CN218677917U - Liquid slip ring - Google Patents

Abstract

The utility model discloses a liquid slip ring, including shell, stator main shaft, rotor main shaft and liquid conducting medium, stator main shaft and rotor main shaft are close to a side end face each other and form the cavity in the shell, it has liquid conducting medium to fill in the cavity, the rotor main shaft is provided with the bearing outward, the bearing forms the seal chamber that is used for blockking liquid conducting medium to flow in the shell towards stator main shaft one side, be provided with the magnet that the cover was located outside the rotor main shaft and adsorb in magnet and the magnetic fluid that fills in the seal chamber; the utility model discloses the leakproofness is reliable, and the moment of torsion is little, the rotational speed is fast, long service life.

Description

Liquid slip ring

Technical Field

The utility model relates to a lead electrical slip ring technical field, especially relate to a liquid sliding ring.

Background

The conductive slip ring belongs to the application range of electric contact sliding connection, is also called slip ring, or called rotary joint, rotary electric interface, slip ring, reflux ring and adapter, and is a precise power transmission device for realizing image, data signal and power transmission by two relative rotating mechanisms. It is particularly suitable for use in locations where unlimited continuous rotation is required, while power or data is transmitted from a fixed position to a rotating position.

Chinese patent that prior application patent publication number is CN208655908U discloses a liquid electrical slip ring, including shell, stator main shaft, stator insulating sleeve, rotor main shaft, rotor insulating sleeve and liquid conducting medium, one side that stator insulating sleeve was overlapped towards the rotor insulating sleeve is provided with the lip that blocks that is used for blockking the outflow of liquid conducting medium, one side of rotor insulating sleeve is provided with the recess that can hold the lip that blocks, the one end that blocks the lip is provided with first sealing member in the recess, one side that blocks the lip is kept away from to first sealing member is provided with the elasticity foaming cotton in the recess.

The problems presented in the above patents: the existing liquid slip ring stator and the rotor relatively rotate, the blocking lip and the groove of the stator insulating sleeve and the rotor insulating sleeve are in sealing fit, but the contact surfaces of the stator insulating sleeve and the rotor insulating sleeve are hard contact surfaces, friction force is large, torque is large, the rotating speed of the liquid slip ring is influenced, and the structure of the liquid slip ring is improved based on the problem so as to improve the performance of the liquid slip ring.

Disclosure of Invention

The utility model aims at overcoming the defects existing in the prior art and providing a liquid slip ring.

In order to achieve the above purpose, the utility model provides a following technical scheme: the liquid slip ring comprises a shell, a stator main shaft, a rotor main shaft and a liquid conductive medium, wherein a cavity is formed in the shell by the end face of one side, close to each other, of the stator main shaft and the rotor main shaft, the liquid conductive medium is filled in the cavity, a bearing is arranged outside the rotor main shaft, a sealing cavity used for blocking the liquid conductive medium from flowing out is formed in the shell by the side, facing the stator main shaft, of the bearing, and a magnet sleeved outside the rotor main shaft and magnetic liquid adsorbed to the magnet and filling the sealing cavity are arranged in the sealing cavity.

As an optimized technical scheme of the utility model, the magnet outer lane is laminated with the shell inner wall mutually, it has above-mentioned magnetism liquid to fill between magnet inner lane and the rotor spindle outer wall.

As an optimal technical scheme of the utility model, the magnet inner circle is laminated with the rotor spindle outer wall mutually, it has above-mentioned magnetism liquid to fill between magnet outer lane and the shell inner wall.

As an optimized technical scheme of the utility model, the magnetism liquid forms after through magnetic, grease, oleic acid stirring, the magnetism liquid is colloidal.

As a preferred technical scheme of the utility model, the up end and/or the lower terminal surface of magnet are provided with the magnetic shoe.

As an optimized technical scheme of the utility model, be provided with the gasket between the magnetic fluid of magnetism boots upper end and the bearing in sealed intracavity.

As a preferred technical scheme of the utility model, a side end face that the stator main shaft was kept away from to the bearing is provided with the cover and locates the outer sealed cotton of rotor main shaft, is used for being fixed in the bearing gland on the bearing with the sealed cotton, one side that the shell is close to the bearing gland is provided with can carry out spacing kink to the bearing gland.

As a preferred technical scheme of the utility model, bearing cover includes upper cover and lower cover, the upper cover is arranged in to the lower cover and places above-mentioned sealed cotton between lower cover inner circle and the rotor spindle, be provided with the sealing member that is located the sealed cotton top between lower cover and the upper cover.

