FR2840508A1

FR2840508A1 - Tree stump extractor for use in areas with difficult access comprises narrow attachment with blade fitted to end of machine manipulator arm

Info

Publication number: FR2840508A1
Application number: FR0206884A
Authority: FR
Inventors: Jean Louis Galharret
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-05
Filing date: 2002-06-05
Publication date: 2003-12-12
Anticipated expiration: 2022-06-05
Also published as: FR2840508B1

Abstract

The stump extractor, for use on a machine (10) with a manipulator arm (12), consists of a narrow elongated implement (20) with a blade (22) and fixings (28) for attaching it to the arm. The blade is thick and strong with toothed edges (24), and is fitted with a stiffener (23) lying perpendicular to its plane. Its fixings consist of a plate with holes for bolts and an automatic locking plate (18).

Description

coupe courbes dans le tunnel (3).cut curves in the tunnel (3).

i DISPOSITIF bE bESSOUCHAGE, NOTAMMENT UTIUSABLE EN bES UEUX DIFFICILES O'ACCES ET PROCEDE bE MISE EN OEUVRE La presente invent ion concerne un d isposit if de dessouchage, notamment utilisable en des lieux difficiles d'acces. L'invention couvre aussi la mise en i DEVICE BESOUCHAGE, ESPECIALLY USEFUL IN BES DIFFICULT ONES OF ACCESS AND METHOD bE IMPLEMENTATION The present invention relates to a device for stump removal, in particular usable in places difficult to access. The invention also covers the implementation

ocuvre de ce dispositif.work of this device.

Dans des terrains degages tels que des forets, les arbres vent abattus, les chablis vent degages et lorsqu'il convient de retirer les souches qui subsistent, on recourt a des engine de forte puissance, adaptee a lteffort necessaire pour retirer la souche en force. Pour cela, on utilise des pelles mecaniques avec un In cleared areas such as forests, felled trees, windfall windbreaks and when it is necessary to remove the remaining stumps, use is made of high power engines, adapted to the effort necessary to remove the stump in force. For this, we use mechanical shovels with a

croc a souche.stock hook.

Lorsque la puissance est encore insuffisante, a ['aide du godet et par quelques manceuvres, I'operateur creuse et procede a l'arrachage des plus grosses racines. Ensuite, il souleve la souche et les racines residuelles vent arrachees simultanement. Ceci est possible en fores ou en terrain degage. En effet, lors de ces operations d'arrachage, on constate que les consequences de ces interventions se propagent When the power is still insufficient, using the bucket and a few maneuvers, the operator digs and pulls out the larger roots. Then he lifts the stump and the residual roots are blown off simultaneously. This is possible in drills or open ground. Indeed, during these grubbing operations, we see that the consequences of these interventions spread

a l'interieur d'un grand perimetre autour de la souche. inside a large perimeter around the stump.

Tout d'abord, il faut creuser le terre et deposer par cote ce qui est retire au godet. Ensuite, en tirant sur les racines, on s'apergoit que la terre est soulevee First, dig the earth and deposit by dimension what is removed from the bucket. Then, by pulling on the roots, we see that the earth is lifted

jusqu'd plusieurs metres du cocur de la souche. up to several meters from the cocur of the strain.

Enfin, meme si le trou qui subsiste apres le retrait de la souche est rebouche au Finally, even if the hole that remains after the removal of the stump is filled in with

godet, il lt est sommairement car dans un terrain degage lors d' une operation bucket, it is basically because in a clear area during an operation

ponctuelle ou dans une fores, on ne cherche pas a niveler le sol parfaitement. Si un nivellement venait a etre necessaire, d'autres engine de grande taille point or in a drill, we do not try to level the ground perfectly. If leveling is required, other large engines

permettent alors un travail efficace et de qualite. allow efficient and quality work.

ii

Tout ceci n'est possible que dans le cas d'un espace libre important. All this is only possible in the case of a large free space.

