XGS28 self-propelled Telescopic Mobile Elevating Work Platform developed with Max. working height at 28.2m, max. payload at 340kg, max. gradeability at 45%; this vehicle is structured as three sections of telescopic arms and tower arm mechanism, with a small fly jib, featuring wide work range. Dual payload control system is adopted to adjust the work range depending on the payload, meeting the different loading requirements and thus becoming an ideal selection in the construction of building, bridges, steel structures and stadiums.

［Advantages and features］

• 2.4m wide platform, enough for carrying tools and materials

• The jib is enable to fly over some obstacles and thus to reach the inaccessible position.

• Dual payload control system could adjust the work range by itself according to the payload, meeting the different loading requirements.

• The boom and the upright are luffed and raised at the same time with one single cylinder, speeding up the approaching of work area, making the construction more effective, suitable for the relatively low and narrow site.

• Maintenance-free shaft bushing and slider could ease the friction at each articulated point and slider and better the adaptation to the welding and dusting environments, as well as greatly dropping the fault ratio and the service life of complete vehicle.

• The power system integrates the electronic-control engine, the oil pressure sensor, the coolant temperature sensor, the rpm sensor and other. Safe and reliable ECU is equipped with fault diagnostic port, making the fault diagnosis and maintenance easier.

II. Introduction of Main Parts

1. Chassis part

Main configurations; 4WD, two wheel steering, axle balance, foam tires.

(1) Maximum driving speed at 6.1km/h.

(2) Maximum gradeability at 45%-Max. level in industry

(3) Axle balance system - greatly improving the vehicle ability to cross over any rough road.

(4) The built-in traveling reducer that integrates the motor and reducer is applied and two driving speeds (high speed and low speed) are provided to meet the driving demands of the machine under different environments. The traveling mechanism features self-braking function while traveling on slopes and is equipped with clutch device to ease the towing in event of malfunction.

2. Boom part

(1) 3-section telescoping boom of single telescoping cylinder + wire rope.

(2) Boom material - The boom is welded from high strength steel to realize lightweight and high safety.

(3)Upright + boom luffing and rising simultaneously, making it more productive.

(3) Strength-stiffness matching - It guarantees the outstanding strength and stiffness of the boom.

3. Turntable part

(1) The turntable is capable of 360° continuous rotation and is provided with two holes for installation of transport locking pins.

(2) Power system - The Foton Cummins engine is equipped with optimized shock-absorbing and heat dissipation system.

(3)Spin-out engine mounting is bolted to vehicle frame and could be spined out, make it easy to access to engine and its attachments for maintenance and repair.

4. Platform part

(1) 2.4m×0.9m large work platform.

(2)Three gates on platform, biggest one for worker to get in

(3) 160° rotatable platform.

(3) Up to 340kg carrying capacity.

(4)Electro-hydraulic proportional auto-leveling system could real-time monitor the platform angle, dynamically leveling it.

5. Hydraulic system

(1) Hydraulic parts - The main parts, including hydraulic pump and master valve, adopt international renowned brand products.

(2)Closed pump + variable pump: the former is used to control the running system and the latter to control the complete hydraulic system driven directly with engine, except for the running system;

(3) Installed emergency power unit - It can ensure that the boom can be retracted to the driving status in event of malfunction of engine or oil pump.

(4)Superstructure hydraulic system is of open - type variable system: based on the electric-hydraulic proportional control technologies, the machine could implement the slewing of superstructure, the luffing of boom, the retracting/extending of boom, and the swinging of work platform. The superstructure hydraulic system could keep the platform level in the way of electric-hydraulic proportional control.

(5)The running system is of a closed variable system - 4×4 drive type, classified into high-speed and low-speed gears. The undercarriage hydraulic system could perform the axle balancing, and the steering functions.

(6) Hydraulic system has a hydraulic oil cooler that starts to work when system temperature reaches 60℃ to make sure the vehicle could work for long time.

5. Electric system

(1) PLC control technologies – turntable and platform are respectively mounted with a controller and its box, controlling the undercarriage, the turntable, the boom, the crank and the platform.

(2) Main control items - Engine preheating, start, flameout, and speed control; Engine oil pressure, coolant temperature checking and warning; Chassis steering and driving control; Turntable slewing and boom luffing and telescoping control; Platform slewing control; Platform load checking; Platform leveling.

(3)Multiple safety protection methods - monitoring of engine and startup of protector; vehicle - tilting warning; overloading warning; monitoring of steel wire looseness.