CN219235123U

CN219235123U - Special tool for overhauling generator rotor

Info

Publication number: CN219235123U
Application number: CN202320104579.0U
Authority: CN
Inventors: 穆翔; 侯典慧; 张波; 孙喆
Original assignee: Huadian Zibo Thermal Power Co ltd
Current assignee: Huadian Zibo Thermal Power Co ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-06-23
Anticipated expiration: 2033-02-02

Abstract

The utility model belongs to the field of generator rotor maintenance tools, and particularly discloses a special tool for generator rotor maintenance, which comprises a tool frame, wherein the lower end of the tool frame is connected with a clamping piece, the inner side of the clamping piece is clamped with an adjusting sleeve, the adjusting sleeve is positioned right below the tool frame, three groups of sleeves are fixedly arranged on the lower annular array of the outer surface of the adjusting sleeve, a hexagonal groove is formed in the lower edge of the inner side of the sleeve positioned at the lower part, four groups of convex clamping columns extend from the annular array of the end face of the sleeve positioned at one side, and four groups of convex clamping blocks extend from the annular array of the end face of the sleeve positioned at the other side. The utility model realizes normal overhaul and disassembly inspection of the conductive screw so as to find potential structural defects of equipment, eliminate potential hidden danger of each part in time and ensure safe and stable operation of the unit.

Description

Special tool for overhauling generator rotor

Technical Field

The utility model belongs to the field of generator rotor overhaul appliances, and particularly discloses a special tool for generator rotor overhaul.

Background

The installation of the conductive screw of the generator rotor is divided into an upper pressing cap, a lower pressing cap, a conductive screw, a locking nut and other parts, wherein the upper pressing cap, the lower pressing cap and the conductive screw are special-shaped parts except for the locking nut which is a conventional part, disassembly and assembly cannot be realized by conventional tools, normal overhaul of the generator set cannot be performed, disassembly inspection can only be performed, preventive tests such as direct current resistance test and the like can only be performed, however, as electric power spot transaction is performed, the starting frequency of the generator set is greatly increased, frequent start and stop easily cause cold and hot expansion and shrinkage of a slip ring part of the generator rotor, mechanical stress frequently changes, looseness or structural damage of the conductive screw part of the rotor is caused, overheat is extremely easy to occur due to the fact that the current of the conductive screw part is generally more than 1000A during normal operation, the increase of the contact resistance of the whole loop is continuously aggravated due to overheat of a joint surface, so that the situation is worsened, the serious accident of the generator rotor is caused, if only the electric preventive tests are performed, the contact resistance caused by partial looseness is too large, but potential hazards cannot be detected, and potential hazards cannot be easily detected by the preventive test means, namely serious hidden hazards are difficult to find for normal operation of the parts.

Disclosure of Invention

In view of the above, the present utility model is directed to solving the drawbacks of the prior art, and provides a tool for repairing a generator rotor, so as to solve the problems of the prior art.

In order to achieve the above purpose, the utility model provides a special tool for overhauling a generator rotor, which comprises a tool frame, wherein the lower end of the tool frame is connected with a clamping piece, the inner side of the clamping piece is clamped with an adjusting sleeve, the adjusting sleeve is positioned right below the tool frame, three groups of sleeves are fixedly arranged on the lower annular array of the outer surface of the adjusting sleeve, a hexagonal groove is formed in the lower edge of the inner side of the sleeve positioned at the lower part, four groups of convex clamping columns extend from the annular array of the end face of the sleeve positioned at one side, and four groups of convex clamping blocks extend from the annular array of the end face of the sleeve positioned at the other side.

In the above technical scheme, preferably, an stressing arm is fixedly mounted at the upper end of the device frame, and the stressing arm is horizontally arranged.

Preferably, the clamping piece comprises an L-shaped frame fixedly arranged at the lower end part of the device frame, a locking stud is horizontally and fixedly arranged at the lower end part of the L-shaped frame, and the adjusting sleeve is attached to the outer surface of the locking stud.

Preferably, the outer surface of the locking stud is coaxially embedded with a top disc, and the top disc is tightly pressed at the front end of the adjusting sleeve.

Preferably, a locking nut is screwed at the end part of the locking stud, and the locking nut is tightly pressed at the rear end of the adjusting sleeve.

Preferably, the outer surface of the lock nut is coaxially embedded with a swivel, and the swivel and the lock nut are integrally formed.

Compared with the prior art, the utility model has the following beneficial effects: the sleeve with the convex clamping columns is rotated to the lower side of the device frame through loosening the locking nuts, then the sleeve is locked, the convex clamping columns can be abutted against round holes in the upper pressing cap to be loosened, the sleeve with the convex clamping blocks is rotated to the lower side of the device frame, the sleeve with the hexagonal grooves is abutted against gaps in the lower pressing cap to be loosened, then the sleeve with the hexagonal grooves is rotated to the lower side of the device frame, the hexagonal blocks on the hexagonal grooves and the conductive screws are abutted against to be loosened, and disassembly is completed, so that disassembly inspection of the conductive screws is carried out during normal overhaul, potential structural defects of equipment are found, potential hidden hazards of all parts are eliminated in time, and safe and stable operation of the unit is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a bottom view of the sleeve of the present utility model;

FIG. 3 is a schematic view of a conductive screw of the present utility model;

fig. 4 is a schematic view of the conductive screw of the present utility model.

