Manufacturing method of electric locomotive transformer oil pump wiring board
A technology for electric locomotives and manufacturing methods, which is applied to the assembly/disassembly of contact parts, electrical components, electromechanical devices, etc., and can solve problems such as uneven injection pressure, oil leakage from terminal posts, gas gaps between terminal boards and terminal posts, etc., to achieve Simple processing, prevent leakage, and improve insulation performance
Active Publication Date: 2015-11-18
ZHUZHOU RONGDA RAILWAY ELECTROMECHANICAL
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Problems solved by technology
[0003] The terminal boards of electric locomotive transformer oil pumps on the market are mainly made of metal terminal posts and non-metallic terminal boards. The terminal posts and terminal boards are combined by injection molding process, but during the injection molding process, due to uneven injection pressure , under the action of air pressure, there is an air gap between the terminal board and the terminal
During the long-term use of the transformer oil pump, due to the pressure and vibration impact of the transformer, due to the existence of the gas gap between the terminal post and the terminal board, the oil leakage at the terminal post is caused, and there are quality and safety hazards
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[0030] Such as figure 1 , figure 2 As shown, the electric locomotive transformer oil pump terminal board includes an upper metal part 5, a 95-alumina ceramic body 4, a lower metal part 3, a metal terminal post 2 and a metal terminal board 1, and the metal terminal board 1 is made of No. 45 steel or Q235A steel plate , the metal terminal 2 is made of No. 45 steel, which is easy to process and low in cost; there is a mounting hole on the metal terminal plate 1, and the ninety-five alumina ceramic body 4 is inserted in the installation hole, and the metal terminal 2 is inserted in the ninety-five alumina Inside the ceramic body 4 and protruding from both ends of the 95-alumina ceramic body 4, the upper metal part 5 is arranged between the top of the 95-alumina ceramic body 4 and the metal terminal 2, and the lower metal part 3 is arranged on the 95-alumina ceramic body 4 and the metal terminal board 1; the metal terminal 2, the upper metal part 5, the ninety-five alumina cerami...
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The invention discloses a method for manufacturing an electric locomotive transformer oil pump wiring board. The method comprises the following steps of manufacturing parts, manufacturing a metal wiring board and a metal binding post, stamping an upper metal piece and a lower metal piece, manufacturing a pressure resisting ceramic body, assembling the wiring board, carrying out overall welding and completing manufacturing. The wiring board comprises the metal binding post, the upper metal piece, a 95aluminum oxide ceramic body, the lower metal piece and the metal wiring board. The thickness of the metal pieces is 0.8 mm, and the pressure resisting ceramic body comprises an upper cylindrical segment and a lower cylindrical segment which are integrated. The diameter of the metal binding post is equal to or slightly smaller than the diameter of the inner circle of the pressure resisting ceramic body. The electric locomotive transformer oil pump wiring board manufactured through the method is excellent in performance, easy to mount, easy to process, low in cost and good in insulation performance. The sealing performance and the oil pressure resisting performance of the wiring board are guaranteed through the metal and ceramic welding structure, a 0.8 MPa pressure leakage test is borne, leakage cannot occur, and the service life of an oil pump is prolonged.
Description
technical field [0001] The invention relates to the technical field of electric locomotive transformer oil pumps, in particular to a method for manufacturing an electric locomotive transformer oil terminal board, which is mainly used for electric locomotive transformer oil pump terminal blocks. Background technique [0002] At present, domestic electric locomotive transformer oil pump products are developing towards high speed and high efficiency, and in the harsh open-air environment, choose a suitable terminal board to protect the normal operation of the transformer oil pump and prolong the service life of the electric locomotive transformer oil pump. [0003] The terminal boards of electric locomotive transformer oil pumps on the market are mainly made of metal terminal posts and non-metallic terminal boards. The terminal posts and terminal boards are combined by injection molding process, but during the injection molding process, due to the uneven injection pressure , Un...
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IPC IPC(8): H01R43/20H02K5/22
Inventor 黄立新
Owner ZHUZHOU RONGDA RAILWAY ELECTROMECHANICAL
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