Dovetail groove type brush holder directly connected with conductive shaft

Abstract

The utility model belongs to the field of electric power fittings, and particularly relates to a dovetail groove type brush holder directly connected with a conductive shaft. The brush holder comprises two parts, the first part is that a spring is arranged in a handle, a limiting lock is arranged at one end of a shaft, a blocking piece is arranged on the upper portion of the limiting lock, and the other end of the shaft penetrates through a conductive block, a shaft sleeve and the spring in the shaft sleeve of the handle to be connected with the insulating handle, and the second part is that a locking block is installed at the bottom of a conductive block fixing base, and a conductive shaft connecting body is installed on one side of the conductive block fixing base. A conductive shaft penetrating hole is formed in the conductive block fixing seat, openings are formed in the two ends of the other side of the conductive block fixing seat, the conductive block with the insulating handle and the shaft is inserted into the conductive block fixing seat with the conductive shaft connecting body, and the conductive block fixing seat and the conductive shaft connecting body are locked together after the handle is rotated. According to the brush holder, the handle is fixedly connected with the dovetail type conductive block and the brush box and then is connected with the dovetail type conductive block fixing seat with the conductive shaft connecting body in an inserted mode, so that the brush box and the conductive shaft are detachable, the safety of operators is greatly improved, meanwhile, replacement and maintenance are more convenient, and production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of power accessories, and specifically relates to a dovetail groove type brush holder that is directly connected to a conductive shaft. Background Technology

[0002] Currently, the brush holders used in generator units of power plants in my country have their brush boxes directly fixed on the conductive shaft. They operate as a whole during equipment operation. Therefore, when people replace carbon brushes, the motor or generator is running, which can lead to serious personal safety issues such as electric shock or mechanical injury due to the presence of current and rotating parts. This not only affects production efficiency but also poses safety hazards to operators. Summary of the Invention

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a dovetail groove brush holder that is directly connected to the conductive shaft and has improved safety performance, with the brush box and conductive shaft being detachable.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows: a dovetail-groove brush holder directly connected to a conductive shaft includes an insulating handle, a shaft, a brush box, a conductive block, a conductive block fixing seat, and a constant pressure spring. Its features include two parts: the first part has a spring inside the insulating handle, a limit lock at one end of the shaft, and a stop plate partially provided above the limit lock. The other end of the shaft passes through the conductive block, the bushing, and the spring inside the handle, connecting to the insulating handle. A conductive block fixing hole is provided in the middle of the conductive block, a stop block is provided at the bottom of the conductive block, the brush box is fixedly installed on one side of the conductive block, and a constant pressure spring fixing hole is provided at the top of the brush box, through which the constant pressure spring is fixed inside the brush box; the second part has a locking block installed at the bottom of the conductive block fixing seat, a shaft hole in the middle of the locking block, and locking blocks around the shaft hole. A limiting block is provided at the bottom, and a locking groove with opposite symmetry is provided in the middle of the limiting block. A conductive shaft connector is fixedly installed on one side of the conductive block fixing seat. A conductive shaft through hole is provided in the conductive shaft connector. A gap groove is provided on the inner wall of the conductive shaft connector around the conductive shaft through hole. Openings are provided at both ends on the other side of the conductive shaft connector. Adjustment holes are provided above and below the openings respectively. A conductive shaft connector fixing hole is provided above and below the conductive shaft through hole of the conductive shaft connector. The conductive shaft connector and the conductive block are threadedly connected through the conductive shaft connector fixing hole. The conductive block and the conductive block fixing seat are both dovetail type, and their shapes match each other. Then, the first part, namely the conductive block with an insulated handle and a shaft, is inserted into the second part, namely the conductive block fixing seat with the conductive shaft connector. The handle is rotated to lock the first part and the second part together.

[0005] The beneficial effects of this utility model are as follows: the dovetail groove brush holder, which is directly connected to the conductive shaft, is fixedly connected to the dovetail conductive block and the brush box through the handle, and then inserted into the dovetail conductive block fixing seat with the conductive shaft connector. This makes the brush box and the conductive shaft detachable, allowing for safe replacement of carbon brushes while the power is on. This greatly improves the safety of operators, makes replacement and maintenance more convenient, and improves production efficiency. Attached Figure Description

[0006] The following description, in conjunction with the accompanying drawings, illustrates specific embodiments.

