Large-size drop hammer impact device

Abstract

The invention discloses a large-size drop hammer impact device which is used for testing properties of metals, nonmetals and composite materials. The large-size drop hammer impact device comprises a pile foundation, a holding platform, a rigid platform, a lattice rigid bracket, a high-precision guide track, a drop hammer, a counter weight, a springback prevention secondary hitting system, an excitation device, a rigid wall, a butterfly spring and a jack. The drop hammer comprises two parts, namely a hammer body and a hammer head; a sensor is mounted between the hammer body and the hammer head,the weight of the drop hammer can be freely increased and decreased according to situations, and then testing requirements of different impact masses can be met; the springback prevention secondary hitting system above the counter weight can be immediately locked after a test part is hit for a first time, then secondary hitting can be prevented, and testing precision can be ensured; the excitation device is arranged on the lattice rigid bracket, the excitation device is an ejector and can provide a primary speed for the hammer head in testing, then the impact speed of the drop hammer can be increased, and a high-speed hitting testing requirement can be met. By adopting the large-size drop hammer impact device, both low-speed low-mass hitting testing and high-speed high-mass hitting testing can be met.

Description

technical field [0001] The invention relates to the field of test devices, in particular to a large-scale drop hammer impact device. Background technique [0002] At present, my country's testing machine technology is developing rapidly, and certain achievements have been made in large-scale and refined aspects. However, from the perspective of the overall level of testing machines, there is still a large gap with foreign advanced technical indicators. In particular, the equipment for large-scale full-scale tests is relatively scarce, and the precision of the testing machine is not enough. Therefore, the development of refined and large-scale equipment needs to be focused on. [0003] Drop weight impact testing machine is widely used as the necessary test equipment for measuring the impact resistance of specimens. At present, there are two problems with the drop hammer impact testing machine. On the one hand, the degree of refinement of the drop hammer test machine is not ...

AI Technical Summary

Problems solved by technology

At present, there are two problems with the drop hammer impact testing machine. On the one hand, the degree of refinement of the drop hammer test machine is not enough, and the test piece is directly impacted by the drop hammer. The guide rails and the anti-rebound secondary impact system in the equipment are not installed; on the other hand: The size of the drop weight testing machine is small, and it is difficult to meet the impact test requirements for large components and full-scale components in the fields of civil engineering, aerospace and mechanical engineering at this stage

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