Traction motor shaft sleeve and bearing inner ring dismounting tool

Abstract

The utility model relates to the field of traction motors, and discloses a traction motor shaft sleeve and bearing inner ring dismounting tool which comprises a dismounting tool structure and a shaft sleeve positioning structure. The shaft sleeve positioning structure is arranged on the outer side of a traction motor shaft sleeve on the outer side of a traction motor transmission shaft in a sleeving mode, then a user manually shakes a hand rocker above a hydraulic pump for multiple times, the free end of the jack moves downwards and abuts against the traction motor shaft sleeve at the moment, and thrust is converted into axial displacement of the traction motor shaft sleeve and a shaft sleeve inner ring; compared with a medium-frequency induction heating mode and a manual screw rotating method based on the puller principle, the shaft sleeve and the shaft sleeve inner ring of the traction motor are gradually separated from the transmission shaft, the phenomenon that the transmission shaft is burnt black due to high temperature is avoided, the operation time is shortened, and the dismounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of traction motors, in particular to a tool for disassembling a traction motor shaft sleeve and a bearing inner ring. Background Art

[0002] The traction motor's shaft sleeve has an interference fit with the split bearing inner ring and shaft. Currently, the industry generally uses two methods for disassembly: one is to use a medium-frequency sensor to heat the shaft sleeve and bearing inner ring to expand the components due to heat, thereby removing the shaft sleeve and bearing inner ring; the other is to use axial external tension combined with tooling to remove and disassemble at room temperature.

[0003] When using medium-frequency induction heating, there is a risk of burns to the operator due to the high heating temperature. Secondly, in the process of using the heating device to locally heat the target area, the drive shaft will also be affected by the heat, and its surface may appear burnt black. The external force extraction method based on the puller principle generates axial tension by manually rotating the screw, but this method has low operating efficiency, the operator will feel more tired, and the tooling used is prone to greater wear. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a tool for disassembling a traction motor shaft sleeve and a bearing inner ring, which solves the problems of easy burns and low efficiency during the disassembly and separation of the traction motor shaft sleeve and the shaft.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a traction motor bearing inner ring disassembly tool, including a disassembly tool structure and a sleeve positioning structure, the disassembly tool structure includes a hydraulic pump, a jack, a connecting pipe, a connecting collar and a threaded air nozzle, the output end of the hydraulic pump is connected to a connecting pipe, the other end of the connecting pipe is fixedly connected to a connecting collar, the connecting collar is threadedly connected to the outside of the threaded air nozzle, the threaded air nozzle is arranged on the side of the jack, the outer side of the lower end of the jack is provided with an external thread, the lower end of the jack is installed inside the sleeve positioning structure, the sleeve positioning structure includes a fixed snap ring, a movable snap ring, a fixed arm, a movable arm, a locking knob and a threaded ring, a threaded ring is welded on the inner side of the upper end of the fixed snap ring, the threaded ring is threadedly connected to the external thread on the jack, and the free end of the jack is arranged inside the fixed snap ring.

[0006] Preferably, a movable snap ring is provided on one side of the fixed snap ring, a fixed arm is fixedly connected to the outer side of the fixed snap ring, and a movable arm is fixedly connected to the outer side of the movable snap ring. The connection between the fixed arm and the movable arm is alternately arranged up and down and is rotatably connected to each other.

[0007] Preferably, a locking knob is provided at the connection between the fixed arm and the movable arm.

[0008] Preferably, the side wall surfaces of the fixed snap ring and the movable snap ring are vertically provided with a plurality of visible elliptical grooves.

[0009] Preferably, handles are fixedly connected to the outer sides of the fixed clamping ring and the movable clamping ring.

[0010] A traction motor shaft sleeve is provided, wherein the traction motor shaft sleeve is arranged inside the shaft sleeve positioning structure, and a shaft sleeve inner ring is provided on the outer side of the traction motor shaft sleeve.

[0011] Beneficial effects

[0012] The utility model provides a tool for disassembling the traction motor shaft sleeve and bearing inner ring. Compared with the existing technology, it has the following advantages:

[0013] 1. In the present invention, a disassembly tooling structure is provided. During the process of disassembling the traction motor shaft sleeve and the traction motor drive shaft, the shaft sleeve positioning structure is sleeved on the outside of the traction motor shaft sleeve on the outside of the traction motor drive shaft. Then, the user manually shakes the hand crank above the hydraulic pump multiple times. At this time, the free end of the jack moves down and presses against the traction motor shaft sleeve. The thrust is converted into axial displacement of the traction motor shaft sleeve and the shaft sleeve inner ring, gradually separating the traction motor shaft sleeve and the shaft sleeve inner ring from the drive shaft. Compared with the medium-frequency induction heating method and the manual screw rotation method based on the puller principle, the present invention avoids burns to personnel and the blackening of the drive shaft due to high temperature, reduces operation time, and improves disassembly efficiency.

