Railway freight car bogie flexible frame and railway freight car

Abstract

The present invention discloses a flexible frame of a railway freight car bogie and a railway freight car. It comprises: an L-shaped beam, which comprises an end beam and a side beam A; the side beam A is provided with an L-shaped beam mounting hole; the bottom of the L-shaped beam mounting hole is provided with a first spherical center plate; a T-shaped beam, which comprises a side beam B and a cross beam; the end of the cross beam away from the side beam B is provided with a T-shaped beam mounting seat, and the T-shaped beam mounting seat is configured to be inserted into the L-shaped beam mounting hole; the upper surface of the T-shaped beam mounting seat is provided with an elastic pad; the lower surface of the T-shaped beam mounting seat is provided with a second spherical center plate, and the second spherical center plate is configured to match the first spherical center plate; a connecting member, which comprises a connecting bolt, an elastic ball joint and a connecting seat; the connecting member is used to elastically connect the L-shaped beam and the T-shaped beam. The flexible frame of the present invention can make the two side beams relatively independent in three directions.

Description

Technical Field

[0001] The invention relates to a railway freight car bogie frame and a railway freight car, and in particular to a railway freight car bogie flexible frame and a railway freight car. Background Art

[0002] At present, the world's railway vehicle freight car bogies mainly include two structural types: three-piece type and integrally welded type. Among them, the frame is the foundation of the bogie, which integrates the various parts of the bogie into a whole. The frame mainly plays the role of bearing and transmitting various forces and loads, and its structural dimensions meet the structural, shape and assembly requirements of various parts.

[0003] The traditional three-piece bogie frame is freely connected by the side frame and the bolster through the central suspension spring. It has the characteristics of simple structure, low cost, large load-bearing capacity, adaptability to complex lines and low operating speed, but the structure is loose and cannot adapt to high-speed vehicle operation, and the diamond deformation is large. The integrally welded bogie frame is a rigid integrated structure with the characteristics of no diamond deformation, light weight and high operating speed, but the frame is subjected to complex forces during vehicle operation, it is difficult to ensure lateral stability, and has high requirements for line conditions.

[0004] At present, the development of railway freight is based on "high speed and heavy load", and the performance requirements for freight car bogies are getting higher and higher. As a key component of the bogie, the frame plays a decisive role in its performance. Both the traditional three-piece frame and the integral welded frame have certain limitations in optimizing the performance of the bogie. Therefore, it is necessary to provide a flexible frame for railway freight car bogies, which can take into account the advantages of the traditional three-piece frame and the integral welded frame, improve the operating performance and quality of the freight car bogie, and meet the "high speed and heavy load" requirements. Summary of the invention

[0005] One object of the present invention is to provide a flexible frame of a railway freight car bogie, which can make the two side beams (side beam A and side beam B) relatively independent in three directions, so as to better adapt to uneven road conditions. Furthermore, the flexible frame of the railway freight car bogie of the present invention takes into account the advantages of the traditional three-piece frame in terms of heavy load and strong ability to adapt to complex lines, as well as the advantages of the integral welded frame in terms of strong anti-diamond deformation ability and suitability for high-speed operation, so as to meet the "high speed, heavy load" requirements. Another object of the present invention is to provide a railway freight car.

[0006] The present invention adopts the following technical solutions to achieve the above-mentioned purpose.

[0007] The present invention provides a railway freight car bogie flexible frame, comprising:

[0008] The L-shaped beam comprises an end beam and a side beam A; the side beam A is fixedly connected to the end beam, and the angle between the two is 90 degrees; the side beam A is provided with an L-shaped beam mounting hole; the bottom surface of the L-shaped beam mounting hole is provided with a first spherical center plate;

[0009] A T-beam, comprising a side beam B and a cross beam; the cross beam is arranged on one side of the side beam B and is perpendicular to the side beam B; a T-beam mounting seat is arranged at one end of the cross beam away from the side beam B, and the T-beam mounting seat is arranged to be inserted into the L-beam mounting hole; an elastic pad is arranged on the upper surface of the T-beam mounting seat; a second spherical center disk is arranged on the lower surface of the T-beam mounting seat, and the second spherical center disk is arranged to be matched with the first spherical center disk;

