Swing testing machine for metal hose

Abstract

The invention discloses a swing testing machine for a metal hose. The swing testing machine comprises a base platform, a counter-force support, three stand columns and a servo oil cylinder and is characterized in that the counter-force support is connected with the fixed end of a metal hose test piece with two sealed ends; the three stand columns are in triangular distribution; a cross beam is arranged on the upper parts of the three stand columns; the servo oil cylinder in which a displacement sensor is arranged is hinged in the middle of the cross beam; the lower part of the servo oil cylinder is connected with the swing end of the metal hose test piece through a connection clamp; a displacement trigger is arranged in the horizontal slot of the connection clamp; an upper limit switch and a lower limit switch are arranged on the stand column on the lower side of the cross beam; a pressurization port and a pressure test port are formed on the other side, corresponding to the fixed endof the metal hose test piece, of the counter-force support; a pressure sensor is arranged on the pressure test port; and the servo oil cylinder is connected with a pump station with a temperature sensor. The swing testing machine can be used for realizing high-precision displacement control, unconstrained displacement of an arc line of the metal hose and clamping tests on test pieces of differentspecifications, and has the functions of alarming overtemperature, overpressure, overload, overdisplacement and the like.

Description

technical field [0001] The invention belongs to the technical field of measuring physical parameters of products, in particular to a test device for swinging and bending life of metal hoses. Background technique [0002] At present, the pendulum bending life test method specified in the domestic metal hose standard is a pendulum bending method, which is completely different from the international standard. Since the domestic standard is not synchronized with the international standard, and the domestic standard revision is completed, the upcoming standard The inspection method is consistent with the international standard, so there is no special testing machine suitable for the swing bending life test in the future metal hose standard in China. The purpose of the present invention is to develop a test device adapted to the requirements of future standards, which can realize the swing and bend life test of metal hoses in accordance with international standards, and meet the n...

AI Technical Summary

Problems solved by technology

[0002] At present, the pendulum bending life test method specified in the domestic metal hose standard is a pendulum bending method, which is completely different from the international standard. Since the domestic standard is not synchronized with the international standard, and the domestic standard revision is completed, the upcoming standard The inspection method is consistent with the international standard, so there is no special testing machine suitable for the swing bending life test in the future metal hose standard in China

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