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Transformer tap screw tightening and loosening tool

A technology for transformer taps and tools, applied in the direction of manufacturing tools, hand-held tools, etc., can solve the problems of increased operation difficulty, dislocation, inconvenient force application, etc., to reduce the risk of screw jamming, reduce the possibility of damage, operation convenient effects

Inactive Publication Date: 2021-04-02
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tap switch screw is designed as a circle with a diameter of 55mm, and a straight line is cut symmetrically on both sides. When the tap switch screw is tightened, because there is no suitable tool, only a large wrench can be used. When the connecting wires on both sides of the high and low voltage appear , the large wrench does not have a suitable position to hold the screw, so you can only use a flat-blade screwdriver, put it on the side of the screw, and use a hammer to tighten the screw. During the knocking process, the screw is likely to be deformed and damaged.
[0003] Chinese patent CN204505109U discloses a special-shaped socket wrench for transformer voltage regulating taps. The tap switch screw is adjusted by rotating the sleeve with a rod-shaped handle, but it is mainly realized by applying force on one side of the handle during use. Rotation, on the one hand, is likely to cause uneven force in the screw fastening process, resulting in dislocation and jamming, and on the other hand, one-handed operation is not convenient for the staff to apply force, which increases the difficulty of operation

Method used

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  • Transformer tap screw tightening and loosening tool
  • Transformer tap screw tightening and loosening tool

Examples

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Effect test

Embodiment 1

[0028] Such as figure 1 Shown is the first embodiment of a transformer tap screw tightening tool of the present invention, which includes a force applying part 1, a connecting part 2, a fixing part 3, and a force applying part connected sequentially from top to bottom to make the whole tool rotate. 1 is a handle 11 arranged symmetrically with respect to the central axis of the connecting part 2, and the handle 11 is a telescopic structure.

[0029] As an embodiment of the present invention, the handle 11 can perform telescopic movement along the length direction. Different from the principle of the wine corkscrew that stretches and moves along the arc, the present invention realizes the tightness of the tap screw through the rotation of the handle 11, and the handle 11 that can be stretched along the straight line can extend the force as much as possible in a place with enough space. Arm, to achieve labor-saving effect.

[0030] As an embodiment of the present invention, the...

Embodiment 2

[0039] Such as figure 2The above is the second embodiment of a transformer tap screw tightening tool according to the present invention. This embodiment is similar to Embodiment 1, except that there are four handles 11 in this embodiment. The four handles 11 are vertical in pairs, that is, the four handles are on a plane, and the two adjacent handles are arranged vertically. When the fixing part 3 rotates to different angles, different handles 11 can be applied with force, further improving the convenience of operation.

[0040] As an embodiment of the present invention, the connecting part 2 is a cylindrical shell provided with a hollow cavity, one end of the cylindrical shell is open, the connecting part 2 is connected to the fixed part 3 close to the open end, and the connecting part 2 is far away from the open end and the handle 11 connections. The connecting part 2 forms a whole, which covers the fixed part 3 as a whole like a bell jar. On the one hand, it can facilita...

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Abstract

The invention relates to the technical field of tap auxiliary tools of transformers, in particular to a transformer tap screw tightening and loosening tool which comprises a force application part, aconnecting part and a fixing part which are sequentially connected from top to bottom and used for enabling the whole tool to rotate. The force application part is a handle symmetrically arranged about the central axis of the connecting part; and the handle is of a telescopic structure. The invention aims to overcome the defects of the prior art, and provides the tool for simultaneously applying force to the handle by two hands to enable the device to drive a screw to rotate so as to fasten the screw, so that on one hand, the screw can be stressed uniformly in the fastening process and is noteasy to block, and on the other hand, the screw can be rotated in a more labor-saving manner.

Description

technical field [0001] The invention relates to the technical field of auxiliary tools for transformer taps, and more specifically, to a transformer tap screw tightening tool. Background technique [0002] The tap switch of the transformer is used to adjust the output voltage of the transformer (commonly known as the gear position). Since the voltages in the power system grid are not exactly the same, in order to make the transformer output the rated voltage no matter where it is installed in the grid, it is necessary to The high-voltage winding of the transformer is provided with multiple taps, and the taps are connected to the tap changer. The turn ratio of the high-voltage and low-voltage windings of the transformer can be changed by connecting the tap changer to different transformer winding taps, so as to adjust the output voltage of the transformer. Purpose. There are two types of tap changer: no-load adjustment and on-load adjustment. The former can only adjust the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B27/14
CPCB25B27/14
Inventor 梁达强廖卓光王淞民郭美君黄景云杨成友黄光炎
Owner GUANGDONG POWER GRID CO LTD
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