FI117997B - Combined harvester and harvester - Google Patents

Description

117997

Combined logging and harvesting machine

The present invention relates to a combined harvester and harvester having a reversible main boom, which at its outermost end is provided with a grapple-5 harvester and a loading grapple arranged to pivot on the tool arm about the transverse axis of rotation of the main boom.

The applicant's prior Finnish patent FI92454 describes a combined harvesting and harvesting machine according to the preamble. Said machine 10 is provided with a transverse boom having a grapple-wester at one end and a loading grapple at the other end, which transverse longitudinally rotates about an axis to rotate the required head to the working position. One problem with this solution is the rigid structure of the transverse boom, which can cause problems when using the tools because each of the 15 tools has to be rotated simultaneously around a common rigid transverse axis.

Accordingly, it is an object of the present invention to provide an improved solution for enhancing the use of tools. To accomplish this goal, the combined harvester and harvester according to the invention is characterized in that each tool has its own tool arm disposed on the main boom; V: The sides of the pivot rotate independently of their own axis of rotation * · 1 ...

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The tool arms are each provided with a pivot axis arranged in such a way that they can pivot independently of one another.

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The combined harvesting and harvesting machine according to the invention is particularly suited for first thinning and also for felling heavy trees for co-operation between a lumberjacksman and a mechanic, where the lumberman goes above and beyond to cut heavy trees and machine: 30 pruning and felling aboard the aircraft.

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In the following, the invention will be described in more detail with reference to the accompanying drawings, in which: Fig. 1 is a schematic top plan view of the outermost section of the main boom with a tool arm arrangement according to the invention; Fig. 2a is a schematic view of the grapple Figure 2b shows a grapple harvester rotated in its resting position in a schematic side view, Figure 3a shows a side elevation view of the tool arms, and Figure 3b shows a cross sectional view of the tool arms.

Fig. 1 is a schematic top plan view of the outermost portion of the main boom 1 provided with a tool arm arrangement according to the invention, comprising a grapple portion 3 connected to a tool arm 2 and is hinged to the end of its tool arm 4 and can be rotated in an upright position so that it engages its own tool arm just like a wood frame, after which the tool arm can be swiveled under the main boom • · · * · *. Fig. 2a is a schematic illustration of a grapple harvester only 5 · · ·: * ·; locked in its tool arm 4 and in Fig. 2b, the grapple harvester is pivoted into its alleεροί position under the main boom 1. Locking the grapple harvester on its tool arm ··· · • 25 and placing it in a rest position stabilizes the machine and releases the grapple.

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Similarly, the grapple part 3 can be locked directly into the main boom when not in use, thus allowing the grapple harvester 5 to be used more freely.

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Figures 3a and 3b show schematically an arrangement 11 of a pivot axis 30 according to the invention, which comprises a first pivoting arrangement arranged on a second tool arm 4. a working axis 6 and a second pivot axis 7 arranged on one side of the main boom 1 on the other tool arm * m ♦ · · 2, the axes of which are connected to each other in position 15 • * *. so that they can turn independently. Each pivot axis 6, 7 has a toothed peripheral part 8 which may be formed directly on the shaft 3 117997 or be formed by a separate gear ring which is mounted on the shaft and which is not rotated relative to the shaft. To drive the pivot shafts 6, 7 and the corresponding tool arms 4, 2, the rack member 2 is provided with toothed rails 9, which are driven, for example, by hydraulic cylinders 10.

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The solution according to the invention improves the usability of the tools by allowing the inactive tool to be placed in a resting position under or adjacent to the main boom 1, thereby shifting the focus closer to the machine frame, in particular accelerating the grapple.

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Claims (3)

4 117997 I Combined harvesting and harvesting machine with a reversible head J boom (1) provided at its outermost end with a grapple harvester (5) and a load grapple (3) arranged to pivot on the tool arm in the transverse direction of the main boom (1). rotation axis, characterized in that each tool (3, 5) has its own tool arm (2, 4), which are disposed independently of each other about its own axis of rotation. 10 Combined harvester and harvester according to claim 1, characterized in that the axes of rotation of the tool arms (2, 4) are substantially aligned in the transverse direction of the main boom (1). Combined harvester and harvester according to claim 1, characterized in that each tool arm (2, 4) is mounted on its own pivot axis (7, 6), which pivot axes are pivotable about one another! such that the tool arms (2,4) are pivotable independently of each other, wherein each pivot axis is provided with a toothed peripheral member (8), the main boom (1) being provided with toothed rails (9) cooperating with said toothed peripheral members (8). ) to rotate each pivot axis (6, 7) and the tool arm (4, 2) attached to it • · 1 • · ® .1 around the axis of rotation. • φ · · · 1 1 1 1 1 • 1 1 1 *** *** *** *** *** *** *** '*** *** *** *** *** ***' '' *** *** · * 1 · • 1 ·) ·· 1 • t • · * 1 · * • · * · · · 1 ·. • · t · ·! • 1 • ·. .1 ··· • · * · 1 • · i · 1 • · «· • · 5 117997