Off-road type forklift with hydrostatic four-wheel drive and articulated frame

Abstract

The invention relates to an off-road type forklift with hydrostatic four-wheel drive and an articulated frame. The forklift comprises a front forklift body and a rear forklift body, which are connected through an articulation mechanism and a steering cylinder, wherein two wheels are respectively arranged on the front forklift body and the rear forklift body; each wheel is arranged at the output end of one hydraulic motor; a drive cabin is arranged on the front forklift body; a lifting mechanism is connected at the front side of the front forklift body; an engine is arranged on the rear forklift body; a transfer case is connected at the flying wheel end of the engine; three oil pumps, namely a variable pump, a first constant pump and a second constant pump are connected at the output end of the transfer case; the variable pump is connected with four hydraulic motors; the first constant pump is connected with the lifting mechanism; and the second constant pump is connected with a steering system. According to the forklift, the articulated frame and the hydrostatic four-wheel drive are adopted, the wheels can be ensured to be fully grounded, and the maximal wheel side thrust of the hydraulic motors is brought into play; and the off-road performance of the forklift is good, so that the application range of the forklift is greatly expanded.

Description

technical field [0001] The invention relates to a forklift, in particular to a hydrostatic four-wheel drive articulated frame off-road forklift. Background technique [0002] At present, the transmission layout of general-purpose forklifts is front-wheel drive and rear-wheel steering, and an integral frame and a low ground clearance are used. The front axle has a differential, but no elastic suspension; if one side of the wheel hangs in the air, the front wheel will lose power completely. Most of the rear wheels are installed on a swing frame with a swing amount of about 8°, and there is no elastic suspension. Therefore, its calibration working condition is that it can only work on a flat and hard road, which greatly limits the scope of use of the forklift. [0003] From the point of view of domestic use requirements: for construction sites with a wide range of roads, bridges, water conservancy, and factory buildings, the lifting and loading tasks can only be undertaken by...

AI Technical Summary

Problems solved by technology

Therefore, its calibrated working condition is that it can only work on a flat and hard road, which greatly limits the scope of use of the forklift.

[0003] From the point of view of domestic use requirements: for construction sites with a wide range of roads, bridges, water conservancy, and factory buildings, the lifting and loading tasks can only be undertaken by tower cranes and truck cranes, but for wider range of activities and stronger mobility The forklifts in the construction site were unable to do anything because of the potholes and muddy and soft roads

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