WO1984001085A1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

Info

Publication number
WO1984001085A1
WO1984001085A1 PCT/SE1982/000297 SE8200297W WO8401085A1 WO 1984001085 A1 WO1984001085 A1 WO 1984001085A1 SE 8200297 W SE8200297 W SE 8200297W WO 8401085 A1 WO8401085 A1 WO 8401085A1
Authority
WO
WIPO (PCT)
Prior art keywords
grooves
centre
chains
plane
intended
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/SE1982/000297
Other languages
English (en)
Inventor
Stig Pettersson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/SE1982/000297 priority Critical patent/WO1984001085A1/fr
Publication of WO1984001085A1 publication Critical patent/WO1984001085A1/fr
Priority to FI842090A priority patent/FI76475C/fi
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • A01G23/08—Felling trees
    • A01G23/093—Combinations of shearing, sawing or milling apparatus specially adapted for felling trees
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/404—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having cutters driven to oscillate in a horizontal plane

Definitions

  • This invention relates to an attachment device at brush clearing units, by means of and on which clearing chains are mounted on a rotary head, centre.
  • a head or centre in the form of a substantially plane circular disc rotatable in a horizontal plane, is located at a hydraulically operated axle, and normally three chains are attached to the head with 120 divis ⁇ ion along the periphery, which chains in operation are intended to swing outward in a horizontal plane.
  • the attachment of the chains to said head has proved to involve great problems.
  • the chains are threaded on a wire, which at each end is provided with a hook or the like.
  • grooves are provided which form a regular triangle with corners at the periphery of the head.
  • said wire is intended to be positioned so that an eye, to which a chain is att- ached, is formed at*each corner, in such a manner, that the wire is retained in place in the grooves by two fixing pins located in one of the grooves and intended to co-operate with said hooks, and by a cover covering the grooves.
  • said hooks and/or said eyes break, often after a very short time of operation, whereby one or several chains get loose.
  • the substantial dynamic strains arising in operation concentrate at the design described to these members.
  • the eyes are subjected a.o. to a great number of bendings, due to forces arising in the circumferential direction of the head and prop ⁇ agating from the chain to the eye.
  • a chain thus disconnected can fly up to 300 m and there-
  • the present invention relates to an attachment head or chain attachment, by which the aforesaid problems are entirely eliminated.
  • the invention thus, relates to an attachment device for chains at shrub clearing units, comprising a head, centre, preferably in the form of a circular plate rotatable in the plane of the device, to which plate the chains, normally three in number, are intended to be attached, and from which the chains are intended to swing outward substantially in said plane.
  • the attachment device is characterized in that said centre comprises three equal grooves, which are located in said plane and uniformly distributed in respect of the circumference of said centre, that each groove opens in two places at the periphery of said centre and extends in a curve, which preferably is part of a circular arc, between said places, and in each groove an attachment ring for a chain is located and partially projects outside the periphery of said centre, and the grooves at least partially are covered by a cover or the like.
  • Fig. 1 shows an attachment head, centre, acc ⁇ ording to the invention, seen from the side where the chains with attachment rings are inserted into the head, and where one chain is shown, and the cover is not shown
  • Fig. 2 is a section A-A according to Fig. 1. -.
  • the numeral 1 designates an- attachment head or centre comprised in the device preferably in the form of a circular plate 1, which is rotatable in its plane by means of, for example, a central hole 2, into which an axle (not shown) " is intended to. be inserted perpendicularly to said plane.
  • said centre 1 5 comprises three equal grooves 3 3 which are located subst ⁇ antially in said plane and uniformly distributed in respect of the ci rcumference k , periphery k , of said centre, i.e. with 120° division.
  • Each groove 3 opens in two places 5,6 at the periphery and extends in an arc 7 ⁇ which 0 preferably is a part of a circular arc 7, between said places 5,6.
  • each groove 3 an attachment ring 8 is provided, which projects partially outside the periphery -4.
  • Fig. 1 only one attachment ring 8 is shown.
  • the att- 5 achment rings 8 are intended to be retained in place in the grooves by means of a cover 9 or the like, for example in the form of a circular disc 9 located in a recess 10 and intended to be fixed by through bolts (not shown).
  • the cover 9 is not shown in Fig. 1 and 0 is indicated by dashed line in Fig. 2.
  • a chain 11 can be attached directly to the attachment ring 8, but according to a preferred embodiment acoupl ⁇ ing ring 12 is provided to connect the ring 8 and chain 11 and to extend through the ring 8 and one link 5 13 of the chain 11.
  • the grooves 3 and rings 8,12 have substantially square cross-section, as shown in Fig. 1.
  • a device according to the invention takes up a.o. dyn-r amic strains and forces without detrimental bending
  • the said centre for example, can consist of two subst ⁇ antially , equal halves, which for example are assembled by bolts, and between which said grooves 3 are formed. In this case each half constitutes a "cover".
  • six grooves 3 are intended for six chains.
  • Three grooves are located in connection to one side of said centre, substantially as in Fig. 1, and three grooves are located in a corresponding way in connection to the other side of said centre.
  • the grooves are arranged so that the chains are distributed substantially uniformly about the circumference ' of said centre.
  • the grooves 3, chains are arranged in groups, each group compris ⁇ ing two adjacent grooves, one on the upper side and one on the lower side.
  • the division between the grooves in each group is smaller than 60°, for example 50-55°, and the division between the- groups in a corresponding way is greater than 60°, for example 70-65°.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Adornments (AREA)

