CN216327953U

CN216327953U - Special spanner for screwing nut of gas turbine

Info

Publication number: CN216327953U
Application number: CN202123096150.1U
Authority: CN
Inventors: 韩大强; 彭翔; 刘涛
Original assignee: China Hangfa Gas Turbine Co ltd
Current assignee: China Hangfa Gas Turbine Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-04-19
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to a special wrench for screwing a nut of a gas turbine, belonging to the technical field of gas turbine assembly and comprising a wrench rod, a connecting block and a wrench head, wherein the tail end of the wrench head is provided with a first connecting bump which is rotatably connected with one end of the connecting block through a first pin; one end of the wrench rod is provided with a second connecting lug which is rotatably connected to the other end of the connecting block through a second pin; and one end of the wrench rod, which is far away from the connecting block, is provided with a long pin. The utility model has simple operation and good use effect, and solves the difficult problem of difficult operation caused by narrow high-pressure turbine journal space and over-deep drum space in the assembling or disassembling process of the gas turbine.

Description

Special spanner for screwing nut of gas turbine

Technical Field

The utility model belongs to the technical field of gas turbine assembly, and particularly relates to a special wrench for screwing a nut of a gas turbine.

Background

The force limiting wrench is mainly used for mounting and dismounting threaded connectors so as to improve working efficiency and working quality and reduce labor intensity, and is widely applied to the field of assembly of aircraft engines and gas turbine components.

At present, most bolts and nuts have limited force requirements in the assembly process of a gas turbine, but the existing force limiting wrench needs a certain space and cannot be used, so that the assembly work cannot be completed. In the assembling process of a certain light gas turbine, a high-pressure turbine drum shaft and a nut on a connecting bolt of a nine-stage disk of a gas compressor have a force limiting requirement, and a force limiting wrench cannot be used due to the fact that the space of the drum shaft is small; when assembling the self-locking nut connected with the high-pressure turbine rotor and the high-pressure compressor rotor of a certain type of gas turbine, the assembly cavity of the high-pressure turbine rotor assembly is narrow and has a certain depth, so that the assembly and the disassembly are difficult. Therefore, a special wrench for tightening nuts of a gas turbine is needed to complete the assembly and disassembly tasks.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the special wrench for screwing the nut of the gas turbine, which takes a plurality of characteristics including use conditions and space states into consideration, meets the design requirements and ensures the assembly and disassembly quality of the gas turbine.

A special wrench for tightening a nut of a gas turbine comprises a wrench rod, a connecting block and a wrench head, wherein a first connecting bump is arranged at the tail end of the wrench head and is rotatably connected with one end of the connecting block through a first pin; one end of the wrench rod is provided with a second connecting lug, the second connecting lug is rotatably connected to the other end of the connecting block through a second pin, and the first pin and the second pin are perpendicular to each other; and one end of the wrench rod, which is far away from the connecting block, is provided with a long pin.

The wrench rod is a multi-path section rod body, and the long pin is fixed at the large-diameter end of the wrench rod.

The long pin is arranged in parallel with the pin.

The utility model has the beneficial effects that:

1. according to the utility model, the wrench rod is connected with the pin, so that the decagonal spline self-locking nut can be assembled and disassembled through the wrench head, the design requirements can be met, and the assembling and disassembling quality can be ensured.

2. The angle of the wrench head is changed by the connecting block, so that the wrench head can be completely sleeved on the decagonal spline self-locking nut under the conditions of being narrow and unable to help other tools, and workers can conveniently disassemble the self-locking nut.

3. The other end of the self-locking nut far away from the wrench head is designed by referring to the shape of the screw tap, and the long pin penetrates through the wrench rod, so that a worker can not only use enough force to disassemble the self-locking nut when using the self-locking nut, but also can balance the force.

4. The wrench is simple to operate and good in using effect, plays a key role in transmission decomposition and re-assembly work of a certain type of gas turbine, successfully decomposes and assembles the decagonal spline self-locking nut at the joint of the nine-stage grate disc of the high-pressure gas compressor and the high-pressure turbine drum, ensures the assembly quality and lays a solid foundation for smooth follow-up work.

