EP0249555A1 - Motorpump for a fraising device for digging trenches in the ground - Google Patents

Motorpump for a fraising device for digging trenches in the ground Download PDF

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Publication number
EP0249555A1
EP0249555A1 EP87401298A EP87401298A EP0249555A1 EP 0249555 A1 EP0249555 A1 EP 0249555A1 EP 87401298 A EP87401298 A EP 87401298A EP 87401298 A EP87401298 A EP 87401298A EP 0249555 A1 EP0249555 A1 EP 0249555A1
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EP
European Patent Office
Prior art keywords
pump
motor
axis
ground
volute
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
Application number
EP87401298A
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German (de)
French (fr)
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EP0249555B1 (en
Inventor
Karl Bollinger
Philippe Chagnot
Alain Feugas
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Soletanche SA
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Soletanche SA
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Filing date
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Publication of EP0249555A1 publication Critical patent/EP0249555A1/en
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Publication of EP0249555B1 publication Critical patent/EP0249555B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind 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
    • 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
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps

Definitions

  • the present invention relates to a motor pump for milling machine, intended to dig trenches in the ground, of the type in which two drums with horizontal parallel axes provided with tools are placed at the bottom of a chassis of generally rectangular section and are driven in rotation so as to disintegrate the ground to create a trench, the ground debris being raised using a pump which sucks them at the same time as part of the drilling mud with which the trench is kept filled .
  • the machines of this type must have a width at most equal to the width of the wall which is molded in the trench thus dug in the ground.
  • the only pumps which can be used in practice are centrifugal pumps whose speed of rotation is limited by the speed of rotation of the motors of drive (most often hydraulic), or can only increase their delivery head by increasing the diameter of their volute.
  • the present invention relates to a debris motor pump intended for milling machines for digging trenches in the ground which have the particularity of occupying a small footprint which does not unnecessarily increase the width of the trench and therefore the width of the wall molded in the latter, this motor pump nevertheless having sufficient power and delivery head to remove debris from the borehole.
  • the present invention relates to a motor pump of this type, characterized in that the axis of rotation of the pump is inclined about 45 ° relative to the vertical in a plane parallel to the axes of the cutters.
  • the motor-driven pump which also has the characteristic of being driven by a hydraulic motor, the cylinders of which are arranged in a barrel with a substantially vertical axis and the pistons of which act on a plate which is directly mounted on the pump rotor shaft.
  • the pump unit which has just been described is supported at its lower part by the cover of the volute through which the suction of the pump passes.
  • the pump set can be easily mounted on a chassis whose length and width are slightly less than the size of the pump set and which can thus be easily set up and removed for maintenance using a forklift for example.
  • FIGS. 1 and 2 There is diagrammatically shown in FIGS. 1 and 2 the lower part of a machine whose cutters 1 and 2 have simply been represented by their outline. These cutters which are constituted by drums provided with drilling tools on their periphery, rotate in the direction arrows of Figure 1 by bringing between them the debris of the ground which are created by drilling.
  • the cutters 1 and 2 are supported in the known manner by a frame 3 of which only the lower part is schematically shown in the drawing.
  • This frame may for example be 50 to 60 cm wide, 1.50 to 2.50 m long and a height which can reach 8 to 10 meters, without these dimensional indications being in any way limiting of the invention.
  • the drilling waste pump device consists of a centrifugal pump 4 whose axis 5 is inclined at about 45 ° relative to the vertical and which is located in a plane parallel to the axes 6 of the cutters 1 and 2.
  • the centrifugal pump 4 is driven by a hydraulic motor 7 which is secured on top of the pump 4.
  • the suction pipe 8 of the pump 4 is connected in a known manner to a suction head 9 which is located between the two cutters 1 and 2, slightly above the axis of the latter, at the place where the drilling debris is rejected by the cutters.
  • the volute of the pump 4 opens at 10 towards the outside in the direction of a vertical pipe 11 shown in broken lines in FIG. 1 which rises to the open air to discharge the drilling waste there.
  • the diameter of the volute can have a width substantially greater than the useful space which is available inside the body 3 of the machine.
  • FIG. 3 shows the centrifugal pump 4 whose axis 5 is inclined about 45 ° relative to the vertical, and which is surmounted by the hydraulic motor 7.
  • the motor pump is supported by its lower cover 12 which is provided with the central orifice corresponding to the suction pipe 8.
  • the chassis of the motor pump group consists of the plate 13 which is inclined at an angle complementary to that of axis 5 and which is provided with legs 14 and 15 to allow the attachment of the motor-driven pump to a horizontal support.
  • the upper face of the volute is closed by a housing 17 which, by means of its cover 18, maintains, by means of the bearings diagrammatically shown, the axis 19 of the rotor 20 of the centrifugal pump.
  • the hydraulic motor 7 is directly fixed to the cover 18 of the housing 17, while the plate 21 of the motor which is extended by a rod 22 is made integral with the axis 19 of the pump by means of a key 23 which secures in rotation the rod 22 of the plate and the axis 19 of the pump rotor.
  • the barrel containing the cylinders of the engine 7 is rotated at the same speed as the plate, thanks to the gears 25 and 26.
  • the axis 19 which is incorporated in the upper face of the pump, supports at its lower part the turbine 20 and at its upper part the plate 21 on which the pistons of the hydraulic motor act.
  • the inclination of the axis of the centrifugal pump according to the invention allows in practice for a given overall volume to increase by about 20% the diameter of the volute, that is to say about 40% of the pump head.
  • two transverse passages 27 are provided, arranged parallel to the axis 6 of the cutters and integrated into the frame of the pump unit which allow the engagement of the two forks of a carriage. elevator so as to ensure easy installation and extraction of the pump set for maintenance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Soil Working Implements (AREA)

