EP0592325B1 - Trenching apparatus for digging deep trenches with cutting drums mounted on a chassis - Google Patents
Trenching apparatus for digging deep trenches with cutting drums mounted on a chassis Download PDFInfo
- Publication number
- EP0592325B1 EP0592325B1 EP93402484A EP93402484A EP0592325B1 EP 0592325 B1 EP0592325 B1 EP 0592325B1 EP 93402484 A EP93402484 A EP 93402484A EP 93402484 A EP93402484 A EP 93402484A EP 0592325 B1 EP0592325 B1 EP 0592325B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chassis
- pivoting
- frame
- vertical axis
- branch
- 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.)
- Expired - Lifetime
Links
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/22—Component parts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/22—Component parts
- E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
- E02F3/245—Digging wheels; Digging elements of wheels; Drives for wheels with digging elements mounted movable relative to the wheel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
- E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
Definitions
- the present invention relates to an apparatus for digging in the floor of deep trenches using milling drums mounted on a chassis.
- Such an apparatus is already known in FR-A-2,578,876.
- the length of cables separating the mast from the chassis is sufficient to allow the latter to be easily oriented in order to make it parallel to the trench that it is desired to make, even if the mast of the lifting machine is not not quite pointing in the right direction.
- the length of cables separating the mast from the chassis makes it impossible to pivot the latter around its vertical axis. . It is then necessary to move the lifting machine to position its mast precisely with respect to the trench to be made.
- the present invention aims to provide a simple and economical for the realization of trenches in the ground whose chassis is able to orient itself easily in the direction corresponding to that of the trench that we want to make.
- the apparatus according to the invention also has the great advantage power, without appreciably modifying the position of the lifting machine, make trenches according to angular paths, for example to make walls around the perimeter of the interior courtyard of a building.
- the subject of the present invention is an apparatus for carrying out of trenches in the ground of the type comprising a frame provided with drums milling at its lower part, characterized in that the chassis is supported at its upper part so that it can pivot around its vertical axis and in that it further comprises a flexible pipe by which the cuttings are raised to the surface, the end of said flexible pipe being arranged along said vertical axis of pivoting of the chassis and being able to pivot relative to said chassis.
- each of these flexible pipes connects to the non-pivoting upper part of the chassis by an elbow, the upper branch of which is directed upwards, and which pivots relative to the vertical axis of the latter, and whose lower branch, which is substantially horizontal, is connected to the end of a flexible pipe section the other end of which is preferably connected vertically to the pivoting part of the chassis, said section being able to pivot about its axis at at least one point of its length, the lower end of the flexible pipe section being horizontally offset from the vertical branch of the elbow.
- the horizontal parts of the elbows to which the flexible pipe sections are connected remain oriented substantially in the same direction, allowing the hoses to remain substantially parallel to each other.
- the apparatus of FIG. 1 comprises, in the known manner, a chassis 1 which supports two milling drums 2 at its lower part rotatable.
- the chassis 1 is suspended from the mast of a lifting device not represented by a muffle consisting of a multi-strand cable 3 and pulleys 4.
- the chassis 1 is capable of pivoting around its vertical axis 5 thanks to a ball bearing 6 housed between the part upper 7 of the chassis and the base 8 of the muffle, as can be seen in section cut away in Figure 1.
- a flexible pipe 9 for the removal of the cuttings ends at the chassis 1 along the vertical axis 5 of the latter, between the two pulleys 4 of the block.
- This pipe 9 is connected to the chassis via a not shown rotating joint which allows it not to undergo torsion during pivoting of the chassis.
- a plurality of flexible pipes 10 used to supply the device with energy hydraulic go down between the two pulleys 4 of the block to connect to the non-pivoting part of the chassis.
- Each of these pipes leads to the upper branch of a elbow fitting 11 which is mounted on the non-pivoting part of the chassis, so that it can pivot around the axis of its branch which is arranged vertically.
- the other branch of the elbow 11, which is horizontal, is connected to the upper end of a flexible pipe section 12 of which the lower end is vertically connected to the pivoting part of the frame.
- Each section 12 enters at 13 into the pivoting part of the frame.
