US 4,067,245 AGranted

Lever transmission particularly for lifting means

AssigneeKarl Mengele & Sohne

InventorsBlaz Santic, Otto Volz

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Abstract

In a lifting and tipping mechanism a lever drive unit includes two pairs of scissors arms with each pair pivotally mounted on an oppositely disposed leg of a U-shaped undercarriage, a swing mechanism is provided for guiding the movement of the scissors arms from a folded position on the undercarriage to an extended lifting and tipping position upwardly from the undercarriage. The swing mechanism consists of an elongated sliding guide in which a guide member, fixed to one end of one of the scissors arm of each pair is slidably displaced by a hydraulic linear motor. The sliding guide has a first part which extends parallel to the legs of the undercarriage in the folded position of the scissors arms and a second part which extends angularly upwardly from the first part. As the scissors arms open from the folded position, the guide member moves from the first part into the second part. The sliding guide can be formed in a single member or it can be made up of two separate members.

A lever drive lifting unit comprising an undercarriage having a pair of laterally spaced legs each having a first end and a second end and a transverse spar interconnecting the first ends of said legs, two pair of pivotally connected scissors arms with one pair of said scissors arms mounted on and extending along each of said legs, each said pair of scissors arms comprising a first scissors arm and a second scissors arm each having a first end and a second end with said first and second scissors arms being pivoted together intermediate the first and second ends thereof, in each said pair of scissors arms said first scissors arm and second scissors arm are displaceable from a folded position resting on the associated said leg of said undercarriage to a plurality of lifting positions with said first and second scissors arms being pivotally displaced upwardly from the folded position, means for pivotally displacing said arms upwardly from the folded position on said undercarriage, said first ends of said first and second arms being located adjacent the first end of the associated said leg of said undercarriage and said second ends being located adjacent the second ends of the associated said leg of said undercarriage when said scissors arms are in the folded position, a supporting frame for receiving alternating loads supported by at least said first scissors arms, at least one swing mechanism mounted on said undercarriage adjacent the transverse spar end thereof, said swing mechanism having an elongated sliding guide formed therein, a guide mmber on each said first scissors arm adjacent the first end thereof and slidably positionable within said sliding guide, said means for pivotally displacing said scissors arms comprising a first telescopically extendable member for effecting the displacement of said guide member within said sliding guide as said pairs of scissors arms are moved from the folded position to the lifting positions for thereby lifting said supporting frame, and a second telescopically extendable member for pivotally displacing said supporting frame relative to said first scissors arms.

Facts

Application

05/600,069Filed 29 Jul 1975

Priority

DT 243856610 Aug 1974

Granted

10 Jan 1978

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16H 21/44
All movement being in, or parallel to, a single plane: for conveying or interconverting oscillating or reciprocating motions
B60P 1/30
With a tipping movement of load-transporting element: in combination with another movement of the element
B60P 1/34
In combination with another movement of the element: the other movement being raising or lowering
B60P 1/48
Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading: using pivoted arms…

Abstract

Claims17