Buffer device for super-heavy-load tensile tester

Abstract

A buffer device for a super-heavy-load structural parts tensile tester comprises a clamp (2), a main clamp head (3), an auxiliary clamp head (4), a displacement sensor (5), buffer bars (6), buffer retainer rings (7), loading cylinders (8), guide rails (9), force sensors (10), hydraulic buffer cylinder bases (11), hydraulic buffer cylinders (12), springs (13), a return cylinder (14), buffer cylinder pistons (15), and buffer cylinder barrels (16). The hydraulic buffer cylinders and the springs are in two-stage series connection for buffering, impact energy of the clamp heads and the clamp is largely converted into heat energy for liquid in the hydraulic cylinders, the heat is dissipated by air, and small part of the heat energy is converted into deforming potential of the springs. In addition, the springs serve as a return buffer system. Adjustment buffer time is larger than or equal to critical buffer time, so that the hydraulic buffer cylinders are imparted with fine buffering action. The buffer device is reasonable in design, stable in buffering, convenient to control, and high in reliability.

Description

technical field [0001] The invention relates to a buffer device for a tensile testing machine when a structural part is damaged under a super large tensile load. It adopts a hydraulic buffer cylinder and a spring for two-stage series buffering, and proposes a method of controlling the buffering effect of the hydraulic buffer cylinder by adjusting the buffer time The method realizes the cushioning design and protection of the ultra-large load testing machine, especially relates to the mechanical performance test of the ultra-large load structural parts, and belongs to the field of ultra-large load mechanical testing technology and safety. Background technique [0002] With the rapid development of the machinery industry, traditional small-tonnage material testing machines can no longer meet the test requirements for large-scale component performance testing of structures such as buildings, bridges, instruments and ships. Practice has proved that it is not reasonable and accur...

AI Technical Summary

Problems solved by technology

However, the structure of the buffer system is relatively complex, the reliability is low, the manufacturing cost is high, and the control is relatively complicated. The buffer effect is greatly affected by the sealing effect and the life of the sealing device.

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