Abstract

1. Motor-driven waste pump intended for cutting machines for digging trenches in the ground, characterized in that the axis of rotation (5) of the pump (4) is inclined at approximately 45 degrees relative to the vertical in a vertical plane parallel to the axes (6) of the cutters (1, 2).

Description

La présente invention est relative à une motopompe pour engin de fraisage, destiné à creuser des tranchées dans le sol, du type dans lequel deux tambours à axes parallèles horizontaux munis d'outils sont placés dans le bas d'un châssis de section généralement rectangulaire et sont entraînés en rotation de manière à désagréger le terrain pour créer une tranchée, les débris de terrain étant remontés à l'aide d'une pompe qui les aspire en même temps qu'une partie de la boue de forage dont on maintient la tranchée remplie.The present invention relates to a motor pump for milling machine, intended to dig trenches in the ground, of the type in which two drums with horizontal parallel axes provided with tools are placed at the bottom of a chassis of generally rectangular section and are driven in rotation so as to disintegrate the ground to create a trench, the ground debris being raised using a pump which sucks them at the same time as part of the drilling mud with which the trench is kept filled .

Les engins de ce type doivent avoir une largeur au plus égale à la largeur de la paroi qui est moulée dans la tranchée ainsi creusée dans le sol.The machines of this type must have a width at most equal to the width of the wall which is molded in the trench thus dug in the ground.

Comme par ailleurs l'on est amené à accroître la puissance appliquée sur les fraises, la quantité de débris qu'il est nécessaire de remonter à la surface augmente en conséquence lorsque l'on veut accroître le rendement de tels engins.As, moreover, it is necessary to increase the power applied to the cutters, the quantity of debris which it is necessary to return to the surface increases consequently when one wishes to increase the yield of such machines.

De même, on est amené à réaliser des tranchées de plus en plus profondes, ce qui oblige à utiliser des pompes à déblais qui possèdent des hauteurs de refoulement qui peuvent atteindre plus de 50 mètres et qui doivent fournir des débits importants.Similarly, it is necessary to make deeper and deeper trenches, which requires the use of cuttings pumps which have delivery heights which can reach more than 50 meters and which must provide significant flows.

