An oil pump test fixture and its assembly method

Abstract

The invention relates to an oil pump test fixture connected with an oil pump to be tested. The oil pump test fixture comprises a connecting flange provided with an arc-shaped step surface, an adaptor, a test bed, a base and pressing plates. The base is provided with a step corresponding to the step surface. The connecting flange is fixedly connected with the base under the pushing action of the pressing plates. The step surface of the connecting flange abuts against the step, so that movement of the connecting flange in the vertical direction is restrained. One side of each pressing plate is bent towards the base to form a right-angled edge. Two sides of the base are each provided with a protruding edge relative to the connecting flange. The right-angled edges abut against the protruding edges, so that movement of the connecting flange in the horizontal direction is restrained. A rotary shaft of the oil pump to be tested penetrates through the base and is connected with the test bed through the adaptor. The oil pump test fixture has the beneficial effects of greatly simplifying the assembling process, relieving burdens on technicians, guaranteeing the concentricity of a pump body output shaft and a test bed frame connecting shaft, and improving test accuracy.

Description

technical field [0001] The invention relates to an oil pump test device, in particular to an oil pump test fixture and an assembly method thereof. Background technique [0002] The base of the existing oil pump test fixture directly supports the output shaft of the oil pump to be tested. Because the specifications of the oil pumps to be tested are different, the height of the output shaft is also different. Therefore, the base is generally used to match the oil pump with the lowest output shaft height for adjustment. After the technician assembles the oil pump to be tested with the fixture, the concentricity of the output shaft of the oil pump to be tested and the connecting shaft of the test bench will easily have a large deviation. If the transmission system inside the pump body is tested in this case, there will be Abrasion affects product performance. In order to avoid the occurrence of the above situation, technicians have to raise the base, and the oil pump to be test...

AI Technical Summary

Problems solved by technology

After the technician assembles the oil pump to be tested with the fixture, the concentricity of the output shaft of the oil pump to be tested and the connecting shaft of the test bench will easily have a large deviation. If the transmission system inside the pump body is tested in this case, there will be Abrasion, affecting product performance

In order to avoid the occurrence of the above situation, technicians have to raise the base, and the oil pump to be tested must be removed first to raise the base, otherwise it will cause damage to the output shaft of the oil pump, so the test efficiency is very low, and the operating requirements for technicians also higher

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