BE1003786A4 - Chain drive system specific to lopping heads after cutting - Google Patents
Chain drive system specific to lopping heads after cutting Download PDFInfo
- Publication number
- BE1003786A4 BE1003786A4 BE8900118A BE8900118A BE1003786A4 BE 1003786 A4 BE1003786 A4 BE 1003786A4 BE 8900118 A BE8900118 A BE 8900118A BE 8900118 A BE8900118 A BE 8900118A BE 1003786 A4 BE1003786 A4 BE 1003786A4
- Authority
- BE
- Belgium
- Prior art keywords
- chain
- drive system
- contact
- heads
- house
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
- B27B25/04—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed chains or belts
-
- 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
- A01G23/095—Delimbers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The system consists of a rolling track formed by rollers (1) on which achain of links (2) like an articulated chain is free to slide, in which thetop part (3') of the links (3) is hollow in the middle as in a conventionalchain, whereas the lower part (3") is flat over its entire length. All links(3) in the chain of links (2) form a plane lower surface.<IMAGE>
Description
<Desc/Clms Page number 1>
Système d'entraînement par chaîne, spécifique aux têtes d'ébranchage après abattage.
La présente invention est relative aux machines conçues pour ébrancher Les arbres en fôret directement après L'abattage et a pour objet un système d'entraînement par chaîne spécifique à une tête d'ébranchage teLLe que décrite dans La demande de brevet BE-8800878.
Avec une tête d'ébranchage suivant Ladite demande de brevet on a utiLisé comme système d'entraînement par chaîne de L'arbre une chaîne à maiLLons ou chaîne GaLLe couLissant Le Long d'une pLaque métaLLique Lisse, avec Les maiLLons symétriques par rapport à Leur axe LongitudinaL et avec La partie inférieure d'un maiLLon identique à sa partie supérieure. Un teL système d'entraînement récLame un coupLe important au niveau des moteurs du fait du frottement provoquant usure et échauffement des pièces en contact.
Des essais ont aLors été effectués sur une tête à ébrancher avec une chaîne cLassique mais s'appuyant sur des gaLets. Ici encore, on s'est trouvé devant une usure prématurée des maiLLons de La chaîne et aussi des paliers des gaLets.
<Desc/Clms Page number 2>
Pour obvier à ces inconvénients iL a paru avantageux suivant L'invention de créer un système d'entraînement caractérisé en ce qu'il consiste en un chemin de roulement formé par des gaLets Libres, sur LequeL couLisse une chaîne à maiLLons du type chaîne GaLLe, dont La partie supérieure des maiLLons est creusée comme dans une chaîne classique mais dont La partie inférieure est pLate sur toute sa Longueur.
Pour mieux comprendre L'invention celle-ci est décrite maintenant pLus en détaiL sur La base du dessin annexé, à titre d'exempLe uniquement, montrant une vue en éLévation d'une portion du système d'entraînement suivant L'invention.
Le système d'entraînement comporte un chemin de roulement formé par des galets Libres 1, montés sur rouLements.
Sur ce chemin de roulement coulisse une chaîne à maiLLons 2 du type chaîne GaLLe à axe LongitudinaL XX'. La partie supérieure 3'des maiLLons 3 est creusée en son mi Lieu comme dans une chaîne cLassique, tandis que La partie inférieure 3"est pLate sur toute sa Longueur, de teLLe manière que L'ensembLe des maiLLons 3 de La chaîne 2 forme une surface inférieure pLane.
Un contact sur deux entre gaLet 1-maiLLon 3-arbre à ébrancher 4 se fait selon un même axe transversal, c'est-à-dire que se confondent L'axe de pression P de L'arbre, L'axe transversaL YY'du maiLLon 3 et L'axe transversal ZZ'du galet 1.
L'autre contact galet-maillon s'effectue au centre d'un maiLLon, La pression P de L'arbre agissant symétriquement de part et d'autre de ce contact et toujours dans Les axes YY'de ce même maiLLon.
<Desc/Clms Page number 3>
Ce processus se reproduit sans cesse, puisque l'avancement de l'arbre lors de L'ébranchage s'effectue par un groupe de deux trains de chaînes sans fin soumis à un mouvement de rotation et disposés de part et d'autre de L'arbre.
Avec un système d'entraînement suivant L'invention on constate un gain de rendement de 30 à 40 % avec diminution de frottement, diminution de L'usure des pièces en contact, diminution de L'échauffement et moindre couple au niveau des moteurs.
<Desc / Clms Page number 1>
Chain drive system, specific to delimbing heads after felling.
The present invention relates to machines designed for delimbing trees in the forest directly after felling and relates to a chain drive system specific to a delimbing head such as that described in patent application BE-8800878.
