On-column switch opening and closing locking device

Abstract

The invention discloses a column switch opening and closing blocking device. The device is characterized in that a driving torsion bar is installed on a cross arm below a box body through a support; a protective screening is arranged below the box body; one side of the protective screening is connected to the driving torsion bar; a lower end of a protection rod is connected to the driving torsion bar; an upper end portion of the protection rod is arranged on a closing rod outer side tail end; a brake bar baffle plate connected to the protection rod is arranged below a closing rod; one end of the driving torsion bar is provided with a force application arm vertically connected to the driving torsion bar; one end of the force application arm is lower than a horizontal plane and is connected to a stay rope; the stay rope is connected to one end of a pull bar; the other end of the pull bar is connected to a pedestal via a rotating shaft; the pedestal is provided with a pull bar locking hook; the other end of the force application arm is connected to one end of a spring; the other end of the spring is connected to a spring fulcrum bar below the driving torsion bar; and the spring fulcrum bar is connected to the cross arm. The device is safe and reliable, operation is convenient, and accurate, smooth, timesaving and safe performance of operation of operation personnel is guaranteed.

Description

technical field [0001] The present invention relates to a safety device for power supply, in particular to a locking device capable of effectively preventing circuit breakers from being opened and closed by mistake, from pulling and closing an isolating switch with a load, and from switching on and off a pole-mounted switch that prevents power transmission with a grounding wire. Background technique [0002] We know that the safe production of the power supply system is very important. In a set of misoperation prevention devices, a locking control that can realize a certain electrical misoperation prevention function for high-voltage electrical equipment is generally realized by a mechanical locking device or an electrical locking device. At present, the switch on the pole is widely used. The switch on the pole is equipped with a box body, and the box body is set on the cross arm of the line pole. For the safety and stability of the work, the switch on the pole is equipped wi...

AI Technical Summary

Problems solved by technology

At present, the switch on the pole is widely used. The switch on the pole is equipped with a box body, and the box body is set on the cross arm of the line pole. For the safety and stability of the work, the switch on the pole is equipped with two sets of switch devices to control the open circuit in the box. One set is an electric button-type opening and closing button, and the other is a mechanical closing lever. The two sets of switches are linked with each other. The closing lever of the switch on the column is set on the side of the switch box. In general, the opening and closing buttons are generally arranged on the bottom surface of the switch box, and the operation and maintenance personnel or maintenance personnel and other staff can easily touch the opening and closing buttons for opening and closing operations. The gate, closing button and closing lever are easy to touch by mistake, causing situations such as pulling and closing the isolating switch with load, closing with ground wire, etc.; the circuit breaker will trip immediately after the switch device is touched. If it is touched by mistake, it will cause the switch to fail Occurrence of skipping, supply load reduction, etc.

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