Comme les déblais qui proviennent des débris de terrain peuvent se présenter sous la forme de morceaux relativement volumineux, les seules pompes qui peuvent être utilisées dans la pratique sont des pompes centrifuges dont la vitesse de rotation est limitée par la vitesse de rotation des moteurs d'entraînement (le plus souvent hydrauliques), ou ne peuvent accroître leur hauteur de refoulement que par accroîssement du diamètre de leur volute.As the cuttings which come from the ground debris can be in the form of relatively bulky pieces, the only pumps which can be used in practice are centrifugal pumps whose speed of rotation is limited by the speed of rotation of the motors of drive (most often hydraulic), or can only increase their delivery head by increasing the diameter of their volute.

La présente invention est relative à une motopompe à débris destinée à des engins de fraisage pour creuser des tranchées dans le sol qui présentent la particularité d'occuper un faible encombrement ce qui permet de ne pas augmenter inutilement la largeur de la tranchée et donc la largeur de la paroi moulée dans cette dernière, cette motopompe ayant néanmoins une puissance et une hauteur de refoulement suffisantes pour éliminer les débris du forage.The present invention relates to a debris motor pump intended for milling machines for digging trenches in the ground which have the particularity of occupying a small footprint which does not unnecessarily increase the width of the trench and therefore the width of the wall molded in the latter, this motor pump nevertheless having sufficient power and delivery head to remove debris from the borehole.

La présente invention a pour objet une motopompe de ce type, caractérisée par le fait que l'axe de rotation de la pompe est incliné d'environ 45° par rapport à la verticale dans un plan parallèle aux axes des fraises.The present invention relates to a motor pump of this type, characterized in that the axis of rotation of the pump is inclined about 45 ° relative to the vertical in a plane parallel to the axes of the cutters.

Grâce à cette disposition conforme à l'invention, il est possible d'utiliser une pompe centrifuge dont la volute présente un diamètre extérieur qui est notablement plus grand que la place libre dont on dispose en largeur à l'intérieur de l'engin.Thanks to this arrangement according to the invention, it is possible to use a centrifugal pump whose volute has a diameter outside which is significantly larger than the free space which is available in width inside the machine.

Selon un mode de réalisation préféré de l'invention, la motopompe qui présente en outre la caractéristique d'être entraînée par un moteur hydraulique dont les cylindres sont disposés selon un barillet à axe sensiblement vertical et dont les pistons agissent sur un plateau qui est directement monté sur l'arbre du rotor de la pompe.According to a preferred embodiment of the invention, the motor-driven pump which also has the characteristic of being driven by a hydraulic motor, the cylinders of which are arranged in a barrel with a substantially vertical axis and the pistons of which act on a plate which is directly mounted on the pump rotor shaft.

Grâce à ce mode de réalisation préféré de l'invention, on a affaire à une unité motopompe intégrée, l'axe du rotor de la pompe supportant directement le plateau du moteur. De ce fait, ce dernier peut être dispensé des roulements qui, dans les moteurs hydrauliques conventionnels, sont nécessaires pour assurer la rotation correcte du plateau.Thanks to this preferred embodiment of the invention, we are dealing with an integrated motor pump unit, the axis of the pump rotor directly supporting the motor plate. Therefore, the latter can be dispensed with bearings which, in conventional hydraulic motors, are necessary to ensure the correct rotation of the plate.

Il résulte de plus de ce mode de réalisation préféré de l'invention que le moteur hydraulique qui est fixé sur le carter de la pompe n'occupe qu'un très faible volume et ne fait pas saillie en dehors du contour apparent vertical de la volute de la pompe.It further results from this preferred embodiment of the invention that the hydraulic motor which is fixed to the pump housing occupies only a very small volume and does not protrude outside the apparent vertical contour of the volute of the pump.

