Driving connection device for motor and oil pump

Abstract

The invention discloses a driving connection device for a motor and an oil pump. The driving connection device comprises an end cover (5) connected with the motor (1) and the oil pump (6), wherein the oil pump (6) is connected onto the end cover (5); the end cover (5) is connected onto the motor (1); the driving connection device further comprises a locking device which is located in the motor (1), close to one end of the end cover (5), and connects an output shaft (2) of the motor to a power input shaft (4) of the oil pump (6) in a locking manner; and a plug-in mounting port (14) for mounting and dismounting the locking device is formed in the end cover (5). With the adoption of the structure, the power input shaft of the oil pump is in standard delivery configuration, and is not required to be lengthened to extend into the motor, that is to say the power input shaft of the oil pump is not required to be processed and customized specially, so that the production cost is greatly lowered; the generality of the device is improved; at the same time, the rigid strength of the shaft is greatly improved; and the processing cumulative error is reduced, so that the dimensional precision of the shaft is improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a drive connection device for a motor and an oil pump. Background technique [0002] The motor and the oil pump are two commonly used accessories in the mechanical field. Usually, the power input of the oil pump is driven by the motor, that is to say, the motor and the oil pump are connected through a drive connection device. In the prior art, there are usually several ways for this connection device. The first structure 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 structure is to The input shaft of the oil pump is lengthened and stretched into the motor, so that the oil pump shaft and the motor shaft are also integrated into one shaft. The third kind of standard is that the power input shaft of the oil pump is connected with the motor shaft through a spline stru...

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Problems solved by technology

[0003] 1) Since the output shaft of the motor in the first structure or the input shaft of the oil pump in the second structure needs to be lengthened, in other words, they all need special processing and customization, so the versatility is poor and the processing cost is high;

[0004] 2) In addition, the rigidity of the elongated shaft decreases, and the cumulative error of machining increases, so that the accuracy of the shaft is poor;

[0005] 3) At the same time, after the shaft is lengthened, the stability of the movement decreases and the failure rate increases;

[0006] 4) The third type of structure causes the power input shaft of the oil pump to be connected to the motor shaft without fastening, and there is a gap between the teeth of the spline. In this way, when the motor and the oil pump operate, vibration will occur. On the one hand, there will be noise, on the other hand, it will also accelerate the wear between the spline teeth and reduce the movement reliability of the motor and oil pump

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