In the figure: 1. a device frame; 2. adding a force arm; 3. an L-shaped frame; 4. locking the stud; 5. a top plate; 6. a lock nut; 7. an adjusting sleeve; 8. a sleeve; 9. a convex clamping block; 10. a convex clamping column; 11. a swivel; 12. a hexagonal groove; 13. a conductive screw; 14. pressing the cap; 15. the cap is pressed down.

Description of the embodiments

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

The special tool for overhauling the generator rotor shown in fig. 1-4 comprises a tool frame 1, wherein a force adding arm 2 and a force adding arm 2 are fixedly arranged at the upper end part of the tool frame 1 to facilitate rotation of the tool frame 1, the force adding arm 2 is horizontally arranged, a clamping piece is connected to the lower end of the tool frame 1, an adjusting sleeve 7 is clamped at the inner side of the clamping piece, the clamping piece comprises an L-shaped frame 3 fixedly arranged at the lower end part of the tool frame 1, the L-shaped frame 3 is fixedly connected, a locking stud 4 is horizontally and fixedly arranged at the lower end part of the L-shaped frame 3, the adjusting sleeve 7 is attached to the outer surface of the locking stud 4, a top disc 5 is coaxially inlaid on the outer surface of the locking stud 4, the top disc 5 is tightly pressed at the front end of the adjusting sleeve 7, the top disc 5 plays a role of propping up the adjusting sleeve 7, a locking nut 6 is tightly screwed at the end part of the locking stud 4, the locking nut 6 is tightly pressed at the rear end of the adjusting sleeve 7, the adjusting sleeve 7 is positioned under the tool frame 1, and the locking nut 6 and the stud 4 play a role of tightly fixing the adjusting sleeve 7 on the top disc 5.

The lower annular array of the outer surface of the adjusting sleeve 7 is fixedly provided with three groups of sleeves 8, the lower edge of the inner side of the sleeve 8 positioned at the lower part is provided with a hexagonal groove 12, the hexagonal groove 12 plays a role in clamping with a hexagonal block on a conductive screw 13, the annular array of the end surface of the sleeve 8 positioned at one side is extended with four groups of convex clamping columns 10, the convex clamping columns 10 play a role in clamping with a round hole on an upper press cap 14, the annular array of the end surface of the sleeve 8 positioned at the other side is extended with four groups of convex clamping blocks 9, the convex clamping blocks 9 play a role in clamping with a notch on a lower press cap 15, the outer surface of the lock nut 6 is coaxially embedded with a swivel 11, the swivel 11 and the lock nut 6 are integrally formed, and the swivel 11 plays a role in facilitating rotation of the lock nut 6.

During use, the locking nut 6 can be loosened, the adjusting sleeve 7 clamped and fixed between the locking nut 6 and the top disc 5 can be rotated, the sleeve 8 is driven to rotate, the sleeve 8 with the convex clamping column 10 is rotated to the lower side of the device frame 1, then the locking nut 6 is reversely rotated to lock and fix the adjusting sleeve 7, then the circular holes on the convex clamping column 10 and the upper pressing cap 14 can be butted to be loosened, the sleeve 8 with the convex clamping block 9 is rotated to the lower side of the device frame 1 in the same way, the notch on the lower pressing cap 15 is butted to be loosened, then the sleeve 8 with the hexagonal groove 12 is rotated to the lower side of the device frame 1, so that the hexagonal blocks on the hexagonal groove 12 and the conductive screw 13 are butted to be loosened, and then the device can be disassembled and checked.

In the present utility model, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Claims

1. The utility model provides a special tool of generator rotor maintenance, includes ware frame (1), its characterized in that, the lower extreme of ware frame (1) is connected with the clamping piece, adjustment sleeve (7) are held to the inboard clamp of clamping piece, adjustment sleeve (7) are located under ware frame (1), the surface lower part annular array fixed mounting of adjustment sleeve (7) has three sleeve (8) of group, is located the lower part the inboard lower limb department of sleeve (8) is offered and is hexagonal groove (12), is located one side the terminal surface annular array of sleeve (8) extends has four protruding clamping columns (10) of group, is located the terminal surface annular array of sleeve (8) of opposite side extends has four protruding fixture blocks (9) of group.

2. The special tool for overhauling the generator rotor according to claim 1, wherein the upper end part of the tool frame (1) is fixedly provided with a force applying arm (2), and the force applying arm (2) is horizontally arranged.

3. The special tool for overhauling the generator rotor according to claim 1, wherein the clamping piece comprises an L-shaped frame (3) fixedly installed at the lower end part of the tool frame (1), a locking stud (4) is horizontally and fixedly installed at the lower end part of the L-shaped frame (3), and the adjusting sleeve (7) is attached to the outer surface of the locking stud (4).

4. A tool special for overhauling a generator rotor according to claim 3, wherein a top disc (5) is coaxially inlaid on the outer surface of the locking stud (4), and the top disc (5) is tightly pressed at the front end of the adjusting sleeve (7).

5. The special tool for overhauling the generator rotor according to claim 4, wherein a locking nut (6) is screwed at the end part of the locking stud (4), and the locking nut (6) is tightly pressed at the rear end of the adjusting sleeve (7).

6. The special tool for overhauling the generator rotor according to claim 5, wherein a swivel (11) is coaxially inlaid on the outer surface of the lock nut (6), and the swivel (11) and the lock nut (6) are integrally formed.