Combined needle bearing for high-speed rail braking system

Abstract

The utility model discloses a combined needle bearing for a high-speed rail braking system, and relates to the technical field of needle bearings. The device comprises a first shaft sleeve, a plurality of supporting rods are fixed to one side of the first shaft sleeve, and a plurality of limiting sleeves are fixed to one side of the first shaft sleeve; a mounting plate is fixed at one end of the limiting sleeve; a first mounting hole is formed in the surface of the mounting plate; roller pins are rotationally connected to the outer sides of the supporting rods; a plurality of limiting grooves are formed in one side of the second shaft sleeve; second mounting holes are formed in the inner walls of the limiting grooves, and multiple limiting holes are formed in the surface of the second shaft sleeve. Under the action of the second shaft sleeve and the reinforcing ring, the roller pin part can be flexibly replaced, the situation that the whole bearing needs to be replaced due to abrasion of the roller pin part is avoided, the structure of the device is reasonable, the structure of the bearing is stable during normal use, and the service life of the bearing is prolonged. And the second shaft sleeve and the reinforcing ring simultaneously fix the other end of the roller pin, so that the roller pin is prevented from shaking during use.

Description

Technical Field

[0001] The utility model belongs to the technical field of needle roller bearings, in particular to a combined needle roller bearing for a high-speed railway braking system. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers. Relative to their diameter, the rollers are thin and long. Such rollers are called needle rollers. Despite their small cross-section, the bearings still have a high load bearing capacity. Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact. When the inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, which is particularly suitable for support structures with limited radial installation dimensions.

[0003] Needle roller bearings are also widely used in high-speed rail braking. The utility model with publication number "CN220706241U" and name "A needle roller bearing for high-speed rail that is easy to add oil" discloses a needle roller bearing for high-speed rail. It mainly removes the assembly semi-ring plate from the position between the outer ring and the inner ring, and then the assembly semi-ring plate no longer limits the inner ring inside the outer ring, so that the inner ring and the outer ring can be disassembled. However, the installation and combination structure of the device is not compact. After a period of use, the inner ring and the outer ring are very easy to loosen, resulting in a decrease in the overall service life of the bearing. Utility Model Content

[0004] The utility model aims to provide a combined needle roller bearing for a high-speed railway braking system. Through the action of a second sleeve and a reinforcement ring, the device can flexibly replace the needle roller part to avoid the need to replace the entire bearing due to wear of the needle roller part. The device has a reasonable structure and a stable bearing structure during normal use. The second sleeve and the reinforcement ring simultaneously fix the other end of the needle roller to avoid shaking of the needle roller during use. This solves the problem that the installation and combined structure of the existing device are not compact, and after a period of use, the inner ring and the outer ring are very easy to loosen, resulting in a decrease in the overall service life of the bearing.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A combined needle roller bearing for a high-speed rail braking system comprises a first sleeve, a plurality of support rods are fixed to one side of the first sleeve, and a plurality of limit sleeves are fixed to one side of the first sleeve;

[0007] A mounting plate is fixed to one end of the limiting sleeve, and a first mounting hole is opened on the surface of the mounting plate;

[0008] The outer side of the support rod is rotatably connected with a roller needle;

[0009] One end of the limiting sleeve is movably connected to a second sleeve, and one side of the second sleeve is provided with a plurality of limiting grooves;

[0010] The inner wall of the limiting groove is provided with a second mounting hole, and the surface of the second sleeve is provided with a plurality of limiting holes;

[0011] A plurality of connecting rods are fixed to the side of the second sleeve away from the limiting groove, and a reinforcement ring is fixed to one end of the connecting rod;

[0012] A plurality of third mounting holes are formed on the surface of the reinforcement ring.

[0013] The utility model is further configured as follows: the first mounting hole, the second mounting hole and the third mounting hole correspond to each other;

[0014] Threaded rods are passed through the first mounting hole, the second mounting hole and the third mounting hole, and threaded pipes are threadedly connected to the outer circles of the threaded rods.

[0015] The utility model is further configured as follows: a positioning tube is fixed to one side of the reinforcement ring close to the connecting rod, and one end of the support rod passes through the limiting hole and is clamped into the inner circle of the positioning tube.

[0016] The utility model is further configured as follows: an adjustment groove is provided at one end of the needle roller close to the second sleeve, and an adjustment ring is fixed at one side of the second sleeve close to the first sleeve.

[0017] The utility model is further configured as follows: a plurality of slide grooves are provided on the outer side of the adjusting ring, and positioning rods are fixed inside the slide grooves.

[0018] The utility model is further configured as follows: a protective ring is rollingly connected to the outer side of the positioning rod, and the protective ring is rollingly connected to the inner wall of the adjusting groove.

