Conductive slip ring with labyrinth seal structure

Abstract

The utility model discloses a conductive slip ring with a labyrinth seal structure, and relates to the technical field of conductive slip rings. The sliding ring solves the problems that a traditional sliding ring is prone to being invaded by pollutants in a complex environment, and the sealing performance is insufficient. The slip ring is composed of a ring body assembly, an electric brush assembly, a combined support, a rotating bearing, a positioning disc, a dustproof end cover, a flange end cover, a baffle and the like, and a labyrinth sealing structure between a stator and a rotor is formed. Axial and radial gaps between the dustproof end cover and the baffle and between the dustproof end cover and the positioning disc are strictly controlled within 1 mm so as to efficiently block invasion of external substances such as dust, metal particles and moisture. The labyrinth seal design obviously improves the reliability of the slip ring and prolongs the service life of the slip ring, avoids short-circuit faults caused by invasion of foreign matters, and reduces internal friction loss at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to conductive slip ring technical field, concretely is a conductive slip ring of labyrinth seal structure. BACKGROUND

[0002] Conductive slip ring is an important rotating electrical transmission device widely used in industrial automation, energy equipment, aerospace and military fields, its main function is to realize the electrical signal and power transmission between the stator and rotor in rotating equipment. In modern industrial production, with the continuous improvement of equipment complexity, higher requirements are put forward for the reliability, sealing and life of conductive slip ring. Conductive slip ring transmits electrical energy or signal from fixed part to rotating part through sliding friction contact of brush assembly and ring body assembly, forming 360° unlimited electrical connection. The friction pair design of slip ring stator part (brush) and rotor part (ring piece) is the core of its work. Bearing support structure enables the stator and rotor to realize smooth relative rotation, ensuring the stability and continuity of transmission. Although conductive slip ring is widely used, it still faces many challenges during operation, for example, in actual operation, dust, moisture, metal particles and other pollutants in the external environment are easy to invade the inside of the slip ring, which can form a short circuit path between the internal key components (such as brush and ring piece), causing equipment failure. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides the following technical scheme: a conductive slip ring with a labyrinth seal structure, comprising a ring body assembly, a brush assembly, a combined bracket, a rotating bearing, a positioning disc, a first dustproof end cover, a second dustproof end cover, a flange end cover and a baffle; the first dustproof end cover and the second dustproof end cover are fixed on the ring body assembly, the baffle and the positioning disc are fixed on the combined bracket, and the stator and the rotor at both ends of the conductive slip ring form a labyrinth seal structure with each other, wherein the stator and the rotor at both ends of the conductive slip ring are respectively the ring body assembly and the combined bracket.

[0004] Preferably, the first dustproof end cover is fixed at the lead end of the ring body assembly, and the baffle is fixed on the combined bracket.

[0005] Preferably, the second dustproof end cover is fixed at the pouring end of the ring body assembly, and the positioning disc is fixed on the combined bracket.

[0006] Preferably, the first dustproof end cover and the baffle, and the second dustproof end cover and the positioning disc form a labyrinth seal structure with each other.

[0007] Preferably, the axial and radial clearances between the first dustproof end cover and the baffle, and the second dustproof end cover and the positioning disc are all controlled within one millimeter.

[0008] Preferably, the rotating bearing is composed of a first bearing and a second bearing.

[0009] Compared with the prior art, the utility model has the following beneficial effects: (1) the labyrinth seal structure of the utility model effectively prevents the invasion of dust, metal particles and moisture and other pollutants into the inside of the slip ring through the design of complex multilayer path, significantly reduces the damage of the pollutants to the internal key components; (2) the utility model avoids the short circuit failure caused by the invasion of foreign matters such as metal particles from outside, ensures the safe operation of the slip ring in the harsh environment, and greatly improves the working reliability of the equipment; (3) the sealing design of the utility model reduces the abrasion and corrosion caused by dust and pollutants, reduces the abrasion of the core components, significantly prolongs the service life of the slip ring, and reduces the replacement and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the rotating function schematic view of the conductive slip ring of the utility model.

[0011] Figure 2 It is the working principle schematic view of the conductive slip ring of the utility model.

[0012] Figure 3 It is the partial enlarged schematic view of the conductive slip ring of the utility model Figure I .

[0013] Figure 4 It is the partial enlarged schematic view of the conductive slip ring of the utility model Figure II .

[0014] Figure 5 It is the sectional view of the conductive slip ring of the utility model.

