Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1984-01-03
1985-10-08
Crowder, Clifford D.
Material or article handling
Vertically swinging load support
Shovel or fork type
371175, 37DIG3, 414607, 414912, B66F 916
Patent
active
045457212
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a device at a bucket, for example a so-called gravel bucket or corresponding one, intended to be attached to a tractor or corresponding vehicle, comprising preferably two lifting arms capable to carry said bucket, where preferably hydraulic means are provided for controlling said lifting arms and said bucket, so that the bucket can be lifted up and lowered in a substantially vertical plane and be tipped.
Buckets of this kind carried on tractors and corresponding vehicles are used for excavating and transporting, for example gravel etc. Certain applications, however, for which the carrying vehicle, the tractor, per se would be suitable, cannot be carried out with a bucket. This applies, for example, to the lifting and transport of pallets and to the lifting and transport of cement pipes or the like. In such cases, fork trucks are used instead. It is, of course, possible to remove the bucket and exchange it for a lifting fork or the like, which requires normally tedious and stressing manual work.
The present invention relates to a combined excavating bucket and lifting fork, whereby a substantially higher flexibility in respect of the application range of the device is obtained. The device can be adjusted automatically for changing the field of application, i.e. for applying the bucket or the fork.
The present invention, thus, relates to a device at a bucket, for example a so-called gravel bucket or transport bucket, which bucket is intended to be attached to a tractor or corresponding vehicle and is carried by preferably two lifting arms extending in parallel with each other, and where preferably hydraulic means are provided for controlling said lifting arms and said bucket, so that the bucket can be lifted up and lowered in a substantially vertical plane and be tipped.
The device according to the invention is especially characterized in that a lifting fork or corresponding member is provided and intended to be carried by said lifting arms or corresponding members, which lifting fork is pivotal by preferably hydraulic means, so that the arms or corresponding members of the fork can be pivoted in planes substantially perpendicular to the width direction of the bucket, which lifting fork is located substantially beneath said bucket, and that the bucket or parts thereof are capable, preferably by hydraulic means, to be folded to and from the fork between a first and a second position, whereby the bucket, preferably resting on the fork, or the fork can be utilized.
The invention is described in greater detail below with reference to an embodiment and to the accompanying drawings, in which:
FIG. 1 schematically shows an embodiment of a device according to the invention seen from the side, i.e. perpendicularly to the vertical plane, in which the bucket can be lifted and lowered, and in a section A--A according to FIG. 2,
FIG. 2 schematically shows the device according to FIG. 1 seen from above in FIG. 1,
FIG. 3 shows a detail of another embodiment where separate control means for the bucket are provided,
FIG. 4 schematically shows a preferred embodiment of a combined bucket and lifting fork according to the invention, seen in the width direction of the bucket,
FIG. 5 shows an enlarged forward portion of the bucket according to FIG. 4, seen as in FIG. 4,
FIG. 6 shows an enlarged view of the fork arms and a back portion of the bucket according to FIG. 4, seen as in FIG. 4,
FIG. 7 shows half the arrangement of back portion and arms according to FIG. 4, seen from above in FIG. 6, and
FIG. 8 schematically shows a snow bucket intended to be attached to an arrangement of back portion and arms according to the invention.
In FIG. 1 a bucket, for example a so-called gravel bucket or transport bucket, is designated by 1, which bucket in known manner comprises a bottom 2, end walls 3, a rear wall 4 and an opening 5. The bucket 1 is intended to be attached to a vehicle (not shown), for example a tractor, and to be carried by preferably two lifting arms 6 extending in parallel with each other and capa
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