Steering assembly for work vehicles

Abstract

A steering assembly (1) for work vehicles, particularly lift trucks, tractors, trailers and / or the like, comprising a body (4) for coupling to a work vehicle provided with means (5) for rotation about a vertical axis (A) of a wheel hub supporting element (3), motor means (6) of the electric type associated with the coupling body (4) for turning a motor shaft, and rotary motion transmission means (8) interposed between the motor shaft (7) and the supporting element (3).

Description

technical field [0001] The invention relates to a steering assembly for a work vehicle, in particular a forklift, tractor, trailer and / or the like. Background technique [0002] Work vehicles such as forklifts, tractors, and others are known to have three or four wheels with specific steering assemblies that are hydromechanically actuated and designed to turn at a predetermined angle for a predetermined time A hub bearing axle for one or more steerable wheels. [0003] These steering assemblies consist of a box-shaped body which is generally cylindrical and houses a plurality of consecutive arrays of toothed couplings consisting essentially of coaxial and interacting gears Yes, these gears are designed to convert the reciprocating linear motion of one or more pistons produced by the action of pressurized fluid into rotational motion of the hub support shaft. [0004] Also known are steering assemblies consisting of a pinion keyed to the hub bearing shaft and engaged to a r...

AI Technical Summary

Problems solved by technology

[0006] These known types of steering assemblies are also not free from their own drawbacks, including that they have complex structures that are complicated to manufacture and that they often require precise machining during production and the assembly process is labor intensive

[0007] From this point it is emphasized that the significant structural complexity is at least partly due to the presence of the hydraulic circuits supplying the actuating cylinders and the difficulty of dimensioning them precisely with respect to the power delivered by them

[0008] Additionally, conventional steering assemblies do not always ensure precise and responsive steering adjustments during use

[0009] In addition, a problem that cannot be ignored is that the use of hydraulic actuators often causes more or less oily substances to exist on the steering assembly, which is caused by seepage or leakage caused by failure; therefore, the traditional steering assembly Parts are not particularly suitable for applications that require a very clean and sterile environment, such as clean rooms, clinics, hospitals, etc.

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