FI112158B - All terrain vehicle for handling and transporting timber, has crane jib rotatable relative to crane turntable on vehicle chassis section - Google Patents

Abstract

The jib arangement (4, 41-47) for the timber crane on the vehicle is rotatable via a link (N) with respect to a turntable (3) on which the crane can rotate relative to a vehicle chassis section (2). The link is located at a distance (E) from the turntable rotation axis (X1). The vehicle has one or more chassis sections (2, 5) with wheels (21, 22, 51-53), a turntable rotatable about an essentially vertical axis being provided on a first chassis section, and a load region (7) for transporting timber being provided on a second chassis section (5).

Description

1112158

Off-road machine to handle and transport trees

The invention relates to an off-road machine for handling and transporting trees according to the preamble of claim 1.

To carry out harvesting, there are known wheeled machines, such as harvesters, with harvesting equipment fitted at the end of the boom, known as harvester heads, for cutting, felling and sawing up a tree trunk of the desired length into a desired length. Sawn timber is collected using a loader equipment, a so-called loader truck, and transported away in the load compartment.

Certain types of harvesters are disclosed in WO 9817099. In one example, a pivoting base rotating about a vertical axis is mounted on the articulated body, with a cab and a boom to which the harvester head is attached. The boom can also be mounted in front of the cab. In another 20 examples, the cab and boom are each secured to the hull and arranged to pivot about a vertical axis.

One wheeled lorry is disclosed in WO 9114610 which comprises two articulated articulated chassis parts. The second frame is provided with a load compartment for collecting the tree trunks from the terrain by means of a load secured to the frame. The first frame is fitted with a cab and a power source for the machine. - • · · · · v: Nowadays also known as. Combined Machines with Combined • * T: 30 harvester and truck functions. This has the advantage that logging and harvesting can be carried out simultaneously, reducing the need for multiple machines in the forest, which also reduces tree damage. Similarly, the number of machine transfers between sites will be reduced. This saves costs, especially in small · V 35 stands and thinning. According to one example, a working machine used as a combination machine comprises a harvester according to WO 9817099 to which a joint is attached. ···. part 2 of frame 112158 comprising a cargo space according to WO 9114610. An example of a known composite machine is also disclosed in US 4,984,961.

Particularly in thinning, abundant trees are left adjacent to the tramline 5 used by the implement, which, however, poses a problem in prior art devices that these trees create obstacles for moving the pruned tree trunk from the terrain to the load compartment.

In this case, the implement has to be positioned in relation to the obstacles so that loading is possible, but then the obstacles can simultaneously reduce the 10 area to which the implement and its boom extend. As a result, the need for moving the machine at the job site between the felling and loading stages of the tree trunk increases, or the working area for felling and pruning trees is unnecessarily limited. The problem in particular is that the transmissions are often short and time-consuming, since the combination machine is more difficult to control in the terrain than a single harvester. The cost of harvesting has also increased as a result of the shrinking working area

It is an object of the present invention to overcome the above-mentioned problems 20, to present a novel and more efficient composite machine. To accomplish this purpose, the implement of the invention is characterized by what is set forth in the characterizing part of claim 1.

The invention is based on the idea that in order to expand the working area of the machine 25 and to circumvent the obstacles, the boom of the machine is arranged to pivot about the pivot axis by means of a pivot, and is arranged on a pivoting pivot further arranged by a separate pivot axis for rotation. In this case the position of the pivot axis of the boom, more specifically the pivot relative to the body, can be: T: 30 changed. Preferably, a cab is also located on the same swivel base, which can be swiveled in the working direction by means of the swivel base.

• · · * * ·

The invention provides significant advantages over prior art machines in which the pivot axis of the boom is: V 35 fixed in relation to the frame. As a result of the invention, the working area reached by the machine from one position is expanded and the various positioning capabilities of the boom are increased, as a result. · ·. the need to move the machine is reduced.

* · · 112158 3

In addition to the prior art composite machines, the invention provides the following advantages. In the work machine according to the invention, during loading and unloading, the cab 5 can be kept stationary, thus avoiding uncomfortable and reciprocating movements for the user. The inertia, acceleration, and braking forces of the swivel base can be significantly reduced when it is not always necessary to move the cab, boom, and attachments, such as the multifunction head, during operation. Moving the boom and multifunction head is often enough. An additional advantage of the boom swivel is that the boom itself does not obstruct the view directly to the work site.