[0007] Figure 1 This is the main view of the dovetail groove brush holder structure directly connected to the conductive shaft.

[0008] Figure 2 yes Figure 1 Top view.

[0009] Figure 3 yes Figure 1 The left view.

[0010] Figure 4 yes Figure 1 The right view.

[0011] In the diagram, 1 - Insulated handle; 2 - Shaft; 2-1 - Limit lock; 2-2 - Stop plate; 3 - Conductive block; 3-1 - Conductive block fixing hole; 3-2 - Stop block; 4 - Conductive block fixing seat; 4-1 - Conductive block fixing seat fixing hole; 4-2 - Conductive block fixing seat boss; 5 - Locking block; 5-1 - Locking groove; 5-2 - Locking block fixing hole; 5- 3 - Limiting block; 6 - Conductive shaft connector: 6-1 - Conductive shaft through hole; 6-2 - Gap groove; 6-3 - Adjustment hole; 6-4 - Conductive shaft connector fixing hole; 7 - Constant pressure spring; 8 - Brush box; 8-1 - Brush box fixing hole; 8-2 - Constant pressure spring fixing hole; 9 - Socket headstock bolt; 10 - Fastening bolt; 11 - Bushing; 12 - Spring. Detailed Implementation

[0012] Example, see attached document Figures 1-4The dovetail-groove brush holder, directly connected to the conductive shaft, comprises two parts. The first part consists of a spring 12 housed within the bushing of the insulating handle 1, a limit lock 2-1 located at the lower end of the shaft 2, and a partially arc-shaped baffle 2-2 on the upper part of the limit lock 2-1. The upper end of the shaft 2 is sequentially connected to the insulating handle 1, which is made of insulating material, by passing through the conductive block 3, the bushing 11, and the spring 12. The conductive block 3 is a dovetail shape, wider at the top and narrower at the bottom, with a conductive block fixing hole 3-1 and a baffle 3-2 on one side of its lower part. The brush box 8 has a brush box fixing hole 8-1. The conductive block 3 and the brush box 8 are threaded together through the conductive block fixing hole 3-1 and the brush box fixing hole 8-1. The upper left and right sides of the brush box 8 are provided with constant pressure spring fixing holes 8-2. The constant pressure spring 7 is fixed in the brush box 8 by fastening bolts 10 through the constant pressure spring fixing holes 8-2. After installation, the insulating handle 1, shaft 2, conductive block 3, bushing 11 and brush box 8 are a fixedly connected whole. The second part includes conductive block fixing seat 4. The right side of the conductive block fixing seat 4 is a dovetail groove. The size and shape of the dovetail groove match the shape of the conductive block 3. The left middle part of the conductive block fixing seat 4 is provided with a longitudinal conductive block fixing seat boss 4-2. The lower part of the conductive block fixing seat 4 is provided with a conductive block fixing seat fixing hole 4-1. A locking block 5 is installed at the bottom of the conductive block fixing seat 4. The middle part of the locking block 5 is provided with a locking hole 4-1. The shaft hole has a locking block 5-3 at the bottom of the locking block 5 around it. A symmetrical locking groove 5-1 is located in the middle of the locking block 5-3. Locking block fixing holes 5-2 are located at both ends of the locking block 5. The locking block 5 is threadedly connected to the conductive block fixing seat 4 using bolts and nuts. The right side of the conductive shaft connector 6 is fixedly installed on the left side of the conductive block fixing seat 4. A longitudinal groove is located on the right side of the conductive shaft connector 6, matching the longitudinal boss on the left side of the conductive block fixing seat 4. The boss is installed within the groove, increasing the stability of the conductive shaft connector 6 and the conductive block fixing seat 4. A conductive shaft through hole 6-1 is located within the conductive shaft connector 6. -1 The inner wall of the conductive shaft connector 6 is provided with a gap groove 6-2. An opening is provided on the left side of the conductive shaft connector 6. Adjustment holes 6-3 are provided at corresponding positions above and below the opening. The tightness of the fit between the conductive shaft and the conductive shaft through hole 6-1 is adjusted by bolts and nuts through the adjustment holes 6-3. The conductive shaft connector fixing holes 6-4 are provided above and below the conductive shaft through hole 6-1 respectively. The conductive shaft connector 6 and the conductive block fixing seat 4 are fixedly connected by hexagonal bolts 9 and nuts. The first part, namely the conductive block 3 with insulating handle 1 and brush box 8, is inserted into the second part, namely the conductive block fixing seat 4 with conductive shaft connector 6. The insulating handle 1 is rotated to lock the first part and the second part together.

