Rotary arm type horizontal impact test device

Abstract

The invention discloses a rotary arm type horizontal impact test device, which comprises a bottom plate, an impact part, a rotary base, a torsion spring, a rotary arm, a tachymeter, a reverse tractionrope, a winch, a reaction wall and a test component, wherein the rotary base is vertically fixed on the upper end surface of the bottom plate, the torsion spring sleeves the rotary base, the rotary arm is rotatably connected to the top end of the rotary base, a bearing is embedded in the lower end face of the rotary arm, a one-way rotary damper is embedded in the upper end face of the rotary arm,and hole teeth meshed with a key tooth shaft of the one-way rotary damper are arranged at the top end of the rotary base; the impact part is vertically arranged on the side wall of one end of the rotary arm, and the reaction wall is fixed on the bottom plate on one side of the impact part; and the other side wall of one end of the rotary arm is detachably connected with the traction rope of the winch, and the winch is fixed to the bottom plate. The rotary arm type horizontal impact test device is not limited by the clearance of a laboratory, a specially-made reaction frame is not needed, impact parameters are easy to adjust, the change range of impact energy is large, and the impact test can be conveniently and repeatedly carried out.

Description

technical field [0001] The invention relates to the field of impact protection test devices for civil engineering components, in particular to a rotary arm type horizontal impact test device. Background technique [0002] Civil engineering components (beams, columns, etc.) may be subject to impact loads, such as vehicle / ship impact, rockfall impact, etc. Impact testing is an important means to know the impact resistance of engineering components and perform impact protection. The current structure (component) impact test device is mainly divided into three types, one is a vertical impact drop hammer, the second is a pendulum similar to a horizontal and lateral impact, and the third is a linear acceleration horizontal impact device. Both the drop hammer and the pendulum need to set up a reaction frame in the laboratory to facilitate the installation of the impact part, and the impact energy is limited by the clearance of the test space; since the impact energy of both is con...

AI Technical Summary

Problems solved by technology

Both the drop hammer and the pendulum need to set up a reaction frame in the laboratory to facilitate the installation of the impact part, and the impact energy is limited by the clearance of the test space; since the impact energy of both is converted from the gravitational potential energy, the After the head jumps, the hammer head falls again under the action of gravity, which is likely to cause a secondary impact

However, the impact energy of the linear acceleration horizontal impact device is limited by the length of the laboratory linear acceleration, so it is not widely used.

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