WO1989005091A1 - Procede et appareil d'extraction de souches d'arbres - Google Patents

Procede et appareil d'extraction de souches d'arbres Download PDF

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Publication number
WO1989005091A1
WO1989005091A1 PCT/EP1988/001128 EP8801128W WO8905091A1 WO 1989005091 A1 WO1989005091 A1 WO 1989005091A1 EP 8801128 W EP8801128 W EP 8801128W WO 8905091 A1 WO8905091 A1 WO 8905091A1
Authority
WO
WIPO (PCT)
Prior art keywords
base structure
tree stump
hydraulic ram
hydraulic
stays
Prior art date
Application number
PCT/EP1988/001128
Other languages
English (en)
Inventor
Bernardus Jan Vandenberg
Original Assignee
Bernardus Jan Vandenberg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bernardus Jan Vandenberg filed Critical Bernardus Jan Vandenberg
Publication of WO1989005091A1 publication Critical patent/WO1989005091A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/06—Uprooting or pulling up trees; Extracting or eliminating stumps
    • A01G23/062—Pulling up trees or stumps
    • A01G23/065—Pulling up trees or stumps in a substantially vertical plane

Definitions

  • THIS INVENTION relates to a method of, and apparatus for, extracting tree stumps.
  • a method of extracting a tree stump which comprises placing a base structure on the ground adjacent the tree stump in such a manner that the base structure engages the ground on opposite sides of the tree stump; gripping the tree stump with gripping means; and forcibly displacing the gripping means upwardly by lifting means which reacts downwardly on the base structure .
  • the area of contact between the base structure and the ground may at least partly surround the tree stump, extending from one of said sides to the other.
  • the lifting means may comprise a pair of hydraulic rams which are arranged diametrically opposite one another with respect to the tree stump.
  • tree stump extracting apparatus which comprises : a base structure adapted to engage with the ground surface on opposite sides of a tree stump; gripping means for gripping the tree stump; and lifting means for forcibly displacing the gripping means upwardly with respect to the base structure while reacting downwardly on the base structure.
  • the apparatus may include a beam extending from one side of the base structure to the other, the lifting means comprising a first hydraulic ram extending from one side of the base structure to one end of the beam and being connected to the beam by a first pivot connection and a second hydraulic ram extending from the opposite side of the base structure to the other end of the beam and being connected to the beam by a second pivot connection, and the gripping means being suspended from a region of the beam between the first and second pivot connections.
  • Each of the hydraulic rams may be held in an erect condition with respect to the base structure by means of two or more stays.
  • the first hydraulic ram may be held immovably in the erect condition by means of at least three of said stays, and the second hydraulic ram may be held in the erect condition by a pair of diametrically opposed stays, the second hydraulic ram being connected to the base structure by a third pivot connection, and said opposed stays being arranged such that the second hydraulic ram is able to pivot with respect to the base structure about the third pivot connection.
  • the lifting means may comprise a first hydraulic ram and a second hydraulic ram, the first hydraulic ram being connected to one side of the base structure by a first pivot connection, and the second hydraulic ram being connected to the other side of the base structure by a second pivot connection; the first and second hydraulic rams extending upwardly and towards one 5 another and being connected together at their upper ends by a common pivot connection; and each of the hydraulic rams being held in an erect condition with respect to the base structure by means of a pair of diametrically opposed stays which are arranged such j _0 that the hydraulic ram is able to pivot with respect to the base structure about the respective first or second pivot connection.
  • the stays referred to above may each comprise a flexible, tensionable element, and means for l ⁇ tensioning the tensionable element.
  • the gripping means may comprise two or more jaws for gripping the tree stump therebetween.
  • the gripping means may comprise a noose for encircling the tree 0 stump.
  • FIG. 5 Figure 1 is a vertical section, on line I-I in Figure 2, of tree stump extracting apparatus in accordance with one embodiment of the invention
  • Figure 2 is a horizontal section on line II-II in Figure 1; 0 Figure 3 shows one of the stays forming part of the apparatus;
  • Figure 4 is a vertical section of tree stumpo extracting apparatus in accordance with another embodiment of the invention, on line IV-IV in Figure 5 ; and
  • Figure 5 is a plan view of the apparatus of Figure 4.
  • reference numeral 10 generally indicates apparatus for extracting a tree stump 12.
  • the apparatus comprises a base structure 14, and a beam 16 extending from one side of the base structure to the other.
  • the beam is supported on the base structure by means of a pair of hydraulic rams 18.1 and 18.2.
  • the base structure 14 comprises three sturdy structural members such as inverted U-section beams 24.1, 24.2, and 24.3 arranged on three sides of a rectangle, the beam 24.2 extending beyond the corner where it meets the beam 24.3, to form an extension 26.
  • On the underside of the beams there is welded a spreader pad or plate 28.
