Lead plug-in type junction box and installation method

Abstract

The invention relates to a wire plugging type junction box and an installation method, and belongs to the technical field of junction box parts. The junction box comprises a junction box body, the junction box comprises three groups of voltage and current lines which are sequentially divided into a phase A, a phase B and a phase C from left to right, the phase B is arranged to be of a wire plug-pull type structure located in the junction box, and each plug-pull type clamping piece comprises the following two parts: a base which is a square hollow piece, and a threaded hole matched with a screw is formed in the side wall of the base; the clamping pieces and the base are integrally machined and formed, a left clamping piece and a right clamping piece extend out along the two side walls of the base, each clamping piece is arranged in a waveform mode, and clamping faces are symmetrically arranged relative to the central axis of the base to form the clamping pieces for clamping a wire; limiting protrusions used for spacing are arranged between the clamping pieces. According to the invention, the meter installation and power connection time of the plug-in junction box is obviously shortened, and the efficiency is obviously improved.

Description

technical field [0001] The invention relates to a wire plug-in junction box and an installation method thereof, belonging to the technical field of junction box components. Background technique [0002] For areas with many high-voltage users, the periodic rotation of meter installation and connection and electric energy meters is particularly heavy. In this process, the time for disconnecting the secondary connection line of the junction box becomes very important. How to send electricity to users as soon as possible, improve the work efficiency of meter installation and connection, and reduce the time of meter installation has become the key. The traditional method of connecting the meter is to connect the voltage and current wires to the junction box through the wires in the control cable, and then connect to the meter through the outgoing wires. Each wire is compressed by two fixing screws. [0003] The power metering device is used to monitor and measure the amount of e...

AI Technical Summary

Problems solved by technology

[0003] The power metering device is used to monitor and measure the amount of electric energy used. The three-phase four-wire electric energy metering joint junction box widely used in the market is mainly connected to the wires through screws. At least 40 screws need to be disconnected to complete the installation and connection of the electric energy meter. , and each wire needs to be fixed with two screws to ensure the reliability of the conduction, but there is no visual window for the insertion depth of the wire, the length of the wire insulation stripped and whether each screw can be effectively pressed on the wire can only be operated by hand and experience. It is easy to cause virtual connection or wire skinning

There is no standard for the degree of tightness when tightening the screws, and it depends entirely on the strength of the individual wrist, which may easily cause wire extrusion deformation or insufficient wire extrusion to make a false connection

When wiring, it is necessary to switch back and forth between the wire stripper and the screwdriver. Frequent switching of tools is time-consuming and labor-intensive, which affects work efficiency.

[0004] The disadvantages are: (1) The wiring process of the junction box is time-consuming; (2) Whether the screw can be pressed on the wire or on the wire insulation can only be based on hand feeling and experience; (3) The degree of tightness of the screw is determined by the strength of the individual wrist , it is easy to cause wire extrusion deformation or wire virtual connection; (4) There is a problem of frequent switching tools during the wiring process

Images