CN221081043U - Generator excitation carbon brush fixing device - Google Patents

Abstract

The utility model relates to the field of maintenance of generators, and particularly discloses a generator excitation carbon brush fixing device which comprises a fixing frame, a limiting base and a rotating shaft; a limiting base is fixedly connected to the fixed frame; a rotating shaft is inserted into the limiting base in a rotating way; the two ends of the rotating shaft are fixedly connected with a handle and a pressing block respectively; an inlet and outlet groove is formed in the fixed frame; a clamping groove is formed in the inlet and outlet groove; through holding the handle after rotatory, drive rotation axis and press the extrusion of piece and press the unit, press the unit and accomplish fixedly with the carbon brush contact to fix a plurality of carbon brushes detachable in fixed frame, thereby when the fixed frame of whole removal accomplishes the installation or dismantles, inside carbon brush can not be disturbed and lead to the fact the striking damage with the rotor contact in the generator rotor system, solved current fixing device itself and can bring the damage to the carbon brush, because the hardness of carbon brush is very low, improper fixed pressure or fixing device all can damage the problem of carbon brush.

Description

Generator excitation carbon brush fixing device

Technical Field

The utility model relates to the field of maintenance of generators, in particular to a generator excitation carbon brush fixing device.

Background

Carbon brushes, also called brushes, are widely used as a sliding contact piece in many electrical equipment, and are devices for transmitting energy or signals between a fixed part and a rotating part of a motor or a generator or other rotary machinery, and are generally made of pure carbon and a coagulant, are generally square in shape, are clamped on a metal bracket, are internally provided with springs to press the carbon brushes on a rotating shaft, and when the motor rotates, electric energy is transmitted to a coil through a phase changer, and because the carbon is mainly used as a carbon brush, the carbon brushes are easy to wear; the carbon deposit should be cleaned in time and maintained and replaced regularly.

The Chinese patent publication No. CN105610028A discloses a hanging carbon brush bracket in 2016-05-25 days, and belongs to the technical field of carbon brushes. Including sliding ring (3) and carbon brush (7) of contact installation, sliding ring (3) suit is on transmission shaft (1), its characterized in that: the carbon brush (7) is fixedly installed below the slip ring (3) through a carbon brush fixing mechanism, supporting mechanisms which are rotationally connected with the transmission shaft (1) are arranged at two ends of the slip ring (3), and two ends of the carbon brush fixing mechanism are connected with the supporting mechanisms at two ends of the slip ring (3) into a whole. According to the utility model, the relative connection mode of the carbon brush and the slip ring is changed, the carbon brush is fixed and the slip ring rotates to be installed and connected, the carbon brush is fixed below the slip ring through the carbon brush fixing mechanism and is connected with two sides of the slip ring into a whole, the supporting mechanisms are arranged at two ends of the slip ring, so that effective contact between the carbon brush and the slip ring is fully ensured, meanwhile, when maintenance is needed, only the supporting mechanisms at two ends of the slip ring are required to be opened, and the installation and the disassembly are convenient.

However, the disclosed proposal has the defects that the carbon brush needs to be fixed when the brush holder is detached and installed, so as to prevent the carbon brush from being damaged; however, the fixing device itself may damage the carbon brush because the hardness of the carbon brush is low, and an improper fixing pressure or the fixing device may damage the carbon brush.

Disclosure of utility model

The utility model aims to solve the problem that when the brush holder is detached and installed, the carbon brush is required to be fixed firstly, so that the carbon brush is prevented from being damaged; however, the fixing device itself may damage the carbon brush, and because the hardness of the carbon brush is very low, the carbon brush may be damaged by improper fixing pressure or the fixing device.

In order to achieve the above object, the present utility model is realized by the following technical scheme;

The utility model relates to a generator excitation carbon brush fixing device which comprises a fixing frame, a limiting base and a rotating shaft; a limiting base is fixedly connected to the fixed frame; a rotating shaft is inserted into the limiting base in a rotating way; the two ends of the rotating shaft are fixedly connected with a handle and a pressing block respectively; an inlet and outlet groove is formed in the fixed frame; a clamping groove is formed in the inlet and outlet groove; a carbon brush is inserted in the inlet and outlet grooves in a sliding manner; a fixed bottom plate is fixedly connected in the clamping groove; the tail end of the fixed bottom plate is fixedly connected with a coil spring corresponding to the carbon brush; the fixed frame is provided with a pressing unit corresponding to the carbon brush.

