EP0887474A2 - Benne d'excavation à câbles - Google Patents
Benne d'excavation à câbles Download PDFInfo
- Publication number
- EP0887474A2 EP0887474A2 EP98401579A EP98401579A EP0887474A2 EP 0887474 A2 EP0887474 A2 EP 0887474A2 EP 98401579 A EP98401579 A EP 98401579A EP 98401579 A EP98401579 A EP 98401579A EP 0887474 A2 EP0887474 A2 EP 0887474A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bucket
- excavation
- shells
- skirt
- opening
- 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.)
- Granted
Links
Images
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
- E02F3/26—Safety or control devices
-
- 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
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/47—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets
- E02F3/475—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets for making foundation slots
Definitions
- the present invention relates to a bucket excavation for digging deep excavations, even very deep in a ground, the excavation, having, seen in the horizontal plane, a dimension in a first direction, weak compared to the dimension in a second direction, perpendicular to the first, this last dimension being hereinafter called "width" of the excavation.
- Excavation work performed using such are often, but not exclusively, intended to dig excavations in which walls of peripheral support for buildings with surface area important, prior to the excavation work necessary to dig into the ground the volume in which are then built the various levels building underground.
- This working method is used especially in urban areas with high construction density where the depth of an excavation at open sky to build the basement of the building would require embankments occupying too much land.
- the skips targeted by the invention are capable of dig narrow excavations to depths of around 100 m over a width of up to 2 m, for example.
- a type of bucket often used for this purpose is the cable grab which has the advantage of requiring no hydraulic power supply, the bucket being suspended from a crane via a first cable. Its two excavation shells can be ordered by through this cable and a second cable passing over a set of mittens. The two shells are hinged at the lower part of a rigid frame, called "skirt", containing in particular the set of mittens. This set of mittens has one or more fixed mittens and one or more mobile mittens on which the second cable passes. The entire mechanism allows the crane operator to control the opening and closing movements of the shells from ground level.
- the first deviation mentioned which is therefore lateral, has no influence on the profile obtained from the excavation and therefore results in little uncomfortable.
- the bucket with organs trajectory correction in the form of mounted flaps hinged along the vertical sides of the skirt and capable, by means of a control mechanism suitable with cylinders, be taken out of enveloping surfaces and more precisely the plans vertical of the front faces of the skirt. So every time the bucket reaches the bottom of the excavation, and before shells are not closed for work of excavation, we measure the attitude of the bucket in relation to a reference coordinate system and we output the flaps according to the deviations measured. The shutters in leaning with some force on the wall of excavation can then reposition the bucket in the placing on the imposed path.
- the correction device which has just been described briefly, can only work with skips excavation with fully hydraulic control.
- the flap control and the energy source required for this purpose can be relatively easily associated with the control system opening and closing shells, because hydraulic pipes must already be in any case provided between the crane and the bucket to operate this system.
- the invention therefore aims to provide a bucket cable type excavator with adjusting flaps attitude avoiding any complications in terms of connection between the skirt and the suspension crane, while allowing their proper functioning with a view to correction of the trajectory of the bucket.
- the invention therefore relates to an excavation bucket cables of the type comprising a skirt to which are articulated excavation shells and which includes a mechanism for opening and closing said shells, actuated by said cables and adjustment flaps attitude of the bucket to compensate, during work excavation, any deviations of the bucket from a prescribed path, including the path vertical, said flaps being able to be brought selectively to protrude from the enveloping surfaces of the skirt to to compensate for the trajectory of the bucket, on the wall of the excavation depending on the value measured of these deviations, via a system of flap control, said bucket being characterized in that that it also includes, integrated into said skirt, a energy generator and drive means which, for operate said energy generator, are animated, by mechanical coupling, by said opening mechanism and for closing the shells, said energy generator being connected to supply power to said control system Shutters.
- the excavation skip according to the invention comprises a chassis 1 or skirt intended to be suspended from two cables 2 and 3 which are, in a known manner in itself, controlled by a crane (not shown). Cables 2 and 3 can be selectively operated by the driver of the crane for both the ascent and descent of the bucket and for ordering two excavation shells 4 and 5 which are articulated on the lower part of the skirt 1 around respective horizontal axes 6 and 7.