When moving a trolley according to the invention, the trolley can be balanced by turning the boom and simultaneously turning the cab out of the direction of travel, thereby preserving the driver's direction of travel. The implement also becomes shorter, more compact and easier to control in the terrain than the prior art implement in which the boom and cab are each pivotable with respect to the 20 frame members by their own pivot axis.

A further advantage of the invention is that the boom with multifunction heads can be brought as close as possible to the load space, whereby, for example during loading and unloading, the transport distance of trees or bundles is shorter.

25 In addition, the boom reach in tight spaces can be shortened by · · [··; * keeping the boom substantially in the same direction, · ·: if, but by moving the boom pivot axis by rotating the swivel base so that even nearby obstacles can be ignored.

The invention will now be described in more detail using, by way of example, a preferred embodiment of a work machine according to the invention, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a V 35 machine according to a preferred embodiment; viewed from above and. ···. the boom in its outermost position, and Fig. 3 of the 112158 4 shows a top view of a working machine according to another preferred embodiment of the invention.

Referring to Figure 1, the off-road machine 1 for treating and transporting trees in accordance with the invention comprises a first frame part 2 arranged by four wheels, the two wheels 21 and 22 of the first side being visible and the second wheel 23 of the second side. The bogies are secured to the body 2 and arranged to pivot about a transverse and substantially horizontal axis with respect to the driving direction AS. Also located at the front end of the body 2 is a power tool M of the working machine, typically a diesel engine, and the working machine 1 is provided with a mechanical-15 hydrostatic transmission system. The implement 1 is arranged by frame members 2 and 5 to be frame guided.

A pivoting base 3 is mounted on the body part 2, on which also the cab 31 and the pivoting apparatus 41 of the boom 4 are located. The boom 4 20 is arranged in front of the cab 31. With the implement 1 on a horizontal base, the pivoting base 3 is arranged to pivot about a substantially vertical axis X1. Rotation can be limited or unlimited. According to the invention, the boom 4 is further arranged by means of a pivot ......, which also comprises a pivoting assembly 41, to rotate vertically about axis X2, so that the axis of rotation X1 and X2 are arranged * ·

] ··· / substantially parallel and according to the invention the distance E

··· J. more precisely, the pivot N is disposed at said distance E from the first axis of rotation X1. It will be appreciated that the precise structure and shape of the turntable 3 may vary by mm. depending on the type of rocking and rotation equipment, for example, to control the cab. Preferably, the cab 31 is also fitted to the swivel base 3, whereby the cab is secured:: ·. there is no need to arrange separate turning devices.

: 35 The rotary axis X1 allows the position of the rotary axis X2, in particular the pivot point N of the boom 4 in the pivoting assembly 41, to be changed relative to the body part 2 of the machine 1 and the rear body 5.

. ···. The distance E simultaneously illustrates the reason for the distance of the rotation axis X1 and the pivot point N 112158 5. The distance E is, according to one embodiment, between 1.0 and 1.4 meters, preferably 1.2 meters. With respect to the articulation N, the entire boom 4 is rotated with its boom parts 42, 43 and 44. In prior art machines, the articulation N, which then corresponds to the swivel base 3 ni-5, is located on the rotation axis X1, since the boom 4 rotates only 4 is fixedly mounted on the swivel base. In the working machine according to the invention, the pivoting device 41 is, for example, a piston-shaped pivoting device, which is provided with two pistons and a gear-and-rack mechanism 10.

The body part 5 is secured to the body part 2 by a joint 6 which allows the body parts to move relative to one another in a direction substantially transverse to the driving direction AS. In addition, the articulation 6 allows the body-15 portions to rotate about an axis substantially parallel to the driving direction AS. The frame member 5 is arranged to be movable by four wheels, which are two wheels 51 and 52 on the first side and two wheels 53 and 54 on the second side. The wheels are connected to the frame member 5 by bogies showing a bogie 55 on the first side. and 5 arranged in a transverse and substantially horizontal axis with respect to the driving direction AS, by means of a pivot ..... .. A further load space 7 is provided in the frame part 5 for transporting timber such as ::: 25 pruned and cut logs. In the device illustrated in Fig. 1, the cargo space 7 is formed by four substantially U-shaped lugs 71 ^ 74, which are mounted on the body part 5. The tree trunks are transported in the load compartment 7 in the AS-direction of travel. Also provided at the front end of the frame 5 is a wall-shaped log guard 75, which prevents logs loaded in the cargo compartment 7 from sliding and colliding with the cab 31. The log guard 75 and bins 71-74: * · *: can also be provided removable, 7 can be changed.

