Bearing outer ring dismounting device

Abstract

The utility model discloses a bearing outer ring dismounting device. Comprising a loosening and tightening device, the loosening and tightening device comprises a force bearing base corresponding to a corresponding bearing outer ring and a gearbox body, a jacking telescopic body and a jacking telescopic body, the jacking telescopic body and the jacking telescopic body are arranged in the axial direction and the radial direction respectively, and the force bearing base is provided with an axial screw hole and a radial screw hole. The jacking telescopic bodies are in threaded connection with the axial screw holes of the bearing base, one end of each jacking telescopic body corresponds to the bottom direction of a corresponding gearbox body hole, and the jacking telescopic bodies are located at the two opposite ends or the two sides of the bearing base respectively and are in threaded connection with the radial screw holes of the bearing base. And one ends of the two jacking telescopic bodies respectively correspond to two opposite sides of the corresponding bearing outer ring. The bearing outer ring dismantling device can conveniently dismantle the bearing outer ring, and solves the problem that the bearing outer ring is difficult to dismantle during maintenance and repair.

Description

Technical Field

[0001] The utility model relates to a bearing removal tool, mainly to a bearing outer ring removal device for blind hole bearings of gearboxes, end covers and the like. Background Art

[0002] In the manufacturing field of forklift gearboxes, rolling bearings are used for each transmission shaft inside the gearbox. There are some blind holes matching the outer rings of the bearings in the gearbox housing and end covers. The bearings of this structure are generally very compact and have a small space. Due to deviations in the manufacturing process, some outer rings of the bearings have an interference fit with the mounting holes. When the outer rings of the bearings need to be removed from the gearbox for maintenance, it is difficult to remove them due to the lack of suitable tools, which brings inconvenience to maintenance and repair. Therefore, a simple and practical bearing outer ring removal tool is designed to facilitate and quickly remove the bearing outer ring, save maintenance time, and improve work efficiency. Summary of the invention

[0003] The purpose of the utility model is to provide a bearing outer ring removal device to solve the problems existing in the above-mentioned prior art. The bearing outer ring removal device can easily remove the bearing outer ring, solving the problem of difficult removal of the bearing outer ring during maintenance.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the bearing outer ring removal device of the utility model includes a tensioning device, which includes a load-bearing base corresponding to the corresponding bearing outer ring and gearbox housing, and a lifting telescopic body and a tightening telescopic body respectively arranged axially and radially, the load-bearing base is respectively provided with an axial screw hole and a radial screw hole, the lifting telescopic body is threadedly connected to the axial screw hole of the load-bearing base, one end of the lifting telescopic body corresponds to the bottom direction of the corresponding gearbox housing hole, the tightening telescopic body is respectively located at the opposite ends or both sides of the load-bearing base, and is threadedly connected to the radial screw hole of the load-bearing base, and one end of the two tightening telescopic bodies respectively corresponds to the opposite sides of the corresponding bearing outer ring.

[0005] The lifting telescopic body and the tightening telescopic body respectively comprise a lifting telescopic arm and a tightening telescopic arm provided with a threaded connection portion.

[0006] The lifting telescopic arm comprises a lifting bolt, and one end of the lifting bolt is provided with a protective lifting block corresponding to the bottom wall surface of the corresponding gearbox housing hole.

[0007] The tightening telescopic arm comprises a tightening bolt.

[0008] One end of the tightening bolt is provided with a tightening protrusion corresponding to the inner wall surface of the corresponding bearing outer ring.

[0009] The axial screw hole of the load-bearing base is arranged at the center position.

[0010] The load-bearing base is arranged in a rod, bar or disc shape.

[0011] The utility model discloses a bearing outer ring removal device, which can conveniently and quickly remove the bearing outer ring through the retractable bodies corresponding to the radial direction and the axial direction of the bearing, thereby saving maintenance time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axial cross-sectional view of the utility model; Figure 2 for Figure 1 Top view of the . DETAILED DESCRIPTION

[0013] In order to further understand the technical solution of the present invention, the present invention is now further described through embodiments in combination with the accompanying drawings.

[0014] like Figure 1 and 2 As shown, the utility model provides a bearing outer ring removal device, including a load-bearing base 2 that can be placed in the inner hole of the corresponding bearing outer ring 10 to be removed, a lifting bolt 1 and a tightening bolt 3 that are axially and radially arranged relative to the bearing outer ring 10 to be removed.

[0015] The load-bearing base 2 can be set in a rod shape, and a certain space is formed between the two ends of the load-bearing base 2 and the inner hole peripheral wall surface of the bearing outer ring 10.

[0016] The load-bearing base 2 is provided with an axial screw hole 6 corresponding to the axial center line of the bearing outer ring 10. Both ends of the load-bearing base 2 are provided with radial screw holes 5 corresponding to the radial center line of the bearing outer ring 10. The two radial screw holes 5 of the load-bearing base 2 can be through or blind threaded holes, in this case, they are blind threaded holes.

