CN113733003A

CN113733003A - Hydraulic torque wrench reaction force arm fulcrum positioning support

Info

Publication number: CN113733003A
Application number: CN202111037490.9A
Authority: CN
Inventors: 王亚; 李刚; 闫羽佳; 滕文江; 周恩民; 刘恺; 聂徐庆; 张文
Original assignee: Pla 63833 Army; Unit 63837 Of Pla; Shanghai Electric Group Shanghai Electric Machine Works Co ltd
Current assignee: Pla 63833 Army; Unit 63837 Of Pla; Shanghai Electric Group Shanghai Electric Machine Works Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-12-03
Anticipated expiration: 2041-09-06
Also published as: CN113733003B

Abstract

The invention discloses a hydraulic torque wrench reaction force arm fulcrum positioning support, which comprises a positioning module and a backing strip, wherein the positioning module and the backing strip are arranged on a pole shoe plate, the positioning module consists of a main body module and side walls positioned at two sides of the main body module, the lower surface of the main body module is arc-shaped, the radius of the radian of the main body module is consistent with that of the pole shoe plate, the upper surface of the main body module is symmetrically provided with a step structure, the width of the main body module is matched with that of the pole shoe plate, the side walls are provided with positioning grooves and positioning screw holes, and the shape of the backing strip is matched with that of the positioning grooves; the positioning module can be spanned on the pole shoe plate in a front-back sliding mode, the transverse displacement of the positioning module is limited by the side wall, the pad strip is inserted into the positioning groove after the positioning position is selected, and the pad strip and the positioning module are fixed through bolts. The invention can provide a reaction force arm fulcrum for the square-drive hydraulic torque wrench during large-torque fastening operation.

Description

Hydraulic torque wrench reaction force arm fulcrum positioning support

Technical Field

The invention relates to a hydraulic torque wrench reaction force arm fulcrum positioning support used in the field of motor assembly.

Background

For the large synchronous salient pole type magnetic pole shoe plate with the magnetic pole screw fastening torque of about 6000Nm, a conventional torque wrench is adopted during fastening, and the problem of a reaction force arm fulcrum does not exist. For the salient pole type magnetic pole shoe plate with the fastening force of the magnetic pole screw reaching 12000Nm, the conventional torque wrench cannot meet the torque requirement, and the fastening of the magnetic pole screw adopts a square drive hydraulic torque wrench to meet the requirement of large pretightening force. Referring to fig. 1, when the square drive hydraulic torque wrench 1 is used, the reaction arm fulcrum 2 is required to implement the whole wrenching process.

Referring to fig. 2, according to the length of the arm of force of the square drive hydraulic torque wrench, when the pole screw is fastened, the pole screw 3 which is not screwed to the bottom of the adjacent opposite corners can be used as a fulcrum. This approach has some drawbacks. On one hand, when the magnetic pole screw is fastened according to the process requirements, the screw needs to be symmetrically wrenched from the middle to two sides, and so on, so that the situation that the screw at the outermost sides of the two ends cannot have available fulcrums as supports when being fastened can occur; on the other hand, considering that the fastening pretightening force of the screw is large, certain influence is certainly caused to the magnetic pole screw as a fulcrum during fastening operation, even if the tool screw is adopted to replace a product screw as the fulcrum, the influence on the screw thread on the magnetic yoke cannot be eliminated, and meanwhile, the workload of screwing and dismounting the screw can be increased; in addition, the square-drive hydraulic torque wrench has poor stability during operation, and uncertain factors exist in torque input to the magnetic pole screw.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a hydraulic torque wrench reaction force arm fulcrum positioning support which can provide a reaction force arm fulcrum for a square-drive hydraulic torque wrench during large-torque fastening operation.

One technical scheme for achieving the above purpose is as follows: a hydraulic torque wrench reaction force arm fulcrum positioning support comprises a positioning module and a backing strip, wherein the positioning module and the backing strip are arranged on a pole shoe plate;

the positioning module consists of a main body module and side walls positioned at two sides of the main body module, the lower surface of the main body module is arc-shaped, the radius of the radian of the lower surface of the main body module is consistent with that of the pole shoe plate, the upper surface of the main body module is symmetrically provided with a step structure, the width of the main body module is matched with that of the pole shoe plate, the side walls are provided with positioning grooves and positioning screw holes, and the shape of the filler strip is matched with that of the positioning grooves;

the positioning module can be spanned on the pole shoe plate in a front-back sliding mode, the transverse displacement of the positioning module is limited by the side wall, the pad strip is inserted into the positioning groove after the positioning position is selected, and the pad strip and the positioning module are fixed through bolts.