- the skirt 1 has a general shape in parallelepiped rectangle whose smallest dimension corresponds to little close to the width of the excavation to be dug, i.e. the thickness of the wall which will be poured into it.
- the Figures 1 and 2 show the bucket by a large face of the parallelepiped, the front wall being removed.
- skirt 1 Inside the skirt 1 are mounted two rails parallel verticals 8 and 9, near its lateral edges vertical. Furthermore, the upper wall of the skirt is provided with an orifice 10 flanked by rollers 11 and 12. Between these rollers 11 and 12 can slide the vertical rod 13 of a carriage 14 which at its upper part is provided with rollers 15 and 16 intended to roll on rails 8 and 9. This carriage can thus make a vertical movement back and forth at inside the skirt 1.
- Two tie rods 17 are mounted articulated on the one hand to the lower part of the carriage 14 and on the other hand at the edges outside of the respective shells 4 and 5.
- the shells 4 and 5 are in their closed position, while when in its high position, shells 4 and 5 are in their open position ( Figure 2).
- the bucket also has a set of mittens lower 18a rotatably attached to the skirt 1, as well as a set of upper mittens 18b, rotatably mounted on the carriage 14.
- the cable 2 is fixed directly to the carriage 14 to allow the opening of shells 4 and 5 thanks to the weight clean the bucket.
- Cable 3 passes over the mittens 18a and 18b in several loops to allow the closure of the shells 4 and 5, the pulling on the cable 3 causing the bringing together mittens 18a and 18b and whose rise in carriage 14 and thus the forceful closing of the shells 4 and 5 to take material from the ground to be excavated.
- the bucket also has two side flaps 19 and 20 articulated respectively around horizontal axes 21 and 22 extending parallel to the large faces of the body of the skirt 1.
- the axes are located at the bottom of the respective flaps and aligned with each other (see also Figures 4 and 5).
- Each flap 19 and 20 is formed by a section box horizontal in U overlapping the corresponding side of the skirt 1.
- the side face of each flap has a hole 23 in the form of a buttonhole in which a pawn of guide 24 integral with the skirt 1.
- each part 19 and 20 can take three positions (see in particular Figures 3 and 4), know an inactive middle position in which it is laterally aligned on skirt 1 and two positions attitude adjustment in which he finds himself respectively obliquely projecting outwards on the large corresponding face of the skirt 1.
- An actuating cylinder, respectively 25 and 26, is associated with each flap 19 and 20.
- This jack is supported on the body of skirt 1 by one of its ends, and it is attached by its other end to the corresponding flap.
- FIG. 6 shows a preferred embodiment cylinders 25, 26. Each of them preferably consists a double cylinder with two separate chambers 27 and 28 in which pistons 29 and 30 provided with individual rods 31 and 32 which form respectively the ends of the cylinder 25 or 26.
- This construction of cylinders 25 and 26 makes it possible to define the three positions of each flap 19 and 20 with a maximum economy of means.
- each flap 19 and 20 comprises a autonomous control device 33 to which the crane operator is finding on the surface can, with each catch, send attitude adjustment orders based on signals attitude provided by an inertial unit (not shown) that can be mounted on the bucket.
- each autonomous control device 33 includes a pump hydraulic cylinder 34 comprising a cylinder 35 and a piston 36 (see in particular Figures 5 and 7), piston 36 being integral with a rod which is connected by a articulation 37 to a lever 38, in turn articulated by one of its ends on the body of the flap 19 or 20.
- the lever 38 has a wear plate 39 on which one of the rollers 15 or 16 can come to rest of the carriage 14, at the end of the descent thereof (closed position of shells 4 and 5; Figure 1).
- the roller 15 or 16 correspondent turns lever 38 around its point of articulation which makes return the piston 36 in its cylinder 35 in which there will thus occur a pressure increase.
- each autonomous control device 33 includes an accumulator high pressure 40 and a low pressure accumulator 41.
