CN216430817U

CN216430817U - Rotary connector

Info

Publication number: CN216430817U
Application number: CN202122991041.XU
Authority: CN
Inventors: 仲浩洁; 宋琦
Original assignee: Changzhou Tongmin Machinery Technology Co ltd
Current assignee: Changzhou Tongmin Machinery Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-03
Anticipated expiration: 2031-11-30

Abstract

The utility model belongs to the technical field of hydraulic pressure connecting piece equipment and specifically relates to a rotary connector is related to, the tip of public end joint inserts female end joint, female end joint is last to be equipped with at least one and radially runs through the ball mounting hole of wall, the corresponding position department with the inboard drill way of ball mounting hole of public end joint is equipped with the ball mounting groove, the ball mounting groove along the radial setting of public end joint on the surface of public end joint, be equipped with the ball in the ball mounting groove, the ball contacts with the tank bottom of ball mounting groove and the internal surface of female end joint respectively. The utility model discloses retrench the ball bearing structure among the prior art, cancelled ball bearing's inner circle and outer lane, offered the ball mounting groove on the surface of public end joint, the ball directly sets up in the ball mounting groove, and whole swivelling joint's volume reduces greatly like this, and it is more convenient to install and maintain, and the cost obviously reduces, and the swivelling joint ware of little volume is higher to the inside suitability of the very nervous oil circuit in space simultaneously.

Description

Rotary connector

Technical Field

The utility model belongs to the technical field of the hydraulic pressure connecting piece technique and specifically relates to a rotary connector is related to.

Background

The rotary connector is a transition device for guiding an oil path or an air path into a rotary mechanism rotating at a high speed to control and distribute the oil path or the air path in the rotary mechanism, and in order to ensure the stability of the internal pressure of the rotary connector and the efficiency of the oil path or the air path introduction, the internal leakage problem in the rotary connector needs to be prevented. The rotary connector is applied to various large mechanical arms, wherein the rotary connector is commonly used at the tail part of large arms of cranes and loaders, and the existing rotary connector has a complex structure, particularly the prior patent numbers of the company: CN202110435127.6, use thrust bearing as the driving medium in the connector, increased corresponding sealing member simultaneously, the unit price of import spare is 1200 yuan, and the unit price of domestic spare reaches 800 yuan, and the cost is very high, and the volume is also very big, lies in the cooperation and the installation of other spare parts and easily produces the problem.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a rotary connector, which is small in size, convenient to install and maintain, and low in production cost.

In order to solve the technical problem, the utility model discloses a technical scheme as follows: the utility model provides a rotary connector, includes public end joint and female end joint, the tip of public end joint inserts in female end joint, be equipped with at least one ball mounting hole that radially runs through the wall on female end joint, the corresponding position department with the inboard drill way of ball mounting hole of public end joint is equipped with the ball mounting groove, the ball mounting groove is followed the radial setting of public end joint is in on the surface of public end joint, be equipped with the ball in the ball mounting groove, the ball contacts with the tank bottom of ball mounting groove and female end joint's internal surface respectively.

In the above technical scheme, the outer surface of the male end connector is provided with a first step and a second step, and the inner surface of the female end connector is provided with a third step.

In the above technical scheme, a self-lubricating bearing is arranged between the male end connector and the female end connector, and two sides of the self-lubricating bearing are respectively matched with the first step and the third step.

In the above technical scheme, a dust-proof sleeve is arranged between the second step and the outer edge of the female end joint.

And the inner surface of the female end joint is provided with an annular ball guide groove at a position corresponding to the ball mounting groove, and two sides of the ball are respectively embedded in the ball guide groove and the ball mounting groove.

In the technical scheme, a sealing ring is arranged between the male end connector and the female end connector, and the sealing ring is arranged in a sealing ring mounting groove in the inner wall surface of the female end connector.

In the technical scheme, a plug is arranged at the orifice of the ball mounting hole.

In the above technical scheme, the inner wall surface of the male end joint and the outer wall surface of the female end joint at the joint of the male end joint and the female end joint are both provided with heat treatment layers.

To sum up, adopt the utility model discloses a technical scheme compares the beneficial effect that has in traditional technological means and is: the utility model discloses retrench the ball bearing structure among the prior art, cancelled ball bearing's inner circle and outer lane, offered the ball mounting groove on the surface of public end joint, the ball directly sets up in the ball mounting groove, whole swivelling joint's volume reduces greatly like this, it is also more convenient to install and maintain, the cost obviously reduces, by 800 before fall to 300 more, the swivelling joint of while small volume is higher to the inside suitability of the very nervous oil circuit in space.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention in another direction;

fig. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic sectional view A-A of FIG. 3;

FIG. 5 is a schematic cross-sectional view B-B of FIG. 3;

fig. 6 is a schematic perspective view of the female end joint of the present invention;

FIG. 7 is a schematic perspective view of the present invention with the female connector removed;

the reference numbers are as follows: a male end fitting 100; a ball mounting groove 110; a first step 120; a second step 130; a female end fitting 200; ball mounting holes 210; a third step 220; the ball guide grooves 230; a seal ring mounting groove 240; a plug 300; a ball 400; a self-lubricating bearing 500; the dustproof sleeve 600: and a seal ring 700.