[0017] The lifting bolt 1 is threadedly connected to the axial screw hole 6 of the load-bearing base 2, and one threaded end of the lifting bolt 1 is screwed with a protective top block 8. The threaded end of the lifting bolt 1 can pass through the load-bearing base 2 and be pressed against the bottom wall of the hole of the gearbox case 9 through the protective top block 8.

[0018] One threaded end of the two jacking bolts 3 is threadedly connected to the radial screw holes 5 at the opposite ends of the load-bearing base, and the cap 3a of the jacking bolt 3 is fixed with a jacking protrusion 7, which can correspond to the corresponding part of the inner peripheral wall of the bearing outer ring.

[0019] The linear stroke connecting the two tightening bolts 3 and the radial screw holes 5 of the load-bearing base 2 satisfies: after the load-bearing base 2 is connected with the tightening bolts 3 provided with the tightening protrusions 7, when the tightening bolts 3 are screwed into the radial screw holes 5 of the load-bearing base 2 to a certain depth, the load-bearing base 2 as a whole, that is, the bearing outer ring removal device, can be freely placed in the inner hole of the bearing outer ring, and when the tightening bolts 3 are screwed out to a certain length toward the outside of the radial screw holes 5, the load-bearing base 2 as a whole can be pressed together with the bearing outer ring to form a whole.

[0020] The linear travel of the jacking bolt 1 connecting the axial screw hole 6 of the load-bearing base 2 satisfies that the jacking bolt 1 rotates toward the bottom wall of the hole of the gearbox housing 9 and presses the bottom wall of the hole of the gearbox housing 9 until the outer ring of the bearing is pushed out of the gearbox housing.

[0021] When removing the bearing outer ring from the gearbox, rotate the two jacking bolts 3 into the radial screw holes respectively until the bearing base as a whole can be placed in the bearing outer ring, and then place the bearing base as a whole into the bearing outer ring in the gearbox housing, and make the jacking bolts at both ends correspond to the corresponding parts of the bearing outer ring, namely the rolling track 10a, and use the corresponding tool to rotate the jacking bolt through the cap of the jacking bolt 3 so that the jacking protrusion 7 is pressed into the rolling track of the bearing outer ring to tighten the bearing outer ring; then use the corresponding tool to rotate the jacking bolt 1 through the cap 1a of the jacking bolt so that the protective top block 8 presses the bottom wall of the gearbox housing hole, and then continue to rotate the jacking bolt 1 until the bearing outer ring is ejected from the gearbox housing hole, and then rotate the jacking bolt in the opposite direction until it shrinks and detaches from the inner wall of the bearing outer ring, and the bearing outer ring can be removed from the bearing base.

[0022] In another embodiment, the load-bearing base 2 may be provided in a disc shape. A certain space is formed between the outer peripheral wall of the disc-shaped load-bearing base 2 and the inner peripheral wall of the bearing outer ring 10. Two radial screw holes 5 may be provided on opposite sides of the radial center line of the disc-shaped load-bearing base 2. The remaining structures and corresponding use methods of this example may be similar to those of the above-mentioned embodiment.

Claims

1. A bearing outer ring removal device, comprising a tensioning device, characterized in that: The tensioning device includes a load-bearing base corresponding to the corresponding bearing outer ring and gearbox housing, and a lifting telescopic body and a tightening telescopic body arranged axially and radially respectively. The load-bearing base is respectively provided with an axial screw hole and a radial screw hole. The lifting telescopic body is threadedly connected to the axial screw hole of the load-bearing base, and one end of the lifting telescopic body corresponds to the bottom direction of the corresponding gearbox housing hole. The tightening telescopic body is respectively located at the opposite ends or both sides of the load-bearing base and is threadedly connected to the radial screw hole of the load-bearing base, and one end of the two tightening telescopic bodies respectively corresponds to the opposite sides of the corresponding bearing outer ring.

2. The bearing outer ring removal device according to claim 1, characterized in that: The lifting telescopic body and the tightening telescopic body respectively comprise a lifting telescopic arm and a tightening telescopic arm provided with a threaded connection portion.

3. The bearing outer ring removal device according to claim 2, characterized in that: The lifting telescopic arm comprises a lifting bolt, and one end of the lifting bolt is provided with a protective lifting block corresponding to the bottom wall surface of the corresponding gearbox housing hole.

4. The bearing outer ring removal device according to claim 2, characterized in that: The tightening telescopic arm comprises a tightening bolt.

5. The bearing outer ring removal device according to claim 4, characterized in that: One end of the tightening bolt is provided with a tightening protrusion corresponding to the inner wall surface of the corresponding bearing outer ring.

6. The bearing outer ring removal device according to claim 1, characterized in that: The axial screw hole of the load-bearing base is arranged at the center position.

7. The bearing outer ring removal device according to claim 1 or 6, characterized in that: The load-bearing base is arranged in a rod, bar or disc shape.

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