[0010] A connecting component, comprising a connecting bolt, an elastic ball joint and a connecting seat; the connecting seat comprises a base plate and a vertical plate; the vertical plate is arranged to be perpendicular to the base plate, and the vertical plate is provided with a vertical plate through hole; the elastic ball joint is arranged to be able to be inserted into the vertical plate through hole; the connecting bolt is arranged to be able to pass through the elastic ball joint and be fixedly connected to one end of the end beam away from the side beam A; the base plate is arranged to be able to be fixedly connected to the side beam B.

[0011] In the present invention, the end beam and the side beam A are welded at right angles to form a rigid whole. The middle portion of the side beam B and one end of the cross beam are welded at right angles to form a rigid whole.

[0012] In the present invention, the connecting bolt and the elastic ball joint are used as the core components of the connecting member, and as the first flexible body to realize the elastic connection between the L-beam and the T-beam; the second spherical center plate is placed in the first spherical center plate, and the upper surface of the T-beam mounting seat is provided with an elastic pad (a spherical, conical or elliptical overlapping structure) as the second flexible body, which can limit the movement space of the side beam B and the cross beam. Thereby, the flexible frame has good flexibility. Thereby, the bogie flexible frame can meet the requirements of adapting to complex lines, strong anti-diamond ability, high operating speed, and adapting to different axle weights, and can take into account the critical operating speed of the vehicle's straight-line snaking and the performance of the vehicle's curved operation.

[0013] According to the flexible frame of the railway freight car bogie of the present invention, preferably, the flexible frame of the railway freight car bogie also includes a transition washer, a gasket and a wear pad, the transition washer and the gasket are arranged between the vertical plate and the end beam, the connecting bolt passes through the elastic ball joint, the transition washer and the gasket in sequence and is fixedly connected to the end of the end beam away from the side beam A; the wear pad is arranged between the second spherical center disk and the first spherical center disk.

[0014] In some embodiments, the connecting member also includes a transition washer and a gasket, which are arranged between the vertical plate and the end beam, and the connecting bolt passes through the elastic ball joint, the transition washer and the gasket in sequence, and is fixedly connected to one end of the end beam away from the side beam A.

[0015] In some embodiments, a wear pad is disposed between the second spherical center disk and the first spherical center disk. The second spherical center disk is installed with the wear pad and placed inside the first spherical center disk.

[0016] According to a specific embodiment of the present invention, the connecting bolt can pass through the elastic ball joint, the transition washer, the gasket and the L-shaped beam connecting plate in sequence and be fixedly connected with the nut, thereby connecting the connecting member and the L-shaped beam connecting plate together. This is conducive to improving the flexibility of the flexible frame.

[0017] According to the flexible frame of the railway freight car bogie of the present invention, preferably, the flexible frame of the railway freight car bogie also includes an L-shaped beam connecting plate, and the L-shaped beam connecting plate is arranged in parallel on the end face of the end beam away from the side beam A, and the L-shaped beam connecting plate is provided with an L-shaped beam connecting hole for the connecting bolt to pass through. The upper surface of the side beam A and the upper surface of the end beam may not be on the same plane. In the present invention, the central axis of the L-shaped beam connecting hole is located above the horizontal plane where the upper surface of the end beam is located. The upper surface of the side beam A and the upper surface of the side beam B are on the same plane. In this way, the connecting bolt can be better connected with the elastic ball joint by interference fit, which is conducive to the transmission of force between the side beam B and the cross beam.

[0018] According to the flexible frame of the railway freight car bogie of the present invention, preferably, the flexible frame of the railway freight car bogie also includes a T-beam connecting plate, and the T-beam connecting plate is arranged in parallel on one end face of the side beam B; the T-beam connecting plate is provided with a T-beam connecting hole; the bottom plate of the connecting member is provided with a bottom plate through hole; the T-beam connecting hole and the bottom plate through hole are arranged to allow bolts to pass through, thereby connecting the T-beam connecting plate and the bottom plate together.