- each section of flexible pipe 12 is connected to the horizontal branch of the elbow 11 so that it can pivot around its longitudinal axis, so that it does not undergo any twist when pivoting the chassis.
- each of the two elbows 11 to which the upper ends of the sections 12 is represented by a circle in FIG. 2.
- each elbow 11 pivots about the axis vertical of its upper branch.
- each section of pipe 12 ends vertically at 14 on the pivoting part of the chassis, forming a arc, as can be seen in Figure 3, where we have schematically shown in solid line 12 a section of pipe in the position of chassis which is shown in solid lines in FIG. 2, and in lines interrupted 12 'that same stretch in the chassis position which is shown in broken lines in Figure 2.
Description
La présente invention est relative à un appareil pour creuser dans le sol des tranchées de grande profondeur à l'aide de tambours de fraisage montés sur un châssis. Un tel appareil est déjà connus dans FR-A-2 578 876.The present invention relates to an apparatus for digging in the floor of deep trenches using milling drums mounted on a chassis. Such an apparatus is already known in FR-A-2,578,876.
On connaít déjà de tels appareils dans lesquels des tambours de fraisage entraínés en rotation dans des directions opposées sont montés sur un châssis, lui-même suspendu au mât d'un engin de levage par l'intermédiaire de câbles.We already know such devices in which drums milling rotated in opposite directions are mounted on a chassis, itself suspended from the mast of a lifting device by through cables.
Généralement, la longueur de câbles qui sépare le mât du châssis
est suffisante pour permettre d'orienter facilement ce dernier afin de le
rendre parallèle à la tranchée que l'on désire réaliser, même si le mât de
l'engin de levage n'est pas tout à fait orienté dans la bonne direction.
Par contre, dans le cas où l'on ne dispose, au-dessus de la tranchée, que
d'un espace limité en hauteur, la longueur de câbles séparant le mât du
châssis rend impossible le pivotement de ce dernier autour de son axe
vertical. Il est alors nécessaire de déplacer l'engin de levage pour
positionner son mât avec précision par rapport à la tranchée à réaliser.Generally, the length of cables separating the mast from the chassis is sufficient to allow the latter to be easily oriented in order to make it parallel to the trench that it is desired to make, even if the mast of the lifting machine is not not quite pointing in the right direction.
On the other hand, in the case where there is only a space limited in height above the trench, the length of cables separating the mast from the chassis makes it impossible to pivot the latter around its vertical axis. . It is then necessary to move the lifting machine to position its mast precisely with respect to the trench to be made.
La présente invention vise à fournir un appareil simple et économique pour la réalisation de tranchées dans le sol dont le châssis soit apte à s'orienter facilement dans la direction correspondant à celle de la tranchée que l'on désire réaliser.The present invention aims to provide a simple and economical for the realization of trenches in the ground whose chassis is able to orient itself easily in the direction corresponding to that of the trench that we want to make.
L'appareil selon l'invention présente en outre le grand avantage de pouvoir, sans modifier sensiblement la position de l'engin de levage, réaliser des tranchées selon des tracés angulaires, par exemple pour réaliser des parois sur le pourtour de la cour intérieure d'un bâtiment.The apparatus according to the invention also has the great advantage power, without appreciably modifying the position of the lifting machine, make trenches according to angular paths, for example to make walls around the perimeter of the interior courtyard of a building.
La présente invention a pour objet un appareil pour la réalisation de tranchées dans le sol du type comportant un châssis muni de tambours de fraisage à sa partie inférieure, caractérisé par le fait que le châssis est supporté à sa partie supérieure de manière à pouvoir pivoter autour de son axe vertical et en ce qu'il comprend en outre une conduite flexible par laquelle les déblais sont remontés à la surface, l'extrémité de ladite conduite flexible étant disposée selon ledit axe vertical de pivotement du châssis et pouvant pivoter par rapport audit châssis.The subject of the present invention is an apparatus for carrying out of trenches in the ground of the type comprising a frame provided with drums milling at its lower part, characterized in that the chassis is supported at its upper part so that it can pivot around its vertical axis and in that it further comprises a flexible pipe by which the cuttings are raised to the surface, the end of said flexible pipe being arranged along said vertical axis of pivoting of the chassis and being able to pivot relative to said chassis.