Selon un mode de réalisation particulier de l'invention, le groupe motopompe qui vient d'être décrit est supporté à sa partie inférieure par le couvercle de la volute à travers lequel passe l'aspiration de la pompe.According to a particular embodiment of the invention, the pump unit which has just been described is supported at its lower part by the cover of the volute through which the suction of the pump passes.

Grâce à cela, le groupe motopompe peut être facilement monté sur un châssis dont la longueur et la largeur sont légèrement inférieures à l'encombrement du groupe motopompe et qui peut ainsi être facilement mis en place et enlevé pour son entretien à l'aide d'un chariot élévateur par exemple.Thanks to this, the pump set can be easily mounted on a chassis whose length and width are slightly less than the size of the pump set and which can thus be easily set up and removed for maintenance using a forklift for example.

Dans le but de mieux faire comprendre l'invention, on va en décrire à titre d'illustration et sans aucun caractère limitatif un mode de réalisation pris comme exemple et représenté sur le dessin annexé.In order to better understand the invention, we will describe by way of illustration and without any limiting character an embodiment taken as an example and shown in the accompanying drawing.

Sur ce dessin :

  • - la figure 1 est une vue schématique en élévation de la partie inférieure d'un engin muni d'une motopompe selon l'invention,
  • - la figure 2 est une vue de gauche correspondant à la figure 1, et
  • - la figure 3 est une vue en coupe axiale à plus grande échelle de la motopompe des figures 1 et 2.
On this drawing :
  • FIG. 1 is a diagrammatic elevation view of the lower part of a machine fitted with a motor pump according to the invention,
  • FIG. 2 is a left view corresponding to FIG. 1, and
  • FIG. 3 is a view in axial section on a larger scale of the motor pump of FIGS. 1 and 2.

On a schématiquement représenté sur les figures 1 et 2 la partie inférieure d'un engin dont les fraises 1 et 2 ont simplement été représentées par leur contour. Ces fraises qui sont constituées par des tambours munis d'outils de forage sur leur périphérie, tournent dans le sens des flèches de la figure 1 en ramenant entre elles les débris du terrain qui sont créés par le forage.There is diagrammatically shown in FIGS. 1 and 2 the lower part of a machine whose cutters 1 and 2 have simply been represented by their outline. These cutters which are constituted by drums provided with drilling tools on their periphery, rotate in the direction arrows of Figure 1 by bringing between them the debris of the ground which are created by drilling.

Les fraises 1 et 2 sont supportées à la manière connue par un bâti 3 dont seule la partie inférieure est schématiquement représentée sur le dessin. Ce bâti peut avoir par exemple 50 à 60 cm de large, 1m50 à 2m50 de long et une hauteur qui peut atteindre 8 à 10 mètres, sans que ces indications dimensionnelles soient en rien limitatives de l'invention.The cutters 1 and 2 are supported in the known manner by a frame 3 of which only the lower part is schematically shown in the drawing. This frame may for example be 50 to 60 cm wide, 1.50 to 2.50 m long and a height which can reach 8 to 10 meters, without these dimensional indications being in any way limiting of the invention.

Le dispositif de pompe des déchets de forage est constitué par une pompe centrifuge 4 dont l'axe 5 est incliné à environ 45° par rapport à la verticale et qui est situé dans un plan parallèle aux axes 6 des fraises 1 et 2.The drilling waste pump device consists of a centrifugal pump 4 whose axis 5 is inclined at about 45 ° relative to the vertical and which is located in a plane parallel to the axes 6 of the cutters 1 and 2.

Conformément à un mode de réalisation préféré de l'invention, la pompe centrifuge 4 est entraînée par un moteur hydraulique 7 qui est assujetti sur le dessus de la pompe 4.According to a preferred embodiment of the invention, the centrifugal pump 4 is driven by a hydraulic motor 7 which is secured on top of the pump 4.

