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, when a truck is impacted or vibrated by a rail, due to the fact that the end, in the length direction, of the first side bearing body is connected with the top plate, a first vertical distance L1 exists between the end, away from the top plate, of the first side bearing body and the top plate, and a second vertical distance L2 exists between the end, away from the top plate, of the side plate and the top plate, and L2, so that the first side bearing body can generate controllable elastic deformation when the first side bearing body is subjected to pressure. The outer wall of the first side bearing body is sleeved with the spring, and one end in the length direction is connected with the top plate. When the truck is impacted or vibrated, the spring can generate elastic deformation to further absorb and buffer the impact and vibration, so that the compression deformation of the first side bearing body is effectively reduced. Excessive deformation of the first side bearing body in the compression process is avoided, and the service life of the elastomer is prolonged.

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] In order to obtain better high-speed running stability, railway freight cars basically use constant contact elastic side bearings. The elastic side bearings transmit the load from the car body, and the load they bear is related to their own stiffness and compression deflection, and has nothing to do with the empty and loaded car. Due to the effect of the load, the elastic side bearings will provide a certain amount of rotation resistance torque, inhibiting the relative rotation between the bogie and the car body, thereby improving the straight-line running stability.

[0003] Most of the existing elastic side bearings have poor vibration reduction effects, and the elastic body has a large compression deformation, is prone to aging and has a short lifespan, resulting in unstable performance when the vehicle is running. 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 effect, reduce the compression deformation of the elastic body, and increase the life of the elastic body.

[0005] In a first aspect, an embodiment of the present application provides an elastic side bearing of a railway freight car, comprising a side bearing cover, the side bearing cover comprising a top plate and side plates, the side plates being connected to the top plate and enclosing to form a accommodating chamber with an opening; a first side bearing body, at least a portion of the side bearing body being arranged in the accommodating chamber, one end of the first side bearing body being connected to the top plate along the length direction, an end of the first side bearing body facing away from the top plate having a first vertical distance L1 to the top plate, an end of the side plate facing away from the top plate having a second vertical distance L2 to the top plate, wherein L1>L2; and a spring, which is sleeved on the outer wall of the first side bearing body, one end of the spring along the length direction being connected to the top plate, and the length direction is the same as the extension and contraction direction of the spring.

[0006] According to the aforementioned embodiment of the first aspect of the present application, the end of the spring facing away from the top plate in the length direction has a third vertical distance L3 to the top plate, and L3>L2.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the elastic side bearing also includes a second side bearing body, which is arranged on the outer side wall of the side plate, and the end of the second side bearing body facing away from the top plate has a fourth vertical distance L4 to the top plate, L1>L4>L2.

[0008] The elastic side bearing as claimed in claim 1, the elastic side bearing also includes a protective cover and a side bearing seat, the protective cover is arranged on the outside of the second side bearing body, the side bearing seat includes a first groove, the side bearing cover is snap-fitted with the first groove, and the protective cover cooperates with the inner side wall of the first groove, wherein the cross-sectional area of ​​the first groove gradually increases from the bottom to the top plate.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the elastic side bearing also includes a roller, and the side bearing seat also includes a second groove, the second groove is spaced apart from the first groove, and the first groove and the second groove are located on the same side of the side bearing seat, the roller is rotatably installed in the second groove through a bearing, and the rotation axis of the roller is perpendicular to the length direction, wherein a fifth vertical distance L5 is present between an end of the roller facing away from the side bearing seat and a side of the top plate facing away from the side bearing seat, and L5>(L3-L4).

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the first side support body and the second side support body are both made of elastic material.

[0011] According to any of the aforementioned implementations of the first aspect of the present application, the first side support is a cylindrical side support or a conical side support.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the second side bearing body, the protective cover and the side panel are vulcanized into an integrated structure.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes a fixing plate, and the first side bearing body and the spring are both connected to the top plate via the fixing plate.

[0014] 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.

