CN112454257A

CN112454257A - Rear oil seal pulling-out tool

Info

Publication number: CN112454257A
Application number: CN202011186807.0A
Authority: CN
Inventors: 黎寿南
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-03-09

Abstract

A rear oil seal pull-out tool comprising: the cross section of the support frame is bowl-shaped, clamping legs are assembled at four corner ends of the support frame, and the clamping legs are used for clamping a sealing ring sleeved at one end of the crankshaft; the bolt rod is spirally assembled at the central position of the support frame; the retainer is arranged between the four groups of clamping legs, and threaded rods are welded at the four corners of the retainer; the technical key points are that the opening angles of the clamping legs can be adjusted by screwing the hexagon nuts in four directions, so that the whole tool can adapt to the pulling of sealing rings with different diameters, and the application range of the whole tool is expanded; the used clamping feet can be buckled on the upper end surface of the sealing ring, when the end surface of the crankshaft is stressed, the clamping feet can be subjected to reverse force to pull out the oil seal downwards, and the sealing ring is simple to use, convenient and practical; use pressure head and backing plate, when rotatory shank of bolt, can exert thrust for pressure head and backing plate to transmit bent axle tip, pressure head and backing plate can avoid the shank of bolt to lead to the fact the damage to the crankshaft tip this moment.

Description

Rear oil seal pulling-out tool

Technical Field

The invention belongs to the field of tool fixtures, and particularly relates to a rear oil seal pulling-out tool.

Background

The tooling fixture is a general term for various tools used in the manufacturing process, and comprises a cutter, a fixture, a die, a measuring tool, a checking tool, an auxiliary tool, a bench tool, a station tool and the like, which are generally referred to as tooling for short.

When a sealing ring designed at the end of a crankshaft is pulled out, the sealing ring is usually pulled out manually, tools such as a screwdriver and a flat-head crowbar are generally adopted to pull out the sealing ring before a tool is put into use, and the sealing ring is easily damaged by the method.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a rear oil seal pulling-out tool.

In order to achieve the purpose, the invention adopts the following technical scheme:

a rear oil seal pull-out tool comprising:

the cross section of the support frame is bowl-shaped, clamping legs are assembled at four corner ends of the support frame, and the clamping legs are used for clamping a sealing ring sleeved at one end of the crankshaft;

the bolt rod is spirally assembled at the central position of the support frame; and

the retainer is arranged at the position between the four groups of clamping legs, threaded rods are welded at the four corners of the retainer, and the opening angle of each clamping leg can be adjusted by rotating the hexagon nuts arranged on the surfaces of the clamping legs.

Preferably, the four groups of clamping feet have the same specification, and in a use state, the four groups of clamping feet are attached to the upper end face of the sealing ring.

Preferably, the support frame is connected with the clamping legs through flange face screws.

Preferably, one end of the bolt rod is provided with a pressure head and a base plate, and the pressure head is connected with the base plate through an inner hexagonal cylindrical head screw.

Preferably, the shim plate is adapted to contact an end face of the crankshaft when the tool is in use.

Preferably, the cross section of the retainer is circular ring-shaped, and the retainer can be sleeved on the outer surface of the end head of the crankshaft.

Compared with the prior art, the invention provides a rear oil seal pulling-out tool, which has the following beneficial effects:

firstly, the opening angles of the clamping legs can be adjusted by screwing the hexagon nuts in four directions, so that the whole tool can adapt to the pulling of sealing rings with different diameters, and the application range of the whole tool is expanded;

secondly, each used clamping foot can be buckled on the upper end face of the sealing ring, when the end face of the crankshaft is stressed, the clamping foot can be subjected to reverse force to pull out the oil seal downwards, and the oil seal clamping device is simple to use, convenient and practical;

thirdly, use pressure head and backing plate, when rotatory shank of bolt, can exert thrust for pressure head and backing plate to transmit bent axle tip, pressure head and backing plate can avoid the shank of bolt to lead to the fact the damage to the crankshaft tip this moment.

Drawings

FIG. 1 is a schematic view of the entire tool of the present invention in use;

FIG. 2 is a schematic view of the present invention on section A;

FIG. 3 is a schematic view of the present invention on section A-A;

fig. 4 is a top view of the support frame structure of the present invention.