On conna^'t aussi un moyen de destruction de souches qui est efficace et qui ne There is also known a means of destruction of strains which is effective and which does not

demande que peu de place autour de la cite souche. requires little space around the root city.

lI stagit d'un outil avec une pointe foreuse destinee d guider des lames entra^'nees en rotation d grande vitesse, solidaires de cette pointe foreuse. Ces lames ont un bo rd affute et attaquent la souche par une penetration vert ica le dans l' axe du tronc. Comme le bois est travaille dans le sens perpendiculaire au fil, les lames generent des copeaux de petites dimensions. Ainsi, I'outil permet de grignoter la souche, en partant du cccur, sans generer de degradations He trainees a tool with a drilling point intended to guide blades driven in rotation at high speed, integral with this drilling point. These blades have a sharp edge and attack the stump by a green penetration into the axis of the trunk. As the wood is worked in the direction perpendicular to the wire, the blades generate small chips. Thus, the tool makes it possible to nibble on the strain, starting from the heart, without generating degradations

peripheriques du terrain.periphery of the land.

Neanmoins, un tel outil presente plusieurs inconvenients. Tout d'abord, il faut le mouvoir et comme tout outil anime, il faut prevoir un moteur independant. Comme il faut un couple important, ce moteur est generalement hydraulique puisque lton dispose d'une source de fluide sous pression sur les engine de chantier. Le However, such a tool has several drawbacks. First of all, you have to move it and like any animated tool, you have to provide an independent motor. As a large torque is required, this engine is generally hydraulic since lton has a source of pressurized fluid on the site engines. The

montage est necessairement coGteux.mounting is necessarily expensive.

Ensu ite, cet engin do it beneficier de protect ions peri pheriques i mportantes Subsequently, this device must benefit from important peripheral protection.

puisqu'il s'agit d'un engin coupant anime. since it is an animated cutting machine.

Enfin, on ne peut pas dire qutil s'agisse d'un dessouchage puisque tous les departs de racines de la souche restent en place. En effet, le diametre de l'outil est constant et comme il faut qu'il soit guide, si le diametre est trop petit par rapport a celui de la souche, la partie centrale senle est attaquee et retiree, mais il subsiste generalement un anneau peripherique qu'il faut finir avec d'autres moyens. be plus, il ne faut pas non plus penetrer trop profond dans la souche selon l'axe vertical car on attaque alors la terre avec les cailloux, ce qui Finally, it cannot be said that it is a stump removal since all the departures from the roots of the strain remain in place. Indeed, the diameter of the tool is constant and as it must be guided, if the diameter is too small compared to that of the stump, the central part only is attacked and withdrawn, but there generally remains a ring peripheral that must be ended with other means. be more, one should not either penetrate too deep in the stump according to the vertical axis because one attacks then the ground with the pebbles, which

provoque une degradation rapide des parties affutees. causes rapid degradation of the sharpened parts.

Le retrait de la souche est done imperatif pour etre certain de pouvoir disposer d'un terrain propre. C'est en effet le seul moyen pour degager la zone sur une profondeur suffisante pour replanter, reboucher ou encore implanter un The removal of the stump is therefore imperative to be certain of being able to have clean land. It is in fact the only way to clear the area to a depth sufficient to replant, plug in or even set up a

ouvrage par exemple.book for example.

Or dans certaines circonstances, il faut pouvoir retirer une souche dans un lieu exigu, avec eventuellement des constructions environnant ladite souche ou simplement la presence d'autres arbres et/ou vegetaux. C'est notamment le cas que rencontrent les jardiniers qui entretiennent des However, in certain circumstances, it is necessary to be able to remove a strain in a cramped place, with possibly constructions surrounding said strain or simply the presence of other trees and / or plants. This is particularly the case encountered by gardeners who maintain

pares et jardins.parks and gardens.

