DE202018001332U1 - boom support - Google Patents

Abstract

Boom support (2) for the relief of outriggers (1) characterized by tree harvesters in that
1. at least one boom support (2) is articulated on a boom (1).
2. according to claim 1, the boom support (2) with an adjusting device (6) is connected.
3. according to a preceding claim, the boom support (2) is provided with at least one Ausschubelement (3).
4. According to any preceding claim, the boom support (2) is provided with a load transfer element (4).
5. According to a preceding claim, the load transfer element (4) via a joint (5) with the boom support (2) or in the presence of a Ausschubelementes (3) is connected thereto.
6. According to a previous claim, the load transfer element (4) is designed as a wheel or support plate.
7. According to a previous claim, the load transfer element (4) is provided with claws (7) or other suitable elements for penetration into the ground.
8. According to a previous claim, the control valve of the adjusting device (6) has a control position "floating position".
9. according to a previous claim, a tree clamp (8) with the boom (1) is connected.

Description

Summary

The innovation relates to a support device on the boom of a harvester, which is used for harvesting trees.

situation

Forest thinning is carried out regularly by harvesters, wood harvesting machines consisting mainly of a moving on wheels or caterpillar carrier vehicle and a built-up crane with attached thereto Aufarbeitungsaggregat. Thus, trees are sawed off in the stock, taken from the stock, snapped and cut. Here are the harvesters on backstreets. These lanes are parallel to each other at a distance of 20 m (or more) created. Usual harvesters have a crane reach of approx. 6 - 8 meters. Between the back lanes thus remains a several meters wide unprocessed block.

In general, a distinction must be made between underpinned / naturally-rejuvenated and non-subsurface / non-naturally re-planted stands. In clear, unprotected stands is the pulling of the felled tree by crane to the harvester relatively easy; in the case of built-up stands, the sanding of the felled tree over the forest floor damages the built-up structure, i. The cut tree must be lifted from the stock.

State of the art

Harvester with longer and stronger cranes have already been retrofitted. However, these overstretch the frame of the harvester or bring the machine to tilt; also results in a Unterdimensionierung of the hydraulic system. Also, the attachment of hydraulic supports, as known from mobile cranes, is unsuitable because the supports have to be retracted and retracted with each movement of the harvester, with a corresponding loss of time. In addition, they are bulky and can damage the remaining stock.

Also large excavator - Harvester are used. These have sufficient crane reach and lift. The disadvantage, however, are the much higher initial costs compared to the conventional harvester, the large machine dimensions which lead to inventory damage, the weight of up to 60 tons, as well as high costs for the implementation of the equipment by means of heavy transport.

aim

The aim of the innovation is to make standard wheel harvester or medium excavator harvester capable of harvesting trees that were harvested at a distance of 6 to 8 meters from the harvester - now at a distance of up to 10 meters. and if necessary, lift it out of the built-up structure to avoid an unprocessed block.

Advantages of the innovation

Achieved the goal by placing the boom ( 1 ) with a jib support ( 2 ).

It is advantageous that when using the boom support ( 2 ) and getting up the load transfer element ( 4 ) on the ground an extended boom ( 1 ) can be used without the harvester is loaded and tilts if necessary. Particularly noteworthy is that when extending the Ausschubelements ( 3 ) (Variant 1 ), or the adjusting device ( 6 ) (Variant 2 ) the lifting force of the boom ( 1 ) is increased. The hydraulic capacity does not need to be increased. Investing in a larger wheel harvester or even large excavator harvester with the associated higher operating costs are no longer necessary.

description

• Variante 1 (siehe 1): Die Auslegerstütze (2) ist am Grundausleger (1a) angelenkt.

Various variants of the attachment of a jib support ( 2 ) on the boom ( 1 ) or working methods are possible:

• Variant 1 (see 1 ): The boom support ( 2 ) is at the basic level ( 1a) hinged.

