FI123328B - TREATMENT FOR TREATMENT - Google Patents

Description

TRAILER FOR GRAIN HARVESTING - SLÄPVAGN FÖR SKOGSDRIVNING FIELD OF THE INVENTION

The invention relates to a trailer for harvesting wood. More particularly, the invention relates to a trailer designed to be coupled to a tractor equipped with a lifting boom for harvesting timber.

BACKGROUND OF THE INVENTION

Nowadays special forestry machines are usually used in forestry. The most important part of them is the harvester head, which operates at the end of 10 lifting booms, where trees are felled, pruned and pruned and either collected in heaps or loaded for immediate transport. Harvester heads are also manufactured for use on chassis machines other than actual forest machines. However, even the lightest harvester heads require a fairly robust chassis machine. Typically, the weight of the chassis machine must be at least 7 tons.

15 Robust and expensive equipment is poorly suited to smaller scale or so-called. self-harvesting on the host line.

There are also known solutions for harvesting where the pruning and trimming device is located outside the harvester head used by the boom.

U.S. Pat. No. 4,333,358 discloses a combination machine comprising articulated 20-coupled traction machine and load, lifting boom and a grapple acting on it. The pruning and trimming device is positioned on the machine frame between the traction machine and the load so that the pre-felled wood can be fed by a grab in a transverse direction of the machine to the pruning and trimming device. The chopped wood can be collected in a bundle on a support placed on the side of the machine, from where they are lifted with a grab to the load compartment.

25 Solutions for the so-called host line are described, for example, in FI

62752 and SE 465761. In these, the trailer is provided with means for pulling the felled wood through a pruner through the pruning device into the cargo space of the trailer.

SUMMARY OF THE INVENTION It is an object of the invention to provide a solution suitable for the so-called. lighter harvesting on the host line.

To accomplish this purpose, a trailer according to the invention intended for coupling to a harvester equipped with a lifting boom for harvesting purposes is characterized in that 35 a fixed or slidably pruning device is mounted at the top of its foreskin or similar structure, with its forward direction substantially The lifting boom of the traction machine can be lifted and fed through the pruning device with its longitudinal load on the trailer.

Preferably, the pruning device further comprises a cutting device.

Fully equipped harvester heads typically weigh about 500 kg or more and thus require a robust machine to operate the har-5 head. In the solution according to the invention, only the grapple or grapple and the cutting device are provided at the end of the working machine lifting boom, whereby their combined weight is preferably in the order of one tenth of the weight of a conventional harvester head. The work machine can then be, for example, a conventional Farm Tractor, whereby the equipment needed can be about 20% of the price of a heavy forestry machine.

The solution according to the invention is particularly well suited for first thinning of planted forest and harvesting of energy wood. Due to the light weight of the grapple, the solution can also be applied to a trailer suitable for towing an ATV, or ATV.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described in more detail below with reference to the accompanying drawings, in which: Figures 1 and 2 show a harvesting operation with a trailer according to the invention and Figures 3 and 4 schematically show some possible embodiments of the solution according to the invention. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

DETAILED DESCRIPTION OF THE INVENTION

2

The four-wheel drive machine 1 of Figure 1 is provided with a lifting boom assembly 2 comprising a base 3 and a hydraulic unit 4, a boom 5 and at its end a grapple 6, and drive and control means 7 by which the operator 8 controls the lifting boom and grapple. Towing machine 1 is connected to five trailer 3 provided with a direction of arrow E as shown in the telescopically extendable and 6 correspondingly shortened drawbar 11 and the frame 7 by shafts 12 mounted pivoting on the platform of the hub. The loading space 9 is defined on the platform by the side posts 10 8 and the front screen 13.

9

At the top of the front screen 13, a conventional pruning device 14 is mounted. The pre-felled tree P is lifted by a grapple 6 and fed from the base to the pruning and trimming device 14, which then processes the wood normally with feed rollers, pruning blades and trimmer 12. T. Qualifying device 14 is in the working direction 13 of the arrow S shown in the trailer or truck than the longitudinal direction. The working direction 14 here refers to the direction in which the pruner moves the tree when handling it and finally removes it 15. The telescopic drawbar 11 and the pivotable loading platform 16 are utilized so that the loading space 9 and the pruning device 14 are placed in a position and position suitable for treating the trees.

