Power failure locking device with loading beam for fatigue testing machine

Abstract

The invention discloses a power failure locking device with a loading beam for a fatigue testing machine. The power failure locking device with the loading beam for the fatigue testing machine comprises the loading beam, guide posts, bolts and actuators, wherein the guide posts are connected into guide holes of the loading beam in a guiding manner; side walls of the guide holes are also provided with open structures which run through the loading beam in an up-down manner and horizontally run through the side walls of the guide holes and an external environment; the open structures comprise first open sections extending along the left-right radial directions of the guide holes; the first open sections run through the side walls of the guide holes; the two side walls of each first open section are mechanically connected through the corresponding bolt to form the interference fit between the corresponding guide hole and the corresponding guide post; one side wall of each first open section is provided with a jacking and loosening hole which is run through in a front-to-back manner; and each actuator penetrates through the corresponding jacking and loosening hole and is tightly jacked on the other side of the corresponding first open section to form the clearance fit between the corresponding guide hole and the corresponding guide post. According to the power failure locking device with the loading beam for the fatigue testing machine, in the working process of the fatigue testing machine, the loading beam is always in a locking state; once an accidental power failure occurs, the loading beam can also stay at a current position; and the testing safety is guaranteed.

Description

technical field [0001] The invention relates to the field of testing, in particular to a power-off locking device for a loading beam of a fatigue testing machine. Background technique [0002] With the rapid development of modern science and technology, national defense industry, instrumentation and other industries, new materials and new processes emerge in an endless stream, and the requirements for the safety and reliability of equipment components and their structures are also getting higher and higher. According to statistics, most of the failures of all equipment and components in use are caused by fatigue cracks in parts and components under dynamic loads, so fatigue testing is particularly important in material testing. Fatigue testing machine is one of the most important test equipment for determining the fatigue strength of materials, and is widely used in aerospace, automobile industry, rail transit, scientific research institutes and other fields. [0003] Fatig...

AI Technical Summary

Problems solved by technology

This method has greatly improved safety, but whether it is a cylinder, an oil cylinder or an electric cylinder, it is driven by a weak electric signal. Once the circuit is abnormal or the control element fails, the locking device (air cylinder, oil cylinder or electric cylinder) It will malfunction and cause a safety accident.

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