On comprend que, grâce à l'invention, on peut faire pivoter le châssis autour de son axe vertical, sans imposer de torsion aux câbles qui le supportent, ce qui permet de le positionner facilement dans la direction de la tranchée que l'on désire réaliser, même lorsque le tracé de la tranchée comporte des parties angulaires. We understand that, thanks to the invention, we can rotate the chassis around its vertical axis, without imposing a twist on the cables which support it, which makes it easy to position in the direction of the trench that we want to make, even when the layout of the trench has angular parts.
D'autres canalisations flexibles sont nécessaires à l'alimentation de l'appareil en énergie hydraulique, notamment pour les moteurs qui entraínent les tambours de fraisage en rotation, ainsi que pour la pompe de refoulement des déblais.Other flexible pipes are required to supply of the device in hydraulic energy, especially for motors which drive the milling drums in rotation, as well as for the repression of spoil.
Dans un mode de réalisation préféré de l'invention, chacune de ces canalisations flexibles se raccorde à la partie supérieure non pivotante du châssis par un coude dont la branche supérieure est dirigée vers le haut, et qui pivote par rapport à l'axe vertical de cette dernière, et dont la branche inférieure, qui est sensiblement horizontale, est raccordée à l'extrémité d'un tronçon de canalisation flexible dont l'autre extrémité est raccordée de préférence verticalement à la partie pivotante du châssis, ledit tronçon pouvant pivoter autour de son axe en au moins un point de sa longueur, l'extrémité inférieure du tronçon de canalisation flexible étant décalée horizontalement par rapport à la branche verticale du coude.In a preferred embodiment of the invention, each of these flexible pipes connects to the non-pivoting upper part of the chassis by an elbow, the upper branch of which is directed upwards, and which pivots relative to the vertical axis of the latter, and whose lower branch, which is substantially horizontal, is connected to the end of a flexible pipe section the other end of which is preferably connected vertically to the pivoting part of the chassis, said section being able to pivot about its axis at at least one point of its length, the lower end of the flexible pipe section being horizontally offset from the vertical branch of the elbow.
Grâce à ce mode de réalisation de l'invention, il est possible de placer un nombre suffisant de canalisations flexibles dans un volume réduit au voisinage de l'axe du châssis, car lors de la rotation du châssis, le pivotement de chaque coude autour de son axe vertical permet aux différentes canalisations de rester sensiblement parallèles entre elles en formant un faisceau.Thanks to this embodiment of the invention, it is possible to place a sufficient number of flexible pipes in a reduced volume in the vicinity of the chassis axis, because when the chassis is rotated, the pivoting of each elbow around its vertical axis allows the different pipes to remain substantially parallel to each other by forming a beam.
En d'autres termes, lors de cette rotation, grâce à ce mode de réalisation préféré de l'invention, les parties horizontales des coudes auxquelles se raccordent les tronçons de canalisation flexibles restent orientées sensiblement dans la même direction, ce qui permet aux flexibles de rester sensiblement parallèles entre eux.In other words, during this rotation, thanks to this mode of preferred embodiment of the invention, the horizontal parts of the elbows to which the flexible pipe sections are connected remain oriented substantially in the same direction, allowing the hoses to remain substantially parallel to each other.
On peut ainsi faire pivoter le châssis d'un angle total d'au moins 180°, ce qui permet de l'orienter dans toutes les directions compte tenu de la symétrique des tambours de fraisage.We can thus rotate the chassis by a total angle of at least 180 °, which allows it to be oriented in all directions taking into account the symmetry of the milling drums.
Dans le but de mieux faire comprendre l'invention, on va en décrire maintenant un mode de réalisation donné à titre d'exemple non limitatif de la portée de l'invention et représenté sur le dessin dans lequel :
- la figure 1 est une vue en élévation d'un appareil selon un mode de réalisation de l'invention,
- la figure 2 représente schématiquement, vu de dessus, le châssis de la figure 1 en cours de pivotement autour de son axe vertical, et
- la figure 3 est une vue selon les flèches III et III' de la figure 2.
- FIG. 1 is an elevation view of an apparatus according to an embodiment of the invention,
- FIG. 2 schematically represents, seen from above, the chassis of FIG. 1 during pivoting around its vertical axis, and
- FIG. 3 is a view according to arrows III and III ′ in FIG. 2.