[0019] According to the flexible frame of the railway freight car bogie of the present invention, preferably, the upper surface of the T-beam mounting seat is provided with an elastic pad mounting hole; the elastic pad is connected to the T-beam mounting seat through the elastic pad mounting hole. In the present invention, the elastic pad can be arranged on the elastic pad mounting hole by bolts or rivets. The elastic mounting pad can limit the spatial movement of the T-beam mounting seat in the L-beam mounting hole.

[0020] In the present invention, the cross section of the bottom plate is close to a triangular structure; the end of the vertical plate away from the bottom plate is an arc structure; the end of the T-beam connecting plate away from the upper surface of the side beam B is an arc structure.

[0021] According to the flexible frame of the railway freight car bogie of the present invention, preferably, the elastic ball joint includes a rigid outer ring and a special-shaped rigid inner ring, the rigid outer ring is sleeved outside the special-shaped rigid inner ring, and the rigid outer ring and the special-shaped rigid inner ring are vulcanized into one piece through a vulcanized rubber layer. According to the flexible frame of the railway freight car bogie of the present invention, preferably, the connecting bolt is a special-shaped connecting bolt with a variable cross-section; the middle part of the special-shaped rigid inner ring is in an arc shape that bulges outwards. In the present invention, the elastic ball joint is a joint-like flexible body, which is formed into an integral structure by a special-shaped rigid inner ring, a rigid outer ring and a vulcanized rubber layer. The special-shaped rigid inner ring can be a spherical or conical structure, and the rigid outer ring can be a circular, conical or elliptical structure. According to one embodiment of the present invention, the rigid outer ring is circular, and the middle part of the special-shaped rigid inner ring is in an arc shape that bulges outwards. This is conducive to improving the flexibility of the flexible frame.

[0022] According to the flexible frame of the railway freight car bogie of the present invention, preferably, the inner edges of the upper surfaces of the side beams A and B are respectively provided with multiple groups of brake mounting hangers, or the inner edges of the lower surfaces of the side beams A and B are respectively provided with multiple groups of brake mounting hangers. In certain embodiments, the inner edges of the upper surfaces of the side beams A and B are respectively provided with multiple groups of brake mounting hangers, and some groups of brake mounting hangers are located near the mounting holes of the L-shaped beams, and other groups of brake mounting hangers are located near the connection between the cross beam and the side beam B. In the present invention, the brake mounting hangers are used to install the brake device to meet the braking needs.

[0023] According to the flexible frame of the railway freight car bogie of the present invention, preferably, the flexible frame of the railway freight car bogie also includes elastic side bearings, a lower center plate and a fulcrum seat; the elastic side bearings are a pair, respectively arranged at both ends of the crossbeam; the lower center plate is arranged in the middle of the crossbeam; the fulcrum seat is arranged on one side of the middle of the crossbeam.

[0024] In the present invention, a plurality of side bearing holes are respectively provided on both sides of the cross beam along a direction perpendicular to the side beam B. The elastic side bearing is connected to the side beam B through the side bearing holes. The elastic side bearing can be box-type, roller-type, spring-type or other types. A lower center plate hole is provided in the middle of the cross beam. The lower center plate is connected to the cross beam through the center plate hole. The angle between the fulcrum seat and the cross beam is greater than or equal to 90 degrees. In some embodiments, the angle between the fulcrum seat and the cross beam is 90 degrees. In other embodiments, the angle between the fulcrum seat and the cross beam is greater than 90 degrees.

[0025] The present invention also provides a railway freight car, which comprises the above-mentioned railway freight car bogie flexible frame.

