Product Description

1. Lower Vehicle Assembly
The frame assembly is comprised by frame, running mechanism, and steering mechanism.
Pouring tyres are standard configuration. Off road solid tyres are optional.
The running is driven hydraulically with two- or four-wheel driven (standard) modes. The concealed running reducer integrating with motor and reducer is selected. It is provided with fast mode and slow mode to meet running requirements under different circumstances. For running on the ramp, the running mechanism is provided with self-braking function and a clutch device to facilitate towing in case of failure.
The steering axle is floating axle hinged to the frame. The axle balance system is the standard configuration with cylinders set on both sides. The double balanced cylinders float as the road condition may vary to make four wheels contact the ground at the same time providing sufficient driving force.
The steering mechanism is of two steering cylinders plus a pull rod.
2. Boom Assembly
The up vehicle boom assembly is comprised with folding boom, telescopic boom, and a crank boom (only on GTBZ*4J).
The folding boom is of dual parallelogram structure. Two sets of boom are driven by pull rods and move simultaneously through the luffing cylinder; two telescopic booms have single cylinder; the crank boom is of parallelogram structure driven by the crank boom cylinders.
3. Rotary Table
The rotary table is arranged by single board reinforcement with high hinge point. The counterweight is placed at rear side. From the view of counterweight direction, the fuel tank, hydraulic oil tank, battery container, and control cabinet is placed at the left side of the rotary table while the motor is placed at the right side.
4. Hydraulic System
The hydraulic system is driven by duplex pump connected by a variable displacement piston pump and a metering pump. The hydraulic system is powered by direct driving of the motor.
The up vehicle hydraulic system is the open quantitative system with electro-hydraulic proportional control technique, providing upper swing, luffing of No. 1 and 2 Arms, telescoping of No. 2 Arm, and working platform swing. The upper main valve is the electro-hydraulic proportional valve.
The lower running is the close variable system deploying two driving types: 4*2 and 4*4 (standard configuration). The running has high speed and low speed mode. The lower hydraulic system is able to achieve the axle balance. The controlling oil channel is from the running system.
5. Electrical System
The electrical system has PLC control technique with the controller set on the platform. The rotary table and the platform are set with control box to control the chassis, rotary table, boom, and platform.
Main functions achieved by electric system: starting, flameout, and rotating speed control of the motor; chassis rotation and running control; turning control of rotary table; turning control of platform, and loading detection.
Safety measures achieved: motor oil level, oil pressure, temperature monitoring and alarming device; vehicle inclination alarming device; foot switch device; high speed running limit device.