Processing method of circuit breaker shell body
A processing method and technology for circuit breakers, which are applied in the manufacturing of circuits, emergency protection devices, and emergency protection devices, can solve the problems of high cost, long working hours, and easy deformation of the shell, and achieve the reduction of leakage points, reduction of processes, and increase of sealing. The effect of reliability
Inactive Publication Date: 2020-12-04
HUBEI WANGAN TECH
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Problems solved by technology
[0003] The main purpose of the present invention is to provide a processing method for the circuit breaker shell in order to solve the problems of easy deformation of the shell, long working hours and high cost of the above-mentioned existing outdoor circuit breaker by welding the installation bar.
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[0020] see Figure 1-4 , this embodiment includes the following steps:
[0021] Cutting: the two end plates 1, the top cover plate 8 and the middle shell are respectively cut and cut according to the design size;
[0022] Two end plates 1 are bent and formed;
[0023] The intermediate shell is marked according to the drawing and punched out of the flange hole;
[0024] The middle shell is bent into a U-shaped shell 2;
[0025] U-shaped shell 2 folding: the top of both sides of the U-shaped shell 2 is bent into an L-shaped folding 5, using a special forming mold, including an upper mold 10 and a lower mold 9, and the top surface of the lower mold 9 is provided with a cavity. The shape of the bottom of the upper mold 10 matches the cavity, and the profile of the cavity includes a side A13, a side B12 and a side C11, the side A13 and the vertical plane form an angle α, the side B12 forms a β angle with the vertical plane, and the side A13 and the vertical plane form an angle β...
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The invention relates to a processing method of a circuit breaker shell body. The processing method comprises the following steps of: blanking; bending and forming two end plates; scribing the middleshell body according to a drawing and punching a flange hole; bending the middle shell body into a U-shaped shell body; folding edges of the U-shaped shell body, wherein top parts of two side edges ofthe U-shaped shell body are bent into L-shaped folded edges, a special forming die is adopted, the special forming die comprises an upper die and a lower die, a cavity is formed in the top surface ofthe lower die, the shape of the bottom part of the upper die is matched with that of the cavity, the outline of the cavity comprises an edge A, an edge B and an edge C, the edge A and a vertical plane form an angle alpha, the edge B and the vertical plane form an angle beta, the edge A and the edge B are located on two sides, the edge C and the horizontal plane forms an angle alpha, one end of the edge C is connected with the edge B, and the other end of the edge C is connected with the top surface of the lower die; welding two ends of the U-shaped shell body with the two end plates respectively ; and welding lifting lugs and handrails. According to the processing method, working procedures are reduced, working hours are shortened, leakage points generated by welding are reduced, and thesealing reliability of the circuit breaker is improved.
Description
technical field [0001] The invention relates to the technical field of electric facilities, in particular to a processing method for a circuit breaker housing. Background technique [0002] At present, the outdoor circuit breaker housing needs to be waterproof and sealed, and the top cover needs to be installed with a sealing strip. Generally, a long strip of installation strip is welded on the two side walls of the lower case, and then the sealing strip and the cover plate are installed on the installation strip and welded. The strip is easy to deform the shell, and the size of the mounting hole needs to be adjusted to ensure the size of the mounting hole, which requires long man-hours and high costs. Contents of the invention [0003] The main purpose of the present invention is to provide a processing method for the circuit breaker case in order to solve the problems of easy deformation of the case, long working hours and high cost of the above-mentioned existing outdoo...
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IPC IPC(8): H01H69/00
CPCH01H69/00
Inventor 贺晓红王建平曹晶冯财波
Owner HUBEI WANGAN TECH