A fully enclosed motor end cover
A motor end cover, fully enclosed technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of complex manufacturing process, poor operation reliability, and difficult design of permanent magnet motors, and achieve reasonable structure and ingenious design Effect
Active Publication Date: 2018-02-16
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
[0003] In order to solve the problems of difficult design, poor operation reliability and complex manufacturing process of the existing permanent magnet motor under the specific temperature rise requirement, the present invention provides a motor end cover with a fully enclosed structure
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Embodiment Construction
[0013] A motor end cover with a fully enclosed structure, including an end cover body 1 and an air duct 2;
[0014] Wherein, the inner front of the end cover body 1 is provided with several front cylindrical bosses 3, and each front cylindrical boss 3 is arranged equidistantly along the circumferential direction; the inner side rear of the end cover body 1 is provided with several rear Cylindrical bosses 4, and each rear cylindrical boss 4 is equidistantly arranged in the circumferential direction; the front end surface of the end cover body 1 is provided with a first annular boss 5 and a second annular boss 6; the second annular boss 6 It is located inside the first annular boss 5, and the front end of the second annular boss 6 is provided with a labyrinth seal; the end surface of the end cover body 1 is provided with an axial air inlet hole 7 and an axial air outlet hole 8; The air inlet hole 7 is located inside the second annular boss 6; the axial air outlet hole 8 is locat...
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The invention relates to permanent magnet motor end cover structures, in particular to a novel motor end cover of a full-closed structure. The novel motor end cover solves the problems that under the specific temperature rising requirement, an existing permanent magnet motor is large in design difficulty, poor in operational reliability and complex in manufacturing process. The novel motor end cover of the full-closed structure comprises an end cover body and an air cylinder. A plurality of front cylindrical bosses are arranged on the front portion of the inner side face of the end cover body. A plurality of back cylindrical bosses are arranged on the back portion of the inner side face of the end cover body. A first annular boss and a second annular boss are arranged on the front end face of the end cover body. The second annular boss is located on the inner side of the first annular boss, and a labyrinth seal is arranged on the front end face of the second annular boss. An axial air inlet hole and an axial air outlet hole penetrate through the end face of the end cover body. The axial air inlet hole is located on the inner side of the second annular boss, the axial air outlet hole is located between the second annular boss and the axial air inlet hole, and an annular positioning pin groove is formed in the inner side face of the end cover body. The novel motor end cover of the full-closed structure is applicable to a permanent magnet motor.
Description
technical field [0001] The invention relates to a permanent magnet motor end cover structure, in particular to a fully enclosed structure motor end cover. Background technique [0002] At present, permanent magnet motors have become an important development direction of high-efficiency and energy-saving motors. However, practice has shown that the existing permanent magnet motor has the following problems due to the limitation of its end cover structure: First, the existing permanent magnet motor end cover structure lacks a bearing cooling structure, which leads to a high temperature rise of the bearing, which leads to the permanent magnet motor It is difficult to design under a specific temperature rise requirement. Second, the existing permanent magnet motor end cover structure lacks a sealing structure with the rotor fan, which causes foreign matter to easily enter the interior of the rotor, resulting in poor operational reliability of the permanent magnet motor. Third,...
Claims
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IPC IPC(8): H02K5/20H02K5/16H02K5/10H02K9/06
CPCH02K5/10H02K5/16H02K5/20H02K9/06
Inventor 贾喜勤倪伟姬春霞周志强刘永强
Owner CRRC YONGJI ELECTRIC CO LTD