Novel heat-dissipation completely-closed traction motor
A traction motor, fully enclosed technology, applied in the direction of magnetic circuit static parts, magnetic circuit shape/style/structure, etc., can solve the problems of low motor power density, low overall heat dissipation capacity of fully enclosed traction motor, etc., to achieve the cost advantage of the motor , The effect of increasing the power density and increasing the heat dissipation area
Inactive Publication Date: 2015-09-02
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
[0007] The invention solves the problem that the overall heat dissipation capacity of the existing vehicle fully enclosed traction motor is low, so the power density of the motor is low, and provides a new heat dissipation fully enclosed traction motor
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[0015] A new type of heat-dissipating fully enclosed traction motor, including the stator part, the stator part is a full lamination including an iron core formed by laminating silicon steel sheets, a compression ring 1 at both ends of the iron core, and a pull plate 2 fixed between the two compression rings structure; the iron core is formed by stacking the large outer diameter punching piece 3 and the small outer diameter punching piece 4 at intervals, thereby forming a ring-shaped cooling rib on the surface of the iron core; the outer circumference of the large outer diameter punching piece 3 is provided with The tie plate slots 5 are distributed at intervals, and the tie plates 2 are embedded in the tie plate slots. During specific implementation, welding is adopted between the drawing plate and the pressing ring. One side of the pressure ring is the motor end cover.
[0016] The new heat-dissipating fully enclosed traction motor has been tested on a kind of urban rail ca...
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The invention discloses to a motor, relates to a traction motor, in particular to a novel heat-dissipation completely-closed traction motor. The problem that an existing vehicle traction motor is lower in overall heat-dissipation performance and accordingly is lower in power density is solved. The motor comprises a stator portion, wherein the stator portion comprises an irony core formed by superposing stamped silicon steel sheets, press rings at two ends of the irony core and a whole-laminated-sheet structure fixed to a pull plate between the two press rings. The irony core is formed by superposing large-outer-diameter stamped sheets and small-outer-diameter stamped sheets at intervals, and accordingly annular heat-dissipation ribs are formed on the surface of the irony core. Pull plate embedding grooves distributed at intervals are formed in the outer circumference of each large-outer-diameter stamped sheet, and the pull plate is embedded into the pull plate embedding grooves. The heat-dissipation efficiency is improved, the heat-dissipation area is increased, the overall heat-dissipation capacity of the motor is greatly improved, the heating level of the same-class motor is improved by about more than 1.7 times. The remarkable improvement of the heating level means improvement of the powder density of the motor, and the motor can output a large torque in a relatively smaller space.
Description
technical field [0001] The invention relates to a motor, in particular to a traction motor, in particular to a novel fully enclosed traction motor for heat dissipation. Background technique [0002] The internal wind pressure of the forced ventilation motor is high, and it is difficult for external dust, water and pollutants to enter the motor chamber. Pollutants will accumulate for a long time, and even splash directly into the motor due to poor operating environment. Pollution (such as water, acid-base gas, seaside salt spray, dust) will cause long-term damage to the motor insulation system, bearings, and ferromagnetic materials. , so the use of fully enclosed motors will effectively solve this pollution problem, but the poor heat dissipation capacity of fully enclosed motors leads to large weight and volume, which limits its application range. Therefore, effectively improving the heat dissipation capacity of fully enclosed motors is the key to expanding the application of...
Claims
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IPC IPC(8): H02K1/12H02K1/20
Inventor 梁刚饶艳虎尚诗贤任延生孟语灵张春杨钟幼康梁培志刘金燕
Owner CRRC YONGJI ELECTRIC CO LTD