Lock nut structure and installation method thereof
A technology of anti-loosening nuts and installation methods, which is applied in the direction of nuts, screws, bolts, etc., can solve the problems of complex installation technology, complicated processing technology, and long installation time, and achieve low processing technology requirements, low cost, and convenient installation and operation. Effect
Inactive Publication Date: 2015-05-20
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology
[0003] There are various forms of thread anti-loosening structures, and the current anti-loosening structures have their own disadvantages, such as high cost, complicated processing technology, complicated installation process, long installation time, and special installation tools are required.
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[0028] Now in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0029] As shown in the figure, 1 oblique nut; 2 flat nut; 3 bolt; 100 inclined plane; α inclined plane angle; β bolt side bending angle with axis.
[0030] The bolt fastening and anti-loosening structure described in the present invention can be applied to various bolt fastening structures.
[0031] The present invention comprises a slanted nut 1 and a flat nut 2; one end face of the slanted nut is an inclined plane 100, an angle is formed between the inclined plane and the vertical line of the screw hole axis of the slanted nut, and the flat nut and the slanted nut are successively installed on On the bolt, the mating contact surfaces of the two nuts include the slope, and are tightened sequentially. The inclined surface is an inclined plane or an inclined arc surface or an inclined special-shaped curved surface. The end faces of the two ends of the oblique ...
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The invention provides a lock nut structure and an installation method thereof. The lock nut structure comprises a flat nut and an inclined nut, wherein one end face of the inclined nut is an inclined face, an included angle is formed between the inclined face and the perpendicular line of the axis of the screw hole of the inclined nut, the flat nut and the inclined nut are installed on a bolt in sequence, the inclined face is included in the matching contact faces of the two nuts, and the two nuts are fastened in sequence. Two installation modes are available, wherein according to the first installation mode, the flat nut is installed after the inclined nut and the bolt are connected and fastened, and the structure performs the lock function after the flat nut is pretightened; according to the second installation mode, the inclined nut is installed after the flat nut and the bolt are connected and fastened, and the structure performs the lock function after the inclined nut is pretightened. In installation, the inclined face of the inclined nut is located on the contact matching faces between the two nuts, certain bending moment is generated on the bolt by the upper portion due to the fact that the inclined face is not perpendicular to the axis of the bolt, and the lock effect is enhanced through the bending moment. The lock nut structure is simple in overall structure, safe and reliable in use, very convenient to mount and demount, easy and fast to operate, low in cost and convenient to use and popularize in large scales in the production practice.
Description
technical field [0001] The invention relates to a locknut structure, which belongs to the technical field of mechanical manufacturing. Background technique [0002] With the continuous development of the machinery manufacturing industry and the use of various mechanical equipment, threaded fastening structures are widely used in all walks of life. The anti-loosening requirements of threaded fastening structures are also getting higher and higher, especially in harsh service conditions and reliability requirements. High mechanical equipment, such as automobiles, railways, aviation equipment, etc. [0003] There are various forms of thread anti-loosening structures, and the current anti-loosening structures have their own disadvantages, such as high cost, complicated processing technology, complicated installation process, long installation time, and special installation tools are required. This case is committed to providing a reliable, low-cost and easy-to-install anti-loos...
Claims
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IPC IPC(8): F16B39/12F16B37/00
CPCF16B39/12F16B37/00
Inventor 吴双连郭志成孙现亮涂勤书田爱琴丁叁叁王晶凯梁建英
Owner CRRC QINGDAO SIFANG CO LTD