Rotary riveting type anti-loosening, anti-withdrawal and re-tightening nut
A torsion riveting, anti-loosening technology, applied in the direction of nuts, screws, bolts, etc., can solve the problems of inability to adapt to the use of re-tightening, can not play the role of anti-loosening, does not have self-locking function, etc., to achieve strong locking force, structure Simple, practical effects
Inactive Publication Date: 2010-12-22
任宝玉
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Problems solved by technology
[0002] Various anti-loosening nuts, fastening nuts, anti-loosening pads, spring pads, etc. in the prior art do not have a true self-locking function, because their anti-loosening structures are based on the principle of parallel tightening, which is a pair of two caps. Top friction self-locking, if the fastened member itself loosens, the tension between the two caps will be lost, and it will not be able to prevent loosening
[0003] The closest existing technology to the present invention is the invention patent (ZL200720031492.6) of the "twist-off anti-theft locking nut". Tightening function, not suitable for fastening applications with high-frequency repeated vibrations such as power transmission towers
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[0016] Attached below figure 1 , 2 An embodiment of the present invention is described.
[0017] A twist-riveting anti-loosening, anti-removal, and retightening nut includes an inner sleeve 1 and an outer sleeve 2. The upper part of the inner sleeve 1 is a regular hexagonal nut head 3, and the lower part of the inner sleeve 1 is a circular tube-shaped inner core 4. Internal threads 5 are formed on the inner wall of the tubular inner core 4, and an annular anti-recession groove 6 is formed on the outer wall of the middle and lower part of the tubular inner core 4, so that the middle and lower part of the tubular inner core 4 forms an annular dangerous section 7 . The profile of the overcoat 2 is a regular hexagon, the overcoat 2 is shaped on an inner hole 9, and the lower end of the inner hole 9 is shaped on a chamfered neck 10, and the inner diameter of the inner chamfered neck 10 small port is greater than the major diameter of the internal thread 5, Smaller than the outer...
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The invention provides a rotary riveting type anti-loosening, anti-withdrawal and re-tightening nut. The nut consists of an inner sleeve and an outer sleeve, wherein the upper part of the inner sleeve is provided with a polygonal nut head; the lower part of the inner sleeve is provided with a circular tube-shaped inner core; the inner wall of the circular tube-shaped inner core is provided with internal threads; the outer wall of the middle lower part of the circular tube-shaped inner core is provided with a ring-shaped anti-withdrawing groove, so that a ring-shaped dangerous cross section is formed on the middle lower part of the circular tube-shaped inner core; the outer sleeve is provided with an inner hole; the lower end of the inner hole is provided with an inner bevel shrinking opening; the inner diameter of a small port of the inner bevel shrinking opening is bigger than the outer diameter of the internal threads, but smaller than the outer diameter of the circular tube-shaped inner core; and the circular tube-shaped inner core on the lower part of the inner sleeve is pressed in the inner hole on the outer sleeve, and the circular tube-shaped inner core and the inner hole are in interference fit. The nut combines functions of anti-loosening, anti-withdrawal, anti-theft and re-tightening, is high in practicability and wide in application range, and is applied to tightening, anti-loosening and anti-theft of electricity pylons, high-speed railways, communication towers, steel structures, highway guardrails and urban public facilities, particularly used for re-tightening, eliminating loosening gaps and improving tightening effect in fields where tightening pieces are repeatedly shocked in high frequency.
Description
technical field [0001] The invention belongs to the technical field of mechanical fastener manufacturing, and in particular relates to a twist-riveting anti-loosening, anti-removal, and retightening nut. Background technique [0002] Various anti-loosening nuts, fastening nuts, anti-loosening pads, spring pads, etc. in the prior art do not have a true self-locking function, because their anti-loosening structures are based on the principle of parallel tightening, which is a pair of two caps. The top friction self-locking, if the fastened member itself is loose, the tension between the two caps will be lost, and it will not be able to prevent loosening. [0003] The closest existing technology to the present invention is the invention patent (ZL200720031492.6) of the "twist-off anti-theft locking nut". The tightening function cannot be used for retightening applications of fasteners with high frequency and repeated vibrations such as power transmission towers. Contents of ...
Claims
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Login to View More IPC IPC(8): F16B37/00F16B41/00F16B39/28
Inventor 任宝玉
Owner 任宝玉