[0014] 2. In the present invention, the sleeve positioning structure is provided, and in the process of sleeve-mounting the sleeve positioning structure on the outside of the traction motor sleeve on the outside of the traction motor drive shaft, the rotation restriction between the fixed arm and the movable arm is released by loosening the locking knob, and then the movable snap ring can be flipped away from the fixed snap ring, and the fixed snap ring and the movable snap ring are sleeved on the outside of the traction motor sleeve, and then the movable snap ring is flipped back to the position where it fits with the fixed snap ring, and finally the locking knob is tightened. At this time, the traction motor sleeve is in the sleeve positioning structure to prevent it from being displaced during the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of a traction motor shaft sleeve and bearing inner ring removal tool proposed by the present invention;

[0016] Figure 2 This is a schematic diagram of the rear three-dimensional structure of a traction motor shaft sleeve and bearing inner ring disassembly tool proposed by the present invention;

[0017] Figure 3 This is a structural schematic diagram of a shaft sleeve positioning structure in a traction motor shaft sleeve and bearing inner ring disassembly tool proposed by the present invention;

[0018] Figure 4 This is a schematic diagram of the exploded structure of a shaft sleeve positioning structure in a traction motor shaft sleeve and bearing inner ring disassembly tool proposed by the utility model.

[0019] Legend:

[0020] 1. Traction motor shaft sleeve; 2. Shaft sleeve inner ring; 3. Disassembly tooling structure; 301. Hydraulic pump; 302. Jack; 303. Connecting pipe; 304. Connecting collar; 305. Threaded air nozzle; 4. Shaft sleeve positioning structure; 401. Fixed snap ring; 402. Movable snap ring; 403. Fixed arm; 404. Movable arm; 405. Locking knob; 406. Handle; 407. Visible oval groove; 408. Threaded ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-4 , the utility model provides two technical solutions, specifically including the following embodiments:

[0023] Example 1:

[0024] A traction motor bearing inner ring disassembly tool, including a disassembly tool structure 3 and a sleeve positioning structure 4, the disassembly tool structure 3 includes a hydraulic pump 301, a jack 302, a connecting pipe 303, a connecting collar 304 and a threaded air nozzle 305, the output end of the hydraulic pump 301 is connected to the connecting pipe 303, the specific model of the hydraulic pump 301 is VP-20 / 12, it should be noted that the piston structure in the hydraulic pump 301 is relatively mature in the prior art, and the prior art is cited here, so the internal structure of the hydraulic pump 301 is not described in detail, the other end of the connecting pipe 303 is fixedly connected to the connecting collar 304, and the connecting collar 304 is threadedly connected to the threaded air nozzle 305. On the outside of the threaded air nozzle 305, the threaded air nozzle 305 is arranged on the side of the jack 302, and an external thread is arranged on the outside of the lower end of the jack 302. The lower end of the jack 302 is installed inside the shaft sleeve positioning structure 4. The shaft sleeve positioning structure 4 includes a fixed snap ring 401, a movable snap ring 402, a fixed arm 403, a movable arm 404, a locking knob 405 and a threaded ring 408. A threaded ring 408 is welded on the inner side of the upper end of the fixed snap ring 401. The threaded ring 408 is threadedly connected to the external thread on the jack 302. The threaded connection method can realize the mutual disassembly and assembly of the jack 302 and the disassembly tooling structure 3. The free end of the jack 302 is arranged inside the fixed snap ring 401.

[0025] During operation, during the process of disassembling the traction motor sleeve 1 and the traction motor drive shaft, the sleeve positioning structure 4 is sleeved on the outside of the traction motor sleeve 1 on the outside of the traction motor drive shaft. Then the user manually shakes the hand crank above the hydraulic pump 301 multiple times. At this time, the free end of the jack 302 moves down and presses against the traction motor sleeve 1. The thrust is converted into axial displacement of the traction motor sleeve 1 and the sleeve inner ring 2, gradually separating the traction motor sleeve 1 and the sleeve inner ring 2 from the drive shaft. Compared with the medium-frequency induction heating method and the manual rotation screw method based on the puller principle, it avoids the burning black phenomenon of the drive shaft due to high temperature, reduces the operation time, and improves the disassembly efficiency.

