Mounting and fixing tool for bearing retainer ring of walking wheel

Abstract

The utility model provides a tool for installing and fixing a bearing retainer of a walking wheel. The tool comprises a positioning cage and a fixing disc, the positioning cage is used for sleeving the periphery of the bearing mounting section and is in sliding connection with the bearing mounting section; the positioning cage comprises a first positioning disc and a second positioning disc which are arranged in a spaced mode, the first positioning disc is used for abutting against the bearing retainer ring, the second positioning disc is used for abutting against the fixing disc, and at least three connecting rods are arranged between the first positioning disc and the second positioning disc in a clamped mode; the fixing disc is used for being in threaded connection with the locking nut installation section. The bearing retainer is sleeved into the hollow axle after being heated, then the bearing retainer can be sleeved into the positioning cage, then the fixing plate is screwed into the locking nut mounting section and continuously screwed to abut against the second positioning plate, then the positioning cage is pushed to push the bearing retainer to a set mounting position, and the tool can be disassembled after the bearing retainer is cooled. The tool is used for replacing a manual pressing assembly mode, the workload of maintainers is reduced, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of maintenance tools, in particular to a mounting and fixing tool for a running wheel bearing retaining ring. Background Art

[0002] The existing straddle monorail vehicle bogie structure can be generally referred to CN112572504A. Its running wheels are specifically installed on the outer periphery of a hollow axle provided on a bogie main body. Bearings need to be installed on both sides of the running wheels, and both bearings are sleeved on the outer periphery of the hollow axle. Among them, a bearing retaining ring is also installed between the bearing close to the bogie main body and the bogie. One side of the bearing retaining ring abuts against the axle shoulder of the hollow axle, and the other side abuts against the inner ring of the bearing. The bearing retaining ring is used not only to position the installation position of the bearing but also to cooperate with other components. There is an interference fit between the bearing retaining ring and the hollow axle. Therefore, when installing the bearing retaining ring, it is necessary to heat it first to expand its diameter, and a person wears heat-insulating gloves to press the bearing retaining ring in the specified position and wait for the retaining ring to cool down and be fixed in this designated position. Such an operation method is time-consuming and laborious, with low operation efficiency and waste of manpower. Content of the Utility Model

[0003] Aiming at the defects in the prior art, the mounting and fixing tool for a running wheel bearing retaining ring provided by the utility model is used to solve the technical problem that the installation operation of the bearing retaining ring on the outer periphery of the hollow axle of the existing straddle monorail vehicle bogie is time-consuming, laborious and has low efficiency due to the lack of a mounting and fixing tool.

[0004] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0005] A mounting and fixing tool for a running wheel bearing retaining ring is used to be sleeved on the outer periphery of a hollow axle of a straddle monorail vehicle bogie. The hollow axle includes an adjacent bearing installation section and a lock nut installation section, and the lock nut installation section is located at the end of the hollow axle. The bearing retaining ring is sleeved on one side of the bearing installation section away from the lock nut installation section. The bearing retaining ring mounting and fixing tool includes a positioning cage and a fixing disk. The positioning cage is used to be sleeved on the outer periphery of the bearing installation section and is slidably connected to the bearing installation section. The positioning cage includes a first positioning disk and a second positioning disk arranged at intervals, and the first positioning disk is used to abut against the bearing retaining ring, and the second positioning disk is used to abut against the fixing disk. At least three connecting rods are clamped between the first positioning disk and the second positioning disk. The fixing disk is used to be threadedly connected to the lock nut installation section and is also used to push the positioning cage to push the bearing retaining ring to a set installation position after abutting against the second positioning disk.

[0006] Optionally, the inner wall of the second positioning plate is also threadedly connected to a movable ring, and the second positioning plate is sleeved on the outer periphery of the bearing mounting section through the movable ring; the inner wall of the second positioning plate is provided with an internal thread, the outer diameter of the fixed plate is the same as the outer diameter of the movable ring, and the outer wall of the fixed plate and the outer wall of the movable ring are respectively provided with external threads for matching with the internal threads.

[0007] Optionally, at least one groove is provided on the inner peripheral wall of the movable ring.

[0008] Optionally, a positioning rod is inserted into the outer peripheral wall of the second positioning plate, and at least one positioning hole matched with the positioning rod is opened on the outer peripheral wall of the movable ring.

[0009] Optionally, the positioning rod is threadedly connected to the second positioning disk.

[0010] Optionally, the positioning cage further comprises a first handle, wherein the first handle is connected to one of the connecting rods.

[0011] Optionally, a second handle is further provided on the side of the fixing plate facing away from the positioning cage.