[0015] According to the elastic side bearing of the embodiment of the present application, when the truck is subjected to impact or vibration from the track, since the first side bearing body is connected to the top plate at one end along the length direction, the end of the first side bearing body away from the top plate has a first vertical distance L1 to the top plate, and the end of the side plate away from the top plate has a second vertical distance L2 to the top plate, wherein L1>L2, so that the first side bearing body can undergo controllable elastic deformation when subjected to pressure. The spring is sleeved on the outer wall of the first side bearing body and connected to the top plate at one end along the length direction. When the truck is subjected to impact or vibration, the spring will undergo elastic deformation, further absorbing and buffering these impacts and vibrations, thereby effectively reducing the compression deformation of the first side bearing body. At the same time, since the spring is sleeved on the outer wall of the first side bearing body, when the first side bearing body is subjected to pressure deformation, the creep amount of the first side bearing body in the radial direction of the spring can be reduced, avoiding excessive deformation of the first side bearing body during compression, and improving the life of the elastic body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic structural diagram of an elastic side bearing in one embodiment of the present invention.

[0018] Reference numerals:

[0019] 100-elastic side bearing; 10-side bearing cover; 11-top plate; 12-side plate; 20-first side bearing body; 30-spring; 40-second side bearing body; 50-protective cover; 60-side bearing seat; 61-first groove; 62-second groove; 70-roller; 80-fixed plate. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] In order to obtain better high-speed running stability, railway freight cars basically use constant contact elastic side bearings. The elastic side bearings transmit the load from the car body, and the load they bear is related to their own stiffness and compression deflection, and has nothing to do with the empty and loaded car. Due to the effect of the load, the elastic side bearings will provide a certain amount of rotation resistance torque, inhibiting the relative rotation between the bogie and the car body, thereby improving the straight-line running stability.

[0022] Most of the existing elastic side bearings have poor vibration reduction effects, and the elastic body has a large compression deformation, is prone to aging and has a short lifespan, resulting in unstable performance when the vehicle is running.

[0023] The present application provides an elastic side bearing of a railway freight car and a railway freight car, which can make the elastic side bearing have multi-level stiffness, reduce the compression deformation of the elastic body, and increase the life of the elastic body.

[0024] like Figure 1 As shown, in the first aspect, the embodiment of the present application provides an elastic side bearing 100 of a railway freight car, including a side bearing cover 10, the side bearing cover 10 including a top plate 11 and a side plate 12, the side plate 12 is connected to the top plate 11 and encloses a accommodating chamber with an opening; a first side bearing body 20, at least a portion of the side bearing body is arranged in the accommodating chamber, one end of the first side bearing body 20 along the length direction is connected to the top plate 11, the end of the first side bearing body 20 away from the top plate 11 has a first vertical distance L1 to the top plate 11, and the end of the side plate 12 away from the top plate 11 has a second vertical distance L2 to the top plate 11, wherein L1>L2; and a spring 30, which is sleeved on the outer wall of the first side bearing body 20, one end of the spring 30 along the length direction is connected to the top plate 11, and the length direction is the same as the extension and contraction direction of the spring 30.

[0025] It can be understood that the first side bearing body 20 is an elastomer. Specifically, the shape of the first side bearing body 20 can be cylindrical or conical. The spring 30 is sleeved on the outer wall of the first side bearing body 20. Specifically, the spring 30 and the first side bearing body 20 can have an interference fit or a clearance fit. The interference fit can be selected so that the spring 30 and the first side bearing body 20 will not slide relative to each other or separate when subjected to load, thereby improving the stability and reliability of the entire elastic side bearing 100.

[0026] It should be noted that the vertical distance from the end of the spring 30 away from the top plate 11 to the top plate 11 may be greater than or equal to the vertical distance from the end of the first side bearing 20 away from the top plate 11 to the top plate 11; or the vertical distance from the end of the spring 30 away from the top plate 11 to the top plate 11 may be less than the vertical distance from the end of the first side bearing 20 away from the top plate 11 to the top plate 11, which is not limited here. When the vertical distance from the end of the spring 30 away from the top plate 11 to the top plate 11 is greater than or equal to the vertical distance from the end of the first side bearing 20 away from the top plate 11 to the top plate 11, the first side bearing 20 is compressed and deformed first; when the vertical distance from the end of the spring 30 away from the top plate 11 to the top plate 11 is less than the vertical distance from the end of the first side bearing 20 away from the top plate 11 to the top plate 11, the spring 30 is compressed and deformed first. At least a portion of the first side bearing 20 is sleeved in the spring 30, which prevents excessive non-metallic elastic body from being exposed to the atmosphere and corroded by ultraviolet rays, ozone, etc., thereby improving the reliability of the long life of the side bearing.

