What is the reason why the cart is out of gear at high speed?

Hello, the main reasons for the change are:

1. The gear linkage mechanism is out of balance and has not hung to the end; It can be adjusted and solved.

2. The meshing teeth on the inertia lock ring or synchronizer cone ring and the internal meshing teeth on the sliding sleeve are worn for a long time to form a cone shape, so that axial thrust is generated on the meshing teeth. When this thrust is greater than the locking force of the gear spring, the gear will be disengaged.

3. The reverse gear locking mechanism in the gearbox is worn and cannot effectively lock the reverse gear.

4. The gear shifting mechanism in the joystick is not properly adjusted, resulting in the gear shifting is not in place and the meshing teeth are in a semi-meshing state.

5. The locking force of the gear spring becomes soft or broken, and the self-locking steel ball comes out or is damaged.

6. The sliding teeth or gear seat of the gear shifting mechanism and the internal and external meshing teeth of the gear sleeve are tapered due to wear.

When the driving state of the vehicle changes, such as during the transition from free driving mode to driving mode, sudden deceleration, climbing and bumping the road surface, the phenomenon of gear shift often occurs. The following is an analysis of vehicle detachment during the transition from free-running mode to driving mode. When the vehicle is in running mode, the output torque of the engine acts on the meshing teeth, and the meshing teeth rotate and mesh with the reverse cone on the other side, so that the reverse cone is locked.

During the rotation of the coupling teeth, the inverted cone will have a separation stage, during which the inverted cone cannot play a locking role. At this time, if an external force FE opposite to the gear direction acts on the gear sleeve, the gear sleeve may come out and shift.