Bending load test loading device for self-sealing disengagement joint and loading method

Abstract

The invention relates to a dynamic load and static load testing device and method for the bending performance of an emergency disconnecting device, and belongs to the field of mechanical property testing. The bending static load testing device comprises a testing machine, an upper clamping end screw, a lower clamping end screw, an upper clamping end base, a lower clamping end base, a loading forcearm and a self-sealing disengagement joint. The bending dynamic load testing device comprises a loading force arm, an upper half, a lower half, a self-sealing disengagement joint, a rigid base, a dynamic load loading platform, a drop hammer, an adjusting mass block, an acceleration sensor, a positioning pulley, a flexible rope, a pressing block, a dynamic load sensor and a buffer pad. The deviceis simple, reliable and convenient to operate, is improved compared with the existing testing device which only tests the bending load, comprehensively considers the factors such as the loading rate,the dynamic load acting time, the clamp speed variation and the load size, meets the related requirements of the testing standard, and has important engineering significance in the aspect of determining the bending breaking load of the self-sealing disengagement joint.

Description

technical field [0001] The invention belongs to the field of mechanical performance testing, and specifically relates to a dynamic load and static load test device and a test method for the bending fracture performance of an emergency disconnection device, in particular to a test method for testing the bending fracture performance of a self-sealing shedding joint after a helicopter crash Dynamic load and static load test device and test method. Background technique [0002] The crash performance of the helicopter needs to be considered in the design to ensure the safety of the occupants. The self-sealing drop joint plays a key role in ensuring that there is no additional damage such as fuel leakage, fire, explosion, etc. after the crash. During the use of the self-sealing shedding joint, it is necessary to meet the specific breaking load requirements, so that the joint does not break during normal use, but breaks when it is impacted by a crash. For the bending fracture load...

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Problems solved by technology

[0004] At present, domestic self-sealing shedding joints are still in their infancy. For the tensile performance test, the invention patent "Loading device and method for tensile dynamic load test of self-sealing shedding joints" (application announcement number: CN 110095357 A) The test device and scheme of the tensile test have been made, but there is a lack of corresponding research on the bending performance test

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