Fixed connection structure between gear and gear shaft

Abstract

The invention discloses a fixed connection structure between a gear and a gear shaft. The fixed connection structure comprises the gear, the gear shaft and a fastening screw, and is characterized in that the gear comprises a D-shaped shaft hole and a fixing hole; the fixing hole is penetrated from the space between two adjacent teeth of the gear to a plane part of the D-shaped shaft hole in the radial direction in the gear; the gear shaft is D-shaped; and a fixing hole part is formed in the length direction of the plane part of a D-shaped gear shaft. By a D-shaped structure, the gear is connected with the gear shaft in an anti-rotation mode; the gear can be reliably and fixedly connected with the gear shaft by arranging the fixed connection structure between two teeth of the gear; the additional size of the gear is not increased, and a tooth-shaped structure cannot be damaged; and the fixed connection structure is simple, reliable, low in cost, easy to realize and convenient to mount.

Description

technical field [0001] The invention relates to a fixed connection structure of a gear and a gear shaft, in particular to a fixed connection structure of a gear and a gear shaft suitable for gears with limited thickness. Background technique [0002] The traditional fixed connection between the gear and the gear shaft includes: 1. The gear and the gear shaft are fixed by welding, but in the process of use, the welding is prone to loosening, which will cause the fixation to fail, which will easily cause the abnormality of the gear transmission, and even Damaged gears; 2, such as figure 1 As shown, the position of the set screw is reserved on the gear, and the gear and the gear shaft are fixed by the set screw. This device needs to design an extra, larger thickness for the gear, and the structure is not compact enough; 3. figure 2 As shown, another way is to reserve the position of the set screw on the tooth profile of the gear, and the gear and the gear shaft are fixed by t...

AI Technical Summary

Problems solved by technology

[0002] The traditional fixed connection between the gear and the gear shaft includes: 1. The gear and the gear shaft are fixed by welding, but in the process of use, the welding is prone to loosening, which will cause the fixation to fail, which will easily cause the abnormality of the gear transmission, and even Damaged gears; 2, such as figure 1 As shown, the position of the set screw is reserved on the gear, and the gear and the gear shaft are fixed by the set screw. This device needs to design an extra, larger thickness for the gear, and the structure is not compact enough; 3. figure 2 As shown, another way is to reserve the position of the set screw on the tooth profile of the gear, and the gear and the gear shaft are fixed by the set screw. This design destroys the structure of the tooth profile, resulting in insufficient tooth profile strength. During use, the tooth shape is prone to breakage and damage the gear, resulting in abnormal transmission of the gear, or even damage to the transmission failure

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