A device for testing the anti-loosening performance of threaded fasteners

Abstract

The invention proposes a device for testing the anti-loosening performance of threaded fasteners, including a base, a power system, an amplitude adjustment system, a lateral vibration system and a sensing system, and the power system, the amplitude adjustment system, and the lateral vibration system are all fixed on the base Above, the power system is a variable frequency motor, which is connected to the amplitude adjustment system through a coupling. The amplitude adjustment system mainly adjusts the vibration amplitude through the eccentric wheel. The eccentric wheel drives the horizontal vibration system to move horizontally through the connecting rod, and monitors the test device in real time through the sensor system. the vibration amplitude. The invention has the advantages of simple structure, convenient amplitude adjustment, accurate test data, and can truly reflect the change of the pretightening force of the threaded fastener under the action of the lateral load.

Description

technical field [0001] The invention belongs to the technical field of vibration test devices for fasteners, in particular to a test device for testing the anti-loosening performance of threaded fasteners. Background technique [0002] Fasteners are currently one of the most widely used mechanical connectors, mainly used in various mechanical equipment, such as vehicles, ships, railways, bridges, etc. Fasteners are often subjected to lateral or longitudinal vibration loads when they undertake the connection function. Under the accumulation of such effects, the fasteners will gradually loosen, which will cause the fasteners to lose their connection function. Cause equipment or components to fail or be damaged, and even lead to safety accidents. Fastener lateral vibration testing machine is specially developed for testing the anti-loosening performance of fasteners. By testing the anti-loosening performance of fasteners, we can understand and choose the performance of fastene...

AI Technical Summary

Problems solved by technology

[0005] (1) The vibration amplitude of the testing machine cannot be adjusted or the adjustment is cumbersome, which makes the test more difficult. Even when bolts and nuts of different specifications are tested with the same amplitude, the data measured by the test is not enough to reflect the real working status of the bolts and nuts. The determination of loose performance cannot be used for theoretical basis;

[0006] (2) It is unreasonable to adopt the steel plate connection structure at the joint between the transmission device and the vibration test bench, which is likely to cause damage to the mechanical structure and low performance of the testing machine

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