  • the base structure 14 further comprises, on the fourth side of the rectangle, a gate 32 which, at each opposite end thereof, is connected to the adjacent sides 24.1, 24.3 by means of a connector pin 34. When one of the pins 34 has been removed, the gate can be swung open, pivoting about the pin at the other end .
  • the beam 16 comprises two parallel plates 36 each with an opening 38 therein to lighten the structure.
  • the hydraulic ram 18.1 is connected at the bottom to the beam 24.1 by means of a pivot connection 40.1 and at the top to the one end of the beam 16 by means of a pivot connection 42.1.
  • the hydraulic ram 18.2 is connected at the bottom to the 5 beam 24.3 by means of a pivot connection 40.2 and at the top to the other end of the beam 16 by means of a pivot connection 42.2.
  • the hydraulic ram 18.1 is held in an erect condition by means of a pair of diametrically opposed 0 stays 44.1 and 44.2 which, at the top, are connected to the cylinder of the hydraulic ram and, at the bottom, to opposite ends of the beam 24.1.
  • the stays 44.1 and 44.2, the hydraulic ram 18.1, and the pivot axis of the pivot connection 40.1 lie in the same 5 plane. This allows the hydraulic ram 18.1 to tilt somewhat about the pivot connection 40.1, in the direction of arrows A.
  • the hydraulic ram 18.2 is held in an upright condition by means of three stays 44.3, 44.4, and o 44.5.
  • the stays 44.3 to 44.5 are all at the top connected to the cylinder of the hydraulic ram 18.2.
  • the stays 44.3 and 44.4 are connected to the beam 24.2, on opposite sides of the beam 24.3, whereas the stay 44.5 is connected to that end of the beam 24.3 which is adjacent the gate 32.
  • the gripping means 22 comprises a pair of arms 46 which are each, at the lower end thereof, fitted with a pronged gripping pad 48.
  • the gripping pads 48 are connected to the respective arms by means of a pivot connection 50.
  • the arms 46 are each connected to the beam 16 by means of a pivot connection 52 and extend upwardly beyond the pivot connections 52.
  • the stay 44.1 is illustrated in more detail in Figure 3.
  • the stay comprises a length of chain 58 which, at the bottom, is connected via a shackle 60 to the beam 24.1, and a screw shackle 62 which, at the upper end thereof, is connected via a shackle 64 to the cylinder of the hydraulic ram.
  • the stay can be tensioned or untensioned by turning the screw shackle 62.
  • the apparatus 10 will be transported from one tree stump to the other by means of a vehicle which is provided with a hydraulic pump of sufficient power to drive the apparatus.
  • the hydraulic rams 18.1, 18.2, and 54 will be connected to the hydraulic pump of the transport vehicle by means of suitable control valves and hydraulic hoses.
  • the hydraulic rams 18.1 and 18.2 will both be in the retracted condition, as illustrated in the drawings.
  • the hydraulic ram 54 will be in the retracted condition, so as to hold the gripping means 22 in an open condition.
  • the gate 32 When the vehicle has arrived at a tree stump which is to be extracted, the gate 32 is opened and the apparatus manouvred around the tree stump and the gate 32 then closed. The apparatus is then lowered until the spreader plate 28 rests on the ground surface. The apparatus will now support itself on the ground .
  • Hydraulic oil is now pumped to the hydraulic rams 18.1 and 18.2 to extend them, thus displacing the beam 16 upwardly and extracting the tree stump 12.
  • the stays 44.3, 44.4, and 44.5 hold the cylinder of the hydraulic ram 18.2 immovably in position, whereas the hydraulic ram 18.1 can tilt somewhat in the direction of arrows A. This tilting movement will be required if the one hydraulic ram extends somewhat more than the other. Indeed, the one hydraulic ram may deliberately be extended more than the other, and this can be done in an alternating fashion, to assist in extracting the tree stump 12.
  • the beam 16 may be provided with a vibrator which may be operated when the tree stump has been extracted and is still gripped in the gripping means 22. This will have the effect of shaking the tree stump and so ridding it of excess soil.
  • the gate 32 may be fixed instead of being openable ' . In this event, it will be necessary for the apparatus to be dropped over the tree stump 12 from above, instead of being ' sable to move it into position horizontally.
  • the base structure 14 need not necessarily have a rectangular shape in plan view. It may, for example, be D-shaped or round .
  • the gripping means 22 illustrated comprises two opposed jaws, it will be appreciated that three or more peripherally spaced jaws may be used if it is desired to spread the gripping forces acting on the tree stump more evenly around the circumference of the stump.
  • reference numeral 70 generally indicates tree stump extracting apparatus according to another embodiment of the invention.
  • the same reference numerals as in Figures 1 and 2 are used to designate the same parts or parts having an equivalent function.
  • the base structure 14 differs from that in the Figures 1 and 2 embodiment in that it does not include the extension 26.
  • the hydraulic rams 18.1 and 18.2 of the apparatus 70 are, at the top, connected together by a common pivot " connection 72. From the pivot connection 72 there is suspended a cable noose 74 which is used to grip the tree stump 12.
  • the hydraulic ram 18.1 is supported by two stays 44.6 and 44.7..
  • the hydraulic ram 18.2 is supported by two stays 44.8 and 44.9.
  • the stays 44.6 to 44.9 have the same general construction as the stay 44.1 illustrated in Figure 3.
  • the stays 44.6 and 44.7, the ram 18.1, and the pivot axis of the pivot connection 40.1 lie in the same plane, so that the hydraulic ram 18.1 can tilt about the pivot axis of the connection

