CN211017690U

CN211017690U - Slip ring

Info

Publication number: CN211017690U
Application number: CN201922130514.XU
Authority: CN
Inventors: 谭富强; 王铎
Original assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Current assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-07-14
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a slip ring, including rotor and stator, the rotor include the axis of rotation and the electric conductor and the insulator of interval arrangement in the axis of rotation, the insulator includes the annular insulator body of circle and sets up the arch of insulator body outer wall, be equipped with the multiunit blade on insulator body's the outer wall. The slip ring has the advantages that the blades are arranged on the insulator of the slip ring, so that the air flow in the slip ring is increased, the heat dissipation efficiency of the slip ring is improved, and the service life of the slip ring is ensured.

Description

Slip ring

Technical Field

The utility model relates to a lead electrical slip ring technical field, concretely relates to sliding ring.

Background

The conductive slip ring is widely applied to effective and reliable electric connection between two parts which rotate relatively, and current between the parts is ensured to be transmitted by signals. The conductive slip ring mainly comprises a stator and a rotor, the conventional rotor is generally arranged in the device, and in the rotating process of the rotor, the electrical loss and the mechanical loss of the carbon brush can generate a large amount of heat and are difficult to dissipate, so that the temperature of the whole device is quickly increased, the temperature of the electric conductor and the carbon brush is increased, and the device is abnormal in work.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sliding ring has solved current sliding ring heat dissipation not good, appears the problem of work anomaly easily.

The utility model discloses a technical means as follows:

the slip ring comprises a rotor and a stator, wherein the rotor comprises a rotating shaft, and electric conductors and insulators which are arranged on the rotating shaft at intervals, the insulators comprise annular insulator bodies and protrusions arranged on the outer walls of the insulator bodies, and a plurality of blades are arranged on the outer walls of the insulator bodies.

Further, the electric conductor comprises an electric brush contact part capable of contacting with an electric brush and a spoke plate part used for installing the electric brush contact part on the rotating shaft, and the spoke plate part is provided with a ventilation and heat dissipation hole;

the outer diameter of the insulator body is smaller than that of the conductor, an annular separating sheet is further arranged on the outer wall of the insulator body, the separating sheet divides the outer wall of the insulator body into a blade area and a non-blade area along the axial direction, and the plurality of groups of blades are arranged on the blade area.

Further, the width of the brush contact part is larger than that of the spoke plate part, so that accommodating spaces are formed between two side faces of the spoke plate part and the inner side wall of the brush contact part on the corresponding side and the rotating shaft, part of the blade area of the insulator is arranged in the accommodating space corresponding to the blade area, and part of the non-blade area of the insulator is arranged in the accommodating space corresponding to the non-blade area.

Further, the blade is any one of a flat blade, a narrow arc blade, an arc blade, a wing-shaped blade and a flat curved backward blade.

Compared with the prior art, the sliding ring have following advantage, owing to set up the blade structure on insulator's outer wall, when the rotor rotated, the blade on the outer wall has increased the air flow in the sliding ring, and then has accelerated the heat dissipation in the sliding ring, has reduced the promotion of the interior temperature of sliding ring, and then has guaranteed the reliability of the work of sliding ring.

Drawings

FIG. 1 is a block diagram of a slip ring according to the present disclosure, including brush holder and rotor structures;

FIG. 2 is a front view of the insulator disclosed herein;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an axial view of the insulator;

FIG. 5 is a front view of the electrical conductor;

FIG. 6 is a cross-sectional view taken at B-B of FIG. 5;

fig. 7 is an axial view of the electrical conductor.

In the figure: 11. the brush holder comprises a brush holder body, 20, a rotating shaft, 21, a conductor, 22, an insulator, 23, a containing space, 220, an insulator body, 221, a protrusion, 222, blades, 223, a separating sheet, 224, a blade area, 225, a non-blade area, 210, a brush contact part, 211, a spoke plate part, 212, a ventilation and heat dissipation hole, 2101, the inner side wall of the brush contact part, 2110 and the side surface of the spoke plate part.

Detailed Description

As shown in fig. 1, 2, 3 and 4, the slip ring disclosed in the present invention comprises a rotor and a stator, the stator comprises a slip ring housing (not shown in the figure) and a brush holder 11, the brush holder 11 is fixed in the slip ring housing, a brush is fixed on the brush holder 11, the rotor comprises a rotating shaft 20 and a conductor 21 and an insulator 22 which are arranged on the rotating shaft 20 at intervals, the rotor is rotatably installed in the slip ring housing, the brush on the brush holder 11 contacts with the conductor 21 for transmitting power and data signals, the insulator 22 comprises a circular insulator body 220 and a protrusion 221 arranged on the outer wall of the insulator body 220, the protrusion 221 is used for ensuring an electrical gap and a creepage distance, a plurality of blades 222 are arranged on the outer wall of the insulator body 220 in the axial direction, the number of the blades is 6 in the figure, when the rotating shaft 20 drives the conductor 21 and the insulator 22 to rotate at a high speed, the centrifugal action of the blades 22 on the outer wall of the insulator body 220 increases the air flow within the slip ring housing, thereby accelerating heat dissipation within the slip ring and inhibiting temperature rise within the slip ring.