La canalisation d'aspiration 8 de la pompe 4 est reliée de manière connue à une tête d'aspiration 9 qui se situe entre les deux fraises 1 et 2, légèrement a dessus de l'axe de ces dernières, à l'endroit où les débris de forage sont rejetés par les fraises.The suction pipe 8 of the pump 4 is connected in a known manner to a suction head 9 which is located between the two cutters 1 and 2, slightly above the axis of the latter, at the place where the drilling debris is rejected by the cutters.

La volute de la pompe 4 débouche en 10 vers l'extérieur en direction d'une canalisation verticale 11 représentée en traits interrompus sur la figure 1 qui remonte jusqu'à l'air libre pour y refouler les déchets de forage.The volute of the pump 4 opens at 10 towards the outside in the direction of a vertical pipe 11 shown in broken lines in FIG. 1 which rises to the open air to discharge the drilling waste there.

On voit que, grâce à l'inclinaison de l'axe de la pompe 4, le diamètre de la volute peut avoir une largeur sensiblement supérieure à l'espace utile dont on dispose à l'intérieur du corps 3 de l'engin.It can be seen that, thanks to the inclination of the axis of the pump 4, the diameter of the volute can have a width substantially greater than the useful space which is available inside the body 3 of the machine.

On a représenté à plus grande échelle et en coupe sur la figure 3 un mode de réalisation préféré de la motopompe selon l'invention.There is shown on a larger scale and in section in Figure 3 a preferred embodiment of the motor pump according to the invention.

On retrouve sur cette figure 3 la pompe centrifuge 4 dont l'axe 5 est incliné environ 45° par rapport à la verticale, et qui est surmontée par le moteur hydraulique 7.This FIG. 3 shows the centrifugal pump 4 whose axis 5 is inclined about 45 ° relative to the vertical, and which is surmounted by the hydraulic motor 7.

On a représenté par deux traits mixtes de part et d'autre du dessin la limite d'encombrement de la motopompe, c'est-à-dire l'espace qu'occupe cette motopompe à l'intérieur du corps de l'engin.There is shown by two dashed lines on either side of the drawing the size limit of the motor pump, that is to say the space occupied by this motor pump inside the body of the machine.

Conformément à ce mode de réalisation, la motopompe est supportée par son couvercle inférieur 12 qui est muni de l'orifice central correspondant à la canalisation d'aspiration 8. Le châssis du groupe motopompe est constitué par la plaque 13 qui est inclinée selon un angle complémentaire à celui de l'axe 5 et qui est munie de jambages 14 et 15 pour permettre la fixation de la motopompe sur un support horizontal.According to this embodiment, the motor pump is supported by its lower cover 12 which is provided with the central orifice corresponding to the suction pipe 8. The chassis of the motor pump group consists of the plate 13 which is inclined at an angle complementary to that of axis 5 and which is provided with legs 14 and 15 to allow the attachment of the motor-driven pump to a horizontal support.

La face supérieure de la volute est fermée par un boîtier 17 qui, par l'intermédiaire de son couvercle 18, maintient, grâce aux roulements schématiquement représentés, l'axe 19 du rotor 20 de la pompe centrifuge.The upper face of the volute is closed by a housing 17 which, by means of its cover 18, maintains, by means of the bearings diagrammatically shown, the axis 19 of the rotor 20 of the centrifugal pump.

Conformément à ce mode de réalisation préféré de l'invention, le moteur hydraulique 7 est directement fixé sur le couvercle 18 du boîtier 17, tandis que le plateau 21 du moteur qui est prolongé par une tige 22 est rendu solidaire de l'axe 19 de la pompe grâce à une clavette 23 qui solidarise en rotation la tige 22 du plateau et l'axe 19 du rotor de la pompe.According to this preferred embodiment of the invention, the hydraulic motor 7 is directly fixed to the cover 18 of the housing 17, while the plate 21 of the motor which is extended by a rod 22 is made integral with the axis 19 of the pump by means of a key 23 which secures in rotation the rod 22 of the plate and the axis 19 of the pump rotor.

