A rotation detection device and detection method for wind power structure studs

Abstract

A device and method for detecting the rotation of a stud of a wind power structure comprises a rack (1), a clamping device (2), a rotating platform (3), a driving device (4), a control system (5), a traction rope (6), a gravity stretching device (7), an axis force sensor (8), a torque sensor (9), an angular displacement sensor (10), and a display (11). The clamping device (2) is fixed on the rack (1). The rotating platform (3) is provided with multiple reversing devices (3-1). One end of the traction rope (6) is connected to one unclamped end of the wind power stud, and the other end is sequentially wound across the multiple reversing devices (3-1). The gravity stretching device (7) is suspended on one end of the reversing device (3-1) finally wound by the traction rope (6). Measured data are transmitted, and a rotation-pulling force curve for representing the rotation ability can be drawn. The detection device and the detection method fill detection blanks on the rotation of the stud of the wind power structure in the nation.

Description

technical field [0001] The invention relates to the detection field of studs, in particular to a rotation detection device and detection method for wind power structure studs. Background technique [0002] Structural studs are usually used to frictionally connect various engineering structures. In addition to meeting all mechanical properties and chemical composition requirements, structural studs must also fulfill functional requirements, that is, control of preload and reasonable preload. Stable and effective control is directly related to the installation effect and service life of structural parts. [0003] In the last century, after learning from the advanced technologies, standards and international standards of developed countries such as the United States and Japan, my country formulated the technical specifications for structural studs and began to produce structural studs. Head Bolt Connection Pair" and GB / T3632 "Torsional Shear Type High-Strength Bolt Connection P...

AI Technical Summary

Problems solved by technology

[0004] Different from the above-mentioned structural studs, most of the structural studs used in wind farm equipment are under harsh service conditions, so the requirements for the corrosion resistance of the studs are very high. There are two methods of material selection, one is weather-resistant steel, This material has relatively few resources and high cost. The second type is carbon steel or alloy steel. This material must be supplemented with good anti-corrosion measures to adapt to the use of wind power plants.

At present, most of the anti-corrosion treatments are hot-dip galvanized or dacromet. However, the coating of hot-dip galvanized is very thick, and the surface is relatively rough, and the screw-in performance of the studs will actually be disturbed.

[0005] Usually, the galvanized wind power structure bolts will not be tested for rotation capacity before the stud manufacturer delivers them for use, which will cause great safety hazards. For studs without lubrication or insufficient lubrication, when the specified rotation angle is not reached , the nuts and studs are bitten or the threads are bitten

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