The utility model solves the problem of difficult operation caused by narrow high-pressure turbine journal space and over-deep drum space in the assembling or disassembling process of the gas turbine.

Drawings

FIG. 1 is a schematic view of a gas turbine engine wrench for tightening nuts provided by the present invention;

FIGS. 2(a) and 2(b) are schematic views of a trigger lever according to the present invention (wherein, FIG. (a) is a front view, and FIG. (b) is a top view);

fig. 3(a) and 3(b) are schematic diagrams of a wrench head in the special wrench according to the embodiment of the present invention (in which fig. (a) is a front view and fig. (b) is a top view);

fig. 4(a) and 4(b) are schematic views of a connecting block according to the present invention (wherein fig. (a) is a front view and fig. (b) is a top view);

wherein,

1-wrench rod, 11-connecting lug II, 2-wrench head, 21-connecting lug I, 3-connecting block, 4-long pin, 5-pin II, and 6-pin I.

Detailed Description

For better understanding of the present invention, the technical solutions and effects of the present invention will be described in detail by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-4 (a) and 4(b), the special wrench for tightening the nut of the gas turbine comprises a wrench rod 1, a connecting block 3 and a wrench head 2, wherein the wrench head 2 is used for sleeving the nut to be tightened to tighten the nut, and the inner wall of the wrench head 2 is provided with an internal spline which is matched with an external spline of the nut to be tightened; the tail end of the wrench head 2 is provided with a first connecting bump 21, and the first connecting bump 21 is rotatably connected with one end of the connecting block 3 through a first pin 6; one end of the wrench rod 1 is provided with a second connecting bump 11, the second connecting bump 11 is rotatably connected to the other end of the connecting block 3 through a second pin 5, and the first pin 6 and the second pin 5 are perpendicular to each other. Connect lug one 21 and connect lug two 11 and make and all leave the clearance between wrench head 2 and wrench rod 1 and connecting block 3, through being connected with connecting block 3's rotation, wrench head 2 can change the angle to the adaptation can't be with the help of the narrow and small space of other instruments. And one end of the wrench rod 1, which is far away from the connecting block 3, is provided with a long pin 4 for applying torque when screwing the nut.

The wrench rod 1 is a multi-path section rod body, and the long pin 4 is fixed at the large-diameter end of the wrench rod 1.

The long pin 4 is arranged in parallel with the second pin 5.

In use, the wrench rod 1 and the wrench head 2 are assembled together through the connecting block 3 and locked by the first pin 6 and the second pin 5. In the embodiment, the internal spline of the inner wall of the wrench head 2 is matched with the external spline of the decagonal spline self-locking nut, when the combustion engine is disassembled and assembled, the wrench head 2 is sleeved on the decagonal spline self-locking nut, and the connecting block 3 assists an operator to realize angle adjustment so that the operator can use the special wrench more conveniently; the wrench rod 1 transmits the acting force between the long pin 4 and the wrench head 2, so that the functions of disassembling and assembling the self-locking nut are realized, and the assembling quality is ensured.

Claims

1. The utility model provides a gas turbine screws up special spanner of nut which characterized in that: the wrench comprises a wrench rod, a connecting block and a wrench head, wherein the tail end of the wrench head is provided with a first connecting bump which is rotatably connected with one end of the connecting block through a first pin; one end of the wrench rod is provided with a second connecting lug, the second connecting lug is rotatably connected to the other end of the connecting block through a second pin, and the first pin and the second pin are perpendicular to each other; and one end of the wrench rod, which is far away from the connecting block, is provided with a long pin.

2. The special wrench for tightening nuts of a gas turbine according to claim 1, wherein: the wrench rod is a multi-path section rod body, and the long pin is fixed at the large-diameter end of the wrench rod.

3. The special wrench for tightening nuts of a gas turbine according to claim 1, wherein: the long pin is arranged in parallel with the pin.