A portable bolt installation preload test sleeve

Abstract

The invention discloses a portable bolt-installed pretightening force test sleeve, which comprises a sleeve handle, an extension rod, a sleeve head, a jacking mechanism, and a real-time collection and display device for pretightening force; cavity; the ultrasonic test probe of the pre-tightening force real-time acquisition and display device is installed at the lower part of the clamping mechanism; during the detection process, the clamping mechanism is used to keep the ultrasonic test probe in close contact with the bolt head; Iron, the electromagnetic coil can freely control the electromagnetic field inside the ultrasonic test probe, apply the magnetic field when the bolt needs to be sucked, and turn off the magnetic field when it is not needed, so as to facilitate the picking and transferring of the bolt; the piezoelectric chip directly acts on the top of the bolt, During the rotation process, the applied bolt pre-tightening force can be displayed on the acquisition system in real time, and the change of the bolt installation pre-tightening force can be monitored in real time and adjusted in time.

Description

technical field [0001] The invention belongs to the technical field of bolt installation, and in particular relates to a portable bolt installation pretightening force test sleeve. Background technique [0002] Bolts play an indispensable role in defense industry, aerospace, railway transportation, shipbuilding and many other industries. In the product assembly process, most parts and structures need to be fixed with bolts and a certain torque is applied. At present, the torque wrench is usually used to load the bolt pretightening force, and the torque wrench is affected by the bolt, torque wrench and human factors during the loading process, which is prone to errors, and cannot accurately display and load the torque, especially for clearance requirements. When bolts are used for installation and adjustment between two taller products, the loading of the bolt pretightening force is particularly important. However, the existing ultrasonic pre-tightening bolts usually proces...

AI Technical Summary

Problems solved by technology

At present, the torque wrench is usually used to load the bolt pretightening force, and the torque wrench is affected by the bolt, torque wrench and human factors during the loading process, which is prone to errors, and cannot accurately display and load the torque, especially for clearance requirements. When bolts are used for installation and adjustment between two taller products, the loading of the bolt pretightening force is particularly important

However, the existing ultrasonic pre-tightening bolts usually process and modify the bolts. Each bolt is equipped with a piezoelectric chip, which greatly increases the manpower and economic costs. had a certain impact

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