A jig for testing the verticality of the tension wheel

Abstract

The invention discloses a fixture for detecting the verticality of a tensioning wheel. The fixture comprises a pedestal and a standing column fixed on the pedestal vertically. One pair of brackets isarranged at the standing column in a sliding manner; and a deviation detecting instrument and a reference detecting instrument are arranged at ends, away from the sanding columns, of the brackets. Thepair of brackets includes an upper bracket and a lower bracket; the deviation detecting instrument is inserted into the upper bracket horizontally and a detecting head of the deviation detecting instrument is exposed out of the upper bracket; a fixation plate is formed on the side wall of the upper bracket; and a notch is formed in the fixation plate. A screw rod inserted into the notch is formedon the deviation detecting instrument, passes through the notch, and is in a screw joint relationship with a fastening nut; and the screw rod can move along the notch. The reference detecting instrument is plugged into the lower bracket horizontally; a pointer head of the reference detecting instrument is exposed out of the lower bracket; and a telescopic rod assembly is arranged between the deviation detecting instrument and the reference detecting instrument. A conversion mechanism is arranged at one side of the deviation detecting instrument and the reference detecting instrument. Therefore, the verticality of the automobile tensioning wheel can be detected quantitatively and conveniently with high efficiency.

Description

Technical field: [0001] The invention relates to the technical field of testing jigs, in particular to a jig for testing the verticality of tension pulleys. Background technique: [0002] During the actual rotation of the automobile engine, the non-uniform linear reciprocating motion of the piston will be converted into the circular motion of the crankshaft, which will inevitably produce torsional vibration of the crankshaft. This non-constant rotating crankshaft will cause the belt motion system to perform variable acceleration. This in turn causes the belt to vibrate. [0003] The belt can be tensioned through the setting of the automobile tensioner, which can effectively improve the technical problem of belt vibration. However, when the verticality error of the pulley before and after the tensioner is installed relative to the reference plane is large, it will cause tension. The belt moves left and right, and when the amount of movement is too large, it will directly cau...

AI Technical Summary

Problems solved by technology

Obviously, the above-mentioned detection method judged by the experience of the inspectors has a relatively large subjective influence, and there is no strict quantitative standard

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