- the pump chamber 34 located on one side of the piston 36 is connected directly to the low pressure accumulator 41 and this room is thus filled with a certain amount of fluid each time the cart is lowered 14.
- the chamber on the other side of the piston 36 is connected to two non-return valves 42 and 43, the valve 42 being connected in the direction of passage of the fluid between the pump return chamber 34 and the pressure chamber of it.
- the valve 43 is connected in the direction of passage to one of the pump chambers 34 and a line to high pressure 46. This is connected by a limiter 45 set at 135 bars for example at a low pressure line 44 also connected to the low pressure accumulator 41.
- the high and low pressure lines 44 and 46 are connected to the attitude adjustment cylinder 25 or 26 by through hydroelectric selectors 47 and 48 can be operated selectively by the crane operator (or possibly automatically) to place the cylinder 25 or 26 in one of its three positions according to the diagram of connection imposed by the respective selectors.
- piston 36 of the pump 34 is at differential surfaces (not visible in the drawings) so ensure that when the roller 15 or 16 leaves the lever 38 of the respective flap 19 or 20, the pressure in the chambers of cylinder 35 applying to differential sections has a return action on the piston 36 causing the piston rod out of cylinder 35.
- the control device 33 of the bucket according to the invention just described is thus entirely autonomous, its hydraulic energy being supplied to it in the bucket itself thanks to the lowering movement of the carriage 14 which necessarily goes back and forth with each take of the grab. Therefore, no hydraulic connection is necessary between the bucket and the lifting device located the surface, only a multiple electrical sheath conductors being necessary to go up the signals of measurement provided by the inertial unit and to descend the control signals to the selectors 47 and 48.
- the energy generator actuated by virtue of the movements of the carriage 14 can be other than hydraulic, e.g. electrical, the device actuating flaps 19 and 20, described above under the shape of the jack 25 or 26, being adapted accordingly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Reciprocating Pumps (AREA)
- Operation Control Of Excavators (AREA)
- Communication Cables (AREA)
- Earth Drilling (AREA)
Abstract
Description
- la figure 1 est une vue en élévation frontale d'une benne d'excavation selon l'invention, ses coquilles étant en position fermée;
- la figure 2 est une en élévation frontale de la benne de la figure 1, les coquilles étant en position ouverte;
- la figure 3 est une vue en élévation latérale de la benne montrant globalement un dispositif de commande d'un volet de correction de trajectoire;
- la figure 4 représente par une vue en élévation à échelle agrandie l'un des volets de la benne avec son dispositif de commande;
- la figure 5 est une vue en coupe prise selon la ligne A-A de la figure 4;
- la figure 6 est une vue en coupe axiale d'un vérin de commande d'un volet; et
- la figure 7 est un schéma hydraulique du dispositif de commande d'un volet.
Claims (5)
- Benne d'excavation à câbles du type comportant une jupe (1) à laquelle sont articulées des coquilles d'excavation (4, 5) et qui comprend un mécanisme d'ouverture et de fermeture (8, 9, 11, 12 et 13 à 18b) desdits coquilles, actionné par lesdits câbles (2, 3), et des volets (19, 20) de réglage d'attitude de la benne pour compenser, lors du travail d'excavation, les éventuels écarts de la benne par rapport à une trajectoire prescrite, notamment la trajectoire verticale, lesdits volets (19, 20) pouvant être amenés sélectivement à faire saillie des surfaces enveloppantes de la jupe (1) pour s'appuyer de façon compensatrice de la trajectoire de la benne, sur la paroi de l'excavation en fonction de la valeur mesurée de ces écarts, par l'intermédiaire d'un système de commande (25, 26) des volets,caractérisée en ce qu'elle comprend également, intégrée dans ladite jupe (1), un générateur d'énergie (34) et des moyens d'entraínement (37, 38, 39) qui, pour faire fonctionner ledit générateur d'énergie (34), sont animés, par couplage mécanique, par ledit mécanisme d'ouverture et de fermeture des coquilles (4, 5), ledit générateur d'énergie (34) étant connecté pour alimenter en énergie ledit système de commande (25, 26) des volets.