Les souches vent generalement de dimensions petites a moyennes mais certaines especes ont un reseau racinaire important, ce qui interdit une traction pure et The strains are generally small to medium in size but some species have a large root network, which prevents pure traction and

simple sur la souche.simple on the strain.

Par ailleurs, sur le marche, il existe des engine polyvalents dits "mini pelles" qui vent sur roues mais de preference sur chenilles pour diminuer la pression au sol et qui permettent un passage meme sur des sols delicate. Ces mini pelles disposent entre autres d'un bras hydraulique, de godets et pour certaines d'une interface de liaison mecanique a verrouillage automatique de ces outils sur le bras. Aussi, la presente invention propose un dispositif prevu pour etre monte sur un engin de chantier tel qu'une mini pelle par exemple gui apporte une solution au In addition, on the market, there are multipurpose engines called "mini excavators" which wind on wheels but preferably on tracks to reduce the ground pressure and which allow passage even on delicate soils. These mini excavators have, among other things, a hydraulic arm, buckets and, for some, a mechanical link interface with automatic locking of these tools on the arm. Also, the present invention provides a device intended to be mounted on a construction machine such as a mini excavator for example mistletoe provides a solution to

dessouchage delicat.delicate stump removal.

Ce dispositif est d' une tres grande fiabilite en conditions normales d' utilisation This device is very reliable under normal conditions of use.

car il est statique en lui-meme, de plus, il peut etre aisement repare. because it is static in itself, moreover, it can be easily repaired.

Compte tenu de son prix, il peut etre fabrique en plusieurs dimensions pour Given its price, it can be manufactured in several dimensions for

offrir une gamme en fonction des travaux. offer a range depending on the work.

Il ne requiert aucun amenagement specifique et notamment ne necessite aucune It does not require any specific development and in particular does not require any

prise de puissance.power take-off.

Le dispositif selon la presente invention est maintenant decrit en detail selon un The device according to the present invention is now described in detail according to a

mode de realisation preferential, non limitatif. Cette description intervient en preferential, nonlimiting embodiment. This description comes in

regard du dessin annexe qui porte une figure unique representant, de fapon look at the annexed drawing which carries a single figure representing, of fapon

schematique et en perspective, le dispositif selon ['invention, en service. schematic and in perspective, the device according to the invention, in service.

Sur cette figure unique, ltengin 10 representee est avantageusement une mini pellet Ce type d'engin presente, pour donner un ordre dtidee, une largeur de 1,50 d 2,00 metres avec une puissance de 2 d 3 tonnes. Cet engin comprend un bras 12 articule, manccuvre d ['aide de verins 14. Ces verins vent manccuvres par l'operateur qui, par combinaison des differentes In this single figure, ltengin 10 represented is advantageously a mini pellet This type of machine presents, to give a determined order, a width of 1.50 d 2.00 meters with a power of 2 d 3 tonnes. This machine comprises an articulated arm 12, maneuvered with the aid of jacks 14. These jacks are operated by the operator who, by combination of the different

actions possibles, peut obtenir quasiment tous les mouvements. possible actions, can get almost any movement.

Neanmoins, ces mouvements vent rents mais vent realises en puissance. Nevertheless, these movements are windy but windy in power.

A l'extremite de ce bras, on trouve generalement des godets 16, dont un At the end of this arm, there are generally buckets 16, one of which

exemplaire est represente, reposant sur le sol. exemplary is represented, resting on the ground.

Ces godets peuvent etre larges, normaux ou etroits, suivant les types de travaux These buckets can be wide, normal or narrow, depending on the type of work

d realiser.to realize.