[0019] The utility model is further configured as follows: the limiting sleeve is a fan-shaped structure, and the outer wall of the needle roller matches the inner wall of the limiting sleeve.

[0020] The utility model has the following beneficial effects:

[0021] The utility model utilizes the functions of the second sleeve and the reinforcement ring to flexibly replace the needle roller part, thereby avoiding the need to replace the entire bearing due to wear of the needle roller part. The structure of the device is reasonable, and the structure of the bearing is stable during normal use. The second sleeve and the reinforcement ring fix the other end of the needle roller at the same time, thereby avoiding the needle roller from shaking during use.

[0022] The utility model uses the function of the adjusting ring to further limit the needle roller to prevent the needle roller from shaking during the rolling process. At the same time, when the adjusting ring rotates in the adjusting groove, the protective ring is rollingly connected with the inside of the adjusting groove, thereby reducing the friction between the adjusting ring and the adjusting groove, and ensuring the flexible rotation of the needle roller while limiting the needle roller.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The utility model is a structural schematic diagram of a combined needle roller bearing for a high-speed railway braking system.

[0026] Figure 2 It is a schematic diagram of the side view structure of the utility model.

[0027] Figure 3 It is a schematic diagram of the formal perspective structure of the utility model.

[0028] Figure 4 For the utility model Figure 3 A partial enlarged view of point A in the middle.

[0029] Figure 5 It is a schematic diagram of the limit sleeve structure of the utility model.

[0030] Figure 6 This is a schematic diagram of the needle roller structure of the utility model.

[0031] Figure 7 This is a schematic diagram of the second shaft sleeve structure of the utility model.

[0032] Figure 8 It is a schematic diagram of the structure of the second bearing of the utility model from a side view.

[0033] Fig. 9 For the utility model Figure 8 A partial enlarged view of point B in the middle.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1-first sleeve, 2-support rod, 3-limit sleeve, 4-mounting plate, 5-first mounting hole, 6-needle roller, 7-second sleeve, 8-limit groove, 9-second mounting hole, 10-limit hole, 11-connecting rod, 12-reinforcement ring, 13-third mounting hole, 14-threaded rod, 15-threaded tube, 16-positioning tube, 17-adjusting groove, 18-adjusting ring, 19-slide groove, 20-positioning rod, 21-protective ring. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0039] For specific embodiment 1, please refer to Figure 1-9 The utility model is a combined needle roller bearing for a high-speed railway braking system, comprising a first sleeve 1, a plurality of support rods 2 are fixed to one side of the first sleeve 1, a plurality of limit sleeves 3 are fixed to one side of the first sleeve 1; a mounting plate 4 is fixed to one end of the limit sleeve 3, and a first mounting hole 5 is opened on the surface of the mounting plate 4; a needle roller 6 is rotatably connected to the outer side of the support rod 2; a second sleeve 7 is movably connected to one end of the limit sleeve 3, and a plurality of limit grooves 8 are opened on one side of the second sleeve 7; a second mounting hole 9 is opened on the inner wall of the limit groove 8, and a plurality of limit holes 10 are opened on the surface of the second sleeve 7; a plurality of connecting rods 11 are fixed to the side of the second sleeve 7 away from the limit groove 8, and a reinforcement ring 12 is fixed to one end of the connecting rod 11; a plurality of third mounting holes 13 are opened on the surface of the reinforcement ring 12; the limit sleeve 3 is a fan-shaped structure, and the outer wall of the needle roller 6 matches the inner wall of the limit sleeve 3.

[0040] Specifically, the first mounting hole 5 , the second mounting hole 9 and the third mounting hole 13 correspond to each other; a threaded rod 14 penetrates through the first mounting hole 5 , the second mounting hole 9 and the third mounting hole 13 , and a threaded tube 15 is threadedly connected to the outer circle of the threaded rod 14 .

[0041] Furthermore, a positioning tube 16 is fixed to one side of the reinforcement ring 12 close to the connecting rod 11 , and one end of the support rod 2 passes through the limiting hole 10 and is inserted into the inner circle of the positioning tube 16 .

[0042] The operation process of this embodiment is as follows: since the needle bearings in the high-speed rail braking system need to work at high intensity, the needles in the needle bearings are very easy to wear and age. After a period of use, if the needle roller 6 is worn and needs to be replaced, the threaded tube 15 can be rotated. After the threaded tube 15 is rotated out from the threaded rod 14, the threaded rod 14 is pulled out, and then the reinforcement ring 12 is pulled outward, and the second sleeve 7 can be removed from one side of the limit sleeve 3. At this time, one end of the needle roller 6 is separated from the second sleeve 7, and the needle roller 6 that needs to be replaced can be removed, and then a new needle roller 6 is taken out, so that the side of the needle roller 6 with the adjustment groove 17 is opened Towards the second sleeve 7, insert the needle roller 6 into the outside of the support rod 2, then align the limiting groove 8 on one side of the second sleeve 7 with the mounting plate 4, and after clamping the second sleeve 7, insert several threaded rods 14 into the first mounting hole 5, the second mounting hole 9 and the third mounting hole 13, and then tighten them with the threaded tube 15. The device can flexibly replace the needle roller 6 to avoid the need to replace the entire bearing due to the wear of the needle roller 6. The structure of the device is reasonable, and the structure of the bearing is stable during normal use. The second sleeve 7 and the reinforcement ring 12 simultaneously fix the other end of the needle roller 6 to avoid shaking of the needle roller 6 during use.