Further, as shown in fig. 5, 6 and 7, the electrical conductor 21 includes a brush contact portion 210 capable of contacting with a brush and a spoke portion 211 for mounting the brush contact portion 210 on the rotating shaft 20, the spoke portion 211 is provided with ventilation holes 212, and the number of the ventilation holes 212 can be selected according to the requirement, and is 12 in the figure; the outer diameter of the insulator body 220 is smaller than the outer diameter of the conductor 21, an annular partition 223 is further disposed on the outer wall of the insulator body 220, the partition 223 axially divides the outer wall of the insulator body 220 into a blade region 224 and a non-blade region 225, and the plurality of blades 222 are disposed on the blade region 224. The width of the brush contact portion 210 is greater than the width of the web portion 211, such that an accommodating space 23 is formed between the inner sidewall 2101 of the brush contact portion and the outer wall of the rotating shaft 20 on the same side as the two sides 2110 of the web portion, a portion of the blade region 224 of the insulator 22 is disposed in the accommodating space 23 opposite thereto, and a portion of the non-blade region 225 of the insulator 22 is disposed in the accommodating space opposite thereto. In this embodiment, since the outer wall of the insulator body 220 is provided with the separating plate 223, and the separating plate 223 axially separates the outer wall of the insulator body 220 into the blade area 224 and the non-blade area 225, when the slip ring works, the rotating shaft 20 drives the insulator 22 to rotate at a high speed, the centrifugal action of the blade area 224 causes a negative pressure to be generated in this area, and the non-blade area has no blades, so the pressure drop is small, therefore, the gas in the slip ring flows in sequence in the direction shown by the arrow in fig. 1 (the non-blade area-ventilation hole-blade area, which is only shown by the arrow at the lower part of the slip ring in the figure, and actually has multiple sets of heat dissipation channels). Meanwhile, due to the centrifugal action of the blades, generated cooling wind can be blown to the annular plates in the electric brush frame and the slip ring, and the slip ring is further cooled. The width of brush contact site is greater than the width of web portion for form accommodation space between web portion both sides face, the inside wall and the axis of rotation of brush contact site, partial blade district and non-blade district are arranged in rather than relative accommodation space respectively, can further reduce the volume of sliding ring, simultaneously, owing to be equipped with accommodation space (semi-enclosed space), the sliding ring during operation, produce the pressure differential more easily between blade district and the non-blade district, increased the flow of cooling gas, further improve the radiating effect.

In the embodiment, the blade is a flat blade, and the midline of the flat blade is parallel to the axis of the rotating shaft, so that the insulator can be formed by integral casting. The blade can also be according to any one of the narrow blade of circular arc, circular arc blade, wing section blade and the blade behind the dull and stereotyped curve of needs selection, and preferably, the blade is at insulator body's the direction of arranging and the axis of rotation certain angle to increase the centrifugal action of blade when the insulator rotates, strengthen the radiating effect.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A slip ring comprising a rotor and a stator, the rotor comprising a rotating shaft (20) and a conductor (21) and an insulator (22) arranged on the rotating shaft (20) at an interval, the insulator (22) comprising an annular insulator body (220) and a protrusion (221) provided on an outer wall of the insulator body (220), characterized in that: the outer wall of the insulator body (220) is provided with a plurality of blades (222).

2. The slip ring of claim 1, wherein:

the electric conductor (21) comprises a brush contact part (210) capable of contacting with a brush and a spoke plate part (211) used for mounting the brush contact part (210) on the rotating shaft (20), and the spoke plate part (211) is provided with a ventilation and heat dissipation hole (212);

the outer diameter of the insulator body (220) is smaller than that of the conductor (21), an annular separating sheet (223) is further arranged on the outer wall of the insulator body (220), the separating sheet (223) divides the outer wall of the insulator body (220) into a blade area (224) and a non-blade area (225) along the axial direction, and the plurality of groups of blades (222) are arranged on the blade area (224).

3. Slip ring according to claim 2, characterized in that: the width of the brush contact part (210) is larger than that of the spoke plate part (211), so that an accommodating space (23) is formed between two side surfaces (2110) of the spoke plate part and an inner side wall (2101) of the brush contact part on the corresponding side and a rotating shaft (20), part of the blade area (224) of the insulator (22) is arranged in the accommodating space (23) corresponding to the blade area, and part of the non-blade area (225) of the insulator (22) is arranged in the accommodating space (23) corresponding to the blade area.

4. Slip ring according to any of claims 1 to 3, characterized in that: the blade is any one of a flat blade, an arc narrow blade, an arc blade, a wing-shaped blade and a flat curved backward blade.