Detailed Description

In the following, the preferred embodiments of the present invention will be explained, and various changes and modifications can be made by workers without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

The invention will be further described with reference to the following drawings:

as shown in fig. 1 to 7, a rotary connector includes a male terminal 100 and a female terminal 200, wherein an end of the male terminal 100 is inserted into the female terminal 200, the female terminal 200 is provided with at least one ball mounting hole 210 radially penetrating a wall surface, a ball mounting groove 110 is provided at a position of the male terminal 100 corresponding to an inner side hole of the ball mounting hole 210, the ball mounting groove 110 is radially provided on an outer surface of the male terminal 100 along the male terminal 100, a ball 400 is provided in the ball mounting groove 110, the ball 400 is respectively in contact with a groove bottom of the ball mounting groove 110 and an inner surface of the female terminal 200, the ball mounting hole 210 faces the ball mounting groove 110, the ball 400 falls into the ball mounting groove 110 from the ball mounting hole 210 during installation, and a plurality of balls 400 surround an outer circumference.

As shown in fig. 4, the male terminal 100 is provided with a first step 120 and a second step 130 on the outer surface thereof, and the female terminal 200 is provided with a third step 220 on the inner surface thereof.

As shown in fig. 4, a self-lubricating bearing 500 is disposed between the male end connector 100 and the female end connector 200, and both sides of the self-lubricating bearing 500 are respectively engaged with the first step 120 and the third step 220.

A dust-proof sleeve 600 is arranged between the second step 130 and the outer edge of the female end joint 200, and the self-lubricating bearing 500 and the dust-proof sleeve 600 are conveniently installed due to the arrangement of the steps.

As shown in fig. 4, 5 and 7, an annular ball guide groove 230 is provided at a position corresponding to the ball mounting groove 110 on the inner surface of the female terminal fitting 200, and both sides of the ball 400 are respectively fitted in the ball guide groove 230 and the ball mounting groove 110.

As shown in fig. 4, a seal ring 700 is provided between the male terminal 100 and the female terminal 200, and the seal ring 700 is fitted in a seal ring fitting groove 240 formed in an inner wall surface of the female terminal 200.

As shown in fig. 1, 3, 4 and 5, a plug 300 is disposed at an opening of the ball mounting hole 210, and after the ball is mounted, the plug 300 is used to plug the opening, but other sealing structures may be used.

The inner wall surface of the male end connector 100 at the joint of the male end connector 100 and the female end connector 200 and the outer wall surface of the female end connector 200 are both provided with heat treatment layers, and the hardness of the inner surface of the male end connector 100 and the hardness of the outer surface of the male end connector 200 reach HRC55 +/-3 through local high-frequency heat treatment, so that the strength of a rotating part can be ensured while the structure is simplified.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary connector, characterized by: including public end joint (100) and female end joint (200), the tip of public end joint (100) inserts in female end joint (200), be equipped with ball mounting hole (210) that at least one radially runs through the wall on female end joint (200), the corresponding position department with ball mounting hole (210) inboard drill way of public end joint (100) is equipped with ball mounting groove (110), ball mounting groove (110) are followed the radial setting of public end joint (100) is in on the surface of public end joint (100), be equipped with ball (400) in ball mounting groove (110), ball (400) contact with the tank bottom of ball mounting groove (110) and the internal surface of female end joint (200) respectively.

2. The rotary connector of claim 1, wherein: the outer surface of the male end connector (100) is provided with a first step (120) and a second step (130), and the inner surface of the female end connector (200) is provided with a third step (220).

3. The rotary connector of claim 2, wherein: a self-lubricating bearing (500) is arranged between the male end connector (100) and the female end connector (200), and two sides of the self-lubricating bearing (500) are respectively matched with the first step (120) and the third step (220).

4. The rotary connector of claim 2, wherein: and a dustproof sleeve (600) is arranged between the second step (130) and the outer edge of the female end joint (200).

5. The rotary connector of claim 1, wherein: an annular ball guide groove (230) is formed in the position, corresponding to the ball mounting groove (110), of the inner surface of the female end joint (200), and two sides of the ball (400) are respectively embedded in the ball guide groove (230) and the ball mounting groove (110).

6. The rotary connector of claim 1, wherein: a sealing ring (700) is arranged between the male end connector (100) and the female end connector (200), and the sealing ring (700) is arranged in a sealing ring mounting groove (240) on the inner wall surface of the female end connector (200).

7. The rotary connector of claim 1, wherein: and a plug (300) is arranged at the orifice of the ball mounting hole (210).

8. The rotary connector of claim 1, wherein: and heat treatment layers are arranged on the inner wall surface of the male end connector (100) and the outer wall surface of the female end connector (200) at the joint of the male end connector (100) and the female end connector (200).