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

Un appareil d'extraction de souches d'arbres (12) comprend une base (14) d'ancrage dans la surface du sol autour de la souche, un dispositif (22) d'accrochage de la souche et un dispositif de levage (18.1, 18.2) qui fait monter le dispositif d'accrochage par rapport à la base tout en descendant sur la base.
PCT/EP1988/001128 1987-12-04 1988-12-02 Procede et appareil d'extraction de souches d'arbres WO1989005091A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA879136 1987-12-04
ZA879136 1987-12-04

Publications (1)

Publication Number Publication Date
WO1989005091A1 true WO1989005091A1 (fr) 1989-06-15

Family

ID=25579089

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1988/001128 WO1989005091A1 (fr) 1987-12-04 1988-12-02 Procede et appareil d'extraction de souches d'arbres

Country Status (3)

Country Link
EP (1) EP0343224A1 (fr)
AU (1) AU2811989A (fr)
WO (1) WO1989005091A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271978A (en) * 1992-10-28 1994-05-04 Richard Frederic Stannard Fence post extractor
ES2270729A1 (es) * 2005-09-21 2007-04-01 Universidad Politecnica De Valencia Instalacion para el aprendizaje del apeo de arboles.
EP1956882A1 (fr) * 2005-12-01 2008-08-20 Karelian-Puu-Ja Metalli Oy Appareil pour traiter des souches
CN112470859A (zh) * 2020-11-24 2021-03-12 宣晓永 一种用于植树的枯死树桩拔除的设备
RU2765246C1 (ru) * 2021-06-10 2022-01-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Корчеватель

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2025340A (en) * 1935-04-15 1935-12-24 Eben C Crocker Stump puller
BE672590A (fr) * 1964-11-20 1966-03-16
US3647185A (en) * 1969-10-24 1972-03-07 William Wayne Phibbs Power-operated pulling implement
FR2169107A1 (fr) * 1972-01-22 1973-09-07 Shaw Steelworkers Ltd
DE2319728A1 (de) * 1973-04-18 1974-10-31 Hochtief Ag Hoch Tiefbauten Vorrichtung zum ziehen von pfaehlen, spundbohlen und dergl

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2025340A (en) * 1935-04-15 1935-12-24 Eben C Crocker Stump puller
BE672590A (fr) * 1964-11-20 1966-03-16
US3647185A (en) * 1969-10-24 1972-03-07 William Wayne Phibbs Power-operated pulling implement
FR2169107A1 (fr) * 1972-01-22 1973-09-07 Shaw Steelworkers Ltd
DE2319728A1 (de) * 1973-04-18 1974-10-31 Hochtief Ag Hoch Tiefbauten Vorrichtung zum ziehen von pfaehlen, spundbohlen und dergl

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271978A (en) * 1992-10-28 1994-05-04 Richard Frederic Stannard Fence post extractor
ES2270729A1 (es) * 2005-09-21 2007-04-01 Universidad Politecnica De Valencia Instalacion para el aprendizaje del apeo de arboles.
EP1956882A1 (fr) * 2005-12-01 2008-08-20 Karelian-Puu-Ja Metalli Oy Appareil pour traiter des souches
EP1956882A4 (fr) * 2005-12-01 2011-04-27 Kareliatech Oy Appareil pour traiter des souches
CN112470859A (zh) * 2020-11-24 2021-03-12 宣晓永 一种用于植树的枯死树桩拔除的设备
RU2765246C1 (ru) * 2021-06-10 2022-01-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Корчеватель

Also Published As

Publication number Publication date
EP0343224A1 (fr) 1989-11-29
AU2811989A (en) 1989-07-05

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