L'appareil de la figure 1 comporte, à la manière connue, un
châssis 1 qui supporte à sa partie inférieure deux tambours de fraisage 2
entraínables en rotation.The apparatus of FIG. 1 comprises, in the known manner, a
chassis 1 which supports two
Le châssis 1 est suspendu au mât d'un engin de levage non représenté par l'intermédiaire d'un moufle constitué par un câble multibrin 3 et des poulies 4.The chassis 1 is suspended from the mast of a lifting device not represented by a muffle consisting of a multi-strand cable 3 and pulleys 4.
Selon l'invention, le châssis 1 est susceptible de pivoter autour
de son axe vertical 5 grâce à un roulement à billes 6 logé entre la partie
supérieure 7 du châssis et le socle 8 du moufle, comme on peut le voir en
coupe arrachée sur la figure 1.According to the invention, the chassis 1 is capable of pivoting around
its
Ainsi, toutes les pièces situées en dessous du plan horizontal contenant le roulement à billes 6 constituent la partie pivotante du châssis, tandis que toutes celles qui sont situées au dessus de ce plan constituent la partie non pivotante du châssis.Thus, all the parts located below the horizontal plane containing the ball bearing 6 constitute the pivoting part of the chassis, while all those located above this plane constitute the non-pivoting part of the chassis.
Dans le mode de réalisation représenté, une conduite flexible 9
pour l'évacuation des déblais aboutit au châssis 1 selon l'axe vertical 5 de
ce dernier, entre les deux poulies 4 du moufle.In the embodiment shown, a
Cette conduite 9 est raccordée au châssis par l'intermédiaire d'un
joint tournant non représenté qui lui permet de ne pas subir de torsion lors
du pivotement du châssis.This
Dans le mode de réalisation représenté, une pluralité de
canalisations flexibles 10 servant à l'alimentation de l'appareil en énergie
hydraulique descendent entre les deux poulies 4 du moufle pour se raccorder
à la partie non pivotante du châssis.In the embodiment shown, a plurality of
Chacune de ces canalisations aboutit à la branche supérieure d'un
raccord en forme de coude 11 qui est monté sur la partie non pivotante du
châssis, de manière à pouvoir pivoter autour de l'axe de sa branche
supérieure qui est disposée verticalement.Each of these pipes leads to the upper branch of a
L'autre branche du coude 11, qui est horizontale, est raccordée à
l'extrémité supérieure d'un tronçon de canalisation flexible 12 dont
l'extrémité inférieure est raccordée verticalement à la partie pivotante du
châssis.The other branch of the
Chaque tronçon 12 pénètre en 13 dans la partie pivotante du
châssis.Each
Dans le mode de réalisation représenté, chaque tronçon de
canalisation flexible 12 est raccordé à la branche horizontale du coude 11
de manière à pouvoir pivoter autour de son axe longitudinal, de sorte qu'il
ne subit aucune torsion lors du pivotement du châssis.In the embodiment shown, each section of
On voit sur la figure 1 comment les points 13 par lesquels les
tronçons de canalisations flexibles 12 pénètrent la partie pivotante du
châssis 1 sont axialement écartés des coudes 11 qui relient ces tronçons de
canalisations flexibles 12 aux canalisations 10 aboutissant dans la partie
supérieure non pivotante du châssis.We see in Figure 1 how the
On a schématiquement représenté, sur les figures 2 et 3, les
positions relatives de deux tronçons de canalisations flexibles 12, avant et
après rotation d'environ 45° de la partie inférieure du châssis 1.Schematically shown in Figures 2 and 3, the
relative positions of two sections of
La branche verticale, dirigée vers le haut, de chacun des deux
coudes 11 auxquels sont raccordées les extrémités supérieures des
tronçons 12 est représentée par un cercle sur la figure 2.The vertical branch, directed upwards, of each of the two
Conformément à l'invention, chaque coude 11 pivote autour de l'axe
vertical de sa branche supérieure.According to the invention, each
L'extrémité inférieure de chaque tronçon de canalisation 12
aboutit verticalement en 14 sur la partie pivotante du châssis en formant un
