Special resistance bar for field work of electric power system

Abstract

The invention discloses a resistance bar special for field operation of an electric power system. The resistance bar comprises a base; a locking device for locking the base on a lower cross beam of anelectric power tower is arranged on the base, a thick round tube is vertically and fixedly arranged on the base in the transverse direction, and a lifting rope is wound on the round tube; the resistance bar further comprises a pulley which is in winding-transmission fit with the upper section of the lifting rope, and the upper end of the pulley is also fixedly provided with a locking device for locking the pulley on an upper cross beam of the electric power tower; and an outer locking device and an inner locking device are further installed on the base. The resistance bar is light in weight,convenient to carry and capable of being rapidly installed at the lower part of the electric power tower or a power transmission tower; the operation of lowering a heavy insulator string can be easilycompleted on the ground by one person, the lowering speed is stable and controllable, and the lifting rope of the lower insulator string can be locked when an emergency occurs, so that it is guaranteed that the insulator string cannot fall off the ground to cause accidents, and the safety of personnel and equipment is high.

Description

technical field [0001] The invention relates to a resistance bar specially used for field operation of a power system. Background technique [0002] Insulator strings are commonly used power devices in power supply lines. Structurally, they are mainly composed of two or more insulator elements, which are used to flexibly suspend wire components. Used to suspend and insulate conductors from towers and earth. Therefore, wherever there are power transmission lines and transmission towers, insulator strings must be used to connect transmission lines and transmission towers, which is widely used and the number of applications is also very large. [0003] In order to ensure the reliable operation of the insulator strings, not only regular inspections are required, but also regular maintenance of the insulator strings is required, and insulator sheets that have problems need to be replaced. Since insulator strings often contain 20-30 pieces of insulation, they are very heavy. Si...

AI Technical Summary

Problems solved by technology

Since there is no special replacement tool, at least several people are required to complete the replacement operation, and it is on a high-altitude transmission tower, so the operation is very difficult

Especially when lowering the insulator strings from a high altitude to the ground, once the hand slips or loosens due to fatigue, the insulator strings will fall directly to the ground, not only easily smashing the ground appendages, but also the insulator strings will suffer irreparable damage

What's more serious is that if there are problems such as fatigue in the high-altitude operators, it will be more dangerous

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