[0043] For specific embodiment 2, please refer to Figure 8-9 On the basis of the first specific embodiment, an adjustment groove 17 is formed at one end of the needle roller 6 close to the second sleeve 7 , and an adjustment ring 18 is fixed to one side of the second sleeve 7 close to the first sleeve 1 .

[0044] Specifically, a plurality of slide grooves 19 are formed on the outer side of the adjustment ring 18 , and positioning rods 20 are fixed inside the slide grooves 19 .

[0045] Furthermore, a protection ring 21 is rollingly connected to the outer side of the positioning rod 20 , and the protection ring 21 is rollingly connected to the inner wall of the adjustment groove 17 .

[0046] The operation process of this embodiment is as follows: when the device is in use, when the second sleeve 7 is fixed to one end of the limiting sleeve 3, the adjusting ring 18 is inserted into the adjusting groove 17, and the adjusting ring 18 can further limit the needle roller 6 to prevent the needle roller 6 from shaking during the rolling process. At the same time, when the adjusting ring 18 rotates in the adjusting groove 17, the protective ring 21 is connected to the inside of the adjusting groove 17 in a rolling manner, thereby reducing the friction between the adjusting ring 18 and the adjusting groove 17, and ensuring the flexible rotation of the needle roller 6 while limiting the needle roller 6.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A combined needle roller bearing for a high-speed railway braking system, comprising a first sleeve (1), characterized in that: A plurality of support rods (2) are fixed to one side of the first shaft sleeve (1), and a plurality of limit sleeves (3) are fixed to one side of the first shaft sleeve (1); A mounting plate (4) is fixed to one end of the limiting sleeve (3), and a first mounting hole (5) is formed on the surface of the mounting plate (4); The outer side of the support rod (2) is rotatably connected to a roller needle (6); One end of the limiting sleeve (3) is movably connected to a second shaft sleeve (7), and one side of the second shaft sleeve (7) is provided with a plurality of limiting grooves (8); The inner wall of the limiting groove (8) is provided with a second mounting hole (9), and the surface of the second shaft sleeve (7) is provided with a plurality of limiting holes (10); A plurality of connecting rods (11) are fixed to the side of the second sleeve (7) away from the limiting groove (8), and a reinforcement ring (12) is fixed to one end of the connecting rod (11); A plurality of third mounting holes (13) are formed on the surface of the reinforcement ring (12).

2. A combined needle roller bearing for a high-speed railway braking system according to claim 1, characterized in that: The first mounting hole (5), the second mounting hole (9) and the third mounting hole (13) correspond to each other; A threaded rod (14) penetrates the first mounting hole (5), the second mounting hole (9) and the third mounting hole (13), and a threaded tube (15) is threadedly connected to the outer ring of the threaded rod (14).

3. The combined needle roller bearing for high-speed railway braking system according to claim 1, characterized in that: A positioning tube (16) is fixed to one side of the reinforcement ring (12) close to the connecting rod (11), and one end of the support rod (2) passes through the limiting hole (10) and is inserted into the inner circle of the positioning tube (16).

4. The combined needle roller bearing for high-speed railway braking system according to claim 1, characterized in that: An adjustment groove (17) is formed on one end of the needle roller (6) close to the second shaft sleeve (7), and an adjustment ring (18) is fixed on one side of the second shaft sleeve (7) close to the first shaft sleeve (1).

5. A combined needle roller bearing for a high-speed railway braking system according to claim 4, characterized in that: A plurality of slide grooves (19) are formed on the outer side of the adjustment ring (18), and a positioning rod (20) is fixed inside the slide groove (19).

6. A combined needle roller bearing for a high-speed railway braking system according to claim 5, characterized in that: A protective ring (21) is rollingly connected to the outer side of the positioning rod (20), and the protective ring (21) is rollingly connected to the inner wall of the adjustment groove (17).

7. The combined needle roller bearing for high-speed railway braking system according to claim 1, characterized in that: The limiting sleeve (3) is a fan-shaped structure, and the outer wall of the needle roller (6) matches the inner wall of the limiting sleeve (3).

Images