arc, comme on peut le voir sur la figure 3, où l'on a schématiquement
représenté en trait plein 12 un tronçon de canalisation dans la position du
châssis qui est représentée en trait plein sur la figure 2, et en trait
interrompu 12' ce même tronçon dans la position du châssis qui est
représentée en trait interrompu sur la figure 2.The lower end of each section of
Comme on le voit clairement sur la figure 2, lorsque le châssis 1
pivote dans le sens de la flèche 15, les tronçons de canalisations
flexibles 12 pivotent autour des branches verticales des coudes 11, en
restant sensiblement parallèles entre eux.As can be clearly seen in Figure 2, when the chassis 1
pivots in the direction of
Compte tenu du fait qu'en raison du pivotement du châssis autour
de son axe vertical 5, la distance horizontale entre les extrémités
inférieure et supérieure d'un tronçon de canalisation flexible diminue, la
courbure de ces tronçons varie, comme on peut le voir sur la figure 3 où le
tracé 12' présente une courbure plus prononcée que le tracé 12. Taking into account that due to the pivoting of the chassis around
from its
On voit en effet sur la figure 3, que la flexion du tronçon de
canalisation 12' est plus importante après pivotement qu'avant pivotement,
ceci en raison du fait que le raccordement 14 du tronçon de canalisation 12
a été rapproché horizontalement du coude 11 lors de la rotation du châssis.It can be seen in FIG. 3 that the bending of the section of
pipe 12 'is more important after pivoting than before pivoting,
this due to the fact that the
Cette distance horizontale varie car le coude 11 est solidaire de
la partie non pivotante du châssis alors que le raccordement 14 est
solidaire de la partie pivotante du châssis.This horizontal distance varies because the
Or, on sait que des points entraínés en rotation autour d'un axe demeurent à une égale distance de cet axe, mais sont à des distances variables de points fixes qui sont écartés dudit axe.However, we know that points driven in rotation around an axis remain at an equal distance from this axis, but are at distances fixed point variables which are spaced from said axis.
Grâce à ce mode de réalisation, il est ainsi possible de faire pivoter le châssis qui supporte les tambours de fraisage d'environ 90° dans un sens ou dans l'autre autour de son axe vertical, tout en conservant sensiblement parallèles les tronçons de canalisations flexibles qui relient la partie haute non pivotante à la partie basse pivotante du châssis, par l'intermédiaire de coudes montés pivotants autour de leur branche verticale.Thanks to this embodiment, it is thus possible to make swivel the frame that supports the milling drums by about 90 ° in one way or the other around its vertical axis, while keeping substantially parallel to the flexible pipe sections which connect the non-pivoting upper part to the pivoting lower part of the chassis, by by means of elbows pivotally mounted around their vertical branch.
Pour des raisons de simplicité, on a représenté un nombre limité de flexibles sur le dessin, mais il est clair qu'il est possible de disposer des groupes plus importants de flexibles de part et d'autre de l'axe du châssis en conservant les avantages décrits ci-dessus.For reasons of simplicity, a limited number has been shown. flexible on the drawing, but it is clear that it is possible to have larger groups of hoses on either side of the axis of the chassis while retaining the advantages described above.
Claims (2)
- Apparatus for producing trenches in the ground, of the type comprising a frame with a vertical axis provided with cutting drums in its lower portion, characterised in that said frame (1) is supported in its upper portion (7) so as to be able to pivot about its vertical axis (5) and in that it further comprises a flexible tube (9) through which the excavated material is brought up to the surface, the end of said flexible tube being arranged along said vertical axis of pivoting of the frame and being able to pivot in relation to said frame.
