CN213575519U

CN213575519U - Oil seal limiting device for steering oil pump framework

Info

Publication number: CN213575519U
Application number: CN202021173467.3U
Authority: CN
Inventors: 周燮平
Original assignee: Nanjing Northford Mechanical And Electrical Equipment Co ltd
Current assignee: Nanjing Northford Mechanical And Electrical Equipment Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-06-29
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a turn to oil pump skeleton oil blanket stop device, including the pump body and link up the axle hole that turns to of the pump body left and right sides, turn to and be equipped with the steering spindle in the axle hole, be equipped with oil duct hole intercommunication in the pump body and turn to axle hole one side, turn to and be equipped with the bearing between axle hole opposite side and the steering spindle, be equipped with the skeleton oil blanket between oil duct hole and the bearing, be equipped with follow-up stop device between skeleton oil blanket and the bearing, follow-up stop device pastes tight skeleton oil blanket on one side, and the inner circle of tight bearing is pasted to follow-up stop device opposite side, the utility model discloses have reliable structure, mutually noninterfere.

Description

Oil seal limiting device for steering oil pump framework

Technical Field

The utility model belongs to the technical field of the steering pump, more specifically relate to a steering oil pump skeleton oil blanket stop device.

Background

Most steering pumps during operation among the prior art, the skeleton oil blanket produces the normal pressure through the rubber in the pump body outside and the interference fit of pump body size, produce frictional force through pressure and coefficient of friction and prevent that the skeleton oil blanket from removing, when the normal pressure of the pump body and coefficient of friction are less, there is pressure in the pump body when power steering oil pump operation, and pressure is greater than the frictional force of skeleton oil blanket and is that the skeleton oil blanket can remove until hugging closely the bearing to the bearing end, because the inner circle of bearing is in high-speed rotation state and must produce wearing and tearing and produce the card stagnation of piece granule at skeleton oil blanket oil lip department, lead to sealed inefficacy.

The patent number 2011204279684 is named as a Chinese utility model patent of a steering oil pump framework oil seal limiting device, and the technical scheme disclosed by the patent number is that the skeleton oil seal and the bearing are added with check rings so far to realize the stopping of the skeleton oil seal. However, the arrangement of the aperture of the retainer ring is too large, so that only the upper part of the framework oil seal is blocked, but the lower part of the framework oil seal still moves towards the bearing; the aperture of the retainer ring is too small, so that the retainer ring and the inner ring of the bearing are rubbed, and the service life of the bearing is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a reliable structure, mutually noninterfere, end position effectual, long service life's steering oil pump skeleton oil blanket stop device.

According to the utility model discloses an aspect, turn to oil pump skeleton oil blanket stop device includes the pump body and link up the steering shaft hole of the pump body left and right sides, be equipped with the steering spindle in the steering shaft hole, be equipped with oil duct hole intercommunication steering shaft hole one side in the pump body, turn to and be equipped with the bearing between shaft hole opposite side and the steering spindle, be equipped with the skeleton oil blanket between oil duct hole and the bearing, be equipped with follow-up stop device between skeleton oil blanket and the bearing, follow-up stop device pastes tight skeleton oil blanket in one side, the inner circle of tight bearing is pasted to follow-up stop device opposite side, follow-up stop device includes the outer lane, first locating part, second locating part and rotating device, first locating part fixed connection is in outer lane one side, the second locating part passes through rotating device and connects outer lane and first locating part, the second locating part sets.

In some embodiments, the inner ring of the first limiting member is bent inward by 90 ° to form a mounting hole, the diameter of the mounting hole is larger than the outer diameter of the steering shaft, and the diameter of the mounting hole is smaller than the outer diameter of the framework oil seal.

In some embodiments, the inner ring of the second limiting member is bent inward by 90 ° to form a fixing hole, and the fixing hole is in transition fit with the steering shaft.

In some embodiments, the rotating device includes a first rotating member connected to the outer ring and a second rotating member connected to the first limiting member, the first rotating member includes a first mounting member, a second mounting member, and a rotor, the rotor is disposed between the first mounting member and the second mounting member, and the second rotating member has the same structure as the first rotating member.

In some embodiments, the first limiting member is attached to the framework oil seal.

In some embodiments, the second retaining member abuts the bearing inner race.

Drawings

FIG. 1 is a schematic structural view of a steering oil pump framework oil seal limiting device of the present invention;

FIG. 2 is a schematic structural view of a follow-up limiting device of the oil seal limiting device of the steering oil pump framework of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

The present invention will be further described with reference to the following embodiments.

As shown in FIG. 1, turn to 7 stop device of oil pump skeleton oil blanket include the pump body 1 and link up the axle hole 2 that turns to of the 1 left and right sides of the pump body, turn to and be equipped with steering spindle 3 in the axle hole 2, be equipped with oil duct hole 4 intercommunication in the pump body 1 and turn to axle hole 2 one side, turn to and be equipped with bearing 6 between axle hole 2 opposite side and the steering spindle 3, be equipped with skeleton oil blanket 7 between oil duct hole 4 and the bearing 6, be equipped with follow-up stop device 8 between skeleton oil blanket 7 and the bearing 6, follow-up stop device 8 one side pastes tight skeleton oil blanket 7, the inner circle of tight bearing 6 is pasted to 8 opposite sides of follow. The framework oil seal 7 and the bearing 6 are thoroughly separated by arranging the follow-up limiting device 8, and the framework oil seal 7 is prevented from contacting the bearing 6.

