Brake shoe support, brake beam and bogie

Abstract

The present invention provides a brake shoe support, a brake beam and a bogie, wherein a roller shaft is arranged on the outer side of the brake shoe support, a roller is sleeved on the roller shaft and can rotate relative to the roller shaft, an end plate is arranged on the outer side of the roller shaft to limit the roller from escaping outward, and the end plate does not protrude from the outer edge of the roller in the radial direction. With the above structure, the roller shaft and the roller can be inserted into the bogie side frame slide groove, and the roller can rotate around the roller shaft, so that when the brake shoe support relieves the braking device, the sliding friction is changed to rolling friction, thereby reducing the friction resistance between the brake shoe support and the bogie; the end plate is fixed to the outer side of the roller shaft, and the roller can be limited between the end plate and the brake shoe support, so as to prevent the roller from lateral movement during movement or escaping from the roller shaft during transportation.

Description

Technical Field

[0001] The invention relates to the technical field of railway vehicles, and in particular to a brake shoe support, a brake beam and a bogie. Background Art

[0002] The brake beam is an important part of the railway vehicle braking system. Its main function is to transmit the braking force to the wheels through the brake beam when the vehicle is braked, so that the vehicle stops moving.

[0003] The brake beam usually includes a frame and brake shoe supports arranged at both ends of the frame. A slider is arranged on the outside of the brake shoe support, and the slider can be inserted into the slide groove of the bogie side frame to make the brake shoe support and the slide groove slidably connected. When the brake beam relieves the braking system, the sliding friction between the slider and the slide groove is large, resulting in poor braking performance of the brake beam.

[0004] In order to reduce the sliding friction between the brake beam and the bogie in the prior art, the slider arranged on the outside of the brake shoe support is replaced with a roller shaft assembly, so that when the brake beam releases the brake device, the sliding friction between the brake shoe support and the slideway is changed to rolling friction, thereby reducing the friction resistance between the brake beam and the bogie. However, since the rollers in the roller shaft assembly are not restrained laterally, there are problems such as lateral movement of the rollers in actual applications and loss of the rollers during transportation.

[0005] Therefore, how to provide a brake beam that can prevent the roller from lateral movement and separation from the roller shaft assembly during transportation is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a brake beam capable of preventing a roller from lateral movement and separation from a roller shaft assembly during transportation.

[0007] In order to solve the above technical problems, the present invention provides a brake shoe support, wherein a roller shaft is arranged on the outside of the brake shoe support, a roller is sleeved on the roller shaft and can rotate relative to the roller shaft, an end plate is arranged on the outside of the roller shaft and can limit the roller from escaping outward, and the end plate does not protrude beyond the outer edge of the roller in the radial direction.

[0008] With the above structure, the roller shaft and the roller can be inserted into the slide groove of the bogie side frame, and the roller can rotate around the roller shaft, so that when the brake shoe support relieves the braking device, the sliding friction is changed into rolling friction, thereby reducing the friction resistance between the brake shoe support and the bogie; the end plate is fixed to the outside of the roller shaft, and the roller can be limited between the end plate and the brake shoe support, which can prevent the roller from moving laterally during movement or separating from the roller shaft during transportation.

[0009] Optionally, a mounting hole is provided on the outer side of the roller shaft, and a fixing hole corresponding to the mounting hole is provided on the end plate, and the end plate can be fixed to the roller shaft by a fastener.

[0010] Optionally, the roller is a cylindrical structure with a through hole, the through hole matches the roller shaft, and the roller is sleeved on the roller shaft through the through hole.

[0011] Optionally, the roller is a linear bearing with a through hole, and the linear bearing can be fixed to the roller shaft by interference fit.

[0012] Optionally, a reinforcement structure is provided at the root of the roller shaft, and the roller shaft and the brake shoe support are integrally formed.

[0013] Optionally, it also includes a slider, wherein the slider and the roller are arranged side by side in front and behind the outer side of the brake shoe support, and the roller is close to the curved surface of the brake shoe support; the top of the roller is not lower than the top of the slider part, and the bottom of the roller is not lower than the bottom of the slider part.

[0014] Optionally, the slider portion includes a slider and a slider sleeve, the slider sleeve is mounted on the slider, corresponding two side walls of the slider sleeve are provided with corresponding positioning holes, the slider is provided with holes matching the two positioning holes, and the slider sleeve can be fastened by inserting fasteners into the positioning holes, the holes and the slider.