Furthermore, the locating slot is a T-shaped slot, the narrow head side of the locating slot points to the pole shoe plate, and the backing strip is a T-shaped backing strip matched with the T-shaped slot.

Further, the connection part of the step structure on the upper surface of the main body module is chamfered.

Furthermore, the step structure on the upper surface of the main body module is provided with an iron-absorbing drill connecting structure.

The hydraulic torque wrench reaction force arm fulcrum positioning support has the following advantages that:

1. the problem of the fulcrum of the reaction force arm is solved. The fulcrum locating support effectively solves the problem of necessary fulcrum when the hydraulic torque wrench is used, the tool is used as the fulcrum, uncertainty caused by using a magnetic pole screw as the fulcrum to threads is avoided, and reliability, stability and convenience of the square-drive hydraulic wrench when in use are guaranteed. Is a major breakthrough to the prior art.

2. Is convenient to use. According to the process requirements, when the pole shoe plate is provided with more bolts, the pole shoe plate needs to be pulled from the middle to two ends in the pulling process. The tool can move back and forth along the pole shoe plate, and the problem of fastening all the magnetic pole screws (including the magnetic pole screws at the outermost sides of the two ends) on the pole shoe plate is solved. Great convenience is brought to the whole fastening process, and the workload of operation is reduced.

3. After the pole shoe plate is installed, the magnetic pole screw and the pole shoe plate need to be matched with a drill conical end screw, and the tool can also be used as a fixing surface of an iron-absorbing drill, so that convenience is provided for subsequent operation.

Drawings

FIG. 1 is a schematic structural diagram of a square drive hydraulic torque wrench;

FIG. 2 is a schematic view of a square drive hydraulic torque wrench with a pole screw as a fulcrum in the prior art;

FIG. 3 is a view of a hydraulic torque wrench reaction force arm fulcrum positioning bracket of the present invention;

FIG. 4 is a schematic view of a support for positioning a supporting point of a reaction arm of a hydraulic torque wrench as a supporting point of a square drive hydraulic torque wrench.

Detailed Description

In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:

referring to fig. 3 and 4, a hydraulic torque wrench reaction force arm fulcrum positioning bracket according to the present invention includes a positioning module 4 and a backing strip 5 disposed on a pole shoe plate.

The positioning module 4 is composed of a main body module and side walls 41 positioned at two sides of the main body module. The lower surface of the main body module 41 is arc-shaped, the radius of the radian of the lower surface is consistent with that of the pole shoe plate, and the main body module 41 can be fully attached to the pole shoe plate when in contact with the pole shoe plate surface. The upper surface of the main body module is symmetrically processed with a step structure 42 which is used as a supporting position of the hydraulic torque wrench, so that the axial force along the pole shoe plate when the tool is stressed can be reduced, and the axial strength requirement of the tool perpendicular to the pole shoe plate when the tool is stressed is met. And chamfering treatment is carried out on the connecting part at the position of the step in order to reduce the influence of stress. The width of main part module matches with the width of utmost point boots board, has seted up the constant head tank and the location screw of T type on the side wall 41, and its narrow head side is to utmost point boots board, and the shape of filler strip matches with the shape of constant head tank also is T type structure.

The positioning module 4 can be bridged on the pole shoe plate in a front-back sliding mode, the lateral displacement of the positioning module is limited by the side wall, after the positioning position is selected, the pad strip 5 is inserted into the positioning groove in an inserting mode, and the pad strip 5 and the positioning module 4 are fixed through the bolt 6. The step structure is used as a reaction force arm fulcrum of the hydraulic torque wrench.

And an iron absorption drill connecting structure 7 is arranged on the step structure on the upper surface of the main body module 4 and is used as a fixing surface of the iron absorption drill.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a hydraulic pressure torque wrench reaction arm of force fulcrum locating support, includes and sets up orientation module and the filler strip on the utmost point boots board, its characterized in that:

2. The hydraulic torque wrench reaction arm fulcrum location bracket of claim 1, wherein the location slot is a T-shaped slot with a narrow head side pointing to the pole shoe plate, and the backing strip is a T-shaped backing strip matching therewith.

3. The hydraulic torque wrench reaction arm fulcrum location bracket of claim 1, wherein the step structure of the upper surface of the main body module is chamfered at the connection portion.

4. The hydraulic torque wrench reaction arm fulcrum positioning support according to claim 1, wherein the step structure on the upper surface of the main body module is provided with an iron-attracting drill connection structure.