Afin de pouvoir travailler aisement, rapidement et avec un senl operateur, il existe des platines 18 de fixation d verrouillage automatique. be telles platines vent fixces en bout de bras et comprennent de fa,con connue un crochet avec lequel l'operateur vient saisir le godet ou ltoutil retenu. Ensuite, il verrouille d ['aide d'un verin par exemple, ltoutil sur l'extremite du bras, le rendant ainsi In order to be able to work easily, quickly and with an operator, there are plates 18 for fixing the automatic locking. be such wind plates fixed at the end of the arm and comprise in known manner a hook with which the operator comes to grip the bucket or the tool retained. Then, it locks with a jack for example, the tool on the end of the arm, making it so

solidaire de cette extremite du bras. Il existe differents modes de realisation secured to this end of the arm. There are different embodiments

dons le commerce.donate to trade.

Un tel changement d'outils s'opere sur une duree de ltordre de la minute. Such a tool change takes place over a period of the order of a minute.

Pour mettre en service de telles platines, il suffit d'equiper le bras definitivement d'une partie de la platine et de rapporter sur chaque outil, en To put such plates into service, it suffices to equip the arm definitively with a part of the plate and to attach to each tool,

ltoccurrence les godets, une partie conjuguee de cette platine. ltoccurrence the buckets, a combined part of this plate.

Le dispositif selon i' invention est represente sur cette meme figure. Il The device according to the invention is represented in this same figure. he

comprend un corps 20 de forme allonge et etroit, constituant une lame 22. comprises a body 20 of elongated and narrow shape, constituting a blade 22.

Cette lame est de forte epaisseur pour lui conferer une tres grande rigidite. This blade is very thick to give it very great rigidity.

Eventuellement, un raidisseur 23 est rapporte perpendiculairement au plan de la lame. tees crantages 24 vent menages sur la peripherie et plus particulierement sur la partie inferieure. be tels crantages peuvent etre consideres comme des dents 26. Neanmoins, un affutage au sens propre du terme n'est pas necessaire. Il ameliore ['action qui va etre decrite ciapres mais genere une contrainte d'affutage. 0 Il est en outre prevu des moyens 28 de fixation du corps 20 du dispositif sur le Optionally, a stiffener 23 is attached perpendicular to the plane of the blade. notched tees 24 wind housed on the periphery and more particularly on the lower part. be such teeth can be considered teeth 26. However, sharpening in the proper sense of the term is not necessary. It improves the action which will be described below but generates a sharpening constraint. 0 Means 28 are also provided for fixing the body 20 of the device to the

bras de l'engin.arm of the craft.

Ces moyens 28 de fixation peuvent etre tres simples. These fixing means 28 can be very simple.

bans un mode de realisation basique, ils comprennent une plaque solidaire de la lame 22 et des pergages menages dans le godet support, des vis assurant la in a basic embodiment, they include a plate secured to the blade 22 and cleaning holes in the support bucket, screws ensuring the

1 5 liaison.1 5 link.

De fac, on avantageuse, cette plaque est so lidarisee au dos du godet. So, advantageously, this plate is so lidarized on the back of the bucket.

bans un mode de realisation plus perfectionne, represente sur la figure unique, la lame 22 est solidaire de la partie d'une platine 18 de fixation a verrouillage in a more sophisticated embodiment, shown in the single figure, the blade 22 is integral with the part of a plate 18 for locking fixing

auto mat i que.auto mat i que.

Dans ce cas, le dispositif selon la presente invention est dispose au bout du bras In this case, the device according to the present invention is arranged at the end of the arm

comme un godet ou tout autre outil.like a bucket or any other tool.

La mise en ccuvre du dispositif selon la presente invention est simple. The implementation of the device according to the present invention is simple.

Le corps etant solidarise au bras, l'operateur place la lame 22, sensiblement The body being secured to the arm, the operator places the blade 22, substantially

verticalement voire avec une legere incidence par rapport au sol. vertically or even with a slight angle to the ground.