On a schématiquement représenté sur la figure 3 les têtes 24 des pistons du moteur hydraulique qui sont situés dans des cylindres non représentés dans la partie haute du dessin.Schematically shown in Figure 3 the heads 24 of the pistons of the hydraulic motor which are located in cylinders not shown in the upper part of the drawing.

A la manière connue, le barillet contenant les cylindres du moteur 7 est entraîné en rotation à la même vitesse que le plateau, grâce aux engrenages 25 et 26.In the known manner, the barrel containing the cylinders of the engine 7 is rotated at the same speed as the plate, thanks to the gears 25 and 26.

Pour des raisons de simplicité du dessin, les vis et les boulons n'ont pas été représentés autrement que par leur axe qui est indiqué par un trait mixte.For reasons of simplicity of the drawing, the screws and the bolts have not been shown other than by their axis which is indicated by a dashed line.

On voit que, conformément à l'invention, l'axe 19 qui est incorporé à la face supérieure de la pompe, supporte à sa partie inférieure la turbine 20 et à sa partie supérieure le plateau 21 sur lequel agissent les pistons du moteur hydraulique.It can be seen that, in accordance with the invention, the axis 19 which is incorporated in the upper face of the pump, supports at its lower part the turbine 20 and at its upper part the plate 21 on which the pistons of the hydraulic motor act.

Il en résulte l'obtention d'un dispositif compact et de faible encombrement qui s'est révélé très fiable lors des essais, bien que réalisé en contradiction avec les spécifications d'utilisation, tant des fabricants de pompes centrifuges, que des fabricants de moteurs hydrauliques.This results in the obtaining of a compact and compact device which proved to be very reliable during the tests, although carried out in contradiction with the specifications of use, both of the manufacturers of centrifugal pumps, and of the manufacturers of motors. hydraulic.

L'inclinaison de l'axe de la pompe centrifuge conforme à l'invention permet dans la pratique pour un volume d'encombrement donné d'accroître d'environ 20% le diamètre de la volute, c'est-à-dire d'environ 40% la hauteur de refoulement de la pompe.The inclination of the axis of the centrifugal pump according to the invention allows in practice for a given overall volume to increase by about 20% the diameter of the volute, that is to say about 40% of the pump head.

Pour faciliter la manipulation du groupe motopompe qui est représenté sur le dessin, on a prévu deux passages transversaux 27 disposés parallèlement à l'axe 6 des fraises et intégrés dans le bâti du groupe motopompe qui permettent l'engagement des deux fourches d'un chariot élévateur de manière à assurer une mise en place et une extraction faciles du groupe motopompe pour son entretien.To facilitate handling of the pump unit which is shown in the drawing, two transverse passages 27 are provided, arranged parallel to the axis 6 of the cutters and integrated into the frame of the pump unit which allow the engagement of the two forks of a carriage. elevator so as to ensure easy installation and extraction of the pump set for maintenance.

Il est bien entendu que les modes de réalisation qui ont été décrits ci-dessus ne sont donnés qu'à titre d'exemples et qu'ils pourront recevoir toutes modifications désirables sans sortir pour cela du cadre de l'invention.It is understood that the embodiments which have been described above are given only by way of examples and that they may receive any desirable modifications without departing from the scope of the invention.

Claims (4)