[0012] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0013] The utility model provides a tool for fixing the running wheel bearing retaining ring, including a positioning cage and a fixing plate; the positioning cage is used to be sleeved on the outer periphery of the bearing mounting section and is slidably connected with the bearing mounting section; the positioning cage includes a first positioning plate and a second positioning plate arranged at intervals, and the first positioning plate is used to abut against the bearing retaining ring, the second positioning plate is used to abut against the fixing plate, and at least three connecting rods are sandwiched between the first positioning plate and the second positioning plate; the fixing plate is used to be threadedly connected with the locking nut mounting section. The bearing retaining ring is inserted into the hollow axle after heating, and then the positioning cage of the present application can be inserted and the positioning cage can be pushed until the second positioning plate passes over the end of the hollow axle, and the fixing plate can be screwed into the locking nut mounting section and continued to be screwed until it abuts against the second positioning plate, and then the positioning cage is pushed to push the bearing retaining ring to the set installation position, and the tool can be removed after the bearing retaining ring is cooled. The tool is used to replace the manual assembly method, which reduces the workload of maintenance personnel and effectively improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0015] Figure 1Schematic diagram of a hollow axle structure for mounting running wheels on a monorail vehicle bogie;

[0016] Figure 2 Schematic diagram of the structure of a retaining ring bearing and a bearing provided on the hollow axle;

[0017] Figure 3 Exploded view of a fixture for installing and fixing a bearing retaining ring of a running wheel;

[0018] Figure 4 Application schematic diagram of a fixture for installing and fixing a bearing retaining ring of a running wheel;

[0019] Figure 5 Schematic diagram of the structure of another embodiment of a fixture for installing and fixing a bearing retaining ring of a running wheel;

[0020] Reference numerals:

[0021] 1 - positioning cage, 2 - fixed disk, 3 - movable ring;

[0022] 11 - first positioning disk, 12 - second positioning disk, 13 - connecting rod, 14 - first handle, 21 - second handle, 31 - groove;

[0023] 100 - hollow axle, 110 - bearing installation section, 120 - lock nut installation section, 200 - bearing, 300 - bearing retaining ring. Detailed implementation manners

[0024] The embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0025] The present invention provides a fixture for installing and fixing a bearing retaining ring of a running wheel. Please refer to Figures 1-4 , this fixture is used to be sleeved on the outer periphery of the hollow axle of the monorail vehicle bogie. The hollow axle includes an adjacent bearing installation section and a lock nut installation section, and the lock nut installation section is located at the end of the hollow axle. The bearing retaining ring is sleeved on the side of the bearing installation section away from the lock nut installation section. Embodiment

[0026] This embodiment aims to make full use of existing materials and be as light, stable and convenient as possible to meet the usage requirements of operators. Please refer to Figure 3The bearing retaining ring installation and fixing tool includes a positioning cage 1 and a fixing plate 2. The positioning cage 1 is used to be sleeved on the outer periphery of the bearing installation section and is slidably connected to the bearing installation section. The positioning cage 1 is used to abut against the bearing retaining ring so as to facilitate the positioning cage 1 to push the heated bearing retaining ring, thereby avoiding direct contact between the operator and the heated bearing retaining ring and ensuring the safety of the operator. The fixing plate 2 is used to be threadedly connected to the locking nut installation section, and is also used to push the positioning cage 1 to push the bearing retaining ring to a set installation position after abutting against the end of the positioning cage 1. Specifically, this embodiment also provides one of the specific structures of the positioning cage 1, wherein the positioning cage 1 includes a first positioning plate 11 and a second positioning plate 12 arranged at intervals, and the first positioning plate 11 is used to abut against the bearing retaining ring, and the second positioning plate 12 is used to abut against the fixing plate 2, and at least three connecting rods 13 are sandwiched between the first positioning plate 11 and the second positioning plate 12. Preferably, the positioning cage 1 further includes a first handle 14, which is connected to one of the connecting rods 13, so that the positioning cage 1 can be conveniently and quickly moved with the help of the first handle 14. Similarly, the fixing plate 2 is also provided with a second handle 21 on the side away from the positioning cage 1. In particular, in this embodiment, the required fixing plate 2 can be obtained by directly welding the second handle 21 to the discarded bolts and nuts, making full use of the on-site materials. Example

[0027] In the first embodiment, the positioning cage 1 and the fixed plate 2 are separated from each other, and cooperate with each other to realize the positioning and installation of the bearing retaining ring when in use. However, when not in use, the two separated parts are inconvenient to store when placed idle, and even the relatively small fixed plate 2 may be lost. Therefore, this embodiment makes further improvements to the first embodiment, aiming to make the positioning cage 1 and the fixed plate 2 be assembled into a whole when idle for easy storage, and then disassembled when in use. For details, please refer to Figure 5, the inner wall of the second positioning disk 12 is also threadedly connected with a movable ring 3, and the second positioning disk 12 is sleeved on the outer periphery of the bearing mounting section through the movable ring 3; the inner wall of the second positioning disk 12 is provided with an internal thread, the outer diameter of the fixed disk 2 is the same as the outer diameter of the movable ring 3, and the outer walls of the fixed disk 2 and the movable ring 3 are respectively provided with external threads for matching with the internal threads. Preferably, at least one groove 31 is provided on the inner peripheral wall of the movable ring 3, so that the operator can use the corresponding tool to move the movable ring 3 and then complete the screwing of the movable ring 3 to change its position in the second positioning disk 12. When the tooling is idle, the movable ring 3 is screwed to accommodate it on the inner side of the second positioning disk 12, and the fixed disk 2 is also screwed into the second positioning disk 12, so that the positioning cage 1 and the fixed disk 2 are assembled as one, which is convenient for storage; when the tooling needs to be used, the fixed disk 2 is first loosened and removed for standby use, and then the movable ring 3 is loosened to expose part of it on the side of the second positioning disk 12 away from the first positioning disk 11. When the bearing retaining ring is installed, the fixed disk 2 is abutted against the movable ring 3 to push the entire positioning cage 1 to push the bearing retaining ring.