[0027] There is a first vertical distance L1 between the end of the first side bearing 20 away from the top plate 11 and the top plate 11, and there is a second vertical distance L2 between the end of the side plate 12 away from the top plate 11 and the top plate 11, wherein L1>L2, so that when the elastic side bearing 100 is subjected to external loads, the first side bearing 20 will first deform to absorb these loads, thereby ensuring the smooth operation of the truck.

[0028] The spring 30, the first side bearing body 20 and the side bearing cover 10 are all detachably connected to facilitate assembly and maintenance.

[0029] According to the elastic side bearing 100 of the embodiment of the present application, when the truck is subjected to impact or vibration from the track, since the first side bearing body 20 is connected to the top plate 11 at one end along the length direction, the first side bearing body 20 has a first vertical distance L1 from the end away from the top plate 11 to the top plate 11, and the side plate 12 has a second vertical distance L2 from the end away from the top plate 11 to the top plate 11, wherein L1>L2, so that the first side bearing body 20 can undergo controllable elastic deformation when subjected to pressure. The spring 30 is sleeved on the outer wall of the first side bearing body 20 and connected to the top plate 11 at one end along the length direction. When the truck is subjected to impact or vibration, the spring 30 will undergo elastic deformation to further absorb and buffer these impacts and vibrations, thereby effectively reducing the compression deformation of the first side bearing body 20. At the same time, since the spring 30 is sleeved on the outer wall of the first side bearing 20, when the first side bearing 20 is deformed by pressure, the creep amount of the first side bearing 20 in the radial direction of the spring 30 can be reduced, thereby avoiding excessive deformation of the first side bearing 20 during compression and improving the life of the elastomer.

[0030] like Figure 1As shown, in some embodiments, the end of the spring 30 that is away from the top plate 11 in the length direction has a third vertical distance L3 to the top plate 11, and L3>L1.

[0031] In this embodiment, since L3 is greater than L2, when the elastic side bearing 100 is subjected to an external load, the spring 30 is first compressed to absorb and buffer part of the load. As the load continues to increase, the compression amount of the spring 30 gradually increases. When the spring 30 is compressed along the length direction to the stroke (L3-L1) when the spring 30 is compressed along the length direction, the first side bearing body 20 begins to participate in the deformation. At this time, the spring 30 and the first side bearing body 20 jointly bear the load until the first side bearing body 20 is also compressed (L1-L2). During the entire deformation process of the elastic side bearing 100, the spring 30 and the first side bearing body 20 make the elastic side bearing 100 have multi-level stiffness. The multi-level stiffness design enables the elastic side bearing 100 to deform to different degrees according to loads of different sizes, thereby improving the vibration reduction performance, enhancing the stability and extending the service life.

[0032] like Figure 1 As shown, in some embodiments, the elastic side bearing 100 further includes a second side bearing body 40, which is disposed on the outer side wall of the side plate 12, and an end of the second side bearing body 40 facing away from the top plate 11 has a fourth vertical distance L4 to the top plate 11, L1>L4>L2.

[0033] In this embodiment, since the end of the second side bearing 40 away from the top plate 11 has a fourth vertical distance L4 to the top plate 11, L1>L4>L2, so that when the elastic side bearing 100 is compressed, a gradient is formed between L2, L3, and L4, and the stiffness characteristics of the elastic side bearing 100 realize a smooth transition of multi-level stiffness. Under the action of the load, the spring 30 is first compressed, and then after being compressed by a stroke of (L3-L1), the first side bearing 20 begins to participate in the deformation, the spring 30 and the first side bearing 20 are compressed together (L1-L4), and then the second side bearing 40 is compressed until the second side bearing 40 is compressed by a stroke of (L4-L2), so that when the elastic side bearing 100 is subjected to the load, it can be deformed in a specific order and degree, thereby increasing the stroke of the elastic side bearing 100, more effectively absorbing and buffering vibration, and improving the running stability of the truck.

