Plugging device for bus duct jack box

Abstract

A bus duct jack box disclosed by the present invention comprises a jack box body, a pin seat assembly, a hinge device and a plugging device, the plugging device comprises a shell, a transmission mechanism, a chain and a chain wheel engaged with the chain, the transmission mechanism is movably arranged in the shell, a power input end of the transmission mechanism is arranged outside the shell, the transmission mechanism is connected with the chain wheel for driving, and the chain wheel is connected with the pin seat assembly. The chain wheel and the chain are both arranged in the shell, one end of the chain extends out of the plugging box body, and the pin base assembly, the hinge device and the plugging device are all arranged on the same side of the plugging box body. The structure provided by the invention is small in size, improves the plugging stability of the bus duct plugging box and the bus duct, guarantees the normal operation of equipment, and reduces the potential safety hazards. And meanwhile, the convenience of pulling out the bus duct jack box is improved. The plugging device and the pin seat assembly are installed on the same side of the plugging box body, so that the strength of the plugging box body around the pin seat assembly is improved, the plugging is more powerful, and the deformation of the bottom plate of the plugging box is reduced.

Description

technical field [0001] The invention relates to the technical field of a busbar slot plug-in box, and more particularly, to a pull-out device for a busbar slot plug-in box. Background technique [0002] At present, the bus duct plug-in boxes on the market are all plug-in structures. The conductive copper pins at the bottom of the plug-in box are inserted into the copper pile heads in the socket of the bus duct to complete the electrical connection of the plug-in box. The external connections are mainly front and rear. The lock hook and guide plate fix the plug box on the busway. Only after the inner copper pin and the copper pile head are inserted into place, the outer lock hook can be fixed. Similarly, pulling out the plug-in box mainly separates the copper pins from the copper pile heads. The copper pins are mainly composed of spring clips made of copper conductive sheets and manganese steel. The conductive copper sheets of the copper pins are clamped with the pile heads ...

AI Technical Summary

Problems solved by technology

Copper pins are mainly spring clips made of copper conductive sheets and manganese steel. Through the clamping force of the spring sheets, the conductive copper sheets of the copper pins are clamped with the pile heads in the socket socket of the busway to ensure the reliability of power supply. In order to maintain the clip of the spring, the gap between the two conductive pieces of the copper pin is small, resulting in too much clamping force inserted into the pile head. A single copper pin needs about 30 kg of force to insert the copper pin into the copper pile head.

When the five pins are plugged together, the resistance is very high, which will cause the bottom of the box to deform, which will lead to improper plugging, resulting in high temperature at the contact point between the pins and the pile head during the operation of the plug-in box, which will lead to insulation aging and cause Short circuit accident, resulting in power outage

At the same time, the volume of the plug-in box above 400A is too large, and the box body cannot be optimized when the standard design is followed

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