Double-nut reverse-thread anti-loosening fastening device
A technology of reverse thread and fastening device, which is applied in the direction of threaded fasteners, nuts, locking fasteners, etc. It can solve the problem of loosening of forward and reverse nuts, and the inability to realize the mutual locking function of forward nuts and reverse nuts, etc. problem, to achieve the effect of improving safety
Pending Publication Date: 2018-06-05
何长青
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Problems solved by technology
This kind of structure can play the role of mechanical fastening to a certain extent, but in practice, the triangular concave-convex grooves uniformly distributed from the center of the circle to the outside of the two nut pressing surfaces cannot achieve mutual cooperation, so the forward nut and reverse nut cannot be realized. The mutual locking function of the nuts, the forward and reverse nuts will loosen one after another in the vibration environment
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[0016] The present invention will be further explained below in conjunction with the accompanying drawings.
[0017] Such as figure 1 As shown, a double-nut reverse thread anti-loosening fastening device of the present invention is composed of a forward and reverse double-threaded screw, a fastening nut 1 and a limit nut 10. It is characterized in that the fastening nut 1 is close to the fastener, and the limit The position nut 10 is close to the fastening nut 1, and the thread rotation directions of the fastening nut 1 and the limit nut 10 are opposite. When the fastening nut 1 is a right-handed thread, the limit nut 10 is a left-handed thread. , the limit nut 10 is a right-handed thread; the side of the fastening nut 1 close to the limit nut 10 is provided with one, two or more arc-shaped recesses 5, and the arc-shaped groove 5 is formed from the side of the fastening nut 1 The surface is from shallow to deep, and the rotation direction from shallow to deep is opposite to t...
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The invention relates to a double-nut reverse-thread anti-loosening fastening device. The fastening device comprises a forward and reverse double-thread screw rod, a fastening unit and a limiting nut.The fastening device is characterized in that the fastening nut is close to a fastening component, the limiting unit is close to the fastening unit, the fastening nut and the limiting nut have opposite thread rotation directions and are respectively a left rotation threaded nut and a right rotation threaded nut, and the left rotation threaded nut and the right rotation threaded nut can form an interlocked body through circular arc-shaped grooves and movable positioning pins so as to realize bidirectional locking and are not loosened at all during severe vibration. According to the double-nutreverse-thread anti-loosening fastening device, the equipment accidents caused by the loosening of common bolt devices of fixed equipment during the continuous vibration of railways, trains, automobiles and other engineering machinery equipment can be effectively solved, so that the safety of the vibration equipment in the use process is improved.
Description
technical field [0001] The invention relates to an anti-loosening nut, in particular to a double-nut anti-loosening fastening device with reverse threads. Background technique [0002] The anti-loosening of screws has always been a serious problem in industrial manufacturing and industrial products, even a fatal hidden danger, and this kind of safety accident that occurs from time to time has caused unpredictable impact on our daily life, work, transportation, national defense and military production. harm. Therefore, engineers and scientists from all over the world have put into in-depth research on screw loosening prevention for a long time, praying for a final solution. Screw connection is currently the most commonly used connection method. One of the advantages of threaded connection over other connections is that it is detachable and easy to maintain, but at the same time this is also its weakness, especially in large mechanical equipment such as trains, automobiles, ...
Claims
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IPC IPC(8): F16B39/28F16B37/00
CPCF16B37/00F16B39/28
Inventor 何长青
Owner 何长青