- Apparatus according to Claim 1, characterised by the fact that flexible pipes (10) supplying the frame (1) with hydraulic power are each connected to the non-pivoting upper portion of the frame (1) via a bend (11) of which the upper branch points upwards and which pivots with respect to the vertical axis of said upper branch, and of which the lower branch, which is substantially horizontal, is connected to the end of a section of flexible pipe (12), the other end of which is preferably connected vertically (14) to the pivoting part of the frame (1), said section (12) being capable of pivoting about its axis at at least one point(16) along its length, the lower end of the section of flexible pipe (12) being offset horizontally with respect to the vertical branch of the bend (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9212047A FR2696768B1 (en) | 1992-10-09 | 1992-10-09 | Apparatus for digging deep trenches in the ground using milling drums mounted on a chassis. |
| FR9212047 | 1992-10-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0592325A1 EP0592325A1 (en) | 1994-04-13 |
| EP0592325B1 true EP0592325B1 (en) | 1998-01-28 |
Family
ID=9434348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93402484A Expired - Lifetime EP0592325B1 (en) | 1992-10-09 | 1993-10-08 | Trenching apparatus for digging deep trenches with cutting drums mounted on a chassis |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0592325B1 (en) |
| JP (1) | JP2866284B2 (en) |
| KR (1) | KR940009457A (en) |
| DE (2) | DE69316698T2 (en) |
| FR (1) | FR2696768B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770224A (en) * | 2014-01-29 | 2014-05-07 | 徐工集团工程机械股份有限公司 | Feeding device of double-wheel slot milling machine and double-wheel slot milling machine |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2752857B1 (en) * | 1996-08-28 | 1998-12-04 | Sol Comp Du | APPARATUS FOR EXCAVATING LARGE DEEP TRENCHES IN THE SOIL |
| EP1703023B1 (en) * | 2005-03-18 | 2011-06-22 | BAUER Maschinen GmbH | Slit wall digging device with direction control system |
| DE502007001118D1 (en) * | 2007-01-26 | 2009-09-03 | Bauer Maschinen Gmbh | soil stripping |
| FR2926096B1 (en) | 2008-01-03 | 2014-02-21 | Cie Du Sol | EXCAVATION MACHINE SUITABLE FOR TRANSPORTING IN CONTAINERS |
| IT1391620B1 (en) | 2008-11-05 | 2012-01-11 | Soilmec Spa | HANDLING DEVICE FOR AN EXCAVATION TOOL IN THE VERTICALLY SUSPENDED GROUND. |
| CN103061367B (en) * | 2013-01-18 | 2015-01-21 | 芜湖县新芜科技企业孵化器有限公司 | Four-saw grooving machine |
| DE202019100319U1 (en) * | 2019-01-21 | 2020-04-22 | Liebherr-Werk Nenzing Gmbh | Trench cutter |
| CN114000553A (en) * | 2021-11-11 | 2022-02-01 | 国网四川电力送变电建设有限公司 | Excavation mechanism and excavator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1508347A (en) * | 1966-11-24 | 1968-01-05 | Poclain Sa | Easily removable orientation assembly for earthmoving machine clamshell |
| US4718504A (en) * | 1985-03-15 | 1988-01-12 | Tone Boring Co., Ltd. | Trench excavator |
-
1992
- 1992-10-09 FR FR9212047A patent/FR2696768B1/en not_active Expired - Lifetime
-
1993
- 1993-10-08 EP EP93402484A patent/EP0592325B1/en not_active Expired - Lifetime
- 1993-10-08 KR KR1019930020895A patent/KR940009457A/en not_active Application Discontinuation
- 1993-10-08 DE DE69316698T patent/DE69316698T2/en not_active Expired - Lifetime
- 1993-10-08 DE DE0592325T patent/DE592325T1/en active Pending
- 1993-10-12 JP JP5287216A patent/JP2866284B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770224A (en) * | 2014-01-29 | 2014-05-07 | 徐工集团工程机械股份有限公司 | Feeding device of double-wheel slot milling machine and double-wheel slot milling machine |
| CN103770224B (en) * | 2014-01-29 | 2016-06-01 | 徐工集团工程机械股份有限公司 | The feeding device of a kind of two-wheel groove milling machine and two-wheel groove milling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0592325A1 (en) | 1994-04-13 |
| JP2866284B2 (en) | 1999-03-08 |
| FR2696768B1 (en) | 1994-11-10 |
| KR940009457A (en) | 1994-05-20 |
| DE592325T1 (en) | 1994-11-03 |
| JPH06200539A (en) | 1994-07-19 |
| FR2696768A1 (en) | 1994-04-15 |
| DE69316698D1 (en) | 1998-03-05 |
| DE69316698T2 (en) | 1998-09-17 |
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