The internal structure of the double column elevator, we give you a brief introduction. Open the front door, you can see a row of relays on the top right of the control board, in which the time relay controls the takeoff and landing, the left relay controls the large scissors, the middle relay controls the small scissors, and the right relay controls the descent.

1, spiral pair -- bevel gear -- long shaft -- bevel gear -- spiral pair mechanical transmission structure.

(1) Rigid connection, good synchronization,

(2) The structure is complex, although the long shaft can be replaced by seamless steel pipe and short shaft head welding method, the self-weight is still large.

2, choose two motors with similar external rotation, and adjust the two screw pairs selected during assembly with similar processing accuracy, respectively drive the transmission structure.

3, the design of the chain transmission structure:

(1) Reliable synchronization, simple structure, small weight, safe and reliable structure, high transmission efficiency.

(2) A tensioning device for chain drive with convenient adjustment is required.

Open the back cover of the control box, you can see that there are two knobs below the motor, the left knob controls the lowering speed of the lift, and the right knob controls the lifting pressure of the lift. Open the front cover of the control box, you can see that there are two solenoid valves and a handle valve next to the motor, each solenoid valve has two interfaces, the role of the interface is to feed oil; The front solenoid valve is the female solenoid valve, which controls the main lift; The rear solenoid valve is a sub-solenoid valve, which controls the secondary lifting; The function of the handle valve is to replenish oil.

Double column lift