Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1990-01-26
1993-04-06
Huppert, Michael S.
Material or article handling
Vertically swinging load support
Shovel or fork type
180 8912, E02F 328
Patent
active
051998610
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a lifting truck of the type comprising a wheeled structure carrying a telescopic lifting arm articulated to the rear of the structure about a horizontal axis perpendicular to the longitudinal axis of the truck, an internal combustion engine supported by the structure for the propulsion of the truck and for the operation of the arm, and a driving and operating cab situated on one side of the structure to one side of the longitudinal axis of the structure.
Lifting trucks of the aforementioned type generally have the disadvantage that they do not provide sufficient visibility to the side and to the rear for the operator working in the operating and driving cab. In fact, in lifting trucks currently available on the market, the lifting arm is articulated on an axis which is perpendicular to the longitudinal axis of the vehicle to the upper end of an upright which extends vertically above a rear housing of the structure in which the internal combustion engine is housed. The lifting arm thus obstructs in its completely lowered position, the operator's view to the side, and to the rear, which poses problems, particularly as regards working safety.
The particular object of the present invention is to produce a lifting truck of the type defined above which is formed in such a way as to improve the operator's field of view.
SUMMARY OF THE INVENTION
According to the invention, this object is achieved by virtue of the fact that the internal combustion engine is disposed in a housing which is situated on the opposite side of the longitudinal axis to the cab and is spaced from the cab so as to define with the cab a space having a width at least equal to the width of the lifting arm, and by virtue of the fact that the lifting arm is articulated to the structure of the truck in such a position that, in its completely lowered position, it is partly accommodated in the space so as not to interfere with the view of the operator working in the driving cab.
Further characteristics and advantages of the truck according to the invention will become clear in the course of the detailed description which follows with reference to the appended drawings, provided by way of non-limiting example, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of a fork-lift truck;
FIG. 2 is a front elevational view of the truck of FIG. 1,
FIG. 3 is a view of the truck of FIG. 1 from above,
FIG. 4 is a view similar to FIG. 1 of a variant, and
FIG. 5 is a perspective view of the vehicle shown in FIG. 4.
DETAILED DESCRIPTION OF THE INVENTION
With reference to FIGS. 1 to 3, a lifting truck, generally indicated 2, includes a support platform structure 4 provided with front and rear wheels 6 and 8 respectively, and with a telescopic lifting arm 22, articulated to the rear end of an upright 18 carried by the structure 4. The platform 4 supports a driving cab 10 situated on one side of the platform 4 and to one side of the longitudinal axis A--A of the truck.
On the opposite side of the axis A--A to the driving cab, the platform supports a housing 12 in which a longitudinally-extending internal combustion engine 16, provided with a vertically-directed exhaust pipe 20, is housed. The housing 12 is positioned at a distance from the cab 10 so as to define with the cab a space 14 which is at least as wide as the lifting arm 22.
The lifting arm 22 is articulated about a horizontal pin 22a transverse the axis A--A and situated at a level such that the arm is partly accomodated in the space 14 in its completely lowered position. In FIG. 1, the telescopic arm 22 is illustrated in its completely retracted position, being shown in broken outline in a partially raised position, and in continuous outline in its completely lowered position in which it extends longitudinally adjacent the cab 10 in the space 14 and does not interfere with the view of the operator working in the driving cab. In particular, the top of the engine housing 12, the axis of the articulation pin 22a
REFERENCES:
patent: Re30021 (1979-06-01), Olson
patent: 2591584 (1952-04-01), Moon
patent: 3967744 (1976-07-01), Goyarts
patent: 4210219 (1980-07-01), Oswald et al.
patent: 4345873 (1982-08-01), Wymore
patent: 4382743 (1983-05-01), Newell
Galfre' Renato
Merlo Amilcare
Huppert Michael S.
Merlo S.p.A. Industria Metalmeccanica
Underwood Donald W.
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