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Dislocated check spindle locknut

A technology for locking nuts and spindles, applied in the directions of nuts, locking fasteners, screws, etc., can solve the problems of stress concentration on the shaft, complex structure, affecting the bearing capacity and fatigue life, etc., to improve stress distribution, improve occlusion state, the effect of improving fatigue life

Inactive Publication Date: 2011-05-04
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution requires slotting on the shaft, which will cause stress concentration on the shaft and affect the bearing capacity and fatigue life
The structure of this nut is complex, and the processing and assembly process is still cumbersome

Method used

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  • Dislocated check spindle locknut
  • Dislocated check spindle locknut
  • Dislocated check spindle locknut

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing.

[0017] see image 3 and Figure 4 , a main shaft lock nut is marked in the figure, which includes the inner side of the nut body and the deformed body on the thread, the lock nut, the set screw, and the lock screw.

[0018] in:

[0019] The inner side of the nut body and the deformed body on the thread deform under pressure, so that part of the thread on the deformed body is tightly engaged with the thread on the shaft to achieve the purpose of anti-loosening. In addition, due to the deformation of the deformed body, the thread on the nut body The thread produces a slight misalignment, which can also ensure the lock nut's anti-loosening.

[0020] The lock nut must be screwed to the specified position to realize its axial positioning function.

[0021] The set screw must be tightened according to the specified torque to pressurize the deformable body to deform the deform...

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PUM

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Abstract

The invention discloses a dislocated check spindle locknut for a wind generating unit. The nut is characterized in that a plurality of deformed bodies are cut on the inside (comprising threads) of a nut body, and pressure is applied to the deformed bodies so that the threads are compactly meshed and generate slight dislocation, thus realizing checking of the locknut. The locknut with the structure is easy to process, and because the locknut has even stress and is easy to control, the assembly process is simple and reliable. The detailed description is as follows: after the locknut is screwed to a specific position, a set screw is wrenched by a specific torque, and then a check screw is screwed down at the tail of the set screw as security. Compared with the existing nuts, the dislocated check spindle locknut overcomes the defects of the existing nuts of high cost, complex assembly process, uneven stress distribution of the nut body, inconvenience in maintenance, and the like. In addition, the assembly accuracy of the locknut disclosed by the invention can be accurately controlled, thus greatly improving the reliability of a system.

Description

Technical field: [0001] The invention relates to wind power plant manufacture. technical background: [0002] At present, wind power generation has developed rapidly in my country, and the installed capacity has shown explosive growth. But the key components still have to rely on imports, and the price is high, causing the cost of wind turbines to remain high. [0003] One of the key components of wind turbines is the main shaft bearing. A large part of the load on the wind wheel needs to be transmitted to the nacelle seat through it, and correct positioning and sufficient lubrication are the prerequisites to ensure its function. The axial fixation of the spindle bearing and its lubricating device is mainly realized by the spindle lock nut (such as figure 1 ). So the main shaft lock nut is also one of the key components of the wind turbine. [0004] A kind of existing locking nut is an opening, a C-shaped structure (such as figure 2 ), after the nut is screwed into th...

Claims

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Application Information

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IPC IPC(8): F16B37/00F16B39/284F16B39/12
Inventor 蔡洪文
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD