Woodworking – Special-work machine – Combined
Patent
1996-08-30
1998-01-06
Bray, W. Donald
Woodworking
Special-work machine
Combined
144335, A01G 2308
Patent
active
057044066
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to combining the actions of a harvesting machine and a transporting machine in a single machine.
The invention is based on the fact that the current machine stock is primarily suitable for clear cutting and even for that it is needlessly expensive. Normally, the cutting or logging operations are performed by using a separate cutting or harvesting machine, whose price can be e.g. about 1,5-2 million Finnish marks, and also by using a separate transporting machine which generally costs over 1 million Finnish marks and, thus, such a combination of machines costing nearly 3 million Finnish marks is not particularly feasible for economical thinning operations and, when the combination has been used for this type of thinning work, the remaining trees have suffered damage. Hence, an object of the present invention is to provide a novel type of forestry machine, whose primary application concerns thinning operations but which is naturally useful for other cutting operations as well. A novel type of machine of the invention is particularly suitable for the cooperation between a logger and a machine operator, wherein the logger leads the way felling and cutting the heavy trees and the machine is used for lopping and cutting the tops and for picking up the cut timber to be carried away by the transporting machine. Such a combination is even economically sound as the cutting by manual labour produces quality logs and results in a more through exploitation of timber. In addition, the logging as manual labour is relatively inexpensive, e.g. about FIM 20,-/solid meter, while the production of spruce pulp as manual labour incurs about treble costs.
A novel forestry machine of the invention is characterized by what is set forth in the characterizing section of claim 1.
The invention will now be described with reference made to the accompanying drawings, in which:
FIG. 1 shows a schematic exemplary view of one transporting machine suitable for carrying timber and adaptable to practicing the present invention.
FIGS. 2, 3, 4 and 5 show a schematic side view and frontal view, respectively, of a detail according to one embodiment of the invention in two different operating positions.
FIG. 6 is a schematic frontal view showing a detail in another embodiment of the invention, and
FIGS. 7 and 8 show schematically another detail of the invention.
As shown in FIGS. 1 through 5 of the invention includes a conventional boom assembly 1 having its outer end fitted with a crosswise jib 2. One end of the crosswise jib 2 is provided with a clamp harvester 4 and the other end with a loading gripper 3. The crosswise jib 2 is adapted to pivot in its longitudinal direction around an axle 8 for turning either one of the ends 3 or 4 to a working position, as required.
FIGS. 2 through 5 illustrate in more detail a linkage between the crossarm 2 and the rest of the boom assembly 1. In FIG. 2 and 3 the crosswise jib is shown in a side view and in an end view from the outermost end of the boom assembly with the loading gripper in its lower operating position. Respectively, FIG. 3 illustrates the clamp harvester 4 in its lower operating position. Naturally, these operating positions are just examples and the jib 2 can be locked in any desired pivoted position, for example in a position forming a substantially longitudinal extension for the rest of the boom assembly 1 for providing a maximum reach. The crosswise jib 2 is adapted to pivot around the axle 8. This pivoting action can be effected e.g. by means of a hydraulic cylinder 5 and associated gear rack 6 fitted inside the boom assembly 1, said gear rack 6 being in cooperation with a gear 7 mounted on the axle 8, whereby the shifting of said gear rack 6 forward or backward rotates the axle 8 and the crosswise jib 2 mounted thereon. The axle 8 is journalled to the boom assembly 1. This pivoting action of the jib 2 can naturally be effected in many other ways known as such to a person skilled in the art. In view of practical operation, it is also preferred that the clamp
REFERENCES:
patent: 4911215 (1990-03-01), Phipps
patent: 5109900 (1992-05-01), Gilbert
patent: 5390715 (1995-02-01), Luscombe
Bray W. Donald
Taylor Reese
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