Blade and shaft connecting structure convenient for dismounting and manufacturing method thereof

A shaft connection and blade technology, applied in grain processing, etc., can solve problems such as abnormal vibration and noise, high maintenance cost, thermal deformation of the shaft, etc., and achieve the effects of reducing vibration, easy maintenance and replacement, and easy assembly and disassembly

Inactive Publication Date: 2012-05-09
中国机械总院集团云南分院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the problem of firm connection, but if a blade is damaged, it can only be cut off with oxygen, and then replaced with a new blade. Not only the maintenance and replacement parts remain unchanged, but the maintenance cost is high, and the welding process produces The heat will also cause thermal deformation of the shaft, and every time the blade is replaced, the shaft will also be thermally deformed, which cannot guarantee the original accuracy, resulting in abnormal vibration and noise during operation

Method used

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  • Blade and shaft connecting structure convenient for dismounting and manufacturing method thereof
  • Blade and shaft connecting structure convenient for dismounting and manufacturing method thereof
  • Blade and shaft connecting structure convenient for dismounting and manufacturing method thereof

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Embodiment Construction

[0018] Such as figure 2 , image 3 As shown, the present invention includes a shaft 1 and a blade 2 mounted on the shaft, and each blade is made into two halves that are clamped on the shaft and connected with the shaft, and a semicircle that fits with the shaft is processed in the middle of the bottom end of each half blade Bottom notch 2a, lugs 2b with mounting holes processed on both sides of the bottom end of the blade, a bayonet is processed on the shaft 1 on which the blade is installed, and the two halves of the blade are spliced ​​and snapped into the bayonet of the shaft and connected to each other through the connecting screw 3 coupling.

[0019] The method of making a blade-shaft connection structure that is easy to disassemble is as follows:

[0020] After machining the shaft 1, mill out the bayonet for installing the blade 2, and finish machining each bayonet surface 1a to the required size, and the bayonet width tolerance is H9;

[0021] ② if Figure 4 Mak...

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Abstract

A blade and shaft connecting structure convenient for dismounting and a manufacturing method thereof. The method comprises the following steps: first machining a shaft (1), milling bayonets for installation blades and carrying out finish machining on each bayonet surface (1a) to a required dimension; then manufacturing integral blades (2), machining a center aperture capable of assembling with the shaft (1) in the center of each blade, manufacturing ears at two sides of a middle part of each blade and machining installing holes on the ears; after manufacturing of the integral blade, cutting the integral blade into two halves transversely along the center, wherein each half blade, at center of the bottom, is provided with processed semicircle bottom recess (2a) capable of assembling with the shaft (1), and two sides of blade bottom are provided with ears (2b) processed with installing holes; splicing the two half blades and clamping in bayonets of the shaft and connecting the blades by coupling screws (3). The connecting structure of the invention can realize reliable connection of the blades and the shaft, is convenient for maintenance, dismounting and replacing, and can avoid shaft deformation and reduce vibration and noise during operation.

Description

technical field [0001] The invention relates to the technical field of connection between a blade and a shaft or between a blade and a shaft in a mechanical device. Background technique [0002] For a long time, the connection between blades and shafts or blades and shafts in pulverizers, ball mills and other equipment has been used such as figure 1 In the welding connection method shown, the blade B is put on the shaft A through the center hole in the middle of the blade, and then the blade and the shaft are welded together, so that the blade or the blade is firmly connected with the shaft. This method solves the problem of firm connection, but if a blade is damaged, it can only be cut off with oxygen, and then replaced with a new blade. Not only the maintenance and replacement parts remain unchanged, but the maintenance cost is high, and the welding process produces The heat will also cause thermal deformation of the shaft, and each replacement of the blades will also cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/18B02C18/16B02C18/18
Inventor 秦忠施庆华吴学云高健韩玉稳董跃姜贵中万永丽尹正忠高发荣王昆张建兵
Owner 中国机械总院集团云南分院有限公司
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