[0015] In the drawing: 1-ring assembly; 2-second dustproof end cover; 3-positioning disc; 4-combination support; 5-first bearing; 6-brush assembly; 7-second bearing; 8-baffle; 9-first dustproof end cover; 10-flange end cover. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be further explained in combination with the specific embodiment. Figures 1-5

[0017] ​The utility model provides a kind of conductive slip ring of labyrinth seal structure, including ring body assembly 1, brush assembly 6, combined support 4, rotating bearing, locating disc 3, first dustproof end cover 9, second dustproof end cover 2, flange end cover 10, baffle 8;First dustproof end cover 9 and second dustproof end cover 2 are fixed on ring body assembly 1, baffle 8 and locating disc 3 are fixed on combined support 4, the stator and rotor of conductive slip ring both ends form labyrinth seal structure each other, wherein the stator and rotor of conductive slip ring both ends are ring body assembly 1 and combined support 4 respectively.First dustproof end cover 9 is fixed in lead end of ring body assembly 1, baffle 8 is fixed on combined support 4.Second dustproof end cover 2 is fixed in pouring end of ring body assembly 1, locating disc 3 is fixed on combined support 4.Labyrinth seal structure is formed each other between first dustproof end cover 9 and baffle 8, second dustproof end cover 2 and locating disc 3.The axial and radial clearance of first dustproof end cover 9 and baffle 8, second dustproof end cover 2 and locating disc 3 is controlled within one millimeter.Rotating bearing is composed of first bearing 5 and second bearing 7.

[0018] Conductive slip ring is supported by first bearing 5 and second bearing 7, realizes the stable motion between the stator and rotor of relative rotation, and brush assembly 6 on combined support 4 is contacted and rubbed with ring piece on ring body assembly 1 by brush wire, to transmit electric energy or signal to rotating component, when conductive slip ring operates, external contaminants (such as dust, particles, liquid) try to invade inside, and labyrinth seal effectively prevents contaminants from entering core component by tortuous path, strict gap and multilayer structure.Second dustproof end cover 2 and first dustproof end cover 9 are fixed in rotating end (ring body assembly 1) to provide primary seal;Baffle 8 and locating disc 3 are fixed in stator end (combined support 4), to form the other end of labyrinth path.

[0019] The working principle of conductive slip ring: conductive slip ring is supported by rotating bearing in rotating part and stationary part, forms n±360° unlimited rotation, relies on friction pair between rotating part and stationary part, realizes power and signal transmission between rotating part and stationary part, and its working principle is as shown in Figure 2 During actual use, extraneous matter is easy to enter the inside of conductive slip ring, especially metal extraneous matter, which can even cause short-circuit failure of conductive slip ring, and this is one of common working failure modes of conductive slip ring, which seriously affects the conductivity and service life of conductive slip ring.Through the design of labyrinth seal structure, the risk that conductive slip ring is easily invaded by extraneous matter is solved, and the reliability and safety of conductive slip ring are effectively improved.

Claims

1. An electrically conductive slip ring of a labyrinth seal structure, characterized by: The application relates to a dustproof conductive slip ring, which comprises a ring body assembly (1), a brush assembly (6), a combined support (4), rotating bearings, a positioning disc (3), a first dustproof end cover (9), a second dustproof end cover (2), a flange end cover (10) and a baffle (8); the first dustproof end cover (9) and the second dustproof end cover (2) are fixed on the ring body assembly (1), the baffle (8) and the positioning disc (3) are fixed on the combined support (4), and the stator and the rotor at the two ends of the conductive slip ring form a labyrinth sealing structure, wherein the stator and the rotor at the two ends of the conductive slip ring are respectively the ring body assembly (1) and the combined support (4).

2. A conductive slip ring of a labyrinth seal structure according to claim 1, characterized in that: The first dustproof end cover (9) is fixed at a lead end of the ring body assembly (1), and the baffle (8) is fixed on the combined support (4).

3. A conductive slip ring of a labyrinth seal structure according to claim 2, characterized in that: The second dustproof end cover (2) is fixed at a pouring end of the ring body assembly (1), and the positioning disc (3) is fixed on the combined support (4).

4. A conductive slip ring of the labyrinth seal structure according to claim 3, characterized in that: The first dustproof end cover (9) and the baffle (8), and the second dustproof end cover (2) and the positioning disc (3) form a labyrinth sealing structure.

5. A conductive slip ring of the labyrinth seal structure according to claim 4, characterized in that: The axial and radial clearances of the first dustproof end cover (9) and the baffle (8), and the second dustproof end cover (2) and the positioning disc (3) are controlled within 1mm.

6. A conductive slip ring of the labyrinth seal structure according to claim 5, characterized in that: The rotating bearings are composed of a first bearing (5) and a second bearing (7).

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