Special tool for dismounting intermediate joint of disconnecting switch

Abstract

The invention discloses a special tool for dismounting an intermediate joint of a disconnecting switch. The special tool comprises a pedestal and two screw rods. Screw rod positioning bases are arranged at the two sides of the upper surface of the pedestal; and inner threads are formed in the screw rod positioning bases. The two screw rods that are located at the same axis are in threaded connection with the screw rod positioning bases respectively; and operation handles are arranged at the opposite ends of the two screw rods. When the tool is in use, an intermediate joint is fixed at the pedestal, the screw rods face a spindle of the intermediate joint, and forces are applied on the spindle by rotating the operation handles, so that dismounting is carried out rapidly and efficiently. According to the invention, on the basis of the pedestal and the dismounting tool, a phenomenon of repeated overturning of the intermediate joint for displacement of parts inside the gear case and knocking of the spindle during the dismounting process can be avoided and the number of the staff is reduced; the screw rods are driven by rotating the operation handles to apply a horizontal thrust on the spindle of the intermediate joint, so that the labor force is saved, the applying force is firm and reliable, and the working security is improved.

Description

technical field [0001] The invention relates to the field of power system maintenance, and more specifically relates to a special tool for removing intermediate joints of isolating switches. Background technique [0002] GW16-220 isolating switch is a single-column vertical fracture isolating switch suitable for 220kV substations. Due to its reliable performance, simple operation and good flowability, it is currently widely used in major 220kV substations in the province and even in the country. [0003] Due to the long-term use of this type of isolating switch, it is prone to problems such as opening and closing difficulties, and the pressure of the clamping contact becomes smaller. It generally requires 10-12 years to disassemble it for overhaul and maintenance. And in the dismantling process, because the structure of this type of isolating switch is very complicated, it brings a lot of troubles to the dismantling and overhauling work of the maintenance personnel. [0004...

AI Technical Summary

Problems solved by technology

The process of dismantling the intermediate joint generally takes up to 5 hours on site, and requires at least 3 people to work, which is time-consuming and labor-intensive

In addition, the traditional demolition method of hammering is easy to cause damage to equipment, and there is also a risk of crushing and injuring personnel

The operation steps are cumbersome and the operation risk is high

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