Earth working – Mounting for pushed tool at end of motor vehicle – Transversely mounted blade
Patent
1996-02-12
1998-03-24
Melius, Terry Lee
Earth working
Mounting for pushed tool at end of motor vehicle
Transversely mounted blade
172834, E02F 312
Patent
active
057302294
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a apparatus for coaction with machines or the like to equalize the effect of irregularities in a base or ground surface.
2. Description of the Prion Art
SE-B-459017 discloses an auxiliary tool for wheel-mounted loaders and like machines. The auxiliary tool (39) includes a frame (2) which can be detachably connected to the machine and which carries a tool or implement (3), for instance a planing or grading tool. A transverse bogie-beam (23) is fitted to the frame (2), said bogie-beam carrying at least one pivot wheel (21). The auxiliary tool (39) is also a control-independent unit.
One serious drawback with the auxiliary tool disclosed in SE-B-459017 and also with conventional road graders is that as a result of the construction of present day tools, any irregularity in the ground surface will be transmitted essentially to the planing tool, which means that a large part of the irregularity will remain in the ground surface subsequent to planing said surface, unless the machine operator is very skillful. If the machine operator is highly skilled, she/he will be able to compensate for surface irregularities, by manoeuvering the planing tool with the aid of different hydraulic piston-cylinder devices which influence the planing tool settings. Since it is necessary for the machine operator to constantly finely manoeuver the planing tool, it takes a relatively long time to achieve a satisfactory result
SUMMARY OF THE INVENTION
The aforesaid problems are solved with an apparatus intended for coaction with such machines as wheel-mounted loaders, road planing machines or the like to equalize the effect of irregularities in a ground surface in accordance with the features set forth in the characterizing clause of claim 1. The ability of the apparatus to equalize the effect of irregularities in ground surfaces is achieved by virtue of the fact that the apparatus includes a bogie-means which is arranged at the front end of the frame, parallel with said frame, and which includes two pivot wheels, and further includes a link device which is pivotally mounted between the frame and an intermediate unit connected to the planing tool.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in more detail with reference to an exemplifying embodiment thereof and also with reference to the accompanying drawings, in which
FIG. 1 is a side view of a machine equipped with an apparatus constructed in accordance with the invention;
FIG. 2 is a side view which illustrates the construction of the planer yoke in larger scale, said yoke forming part of the inventive apparatus;
FIG. 3 is a side view of the apparatus according to FIG. 1 and is intended to explain the ability of the apparatus to equalize the effect of ground-surface irregularities;
FIG. 4 is a view from above of the apparatus according to FIG. 1;
FIGS. 5 A and B are views from above of part-of-the inventive apparatus and are intended to illustrate lateral displacement of the planing tool;
FIGS. 6 A and B are views from above of part of the inventive apparatus and are intended to illustrate oscillatory movement of the planing tool in a flat position; and
FIG. 7 is a side view of the inventive apparatus in the transport position.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 is a side view of a machine 10, such as a wheel-mounted loader to which an inventive apparatus 12 is coupled. The apparatus 12 includes a frame 14 which can be coupled removably to the machine 10 and which extends rearwardly from the machine 10 in its normal direction of movement, and further includes a planing or grading tool 16. Mounted on the front end of the frame 14 is a bogie-assembly 18 which can be adjusted between two positions, i.e. a working position (18', c.f. FIG. 4) and a transport position (18", c.f. FIGS. 4 and 7). The bogie-assembly 18 comprises a bogie-beam 30 and two pivotable wheels 28. FIG. 1 shows the apparatus 12 and the bogie-assembly 18 in their working positions, in
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Lezdey John
Melius Terry Lee
Novosad Christopher J.
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