[0028] As a further improvement to the second embodiment, since the fixed disk 2 is spirally fed, when the fixed disk 2 abuts against the movable ring 3, the fixed disk 2 is continuously screwed. If the friction between the fixed disk 2 and the movable ring 3 is large, the movable ring 3 may be driven to rotate in the same direction. Therefore, a positioning rod (not shown in the figure) can be inserted on the outer peripheral wall of the second positioning disk 12, and at least one positioning hole (not shown in the figure) adapted to the positioning rod is opened on the outer peripheral wall of the movable ring 3. When the movable ring 3 is screwed to be exposed outside the second positioning disk 12 and any positioning hole is aligned with the positioning rod, the positioning rod can be inserted into the positioning hole, thereby realizing the locking and positioning of the movable ring 3, so as to effectively prevent the movable ring 3 from changing its own position as the fixed disk 2 is screwed, and ensure the normal use of the tooling. Preferably, the positioning rod is threadedly connected to the second positioning disk 12.

[0029] With this tooling, the bearing retaining ring is inserted into the hollow axle after heating, and then the positioning cage can be inserted, and then the positioning cage is pushed until the second positioning plate passes over the end of the hollow axle, and the fixing plate can be screwed into the locking nut installation section, and then the positioning cage is pushed to the second positioning plate to push the bearing retaining ring to the set installation position, and the tooling can be removed after the bearing retaining ring cools down. The tooling replaces the manual assembly method, and makes the bearing retaining ring evenly stressed, avoiding the situation of rework due to unqualified installation, reducing the workload of maintenance personnel, and effectively improving work efficiency.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A running wheel bearing retainer installation and fixing tooling, which is used to be sleeved on the outer periphery of the hollow axle of a monorail vehicle bogie. The hollow axle includes an adjacent bearing installation section and a lock nut installation section, and the lock nut installation section is located at the end of the hollow axle. The bearing retainer is sleeved on the side of the bearing installation section away from the lock nut installation section; characterized in that, The bearing retaining ring installation and fixing tool comprises a positioning cage (1) and a fixing plate (2); the positioning cage (1) is used to be sleeved on the outer periphery of the bearing installation section and is slidably connected to the bearing installation section; the positioning cage (1) comprises a first positioning plate (11) and a second positioning plate (12) which are arranged at intervals, and the first positioning plate (11) is used to abut against the bearing retaining ring, and the second positioning plate (12) is used to abut against the fixing plate (2), and at least three connecting rods (13) are sandwiched between the first positioning plate (11) and the second positioning plate (12); the fixing plate (2) is used to be threadedly connected to the locking nut installation section, and is also used to push the positioning cage (1) to move the bearing retaining ring to a set installation position after abutting against the second positioning plate (12).

2. The installation and fixing tooling for the running wheel bearing retaining ring according to claim 1, characterized in that The inner wall of the second positioning plate (12) is also threadedly connected to a movable ring (3), and the second positioning plate (12) is sleeved on the outer circumference of the bearing mounting section through the movable ring (3); the inner wall of the second positioning plate (12) is provided with an internal thread, the outer diameter of the fixed plate (2) is the same as the outer diameter of the movable ring (3), and the outer wall of the fixed plate (2) and the outer wall of the movable ring (3) are respectively provided with an external thread for matching with the internal thread.

3. The traveling wheel bearing retaining ring installation and fixing tooling according to claim 2, characterized in that At least one groove (31) is provided on the inner peripheral wall of the movable ring (3).

4. The installation and fixing tooling for the traveling wheel bearing retaining ring according to claim 3, characterized in that A positioning rod is inserted into the outer peripheral wall of the second positioning plate (12), and at least one positioning hole matching the positioning rod is opened on the outer peripheral wall of the movable ring (3).

5. The traveling wheel bearing retaining ring installation and fixing tooling according to claim 4, characterized in that The positioning rod is threadedly connected to the second positioning disk (12).

6. The running wheel bearing retaining ring installation and fixing tooling according to claim 5, characterized in that The positioning cage (1) further comprises a first handle (14), wherein the first handle (14) is connected to one of the connecting rods (13).

7. The installation and fixation tooling for the traveling wheel bearing retaining ring according to claim 6, characterized in that, A second handle (21) is also provided on the side of the fixing plate (2) facing away from the positioning cage (1).

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