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Special tool for lifting bushing

A special tool and casing technology, applied in the field of special tools for power system casing hoisting, can solve problems such as the need for a large number of operators, uneven force on the pressure equalizing ball, and difficulty in coordination, so as to improve work efficiency and facilitate operation. , the effect of stable force

Inactive Publication Date: 2012-07-25
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the oil-paper capacitive bushing is hoisted from a horizontal state to an upright state, the pressure equalizing ball at the bottom of the bushing is subjected to a large force. On the upper part of the pressure ball, artificial force is applied to make the pressure equalizing ball break away from the bottom of the packing box. Since the cooperation between the artificial force and the force of the crane is difficult to tacitly cooperate, the phenomenon that the pressure equalizing ball is damaged due to uneven force when the casing is hoisted occurs from time to time. , the same problem also exists in the lifting process of CT; in addition, the above-mentioned lifting method also has defects such as long operation time and a large number of operators.

Method used

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  • Special tool for lifting bushing
  • Special tool for lifting bushing
  • Special tool for lifting bushing

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Embodiment Construction

[0018] See Figure 1, Figure 2, image 3 , Figure 4 The composition of the present invention includes a tackle 1 and a fixed plate 2, the tackle 1 is assembled with the bottom of the casing 3, the fixed plate 2 is installed on the top of the casing 3, and the casing sling 4 passes through the fixed plate 2 and connects with the casing. Pipe flange lifting ring 3-1 connection.

[0019] See Figure 1, figure 2 , the tackle 1 in the composition of the present invention is composed of a casing positioning column 1-1, a support frame and two rubber and plastic wheels 1-3, one end of the casing positioning column 1-1 is fixed on the support frame, and the other end penetrates into the In the copper conduit at the tail of the casing, the support frame includes a support plate 1-2 of a rectangular structure and a rubber and plastic wheel mounting seat 1-4 fixed below the support plate 1-2, and the support plate 1-2 is provided with Buffer rubber 1-5, the rubber and plastic wheel 1-...

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Abstract

The invention relates to a special tool for lifting a bushing, which is used for realizing stable lifting of a transformer bushing or a CT (Current Transformer). The special tool comprises a tackle and a fixed plate, wherein the tackle is assembled at the bottom part of the bushing; the fixed plate is arranged at the top part of the bushing; and a lifting rope of the bushing penetrates through the fixed plate and then is connected with a flange lifting ring of the bushing. The special tool has the advantages that the structure is simple, the operation is convenient, not only can the bushing or CT be prevented from being collided and impacted in the lifting process, but also the operation time is shortened, the number of operators is reduced, and the working efficiency is improved.

Description

[0001] technical field [0002] The invention relates to a special tool for casing pipe hoisting in a power system, which belongs to the technical field of hoisting. Background technique [0003] During the installation and maintenance of transformers in power systems, disassembly and assembly of transformer bushings are often encountered. Generally, the disassembly and assembly of bushings is completed through the cooperation of hoisting equipment. When the oil-paper capacitive bushing is hoisted from a horizontal state to an upright state, the pressure equalizing ball at the bottom of the bushing is subjected to a large force. On the upper part of the pressure ball, artificial force is applied to make the pressure equalizing ball break away from the bottom of the packing box. Since the cooperation between the artificial force and the force of the crane is difficult to tacitly cooperate, the phenomenon that the pressure equalizing ball is damaged due to uneven force when th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C1/10
Inventor 叶治坤侯向宏张登坤杨城王朝阳王建杰于汶琦李洪彬吕润正刘勇柴金城刘英沈荣顺
Owner STATE GRID CORP OF CHINA
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