A lifting system of a reach-type forklift realizing high lift

Abstract

The invention relates to a hoisting system capable of implementing high hoisting of a reach truck. The hoisting system comprises a three-stage hoisting gantry, a side shifter, a front hoisting oil cylinder, two rear hoisting oil cylinders and a hydraulic pipeline system, wherein the three-stage hoisting gantry comprises an outer gantry, an intermediate gantry and an inner gantry; the width A of the outer gantry is 730 mm; the total width B of three gate posts on one side of the width direction after assembling of the three-stage hoisting gantry is 149 mm, and the total thickness C is not greater than 175 mm; the gantry structure is high in strength, can implement high hoisting of 12.5 m, is provided with the side shifter with the inclining and side shifting dual functions to implement separate inclination of the cargo while the gantry is vertical; the radial direction of a front cylinder chain wheel at the top of the front hoisting oil cylinder is inclined with the plane of the three-stage hoisting gantry; four rubber tubes at the cylinder head are crossly arranged with the front cylinder chain; the four rubber tubes are forward lapped with the front hoisting oil cylinder to form a wider space in the inner gantry above the front hoisting oil cylinder, so as to maximally enlarge the view field of a driver.

Description

technical field [0001] The invention belongs to the technical field of forklifts, and in particular relates to a lifting system of a reach-type forklift. Background technique [0002] As an important storage vehicle, reach trucks are widely used in tobacco, food, textile, electronics and other industries; they are especially suitable for operations in narrow lanes and narrow elevated warehouses. At present, the requirements for reach trucks in the market mainly focus on three points: 1. Good vision, that is, the operator can observe the relative position of goods and shelves when sitting on the driver's seat when using the reach truck for stacking; 2. 1. Realize high lifting, that is, stacking on high shelves above 10m, and require the maximum lifting height to increase at the same time, the carrying capacity of the forklift is reduced very little; 3. High stability, that is, the goods are stacked forward on high shelves When leaning backward, the whole vehicle shakes littl...

AI Technical Summary

Problems solved by technology

[0003] At present, the channel steel of the mast frame of the three-stage full-free lifting system of the reach forklift is staggered front and back or arranged side by side, and the total longitudinal thickness C of the mast frame is greater than 210mm, so that the load-carrying distance of the goods is forward, so that the lifting capacity is low; The overall width B is greater than 169mm, and the overall width A of the outer mast is not greater than 690mm. In addition, the layout of the hydraulic pipelines does not overlap, so that the space in the middle of the mast is small and the vision is poor; and the three-stage lifting system is mostly in the form of mast tilting. , that is, the goods and the mast are tilted forward and backward together, the total weight of the tilt is large, and the vehicle shakes are also large, and the tilting cylinder is installed at the lower end of the outer mast, and the force of the tilting cylinder is large

[0004] On the other hand, at present, most of the side shifters equipped with the mast of domestic reach trucks have a single side shift function, which cannot realize the tilting function, and the operation is not flexible, which greatly affects the use efficiency of reach trucks

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