[0026] The flexible frame of the railway freight car bogie of the present invention can make the two side beams (side beam A and side beam B) relatively independent in three directions, so that it can better adapt to uneven road conditions, and can take into account the advantages of the traditional three-piece frame in terms of heavy load and strong ability to adapt to complex lines and the advantages of the welded one-piece frame in terms of strong resistance to diamond deformation and suitability for high-speed operation, and can meet the "high speed and heavy load" requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a schematic structural diagram of a flexible frame of a railway freight car bogie.

[0028] Figure 2 The figure is a schematic diagram of an L-shaped beam of a flexible frame of a railway freight car bogie according to the present invention.

[0029] Figure 3 The diagram is an exploded view of a connecting member of a flexible frame of a railway freight car bogie according to the present invention.

[0030] Figure 4 The present invention is a schematic longitudinal section of an elastic ball joint of a flexible frame of a railway freight car bogie.

[0031] Figure 5 The present invention is a schematic diagram of a T-beam of a flexible frame of a railway freight car bogie.

[0032] The following are the descriptions of the reference numerals:

[0033] 100-L-beam; 110-end beam; 111-L-beam connecting plate; 120-side beam A; 121-L-beam mounting hole; 122-first spherical center plate; 200-T-beam; 210-side beam B; 211-T-beam connecting plate; 220-crossbeam; 221-T-beam mounting seat; 222-second spherical center plate; 21-elastic pad mounting hole; 22-elastic pad; 23-wear pad; 24-lower center plate hole; 25-side bearing hole; 300-connecting member; 310-connecting bolt; 320-elastic ball joint; 321-rigid outer ring; 322-special-shaped rigid inner ring; 323-vulcanized rubber layer; 330-connecting seat; 31-bottom plate; 32-vertical plate; 340-nut; 350-transition washer; 360-gasket; 70-brake mounting hanger; 400-elastic side bearing; 500-lower center plate; 600-fulcrum seat. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0035] Example 1

[0036] Figure 1The present invention is a schematic structural diagram of a flexible frame of a railway freight car bogie. Figure 2 The figure is a schematic diagram of an L-shaped beam of a flexible frame of a railway freight car bogie according to the present invention. Figure 5 The present invention is a schematic diagram of a T-beam of a flexible frame of a railway freight car bogie.

[0037] The flexible frame of the railway freight car bogie of the present embodiment includes an L-shaped beam 100 , a T-shaped beam 200 , a connecting member 300 , an elastic side bearing 400 , a lower center plate 500 and a fulcrum seat 600 .

[0038] like Figure 1 and Figure 2 As shown, the L-shaped beam 100 includes an end beam 110 and a side beam A 120. The side beam A 120 and the end beam 110 are fixedly connected, and the angle between the two is 90 degrees. An L-shaped beam connecting plate 111 is provided at one end of the end beam 110 away from the side beam A 120. The L-shaped beam connecting plate 111 is arranged parallel to the end surface of the end beam 110 away from the side beam A 120. An L-shaped beam mounting hole 121 is arranged in the middle of the side beam A 120. A first spherical center plate 122 is arranged on the bottom surface of the L-shaped beam mounting hole 121.

[0039] like Figure 1 and Figure 5 As shown, the T-beam 200 includes a side beam B 210 and a cross beam 220. The cross beam 220 is arranged on one side of the side beam B 210 and is perpendicular to the side beam B 210. A T-beam mounting seat 221 is arranged at one end of the cross beam 220 away from the side beam B 210, and the T-beam mounting seat 221 is arranged to be inserted into the L-beam mounting hole 121. An elastic pad mounting hole 21 is arranged on the upper surface of the T-beam mounting seat 221. The elastic pad 22 is fixed to the elastic pad mounting hole 21 by bolts. A second spherical center disk 222 is arranged on the lower surface of the T-beam mounting seat 221, and the second spherical center disk 222 matches the first spherical center disk 122. A wear pad 23 is arranged between the second spherical center disk 222 and the first spherical center disk 122. A T-beam connecting plate 211 is arranged at one end of the side beam B 210. The T-beam connecting plate 211 is arranged parallel to one end surface of the side beam B 210. The T-beam connecting plate 211 is fixedly connected to the L-beam connecting plate 111 through a connecting member 300.

