Motor end cover
A technology of motor end cover and end cover plate, which is applied in the direction of electrical components, electromechanical devices, electric components, etc., and can solve the problem that the bearing vibration at the fan end of the motor is greatly affected, the life of the bearing at the fan end of the motor is affected, and the axial length of the motor base is lengthened and other issues to achieve the effect of saving materials, prolonging life and reducing workload
Inactive Publication Date: 2020-03-06
上海电气集团上海电机厂有限公司
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Problems solved by technology
Now, with the development of motors towards high power density and high efficiency, most motors adopt a single-sided large fan structure, which leads to high temperature of the fan end bearing of the motor, which seriously affects the life of the fan end bearing of the motor; in addition, the end cover as the main bearing Force parts, the current structure is a steel plate welded structure, affected by the deflection of the rotating shaft, the axial length of the motor base cannot be lengthened blindly, which requires the end cover to have sufficient strength and rigidity in a limited space; the traditional structure motor end cover and bearing sleeve It is two parts, which have relatively high requirements for machining accuracy and assembly, and have a great influence on the vibration of the fan end bearing of the motor
Method used
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[0015] see figure 1 and figure 2 In order to better understand the technical solution of the present invention, the inventors of the present invention will describe in detail below through specific embodiments in conjunction with the accompanying drawings:
[0016] see figure 1 and figure 2 , a motor end cover of the present invention includes a bearing sleeve 1 and an end cover plate 4 located radially outside of the bearing sleeve 1 . The bearing sleeve 1 and the end cover plate 4 are integrally cast by cast iron HT250 material, so the end cover plate 4 and the bearing sleeve 1 are integrally constructed. The side of the end cover plate 4 close to the bearing sleeve 1, that is, the inner circumference of the end cover plate 4, is provided with an inwardly recessed annular cooling groove 3 located on the outer end surface of the end cover plate 4, and there are several annular cooling grooves 3 inside. Heat dissipation ribs 2.
[0017] In this embodiment, the annular h...
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The invention discloses a motor end cover in the field of motors. The motor end cover comprises an end cover plate and a bearing sleeve, the end cover plate and the bearing sleeve are of an integratedstructure, the outer end face of the end cover plate is provided with an annular heat dissipation groove which is located on the inner circumference of the end cover plate and is concave inwards, anda plurality of heat dissipation ribs are arranged in the annular heat dissipation groove; deweighting grooves are evenly distributed in the outer circumference of the end cover plate, and a reinforcing rib is formed between any two adjacent deweighting grooves in the circumference of the end cover plate. The motor end cover has the technical effects that the problem of poor heat dissipation of amotor fan end bearing is solved, the vibration of the motor fan end bearing is reduced, the service life of the motor fan end bearing is prolonged, the stability of a motor is improved, the strength and rigidity of the end cover are improved, materials are saved, the manufacturing cost of the motor is reduced, and the workload of processing and assembling is reduced.
Description
technical field [0001] The invention relates to a motor end cover in the motor field. Background technique [0002] The motor is mainly composed of a stator and a rotor. The bearing is used as a component to support and position the rotor, and transmits the load from the shaft to the motor frame. Now, with the development of motors towards high power density and high efficiency, most motors adopt a single-sided large fan structure, which leads to high temperature of the fan end bearing of the motor, which seriously affects the life of the fan end bearing of the motor; in addition, the end cover as the main bearing Force parts, the current structure is a steel plate welded structure, affected by the deflection of the rotating shaft, the axial length of the motor base cannot be lengthened blindly, which requires the end cover to have sufficient strength and rigidity in a limited space; the traditional structure of the motor end cover and bearing sleeve There are two parts, wh...
Claims
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IPC IPC(8): H02K5/04H02K5/16H02K5/18H02K5/06
CPCH02K5/04H02K5/06H02K5/16H02K5/18
Inventor 李楠李刚强黄沛沛王溪溪
Owner 上海电气集团上海电机厂有限公司