Bending load test loading device for self-sealing disengagement joint and loading method
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A technology of loading device and bending load, applied in the direction of applying stable bending force to test the strength of materials, measuring devices, instruments, etc., can solve the problems of lack of corresponding research on bending fracture performance testing, and achieve simple and convenient installation and operation, strong engineering significance , the effect of easy processing
Active Publication Date: 2020-01-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[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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[0047] In order to make the object, technical solution and effect of the present invention clearer and clearer, the following examples are given to further describe the present invention in detail. It should be pointed out that the specific implementations described here are only used to explain the present invention, not to limit the present invention.
[0048] like figure 1 , figure 2 , Figure 5 As shown, the bending static load loading device is composed of a testing machine 1 and a loading platform 4 of the bending static load loading system, wherein the loading platform 4 is mainly composed of an upper clamping end screw 5, a lower clamping end screw 6, and an upper clamping end base 7 , the lower clamping end base 8, the loading arm 9, and the self-sealing shedding joint 10 are assembled.
[0049] The root of the upper clamping end screw 5 has an external thread that matches the internal thread of the top screw hole of the upper clamping end base 7, and the two are ...
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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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