Using the action of gears and chains, when the trolley receives the gravity of the material box, the trolley automatically moves forward, and when the gravity disappears, the trolley automatically returns.
Material box size：500*350*120mm
Weight range：10-30 kg
Trolley travel distance: 1-5 m
1. The material clerk puts the material box full of materials on the trolley, and the trolley moves due to the power generated by gravity.
2. The trolley automatically moves forward to another workbench once receives the box.
3. The trolley stop move when arrive ,the material clerk take out of the box. The trolley loses power, the spring bounces, and the power is generated to make the trolley automatically move back and forth, and the vehicle platform gradually rises.