US 4,921,394 AGranted

Load handling device

AssigneeEka AB

InventorNorman F. Watson

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Abstract

A load handling device for transferring ISO flat racks, containers or the like, to and from a support comprising two spaced lifting arms (11) pivotally connected adjacent their lower ends (at 9) to said support (13) and hydraulic rams (40,41) for rocking said arms (11) in a vertical arc, and an extension arm (53) pivotally connected to the end of each lifting arm (11) remote from its pivotal connection (9) to the support (13) and further hydraulic rams (55,57) for rocking each extension arm (53) about its pivotal connection to its lifting arm (11) through a vertical arc extending to either side of the longitudinal axis of the lifting arm (11). Preferably, the various hydraulic rams are connected to the lifting and guide arms outboard of the arms, and the extension arms are extendable, and the whole device is fitted to a vehicle chassis, thus enabling flat racks, containers and the like to be transferred between the ground, the vehicle or another vehicle, including a railway wagon, without the railway overhead power lines being hit.

Claims32

Dependent claims

A load handling device mountable on a support for transferring a load, comprising:

two spaced lifting arms;
first pivot means pivotally connecting said lifting arms to said support at or adjacent a lower end of each arm;
an exension arm for each lifting arm;
load engagement means attached to the extension arm;
second pivot means pivotally connecting said extension arm to an end of its respective lifting arm remote from said first pivot means;
first means for rocking each of said two lifting arms in a vertical arc comprising:
two first hydraulic rams;
third pivot means connecting the lower ends of each of said first hydraulic rams to said support about pivot axes parallel to said first pivot means, but laterally spaced to either side thereof;
and
fourth pivot means connecting the upper ends of said first hydraulic rams to an upper end portion of the respective lifting arm;
second means for rocking each extension arm about its pivotal connection to its said lifting arm through a vertical arc extending to either side of the longitudinal axis of said lifting arm comprising:
two second hydraulic rams, one being located on either side of its respective lifting arm;
fifth pivot means connecting an upper end of each second hydraulic ram to an upper region of its extension arm, each said fifth pivot means being located at or on either side of the longitudinal axis of said extension arm;
and
sixth pivot means connecting a lower end of each second hydraulic ram to its respective lifting arm, said sixth pivot means located closer to said first pivot means than is said fourth pivot means.

12 more elements

A load handling device for transferring freight containers, for example to and from a support for the load handling device, said device comprising:

two spaced lifting arms;
first pivot means pivotally connecting each of said lifting arms at or adjacent their lower ends to said support;
an extension arm for each lifting arm;
load engagement means attached to the extension arm;
second pivot means connecting said extension arm to an end of its respective lifting arm remote from said first pivot means;
a first pair of hydraulic rams for rocking each of said lifting arms in a vertical arc;
third pivot means connecting the lower end of each ram of said first pair of hydraulic rams to said support about a pivot axis parallel to said first pivot means, but laterally spaced, one to either side thereof;
fourth pivot means connecting the upper end of each ram of said first pair of hydraulic rams to an upper end portion of the respective ones of said lifting arms;
a second pair of hydraulic rams for rocking each extension arm about its pivotal connection to its said lifting arm through a vertical arc extending to either side of the longitudinal axis of said lifting arm, one ram of said second pair of hydraulic rams being located on each side of its respective lifting arm, and including fifth pivot means connecting an upper end of each ram of said second pair of rams to an upper region of its said extension arm, each said fifth pivot means being located at or on either side of the longitudinal axis of said extension arm;
and a sixth pivot means connecting a lower end of each ram of said second pair of rams to its respective arm;
and
wherein said fourth pivot means for said first pair of rams are located above said sixth pivot means for said second pair of rams.

9 more elements

A load handling device mountable on a support for transferring a load, comprising:

a lifting arm;
first pivot means pivotally connecting said lifting arm to said support at or adjacent a lower end of said arm;
first pivot means pivotally connecting said lifting arm to said support at or adjacent a lower end of said arm;
an extension arm for said lifting arm;
load engagement means attached to the extension arm;
second pivot means pivotally connecting said extension arm to an end of said lifting arm remote from said first pivot means;
first means for rocking said lifting arm in a vertical arc comprising:
two first hydraulic rams;
third pivot means connecting the lower ends of each of said first hydraulic rams to said support about pivot axes parallel to said first pivot means, but laterally spaced to either side thereof;
and
fourth pivot means connecting the upper ends of said first hydraulic rams to an upper end portion of said lifting arm;
second means for rocking said extension arm about its pivotal connection to said lifting arm through a vertical arc extending to either side of the longitudinal axis of said lifting arm comprising:
two second hydraulic rams, one being located on either side of said lifting arm;
fifth pivot means connecting an upper end of each second hydraulic ram to an upper region of said extension arm, each said fifth pivot means being located at or on either side of the longitudinal axis of said extension arm;
and
sixth pivot means connecting a lower end of each second hydraulic ram to said lifting arm, said sixth pivot means located closer to said first pivot means than is said fourth pivot means.

13 more elements

A load handling device for transferring freight containers, for example to and from a support for the load handling device, said device comprising:

a lifting arm;
first pivot means pivotally connecting said lifting arm at of adjacent a lower end to said support;
an extension arm for said lifting arm;
load engagement means attached to the extension arm;
second pivot means connecting said extension arm to an end of said lifting arm remote from said first pivot means;
a first pair of hydraulic rams for rocking said lifting arm in a vertical arc;
third pivot means connecting a lower end of each ram of said first pair of hydraulic rams to said support about a pivot axis parallel to said first pivot means, but laterally spaced, one to either side thereof;
fourth pivot means connecting an upper end of each ram of said first pair of hydraulic rams to an upper end portion of said lifting arm;
a second pair of hydraulic rams for rocking said extension arm about its pivotal connection to said lifting arm through a vertical arc extending to either side of the longitudinal axis of said lifting arm, one ram of said second pair of hydraulic rams being located on each side of said lifting arm, and including fifth means connecting an upper end of each ram of said second pair of rams to an upper region of said extension arm, each said fifth pivot means being located at or on either side of the longitudinal axis of said extension arm;
and a sixth pivot means connecting a lower end of each ram of said second pair of rams to said lifting arm;
and
wherein said fourth pivot means for said first pair of rams are located above said sixth pivot means for said second pair of rams.

9 more elements

Dependencies are inferred from the claim text.