A clamp performance test device, test method, selection method of assembly parameters and quality inspection method

Abstract

The invention discloses a use performance testing device for a clamping hoop, which is characterized by comprising a tightening ring, a torque driving and measuring device, a pressing force testing mechanism and a data processor, wherein the clamping hoop is a spiral clamping hoop or a screw-adjustable clamping hoop; the tightness degree of the clamping hoop is adjusted by a screw or a bolt; the tightening ring is a shrinkable ring which is made of spring steel, partially opened and partially superposed; the torque driving and measuring device is used for applying an assembling torque load on a worm or the screw of the clamping hoop, and measuring a torque value; the pressing force testing mechanism consists of a diameter testing extensometer and / or a strain gauge measuring system, and the tightening ring; and the data processor receives the axial deformation quantity of the tightening ring from a dial indicator and / or the circumferential deformation quantity of the tightening ring from the strain gauge measuring system, and the torque value from the torque driving device.

Description

technical field [0001] The invention relates to a test device and method, in particular to a clamp performance test device, a test method, a method for selecting assembly parameters and a quality inspection method, which can test the quality of the clamp by testing assembly torque and pressing force. Background technique [0002] Spiral clamps and screw adjustable clamps are common mechanical products, which are composed of bands, covers, worms or screws and nuts. They are mainly used for cables or pipelines in launch vehicles, manned spacecraft and space stations in spacecraft. fastening. It is an important mechanical product that is indispensable for spacecraft. The loosening or cracking failure of the clamp and the damage and failure of the fastened material due to the clamp being too tight can lead to serious consequences. At present, the quality assurance work of the clamp is limited to the control of the performance of the raw materials of the components of the clamp...

AI Technical Summary

Problems solved by technology

[0004] At present, there is no suitable test equipment that can complete the test of the performance of the above-mentioned clamps. The existing torque wrench or torque measuring instrument can only provide torque and measure torque values, while the mechanical testing machine can only test conventional tension, compression, bending, shearing, etc. The mechanical properties of the material under the equal load mode cannot complete the test of the performance of the clamp

The performance index of the clamp that cannot be measured by using the above equipment in combination

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