[0026] Example 2:

[0027] On the basis of the first embodiment, a movable snap ring 402 is provided on one side of the fixed snap ring 401, a fixed arm 403 is fixedly connected to the outside of the fixed snap ring 401, and a movable arm 404 is fixedly connected to the outside of the movable snap ring 402. The connection between the fixed arm 403 and the movable arm 404 is alternately arranged up and down and rotatably connected to each other. The side wall surfaces of the fixed snap ring 401 and the movable snap ring 402 are vertically opened with a plurality of visible oval grooves 407, and the outsides of the fixed snap ring 401 and the movable snap ring 402 are fixedly connected to handles 406;

[0028] A traction motor sleeve, the traction motor sleeve 1 is arranged inside the above-mentioned sleeve positioning structure 4, the outer side of the traction motor sleeve 1 is provided with a sleeve inner ring 2, the traction motor sleeve 1 is installed on the outside of the traction motor drive shaft, and in the process of sleeve-positioning the sleeve positioning structure 4 on the outside of the traction motor sleeve 1 on the outside of the traction motor drive shaft, the rotation restriction between the fixed arm 403 and the movable arm 404 is released by loosening the locking knob 405, and then the movable snap ring 402 can be flipped away from the fixed snap ring 401, and the fixed snap ring 401 and the movable snap ring 402 are sleeved on the outside of the traction motor sleeve 1, and then the movable snap ring 402 is flipped back to a position where it fits with the fixed snap ring 401, and finally the locking knob 405 is tightened. At this time, the traction motor sleeve 1 is in the sleeve positioning structure 4 to prevent it from being displaced during the disassembly process.

[0029] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the scope of protection of the present application.

Claims

1. A traction motor bearing inner ring disassembly tool, comprising a disassembly tool structure (3) and a sleeve positioning structure (4), characterized in that: The disassembly tooling structure (3) comprises a hydraulic pump (301), a jack (302), a connecting pipe (303), a connecting collar (304) and a threaded air nozzle (305). The output end of the hydraulic pump (301) is connected to the connecting pipe (303). The other end of the connecting pipe (303) is fixedly connected to the connecting collar (304). The connecting collar (304) is threadedly connected to the outside of the threaded air nozzle (305). The threaded air nozzle (305) is arranged on the side of the jack (302). The outside of the lower end of the jack (302) is provided with a The jack (302) is externally threaded, and the lower end of the jack is installed inside the shaft sleeve positioning structure (4). The shaft sleeve positioning structure (4) includes a fixed snap ring (401), a movable snap ring (402), a fixed arm (403), a movable arm (404), a locking knob (405) and a threaded ring (408). The inner side of the upper end of the fixed snap ring (401) is welded with a threaded ring (408). The threaded ring (408) is threadedly connected to the external thread on the jack (302). The free end of the jack (302) is arranged inside the fixed snap ring (401).

2. The tool for disassembling the inner ring of a traction motor bearing according to claim 1, characterized in that: A movable snap ring (402) is provided on one side of the fixed snap ring (401), a fixed arm (403) is fixedly connected to the outside of the fixed snap ring (401), and a movable arm (404) is fixedly connected to the outside of the movable snap ring (402), and the connection between the fixed arm (403) and the movable arm (404) is alternately arranged up and down and is rotatably connected to each other.

3. The tool for disassembling the inner ring of a traction motor bearing according to claim 2, characterized in that: A locking knob (405) is provided at the connection between the fixed arm (403) and the movable arm (404).

4. The tool for disassembling the inner ring of a traction motor bearing according to claim 2, characterized in that: The side wall surfaces of the fixed snap ring (401) and the movable snap ring (402) are both vertically provided with a plurality of visible elliptical grooves (407).

5. The tool for disassembling the inner ring of a traction motor bearing according to claim 2, characterized in that: The outer sides of the fixed snap ring (401) and the movable snap ring (402) are both fixedly connected with handles (406).

6. A traction motor sleeve, characterized in that: The traction motor shaft sleeve (1) is arranged inside the shaft sleeve positioning structure (4) of the traction motor bearing inner ring disassembly tool described in any one of claims 1 to 5 above, and the outer side of the traction motor shaft sleeve (1) is provided with a shaft sleeve inner ring (2).

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