[0034] like Figure 1 As shown, in some embodiments, the elastic side bearing 100 further includes a protective cover 50 and a side bearing seat 60. The protective cover 50 is disposed on the outer side of the second side bearing body 40. The side bearing seat 60 includes a first groove 61, and the side bearing cover 10 is engaged with the first groove 61. The protective cover 50 is matched with the inner side wall of the first groove 61, wherein the cross-sectional area of ​​the first groove 61 gradually increases from the bottom to the top plate 11.

[0035] In this embodiment, the protective cover 50 is arranged on the outer side of the second side bearing 40, mainly for protection. The protective cover 50 can reduce the direct contact between the second side bearing 40 and the external environment, thereby reducing the wear caused by friction and extending the service life of the elastic side bearing 100. The outer wall of the protective cover 50 cooperates with the inner wall of the first groove 61. When the elastic side bearing 100 is subjected to a load, the protective cover 50 slides relative to the inner wall of the first groove 61. Since the cross-sectional area of ​​the first groove 61 gradually increases from the bottom to the top plate 11, that is, the side wall of the first groove 61 is inclined relative to the bottom of the first groove 61. During the relative sliding of the protective cover 50 relative to the inner wall of the first groove 61, the second side bearing 40 is compressed by the side wall of the first groove 61, so that the second side bearing 40 is locked laterally, avoiding the excessive lateral creep of the second side bearing 40.

[0036] like Figure 1 As shown, in some embodiments, the elastic side bearing 100 further includes a roller 70. The side bearing seat 60 further includes a second groove 62. The second groove 62 is spaced apart from the first groove 61, and the first groove 61 and the second groove 62 are located on the same side of the side bearing seat 60. The roller 70 is rotatably mounted in the second groove 62 through a bearing, and the rotation axis of the roller 70 is perpendicular to the length direction, wherein a fifth vertical distance L5 is provided between one end of the roller 70 away from the side bearing seat 60 and the side of the top plate 11 away from the side bearing seat 60, and L5>(L3-L4).

[0037] The second groove 62 and the first groove 61 are arranged on the side support seat 60 at intervals in the width direction, and in the thickness direction of the side support seat 60 , the first groove 61 and the second groove 62 are arranged on the same side of the side support seat 60 .

[0038] In this embodiment, when the elastic side bearing 100 is subjected to pressure, the spring 30, the first side bearing body 20 and the second side bearing body 40 are compressed. Since there is a fifth vertical distance L5 between the end of the roller 70 away from the side bearing seat 60 and the side of the top plate 11 away from the side bearing seat 60, L5>(L3-L4), the elastic side bearing 100 has a multi-level stiffness structure, wherein 0≤(L3-L1)<(L3-L4)<L5, three height differences are formed to match the different stress states of the elastic side bearing 100, thereby realizing the multi-level stiffness of the elastic side bearing 100. When the deformation of the first-stage spring 30 reaches (L3-L1), the first side bearing 20 participates in the work, and it is connected in parallel with the spring 30 to bear the load together; when the displacement reaches (L3-L4), the second side bearing 40 also participates in the work, and the three form a parallel structure to bear the external load; as the deformation continues to increase, when it reaches L5, the roller 70 plays a safety limit role. At the same time, it can easily achieve the optimal stress state of each bearing component, and a reasonable height difference can achieve a long stroke.

[0039] like Figure 1 As shown, in some embodiments, the first side support body 20 and the second side support body 40 are both made of elastic material.

[0040] In this embodiment, the first side support body 20 and the second side support body 40 may be elastic bodies made of rubber material, or may be elastic bodies made of plastic material, without any specific limitation.

