Automatic shift is one of the main

Automatic shift is one of the main faults of transmission. Due to the lack of wear, transmission stiffness and vibration of meshing teeth, the gear will be automatically detached. In order to solve this problem, in addition to the measures taken technically, the following effective measures have been taken structurally:1. Stagger the joint position of the two joint teeth, as shown in the figure. 2.2a. Thus, when meshing, the end of the meshing tooth is larger than 1-3mm of the meshing tooth. In use, the contact part of the two teeth is squeezed and worn at the same time to form a shoulder at the end of the joint tooth, which can be used to prevent the joint tooth from moving out automatically.2. Thin cut the tooth thickness of the front ring gear on the base of the meshing gear sleeve (cut 0.3-0.6mm) to make the rear end face of the meshing gear sleeve reverse cut from the front end face of the rear ring gear to prevent automatic gear release, as shown in the figure. 2.2 b.3. Design and process the working face of the connecting gear into a bevel to form an inverted cone Angle (generally 2-3°), so as to generate axial force on the connecting gear face and prevent automatic displacement and fall off, as shown in the figure. 2.2c. This scheme is more effective and more widely used. The tooth side of joint teeth is designed and processed into a stepped shape, which also has the effect of preventing automatic displacement and falling off [16].