Traction motor non-transmission end bearing mounting structure
A non-transmission end, traction motor technology, applied in the direction of electromechanical devices, electric components, casing/cover/support, etc., can solve the problem of large disassembly and damage of the non-transmission end bearing, and achieve the effect of avoiding bearing damage
Active Publication Date: 2021-04-27
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
[0004]
The invention aims to solve the technical problem that the non-drive end bearing of the traction motor is disassembled and damaged
Method used
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[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0030] refer to Figure 1 to Figure 8 , a bearing installation structure at the non-drive end of a traction motor according to the present invention includes a rotating shaft 10, and the end of the rotating shaft 10 located at the non-driving end is sequentially installed with an inner sealing ring 20, an end cover 30, a bearing 40, an outer The bearing cover 50, the outer sealing ring 60 and the outer cover 70, the assembly structure of the aforementioned components here belongs to the prior art, that is, the inner peripheral surface of the inner sealing ring 20 fits on t...
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The invention relates to a bearing mounting structure, particularly relates to a traction motor non-transmission end bearing mounting structure, and aims to solve a technical problem that a traction motor non-transmission end bearing is relatively large in dismounting damage. A plurality of first screw holes are evenly distributed in the inner sealing ring, a plurality of first through holes are evenly distributed in the end cover, a plurality of second through holes are evenly distributed in the outer bearing cover, third through holes are evenly distributed in the outer sealing ring, the first through holes and the second through holes coaxially correspond one to one and can coaxially correspond to the first screw holes one to one through rotating shafts, and the third through holes and the first screw holes coaxially correspond one to one; the diameters of the first through hole, the second through hole and the third through hole are larger than those of the first screw holes, a plurality of second screw holes are evenly distributed in the outer bearing cover, fourth through holes are evenly distributed in the outer sealing ring, the fourth through holes can coaxially correspond to the second screw holes in a one-to-one mode by rotating the rotating shaft, and the diameter of the fourth through holes is larger than that of the second screw holes; when the fourth through hole corresponds to the second screw hole, the third through hole corresponds to the first through hole, a third screw hole is formed in the end face of the rotating shaft, and a fifth through hole is formed in the center of the outer sealing ring.
Description
technical field [0001] The invention relates to a bearing installation structure, in particular to a bearing installation structure at a non-drive end of a traction motor. Background technique [0002] Insulated cylindrical roller bearings and insulated deep groove ball bearings are respectively installed at both ends of the main traction motor of the subway vehicle. Usually insulated deep groove ball bearings are arranged as positioning bearings at the non-drive end where the load and impact are smaller, and are arranged together with the cooling fan of the traction motor. In order to shorten the axial length of the motor, the cooling fan is usually designed as a centrifugal fan (horn-shaped, small inside and large outside), and the insulated deep groove ball bearing must be completely arranged in the bell mouth of the cooling fan (one is to reduce the temperature of the bearing, and the other is to shorten axial length), which causes the traction motor to remove the insul...
Claims
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IPC IPC(8): H02K5/173
CPCH02K5/1735
Inventor 赵英豪许勇吕杰魏娟赵方
Owner CRRC YONGJI ELECTRIC CO LTD