- Benne d'excavation suivant la revendication 1, dans laquelle ledit mécanisme d'ouverture et de fermeture (8, 9, 11, 12 et 13 à 18b) comprend un chariot (14) porte-moufles animé de mouvements de montée et de descente pour l'ouverture et la fermeture desdites coquilles (4, 5) caractérisée en ce que ledit mécanisme d'entraínement (37, 38, 39) comporte un organe moteur (38) actionné par le mouvement de descente dudit chariot (14).
- Benne d'excavation suivant l'une quelconque des revendications 1 et 2, caractérisée en ce que ledit générateur d'énergie (34) est une pompe hydraulique.
- Benne d'excavation suivant les revendications 2 et 3, caractérisée en ce que ladite pompe hydraulique se présente sous la forme d'un vérin (34) à cylindre et piston et en ce que ledit organe moteur est un levier (38) articulé sur ledit châssis (1) et provoquant la rentrée dudit piston dans ledit cylindre sous l'action de la descente dudit chariot (14) pour accroítre la pression dans ledit cylindre.
- Benne d'excavation suivant la revendication 4, caractérisée en ce que ladite pompe hydraulique (34) est connectée à des moyens d'accumulation de pression (40, 41) remplis d'une quantité prédéterminée de fluide hydraulique à chaque prise de la benne.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9707925A FR2765257B1 (fr) | 1997-06-25 | 1997-06-25 | Benne d'excavation a cables perfectionnee |
FR9707925 | 1997-06-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0887474A2 true EP0887474A2 (fr) | 1998-12-30 |
EP0887474A3 EP0887474A3 (fr) | 1999-08-04 |
EP0887474B1 EP0887474B1 (fr) | 2002-09-04 |
Family
ID=9508403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98401579A Expired - Lifetime EP0887474B1 (fr) | 1997-06-25 | 1998-06-25 | Benne d'excavation à câbles |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0887474B1 (fr) |
AT (1) | ATE223540T1 (fr) |
DE (1) | DE69807599T2 (fr) |
ES (1) | ES2183299T3 (fr) |
FR (1) | FR2765257B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3107537A1 (fr) * | 2020-02-25 | 2021-08-27 | Soletanche Freyssinet | Machine d’excavation ayant un châssis muni d’ailes de guidage |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2296535B1 (es) * | 2006-10-03 | 2009-05-05 | Modelco S.L. | Sistema de apertura de valvas para cucharas de maquinas excavadoras. |
CN113323046B (zh) * | 2021-05-25 | 2021-11-26 | 徐州徐工基础工程机械有限公司 | 一种双轮铣槽机扶正装置 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1376253A (fr) * | 1963-12-04 | 1964-10-23 | Procédé pour creuser une saignée au moyen d'une benne preneuse et dispositif poursa mise en oeuvre | |
JPS59425A (ja) * | 1982-06-22 | 1984-01-05 | Mitsui Constr Co Ltd | 地下壁面掘削機 |
FR2533635A1 (fr) * | 1982-09-23 | 1984-03-30 | Albin Alexis | Procede de recuperation de l'energie potentielle developpee par une grue et dispositif permettant de le mettre en oeuvre |
DE3805868A1 (de) * | 1988-02-25 | 1989-09-07 | Hochtief Ag Hoch Tiefbauten | Seilgefuehrter schlitzwandgreifer |
JPH03110288A (ja) * | 1989-09-22 | 1991-05-10 | Mitsui Constr Co Ltd | 曲線孔掘削機 |
JPH03241118A (ja) * | 1990-02-19 | 1991-10-28 | Fujita Corp | 地中連続壁用溝の自動掘削装置 |
EP0518298A1 (fr) * | 1991-06-11 | 1992-12-16 | Bauer Spezialtiefbau GmbH | Fraise pour voiles et procédé de fraisage |