Ensuite, il manocuvre le bras pour faire penetrer la lame dans le sol et realise une decoupe a la peripherie d'une souche 30. Le trajet 32 est fonction de la place disponible et devra etre realise au plus simple, suivant un carre par exemple ou un cercle dans le cas le plus sophistique comme montre sur la figure unique. La lame 22 ainsi manaeuvree provoque la decoupe des racines de diametre Then, it maneuvers the arm to penetrate the blade into the ground and performs a cut at the periphery of a stump 30. The path 32 is a function of the space available and should be carried out as simple as possible, following a square for example or a circle in the most sophisticated case as shown in the single figure. The blade 22 thus maneuvered causes the cutting of the roots of diameter

important et assure la rupture des racines plus petites. important and ensures the rupture of the smaller roots.

La lame n'assure pas une decoupe grace au tranchant de la lame qui nten possede pas necessairement, mais surtout grace d la press ion exercee par la lame sur chaque racine, cette pression importante provenant de la capacite du bras The blade does not provide a cut thanks to the cutting edge of the blade which does not necessarily have, but especially thanks to the pressure exerted by the blade on each root, this significant pressure coming from the capacity of the arm

hydraulique de la mini pelle ou de l'engin equipe. hydraulics of the mini excavator or the equipped machine.

Les crantages ou dents n'ont pas un effet de tranchant avec des facettes affutees mais simplement assurent le bon accrochage sur chaque racine et provoquent d chaque mouvement et sous la pression existante un arrachage d'une The notches or teeth do not have a cutting effect with sharp facets but simply ensure good attachment on each root and cause with each movement and under existing pressure a tearing of a

fraction de bois.fraction of wood.

Apres decoupe de toutes les racines ou au moins d'une partie des racines, on procede d l'arrachage de la souche proprement cite. A cet effet, soit I'operateur utilise le godet dont le bras est equipe et qui porte la lame dans la version basique, soit il depose le dispositif selon la presente invention et fixe a ltextremite du bras, en lieu et place, un godet, grace d un eventuel verrouillage After cutting all the roots or at least part of the roots, the actual stump is uprooted. To this end, either the operator uses the bucket with the arm fitted and which carries the blade in the basic version, or he deposits the device according to the present invention and fixes a bucket at the end of the arm, thanks to a possible lock

auto mat i que.auto mat i que.

On constate que les avantages du dispositif selon la presente invention vent nombreux. Tout d'abord, compte tenu du tres faible encombrement du dispositif et de la facon dont il est manccuvre, I'operateur peut intervenir dans des lieux It can be seen that the advantages of the device according to the present invention are numerous. First of all, given the very small footprint of the device and the way it is operated, the operator can intervene in places

tres exigus, avec un espace tres reduit autour de la souche. very cramped, with a very small space around the stump.

t)e plus, la lame travail le en avougle et l ' operateur nt a pas a se preoccuper des positions des racines et il ne lui faut aucunement degager la terre autour de la t) moreover, the blade works by blinding it and the operator does not have to worry about the positions of the roots and he must in no way clear the ground around the

souche pour disposer d'un champ de vision. strain to have a field of vision.

Quant d la lame, elle ne necessite pas d'affutage pour travailler correctement et As for the blade, it does not require sharpening to work properly and

pour assurer un tronconnage.to ensure cutting.

La lame n'est pas animee par une motorisation propre mais simplement The blade is not driven by a clean motor but simply

deplacee d ['aide du bras qui est concu pour cela. using the arm which is designed for this.

On salt qu'il existe aussi des cas particuliers comme les racines pivots. Il stagit d'une racine issue de la souche mais poussant verticalement, au droit de la souche. Dans ce cas, le dispositif selon la presente invention permet egalement un travail de qualite. Il suffit pour cela que ltoperateur incline la lame pour assurer un tron,connage, total ou au moins partiel de cette racine, facilitant ainsi le dessouchage. L'encombrement du dispositif est egalement reduit si bien qu'il peut etre We know that there are also special cases such as the pivot roots. It stems from a root stemming from the stump but growing vertically, in line with the stump. In this case, the device according to the present invention also allows quality work. It is sufficient for this that the operator inclines the blade to ensure a truncation, connage, total or at least partial of this root, thus facilitating stump removal. The size of the device is also reduced so that it can be

embarque aisement avec les godets et autres equipements. embarks easily with buckets and other equipment.

