CN202978534U

CN202978534U - Novel electric brush carrier of high-voltage motor

Info

Publication number: CN202978534U
Application number: CN 201220704040
Authority: CN
Inventors: 李灼超
Original assignee: Guangdong Dabaoshan Mining Co Ltd
Current assignee: Guangdong Dabaoshan Mining Co Ltd
Priority date: 2012-12-18
Filing date: 2012-12-18
Publication date: 2013-06-05
Anticipated expiration: 2022-12-18

Abstract

The utility model discloses a novel electric brush carrier of a high-voltage motor, which comprises a collecting ring, a plurality of electric brushes contacted with the surface of the collecting ring, a brush holder for supporting the electric brushes and a busbar fixed on the brush holder, wherein the electric brushes are independently connected with the busbar through a lead by adopting a fixing screw. According to the utility model, the contact area is increased; the contact resistance is reduced; and the failure problem of the motor caused by serious local heating because the contact resistance between joints is higher is avoided.

Description

A kind of high-voltage motor New electric brush shelf

Technical field

The utility model relates to high-voltage motor brush carrier technical field, is specially a kind of high-voltage motor New electric brush shelf.

Background technology

Brush carrier is the device of transferring energy or signal between the standing part of motor, generator or other rotating machineries and rotating part.The starting torque of high-voltage motor is large, the rotor current of motor forms the loop between collector ring, brush, bus-bar, rotor secondary lead wires and contactor, electric current generally reaches the hundreds of ampere, the so large function of current is on the polylinker circuits such as collector ring, brush, bus-bar, be very easy to cause the heating of these parts, if process improperly, cause local overheating, with the safe operation of serious threat motor.By analysis and practice summary, the contact resistance of each wiring is more greatly to cause the major reason of generating heat.

As shown in Figure 1, brush lead-out wire 6 is connected with the hold-down screw 2 of brush carrier 3, and contact area is less, contacts with copper or steel bus-bar 8 to produce larger contact resistance, easily produces local pyrexia serious, causes electrical fault, and impact is normally produced.

The utility model content

The high-voltage motor New electric brush shelf that provides a kind of caloric value less is provided the technical problems to be solved in the utility model.

In order to address the above problem, the utility model provides a kind of high-voltage motor New electric brush shelf, comprise the brush, the brush carrier that supports brush that collector ring, some and collector ring surface keep in touch, be fixed on the bus-bar on brush carrier, the lead-in wire of described brush is connected on bus-bar separately.

The lead-in wire of described brush is fixed by screws on bus-bar.

Compared with prior art, the beneficial effects of the utility model are:

The lead-in wire of brush is connected on separately on bus-bar, and contact area increases, and contact resistance reduces, and has effectively reduced the heat that produces because of power lug, has guaranteed the motor normal operation.

Description of drawings

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is the structural representation of existing high-voltage motor brush carrier;

Fig. 2 is the utility model structural representation.

In figure: 1-bus-bar lead-in wire, 2-hold-down screw, 3-brush carrier, 4-brush, 5-stage clip, 6-brush-lead, 7-attachment screw, 8-bus-bar, 9-brush carrier lower margin, 10-collector ring.

Embodiment

As shown in Figure 2, a kind of high-voltage motor New electric brush shelf described in the utility model, comprise collector ring 10, the brush 4 of conduction, guarantee the stage clip 5 of brush 4 and collector ring 10 good contacts, brush carrier 3 by hold-down screw 2 fixed brushes 4 and bus-bar 8, the brush-lead 6 of conducting bus-bar 8 and brush 4, described brush-lead 6 by attachment screw 7 separately and bus-bar 8 link together, guaranteed to go between 6 with bus-bar larger contact area is arranged, reduce the contact resistance between them, thereby reduced their caloric value; Brush carrier is to be fixed on large ground by brush carrier lower margin 9.

The operation principle of a kind of high-voltage motor New electric brush shelf described in the utility model is:

Electric current flows into bus-bar 8 from bus-bar lead-in wire 1, and through brush-lead 6, conducting brush 4 and bus-bar 8, due to the effect of stage clip 5, brush 4 keeps in touch with collector ring 10, realizes current lead-through; Static in collector ring 10 flows into the earth finally by crossing brush carrier lower margin 9.

Other structure of the described a kind of high-voltage motor New electric brush shelf of the present embodiment is referring to prior art.

The above, it is only preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, therefore every technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any modification, equivalent variations and modification that above embodiment does according to technical spirit of the present utility model.

Claims

1. high-voltage motor New electric brush shelf comprises the brush, the brush carrier that supports brush that collector ring, some and collector ring surface keep in touch, is fixed on the bus-bar on brush carrier, and it is characterized in that: the lead-in wire of described brush is connected on bus-bar separately.

2. high-voltage motor New electric brush shelf according to claim 1, it is characterized in that: the lead-in wire of described brush is to be connected on bus-bar by attachment screw.