一种动态拉伸试验快速夹紧释放机构

The rapid clamping and release mechanism, composed of a hydraulic cylinder and an elastic energy storage element, solves the problem of material testing machines being unable to release after high-load-rate stretching, and realizes the rapid release of metallic materials when dynamic stretching stops and the acquisition of mechanical property parameters.

CN120609639BActive Publication Date: 2026-07-17NUCLEAR POWER INSTITUTE OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NUCLEAR POWER INSTITUTE OF CHINA
Filing Date
2025-06-17
Publication Date
2026-07-17

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Abstract

本发明涉及材料拉伸试验技术领域，提供一种动态拉伸试验快速夹紧释放机构，包括：液压缸，连接有液压动力组件；弹性储能元件，安装于液压缸的缸体上；工装底板，与液压缸的活塞杆固定，并在活塞杆推力作用下压缩弹性储能元件；上拉杆和下拉杆，两者共同连接试件，下拉杆下端设有锥形受夹部；夹紧部件，其包括固定于工装底板上的夹座和沿圆周方向间隔布置的若干夹爪，夹爪下端与夹座铰接；盖板，与液压缸的缸体相对固定，内部设有用于挤压夹爪上端的锥形孔，以使夹爪夹紧锥形受夹部；以及位置检测元件，以在上拉杆加载到目标位置时发出释放信号。本发明能够实现拉伸到特定距离时使试件快速释放，从而获取金属材料在动态拉伸停止时的力学性能。
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