Reference numerals: 1. a hexagonal nut; 2. a flange face screw; 3. clamping feet; 4. a holder; 5. a support frame; 6. a bolt shank; 7. a socket head cap screw; 8. a base plate; 9. and (4) pressing head.

Detailed Description

The following further describes a specific embodiment of the rear oil seal removal tool according to the present invention with reference to fig. 1. A rear oil seal removal tool of the present invention is not limited to the description of the following embodiments.

This embodiment provides a specific structure of a rear oil seal removal tool, as shown in fig. 1 to 4, the rear oil seal removal tool includes:

the cross section of the support frame 5 is bowl-shaped, clamping legs 3 are assembled at four corner ends of the support frame 5, and the clamping legs 3 are used for clamping a sealing ring sleeved at one end of a crankshaft;

a bolt bar 6 which is spirally assembled at the center position of the support frame 5; and

the retainer 4 is arranged at the position between the four groups of clamping legs 3, threaded rods are welded at the four corners of the retainer 4, and the opening angle of each clamping leg 3 can be adjusted by rotating the hexagonal nut 1 arranged on the surface of the clamping leg 3.

The adjustable angle of opening of pressing from both sides foot 3 through twisting the hexagon nut 1 of four directions for whole instrument can adapt to and pull out the sealing washer of different diameters, thereby enlarges the application range of whole instrument.

As shown in fig. 1 and 2, the four groups of clamping legs 3 have the same specification, and in the use state, the four groups of clamping legs 3 are attached to the upper end surface of the sealing ring.

The upper end face of the sealing ring can be buckled by each clamping foot 3, when the end face of the crankshaft is stressed, the clamping feet 3 can receive reverse force to pull out the oil seal downwards, and the sealing ring is simple to use, convenient and practical.

As shown in fig. 4, the supporting frame 5 is connected with the clamping leg 3 by a flange surface screw 2.

As shown in fig. 3, one end of the bolt rod 6 is provided with a pressure head 9 and a backing plate 8, and the pressure head 9 and the backing plate 8 are connected by arranging an inner hexagonal socket head cap screw 7.

As shown in fig. 3, the shim plate 8 can be brought into contact with the end face of the crankshaft in the use state of the entire tool.

Above-mentioned pressure head 9 and backing plate 8 of using can apply thrust for pressure head 9 and backing plate 8 when rotatory shank of bolt 6 to transmit the bent axle tip, pressure head 9 and backing plate 8 can avoid the shank of bolt to lead to the fact the damage to the bent axle tip this moment.

As shown in fig. 2, the cross section of the retainer 4 is circular, and the retainer 4 can be fitted to the outer surface of the crankshaft head.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. The utility model provides a back oil blanket pulls out instrument that takes off which characterized in that includes:

the cross section of the support frame (5) is bowl-shaped, clamping legs (3) are assembled at four corner ends of the support frame (5), and the clamping legs (3) are used for clamping a sealing ring sleeved at one end of a crankshaft;

the bolt rod (6) is spirally assembled at the central position of the support frame (5); and

the retainer (4) is arranged at the position between the four groups of clamping feet (3), threaded rods are welded at the four corners of the retainer (4), and the opening angle of each clamping foot (3) can be adjusted by rotating the hexagon nut (1) arranged on the surface of each clamping foot (3).

2. A rear oil seal removal tool as claimed in claim 1, wherein: the four groups of clamping feet (3) have the same specification, and in a use state, the four groups of clamping feet (3) are attached to the upper end face of the sealing ring.

3. A rear oil seal removal tool as claimed in claim 1, wherein: the supporting frame (5) is connected with the clamping feet (3) through the flange face screws (2).

4. A rear oil seal removal tool as claimed in claim 3, wherein: one end of the bolt rod (6) is provided with a pressure head (9) and a backing plate (8), and the pressure head (9) is connected with the backing plate (8) through an inner hexagonal socket head cap screw (7).

5. A rear oil seal removal tool as claimed in claim 1, wherein: the pad plate (8) can be contacted with the end surface of the crankshaft when the whole tool is in a use state.

6. A rear oil seal removal tool as claimed in claim 1, wherein: the section of the retainer (4) is annular, and the retainer (4) can be sleeved on the outer surface of the end of the crankshaft.