Structure and characteristics of four-wheel drive off-road forklift truck

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Four-wheel drive off-road forklift truck is a kind of engineering vehicle that can safely load and unload, stack and transfer on sloping and uneven ground. It is the same as a balanced forklift. It can be equipped with forks or replace various accessories to improve work efficiency. Off-road forklifts have a variety of structural types, which are basically divided into articulated and integrated.

Four-wheel drive off-road forklift truck structure features:

1. Four-wheel drive off-road forklift has excellent passability and off-road all-wheel drive. There is no differential speed between the axles, and large-diameter wide-base off-road tires are selected. The minimum ground clearance of the vehicle is more than 300mm, and the departure Angle is more than 30.

2. Select the hinged frame. The swing Angle of the Four-wheel drive off-road forklift frame can generally reach 30 to 40, and the steering system is simple. A smaller turning radius is achieved without the need for an expensive steering axle. Operate the steering wheel so that the frame swings horizontally so that the fork can easily align the material. Small tonnage off-road forklift truck can choose integral frame, single axle drive, drive axle with differential lock.

3. All-wheel brake. In addition to small tonnage forklifts using boot brake structure, most of them are clamp disc brakes, and large tonnage forklifts also use wet brakes. Parking brake is a widely used independent hand brake.

4. For 2t~3t articulated off-road forklifts, front and rear Bridges are common.

5. The rear axle of the Four-wheel drive off-road forklift is fixed on the frame, and the front axle can swing 8 to 12 straight lines relative to the frame. A supporting hydraulic cylinder is arranged between the frame and the front axle. When the forklift lifts, the hydraulic cylinder is operated to keep the lifting door frame in a lateral and vertical state. When the forklift truck is running, the upper and lower cavities of the hydraulic cylinder are connected through the damping holes, which is conducive to improving the riding comfort of the vehicle.

6. It has a large wheelbase and wheel base. Increase the horizontal and vertical stability of the forklift.

7. Excellent mobility. The speed is generally up to (30 ~ 40) km/h, the power factor is above 0.65, the traveling speed is good, and the climbing capacity is 25 ~ 30.

8. The portal frame of the Four-wheel drive off-road forklift has a large Angle. These are necessary for safe operation and driving on uneven ground, generally tilting the first 10 to 15, and tilting after 15.

9. Driver seat setup. In order to ensure that the operator has a good view during loading, the driver's seat is generally placed in the front. For articulated forklifts, they should be placed on the front frame as much as possible and roof protected cabs with FOPS/ROPS should be installed according to different operational requirements.

10. The walking system of Four-wheel drive off-road forklift truck is similar to that of loader, and there are mechanical transmission (Me), hydraulic shift mechanical transmission (HyC), hydraulic transmission (T/C) and hydrostatic transmission (HYD). The difference is that the full power matching mode is selected, and its maximum load is full load climbing condition.

Four-wheel drive off-road forklift trucks can be used in rural construction sites, pipeline laying, oil field development, mountain forest areas, loading and unloading containers in dock yards, loading and unloading military materials with troops in wartime and other outdoor projects.

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