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High and low voltage ring brush with pressure compensation

A pressure compensation, high and low pressure technology, applied in the field of high and low voltage ring brushes, can solve problems such as burnt slip ring, fire, failure, etc., and achieve the effect of good contact effect

Active Publication Date: 2022-07-22
HUANENG YIMIN COAL POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the long-term use of the electric shovel, the friction between the slip ring and the brush will cause wear and tear for a long time, which will shorten the carbon brush, and the existing compression spring is made of mild steel sheet, and the pressure generated by the mild steel sheet due to long-term stress Due to the shortening of the brush and insufficient pressure, the contact between the brush and the slip ring is poor, which may easily cause electrical faults due to the virtual connection between the carbon brush and the slip ring, and may also easily generate electric sparks and ring fires, which may cause arc short circuit, burn the slip ring or even cause the fire

Method used

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  • High and low voltage ring brush with pressure compensation
  • High and low voltage ring brush with pressure compensation
  • High and low voltage ring brush with pressure compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] refer to figure 1 , 2 And 6, for the first embodiment of the present invention, a high-low pressure ring brush with pressure compensation is provided, the brush includes a fixed unit 100 and a carbon brush 200, wherein the fixed unit 100 is used for the carbon brush 200. Limit installation, and apply continuous downward pressure on the carbon brush 200 to ensure that the lower end of the carbon brush 200 can be in continuous and stable contact with the slip ring, so that the high-voltage power supply at the lower part of the electric shovel can be continuously led to the upper part of the electric shovel.

[0033] Specifically, the fixing unit 100 includes a fixing frame 101 and an elastic component 102 disposed on the fixing frame 101. The fixing frame 101 is divided into a first installation area 101a, a stress support area 101b and a second installation area 101c, and the first installation area 101a 2. The second installation area 101c is respectively arranged on b...

Embodiment 2

[0036] refer to Figures 1 to 3 And 6, is the second embodiment of the present invention, this embodiment is different from the first embodiment in that: the first installation area 101a includes a carbon brush placement groove 101a-1, which is vertically arranged in the carbon brush placement groove 101a-1 The outer connecting ribs 101a-2 and the limiting members 101a-3 symmetrically arranged on both sides of the carbon brush placement groove 101a-1.

[0037] Two side walls of the carbon brush placement groove 101a-1 are provided with open grooves 101a-11 in the vertical direction, and the notch of the open groove 101a-11 is located at the top of the side wall of the carbon brush placement groove 101a-1.

[0038]Limiting chutes 101a-12 and connecting posts 101a-13 are also provided on both outer side walls of the first installation area 101a, and the limiting chutes 101a-12 and connecting posts 101a-13 are symmetrically distributed on both sides of the opening slot 101a-11. ...

Embodiment 3

[0050] refer to figure 1 , 4 , 6 and 7, are the third embodiments of the present invention. This embodiment differs from the second embodiment in that: the elastic component 102 includes a force-bearing plate 102a and a pressing head 102b disposed at one end of the force-bearing plate 102a, and The elastic piece 102c is arranged on the other end.

[0051] Rotating columns 102a-1 are provided on the two side walls of the force receiving plate 102a close to the pressing head 102b, and the rotating columns 102a-1 can be fitted in the opening limiting groove 101b-2.

[0052] The elastic member 102c includes a screw rod 102c-1, a mounting plate 102c-2 disposed on the free end of the screw rod 102c-1, and a spring 102c-3 one end of which is mounted on the mounting plate 102c-2; the screw rod 102c-1 can be rotated in the threaded hole L The mounting plate 102c-2 slides in the limit frame 101c-2; the end of the spring 102c-3 away from the mounting plate 102c-2 is connected to the en...

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Abstract

The invention discloses a high and low voltage ring brush with pressure compensation, the brush comprises a fixing unit and a carbon brush, the fixing unit comprises a fixing frame and an elastic assembly arranged on the fixing frame, the fixing frame is divided into a first mounting area, a stress support area and a second mounting area, the first installation area and the second installation area are arranged on the two sides of the stress supporting area, and the elastic assembly is arranged in the second installation area. The carbon brush is arranged in the first mounting area of the fixing frame and comprises a conductor block and convex columns arranged on the two sides of the conductor block; according to the invention, the fixing unit is an outer shell part of the electric brush, so that the limiting installation of the carbon brush can be ensured, and continuous and stable pressure can be applied to the carbon brush along with the abrasion of the carbon brush in a lever action manner through the arranged elastic assembly; and the limiting piece is arranged on the outer shell, so that the carbon brush is limited, and downward extrusion force is applied to the carbon brush, so that the carbon brush has a good contact effect with the slip ring in the complete service cycle of the carbon brush.

Description

technical field [0001] The invention relates to the technical field of brushes for high and low voltage rings, in particular to a brush for high and low voltage rings with pressure compensation. Background technique [0002] The high and low voltage ring is an important electrical component on the electric shovel. Its function is to lead the high voltage power supply at the lower part of the electric shovel to the upper part of the electric shovel through the slip ring and carbon brush, so that the wires are not entangled when the electric shovel is rotated. At the same time, it also conducts the upper low-voltage control power supply and walking power supply to the lower electrical components and motors through the conductive carbon brushes and slip rings, so as to realize the walking of the electric shovel. [0003] However, with the long-term use of the electric shovel, the friction between the slip ring and the brush for a long time will cause wear and tear, which will s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/24H01R39/26H01R39/38H01R39/08
CPCH01R39/24H01R39/26H01R39/381H01R39/08Y02E10/72H01R39/27
Inventor 李长忠董帅程金营董其乙伊文浩
Owner HUANENG YIMIN COAL POWER CO LTD
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