3 1 t

Figure 2 shows a combination machine comprising a 2-wheel drive machine IA to which the trailer 3 is coupled with a hydraulically controlled folding drawbar 1 IA. The traction machine is equipped with a hydraulically operated and controlled lifting bar 2A with a grab bar 6 in the same way as the traction machine of Figure 1. At the top of the front screen 13A of the trailer 3 is mounted a pruning device 14 in the same manner as in the trailer of Figure 1. In this case, the trailer 3 can be guided to a suitable position for handling felled trees P by means of a folding drawbar 1A.

Of course, logs or pruned and cut-to-length timber T can of course be arranged in the load area by means of a lifting boom and grapple. The cargo space may also have, for example, two compartments separated by upright posts 10, one of which is provided with logs and the other with thinner pulpwood.

Figure 3 schematically illustrates a possible pruning and trimming device 14 and positioning it in the forelegs of the trailer 13. The trimming and trimming device 14 comprises a frame 15, a feed wheel 16A mounted thereon, a feed wheel 16 17 and the trimming saw 18. The pruning and trimming device 14 naturally also includes the necessary turning and operating devices, hydraulics, control connections and other parts necessary for the operation of the trimming and trimming device. The pruning and trimming device is primarily a lightweight and relatively low-powered device suitable for self-harvesting.

Figure 4 shows an embodiment in which the pruning and trimming device 14A is mounted above the trailer front screen 13A on a beam 19 secured between the screen side posts 13B. Pre-cutting device and the frame 15A, the beam 19 and between the mounting is designed such that the delimbing and cutting device is controllably movable in the beam 19 as illustrated by the arrow M. The lateral movement of the pruning and trimming device facilitates the feeding of trees into the device, for example, in situations where the trailer is difficult to obtain at a sufficiently large angle to the traction machine to successfully feed the trees to the pruning device.

It is clear that the trailer may have, instead of the front screen, another similar, sufficiently high reach, in which the pruning device is mounted.

30 In the examples shown in Figures 1 and 2 herein, pre-felled trees are harvested. For example, the trees may have been felled by a chainsaw by the forest owner himself. It is also possible that the lifting boom is equipped with a clipping device, a saw or a guillotine in addition to the grapple, in which case the weight of the lifting boom needs only a little extra weight. The user of the apparatus would then first fell the tree itself and then lift it to the feeder to be fed in the manner shown in Figure 35 above.

• · 4

It is understood that the pruning and trimming devices described above are only examples. In principle, the device may comprise only a pruning device, in which case the trees should be pruned either pre-treatment or by means of a pruning device connected to the grapple during treatment. Of course, the cutting device provided with the pruning device may also be a guillotine-type or other type of cutter. The pruning device may be any suitable device for this purpose.

The invention may vary within the scope defined by the appended claims.

Claims (2)

1. En släpvagn (3) avsedd for att bli kopplad för skogsdrivning account en dragmaskin (1) för-sedd med en lyftbomanordning (2), kännetecknad av att en kvistningsanordning (14, 14A) monterad fast eller i tvärriktningen av släpvagnid Övre delen av dess frontgrind 20 (13,13 A) eller motsvarande structure (d) arbetsriktning (S) v tirentligen släp-vagnens längdriktning, color et fallt trä (P) kan med dragmaskinens (1) lyftbomanordning (2) lyftas och mätäs genom. kvistningsanordningen account släpvagnens längsgäende lastrum (9). Trailer (3) for coupling to a harvesting machine (1) having a lifting boom device (2) for harvesting, characterized in that it is fixedly mounted at the top of its front screen (13, 13A) or 5 or transversely of the trailer (3). slidably the pruning device (14,14A) so that its working direction (S) is substantially longitudinal to the trailer (3), whereby the felled tree (P) can be raised and fed via the prime mover (2) to the longitudinal loading space of the trailer (9) 10 Trailer (3) for harvesting according to claim 1, characterized in that the pruning device (14,14A) further comprises a cutting device (18). 15 PATENTKRAY 2. En släpvagn (3) avsedd för skogsdrivning, kännetecknad av att kvistningsanordningen 25 (14, 14A) omfattar ytterligare en kapningsanording (18).