Test device for testing torque coefficient of oversized high-strength bolt

Abstract

The invention discloses a test device for testing the torque coefficient of a oversized high-strength bolt, and relates to the technical field of bolt physical performance testing. The test device iscomposed of the following modules: a test platform, a counter-force frame, a power loading device, a loading puller, a puller axial adjustment assembly, a counter-force frame axial adjustment assemblyand a control system. The counter-force frame provides supporting counter-force for the tested bolt, the loading puller is used for clamping the tested bolt and transmitting the supporting counter-force, the power loading device provides torsion power for the tested bolt, and the three modules are matched with the control system so that automatic testing of the torque coefficient of the bolt canbe quickly and accurately carried out. Through axial translation of the counter-force frame and the loading puller, the device can adapt to test requirements of different specifications of tested bolts, and has the advantages of wide application range and high universality.

Description

technical field [0001] The invention relates to the technical field of bolt physical performance testing, more specifically to a test device for testing the torque coefficient of super-large-sized high-strength bolts. Background technique [0002] Bolts are one of the most important connectors in wind turbines and transmission lines. Almost all the main components of wind turbines and transmission lines are connected by bolts. Therefore, the safety design and verification of bolts become very critical in the structural verification of wind turbines and transmission lines. made of. Due to the harsh service conditions of wind turbines and transmission lines, coupled with the impact of extreme heat and cold and extreme temperature differences all year round, wind power bolts and transmission line bolts need to withstand high temperature and low temperature erosion, so wind power bolts and transmission line bolts are required to have high strength, High precision, high grade. ...

AI Technical Summary

Problems solved by technology

[0003] At present, the mechanical performance test of bolts mainly adopts the steel structure bolt torque coefficient testing machine, which has the following shortcomings in the process of use: (1) There are few mechanical items to be tested; (2) The space adjustment ability is poor, and it is only suitable for the test specification of M30. The following bolts are difficult to meet the detection of large-scale and high-strength bolts, and the scope of application is small and the versatility is poor; (3) The torque transmission parts are connected by pure steel, which has extremely high requirements for processing and installation, and it is easy to cause test data Inaccurate; (4) The control system is relatively simple and primitive, and the data needs to be calculated and recorded manually, resulting in high error rate and low efficiency

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