I · ·; · * 35 The boom 4 comprises three articulated boom sections 42, 43 and 44, the mutual movement of which is controlled by actuators: hydraulic fluid cylinders 45 and 46. Foreign. ··. the boom member 44 is further arranged to be telescopically operable to extend the reach of the boom 112158 6, whereby three nested portions 44a, 44b and 44c are provided. At the free end 47 of the boom, a harvester head known per se (not shown) can be fitted to perform cutting and felling of the growing tree, pruning and trimming of the tree trunk 5, loading and unloading the tree trunks into the cargo space. One such harvester head is disclosed in SE-507930 (SE-9300184-0). It will be appreciated that alternatively a loader equipment known per se, which is used only for loading the trunks, or 10 harvester heads, which are used only for trimming and felling the growing tree and pruning and trimming the tree trunk, can be connected to the end of the boom.

The position of the boom 4 and the pivoting device 41 can also be adjusted to provide the operation according to the invention such that the pivot axis X2 15 is relative to the pivot axis X1 in an oblique position, whereby the pivot axes X1 and X2 preferably intersect. The boom members 42, 43 and 44 are connected by means of pivots and pivot about each other in a substantially horizontal direction. The boom member 42 is arranged substantially vertical and arranged with respect to the swivel base 3 only to pivot about the swivel shaft 20 X1. In the embodiment of Figure 1, the pivot axes X1 and X2 are substantially parallel, vertical and at a constant distance E from each other. The pivot axis X2 can also be provided in an oblique position by the cab 31 by rotating the pivoting base 3, rotating about the horizontal axis, but it will be understood that the ohm :: 25 station can also move independently of the boom 4.

. vi Figure 2 illustrates the wider working range achieved by the invention compared to the advanced technique, * · · v: illustrated in sectorial areas A1 ^ - A3.- Obstacles T1 and T2 illustrate growing trees adjacent to the tramline 1 of the machine when Working machine 1 moves in forest terrain, for example in connection with thinning.

: T: The arc K1 represents the various positions of the articulation N of the boom 4 and the axis X2 of the pivot axis; at a distance E where they can be placed by means of a pivot axis X1 by rotating the pivoting base 3.

'··' 35 * · ·

Further referring to Fig. 2, area A1 illustrates the working area which can be reached by a prior art work machine when the pivot axis X2 is not. ·· *. not enabled. The invention achieves a significant increase in the working area by first rotating the turntable by rotating axis X1 anticlockwise and then rotating the boom 4 by rotating axis X2 clockwise so that the boom 4 and the harvester head attached thereto can now also work in area 5, and without moving machine 1. In addition to this, the invention can work in spite of obstacle T2 also in area A3 when the pivoting platform is in the position shown in Fig. 2 and the boom 4 is rotated anticlockwise. The pivoting angle of rotation can be up to 360 ° and the pivoting angle of the boom can be, for example, 180 ° 10 depending on the distance of the boom from the cab and the shape of the cab.

Further, in Figure 2, the dashed line L1, and also the dotted line L2, if the barrier T1 has been removed, denote different positions of the boom 4, by means of which the same tree can be retrieved by the invention without moving the machine 1.

Prior art implements would have to be moved if there was an obstacle in the position of the boom 4 in Fig. 2 at the boom 4.

Figure 3 further shows a preferred embodiment of a working machine according to the invention, in which boom member 4, boom member 44 is provided with a pivot 20P to rotate boom parts 44 and 43 of boom member 4 about rotation axis X3. The boom section 43 is fixed at both ends to the other boom sections 42 and 44 and is arranged to pivot with respect thereto and the boom section 44 as the outermost boom section. The axis of rotation X3 is arranged - transverse to the axis of rotation of the articulated hinges, which are typically horizontal; **; * between the other boom sections of the boom 4. In Fig. 3, the axis of rotation X3 is arranged substantially vertical with the boom in the extended position. With the boom in mind. In these positions, the rotation axis JrXS is usually substantially vertical. By means of the horizontal joint of the boom sections 44 and 43, the axis X3 can be rotated to an oblique position in the radial direction of the boom1.