[0040] like Figure 1 and Figure 3As shown, the connecting member 300 includes a connecting bolt 310, an elastic ball joint 320, a connecting seat 330, a nut 340, a transition washer 350 and a gasket 360. The connecting seat 330 includes a bottom plate 31 and a vertical plate 32. The vertical plate 32 is arranged to be perpendicular to the bottom plate 31. The vertical plate 32 is provided with a vertical plate through hole. The elastic ball joint 320 is arranged to be inserted into the vertical plate through hole. The transition washer 350 and the gasket 360 are arranged between the vertical plate 32 and the L-beam connecting plate 111. The connecting bolt 310 is a variable-section special-shaped connecting bolt, which is arranged to be able to pass through the elastic ball joint 320, the transition washer 350, the gasket 360 in sequence and be fixedly connected to the L-beam connecting plate 111 through the nut 340, thereby connecting the connecting member 300 and the L-beam connecting plate 111 together. The bottom plate 31 is fixedly connected to the T-beam connecting plate 211. In this embodiment, the L-beam connecting plate 111 is provided with an L-beam connecting hole for passing the connecting bolt 310. The T-beam connecting plate 211 is provided with a plurality of T-beam connecting holes. The bottom plate 31 of the connecting member 300 is provided with a plurality of bottom plate through holes. The plurality of T-beam connecting holes and the plurality of bottom plate through holes are provided so as to allow bolts to pass through, thereby connecting the T-beam connecting plate 211 and the bottom plate 31 together.

[0041] In this embodiment, the cross section of the bottom plate 31 is close to a triangular structure. The end of the vertical plate 32 away from the bottom plate 31 is an arc-shaped structure. The end of the T-beam connecting plate 211 away from the upper surface of the side beam B 210 is an arc-shaped structure.

[0042] like Figure 4 As shown, the elastic ball joint 320 includes a rigid outer ring 321 and a special-shaped rigid inner ring 322. The rigid outer ring 321 is sleeved on the outside of the special-shaped rigid inner ring 322. The middle part of the special-shaped rigid inner ring 322 is set to be an arc convex outward. The rigid outer ring 321 and the special-shaped rigid inner ring 322 are vulcanized into one through a vulcanized rubber layer 323.

[0043] In this embodiment, the inner edges of the upper surfaces of the side beam A120 and the side beam B210 are respectively provided with multiple groups of brake mounting hangers 70, and some groups of brake mounting hangers 70 are located near the L-shaped beam mounting holes 121. Other groups of brake mounting hangers 70 are located near the connection between the cross beam 220 and the side beam B210.

[0044] In this embodiment, a pair of elastic side bearings 400 are provided. A plurality of side bearing holes 25 are respectively provided at both ends of the cross beam 220. The elastic side bearings 400 are connected to the cross beam 220 through the side bearing holes 25, and the elastic side bearings 400 are parallel to the side beam B210.

[0045] A lower center plate hole 24 is provided in the middle of the cross beam 220. The lower center plate 500 is connected to the cross beam 220 through the lower center plate hole 24.

[0046] The fulcrum seat 600 is disposed on one side of the middle portion of the cross beam 220. The angle between the fulcrum seat 600 and the cross beam 220 is equal to 90 degrees.

[0047] Example 2

[0048] This embodiment provides a railway freight car, comprising the railway freight car bogie flexible frame of embodiment 1.

[0049] The present invention is not limited to the above-mentioned embodiments. Without departing from the essential content of the present invention, any deformation, improvement and substitution that can be thought of by those skilled in the art shall fall within the scope of the present invention.

