Bearing dismounting tool

Abstract

The utility model discloses a bearing dismounting tool, which belongs to the technical field of tool clamps, and comprises a dismounting main body, one end of the dismounting main body is provided with a first fork and a second fork which are parallel to each other, and the end parts of the first fork and the second fork are respectively outwards provided with a first bulge and a second bulge; a tensioning threaded hole and a contraction threaded hole are formed in the middle of the first fork, a through hole corresponding to the contraction threaded hole is formed in the middle of the second fork, a tensioning bolt is arranged in the tensioning threaded hole, the front end of the tensioning bolt points to the second fork, a contraction bolt is arranged in the through hole, and the front end of the contraction bolt is connected with the contraction threaded hole. The dismounting tool has the advantage that the needle bearing in the pump body of the gear pump can be conveniently dismounted.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to a bearing disassembly tooling. Background Technology

[0002] Our gear pumps use needle roller bearings without inner rings. The inner ring has a clearance fit with the gear shaft, but the outer ring has an interference fit with the bearing bore of the pump body.

[0003] Because it is a blind hole, when the pump body is disassembled for inspection or when the pump body aluminum is recycled and the bearing needs to be removed, normal disassembly tools cannot be used. The current method is to add machining to the tail of the pump body, mill it off, and then stamp it out, which is time-consuming, labor-intensive, and very inconvenient to disassemble. Summary of the Invention

[0004] The present invention aims to solve the technical problems mentioned in the background section above by providing a bearing disassembly fixture that can easily disassemble the needle roller bearing inside the gear pump body.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: a bearing disassembly fixture, comprising a disassembly body, one end of which is provided with a parallel first fork and a second fork, the ends of which are respectively provided with a first protrusion and a second protrusion pointing outwards, the middle of the first fork being provided with a tensioning threaded hole and a contraction threaded hole, the middle of the second fork being provided with a through hole corresponding to the contraction threaded hole, a tensioning bolt being provided in the tensioning threaded hole, the front end of the tensioning bolt pointing towards the second fork, a contraction bolt being provided in the through hole, and the front end of the contraction bolt being connected to the contraction threaded hole.

[0006] In some embodiments, the end of the disassembly body away from the first and second forks is provided with a threaded hole for a connecting pin.

[0007] In some embodiments, the length of the first branch is the same as that of the second branch.

[0008] In some embodiments, the length of the first branch is 200 mm.

[0009] In some embodiments, the length of the second branch is 200 mm.

[0010] In some embodiments, the first protrusion and the second protrusion are symmetrically arranged along the centerline of the disassembly body.

[0011] In some embodiments, the height of the first protrusion is 2 mm.

[0012] In some embodiments, the height of the second protrusion is 2 mm.

[0013] The advantages of this invention compared to the prior art are: it allows for easy removal of the bearing while ensuring the pump body remains intact, without damaging the bearing, thus improving work efficiency.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the bearing disassembly tooling according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the tooling for disassembling the bearing according to an embodiment of the present utility model.

[0017] In the attached diagram: 1. Disassembled main body; 2. Tensioning bolt; 3. Contraction bolt; 4. Threaded hole for connecting pin puller; 5. Pump body; 6. Needle roller bearing; 7. Tensioning threaded hole; 8. Contraction threaded hole; 9. Through hole; 10. First branch; 11. Second branch; 12. First protrusion; 13. Second protrusion. Detailed Implementation

[0018] The present invention will now be described in further detail.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] Combination Figure 1 As shown, the bearing disassembly fixture in this embodiment mainly includes a disassembly body 1, a tensioning bolt 2, and a contraction bolt 3. The disassembly body 1 is a cylinder with a total length of 260mm and a diameter of 34mm. A 200mm long through groove is cut along the axial direction at the middle of the left end of the cylinder. The two sides of the through groove are a first branch 10 and a second branch 11, respectively. The left end of the first branch 10 has an upward-facing first protrusion 12 with a height of 2mm, and the left end of the second branch 11 has a downward-facing second protrusion 13 with a height of 2mm. The first protrusion 12 and the second protrusion 13 need to undergo local high-frequency quenching treatment to increase their strength and reliability.

[0021] The first branch 10 has a tensioning threaded hole 7 and a shrinking threaded hole 8 machined in the middle. The second branch 11 has a through hole 9 machined at the position corresponding to the shrinking threaded hole 8. The tensioning bolt 2 passes through the tensioning threaded hole 7 from top to bottom, and the shrinking bolt 3 passes through the through hole 9 and the shrinking threaded hole 8 from bottom to top.

[0022] The right end of the disassembled main body 1 has a threaded hole 4 for the connecting pin puller.

[0023] Combination Figure 2As shown, when using this tooling, first, install and fix the pump body 5 with the bearing to be disassembled in a vise. Then, ensure that the tension bolt 2 is completely loosened, and then tighten the shrink bolt 3 until the first protrusion 12 and the second protrusion 13 at the front end of the first branch 10 and the second branch 11 can be easily inserted into the bearing. After the first protrusion 12 and the second protrusion 13 have penetrated to the bottom of the pump body 5, completely loosen the tightening bolt, and then tighten the tension bolt 2 until the first branch 10 and the second branch 11 are fully and tightly fitted with the bearing. Finally, connect the pin puller to the connecting pin puller threaded hole 4 of the disassembly body 1, and use the pin puller to remove the bearing to be disassembled. This tooling is simple and quick to use, and can protect the bearing from damage during disassembly, making it convenient to use.

[0024] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bearing disassembly fixture, comprising a disassembly body (1), characterized in that: One end of the disassembly body (1) is provided with a parallel first fork (10) and a second fork (11). The ends of the first fork (10) and the second fork (11) are respectively provided with a first protrusion (12) and a second protrusion (13). The middle part of the first fork (10) is provided with a tension thread hole (7) and a shrink thread hole (8). The middle part of the second fork (11) is provided with a through hole (9) corresponding to the shrink thread hole (8). The tension thread hole (7) is provided with a tension bolt (2). The front end of the tension bolt (2) points to the second fork (11). The through hole (9) is provided with a shrink bolt (3). The front end of the shrink bolt (3) is connected to the shrink thread hole (8).

2. The bearing disassembly fixture according to claim 1, characterized in that: The disassembly body (1) is provided with a connecting pin threaded hole (4) at the end away from the first branch (10) and the second branch (11).

3. The bearing disassembly fixture according to claim 1, characterized in that: The length of the first branch (10) is the same as that of the second branch (11).

4. The bearing disassembly fixture according to claim 1, characterized in that: The length of the first branch (10) is 200mm.

5. The bearing disassembly fixture according to claim 1, characterized in that: The length of the second branch (11) is 200mm.

6. The bearing disassembly fixture according to claim 1, characterized in that: The first protrusion (12) and the second protrusion (13) are symmetrically arranged along the center line of the disassembly body (1).

7. The bearing disassembly fixture according to claim 1, characterized in that: The height of the first protrusion (12) is 2mm.

8. The bearing disassembly fixture according to claim 1, characterized in that: The second protrusion (13) has a height of 2 mm.

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