1. Motopompe à débris, destinée à des engins de fraisage pour creuser des tranchées dans le sol, caractérisée par le fait que l'axe de rotation (5) de la pompe (4) est incliné environ 45° par rapport à la verticale dans un plan parallèle aux axes (6) des fraises (1,2).1. Debris motor pump, intended for milling machines for digging trenches in the ground, characterized in that the axis of rotation (5) of the pump (4) is inclined approximately 45 ° relative to the vertical in a plane parallel to the axes (6) of the cutters (1,2). 2. Motopompe selon la revendication 1, caractérisée par le fait que la pompe est entraînée par un moteur hydraulique (7) dont les cylindres sont disposés selon un barillet à axe sensiblement vertical et dont les pistons (24) agissent sur un plateau (21) qui est directement monté sur l'arbre (19,23) du rotor de la pompe (4).2. Motor pump according to claim 1, characterized in that the pump is driven by a hydraulic motor (7), the cylinders of which are arranged in a barrel with a substantially vertical axis and the pistons (24) of which act on a plate (21) which is directly mounted on the shaft (19,23) of the pump rotor (4). 3. Motopompe selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle est supportée par un châssis (14,15) solidaire du couvercle inférieur (12) de la volute de la pompe (4).3. Motor pump according to any one of the preceding claims, characterized in that it is supported by a frame (14,15) secured to the lower cover (12) of the volute of the pump (4). 4. Motopompe selon l'une quelconque des revendications précédentes, caractérisée par le fait que la face supérieure de la volute est fermée par un boîtier (17) qui comporte l'axe commun (19,23) au rotor (20) de la pompe (21) et au plateau du moteur hydraulique.4. Motor pump according to any one of the preceding claims, characterized in that the upper face of the volute is closed by a housing (17) which has the common axis (19,23) to the rotor (20) of the pump (21) and to the hydraulic motor plate.
EP87401298A 1986-06-11 1987-06-10 Motorpump for a fraising device for digging trenches in the ground Expired - Lifetime EP0249555B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8608447A FR2600119B1 (en) 1986-06-11 1986-06-11 MOTOR PUMP FOR MILLING MACHINE FOR Digging Trenches In The Ground
FR8608447 1986-06-11

Publications (2)

Publication Number Publication Date
EP0249555A1 true EP0249555A1 (en) 1987-12-16
EP0249555B1 EP0249555B1 (en) 1990-04-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401298A Expired - Lifetime EP0249555B1 (en) 1986-06-11 1987-06-10 Motorpump for a fraising device for digging trenches in the ground

Country Status (8)

Country Link
EP (1) EP0249555B1 (en)
JP (1) JPH06102907B2 (en)
AT (1) ATE52118T1 (en)
CY (1) CY1707A (en)
DE (2) DE3762358D1 (en)
FR (1) FR2600119B1 (en)
HK (1) HK76493A (en)
SG (1) SG59592G (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369890A1 (en) * 1988-11-18 1990-05-23 SOLETANCHE Société Anonyme dite: Attachment means for the power units of a milling device for digging soil trenches
FR2731024A1 (en) * 1995-02-28 1996-08-30 Sol Comp Du APPARATUS FOR CREATING TRENCHES IN THE SOIL
FR2883893A1 (en) * 2005-03-31 2006-10-06 Cie Du Sol Soc Civ Ile SUCTION MOUTH FOR TRANCHE EXCAVATION MACHINE
EP1978160A1 (en) 2007-04-05 2008-10-08 SOILMEC S.p.A. Pump for hydromill
EP3556942A1 (en) * 2018-04-18 2019-10-23 BAUER Maschinen GmbH Cutter for making a diaphragma wall and method of making such wall
EP4086390A1 (en) * 2021-05-06 2022-11-09 BAUER Maschinen GmbH Trench wall cutter and method for creating a milled slit in the ground

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926023A1 (en) * 1988-09-06 1990-03-15 Schott Glaswerke CVD COATING METHOD FOR PRODUCING LAYERS AND DEVICE FOR CARRYING OUT THE METHOD
JP2532401Y2 (en) * 1991-04-16 1997-04-16 ソニー株式会社 Bias ECR plasma CVD equipment
JP4165437B2 (en) 2004-04-16 2008-10-15 トヨタ自動車株式会社 Power train

