to reduce direct contact and wear between the top plate 100 and the vehicle body, thereby extending the service life of the top plate 100. The wear plate 600 is tightly connected to the top plate 111 by inserting the positioning pin into the installation positioning hole, which is simple and reliable, and is easy to disassemble and replace.

[0045] In some optional embodiments, the elastic side bearing 1000 further includes a side bearing box, which is a groove structure with an opening, and at least part of the elastic body component 200 is accommodated in the side bearing box. After the top plate 100 is buckled on the top of the elastic body component 200, the outer wall of the side plate 112 of the top plate 100 is arranged opposite to the inner wall of the side bearing box, wherein a gap is left between the two side plates 112 and the inner wall of the side bearing box, so that the total stroke of the side bearing can limit the lateral rolling movement of the vehicle body and prevent the vehicle from rolling over; and the side elastic body 230 can be prevented from being damaged by excessive compression. At the same time, due to the clearance fit between the top plate 100 and the side bearing box, the side bearing box and the top plate 100 are also easy to install and disassemble.

[0046] like Figure 1 As shown, in some embodiments, at least a portion of the circumferential edge of the damping plate 300 is threadedly connected to the inner wall of the cover plate 220 .

[0047] In this embodiment, a portion of the circumferential edge of the damping plate 300 may be threadedly connected to the inner wall of the cover plate 220, or the entire portion may be threadedly connected to the inner portion of the cover plate 220. When a portion of the circumferential edge of the damping plate 300 is threadedly connected to the cover plate 220, the first chamber 211 and the second chamber 212 are connected through the position where the circumferential edge of the damping plate 300 is not connected to the cover plate 220. When the circumferential edge of the damping plate 300 is completely threadedly connected to the inner wall of the cover plate 220, one or more through holes may be provided on the damping plate 300 to allow the first chamber 211 and the second chamber 212 to communicate.

[0048] At the same time, since the damping plate 300 is threadedly connected to the inner wall of the cover plate 220, the first chamber 211 is completely formed by the inner wall of the cover plate 220 and the damping plate 300, and the volume of the first chamber 211 is relatively stable and is not easily affected by external factors (such as vibration, pressure changes, etc.). If it needs to be adjusted, it can be achieved by rotating the threaded connection between the damping plate 300 and the cover plate 220. By adjusting the volume of the first chamber 211, the amount of elastic putty entering the first chamber 211 after the second chamber 212 receives the pressure load can be controlled, and then the vertical stiffness of the elastic side bearing 1000 and the damping size can be adjusted, so that the elastic side bearing 1000 can adapt to different working environments and performance requirements.

[0049] like Figure 1-2 As shown, in some embodiments, the damping plate 300 includes a plurality of first through holes 310 penetrating along a thickness direction, and the plurality of first through holes 310 are evenly distributed along the circumference of the damping plate 300 .

[0050] In this embodiment, the circumferential edge of the damping plate 300 is completely connected to the inner wall of the cover plate 220, and a plurality of first through holes 310 are evenly distributed along the circumference of the damping plate 300, ensuring that the performance of the damping plate 300 in all directions remains consistent, and avoiding performance differences caused by uneven distribution of through holes. When the elastic side bearing 1000 is deformed by pressure, the volume of the second chamber 212 changes, causing the elastic glue to flow from the first through hole 310 into the second chamber, absorbing the impact load during the flow process. At the same time, the vertical stiffness and damping size of the elastic side bearing 1000 can be adjusted by adjusting the aperture size, number and distribution of the first through holes 310.

[0051] like Figure 1-2 As shown, in some embodiments, the damping plate 300 further includes a second through hole 320 penetrating along the thickness direction, and a plurality of first through holes 310 surround the second through hole 320 .

[0052] In this embodiment, the second through hole 320 is a throttling hole. By setting the throttling hole to limit the flow rate of the elastic glue entering the first chamber 211 from the second chamber 212 through the first through hole 310 and the pressure of the elastic glue entering the first chamber 211, the overall performance of the damping plate 300 is improved.

[0053] In some optional embodiments, a one-way valve for unidirectionally conducting the second chamber 212 toward the first chamber 211 may be provided at the throttling hole. When the pressure of the elastic putty in the second chamber 212 reaches a preset pressure, the one-way valve opens, allowing the elastic putty in the second chamber 212 to enter the first chamber 211 through the second through hole 320. By adjusting the opening pressure of the one-way valve and the aperture size of the throttling hole, the performance of the damping plate 300 can be precisely adjusted, the vertical stiffness of the elastic side bearing 1000 can be precisely controlled, and the performance and stability of the overall structure can be improved.

[0054] like Figure 1 As shown, in some embodiments, a limiting recess is provided on the side of the cover plate 220 facing the top plate 100 , and a limiting protrusion matching the limiting recess is provided on the side of the top plate 100 facing the cover plate 220 .

