Lifting device
US-11802030-B2 · Oct 31, 2023 · US
US2022033232A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022033232-A1 |
| Application number | US-202117335658-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 1, 2021 |
| Priority date | Jul 28, 2020 |
| Publication date | Feb 3, 2022 |
| Grant date | — |
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Official abstract text for this publication.
A collection method using a collection system including a lifting device that is configured to wind up an overhead line supported by a support post, a suspension device that is connected to the overhead line and is movable in the air as the lifting device winds the overhead line, and a grip device suspended from the suspension device includes a step of gripping a tree by the grip device at two points, a step of cutting the gripped tree, a step of tilting the cut tree such that a longitudinal direction of the tree is along a horizontal direction, and a step of conveying the tree gripped by the grip device as the lifting device winds the overhead line.
Opening claim text (preview).
What is claimed is: 1 . A collection method using a collection system including a lifting device that is configured to wind up an overhead line supported by a support post, a suspension device that is connected to the overhead line and is movable in the air as the lifting device winds the overhead line, and a grip device suspended from the suspension device, the collection method comprising: a step of gripping a tree by the grip device at at least two points; a step of cutting the gripped tree; a step of tilting the cut tree such that a longitudinal direction of the tree is along a horizontal direction; and a step of conveying the tree gripped by the grip device as the lifting device winds the overhead line. 2 . The collection method according to claim 1 , further comprising a step of moving the cut tree upward between the step of cutting the tree and the step of tilting the tree. 3 . The collection method according to claim 1 , wherein: the grip device includes a first grip portion that grips a root side of the tree and a second grip portion that grips an upper portion of the tree with respect to the first grip portion; and the step of tilting the tree includes tilting the tree by moving the first grip portion upward. 4 . A collection system, comprising: a plurality of support posts; an overhead line supported by the support posts; a lifting device that is configured to wind up the overhead line; a suspension device that is connected to the overhead line and is movable in the air as the lifting device winds the overhead line; and a grip device suspended from the suspension device, wherein: the grip device includes a first grip portion that grips a root side of a tree, a second grip portion that grips an upper portion of the tree with respect to the first grip portion, a wire that suspends the first grip portion and the second grip portion, and a motor that winds up the wire; the motor is driven to wind the wire so as to tilt the tree that is cut such that the cut tree is along a horizontal direction; and the lifting device winds the overhead line to convey the tilted tree.
Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways (rope or cable drives for trolleys, combinations of such drives with hoisting gear B66C11/16; railway systems B61B; rope or cable winding mechanisms B66D1/00) · CPC title
Collecting felled trees · CPC title
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