Abstract

Un dispositif de fixation de chaînes (11) d'unités d'éclaircissement d'arbustes comprend une tête (1), un centre (1), de préférence sous la forme d'une plaque circulaire rotative dans le plan du dispositif, les chaînes (11) étant rattachées à la tête et balancées depuis la tête vers l'extérieur sensiblement dans ce plan. Le dispositif se caractérise en ce que ce centre (1) comprend de préférence des rainures identiques (3) aménagées dans ce plan, chaque rainure (3) s'ouvrant en deux endroits (5, 6) à la périphérie (4) de ce centre et s'étendant suivant un arc (7) lequel fait partie d'un arc circulaire (7) entre lesdits endroits (5, 6). Dans chaque rainure (3) une bague d'attache (8) d'une chaîne (11) est montée et se projette partiellement vers l'extérieur de la périphérie (4) du centre (1), et les rainures (3) sont partiellement recouvertes par un couvercle (9) ou autre organe semblable.
PCT/SE1982/000297 1982-09-24 1982-09-24 Dispositif de fixation Ceased WO1984001085A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/SE1982/000297 WO1984001085A1 (fr) 1982-09-24 1982-09-24 Dispositif de fixation
FI842090A FI76475C (fi) 1982-09-24 1984-05-24 Faestanordning.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1982/000297 WO1984001085A1 (fr) 1982-09-24 1982-09-24 Dispositif de fixation

Publications (1)

Publication Number Publication Date
WO1984001085A1 true WO1984001085A1 (fr) 1984-03-29

Family

ID=20345780

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1982/000297 Ceased WO1984001085A1 (fr) 1982-09-24 1982-09-24 Dispositif de fixation

Country Status (2)

Country Link
FI (1) FI76475C (fr)
WO (1) WO1984001085A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3616072A1 (de) * 1986-05-13 1987-11-19 Jobst Gmbh G & E Verfahren und vorrichtung zum bearbeiten von bepflanzbaren boeden, insbesondere von waldboeden
FR2606249A1 (fr) * 1986-11-10 1988-05-13 Freymouth Joel Outil de debroussaillement
FR2618974A1 (fr) * 1987-08-07 1989-02-10 Carestia Jean Louis Outil de coupe a chaines
FR2651089A1 (fr) * 1989-08-25 1991-03-01 Decostanzi Arnold Perfectionnements apportes aux tetes de debrouissailleuses portatives.
CN114904143A (zh) * 2022-05-19 2022-08-16 四川君健万峰医疗器械有限责任公司 一种头戴式经颅磁刺激线圈装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE122016C (fr) *
US994865A (en) * 1911-02-20 1911-06-13 Herbert Morris Lifting apparatus.
US1069573A (en) * 1912-10-11 1913-08-05 Arthur V O'neal Chain-clamp.
US3505800A (en) * 1967-05-04 1970-04-14 Hesston Of Delaware Inc Cutter assembly for a flail-type mower
US3527038A (en) * 1968-08-26 1970-09-08 Hesston Of Delaware Inc Quick-change flail blade
DK127944B (da) * 1971-07-05 1974-02-11 R Pihkala Apparat til rydning af stødskudskov og lignende vegetation.
SE418045B (sv) * 1975-09-05 1981-05-04 Masonite Ab Rojningsaggregat

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE122016C (fr) *
US994865A (en) * 1911-02-20 1911-06-13 Herbert Morris Lifting apparatus.
US1069573A (en) * 1912-10-11 1913-08-05 Arthur V O'neal Chain-clamp.
US3505800A (en) * 1967-05-04 1970-04-14 Hesston Of Delaware Inc Cutter assembly for a flail-type mower
US3527038A (en) * 1968-08-26 1970-09-08 Hesston Of Delaware Inc Quick-change flail blade
DK127944B (da) * 1971-07-05 1974-02-11 R Pihkala Apparat til rydning af stødskudskov og lignende vegetation.
SE418045B (sv) * 1975-09-05 1981-05-04 Masonite Ab Rojningsaggregat

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3616072A1 (de) * 1986-05-13 1987-11-19 Jobst Gmbh G & E Verfahren und vorrichtung zum bearbeiten von bepflanzbaren boeden, insbesondere von waldboeden
FR2606249A1 (fr) * 1986-11-10 1988-05-13 Freymouth Joel Outil de debroussaillement
FR2618974A1 (fr) * 1987-08-07 1989-02-10 Carestia Jean Louis Outil de coupe a chaines
FR2651089A1 (fr) * 1989-08-25 1991-03-01 Decostanzi Arnold Perfectionnements apportes aux tetes de debrouissailleuses portatives.
CN114904143A (zh) * 2022-05-19 2022-08-16 四川君健万峰医疗器械有限责任公司 一种头戴式经颅磁刺激线圈装置

Also Published As

Publication number Publication date
FI842090A0 (fi) 1984-05-24
FI842090L (fi) 1984-05-24
FI76475C (fi) 1988-11-10
FI76475B (fi) 1988-07-29

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