Further, the pressing unit comprises a pressing plate, a threaded shaft, an elastic piece, a sucker and a positioning shaft; the fixed frame is provided with a hole in a sliding way and is inserted with a threaded shaft and a positioning shaft; the tail end of the positioning shaft is fixedly connected with a pressing plate; the lower end of the positioning shaft is fixedly connected with a sucker; and the threaded shaft is provided with an elastic piece corresponding to the clamping groove.

Further, the sucking disc is sleeved with a traction sleeve; the tail end of the traction sleeve is sleeved with a symmetrical ferrule; the symmetrical ferrule pair is fixedly connected to the sucker; and the traction sleeve member is provided with displacement grooves corresponding to the symmetrical ferrules.

Furthermore, an avoidance groove is formed in the fixed frame corresponding to the carbon brush.

Further, the fixing frame is made of copper alloy.

The device for fixing the excitation carbon brush of the generator has the following beneficial effects:

1. According to the utility model, the rotating shaft and the pressing block are driven to press the pressing unit by holding the handle, and the pressing unit is contacted with the carbon brushes to finish fixing, so that the carbon brushes are detachably fixed in the fixing frame, and when the fixing frame is integrally moved to finish installation or detachment, the internal carbon brushes cannot be disturbed to contact with a rotor in a rotor system of the generator to cause impact damage, so that the problem that the carbon brushes are damaged by the conventional fixing device is solved, and the carbon brushes are damaged due to low hardness of the carbon brushes and improper fixing pressure or fixing device;

2. According to the utility model, the handle is held and then rotated to drive the rotating shaft and the pressing block to rotate ninety degrees, the pressing block extrudes the pressing plate to move downwards to drive the threaded shaft, the sucker and the positioning shaft to descend, so that the sucker extrudes the carbon brush to complete fixation, and continuous pressing and locking are completed after the handle is fixed, so that the whole fixing device is convenient to move, and the carbon brush can be fixed when the carbon brush can be conveniently inserted into or pulled out of a generator rotor system, so that the carbon brush cannot be randomly moved to cause damage in the transferring process, and the problem that the existing fixing device can cause damage to the carbon brush because the hardness of the carbon brush is very low and the carbon brush can be damaged due to improper fixing pressure or fixing device is solved.

Drawings

The following describes the embodiments of the present utility model in further detail with reference to the drawings;

FIG. 1 is a schematic view of a first axial structure of the present utility model;

FIG. 2 is a schematic diagram of a second axial measurement structure according to the present utility model;

FIG. 3 is a schematic view of a first partial enlarged structure of the present utility model;

FIG. 4 is a schematic view of a second partial enlarged structure of the present utility model;

Fig. 5 is an enlarged schematic view of fig. 4 at a.

The reference numerals in the figures illustrate: 1. a fixed frame; 2. a limit base; 3. a rotation shaft; 4. a handle; 5. pressing the blocks; 7. a slot; 8. a carbon brush; 9. a clamping groove; 10. a fixed bottom plate; 11. a coil spring; 12. an avoidance groove; 13. pressing the plate; 14. a threaded shaft; 15. an elastic member; 16. a suction cup; 17. positioning a shaft; 18. a symmetrical ferrule; 19. a traction kit; 20. and a displacement groove.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the technical solutions in the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up-down-left-right-front-rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship between the components, the motion condition, etc. in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indicators are correspondingly changed, and the connection may be a direct connection or an indirect connection.

Referring to fig. 1 to 5, a generator excitation carbon brush fixing device includes a fixing frame 1, a limiting base 2 and a rotating shaft 3; a limiting base 2 is fixedly connected to the fixed frame 1; the limiting base 2 is rotatably inserted with a rotating shaft 3; the two ends of the rotating shaft 3 are fixedly connected with a handle 4 and a pressing block 5 respectively; an inlet and outlet groove 7 is formed in the fixed frame 1; a clamping groove 9 is formed in the inlet and outlet groove 7; a carbon brush 8 is inserted in the inlet and outlet groove 7 in a sliding way; a fixed bottom plate 10 is fixedly connected in the clamping groove 9; the tail end of the fixed bottom plate 10 is fixedly connected with a coil spring 11 corresponding to the carbon brush 8; a pressing unit is arranged on the fixed frame 1 corresponding to the carbon brush 8; during operation, through holding handle 4 back and rotating, drive rotation axis 3 and press briquetting 5 extrusion press the unit, press the unit and accomplish fixedly with carbon brush 8 contact to fix a plurality of carbon brushes 8 detachable in fixed frame 1, thereby when whole removal fixed frame 1 accomplishes the installation or dismantles, inside carbon brush 8 can not be disordered and lead to the fact the striking damage with the rotor contact in the generator rotor system, solved current fixing device itself and can bring the damage to carbon brush 8, because carbon brush 8's hardness is very low, improper fixed pressure or fixing device all can damage carbon brush 8's problem.

