Four-wheel drive off-road forklifts are used for loading and unloading materials in material distribution centers with poor road conditions such as airports, docks, stations, urban construction sites, pipeline laying, oil field development, mountainous forest areas and other field projects. They have good mobility and off-road performance. They are used for loading and unloading containers in dock cargo yards and for loading and unloading materials by troops during wartime. They are industrial vehicles that can load, unload, stack and carry materials on slopes and uneven ground. As a special forklift, it is similar to ordinary forklifts in appearance, but from the perspective of application, they are two different products and cannot replace each other. The four-wheel drive off-road forklift market is promising. It can be equipped with forks or replaced with a variety of attachments to improve operating efficiency. It has a variety of structural types and has developed rapidly abroad. It is generally composed of four major parts: engine, chassis, working device and electrical equipment.
Structural features:
(1) All-wheel drive with good passability and off-road performance. There is no differential between the axles, and large-diameter wide-base semi-steel tires are used
(2) Articulated frame is used. The swing angle of the frame is generally ±30°~40°. The steering system is simple and requires an ordinary steering drive axle. A small turning radius can be achieved by operating the steering wheel to make the frame swing horizontally, making it easy for the forklift to align with the material.
(3) All-wheel braking. Except for small-tonnage forklifts that use a shoe-type brake structure, most of them are caliper disc brakes, and large-tonnage forklifts also use wet brakes. The parking brake is mainly hand brakes.
(4) Axle The rear axle of an off-road vehicle is fixed to the frame, while the front axle can swing vertically relative to the frame. A supporting hydraulic cylinder is set between the frame and the front axle. When the forklift is lifting, the lifting gantry is kept in a lateral state by operating the hydraulic cylinder; when the vehicle is driving, the upper and lower chambers of the hydraulic cylinder are connected through the damping hole, which improves the vehicle's driving smoothness.
(5) It has a larger wheelbase and track. Increase the lateral and longitudinal stability of the vehicle.
(6) Good maneuverability. The vehicle speed is generally (30~40) km/h. Good driving acceleration and certain climbing ability.
(7) Driver seat setting. The driver seat is generally arranged forward to provide the operator with a better view when loading.
(8) Travel system. Similar to loaders, there are many types of mechanical transmission, hydraulic shift mechanical transmission, hydraulic transmission and hydrostatic transmission. The difference is that the full power matching method is adopted, and its load is full load climbing condition.
The components of four-wheel drive off-road forklifts that do not drag the ground: the ground clearance of four-wheel drive off-road forklifts, off-road tires with high rubber content. Front four-wheel drive. The design between the engine and the gearbox is compact. It can operate in harsh areas such as rugged terrain, sand or mud.
The four-wheel drive off-road forklift adopts a fully hydraulic electronically controlled gearbox, fully hydraulic steering, and pilot work control to make the whole machine flexible and light. The whole machine is equipped with a double-axle six-wheel drive, which has large traction and makes its body stable; the articulated frame has a small turning radius; and is equipped with a Gramo seat.
The performance of the four-wheel drive off-road forklift is suitable for the loading and unloading of materials, palletizing, short-distance transportation and other operations on rough road conditions such as soft soil, grassland, wading, jungle, desert, mountain, mine and other rugged roads. It can also be equipped with tire loading equipment to replace tires of large mining machinery and can also be equipped with special-shaped attachments.