As a preferred technical scheme of the utility model, the outer wall that rotor spindle was provided with retaining ring and retaining ring in the one end of shell closely laminates with the shell inner wall, the retaining ring is used for separating the liquid conducting medium in the magnetic fluid of above-mentioned sealed intracavity and the cavity.

As an optimal technical scheme of the utility model, the retaining ring is provided with the shock insulator in seal chamber one side, the shock insulator is used for separation liquid conducting medium and magnetic fluid.

To sum up, the beneficial effects of the utility model are that: it has liquid conductive medium to fill between rotor spindle and the stator spindle, rotor spindle and stator spindle's contact terminal surface does not directly contact, the friction is little, the moment of torsion is little, thereby improve liquid sliding ring rotational speed, liquid sliding ring rotates conductive medium and will receives the effect of centrifugal force and disperse all around, flow from the clearance department easily, consequently this application sets up magnet and fills the magnetic fluid in the sealed cavity, realize the full-seal in the sealed cavity, thereby realize zero leakage, make liquid conductive medium be located the cavity that forms between rotor spindle and the stator spindle all the time, prolong liquid sliding ring's life, improve the wholeness ability by a wide margin.

Drawings

FIG. 1 is a schematic structural diagram of the first embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural diagram of the second embodiment;

fig. 4 is an enlarged view of a portion B of fig. 3.

Reference numerals: 1. a housing; 2. a stator main shaft; 3. a rotor spindle; 4. a liquid conductive medium; 5. a cavity; 6. a bearing; 7. sealing the cavity; 8. a magnet; 9. magnetic liquid; 10. a magnetic shoe; 11. a gasket; 12. sealing cotton; 13. an upper cover; 14. a lower cover; 15. a bending section; 16. a retainer ring; 17. a spacer; 18. a bearing gland; 19. and a seal.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

A liquid sliding ring as shown in fig. 1 to 4, including shell 1, stator spindle 2, rotor spindle 3 and liquid conducting medium 4, liquid conducting medium 4 is liquid mercury or gallium alloy, stator spindle 2 and rotor spindle 3 are close to one side terminal surface each other and form cavity 5 in shell 1, cavity 5 is filled with liquid conducting medium 4, rotor spindle 3 is provided with bearing 6 outward, bearing 6 forms the seal chamber 7 that is used for blockking liquid conducting medium 4 to flow out in shell 1 towards stator spindle 2 one side, be provided with the cover in seal chamber 7 and locate the outer magnet 8 of rotor spindle 3 and adsorb in magnet 8 and with the magnetic fluid 9 that seal chamber 7 was filled with, bearing 6 is provided with one at least in this embodiment.

It has liquid conducting medium 4 to fill between rotor spindle 3 and the stator spindle 2, rotor spindle 3 and stator spindle 2's contact end face does not directly contact, the friction is little, the moment of torsion is little, thereby improve liquid sliding ring rotational speed, liquid sliding ring rotates conducting medium and will receives the effect of centrifugal force and disperse all around, flow from clearance department easily, consequently, this application sets up magnet 8 and fills magnetic fluid 9 in seal chamber 7, realize the full-seal in will seal chamber 7, thereby realize zero leakage, make liquid conducting medium 4 be located the cavity 5 that forms between rotor spindle 3 and the stator spindle 2 all the time, prolong liquid sliding ring's life, improve the wholeness ability by a wide margin.

8 outer lane of magnet and the laminating of 1 inner wall mutually of shell, it has magnetic liquid 9 to fill between 8 inner circles of magnet and the 3 outer walls of rotor spindle, magnetic liquid 9 passes through the magnetic, the grease in this embodiment, form after the oleic acid stirring, magnetic liquid 9 is the setting of this structure of gelatineous and can guarantees sealed reliability, realize zero leakage, magnetic liquid 9 and 3 outer wall direct contact of rotor spindle simultaneously, because magnetic liquid 9 is the gelatineous, the flexible mixture contacts with rotor spindle 3, the friction is little, the moment of torsion is little, the rotational speed is fast, compare the liquid sliding ring on the market mutually, the better and long service life of performance.

The upper end face and/or the lower end face of the magnet 8 are/is provided with the magnetic shoes 10, the magnetic shoes 10 are metal sheets with good magnetic conductivity, and the magnetic liquid 9 at the positions of the magnetic shoes 10 is dense, so that the sealing performance of the magnetic shoes can be effectively improved, and the service life of the magnetic shoes can be prolonged.

A gasket 11 is arranged between the magnetic liquid 9 at the upper end of the magnetic shoe 10 and the bearing 6 in the sealing cavity 7.

