Lock nut structure with screw pitch difference
An anti-loosening nut, pitch difference technology, applied in the direction of nuts, screws, bolts, etc., can solve problems such as hidden safety hazards, affecting the normal use of mechanical equipment, and not being frequently shut down for maintenance and easy to loose fasteners, so as to reduce losses and improve Safety and reliability, the effect of preventing loosening
Pending Publication Date: 2020-05-08
时元成
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Problems solved by technology
[0003] However, fasteners used in important mechanical equipment, mechanical equipment working in dangerous places, mechanical equipment that cannot be shut down frequently for maintenance, and mechanical equipment with complex structures that are difficult to maintain are prone to loosening under shock, which has potential safety hazards. Affect the normal use of mechanical equipment
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[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] Such as figure 1 As shown, the embodiment of the present invention discloses a locknut structure with pitch difference, which is screwed on the bolt 1 to fasten the fastened part 2, including a fastening nut 3 and a lock nut 4, the fastening nut 3 has a self-locking external thread 31; the lock nut 4 has a self-locking internal thread 41; the self-locking external thread 31 is meshed with the self-locking internal thread 41; the pitch of the self-lockin...
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The invention discloses a lock nut structure with a screw pitch difference. The lock nut structure is screwed on a bolt to fasten a fastener. The lock nut structure comprises a fastening nut and a locking nut. The fastening nut is provided with a self-locking external thread; the locking nut is provided with a self-locking internal thread; the self-locking external thread is in engaged connectionto the self-locking internal thread; and the screw pitch between the self-locking external thread and the self-locking internal thread is greater than the screw pitch of the thread of the bolt. The fastening nut and the locking nut as a whole are screwed into the bolt during use. When the screwing torque of the fastening nut reaches a rated torque, the locking nut is then screwed. The bolt and thefastening nut are fastened together by means of the screw pitch difference between the self-locking external thread and the self-locking internal thread and the thread of the bolt to achieve a purpose of preventing the fastening nut from being loosened as a result of vibration, so that the safe reliability of equipment in work can be improved greatly and the loss of mechanical equipment caused bythread loosening breakdown rate is reduced.
Description
technical field [0001] The invention relates to the technical field of mechanical fasteners, in particular to a lock nut structure with pitch difference. Background technique [0002] Fasteners are a type of mechanical parts that are used for fastening connections and are widely used. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc., in various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments All kinds of fasteners can be seen on the , chemical industry, instruments and supplies, etc., which are the most widely used mechanical basic parts. [0003] However, fasteners used in important mechanical equipment, mechanical equipment working in dangerous places, mechanical equipment that cannot be shut down frequently for maintenance, and mechanical equipment with complex structures that are difficult to maintain are pr...
Claims
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IPC IPC(8): F16B39/18F16B33/02F16B37/00
CPCF16B39/18F16B33/02F16B37/00
Inventor 时元成宋立闽马小石
Owner 时元成