As shown in fig. 2, the follow-up limiting device 8 includes an outer ring 81, a first limiting member 82, a second limiting member 83 and a rotating device 84, the first limiting member 82 is fixedly connected to one side of the outer ring 81, the second limiting member 83 is connected to the outer ring 81 and the first limiting member 82 through the rotating device 84, the second limiting member 83 is disposed on the other side of the outer ring 81, and the second limiting member 83 can rotate relative to the outer ring 81 and the first limiting member 82. The framework oil seal 7 is separated by the first limiting piece 82, and the inner ring of the bearing 6 is connected by the second limiting piece 83, so that the framework oil seal 7 and the bearing 6 are thoroughly separated, and meanwhile, the framework oil seal 7 cannot move to be in contact with the bearing 6 after being pressed because of being tightly attached to each other. The outer race 81 is mounted in the groove.

The first limiting member 82 is attached to the framework oil seal 7. The inner ring of the bearing 6 is connected by the second stopper 83, thus completely separating the skeleton oil seal 7 from the bearing 6.

The second limiting part 83 is attached to the inner ring of the bearing 6, and the second limiting part 83 is connected with the inner ring of the bearing 6, so that the framework oil seal 7 and the bearing 6 are thoroughly separated, and meanwhile, the framework oil seal 7 cannot move to be in contact with the bearing 6 after being pressed due to the fact that the second limiting part 83 is attached to the bearing 6.

The inner ring of the first stopper 82 is bent inward by 90 ° to form a mounting hole 821, the aperture of the mounting hole 821 is larger than the outer diameter of the steering shaft 3, and the aperture of the mounting hole 821 is smaller than the outer diameter of the framework oil seal 7. The aperture of the mounting hole 821 is larger than the outer diameter of the steering shaft 3, and the aperture of the mounting hole 821 is smaller than the outer diameter of the framework oil seal 7, so that the first limiting part 82 and the framework oil seal 7 are relatively static, and the framework oil seal 7 is prevented from moving.

The inner ring of the second limiting member 83 is bent inward by 90 degrees to form a fixing hole 831, and the fixing hole 831 is in transition fit with the steering shaft 3. The fixing hole 831 is in transition fit with the steering shaft 3, so that the second limiting piece 83 and the steering shaft 3 can rotate synchronously, and the second limiting piece 83 and the inner ring of the bearing 6 can rotate synchronously and keep relatively static.

As shown in fig. 3, the rotating device 84 includes a first rotating member 841 connected to the outer ring 81 and a second rotating member 842 connected to the first limiting member 82, the first rotating member 841 includes a first mounting member 843, a second mounting member 844 and a rotor 845, the rotor 845 is disposed between the first mounting member 843 and the second mounting member 844, and the second rotating member 842 has the same structure as the first rotating member 841.

When in use, the inner ring is arranged in the groove, the first limiting piece 82 and the framework oil seal 7 are relatively static, and the framework oil seal 7 is prevented from moving; the second limiting piece 83 and the steering shaft 3 can rotate synchronously, the second limiting piece 83 and the inner ring of the bearing 6 can rotate synchronously to keep relatively static, the framework oil seal 7 and the bearing 6 are thoroughly separated and do not interfere with each other through the arrangement, friction with the inner ring of the bearing 6 is avoided, and using equipment is improved.

The foregoing is only a few embodiments of the present invention, and it should be noted that, for those skilled in the art, other modifications and improvements can be made without departing from the inventive concept of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A steering oil pump framework oil seal limiting device is characterized by comprising a pump body and steering shaft holes penetrating through the left side and the right side of the pump body, a steering shaft is arranged in the steering shaft hole, an oil passage hole is arranged in the pump body and is communicated with one side of the steering shaft hole, a bearing is arranged between the other side of the steering shaft hole and the steering shaft, a framework oil seal is arranged between the oil passage hole and the bearing, a follow-up limiting device is arranged between the framework oil seal and the bearing, one side of the follow-up limiting device is tightly attached to the framework oil seal, the other side of the follow-up limiting device clings to the inner ring of the bearing, the follow-up limiting device comprises an outer ring, a first limiting piece, a second limiting piece and a rotating device, the first limiting piece is fixedly connected to one side of the outer ring, the second limiting piece is connected with the outer ring and the first limiting piece through a rotating device, the second limiting piece is arranged on the other side of the outer ring and can rotate relative to the outer ring and the first limiting piece.

2. The oil seal limiting device for the framework of the steering oil pump as claimed in claim 1, wherein the inner ring of the first limiting member is bent inward by 90 degrees to form a mounting hole, the aperture of the mounting hole is larger than the outer diameter of the steering shaft, and the aperture of the mounting hole is smaller than the outer diameter of the framework oil seal.

3. The oil seal limiting device for the steering oil pump framework as claimed in claim 2, wherein the inner ring of the second limiting member is bent inward by 90 ° to form a fixing hole, and the fixing hole is in transition fit with the steering shaft.

4. The oil seal limiting device for the steering oil pump framework as claimed in claim 3, wherein the rotating device comprises a first rotating member connected with the outer ring and a second rotating member connected with the first limiting member, the first rotating member comprises a first mounting member, a second mounting member and a rotor, the rotor is arranged between the first mounting member and the second mounting member, and the structure of the second rotating member is the same as that of the first rotating member.

5. The device for limiting the oil seal of the framework of the steering oil pump as claimed in claim 4, wherein the first limiting member is attached to the framework oil seal.

6. The oil seal limiting device for the steering oil pump framework as claimed in claim 5, wherein the second limiting member is attached to the bearing inner ring.