The boom support ( 2 ) is controlled by the actuator ( 6 ). The adjusting device ( 6 ) preferably consists of a hydraulic cylinder below the basic boom ( 1a) is appropriate. On the jib prop ( 2 ), or the Ausschubelement ( 3 ) is a load transfer element ( 4 ) provided in the form of a sheet. This lies on the ground and transmits a part of the on the boom ( 1 ) lying on the ground. The load transfer element ( 4 ) can with one or more claws ( 7 ) to prevent slippage, for example, on a slope. Between the ejection element ( 3 ) and the load transfer element ( 4 ) is a joint ( 5 ) arranged, for example, to compensate for a hillside. The joint ( 5 ) For this purpose is preferably designed as a ball or universal joint. The boom support ( 2 ) is equipped with a Ausschubelement ( 3 ) to provide additional lifting power on the boom ( 1 ) or basic ( 1a) to create.

Mode of operation for under-built / naturally-reused stands:

The boom support ( 2 ) is in its rest position approximately parallel to the basic boom ( 1a) , It is controlled by the actuator ( 6 ) placed in an approximately vertical position. Thereafter, the control valve of the adjusting device ( 6 ) in floating position to movements of the boom ( 1 ) or the basic architect ( 1a) or of the pendulum boom ( 1b) not to block. Then the basic boom ( 1a) lowered. To a deep lowering of the basic boom ( 1a) If necessary, the ejection element ( 3 ) is partially extended until the load transfer element ( 4 ) reaches the ground. The tree is fixed by means of the tree bracket ( 8th ) and sawed off by the workup unit. The lifting of the tree takes place by the extension of the ejection element ( 3 ) in connection with the lifting of the basic boom ( 1a) , When lifting the tree, the load is largely on the boom support ( 2 ), the ejection element ( 3 ), the joint ( 5 ) and the load transfer element ( 4 ) discharged to the ground and relieves the harvester in its carrier function. The tree is replaced by pulling in the thrust arm ( 1c) and / or buckling of the pendulum boom ( 1b) swung closer to the harvester until the boom ( 1 ) can lift the load of the tree on its own. The boom support ( 2 ) can remain in its vertical position for another working cycle, or again parallel to the basic boom ( 1a) to be led back. Depending on the design of the jib ( 1 ) is the attachment of the boom support ( 2 ) also on the pendulum boom ( 1b) or another sub-boom conceivable.

variant 2 (please refer 2 ): The boom support ( 2 ) is on the pendulum boom ( 1b) hinged.

The load transfer element ( 4 ) is designed as a wide wheel, preferably made of light metal, and is by means of the adjusting device ( 6 ) in the desired position.

Working method for non-supported / non-naturally re-planted stocks:
The tree is fixed by means of the tree bracket ( 8th ) and cut off from the refurbishment unit. Here, the load transfer element ( 4 ) by the adjusting device ( 6 ) pressed to the ground and thus raised the tree. The truncated tree is kept in a vertical position by means of the jib ( 1 ) to the harvester until the boom ( 1 ) can lift the load of the tree on its own.
The advantage of this procedure is that the cut tree is not brought down at its location but at a suitable location where no crowns / branches of remaining trees are damaged.

list of figures

• 1 shows one on the basic boom ( 1a) mounted outrigger support ( 2 ) with ejection element ( 3 ), Joint ( 5 ) Load transfer element ( 4 ) in the form of a sheet, claws ( 7 ), as well as the adjusting device ( 6 ).
• 2 shows one on the pendulum boom ( 1b) mounted outrigger support ( 2 ) with a designed as a wheel load transfer element ( 4 ), the adjusting device ( 6 ), as well as the tree bracket ( 8th ).

Claims (1)

Boom support (2) for the relief of outriggers (1) of tree harvesters, characterized in that 1. at least one boom support (2) on a boom (1) is articulated. 2. according to claim 1, the boom support (2) with an adjusting device (6) is connected. 3. according to a preceding claim, the boom support (2) is provided with at least one Ausschubelement (3). 4. According to any preceding claim, the boom support (2) is provided with a load transfer element (4). 5. According to a preceding claim, the load transfer element (4) via a joint (5) with the boom support (2) or in the presence of a Ausschubelementes (3) is connected thereto. 6. According to a previous claim, the load transfer element (4) is designed as a wheel or support plate. 7. According to a previous claim, the load transfer element (4) is provided with claws (7) or other suitable elements for penetration into the ground. 8. According to a previous claim, the control valve of the adjusting device (6) has a control position "floating position". 9. according to a previous claim, a tree clamp (8) with the boom (1) is connected.

Images