[0015] Optionally, two roller shafts are arranged side by side on the outer side of the brake shoe support, and both roller shafts are provided with corresponding rollers and end plates.

[0016] The present invention also provides a brake beam, comprising a frame, a support and a clip, wherein the frame is an isosceles triangle structure, the support and the clip are fixedly connected and supported between the top corner and the bottom edge of the frame, and brake shoe supports are provided at both ends of the frame, and the brake shoe supports are the brake shoe supports described above.

[0017] The present invention also provides a bogie, comprising a brake beam, wherein the brake beam is the brake beam described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a first implementation mode of a brake shoe support provided in an embodiment of the present invention;

[0019] Figure 2 Figure 1 Schematic diagram of the structure of the middle roller shaft and the slider;

[0020] Figure 3 yes Figure 2 A top view of

[0021] Figure 4 is a schematic structural diagram of a roller shaft in a second embodiment of a brake shoe support provided in an embodiment of the present invention;

[0022] Figure 5 yes Figure 4 A top view of

[0023] Figure 6 yes Figure 1 A schematic structural diagram of a first embodiment of the middle roller;

[0024] Figure 7 yes Figure 1 A schematic structural diagram of a second embodiment of the middle roller;

[0025] Figure 8 yes Figure 1 Schematic diagram of the structure of the middle end board;

[0026] Fig. 9 yes Figure 1 A schematic diagram of the structure of the middle slider sleeve;

[0027] Fig.10 yes Figure 1 Schematic diagram of the forces acting on the middle brake shoe when it contacts the slideway;

[0028] Fig.11 is a schematic structural diagram of a brake beam provided by an embodiment of the present invention;

[0029] Fig.12 It is a schematic structural diagram of a bogie provided in an embodiment of the present invention.

[0030] Figure 1-12 The reference numerals in the figures are described as follows:

[0031] 1 frame, 2 brake shoe support, 21 roller shaft, 211 mounting hole, 212 reinforcement structure, 22 roller, 221 through hole, 23 end plate, 231 fixing hole, 24 slider, 241 hole, 25 slider sleeve, 251 positioning hole, 3 pillars, 4 clips. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Please refer to Figure 1-10 , Figure 1 It is a structural schematic diagram of a first implementation mode of a brake shoe support provided in an embodiment of the present invention; Figure 2 Figure 1 Schematic diagram of the structure of the middle roller shaft and the slider; Figure 3 yes Figure 2 A top view of Figure 4 is a schematic structural diagram of a roller shaft in a second embodiment of a brake shoe support provided in an embodiment of the present invention; Figure 5 yes Figure 4 A top view of Figure 6 yes Figure 1 A schematic structural diagram of a first embodiment of the middle roller; Figure 7 yes Figure 1 A schematic structural diagram of a second embodiment of the middle roller; Figure 8 yes Figure 1 Schematic diagram of the structure of the middle end board; Fig. 9 yes Figure 1 A schematic diagram of the structure of the middle slider sleeve; Fig.10 yes Figure 1 Schematic diagram of the forces acting on the middle brake shoe when it contacts the slideway.

[0034] The present invention provides a brake shoe support, wherein a roller shaft 21 is arranged on the outer side of the brake shoe support 2, a roller 22 is sleeved on the roller shaft 21 and can rotate relative to the roller shaft 21, an end plate 23 is arranged on the outer side of the roller shaft 21 and can limit the roller 22 from escaping outward, and the end plate 23 does not protrude from the outer edge of the roller 22 in the radial direction.

[0035] By adopting the above structure, the roller 22 arranged on the outside of the brake shoe support 2 and sleeved on the roller shaft 21 can be clamped in the slide groove of the bogie side frame. When the brake shoe support 2 contacts the wheel for braking or releasing the brake, the roller 22 can rotate relative to the roller shaft 21 to roll in the slide groove, thereby converting the sliding friction between the brake shoe support 2 and the slide groove into rolling friction, thereby reducing the friction resistance between the brake shoe support 2 and the bogie; the end plate 23 is fixed to the outside of the roller shaft 21, and can limit the roller 22 between the end plate 23 and the brake shoe support 2, thereby preventing the roller 22 from moving laterally during movement or separating from the roller shaft during transportation.

