Expansion bench for double-vibration table parallel-thrusting vibration test

Abstract

The invention discloses an expansion bench for a double-vibration table parallel-thrusting vibration test, which includes a panel, a pedestal and a force transmission mechanism. A plurality of screw holes are arranged on the panel. A plurality of connection holes are arranged on the pedestal. The force transmission mechanism is arranged between the panel and the pedestal and includes vertical plates, short inclined rib plates, long inclined rib plates, and vertical rib plates. The two long inclined rib plates are respectively arranged out of the two vertical plates. The mutually adjacent long inclined rib plates and the vertical rib plates are connected through the two parallel vertical rib plates. The two short inclined rib plates are respectively arranged at two ends of the two vertical plates. Each short inclined rib plate is connected to a corresponding end of the two vertical plates. Through arrangement of the force transmission mechanism formed by the vertical plates at the middle part, the long inclined rib plates and the vertical rib plates at the two sides, and the short inclined rib plates at the two ends, power of the double-vibration table surface is stably and high efficiently transmitted to a clamp / test piece. Under the premise that the structure rigidity satisfies a vibration excitation transmission demand, the structure is simplified, the mass is lightened, the power loss is reduced, the cost is saved, and the vibration load transmission efficiency is raised as possible.

Description

technical field [0001] The invention relates to an extension table for a double vibration table parallel push vibration test, in particular to an expansion table for a double vibration table parallel push vibration test with high structural rigidity and high vibration load transmission efficiency. Background technique [0002] When carrying out the vibration test of a large mass specimen, the thrust of a single shaking table may be insufficient to carry out the test. In the prior art, a dual-vibration table or multi-vibration table parallel pushing method is adopted to solve this problem. The extension table for double vibration table parallel push vibration test is an auxiliary device connected between the double vibration table and the fixture / specimen (ie fixture or specimen), and plays the role of transmitting vibration load. [0003] The expansion table for the traditional double-shaking table parallel-push vibration test is a general frame structure. During the test, ...

AI Technical Summary

Problems solved by technology

[0003] The expansion table for the traditional double-shaking table parallel-push vibration test is a general frame structure. During the test, it was found that the rigidity of the traditional double-shake table parallel-push vibration test expansion table is insufficient, the vibration load will be significantly attenuated, and the specimen will still appear Problems that do not meet the due assessment

If the size of the expansion table is only increased according to the traditional method, the quality of the expansion table will also increase accordingly, which will cause the expansion table to consume most of the thrust, resulting in insufficient thrust and a significant reduction in the transmission efficiency of vibration loads

Images