Excavating – Rotary digger
Patent
1993-03-04
1995-04-11
Reese, Randolph A.
Excavating
Rotary digger
37403, 37411, 414718, 299 67, 299 89, 404117, 404128, 175327, 172247, 172250, E02F 376, E02F 336
Patent
active
054046602
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a mechanism for supporting an earthworking tool (such as a bucket loader or a rotary cutting head) from a vehicle (such as a tractor or track-laying vehicle).
Existing vehicles, known as "front end-loaders", which may be wheeled or track-laying, are provided with a fixed arm, having vertical movement, which carries a bucket, the bucket being provided with rotary movement for tipping.
It would clearly be advantageous if such a vehicle could be adapted for multiple uses, by having an ability to mount a plurality of tool types for different earthworking operations either above ground (such as trenching, floor/road planing, bankside excavation, spoil loading/tipping) or underground operations (such as the driving of civil engineering tunnels or of mine roadways), with minimum downtime for tool changing operations.
A basic object of the present invention is to provide a mechanism for supporting on a front end-loader an earthworking tool exhibiting improved characteristics over prior art proposals.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a mechanism for supporting an earthworking tool from a vehicle such as a front end-loader, comprising; readily releasable manner, about a generally upright, slewing axis, to a conventionally-provided elevating linkage mechanism of a vehicle; structure about its slewing axis; forwardly directed axis on the primary support structure; structure, with respect to the primary support structure; structure; and support structure.
The power means to effect slewing may consist of a double acting hydraulic ram, or a pair of single acting rams, while the power means to effect rotation of the secondary support structure with respect to the first may comprise an hydraulically powered linear actuator.
The tool support means may be provided with means to readily attach various equipment to the mechanism such as, in one instance, a detachable, drum or disc carrying cutter-picks for cutting or extracting material.
Power means may also be provided to pivot the secondary support structure with respect to the primary support structure about a generally horizontal axis, said power means may consist of a double acting hydraulic ram, or a pair of single acting rams.
Lugs may be provided on the secondary support structure to engage corresponding lugs on a bucket so that the bucket may be picked up by utilising the movements of the mechanism thus eliminating the need to lift and bolt the bucket in place.
Other types of tools which may be attached to the secondary support structure include a bore hole drilling unit or a hydraulic hammer.
According to a second aspect of the present invention there is provided a vehicle provided with the mechanism of the first aspect.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described, by way of example, with reference to the accompanying drawings in which:
FIG. 1 is a side elevation of the mechanism supported on a front end-loader and carrying a cutter drum;
FIG. 2 is a plan of the mechanism and front end-loader of FIG. 1;
FIG. 3 is a front view of the mechanism and front end-loader of FIG. 1;
FIG. 4 corresponds to FIG. 2 but shows the mechanism slewed about its slewing axis;
FIG. 5 corresponds to FIG. 1 but shows the various degrees of lift, tilt and rotation of the mechanism;
FIG. 6 corresponds to FIG. 1 but shows the mechanism adjusted for floor planing;
FIG. 7 corresponds to FIG. 1 but shows the mechanism adjusted for cutting below ground level;
FIG. 8 corresonds to FIG. 1 but shows the mechanism adjusted for bankside excavation;
FIG. 9 corresponds to FIG. 1 but shows the mechanism adjusted for tunnelling;
FIG. 10 corresonds to FIG. 1 but shows the mechanism adjusted for tunnel profiling;
FIGS. 11 to 13 correspond to FIG. 1 but show the mechanism variously adjusted for trenching;
FIG. 14 is a side elevation of a bucket for use with the mechanism;
FIG. 15 is a rear elevation of the bucket of FIG. 14;
FIG. 16 corresponds to FIG. 1 but sh
REFERENCES:
patent: 4355477 (1982-10-01), Holmgren et al.
patent: 4602821 (1986-07-01), Schaeff
patent: 4825567 (1989-05-01), Andiano et al.
patent: 4942682 (1990-07-01), McDowell
patent: 4962597 (1990-10-01), Kutra et al.
patent: 5244306 (1993-09-01), Artzberger
Pezzuto Robert
Reese Randolph A.
Webster Equipment Limited
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