The pressing unit comprises a pressing plate 13, a threaded shaft 14, an elastic piece 15, a sucker 16 and a positioning shaft 17; the fixed frame 1 is provided with a hole and is in sliding connection with a threaded shaft 14 and a positioning shaft 17; the tail end of the positioning shaft 17 is fixedly connected with a pressing plate 13; the lower end of the positioning shaft 17 is fixedly connected with a sucker 16; an elastic piece 15 is arranged on the threaded shaft 14 corresponding to the clamping groove 9; during operation, through holding handle 4 back and rotating, drive rotation axis 3 and press briquetting 5 and rotate ninety degrees, press briquetting 5 extrusion press 13 downward movement, drive screw shaft 14, sucking disc 16 and location axle 17 decline, make sucking disc 16 extrusion carbon brush 8 accomplish fixedly, accomplish after this fixed handle 4 and press the locking constantly, thereby conveniently remove whole fixing device, make can be convenient insert in the generator rotor system or when pulling out from the generator rotor system, can fix carbon brush 8 so that can not remove at will and cause the damage at the in-process of shifting, current fixing device itself can bring the damage to carbon brush 8 has been solved, because the hardness of carbon brush 8 is very low, improper fixed pressure or fixing device all can damage carbon brush 8's problem.

The sucking disc 16 is sleeved with a traction sleeve 19; the tail end of the traction sleeve 19 is sleeved with a symmetrical ferrule 18; the symmetrical ferrule 18 pair is fixedly connected to the sucker 16; the traction sleeve 19 is provided with a displacement groove 20 corresponding to the symmetrical sleeve ring 18; during operation, the traction sleeve 19 can not interfere with the symmetrical ring 18 to cause deformation of the sucker 16 when the sucker 16 deforms and displaces through the displacement groove 20, so that the sucker 16 can be normally pressed to form a sealing state, when the sucker 16 is jacked up by the elastic piece 15, the upper end of the sucker 16 synchronously rises along with the threaded shaft 14, the traction sleeve 19 is carried, so that the symmetrical ring 18 at the tail end is pulled to rise, the edge of the sucker 16 is lifted to a corner, vacuum is rapidly broken, the carbon brush 8 is released, the carbon brush 8 is in a free sliding state, and the initial state of the sucker 16 is the state that the traction sleeve 19 pulls the symmetrical ring 18 to cause deformation.

The fixed frame 1 is provided with an avoidance groove 12 corresponding to the carbon brush 8; during operation, the wire on the carbon brush 8 can move along with the reciprocating movement of the carbon brush 8 through the avoiding groove 12, so that abrasion interference caused by contact with the fixed frame 1 is avoided, and the reciprocating movement of the carbon brush 8 can be smoothly performed.

The fixed frame 1 is made of copper alloy; the sucker 16 and the symmetrical ferrule 18 are integrally made of rubber; during operation, the sucking disc 16 and the symmetrical ring 18 are integrally made of rubber, so that the connection between the sucking disc 16 and the symmetrical ring 18 is tighter, and the connection stability can be maintained under the reciprocating pulling of the traction sleeve 19; the fixing frame 1 made of copper alloy is convenient to process and manufacture.

