Electromagnetic lock shell for high-voltage switching device and manufacturing method of electromagnetic lock shell

Abstract

The invention discloses an electromagnetic lock shell for a high-voltage switching device and a manufacturing method of the electromagnetic lock shell, belonging to electromagnetic lock parts and manufacturing methods of the electromagnetic lock parts. The shell comprises a body, a screw hole which is used for connecting a positioning plate, a bolt locking hole and a screw hole which is used for fixing an electromagnet coil framework. The shell is characterized in that a rectangular electrical wiring window is designed at one corner at the bottom of a box-shaped body, a screw hole which is used for fixing a travel switch is designed close to the side wall of the rectangular electrical wiring window, a bolt locking assembly locking hole is designed in the rear wall of the box-shaped body, and the shell is made of cold-roll steel sheets. The manufacturing method comprises the following steps of carrying out punching shear to obtain a cross-shaped body material by a punching shear process, and simultaneously punching all the holes; carrying out a punching forming process along four crossing angles of the cross shape of the body material to form the rectangular box-shaped body; and carrying out a welding process on connecting seams among the four walls of the body so as to connect the four walls of the box-shaped body together. Compared with the prior art that the shell is manufactured by five drilling procedures after a zinc-aluminum alloy thin plate is in casting forming, the method has a simple and mature process, the percent of pass of finished products can be more than 99%, and the manufacture cost is reduced by more than 50%.

Description

technical field [0001] The invention belongs to electromagnetic lock components for high-voltage switchgear and a manufacturing method thereof, in particular to an electromagnetic lock housing for high-voltage switchgear and a manufacturing method thereof. Background technique [0002] The operation of high-voltage switchgear must be strictly in accordance with the safety operating procedures stipulated by the industry to achieve: prevent the switch from being pulled on by mistake, prevent the isolation switch from being pulled on the load, prevent it from entering the charged interval by mistake, prevent it from being connected to the ground wire when it is charged, and prevent it from being connected to the ground wire. The "five defenses" requirements for closing. The existing electromagnetic locks for various high-voltage switchgears are just in line with the requirements of this specification. With the cooperation of the lockset and the mechanical structure of the key, ...

AI Technical Summary

Problems solved by technology

[0006] 1. Due to the use of casting technology for molding and metal processing technology to drill 10 holes of 4 different diameters on 5 surfaces, the process is complicated and the number of passes is high, and the operation requirements are high, which not only increases the manufacturing cost, but also affects the qualification of the finished product Rate

[0007] 2. Just because the holes on the casing are processed by drilling technology, it is difficult to process a spacious and reasonable rectangular electrical wiring window, which directly affects the convenience and speed of the subsequent installation process, resulting in the front and rear components of the electromagnet and the matching of the electromagnet The installation of the limit switch of the iron component and the electrical connection of the perforated lead wire appear to be difficult

[0008] 3. The shell is made of high-priced and rising zinc-aluminum alloy materials, resulting in rising costs of electromagnetic locks for high-voltage switchgear

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