1 Easy to elevate head by geared crank handle.

2 Easy to elevate knee by geared crank handle.

3 The crank handle is removable.

4 Crank handle for safely and easily opening or closing hopper.

5 The crank handle is rotated to lead a screw to rotate through an umbrella wheel.

6 The crank handle is designed as detachable to minimise the dimension of the actuator.

7 After crank handle, the electromotion should not work because of the switch effect.

8 After unloading the crank handle, the electromotion should not work because of the switch effect.

9 Strong, champagne color powder coated , aluminum frame with convenient crank handle.