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Dynamic detecting equipment of pump internal axle axial fitting gap

An axial gap and equipment technology, applied in the field of dynamic testing equipment, can solve the problems of difficulty in guaranteeing repeatability and reliability, and changes in measurement accuracy, and achieve the effects of objective and accurate measurement results, high repeatability, and simple and rapid operation.

Inactive Publication Date: 2008-12-31
SHANGHAI JIAOTONG UNIV +2
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  • Summary
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AI Technical Summary

Problems solved by technology

Although this method performs axial preload on the inner shaft while the inner shaft is rotating, it is difficult to guarantee repeatability and reliability due to manual adjustment of the press-in amount of the outer ring. The height h2 is under the condition of no axial preload, and the measurement accuracy will also change due to the slight elastic recovery displacement and small amplitude swing of the bearing in the axial direction.

Method used

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  • Dynamic detecting equipment of pump internal axle axial fitting gap

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Embodiment Construction

[0011] Such as figure 1 As shown, the present invention includes: an upper pressing mechanism 1, a workpiece positioning mechanism 2, an axial jacking mechanism 3, and an inner shaft rotating mechanism 4, wherein the upper pressing mechanism 1 includes: a cylinder or an oil cylinder 5, a reference pressure block 6, a pressing Insert cylinder block 7, press-in motor 8, reducer 9, synchronous belt 10, push-in rod 11, press-in position sensor 12, height measuring sensor 13. Cylinder or oil cylinder 5 moves up and down close to the end face of the pump body as the reference pressure block 6 of the measurement reference. The side of the reference pressure block 6 is provided with two upper and lower perforated grooves, and the position sensor 12 and the height measurement sensor 13 are pressed into the perforated grooves from the upper and lower sides respectively. and the lower perforation groove; the press-in cylinder block 7 is installed in the center hole of the reference press...

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Abstract

The present invention relates to a detection equipment for detecting axial gap of inner spindle of pump body. Said detection equipment includes upper holddown mechanism, workpiece positioning mechanism, axial lifting mechanism and inner spindle rotating mechanism. Its upper holddown mechanism includes steam cylinder or oil cylinder, reference holddown block, press-in cylinder block, press-in motor, reductor, synchronous band, puller lever, press-in position sensor and height measurement sensor.

Description

technical field [0001] The invention relates to a dynamic detection device used in the technical field of mechanical detection, in particular to a dynamic detection device for the axial fit clearance of the shaft in the pump body during the production and assembly process. Background technique [0002] The fuel injection pump is assembled from a number of mechanical components or parts such as the fuel injection pump body, the oil pump mechanism, the fuel volume adjustment mechanism, and the drive mechanism. The camshaft is the main part of the driving mechanism of the fuel injection pump, and the requirements for the axial clearance of the camshaft are very strict. If the gap is too large, the impact of the roller transmission parts on the cam working surface will increase, resulting in early wear of the cam surface and changing the oil supply advance angle; at the same time, it will easily cause the camshaft to run unstable, and the oil supply will change periodically, cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M65/00
Inventor 孔谅吴毅雄章成军黄炜星相睦杨建夫
Owner SHANGHAI JIAOTONG UNIV
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