CN219293852U

CN219293852U - Tool for disassembling bearing

Info

Publication number: CN219293852U
Application number: CN202223301188.2U
Authority: CN
Inventors: 郑大力
Original assignee: Sailun Shenyang Tyre Co ltd
Current assignee: Sailun Shenyang Tyre Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-07-04
Anticipated expiration: 2032-12-09

Abstract

The utility model belongs to the field of bearing repair, and particularly relates to a tool for disassembling a bearing, which comprises the following components: the bearing fixing piece is a square tube, a side face of the square tube is provided with a hole, a key slot through which a shaft connected by a bearing passes is formed in a face corresponding to one face of the hole, threads in the hole penetrate into a screw rod, a force borrowing hole is formed in the top of the screw rod, and an operating rod penetrates into the force borrowing hole. The utility model ensures that the bearing is stressed uniformly, the detached bearing is intact, the operation is simple, and the detachment work can be completed by a single person.

Description

Tool for disassembling bearing

Technical Field

The utility model belongs to the field of bearing repair, and particularly relates to a tool for disassembling a bearing.

Background

The bearing is an important part in the modern equipment machinery, and the main function of the bearing is to support a mechanical rotator, reduce the friction coefficient in the mechanical movement process and ensure the rotation precision of the mechanical rotator. After the bearing is installed in the bearing chamber and shipped to a factory for use, if the bearing is abnormal in use, the bearing is generally taken out of the bearing chamber without damage, and objective technical analysis can be performed on the bearing abnormality.

When the bearing breaks down and needs to be replaced, the bearing and the shaft are in interference fit, so that the bearing is difficult to disassemble, the traditional method for disassembling the bearing is rough, and two methods are generally adopted:

1) The method of expansion with heat and contraction with cold is adopted, the bearing inner ring is expanded and then forced to be pulled out by brute force by expanding the shaft and putting the expanded shaft into the inner aperture of the bearing inner ring, and the bearing is damaged when being taken out.

2) And cutting and decomposing the bearing retainer, and taking out the parts in sequence.

According to the two methods, due to uneven bearing stress, the machine body or the wheel axle can be damaged, the wheel axle can be seriously broken, the maintenance cost is increased intangibly, the working strength is increased, in addition, the working efficiency is low, and the disassembly is inconvenient.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a tool for disassembling a bearing, which can reduce maintenance cost and can not damage a bearing structure.

The utility model is achieved by a tool for removing a bearing, the tool comprising: the bearing fixing piece is a square tube, a side face of the square tube is provided with a hole, a key slot through which a shaft connected by a bearing passes is formed in a face corresponding to one face of the hole, threads in the hole penetrate into a screw rod, a force borrowing hole is formed in the top of the screw rod, and an operating rod penetrates into the force borrowing hole.

Further, the length of the key groove is half of the length of the square pipe.

Further, the square tube is arranged on one side of the opening, and a horizontal nut is welded at the position corresponding to the opening.

Further, the force-borrowing hole is formed at the top of the screw rod by welding a vertical nut.

Further, threads matched with the vertical nuts are arranged on the round steel rods.

Further, the screw rod is a full-thread bolt rod, and the other end of the screw rod is arranged to be conical.

Further, triangular notches are symmetrically formed in the other two sides of the square tube, and the top angles of the triangular notches are positioned at the position of half of the length of the square tube.

Further, adjusting plates are arranged on two sides in the key groove, and the distance between the two adjusting plates is adjusted through screws penetrating through the side faces.

Compared with the prior art, the utility model has the beneficial effects that: the utility model ensures that the bearing is stressed uniformly, the detached bearing is intact, the operation is simple, and the detachment work can be completed by a single person.

Drawings

FIG. 1 is a schematic view of a tool according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a key slot at the bottom of a tool according to an embodiment of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1, a tool for removing a bearing, comprising: the bearing fixing piece adopts a square pipe 7, and the square pipe includes four faces, for axial penetrating structure, trompil 5 on the side of square pipe, open the keyway that the axle that has the bearing to connect passed on the face that one side of trompil corresponds, the position of hole corresponds the keyway, the inboard in hole sets up the screw thread, can penetrate screw rod 3, the top of screw rod sets up borrows the power hole, borrows to penetrate in the power hole 2 and operate rod 1.

Referring to fig. 2, in order to allow the coupled shaft of the bearing to penetrate into the key groove 11, the center of the bearing corresponds to the top of the key groove, the length of the key groove is set to half of the length of the square tube, so that the end of the screw rod can directly correspond to the center of the bearing.

The square tube is welded with a horizontal nut 4 at the position corresponding to the hole on one side of the hole, and the horizontal nut is arranged to further firmly fix the screw on the square tube.

The force-borrowing hole is formed at the top of the screw rod by welding a vertical nut, can be a hole with no threads inside and can be used for penetrating a round steel rod, and the round steel rod is provided with external threads on half of the length and can be matched with the vertical nut.

In this embodiment, the screw is a full thread bolt rod, and the other end of the screw is provided with a taper 8, which can be inserted into the center of the bearing 9.

In order to facilitate the operation and observe whether the center of the bearing is just at the top of the key slot, triangular notches 6 are symmetrically formed on the other two sides of the square tube, and the vertex angle of each triangular notch is positioned at a position which is half of the length of the square tube.

In another embodiment, in order to fit the shaft 10 connected by the bearing of more sizes into the key groove, the key groove is set to be large in size, and the adjusting plates 12 are arranged at both sides in the key groove, the bottom of the square tube is thickened, and the adjusting plates adjust the distance between the two adjusting plates by connecting the screws 13 penetrating through both sides of the bottom.

The dynamic working process is as follows:

the bearing to be taken out is sleeved in the square tube, the round steel rod is inserted into the vertical nut welded at the upper part, the conical end part of the screw rod is propped against the center of the bearing, the bearing is fixed between the screw rod and the two side supports at the bottom, and the round steel rod can rotate clockwise and anticlockwise, so that the whole tool is driven to drive the bearing to rotate clockwise and anticlockwise, the bearing is stressed, and nondestructive taking out is realized.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A tool for removing a bearing, the tool comprising: the bearing fixing piece is a square tube, a side face of the square tube is provided with a hole, a key slot through which a shaft connected by a bearing passes is formed in a face corresponding to one face of the hole, threads in the hole penetrate into a screw rod, a force borrowing hole is formed in the top of the screw rod, and an operating rod penetrates into the force borrowing hole.

2. The bearing removal tool of claim 1, wherein the keyway has a length that is one half the length of the square tube.

3. The bearing removal tool of claim 1, wherein the square tube is welded with a horizontal nut at a location corresponding to the hole on one side of the hole.

4. The tool for removing bearings of claim 1, wherein the force-aid holes are formed in the top of the screw by welding with a vertical nut.

5. The bearing removal tool of claim 4, wherein the lever is provided with threads for mating with a vertical nut.

6. A tool for removing a bearing as claimed in claim 1, wherein the screw is a full thread bolt shaft, and the other end of the screw is tapered.

7. The bearing removal tool as claimed in claim 1, wherein triangular notches are symmetrically formed on the other two sides of the square tube, and a vertex angle of each triangular notch is positioned at a position which is half of the length of the square tube.

8. A tool for removing a bearing according to claim 1, wherein the key slot is provided on both sides with adjusting plates which adjust the distance between the two adjusting plates by connecting screws passing through the sides.