By adopting the scheme, when the electric generator rotor system is used, the handle 4 is held and then rotated, the rotating shaft 3 is driven, the pressing block 5 is pressed to press the pressing unit, and the pressing unit is in contact with the carbon brushes 8 to complete fixation, so that a plurality of carbon brushes 8 are detachably fixed in the fixed frame 1, and when the fixed frame 1 is integrally moved to complete installation or detachment, the inner carbon brushes 8 cannot be in contact with a rotor in the electric generator rotor system to cause impact damage, and the problem that the carbon brushes 8 are damaged due to the fact that the existing fixing device can cause damage to the carbon brushes 8 due to low hardness of the carbon brushes 8 and damage to the carbon brushes 8 due to improper fixing pressure or fixing device is solved; the handle 4 is held and then rotated to drive the rotating shaft 3 and the pressing block 5 to rotate ninety degrees, the pressing block 5 extrudes the pressing plate 13 to move downwards to drive the threaded shaft 14, the sucker 16 and the positioning shaft 17 to descend, so that the sucker 16 extrudes the carbon brush 8 to finish fixing, and the handle 4 is fixed and continuously pressed for locking, so that the whole fixing device is convenient to move, and the carbon brush 8 can be fixed when the carbon brush is conveniently inserted into a generator rotor system or pulled out from the generator rotor system, so that the carbon brush 8 cannot be randomly moved to cause damage in the transferring process, and the problem that the carbon brush 8 is damaged due to the fact that the existing fixing device is low in hardness of the carbon brush 8 is solved; the traction sleeve 19 can not interfere the symmetrical ring 18 to cause deformation of the sucker 16 when the traction sleeve 19 is displaced along with deformation of the sucker 16, so that the sucker 16 can be pressed normally to form a sealing state, while when the sucker 16 is jacked up by the elastic piece 15, the upper end of the sucker 16 synchronously rises along with the threaded shaft 14, the traction sleeve 19 is carried, so that the symmetrical ring 18 at the tail end is pulled to rise, the edge of the sucker 16 is lifted to a corner, vacuum is quickly destroyed, the carbon brush 8 is released, the carbon brush 8 is in a free sliding state, and the initial state of the sucker 16 is a state that the traction sleeve 19 pulls the symmetrical ring 18 to cause deformation; the lead on the carbon brush 8 can move along with the reciprocating movement of the carbon brush 8 through the avoiding groove 12, so that abrasion interference caused by contact with the fixed frame 1 is avoided, and the reciprocating movement of the carbon brush 8 can be smoothly carried out; the sucker 16 and the symmetrical ferrule 18 are integrally made of rubber, so that the connection between the sucker 16 and the symmetrical ferrule 18 is more compact, and the connection stability can be maintained under the reciprocating pulling of the traction sleeve 19; the fixing frame 1 made of copper alloy is convenient to process and manufacture.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (5)

1. The utility model provides a generator excitation carbon brush fixing device which characterized in that; comprises a fixed frame (1), a limit base (2) and a rotating shaft (3); a limiting base (2) is fixedly connected to the fixed frame (1); a rotating shaft (3) is inserted into the limiting base (2) in a rotating way; the two ends of the rotating shaft (3) are fixedly connected with a handle (4) and a pressing block (5) respectively; an inlet and outlet groove (7) is formed in the fixed frame (1); a clamping groove (9) is formed in the inlet and outlet groove (7); a carbon brush (8) is inserted in the inlet and outlet groove (7) in a sliding way; a fixed bottom plate (10) is fixedly connected in the clamping groove (9); the tail end of the fixed bottom plate (10) is fixedly connected with a coil spring (11) corresponding to the carbon brush (8); the fixed frame (1) is provided with a pressing unit corresponding to the carbon brush (8).

2. The generator excitation carbon brush fixing apparatus according to claim 1, characterized in that: the pressing unit comprises a pressing plate (13), a threaded shaft (14), an elastic piece (15), a sucker (16) and a positioning shaft (17); the fixed frame (1) is provided with a hole in a sliding way, and is inserted with a threaded shaft (14) and a positioning shaft (17); the tail end of the positioning shaft (17) is fixedly connected with a pressing plate (13); the lower end of the positioning shaft (17) is fixedly connected with a sucker (16); elastic pieces (15) are arranged on the threaded shafts (14) corresponding to the clamping grooves (9).

3. The generator excitation carbon brush fixing apparatus according to claim 2, characterized in that: the sucking disc (16) is sleeved with a traction sleeve (19); the tail end of the traction sleeve (19) is sleeved with a symmetrical ferrule (18); the symmetrical ferrule (18) pair is fixedly connected to the sucker (16); the traction sleeve (19) is provided with a displacement groove (20) corresponding to the symmetrical sleeve ring (18).

4. The generator excitation carbon brush fixing apparatus according to claim 3, wherein: and the fixed frame (1) is provided with an avoidance groove (12) corresponding to the carbon brush (8).

5. The generator excitation carbon brush fixing apparatus according to claim 4, characterized in that: the fixed frame (1) is made of copper alloy.