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A method and device for measuring the length of an automobile transmission shaft under constant pressure

A technology of length measurement and constant pressure, applied in the direction of measuring device, mechanical measuring device, using mechanical device, etc., can solve the problems of inaccurate measurement results, displacement of the shaft center of the shaft tube and telescopic sleeve, affecting the centering effect, etc. High measurement accuracy, improved accuracy, and small footprint

Inactive Publication Date: 2018-10-23
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of measuring the length of the automobile transmission shaft, it is usually necessary to measure the automobile transmission shaft under the action of constant pressure, and when the force is applied, the instantaneous force value is too large, and the universal joint will be bent directly, causing the shaft The axial center of the pipe and the telescopic sleeve deviates, which affects the centering effect and leads to inaccurate measurement results. Therefore, how to ensure that the force value during measurement will not exceed the preset value is also a difficulty of the present invention

Method used

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  • A method and device for measuring the length of an automobile transmission shaft under constant pressure
  • A method and device for measuring the length of an automobile transmission shaft under constant pressure

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Embodiment Construction

[0034] refer to figure 1 and figure 2 Shown, a kind of length measuring device under the constant pressure of automobile transmission shaft of the present invention comprises base 1, slide rail 2, fixed plate 3, movable plate 4, hand crank, limit baffle plate 5, cylinder clamping device, A motor drive device, a tension measuring device and a supporting device, the slide rail 2 is fixed on the base 1, the slide rail 2 is provided with a fixed plate 3 and a movable plate 4, and the bottoms of the fixed plate 3 and the movable plate 4 are all fixed The sliding block 6 matched with the slide rail 2, the fixed plate 3 is connected to a tension measuring device on one side away from the movable plate 4; the tension measuring device includes a force sensor 13 and a sensor holder 14, and the sensor holder 14 is fixed on the base 1, one end of the force sensor 13 is connected to the sensor holder 14, and the other end is connected to the fixed plate 3; above the fixed plate 3 and the...

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Abstract

The invention discloses a method and device for measuring the length of an automobile transmission shaft under constant pressure.The method comprises the steps that the two ends of the automobile transmission shaft to be measured are gently grabbed for centering at first to ensure that an axle tube of the automobile transmission shaft to be measured and the axis of a telescopic sleeve are located on the same straight line, an alternating current servo motor is operated in a torque mode, two limiting baffles on a fixed block and a movable block are driven to compress the two end faces of the automobile transmission shaft to be measured, a magnetic railing ruler is utilized for measuring the distance between two reference faces making contact with the two end faces of the automobile transmission shaft to be measured, the length of the automobile transmission shaft to be measured under the set force value is obtained, and therefore whether the length of the automobile transmission shaft to be measured is qualified or not is judged.The device is simple and compact in mechanism, low in production cost, small in occupied area and accurate in measuring result.

Description

technical field [0001] The invention relates to the technical field of mechanical testing equipment, and more specifically, relates to a method and device for measuring the length of an automobile transmission shaft under constant pressure. Background technique [0002] The automobile transmission shaft is the shaft that can transmit power in the transmission shaft of the universal transmission device. It is a rotating body with high speed and less support. The automobile transmission shaft is the most important component for transmitting power in the automobile transmission system. Together with the drive axle, the power of the engine is transmitted to the wheels, so that the car generates driving force. [0003] The automobile transmission shaft is usually composed of a shaft tube, a telescopic sleeve and a universal joint. The telescopic sleeve is arranged at both ends of the shaft tube, and the two telescopic sleeves are respectively connected to the two ends of the shaf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/02
CPCG01B5/02
Inventor 谢毅
Owner ZHEJIANG GONGSHANG UNIVERSITY
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