Connection device between motor and oil pump

Abstract

The invention relates to a device for connecting a motor with an oil pump, and the device comprises a first end cover and a second end cover, wherein the first and second end covers are respectively connected with the motor and the oil pump, and respectively provided with a matched connecting mechanism. An output shaft of the motor is in fastening connection with an input shaft of the oil pump through a locking apparatus. The locking apparatus comprises a first part and a second part, which are in mutual buckling connection. One end of the first part axially extends to form a conical linking column, and, correspondingly, the output shaft of the motor is provided with a conical hole which is used for the inserting and fastening of the conical linking column. One end of the second part is provided with an installation hole which is used for the inserting and fastening connection of the input shaft of the oil pump. The other end of the first part and the other end of the second part are correspondingly provided with convex teeth which are matched with each other. The first end cover, the second end cover and the locking apparatus enable the motor to be connected with the oil pump, thereby facilitating the disassembly. The device can be widely used for a common motor or oil pump, and is better in universality. The shaft length is integrally shortened, and the operation stability of equipment is greatly improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a connection device between a motor and an oil pump. Background technique [0002] Generally, the oil pump needs to be driven by the motor to run normally. The quality of the connection between the oil pump and the motor directly affects the working efficiency and service life of the oil pump and the motor. [0003] There are generally three connection methods commonly used between the oil pump and the motor. Among them, the first one is to extend the output shaft of the motor and extend it into the oil pump, so that the motor shaft and the oil pump shaft are integrated into one shaft. The second is to connect the output shaft of the oil pump. The input shaft is lengthened and extended into the motor, so that the oil pump shaft and the motor shaft are connected into one shaft. Both of these connection methods need to lengthen the shaft at the connection. On the one hand, the rigid...

AI Technical Summary

Problems solved by technology

[0003] There are generally three connection methods commonly used between the oil pump and the motor. Among them, the first one is to extend the output shaft of the motor and extend it into the oil pump, so that the motor shaft and the oil pump shaft are integrated into one shaft. The second is to connect the output shaft of the oil pump. The input shaft is lengthened and extended into the motor, so that the oil pump shaft and the motor shaft are connected into one shaft. Both of these connection methods need to lengthen the shaft at the connection. On the one hand, the rigidity of the lengthened shaft is reduced, which will lead to the After the oil pump is connected, the stability of operation decreases and the failure rate increases; on the other hand, the specifications of the general-purpose motor and the oil pump are fixed. If the shaft needs to be lengthened, it needs to be specially processed and customized. Not only the processing cost is high, but also the specially customized motor Or the versatility of the oil pump is poor, and it is not easy to maintain and repair

[0004] The third connection method between the oil pump and the motor is to connect the power input shaft of the oil pump to the motor shaft through a spline structure in the motor. Although this connection method is simple and easy to operate, the power input shaft of the oil pump and the motor shaft There are no fastening measures between them, and there is a gap between the teeth of the spline. When the motor drives the oil pump to run at high speed, it will generate strong vibration, which not only increases the noise during operation, but also increases the friction between the spline teeth. The effect also reduces the reliability of the connection between the motor and the oil pump, affecting the smooth operation of the equipment

[0005] In addition, when the above connecting device is used to connect the oil pump and the motor, the shaft-to-shaft connection between the oil pump and the motor is difficult to connect accurately, which seriously affects the coaxiality of the connection between the oil pump and the motor, and further reduces the stability of equipment operation ; and the use of couplings to connect the shafts of the oil pump and the motor not only increases the equipment expenditure, but also the connection between the oil pump and the motor is exposed to the air for a long time, and it will inevitably be contaminated with dust and other sundries, which increases the cost of the equipment. Maintenance cost; moreover, the connection between the above motor and the oil pump is complicated, which is not convenient for the disassembly and replacement of the motor or the oil pump

Images