The end face of one side of the bearing 6 far away from the stator main shaft 2 is provided with a sealing cotton 12 sleeved outside the rotor main shaft 3 and a bearing 6 gland used for fixing the sealing cotton 12 on the bearing 6, and one side of the shell 1 close to the bearing 6 gland is provided with a bending part 15 capable of limiting the bearing 6 gland.

The bearing 6 gland comprises an upper cover 13 and a lower cover 14, the lower cover 14 is arranged in the upper cover 13, the sealing cotton 12 is arranged between the inner ring of the lower cover 14 and the rotor spindle 3, a sealing element 19 positioned at the top of the sealing cotton 12 is arranged between the lower cover 14 and the upper cover 13, the sealing element 19 is a primary seal in the embodiment, external liquid and dust are prevented from entering a liquid slip ring, the anti-corrosion effect is achieved, the sealing cotton 12 is a secondary seal, when the sealing element 19 fails, the sealing cotton 12 can continuously realize sealing, and the sealing cotton 12 can be soaked in lubricating oil for use.

One end of the rotor spindle 3 in the housing 1 is provided with a retaining ring 16, the outer wall of the retaining ring 16 is tightly attached to the inner wall of the housing 1, the retaining ring 16 is a part of the rotor spindle 3, the retaining ring 16 is used for separating the magnetic liquid 9 in the sealed cavity 7 from the liquid conductive medium 4 in the cavity 5, the retaining ring 16 is provided with a spacer 17 on one side of the sealed cavity 7, the spacer 17 is used for separating the liquid conductive medium 4 from the magnetic liquid 9 and avoiding contact between the two as much as possible, and the main material of the spacer is wear-resistant plastic, such as PVC.

The difference between the second embodiment and the first embodiment is:

the inner ring of the magnet 8 is attached to the outer wall of the rotor spindle 3, and magnetic liquid 9 is filled between the outer ring of the magnet 8 and the inner wall of the shell 1.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a liquid sliding ring, includes shell, stator main shaft, rotor main shaft and liquid conducting medium, stator main shaft and rotor main shaft are close to a side end face each other and form the cavity in the shell, the cavity intussuseption is filled with liquid conducting medium, the rotor main shaft is provided with bearing, its characterized in that outward: the bearing is towards stator main shaft one side and forms the sealed chamber that is used for blockking liquid to lead dielectric medium outflow in the shell, be provided with the magnet of cover outside locating the rotor main shaft and adsorb the magnetic fluid that will seal the chamber and fill up in the magnet in the sealed chamber.

2. The liquid slip ring of claim 1, wherein: the magnet outer ring is attached to the inner wall of the shell, and the magnetic liquid is filled between the magnet inner ring and the outer wall of the rotor spindle.

3. The liquid slip ring of claim 1, wherein: the magnet inner ring is attached to the outer wall of the rotor spindle, and the magnetic liquid is filled between the magnet outer ring and the inner wall of the shell.

4. The liquid slip ring of claim 2 or 3, wherein: the magnetic liquid is formed by stirring magnetic powder, grease and oleic acid, and the magnetic liquid is colloidal.

5. The liquid traveler of claim 4, wherein: and magnetic shoes are arranged on the upper end surface and/or the lower end surface of the magnet.

6. The liquid slip ring of claim 5, wherein: and a gasket is arranged in the sealing cavity between the magnetic liquid at the upper end of the magnetic shoe and the bearing.

7. The liquid traveler of claim 1, wherein: the bearing is kept away from one side terminal surface of stator main shaft and is provided with the cover and locates the outer sealed cotton of rotor main shaft, be used for being fixed in the bearing gland on the bearing with the sealed cotton, one side that the shell is close to the bearing gland is provided with and carries out spacing kink to the bearing gland.

8. The liquid traveler of claim 7, wherein: the bearing gland comprises an upper cover and a lower cover, the lower cover is arranged in the upper cover, the sealing cotton is arranged between the inner ring of the lower cover and the rotor spindle, and a sealing element positioned at the top of the sealing cotton is arranged between the lower cover and the upper cover.

9. The liquid slip ring of claim 1, wherein: one end of the rotor spindle in the shell is provided with a check ring, the outer wall of the check ring is tightly attached to the inner wall of the shell, and the check ring is used for separating magnetic liquid in the sealing cavity and liquid conductive media in the cavity.

10. The liquid slip ring of claim 9, wherein: and a spacer is arranged on one side of the sealing cavity of the retainer ring and used for separating a liquid conductive medium and magnetic liquid.

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