Claims

1. A railway freight car bogie flexible frame, characterized in that: include: The L-shaped beam comprises an end beam and a side beam A; the end beam and the side beam A are welded at right angles to form a rigid whole; the side beam A is provided with an L-shaped beam mounting hole; the bottom surface of the L-shaped beam mounting hole is provided with a first spherical center disk; A T-beam, comprising a side beam B and a cross beam; the middle portion of the side beam B and one end of the cross beam are welded at a right angle to form a rigid whole; a T-beam mounting seat is provided at one end of the cross beam away from the side beam B, and the T-beam mounting seat is configured to be inserted into the L-beam mounting hole; an elastic pad is provided on the upper surface of the T-beam mounting seat; a second spherical center disk is provided on the lower surface of the T-beam mounting seat, and the second spherical center disk is configured to match the first spherical center disk; A connecting component, comprising a connecting bolt, an elastic ball joint and a connecting seat; the connecting seat comprises a base plate and a vertical plate; the vertical plate is arranged to be perpendicular to the base plate, and the vertical plate is provided with a vertical plate through hole; the elastic ball joint is arranged to be able to be inserted into the vertical plate through hole; the connecting bolt is arranged to be able to pass through the elastic ball joint and be fixedly connected to one end of the end beam away from the side beam A; the base plate is arranged to be able to be fixedly connected to the side beam B.

2. The railway freight car bogie flexible frame according to claim 1, characterized in that: The flexible frame of the railway freight car bogie also includes a transition washer, a gasket and a wear pad, wherein the transition washer and the gasket are arranged between the vertical plate and the end beam, and the connecting bolt passes through the elastic ball joint, the transition washer and the gasket in sequence and is fixedly connected to the end of the end beam away from the side beam A; the wear pad is arranged between the second spherical center disk and the first spherical center disk.

3. The railway freight car bogie flexible frame according to claim 1, characterized in that: The flexible frame of the railway freight car bogie also includes an L-shaped beam connecting plate, which is arranged in parallel on the end surface of the end beam away from the side beam A, and an L-shaped beam connecting hole is arranged on the L-shaped beam connecting plate for the connecting bolt to pass through.

4. The railway freight car bogie flexible frame according to claim 3, characterized in that: The flexible frame of the railway freight car bogie also includes a T-beam connecting plate, which is arranged in parallel on one end surface of the side beam B; the T-beam connecting plate is provided with a T-beam connecting hole; the bottom plate of the connecting member is provided with a bottom plate through hole; the T-beam connecting hole and the bottom plate through hole are configured to allow bolts to pass through, thereby connecting the T-beam connecting plate and the bottom plate together.

5. The railway freight car bogie flexible frame according to claim 1, characterized in that: The upper surface of the T-beam mounting seat is provided with an elastic pad mounting hole; the elastic pad is connected to the T-beam mounting seat through the elastic pad mounting hole.

6. The railway freight car bogie flexible frame according to claim 1, characterized in that: The elastic ball joint comprises a rigid outer ring and a special-shaped rigid inner ring. The rigid outer ring is sleeved outside the special-shaped rigid inner ring. The rigid outer ring and the special-shaped rigid inner ring are vulcanized into one through a vulcanized rubber layer.

7. The railway freight car bogie flexible frame according to claim 6, characterized in that: The connecting bolt is a variable-section special-shaped connecting bolt; the middle part of the special-shaped rigid inner ring is in an arc shape that bulges outwards.

8. The railway freight car bogie flexible frame according to any one of claims 1 to 7, characterized in that: The inner edges of the upper surfaces of the side beam A and the side beam B are respectively provided with brake mounting hangers, or the inner edges of the lower surfaces of the side beam A and the side beam B are respectively provided with brake mounting hangers.

9. The railway freight car bogie flexible frame according to claim 8, characterized in that: The flexible frame of the railway freight car bogie also includes elastic side bearings, a lower center plate and a fulcrum seat; the elastic side bearings are a pair, respectively arranged at the two ends of the crossbeam; the lower center plate is arranged in the middle of the crossbeam; the fulcrum seat is arranged on one side of the middle of the crossbeam.

10. A railway freight car, characterized in that: It comprises the railway freight car bogie flexible frame as claimed in any one of claims 1 to 9.

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