* · · * · ·

Areas A4 and A5 illustrate the working area when the angle of rotation of the joint P is about 80 °. Obviously, the angle of rotation can vary. Area A5 images; · * 35 working areas to which the main machine of the invention has a head; despite the obstacle T3, for example, despite the tree trunk. Comparison is made with the device 1 according to Fig. 1 and compared to prior art devices 8 112158, the area A5 forms an extension extending beyond that shown, in the position shown in Fig. 3 up to the boom 4.

The invention is not limited to the above embodiment only, but may be modified within the scope of the appended claims.

Claims (10)

An off-road machine for treating and transporting trees, the machine comprising: - at least one frame member (2, 5) arranged to be movable by means of wheels (21, 22, 23, 51 to 54), 3) disposed on the first frame member (2) and arranged to pivot about a substantially vertical first pivot axis (X1), - a boom (4, 42-47) for working equipment comprising at least two substantially horizontal directions relative to each other; a rotatable boom member (42, 43, 15 44), wherein a hinge (P) is disposed on the outermost boom member (44) of the boom member (4, 42-47) to rotate a substantially vertical third pivot axis (X3) with respect to one another; and - a cargo space (7) arranged to transport the trees, characterized in that: - the boom (4, 42-47) is mounted by means of a joint (N) on said pivoting support (3); a arranged to rotate the said. 25 by means of a joint (N) about a second vertical axis (X2) substantially vertical to said pivoting base (3) disposed at a distance (E) from the first axis of rotation (X1). : 30 A machine tool (1) according to claim 1, characterized in that a bogie (24, 55) is provided on each side of each frame member (2, 5) comprising two wheels (21-22, 51,52). I · · • · · Machine tool (1) according to Claim 2, characterized in that the ... 35 joint (N) comprises a pivoting device (41) fitted to the pivoting base (3) for rotating the second vertical pivot axis (X2) about the boom (4, 42-47). 10 112158 Machine tool (1) according to Claim 2 or 3, characterized in that, by means of the joint (N), the boom (4, 42-47) is arranged to rotate about the second pivot axis (X2) such that the first pivot axis (X1) and the second pivot axis (X1). the pivot axis (X2) being substantially parallel and 5 at said distance (E) from each other, or such that the second pivot axis (X2) is disposed in an oblique position with respect to the first pivot axis (X1). Machine tool (1) according to one of Claims 2 to 4, characterized in that a cab (31) is also located on the pivoting platform (3) and the boom (4, 42-47) is arranged in front of the cab (31). Machine tool (1) according to one of the preceding claims, characterized in that the boom (4, 42-47) comprises three articulated 15 Lever-mounted boom members (42, 43, 44) and pressure medium-acting hydraulic cylinders (45, 46) for controlling the mutual movement of the boom members. Machine tool (1) according to one of the preceding claims, characterized in that the outer boom part (44) is arranged telescopically operable to extend the reach of the boom (4, 42-47). A machine tool (1) according to any one of the preceding claims, characterized in that a wood-bolt is attached to the end of the boom (4, 42-47). ··. 25 harvesting equipment for pruning trees and pruning, pruning and loading the tree trunks into the load compartment (7), loader equipment »« for loading the tree trunks into the load compartment (7), or harvesting equipment for pruning and pruning the tree trunks. : 30 Machine tool (1) according to one of the preceding claims, characterized in that the machine tool (1) further comprises a second frame part (5) arranged to be movable by means of wheels (21, 22, 23, '51-54). ·. the load compartment (7) is disposed on said second frame member (5), and a joint (6) is provided between the first and second frame member (2, 5) and the second frame member (2) and second frame member (5). to allow rotation movement between the part (5). 11 112158 9 112158 Machine tool (1) according to one of the preceding claims, characterized in that the machine tool (1) is frame-guided. s · · «# · 12 112158