A rolling stone impact crash test system

Abstract

The invention belongs to an indoor test device for rolling stone impact, collision and rupture, which aims to provide a novel rolling stone impact and collision test system. The test system comprises a loading frame, a loading motor, a screw lift, a load cell, a spring-loaded sleeve, a guide sleeve, a spring guide rod, a spring, a specimen loaded head, a specimen clamp, a cylinder, a specimen collision plate, a brackets and a high-speed camera; the loading motor comprises an AC (alternating current) motor and a coupler; the screw lift comprises a worm gear, a worm and a lead screw, wherein the worm and the coupler are connected. The test system has advantages that the test system has simple principle, high precision, simple operation and capability of adapting to different test conditions; with combined action of the loading motor, the lift, the spring and the clamp, sufficient impact speed is provided for a specimen, and different impact speed is provided according to different amount of compression spring; tilt angles of an impact plate are adjusted to provide different impact angles; the high-speed camera is capable of analyzing characteristics of the rolling stone impact and rupture.

Description

technical field [0001] The invention belongs to an indoor test device for rolling stone impact and collision rupture, in particular to a rolling stone impact and collision test system. Background technique [0002] Rockfall is a common type of geological disaster in mountainous areas, which has caused huge economic losses and casualties. Accurately predicting the flight trajectory, influence range and impact force of rolling stones is extremely important for the evaluation and protection design of rolling stone disasters. At present, the field test research mainly used has problems such as high cost, difficult operation, many influencing factors, large error in results, and unclear mechanism. Indoor tests generally use gravity drop impact or pendulum impact: gravity drop impact requires a large space and cannot provide a large impact velocity; pendulum impact operation is complicated, the equipment is expensive, and it is difficult to control the impact angle. In view of t...

AI Technical Summary

Problems solved by technology

At present, the field test research mainly used has problems such as high cost, difficult operation, many influencing factors, large error in results, and unclear mechanism.

Indoor tests generally use gravity drop impact or pendulum impact: gravity drop impact requires a large space and cannot provide a large impact velocity; pendulum impact operation is complicated, the equipment is expensive, and it is difficult to control the impact angle

Images