L'operateur peut meme prevoir plusieurs longueurs de lames lorsqu'il y a The operator can even foresee several blade lengths when there is

differentes interventions a assurer. different interventions to ensure.

Afin d'augmenter la duree de vie de la lame, la zone de crantage qui est la zone soumise d la pression et qui vient au contact des parties de racines d debiter, peut subir avantageusement un traitement specifique destine d renforcer sa In order to increase the life of the blade, the notching zone which is the zone subjected to pressure and which comes into contact with the parts of the roots to be cut, can advantageously undergo a specific treatment intended to reinforce its

resistance d l'usure.wear resistance.

Apres decoupe des racines, la souche est retiree d ['aide d'un godet. After cutting the roots, the stump is removed using a bucket.

Une fois la souche retiree, on constate qu'elle presente ia portion basse du tronc d laquelle vent liees des naissances de racines qui, pour les plus grosses vent tranchees, de fac on surprenante puisque la lame ne so it pas affutee, tand is Once the stump is removed, we see that it presents the lower portion of the trunk from which the wind is linked to births of roots which, for the larger wind slices, surprisingly since the blade is not sharpened, tand is

que les plus petites vent sectionnees en force. only the smallest wind severed.

Lorsque la souche est soulevee avec le godet, les degradations aux alentours vent tres limitees, voire inexistantes, puisque les prolongations des racines When the stump is lifted with the bucket, the damage to the surroundings is very limited, even non-existent, since the extensions of the roots

restent dans le sol.stay in the ground.

Le dispositif selon l' invention permet done des interventions en bordure de construction, au milieu d'une zone portant un revetement bitumine ou dalle par example, sons provoquer de degats et done sons necessiter une refection. II The device according to the invention therefore allows interventions at the edge of construction, in the middle of an area carrying a bituminous coating or slab for example, to cause damage and therefore to require repair. II

suffit de reboucher le volume laisse vacant par le retrait de la souche. just fill in the volume left vacant by removing the stump.

Claims

1. stump removal device, in particular usable in places that are difficult to access and designed to be ossified to a machine (10) fitted with a manocover arm (12), characterized in that it comprises a body (20) of elongated and narrow shape, constituting a blade (22), provided with means (28) for fixing on the arm (12) of ltengin (10).

2. Stump removal device according to claim 1, characterized in that the

blade (22) is very thick.

3. Stump removal device according to claim 1 or 2, characterized in that the blade (22) comprises a stiffener (23), attached perpendicular to the plane

0 of said blade.

4. device according to any one of the preceding claims, characterized

in that the blade (22) comprises notches (24), formed on the periphery.

5. stopping device according to claim 4, characterized in that the

notches form teeth (26).

6. stump removal device according to any one of claims

previous, characterized in that the fixing means (28) comprise a plate secured to the blade (22) and to the cages, housed in a support bucket,

integral with the arm, and screws ensuring the connection of the plate on said bucket (16).

7. stump removal device according to claim 6, characterized in that the

plate is secured to the back of the bucket (16).

8. stopping device according to any one of the claims

previous, characterized in that the blade (22) is integral with a plate (18)

fixing system with automatic locking.

-

9. stump removal device according to any one of claims

previous, characterized in that the blade (22) has undergone a surface treatment.

Method for putting the device into operation according to any one of the

previous claims, characterized in that it consists of:

- maneuver the arm of the machine fitted with the blade (22) substantially vertically or slightly inclined over the entire periphery (32) of the stump (30) by exerting a significant force thanks to this arm, in order to cut the roots, and a - exert a traction on the stump to remove it from the ground while allowing to remain