Multi-point multi-directional drop hammer impact device and test method

Abstract

The invention, which relates to the technical field of mechanical property testing, provides a multi-point multi-directional drop hammer impact device and a test method. The multi-point multi-directional drop hammer impact device comprises a curvature impact table, anti-collision columns, supporting side plates, a cross beam, guiding sliding blocks, impact guiding tubes and a drop hammer. The cross beam is arranged above the supporting side plates. The anti-collision columns are arranged on the curvature impact table. The guiding sliding blocks are arranged on the cross beam and can slide along the cross beam; and the upper ends of the impact guiding tubes are connected with the guiding sliding blocks. The anti-collision columns include column bodies, capturing rods, and springs; two capturing rods are fixed at the end surface of each column body; and springs are arranged between the capturing rods. When the device is used for testing, the impact energy and direction can be adjusted based on needs, an impact point can be set accurately, and multiple drop hammers can be released to simulate multi-point impact loads. Therefore, technical problems of fixed impact point, single impactangle, and secondary hamper dropping in the deep roadway similar material simulation testing are solved. The device has advantages of great convenient in operation and precise controlling and the like.

Description

technical field [0001] The invention relates to the technical field of mechanical performance testing, in particular to a drop hammer impact device realizing multi-point and multi-direction and a method for using the device to carry out roadway dynamic load simulation test. Background technique [0002] In the similar simulation test of deep roadway, dynamic load needs to be applied to the roof of the roadway, and the application of dynamic load is usually achieved by impacting with a drop hammer. However, there are problems such as insufficient impact force, secondary hammering, and single impact angle in the impact test using a drop hammer . The drop hammer impact device is set on a similar material model, and most of them can only achieve frontal impact test. It is difficult to realize multi-angle drop hammer impact test on the same drop weight impact device, such as fixed angle, fixed impact point and other impact methods. Even if the multi-angle drop weight impact test...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of fixed impact point, single impact angle and secondary drop hammer in the simulation test of similar materials in deep tunnels, the present invention provides a multi-point and multi-directional drop hammer impact device and test method. The specific technical scheme is as follows

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