Multi-bonding point high-load inclined pushing-type loading device

Abstract

The invention relates to the structure static load test technology and particularly relates to a multi-bonding point high-load inclined pushing-type loading device. The device comprises a step type force transmission tool (20), inclined columns (23), P1-P8 loading equipment (24), a test platform (25), a foundation (29), P3-P16 loading equipment (22), P9-P12 loading equipment (21), bearing bases (30), wedge form supports (31), 400 ton pressure type dynamometers (32), force transmission pressure bars (33), high bearing bulb nest combinations (35) and loading tools (34). The P1-P8 loading equipment (24) provide upward loads in an axial direction. The loading tools (34) are connected to a test piece and provide upward loads in an oblique direction for the test piece. With the adoption of the multi-bonding point high-load inclined pushing-type loading device, the core level front bonding low temperature combined static load test can be smoothly completed, and a sound test technical reserve is provided for enforcement and conduction of the follow-up type low temperature static load test.

Description

technical field [0001] The invention relates to structural static test technology, in particular to a multi-binding point high-load oblique push type loading device. technical background [0002] With the continuous progress and development of aerospace science and technology, it is an inevitable trend in the development of rockets in the world that major scientific and technological countries develop large-scale and even heavy-duty launch vehicles. Low-temperature fuel is the propulsion energy of contemporary advanced spacecraft, and these fuels are contained in pressurized storage tanks , while the storage tank is subjected to loads such as axial pressure, bending moment, shear force, internal pressure and temperature during production, storage, hoisting, parking, transportation and flight, so the structural strength, stiffness and low temperature comprehensiveness of the storage tank during use Performance is very important to design and manufacturing, and needs to be ver...

AI Technical Summary

Problems solved by technology

The test structure required by this project is a multi-section joint assembly, and the test installation height will naturally increase a lot; in order to make the local area of ​​the primary oxygen box 3 close to the front bundle 4 be in a low temperature environment, the test piece must be properly At the same time, the upper end of the test boundary is required to be fixed; the application point of the concentrated force load of the bundled support 5 is relatively close to the test piece, and the single point load can reach 300 tons; plus the section axial compression load of the front short shell 7 of the first-level hydrogen tank , the axial load that needs to be balanced by the test installation frame exceeds 1240 tons; at the same time, considering the size limit of the test platform of the test site and the difficulty of the site conditions such as the small tonnage of the bearing points of the foundation, these all bring great challenges to the design of the test scheme and the process of test implementation

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