Double-platform shunt-excitation horizontal vibration test system with combined table facet

Abstract

The invention discloses a double-platform shunt-excitation horizontal vibration test system with a combined table facet, and the system comprises two vibrating platform bodies, two external supporting seats, one internal supporting seat, two connecting pieces, a horizontal sliding table substrate, a bearing installation plate, a bearing structure, an oil tank frame, a horizontal sliding plate A, and a horizontal sliding plate B. The internal supporting seat is disposed between the two external supporting seats, and the two vibrating platform bodies are respectively disposed between the internal and external supporting seats in a supported manner, and are respectively in detachable connection with the horizontal sliding plates A and B, supported above the bearing structure, through the connecting pieces. The bearing structure is a bearing structure which enables the horizontal sliding plates to vibrate in an excitation direction in a unidirectional manner. The bearing structure is fixed on the bearing installation plate, and the bearing installation plate is fixed on the horizontal sliding table substrate. The system can carry out combined test, also can analyze the horizontal sliding plates, carries out a single-platform vibration test, is good in matching performance, is good in performance of frequency transmission, and saves the test cost.

Description

technical field [0001] The invention belongs to the technical field of spacecraft mechanical environment tests, and in particular relates to a double-stage parallel-excited horizontal vibration test system for large-scale spacecraft vibration tests. 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...

AI Technical Summary

Problems solved by technology

[0005] At present, the tabletops of these multiple parallel excitation test systems at home and abroad are processed by welding or casting. For some spacecraft products weighing more than 25T, the tabletop size is required to exceed 4m×4m. If magnesium alloy plates are used for welding Therefore, more than three base metals are required for welding, and the deformation caused by welding is not easy to control, and it cannot be split into a single unit. Therefore, a set of dual-unit horizontal sliding tables with an anti-overturning moment requirement greater than 4000kNm has been developed. A parallel excitation test system is very necessary

Images