[0036] Among them, the outer side of the brake shoe support 2 refers to the side away from the frame 1, the brake shoe support 2 is fixedly connected on both sides of the frame 1, the left side of the left brake shoe support 2 is the outer side of the left brake shoe support 2, the right side of the right brake shoe support 2 is the outer side of the right brake shoe support 2, the outer side of the roller shaft 21 is the same as the outer side of the brake shoe support 2, the radial direction refers to the radial direction of the roller 22 or the roller shaft 21, and the outer edge of the roller 22 refers to the outer edge along the radial direction of the roller 22.

[0037] Please refer to Figure 1 In this embodiment, the end plate 23 at least partially protrudes from the outer edge of the roller shaft 21 in the radial direction of the roller shaft 21 or the roller 22, and the protruding portion can limit the roller 22 so that the roller 22 cannot escape from the outer side of the roller shaft 21. The end plate 23 does not protrude from the outer edge of the roller 22 in the radial direction of the roller 22 to prevent the end plate 23 from interfering with the rolling of the roller 22 or increasing the rolling friction between the brake shoe support 2 and the chute.

[0038] Please refer to Figure 2 In this embodiment, a mounting hole 211 is provided on the outer side of the roller shaft 21, and a fixing hole 231 corresponding to the mounting hole 211 is provided on the end plate 23. The end plate 23 can be fixed to the roller shaft 21 by fasteners.

[0039] like Figure 8 As shown, in this embodiment, the end plate 23 is a disc-shaped structure, and a fixing hole 231 corresponding to the mounting hole 211 is arranged at the center thereof. The fasteners may be screws, rivets, etc. The end plate 23 may be fixed to the roller shaft 21 by screws, rivets, etc. passing through the fixing hole 231 and the mounting hole 211. This installation method is more convenient and facilitates subsequent disassembly and maintenance operations.

[0040] It can be understood that the end plate 23 can also be fixed to the roller shaft 21 by other methods besides the above, and the present invention is not limited to this. As long as the end plate 23 can be fixed to the outer side of the roller shaft 21 and limit the roller 22, for example, the end plate 23 can also be fixed to the roller shaft 21 by welding, clamping, etc.

[0041] In addition, the end plate 23 can also be a structure other than a disc-shaped structure. The present invention does not limit this, as long as at least part of it can protrude from the outer edge of the roller shaft 21 and does not protrude from the outer edge of the roller 22. For example, the end plate 23 can also be a polygonal disc-shaped structure or a stick-shaped structure.

[0042] In this embodiment, the roller shaft 21 is a cylindrical structure, fixedly connected to the outer side of the brake shoe support 2, and the roller 22 can be a cylindrical structure with a through hole 221, such as Figure 6 As shown, the through hole 221 matches the roller shaft 21, so that the roller 22 can be sleeved on the roller shaft 21 through the through hole 221 and rotate relative to the roller shaft 21; the roller 22 can also be a linear bearing with a through hole 221, such as Figure 7 As shown, the through hole 221 also matches the roller shaft 21 , and the linear bearing can be installed on the roller shaft 21 by interference fit, and the linear bearing itself can rotate to rotate relative to the roller shaft 21 .

[0043] It can be understood that the roller shaft 21 and the roller 22 can also be other structures besides the above structures, and the two can also be connected in other ways. The present invention does not limit this. As long as the two can cooperate with each other, the sliding friction between the brake shoe support 2 and the slide groove can be converted into rolling friction.

[0044] In addition, since the roller 22 needs to roll and rub with the slide groove, it is necessary to use a material with high strength, good wear resistance and low friction coefficient to ensure that the roller 22 has a long service life. If the roller 22 uses a linear bearing, the material of the outer layer of the linear bearing also needs to have the above characteristics to prevent the roller 22 from being damaged during use and causing a safety accident.

[0045] In this embodiment, a reinforcement structure 212 is disposed at the root of the roller shaft 21 , and the roller shaft 21 and the brake shoe support 2 are integrally formed.

[0046] Specific as Figure 2-4 As shown, when the brake shoe support 2 contacts the wheel for braking, the position where the lower surface of the roller 22 contacts the slide groove will bear the main pressure brought by the braking, so that there is a large stress between the brake shoe support 2 and the roller shaft 21, and cracks may appear at the root of the roller shaft 21, or even directly break from the connection between the roller shaft 21 and the brake shoe support 2. In this embodiment, a reinforcement structure 212 is provided at the root of the roller shaft 21, and the roller shaft 21 and the brake shoe support 2 are integrally formed, so that the strength between the roller shaft 21 and the brake shoe support 2 is strong and the stability is high, which can effectively prevent the roller shaft 21 from being damaged by excessive pressure.