[0055] In this embodiment, when the cover plate 220 and the top plate 100 are connected to each other, the limiting protrusion will be inserted into the limiting recess, ensuring the stability of the relative position between the cover plate 220 and the top plate 100, preventing misalignment or shaking caused by external force, and achieving stable connection and precise positioning between the cover plate 220 and the top plate 100.

[0056] like Figure 1 As shown, in some embodiments, the elastomer assembly 200 further includes a bottom plate 240 , which is disposed at the bottom end of the elastomer 230 .

[0057] In this embodiment, the base plate 240 is disposed at the bottom end of the elastomer 230. The base plate 240 provides necessary support for the elastomer 230 to prevent it from being excessively deformed or damaged when subjected to external force, thereby ensuring that the elastomer 230 maintains its performance and shape stability during long-term use.

[0058] like Figure 1 As shown, in some embodiments, a plurality of baffles 250 are arranged at intervals along the length direction inside the elastic body 230, and the thickness direction of each baffle 250 is the same as the length direction. In this embodiment, the plurality of baffles 250 arranged at intervals along the length direction inside the elastic body 230 enhance the structural strength and stability of the elastic body 230, prevent the elastic body 230 from being damaged by excessive creep when being compressed, and enhance the durability and reliability of the elastic body 230.

[0059] like Figure 1As shown, in some embodiments, the cover plate 220, the elastic body 230, the plurality of baffles 250 and the bottom plate 240 are vulcanized to form an integrated structure. In this embodiment, the cover plate 220, the elastic body 230, the plurality of baffles 250 and the bottom plate 240 are vulcanized to form an integrated structure to form an inseparable whole, thereby making the elastic side bearing 1000 have higher strength and stability, can better withstand external forces and environmental changes, and improve the stability of vehicle operation. At the same time, the integrated structure not only improves the overall strength, but also simplifies the assembly process and reduces production costs.

[0060] In some embodiments, the top plate 100 and the cover plate 220 are connected by a plurality of screws.

[0061] In this embodiment, the top plate 100 and the cover plate 220 are connected by screws, which can ensure a close fit and stability between them. At the same time, the screw connection is convenient for disassembly and assembly, maintenance and replacement of parts.

[0062] The embodiment of the present application further provides a railway freight car, which includes the elastic side bearing 1000 in any of the aforementioned embodiments, and thus has all the beneficial effects of the elastic side bearing 1000, which will not be described in detail herein.

[0063] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An elastic side bearing for a railway freight car, characterized in that: include: The top plate is used to bear the load of the vehicle body; An elastic body component, wherein a receiving chamber having an opening is disposed at the top of the elastic body component, the top plate cover is disposed at the top of the elastic body component, and the top plate covers the opening, the elastic body component comprises a cover plate and an elastic body, the opening is disposed at a side of the cover plate facing the top plate along the thickness direction of the cover plate, and the receiving chamber extends from the cover plate to the elastic body along the length direction of the elastic body component; as well as A damping plate is arranged inside the accommodating chamber, and the damping plate divides the accommodating chamber into a first chamber and a second chamber which are spaced apart and interconnected along the length direction, at least a portion of the second chamber is located in the elastomer, and elastic putty is arranged in the second chamber.

2. The elastic side bearing according to claim 1, characterized in that: At least a portion of the circumferential edge of the damping plate is threadedly connected to the inner wall of the cover plate.

3. The elastic side bearing according to claim 1 or 2, characterized in that: The damping plate includes a plurality of first through holes penetrating along a thickness direction, and the plurality of first through holes are evenly distributed along a circumferential direction of the damping plate.

4. The elastic side bearing according to claim 3, characterized in that: The damping plate further includes a second through hole penetrating in a thickness direction, and a plurality of the through holes surround the second through hole.

5. The elastic side bearing according to claim 2, characterized in that: A limiting concave portion is arranged on one side of the cover plate facing the top plate, and a limiting convex portion matched with the limiting concave portion is arranged on one side of the top plate facing the cover plate.

6. The elastic side bearing according to claim 2, characterized in that: The elastic body component also includes a bottom plate, and the bottom plate is arranged at the bottom end of the elastic body.

7. The elastic side bearing according to claim 6, characterized in that: A plurality of partitions are arranged inside the elastic body at intervals along the length direction, and the thickness direction of each partition is the same as the length direction.

8. The elastic side bearing according to claim 7, characterized in that: The cover plate, the elastomer, the plurality of partitions and the bottom plate are vulcanized to form an integrated structure.

9. The elastic side bearing according to claim 2, characterized in that: The top plate and the cover plate are connected by a plurality of screws.

10. A railway freight car, characterized in that: Comprising an elastic side bearing as described in any one of claims 1-9.

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