Fastener with visual pre-tightening force
A technology for fasteners and pretightening force, which is used to measure torque/torsion force, connecting components and other directions during threaded fasteners and tightening. and other problems, to achieve the effect of facilitating later maintenance and maintenance, improving accuracy and improving performance
Inactive Publication Date: 2022-03-04
孟庆福
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Problems solved by technology
The present invention is mainly used to solve the problem that the existing fasteners cannot display the pretightening force of the fasteners in real time after installation, and furthermore, the faults caused by the change of the pretightening force in the equipment cannot be found in time
Method used
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[0046] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0047] Such as Figure 1 to Figure 7 As shown, a fastener with visual pretightening force includes a threaded part 1, an end part 2, a fixed plate 3, a movable column 4, a rotating plate 5, a sealing plate 6 and an indicating part 7; one end of the threaded part 1 The end portion 2 is provided; the end portion 2 is fixedly connected with the threaded portion 1; the end portion 2 is provided with a groove 8; the inside of the groove 8 is provided with the fixing plate 3; The fixed plate 3 is fixedly connected with the end portion 2; the rotating plate 5 is arranged inside the groove 8; the rotating plate 5 is rotationally connected with the end portion 2; the groove 8 is away from One end of the threaded part 1 is provided with threads; one end of...
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Abstract
The invention belongs to the technical field of fasteners, and particularly relates to a pre-tightening force visualized fastener which comprises a threaded part, an end part, a fixed plate, a movable column, a rotating plate, a sealing plate and an indicating part. During use, a part is in contact with an extrusion gasket, so that a movable column moves, the volume of a liquid cavity is reduced, the pressure in the liquid cavity is increased, a movable plate rotates, the movable plate extrudes a cavity filled with gas, the gas is compressed, and the pressure in the gas is kept consistent with the pressure in the liquid cavity; meanwhile, the pressure is consistent with the pressure acted on the movable column by the liquid cavity; due to the fact that the indicating device is arranged on one side of the sealing plate, along with rotation of the rotating plate, the indicating device can display the pressure condition in the cavity in real time, can display the pressure borne by the piston column in real time, can display the pre-tightening force of the fastener in real time, and can observe the pre-tightening force on the fastener in real time; and therefore, the assembly precision can be improved.
Description
technical field [0001] The invention belongs to the technical field of fasteners, in particular to a fastener with visualization of pretightening force. Background technique [0002] After the fastener is fastened to the locking part (the locked part), it will exert a certain pre-tightening force on the locking part. Usually, there is not much requirement for the size of the pre-tightening force, as long as It is enough to fix the locking parts, but on some relatively sophisticated equipment, during the assembly process of parts, the size of the pre-tightening force often affects the assembly accuracy of parts (for example, during the assembly process of parts, When the pretightening force of the fasteners at different positions on the same component is greatly different, it will cause the component to be deflected, or the levelness or verticality of the component will be poor), which will cause damage to the precision equipment. The overall accuracy is reduced; at the same...
Claims
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IPC IPC(8): F16B31/02G01L5/24
CPCF16B31/02G01L5/24
Inventor 孟庆福
Owner 孟庆福