A lubricating device for traction motor bearings

Abstract

The invention is a lubricating device for a traction motor bearing, belonging to the field of bearing lubrication. The lubricating device is provided with oil filling holes 27, 35 and 30 and oil drainage holes 31, 37, 38 and 39, all of which are formed on the rotating shaft 1 and the shaft core 24 of a motor, respectively, wherein the oil filling holes 27 and 35 are communicated with oil filling cavities 32 and 34 on one side of a front bearing, respectively; and oil drainage cavities 33 and 36 on the other side of the front bearing are communicated with annular oil return cavities through the oil drainage holes 31, 37, 38 and 39. The devices realizes respectively independent oil filling and oil drainage of the front and rear bearings; while filling oil, the oil is only needed to be filled into an oil cup 18 on the oil filling holes; ageing oil automatically flows into the oil drainage holes to enter the oil return cavities; and once a spring retainer ring between the shaft core and the rotating shaft is detached, the shaft core can be withdrawn and the waste oil can be discarded. The lubricating device of the invention solves the problem of difficult operation of lubricating the traction motor bearing, and is capable of realizing grease lubrication of the front and rear bearings simultaneously to prolong the service lives of the bearings.

Description

technical field [0001] The patent of the present invention relates to a lubricating device for a bearing, especially a lubricating device for a traction motor bearing. Background technique [0002] The traction motor is a low-speed and high-torque motor. The bearing is an important part of the motor. It plays a supporting role in the motor and bears a large alternating radial direction. Therefore, the life of the bearing is an important parameter of the life of the motor. After the motor has been running for a period of time, the bearing should be filled with grease to reduce friction and prolong the life of the bearing. For mining vehicles, the working environment is particularly harsh, and the traction motor is bulky and difficult to disassemble. In the prior art, the bearings can be lubricated by opening oil injection holes and oil discharge holes on the motor end cover and the bearing end cover, but it is only for the lubrication of a single front end bearing or rear en...

AI Technical Summary

Problems solved by technology

For mining vehicles, the working environment is particularly harsh, and the traction motor is bulky and not easy to disassemble

In the prior art, the bearings can be lubricated by opening oil injection holes and oil discharge holes on the motor end cover and the bearing end cover, but it is only for the lubrication of a single front end bearing or rear end bearing, and the front and rear bearings cannot be lubricated at the same time; there are also The traction motor uses self-lubricating bearings, but the service life of this kind of bearings is short, and the wear will increase after a period of time, so it must be replaced in time. This method is not only difficult to operate, but also poor in economy.

For traction motors with structural assemblies at the front and rear ends, the above-mentioned method of opening oil passages on the end cover can no longer be implemented. At present, most of these motors use one-time filling of grease, and disassembly and disassembly are required to add grease. The front end structure assembly of the motor, the motor end cover, the bearing end cover, the whole motor, etc. are difficult to disassemble and assemble, but if the bearing is not filled with grease, the bearing life will be shortened, because the bearing and the motor shaft are assembled by hot pressing during installation , It is very troublesome to repair and replace the bearing, which brings a lot of inconvenience and economic loss to the user

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