Combination table for large vibration test systems

Abstract

The invention discloses a combination table top for a large vibration test system. The combination table top for a large vibration test system comprises a horizontal slide unit pedestal, a bearing installing plate, bearings, an oil groove frame, and horizontal slide plates A, B and C, wherein the bearing installing plate is fixed on the horizontal slide unit pedestal; the bearings are fixed on the bearing installing plate; the horizontal slide plates are arranged on the bearings; the horizontal slide plates A, B and C are fixed through bolts; the body of a vibrating table is connected with the horizontal slide plates through a connecting piece; and the connecting piece is connected with the body of a vibrating table and the horizontal slide plates through bolts. The combination table top for a large vibration test system can perform a combination table top test, and can also disassemble the horizontal slide plates to perform a single table top vibration test, and has the advantages of being high in matching, being high in frequency transmission, and saving the test cost.

Description

technical field [0001] The invention belongs to the field of spacecraft mechanical environment test, and in particular relates to a combined table used for a large-scale spacecraft vibration test system. Background technique [0002] In aerospace, aviation, vehicle and other engineering and technical fields, products work in a certain vibration environment, and structural resonance is one of the main reasons for failures during their operation. As an effective means to test product reliability and dynamic strength, vibration test has been widely used in product performance assessment and dynamic strength appraisal. The main equipment to complete the vibration test is the vibration table. With the development of aerospace technology, the size of spacecraft products is getting larger and larger. The thrust of a single shaking table is difficult to meet the test requirements, and it is difficult to process a single horizontal slide to meet the required size. Therefore, it is c...

AI Technical Summary

Problems solved by technology

[0004] However, the weight of some spacecraft products currently exceeds 25T, the table size is required to exceed 4m×4m, and the anti-overturning moment is required to be greater than 4000kNm, but the current test technical conditions cannot meet the needs of the test. Spacecraft products are not fully assessed during the test process, and product design and manufacturing defects cannot be fully exposed. There is an urgent need to develop a horizontal vibration test system that can carry out large-scale products. To develop a large-scale horizontal vibration test system, the first thing to solve is the related problems of the combined table. question

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