With a delimbing head according to said patent application, a shaft chain or gaLL chain running along a smooth metal plate was used as the chain drive system of the shaft, with the shafts symmetrical with respect to their Longitudinal axis and with the lower part of a house identical to its upper part. Such a drive system requires significant damage to the motors due to the friction causing wear and overheating of the parts in contact.
Tests were then carried out on a head to be branched off with a conventional chain, but using lugs. Here again, we were faced with premature wear of the chain huts and also the bearings of the rollers.
<Desc / Clms Page number 2>
In order to overcome these drawbacks, it seemed advantageous according to the invention to create a drive system characterized in that it consists of a raceway formed by free gaLets, on which a chain with gAllons of the GaLLe chain type, whose upper part of the house is hollowed out as in a conventional chain but whose lower part is flat over its entire length.
To better understand the invention, this is now described in greater detail on the basis of the appended drawing, by way of example only, showing an elevation view of a portion of the drive system according to the invention.
The drive system comprises a raceway formed by Free rollers 1, mounted on bearings.
On this raceway slides a chain with 2 HOOKS of the GaLLe chain type with a Longitudinal axis XX ′. The upper part 3 ′ of the housings 3 is hollowed out in its middle place as in a conventional chain, while the lower part 3 "is flat over its entire length, in such a way that the whole of the housings 3 of the chain 2 forms a pLane bottom surface.
One contact out of two between gaLet 1-May 3 arbre tree to be branched 4 is made along the same transverse axis, that is to say that the pressure axis P of the shaft merge, the transverse axis YY ' of house 3 and the transverse axis ZZ of roller 1.
The other roller-link contact is made in the center of a house, The pressure P of the shaft acting symmetrically on either side of this contact and always in the axes YY 'of this same house.
<Desc / Clms Page number 3>
This process is constantly reproduced, since the advancement of the tree during delimbing is carried out by a group of two trains of endless chains subjected to a rotational movement and arranged on either side of L ' tree.
With a drive system according to the invention there is a gain in efficiency of 30 to 40% with reduction in friction, reduction in wear of the parts in contact, reduction in heating and less torque at the motors.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE8900118A BE1003786A4 (en) | 1989-02-06 | 1989-02-06 | Chain drive system specific to lopping heads after cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE8900118A BE1003786A4 (en) | 1989-02-06 | 1989-02-06 | Chain drive system specific to lopping heads after cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE1003786A4 true BE1003786A4 (en) | 1992-06-16 |
Family
ID=3884002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE8900118A BE1003786A4 (en) | 1989-02-06 | 1989-02-06 | Chain drive system specific to lopping heads after cutting |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE1003786A4 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB324672A (en) * | 1928-10-31 | 1930-01-31 | Arnold Redler | Improvements in links for conveyor and like chains |
| US2862605A (en) * | 1953-07-01 | 1958-12-02 | Doughboy Ind Inc | Conveyor chain |
| US3718167A (en) * | 1972-01-24 | 1973-02-27 | Nicholson Mfg Co | Limb stub-cutting mechanism |
| FR2500356A2 (en) * | 1979-03-20 | 1982-08-27 | Brun Georges | Double bladed wood saw - has blade spacing adjustable and wood advanced driven by endless chain |
| DE3311227A1 (en) * | 1983-03-28 | 1984-10-04 | Wabco Westinghouse Steuerungstechnik GmbH & Co, 3000 Hannover | Chain conveyor |
| EP0287865A2 (en) * | 1987-04-18 | 1988-10-26 | Hans Hundegger | Machine tool for working timber in logs or the like |
-
1989
- 1989-02-06 BE BE8900118A patent/BE1003786A4/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB324672A (en) * | 1928-10-31 | 1930-01-31 | Arnold Redler | Improvements in links for conveyor and like chains |
| US2862605A (en) * | 1953-07-01 | 1958-12-02 | Doughboy Ind Inc | Conveyor chain |
| US3718167A (en) * | 1972-01-24 | 1973-02-27 | Nicholson Mfg Co | Limb stub-cutting mechanism |
| FR2500356A2 (en) * | 1979-03-20 | 1982-08-27 | Brun Georges | Double bladed wood saw - has blade spacing adjustable and wood advanced driven by endless chain |
| DE3311227A1 (en) * | 1983-03-28 | 1984-10-04 | Wabco Westinghouse Steuerungstechnik GmbH & Co, 3000 Hannover | Chain conveyor |
| EP0287865A2 (en) * | 1987-04-18 | 1988-10-26 | Hans Hundegger | Machine tool for working timber in logs or the like |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: S.A. FORICOM Effective date: 19960228 |