Adjustable impact test device and method

Abstract

The invention provides an adjustable impact test device and a method. According to the device, an upper central rolling shaft is fixed on a reaction wall of a test room, four groups of round steel rods with thread at two ends serve as rigid connection rods, abutting of the connection rods is realized via abutting nuts, bottom connection rods fix a circular disk pendulum bob on the connection rods via insertion plates at the end parts, a set of pendulum bob system is formed together with the upper rolling shaft, and the connection rods can be used for conveniently adjust a position of the pendulum bob on a different impact point. A clamp is arranged at a pendulum bob impact point for mounting a pressure sensor, a lifting hole and mounting holes are reserved in the middle of the upper part of the pendulum bob, a loading hole is reserved 45 degrees obliquely, and a steel wire rope passes through the loading hole and sleeves an X-shaped sliding hook. A first hand chain hoist is used for adjusting the pendulum bob, the sliding hook is used for fixing the pendulum bob at an initial height, a second hand chain hoist is used for pulling the sliding hook to release the pendulum bob, gravity potential energy of the pendulum bob is converted to kinetic energy, a specimen is impacted, and through changing the initial height of the pendulum bob and the pendulum bob of different masses, different impact speeds and energy can be conveniently and quickly provided.

Description

technical field [0001] The invention relates to an impact test method, in particular to an impact test device that can provide variable speed and energy. Background technique [0002] With the rapid development of the shipping industry and the increasing scale of the city, accidents of ships colliding with bridges and vehicles colliding with bridges have occurred from time to time. The collision problem has become a hot research field in universities and scientific research institutions. Experiments are used to study the impact force and energy changes during the impact process. But at present, due to the high cost of large and medium-sized impact testing machines, complicated operation, and high use and maintenance costs, only a few units can complete the impact test research of real structures; The size is small, and the maximum impact velocity and energy that can be provided are very limited, making it difficult to complete the impact test research on larger components. ...

AI Technical Summary

Problems solved by technology

But at present, due to the high cost of large and medium-sized impact testing machines, complicated operation, and high use and maintenance costs, only a few units can complete the impact test research of real structures; The size is small, the maximum impact velocity and energy that can be provided are very limited, and it is difficult to complete the impact test research of larger components

[0003] Due to the above-mentioned problems, the impact test is greatly restricted, making it impossible for some units to carry out the impact test, which hinders the research and development of the impact problem

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