[0047] The reinforcement structure 212 can be arranged only on the radially outer side of the roller 21 and in the direction of bearing pressure to enhance the strength of the roller 21 in the corresponding direction. Figure 2 As shown, Figure 2 The middle roller shaft 21 will be subjected to pressure from the slide groove and the pressure acting on the upper surface, so the reinforcement structure 212 can be set on the upper side of the root of the roller shaft 21; the reinforcement structure 212 can also be set on the radial outer side of the roller shaft 21 to enhance the overall strength of the connection between the roller shaft 21 and the brake shoe support 2, and the present invention is not limited to this.

[0048] The present embodiment also includes a slider part, which is arranged side by side with the roller shaft 21 on the front and rear of the outer side of the brake shoe support 2, and the roller shaft 21 is close to the arc side of the brake shoe support 2, which is the side of the brake shoe support 2 away from the wheel. The front and rear direction refers to the movement direction of the brake shoe support 2 when it moves horizontally, that is, Fig.11 The direction indicated by the middle arrow, as well as the overall length direction and movement direction of the rail vehicle, enables the roller shaft 21 and the slider part to be simultaneously inserted into the slide groove of the bogie.

[0049] In a first embodiment of the brake shoe support 2, as Figure 1 As shown in the figure, the outer side of the brake shoe support 2 is provided with a slider and a roller shaft 21, and corresponding rollers 22, end plates 23, etc., and the roller shaft 21 is close to the curved side of the brake shoe support 2; the top of the roller 22 is not lower than the top of the slider, and the bottom of the roller 22 is not lower than the bottom of the slider. This arrangement makes the brake shoe support 2 only have rolling friction with the upper side wall of the slideway, and the lower side wall is still in sliding friction. However, when the brake shoe support 2 contacts the wheel for braking, as shown in FIG. Fig.10 As shown, Fig.10 The direction indicated by the middle arrow is the force direction of the slider 24 and the roller 21. The slider 24 capable of withstanding a greater pressure is used to withstand the main braking pressure, thereby further increasing the stability and safety of the brake shoe support 2.

[0050] In a second embodiment of the brake shoe support 2, as shown in FIG. Figure 4As shown, two roller shafts 21 and corresponding rollers 22 and end plates 23 are arranged side by side on the outer side of the brake shoe support 2. This embodiment enables rolling friction between the brake shoe support 2 and the upper and lower side walls of the slideway, and the friction resistance between the brake shoe support 2 and the bogie is small.

[0051] In this embodiment, the slider portion includes a slider 24 and a slider sleeve 25. The slider sleeve 25 is sleeved with the slider 24. The corresponding two side walls of the slider sleeve 25 are provided with corresponding positioning holes 251. The slider 24 is provided with holes 241 that match the two positioning holes 251. The slider sleeve 25 can be fastened to the slider 24 by inserting fasteners into the positioning holes 251 and the holes 241.

[0052] In the first embodiment of the brake shoe support 2, the slider 24 and the roller 21 are integrally formed with the brake shoe support 2 to increase the strength of the two, so that the two can withstand greater pressure without cracking or breaking.

[0053] When the brake shoe support 2 contacts the wheel for braking or releasing the braking, the slider sleeve 25 can replace the slider 24 to contact the slide groove and slide friction, thereby reducing the wear of the slider 24. The fastener can be a screw, a rivet, etc., and the slider sleeve 25 is fixed to the slider 24 by the screw or rivet sleeve. Of course, the slider sleeve 25 can also be fixed to the slider 24 by other methods other than the above, and the present invention is not limited to this.

[0054] The structure of the slider sleeve 25 is as follows: Fig. 9 As shown, it can be a cylindrical structure to cover the circumferential outer side of the slider 24, or a barrel-shaped structure to cover the circumferential outer side and outer surface of the slider 24. The present invention does not limit the structure of the slider cover 25, as long as it can cover the slider 24 and replace the slider 24 in sliding friction with the slide groove. The material requirements of the slider cover 25 are the same as those of the roller 22, and also need to have a material with high strength, good wear resistance and low friction coefficient to increase the service life and reduce the friction resistance between the brake shoe support 2 and the bogie.