[0013] The working principle of the dovetail-groove brush holder directly connected to the conductive shaft is as follows: Before operation, the first part, namely the conductive block 3 with the insulated handle 1 and brush box 8, is inserted into the second part, namely the conductive block fixing seat 4 with the conductive shaft connector 6. The insulated handle 1 is rotated to lock the first and second parts together. Then, it is installed on the generator frame, with the conductive shaft also fixed to the bracket. After power is applied, it is used normally. At this time, the current passes through the carbon brush, brush box 8, shaft, conductive block 3, conductive block fixing seat 4, and conductive shaft connector 6, and is then discharged through the conductive shaft. When the carbon brush needs to be replaced after a period of use, simply rotate the insulated handle 1 to pull out the first part, namely the conductive block 3 with the insulated handle 1, shaft 2, and brush box 8, to replace the carbon brush. This greatly improves the safety of operators, makes replacement and maintenance more convenient, and improves production efficiency.

Claims

1. A dovetail-groove brush holder directly connected to a conductive shaft, comprising an insulating handle (1), a shaft (2), a brush box (8), a conductive block (3), a conductive block fixing seat (4), and a constant pressure spring (7), characterized in that, The brush grip consists of two parts. The first part has a spring (12) inside the insulating handle (1). A limit lock (2-1) is provided at one end of the shaft (2). A baffle (2-2) is provided on the upper part of the limit lock (2-1). The other end of the shaft (2) is connected to the insulating handle (1) by passing through the conductive block (3), the bushing (11), and the spring (12) inside the insulating handle (1). The conductive block (3) is a dovetail shape that is wider at the top and narrower at the bottom. A conductive block fixing hole (3-1) is provided in the middle of the conductive block (3), a stop block (3-2) is provided at the bottom of the conductive block (3), and a brush box (8) is fixedly installed on one side of the conductive block (3); the second part is that a locking block (5) is installed at the bottom of the conductive block fixing seat (4), a shaft hole is provided in the middle of the locking block (5), a limiting block (5-3) is provided at the bottom of the locking block (5) around the shaft hole, a reverse symmetrical locking groove (5-1) is provided in the middle of the limiting block (5-3), a conductive shaft connector (6) is fixedly installed on one side of the conductive block fixing seat (4), a conductive shaft through hole (6-1) is provided in the conductive shaft connector (6), a gap groove (6-2) is provided on the inner wall of the conductive shaft connector (6) around the conductive shaft through hole (6-1), and the other side of the conductive shaft connector (6) The two ends are provided with openings, and adjustment holes (6-3) are provided above and below the openings respectively. The conductive shaft connector (6) is provided with conductive shaft through hole (6-1) above and below the conductive shaft connector (6) respectively. The conductive shaft connector (6) and the conductive block (3) are connected by threads through the conductive shaft connector fixing hole (6-4). The conductive block (3) and the conductive block fixing seat (4) are both dovetail type. The right side of the conductive block fixing seat (4) is a dovetail type groove. The size and shape of the dovetail type groove match the shape of the conductive block (3). Then, the first part, namely the conductive block (3) with the insulating handle (1) and the shaft (2), is inserted into the second part, namely the conductive block fixing seat (4) with the conductive shaft connector (6). The insulating handle (1) is rotated to lock the first part and the second part together.

2. The dovetail-groove brush holder directly connected to the conductive shaft according to claim 1, characterized in that, The brush box (8) is provided with a constant pressure spring fixing hole (8-2) at the top, and the constant pressure spring (7) is fixed in the brush box (8) through the constant pressure spring fixing hole (8-2).

Images