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE692832C (en) * 1934-12-23 1940-06-27 Luebecker Maschb Ges Floating suction dredger
FR1037614A (en) * 1951-03-03 1953-09-22 Method of using submerged pumps as suckers comprising a new application of this pump to dredging in general, and in particular to the clearing of dams
GB788435A (en) * 1956-07-16 1958-01-02 Baggermij Bos & Kalis Nv A suction head for a cuttter dredger
US2991568A (en) * 1959-11-19 1961-07-11 Smith Harold Kellogg Digger wheel, pump and motor unit for dredges
GB1207355A (en) * 1966-11-04 1970-09-30 Conrad & Hijsch Nv Improvements in cutting wheels for suction dredges
FR2501305A1 (en) * 1981-03-05 1982-09-10 Toyo Denki Kogyosho Co Ltd SAND PUMP OPERATING UNDER WATER

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE692832C (en) * 1934-12-23 1940-06-27 Luebecker Maschb Ges Floating suction dredger
FR1037614A (en) * 1951-03-03 1953-09-22 Method of using submerged pumps as suckers comprising a new application of this pump to dredging in general, and in particular to the clearing of dams
GB788435A (en) * 1956-07-16 1958-01-02 Baggermij Bos & Kalis Nv A suction head for a cuttter dredger
US2991568A (en) * 1959-11-19 1961-07-11 Smith Harold Kellogg Digger wheel, pump and motor unit for dredges
GB1207355A (en) * 1966-11-04 1970-09-30 Conrad & Hijsch Nv Improvements in cutting wheels for suction dredges
FR2501305A1 (en) * 1981-03-05 1982-09-10 Toyo Denki Kogyosho Co Ltd SAND PUMP OPERATING UNDER WATER

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369890A1 (en) * 1988-11-18 1990-05-23 SOLETANCHE Société Anonyme dite: Attachment means for the power units of a milling device for digging soil trenches
FR2639419A1 (en) * 1988-11-18 1990-05-25 Soletanche DEVICE FOR FASTENING MOTOR BLOCKS OF A MILLING APPARATUS FOR HOLLOWING TRENCHES IN THE GROUND
US4989824A (en) * 1988-11-18 1991-02-05 Societe Anonyme Dite - Soletanche Motor block fastening device for a trenching machine
FR2731024A1 (en) * 1995-02-28 1996-08-30 Sol Comp Du APPARATUS FOR CREATING TRENCHES IN THE SOIL
EP0730064A1 (en) * 1995-02-28 1996-09-04 Compagnie Du Sol Trenching apparatus for digging deep trenches
FR2883893A1 (en) * 2005-03-31 2006-10-06 Cie Du Sol Soc Civ Ile SUCTION MOUTH FOR TRANCHE EXCAVATION MACHINE
EP1707687A3 (en) * 2005-03-31 2007-11-07 Compagnie du Sol Suction mouth for a trench excavating machine.
EP1978160A1 (en) 2007-04-05 2008-10-08 SOILMEC S.p.A. Pump for hydromill
EP3556942A1 (en) * 2018-04-18 2019-10-23 BAUER Maschinen GmbH Cutter for making a diaphragma wall and method of making such wall
US11286637B2 (en) 2018-04-18 2022-03-29 Bauer Maschinen Gmbh Trench cutter and method for producing a cut trench in the soil
EP4086390A1 (en) * 2021-05-06 2022-11-09 BAUER Maschinen GmbH Trench wall cutter and method for creating a milled slit in the ground
WO2022233672A1 (en) * 2021-05-06 2022-11-10 Bauer Maschinen Gmbh Diaphragm wall cutter and method for cutting a slot in the ground

Also Published As

Publication number Publication date
FR2600119B1 (en) 1988-08-26
ATE52118T1 (en) 1990-05-15
FR2600119A1 (en) 1987-12-18
JPS6367332A (en) 1988-03-26
JPH06102907B2 (en) 1994-12-14
CY1707A (en) 1994-01-14
DE249555T1 (en) 1988-06-09
SG59592G (en) 1993-05-21
EP0249555B1 (en) 1990-04-18
DE3762358D1 (en) 1990-05-23
HK76493A (en) 1993-08-06

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