[0041] like Figure 1 As shown, in some embodiments, the first side bearing 20 is a columnar side bearing or a conical side bearing, which can evenly distribute pressure when bearing loads, reduce local wear and deformation, and provide stable support and positioning.

[0042] like Figure 1 As shown, in some embodiments, the second side bearing body 40, the protective cover 50 and the side panel 12 are vulcanized into an integral structure.

[0043] In this embodiment, the second side bearing body 40, the protective cover 50 and the side plate 12 are vulcanized into an integrated structure, which enhances the strength and rigidity of the overall structure and simplifies the installation process.

[0044] like Figure 1 As shown, in some embodiments, the elastic side bearing 100 further includes a fixing plate 80. The first side bearing body 20 and the spring 30 are both connected to the top plate 11 through the fixing plate 80.

[0045] In this embodiment, the fixing plate 80 provides a solid support surface for the first side bearing body 20 and the spring 30. The first side bearing body 20 is connected to the fixing plate 80 by bolts, welding or other connection methods to ensure the tight connection and firmness between the first side bearing body 20 and the fixing plate 80. The spring 30 is connected to the fixing plate 80 by a spring 30 seat or other connecting parts, so that the spring 30 can freely expand and contract when subjected to pressure, thereby absorbing and dispersing the impact force.

[0046] The embodiment of the present application further provides a railway freight car, which includes the elastic side bearing 100 in any of the aforementioned embodiments, and thus has all the beneficial effects of the elastic side bearing 100, which will not be described in detail herein.

[0047] 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: A side bearing cover, the side bearing cover comprising a top plate and a side plate, the side plate being connected to the top plate and enclosing to form a receiving chamber with an opening; a first side support, at least part of which is disposed in the accommodating chamber, one end of the first side support along the length direction of which is connected to the top plate, a first vertical distance L1 being provided between the end of the first side support away from the top plate and the top plate, and a second vertical distance L2 being provided between the end of the side plate away from the top plate and the top plate, wherein L1>L2; as well as A spring is sleeved on the outer wall of the first side bearing body, one end of the spring along the length direction is connected to the top plate, and the length direction is the same as the expansion and contraction direction of the spring.

2. The elastic side bearing according to claim 1, characterized in that: The end of the spring in the length direction away from the top plate has a third vertical distance L3 from the top plate, and L3>L2.

3. The elastic side bearing according to claim 2, characterized in that: The elastic side bearing further includes a second side bearing body, which is disposed on the outer side wall of the side plate, and a fourth vertical distance L4 is formed between an end of the second side bearing body away from the top plate and the top plate, wherein L1>L4>L2.

4. The elastic side bearing according to claim 1, characterized in that: The elastic side bearing also includes a protective cover and a side bearing seat, the protective cover is arranged on the outer side of the second side bearing body, the side bearing seat includes a first groove, the side bearing cover is buckled with the first groove, and the protective cover cooperates with the inner side wall of the first groove, wherein the cross-sectional area of ​​the first groove gradually increases from the bottom to the top plate.

5. The elastic side bearing according to claim 4, characterized in that: The elastic side bearing also includes a roller, and the side bearing seat also includes a second groove, the second groove is spaced apart from the first groove, and the first groove and the second groove are located on the same side of the side bearing seat, the roller is rotatably mounted on the second groove through a bearing, and the rotation axis of the roller is perpendicular to the length direction, wherein a fifth vertical distance L5 is present between an end of the roller facing away from the side bearing seat and a side of the top plate facing away from the side bearing seat, and L5>(L3-L4).

6. The elastic side bearing according to claim 3, characterized in that: The first side support body and the second side support body are both made of elastic material.

7. The elastic side bearing according to claim 1, characterized in that: The first side support body is a columnar side support body or a conical side support body.

8. The elastic side bearing according to claim 4, characterized in that: The second side bearing body, the protective cover and the side plate are vulcanized into an integrated structure.

9. The elastic side bearing according to claim 1, characterized in that: It also includes a fixing plate, through which the first side bearing body and the spring are connected to the top plate.

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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