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Pneumatic/electric torque spanner dynamic calibrating installation

A verification device and wrench technology, applied in the direction of wrenches, power tools, wrenches, etc., to enhance the function of the device, solve the driving and verification accuracy, and achieve good results

Inactive Publication Date: 2007-11-28
CHANGAN AUTOMOBILE (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a pneumatic / electric torque wrench dynamic verification device for the deficiencies in the prior art, so as to solve the verification problems related to pneumatic and electric torque wrench in JJG 707-2003 "Torque Wrench" measurement verification regulations

Method used

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  • Pneumatic/electric torque spanner dynamic calibrating installation
  • Pneumatic/electric torque spanner dynamic calibrating installation

Examples

Experimental program
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Embodiment Construction

[0016] Referring to Figure 1, the pneumatic / electric torque wrench dynamic verification device is composed of a loading power source, a flexible buffer, a strain gauge torque sensor and a measurement output system. The loading power source is composed of a scroll air compressor 14, an air tank 13, an oil-water purifier 11, a compressed air filter 10, a precision pressure gauge 9 and a stabilized power supply 5. Among them, the scroll air compressor 14, the air storage tank 13, the oil-water purifier 11 and the compressed air filter 10 are connected in sequence by the air pipe to form a whole, the precision pressure gauge 9 is installed on the pipeline, the condenser 12 is located behind the air storage tank 13, and the built-in Condensate through which the air pipes pass. The tested torque wrench (pneumatic) 8 is connected to the end of the pipeline. If the electric torque wrench is to be measured, the gas tank 13 regulated power supply is directly connected to the tested elec...

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Abstract

The invention is related to the device of pneumatic / electric torque spanner dynamic test, consisting of turbinated air compressor, gas tank, oil-water purifier, air compressed percolator, exact pressure gauge, increase the power source consisting of a few voltage-stabilized source, high accuracy pressure air source or accuracy voltage-stabilized source or electro motion torque spanner, examined torque spanner communicates with strain torque sense organ through flexible buffer, the output system of measuring consists of dynamic strain gauge, data gathering and computer. Measuring the work torque of the examined torque spanner stimulates actual condition through flexible buffer. Buffer consists essentially of dishing spring. The device can stimulate actual condition of pneumatic / electro motion torque spanner, and gathers actual work torque at high-speed through multifunctional test instrument, realizing the torque of dynamic measuring, realizing the dynamic test of pneumatic / electro motion torque spanner.

Description

technical field [0001] The invention relates to a dynamic verification device for a torque wrench, in particular to a dynamic verification device for a pneumatic / electric torque wrench. Background technique [0002] In the national metrology verification regulation JJG 707-2003 "Torque Wrench", it is clearly stipulated that pneumatic and electric torque wrenches are used as torque measuring instruments, and they are included in this regulation for measurement verification like conventional torque wrenches. However, there is no corresponding special verification device in China at present. Therefore, there is no specific verification method for pneumatic and electric torque wrenches in this regulation. [0003] At present, Liaoyang Jinfan Instrument Co., Ltd. and Chongqing Heping Automation Engineering Co., Ltd. have developed JFD intelligent dynamic torque measuring instrument and torque test bench respectively. The characteristics of the former ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B23/14B25B21/00
Inventor 李正华陈建华刘兴智孔小林刘攀
Owner CHANGAN AUTOMOBILE (GRP) CO LTD
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