GTJZ is consist of mechanical structure, hydraulic system, electric system and working device.
1）Structure GTJZ mechanical structure is consist of platform base 、 scissor arms、working hydraulic motor、driving motor、working platform and extend platform. Platform base is welded by strength steel plate. The platform can be operated both up-stair and downstair，it has guardrail，Safe and reliable operation.
2）Hydraulic principle Lifting principle：Hydraulic oil from gear pump has certain pressure, go through oil filter, Flameproof electromagnetic directional valve, throttle valve, hydraulic control one-way valve, balance valve. Then enter into the bottom of hydraulic cylinder, to make the piston go up, so as to push the scissor arms open and close to lift the platform. The speed of hydraulic cylinder working is controlled by DC motor controller which controls the Pump flow. During lifting cargo, the oil will return to oil container through Flameproof electromagnetic directional valve from upper end of cylinder, its rated pressure is adjusted by overflow valve. During Cylinder piston downward movement(decline cargo),hydraulic oil
3）Electrical principle Electrical system is mainly controlled by ECU module, which has control joystick and other Switch to control the hydraulic valve to operate all sorts of functions by the electromagnetic valve.(More details please check electric diagram)
4）Driving system Hydraulic oil from gear pump has certain pressure, go through oil filter, Flameproof electromagnetic directional valve, throttle valve, hydraulic control one-way valve, balance valve. Then ECU module and joystick control the reversing valves to make turns and move.
