Impact pendulum bob device

Abstract

The invention discloses an impact pendulum bob device. The impact pendulum bob device comprises a mounting seat frame, a swing arm rod and a hammer head, wherein the swing arm rod is of a telescopic rod structure; the upper end of the swing arm rod and the mounting seat frame are hinged through a hinged assembly, wherein the hinged axis of the hinged assembly extends front and back; the lower endof the swing arm rod is coaxially connected with an adjusting flower basket bolt; the hammer head comprises a base plate block, a plurality of counterweight plate blocks, an impact rod, a plurality offirst connecting bolts and a spring; the top of the base plate block is fixedly connected with the lower end of the adjusting flower basket bolt; the hammer head is formed by fixing a certain numberof counterweight plate blocks on the base plate block through first connecting bolts and connecting nuts, flexible adjustment of the hammer head quality is achieved through mounting different numbersof counterweight plate blocks, and free adjustment of the impact momentum is achieved; and an impact seat abuts against the right-most counterweight plate block through the spring, so that the elasticcache design is realized, and the impact rigidity of the hammer head can be adjusted by replacing the springs of different rigidity. The device can be applied to a reinforced concrete structure test.

Description

technical field [0001] The invention relates to the field of reinforced concrete structure testing, in particular to an impact pendulum device. Background technique [0002] With the rapid development of the national economy, the living standards of the people are getting higher and higher, and the transportation facilities are also becoming more and more perfect. The frequency of vehicles hitting bridge piers and freighters hitting sea-crossing bridges has also increased. The impact tests of various scientific researchers on concrete structures such as bridges can be roughly divided into the following categories. One is for real vehicles to hit real piers, and the other is for design The impact impact device impacts the model structure, and the impact impact device is roughly divided into two categories, one is a model car, and the other is an impact pendulum. The design of the existing pendulum is relatively simple, and the disadvantages of the existing pendulum are: The ...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the country's economy, people's living standards are getting higher and higher, and the transportation facilities are becoming more and more perfect. The number of highway bridges is increasing day by day, and the number of cross-line bridges and sea-crossing bridges is also increasing. The frequency of vehicles hitting bridge piers and cargo ships hitting cross-sea bridges has also increased. The impact tests designed by various scientific research scholars for concrete structures such as bridges can be roughly divided into the following categories, one is real vehicles hitting real bridge piers, and the other is design. The impact impact device impacts the model structure, and there are roughly two types of impact impact devices. One is the model trolley, and the other is the impact pendulum. The existing pendulum design is relatively simple. The disadvantages of the existing pendulum are: The length adjustment of the pendulum arm is small, so it cannot adapt to the impact test under different swing arm lengths; the mass of the pendulum cannot be adjusted freely, and the adjustment of the impact momentum is clumsy; the stiffness of the impact end of the pendulum cannot be adjusted, and it is often a hard contact; the impact data during impact cannot be adjusted. Measurements, often derived from theoretical calculations, the results of which are unreliable

As a result, it is difficult to control the various impact parameters. During repeated tests, the test data fluctuates greatly, and the test accuracy is difficult to guarantee.

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