[0055] In addition, since there is a certain inclination between the bogie side frame slideway and the brake shoe support 2, that is, Figure 3 and Figure 5 The angle in the direction indicated by the middle arrow, therefore, in order to ensure that the roller 22 of the roller shaft 21 and the slider sleeve 25 of the slider 24 can roll and slide linearly in the slide groove, the roller shaft 21 and the slider 24 should also be set to a certain inclination, so that the roller 22 and the slider sleeve 25 can roll and slide linearly in the slide groove. The specific setting of the inclination should be determined according to the inclination between the bogie side frame slide groove and the brake shoe support 2 in actual application.

[0056] Please refer to Fig.11 , Fig.11 It is a schematic structural diagram of a brake beam provided in an embodiment of the present invention.

[0057] The present invention also provides a brake beam, comprising a frame 1, a pillar 3 and a clip 4, the frame 1 is an isosceles triangle structure, the pillar 3 and the clip 4 are fixedly connected and made between the top corner and the bottom edge of the frame 1, and brake shoe supports 2 are provided at both ends of the frame 1. The brake shoe support 2 is the brake shoe support 2 described above. Since the brake shoe support 2 already has the above technical effects, the brake beam including the brake shoe support 2 should also have the same technical effects, so it will not be repeated here.

[0058] Please refer to Fig.12 , Fig.12 It is a schematic structural diagram of a bogie provided in an embodiment of the present invention.

[0059] The present invention also provides a bogie, including a brake beam, which is the brake beam described above. Since the brake beam has the above technical effects, the bogie including the brake beam should also have the same technical effects, so it will not be repeated here.

[0060] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A brake shoe support, characterized in that: A roller shaft (21) is arranged on the outside of the brake shoe support (2), and the roller (22) is sleeved on the roller shaft (21) and can rotate relative to the roller shaft (21). An end plate (23) is arranged on the outside of the roller shaft (21) and can limit the roller (22) from escaping outward, and the end plate (23) does not protrude from the outer edge of the roller (22) in the radial direction. It also includes a slider portion, wherein the slider portion and the roller shaft (21) are arranged side by side at the front and rear of the outer side of the brake shoe support (2), and the roller shaft (21) is close to the curved surface of the brake shoe support (2); the top of the roller (22) is not lower than the top of the slider portion, and the bottom of the roller (22) is not lower than the bottom of the slider portion.

2. The brake shoe support according to claim 1, characterized in that: The outer side of the roller shaft (21) is provided with a mounting hole (211), the end plate (23) is provided with a fixing hole (231) corresponding to the mounting hole (211), and the end plate (23) can be fixed to the roller shaft (21) by a fastener.

3. The brake shoe support according to claim 1, characterized in that: The roller (22) is a cylindrical structure having a through hole (221), the through hole (221) matches the roller shaft (21), and the roller (22) is sleeved on the roller shaft (21) through the through hole (221).

4. The brake shoe support according to claim 1, characterized in that: The roller (22) is a linear bearing having a through hole (221), and the linear bearing can be fixed to the roller shaft (21) by interference fit.

5. The brake shoe holder according to claim 1, characterized in that: A reinforcement structure (212) is provided at the root of the roller shaft (21), and the roller shaft (21) and the brake shoe support (2) are integrally formed.

6. The brake shoe holder according to any one of claims 1 to 5, characterized in that: The slider portion comprises a slider (24) and a slider sleeve (25), wherein the slider sleeve (25) is sleeved with the slider (24), and corresponding two side walls of the slider sleeve (25) are provided with corresponding positioning holes (251), and the slider (24) is provided with holes (241) matching with the two positioning holes (251), and the slider sleeve (25) can be fastened by inserting fasteners into the positioning holes (251), the holes (241) and the slider (24).

7. The brake shoe support according to any one of claims 1 to 5, characterized in that: Two roller shafts (21) are arranged side by side on the outer side of the brake shoe support (2), and the two roller shafts (21) are each provided with a corresponding roller (22) and an end plate (23).

8. A brake beam, comprising a frame (1), a support (3) and a clip (4), wherein the frame (1) is an isosceles triangle structure, the support (3) and the clip (4) are fixedly connected and supported between the top corner and the bottom edge of the frame (1), characterized in that: Brake shoe supports (2) are provided at both ends of the frame (1), and the brake shoe supports (2) are the brake shoe supports (2) described in any one of claims 1 to 7.

9. Bogie, characterized in that: It comprises a brake beam, wherein the brake beam is the brake beam according to claim 8.

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