DE4309233C1 (de) * | 1993-03-23 | 1994-07-21 | Leffer Stahl & App | Verfahren und Vorrichtung zum exakten Einhalten der vertikalen Aushubrichtung einer Schlitzwand |
DE4309269A1 (de) * | 1993-03-23 | 1994-09-29 | Fromme Theo | Zweischaufelgreifer zum Herstellen zylindrischer Bohrungen |
JPH06346448A (ja) * | 1993-06-07 | 1994-12-20 | Shimizu Corp | 掘削機の自動偏位修正方法及び装置並びに掘削機の掘削速度制御方法 |
-
1997
- 1997-06-25 FR FR9707925A patent/FR2765257B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-25 EP EP98401579A patent/EP0887474B1/fr not_active Expired - Lifetime
- 1998-06-25 AT AT98401579T patent/ATE223540T1/de not_active IP Right Cessation
- 1998-06-25 DE DE69807599T patent/DE69807599T2/de not_active Expired - Fee Related
- 1998-06-25 ES ES98401579T patent/ES2183299T3/es not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1376253A (fr) * | 1963-12-04 | 1964-10-23 | Procédé pour creuser une saignée au moyen d'une benne preneuse et dispositif poursa mise en oeuvre | |
JPS59425A (ja) * | 1982-06-22 | 1984-01-05 | Mitsui Constr Co Ltd | 地下壁面掘削機 |
FR2533635A1 (fr) * | 1982-09-23 | 1984-03-30 | Albin Alexis | Procede de recuperation de l'energie potentielle developpee par une grue et dispositif permettant de le mettre en oeuvre |
DE3805868A1 (de) * | 1988-02-25 | 1989-09-07 | Hochtief Ag Hoch Tiefbauten | Seilgefuehrter schlitzwandgreifer |
JPH03110288A (ja) * | 1989-09-22 | 1991-05-10 | Mitsui Constr Co Ltd | 曲線孔掘削機 |
JPH03241118A (ja) * | 1990-02-19 | 1991-10-28 | Fujita Corp | 地中連続壁用溝の自動掘削装置 |
EP0518298A1 (fr) * | 1991-06-11 | 1992-12-16 | Bauer Spezialtiefbau GmbH | Fraise pour voiles et procédé de fraisage |
DE4309233C1 (de) * | 1993-03-23 | 1994-07-21 | Leffer Stahl & App | Verfahren und Vorrichtung zum exakten Einhalten der vertikalen Aushubrichtung einer Schlitzwand |
DE4309269A1 (de) * | 1993-03-23 | 1994-09-29 | Fromme Theo | Zweischaufelgreifer zum Herstellen zylindrischer Bohrungen |
JPH06346448A (ja) * | 1993-06-07 | 1994-12-20 | Shimizu Corp | 掘削機の自動偏位修正方法及び装置並びに掘削機の掘削速度制御方法 |
Non-Patent Citations (4)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 008, no. 083 (M-290), 17 avril 1984 -& JP 59 000425 A (MITSUI KENSETSU KK), 5 janvier 1984 * |
PATENT ABSTRACTS OF JAPAN vol. 015, no. 303 (M-1142), 2 août 1991 -& JP 03 110288 A (MITSUI CONSTR CO LTD), 10 mai 1991 * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 030 (M-1203), 24 janvier 1992 -& JP 03 241118 A (FUJITA CORP), 28 octobre 1991 * |
PATENT ABSTRACTS OF JAPAN vol. 095, no. 003, 28 avril 1995 -& JP 06 346448 A (SHIMIZU CORP), 20 décembre 1994 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3107537A1 (fr) * | 2020-02-25 | 2021-08-27 | Soletanche Freyssinet | Machine d’excavation ayant un châssis muni d’ailes de guidage |
EP3872267A1 (fr) * | 2020-02-25 | 2021-09-01 | Soletanche Freyssinet | Machine d'excavation ayant un chassis muni d'ailes de guidage |
Also Published As
Publication number | Publication date |
---|---|
FR2765257A1 (fr) | 1998-12-31 |
EP0887474B1 (fr) | 2002-09-04 |
ATE223540T1 (de) | 2002-09-15 |
FR2765257B1 (fr) | 1999-09-03 |
DE69807599T2 (de) | 2003-04-24 |
ES2183299T3 (es) | 2003-03-16 |
EP0887474A3 (fr) | 1999-08-04 |
DE69807599D1 (de) | 2002-10-10 |
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