EP0167090B2 - Cutting wheel apparatus for excavating cut-off trenches - Google Patents

Cutting wheel apparatus for excavating cut-off trenches Download PDF

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Publication number
EP0167090B2
EP0167090B2 EP85107854A EP85107854A EP0167090B2 EP 0167090 B2 EP0167090 B2 EP 0167090B2 EP 85107854 A EP85107854 A EP 85107854A EP 85107854 A EP85107854 A EP 85107854A EP 0167090 B2 EP0167090 B2 EP 0167090B2
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EP
European Patent Office
Prior art keywords
gear
drive motor
slotted wall
cutting
milling cutter
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
Application number
EP85107854A
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German (de)
French (fr)
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EP0167090A2 (en
EP0167090A3 (en
EP0167090B1 (en
Inventor
Karlheinz Dr. Ing. Bauer
Maximilian Ing. Grad. Arzberger
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Bauer Spezialtiefbau GmbH
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Bauer Spezialtiefbau GmbH
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Priority to AT85107854T priority Critical patent/ATE36881T1/en
Publication of EP0167090A2 publication Critical patent/EP0167090A2/en
Publication of EP0167090A3 publication Critical patent/EP0167090A3/en
Application granted granted Critical
Publication of EP0167090B1 publication Critical patent/EP0167090B1/en
Publication of EP0167090B2 publication Critical patent/EP0167090B2/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/001—Drilling a non circular hole
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • 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
    • 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
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
    • E02F3/9237—Suction wheels with axis of rotation in transverse direction of the longitudinal axis of the suction pipe
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units

Definitions

  • the invention relates to a trench cutter for producing a trench wall in the floor according to the preamble of independent claim 1.
  • DE-A-3 007 457 shows a drive for a bucket wheel mounted on the bucket wheel arm of a bucket wheel excavator with a planetary gear inside the bucket wheel body.
  • the invention has for its object to provide a generic trench wall cutter, in which a particularly large torque is available on the cutting wheels for a given power of the drive motor, and in which at the same time the cutting wheels have a very high effective cutting width in relation to the entire slot width.
  • the inventive arrangement of the drive motor on the milling frame makes it possible for the space available in the milling wheels to be used exclusively for generating a very high torque.
  • the weight of the drive motor contributes to the generation of the high, required contact pressure, which is necessary for propelling the trench cutter in a hard floor.
  • the high torque per cutting tooth and a high weight for the contact pressure can be achieved on the one hand, particularly in the case of concrete or rocky floors.
  • a sufficient number of cutting teeth can be provided, which is necessary so that the milled material has a correspondingly small grain size, so that it is suitable for suction.
  • the gear device which connects the drive motor to the milling gears, is at least partially arranged in recesses in the end shield. This makes it possible to transmit the torque from the drive motor to the cutting wheel gear in an extremely space-saving manner.
  • the initially low torque delivered by the gear mechanism is converted into a very high torque in the cutting wheel gear by reducing the speed (up to approx. 20 revolutions per minute) and simultaneously increasing the effective lever arm.
  • the cutting wheel gear is designed as a multi-stage planetary gear.
  • the drive motor can be designed as an electric motor or as a hydraulic motor, and in both cases the milling drums can be replaced without having to open hydraulic lines.
  • the gear device arranged between the drive motor and the milling gears can be designed as a bevel gear set with a transmission shaft.
  • a constructive measure all that is required is that in the Bore plate is drilled, which may also have a small diameter, since the drive shaft is also dimensioned relatively small, since the input torque to be transmitted by the drive motor is small.
  • the bevel gear it is also possible to transfer the input torque from the drive motor to the cutter gear via a chain gear with a chain and two sprockets.
  • the gears are guided vertically between the drive motor and the axis of rotation of the cutting wheels, since on the one hand the weight of the motor is fully used for the contact pressure can be and on the other hand the torque is given to the milling gear in the shortest possible way.
  • the bearing plate can be made particularly thin in its vertically standing, flat section, with the result that the effective width of the cutting wheels can be very large in relation to the entire slot width .
  • the end shield is also advantageously designed so that its lower edge ends at a distance above the lower edge of the cutting wheels.
  • a drive motor and a gear device are provided separately for each cutter wheel gear.
  • the sections of the gear mechanism extending beyond the end shield can be encapsulated with a housing, so that on the one hand the gear is protected against external influences and on the other hand the operating personnel cannot get into rotating parts.
  • the gear devices arranged inside the end shield can advantageously also be arranged in such a way that they run essentially V-shaped in the end shield plane and essentially parallel and at a distance from one another perpendicular to the end shield plane. This means that each milling gear can be supplied with the torque required to drive it separately.
  • Each planetary gear of the two cutter wheels arranged parallel to the end shield is driven separately, but it is possible both in the case of the V-shaped arrangement of the gear devices and in the case of the vertical arrangement of a single bevel gear or chain gear to drive the two cutter wheels of a cutter wheel set.
  • the two cutting wheels of a cutting wheel set are driven via a single shaft, the cutting wheels rotating in the same direction.
  • the trench wall cutter according to the invention has a tooth coupling, which is arranged between the drive motor and the transmission shaft of a bevel gear, and enables the milling drums to be changed quickly and easily.
  • the trench wall cutter 1 consists essentially of a support frame 5 held by a support cable 3, to which a suction device with a pump 7 is attached.
  • the drive motors 9 for the cutter wheels 11 are attached to the cutter frame 5.
  • Two bearing plates 13, in which the milling wheels 11 are rotatably received, are also firmly connected to the milling frame 5.
  • the trench wall cutter 1 is moved forward according to the arrow 15 shown.
  • the diaphragm wall milling machine 1 shown only the front milling wheels 11 of the two milling wheels of the two milling wheel sets 10 arranged one behind the other can be seen in the front view shown.
  • the rear milling wheels in each case, like the front milling wheels 11 shown, run parallel to the end shield 13.
  • the two cutting wheel sets 10 rotate in opposite directions, as indicated by the two arrows in FIG. 1, and thus feed the milled material to the suction device with pump 7.
  • a shaft 17 of a bevel gear 19 leads vertically downward from the drive motor 9 arranged fixedly in the milling frame. From the bevel gear 19, the torque is transmitted, for example, to a sun gear shaft 21 by two planetary gears, which are each arranged within one of the cutting wheels 11.
  • the arrow 15 in turn indicates the feed direction in which the trench cutter is moved forward in its work.
  • FIG. 3 The arrangement according to the invention from FIG. 2 is shown in side view in FIG. 3.
  • the symmetrical arrangement of the two milling wheels 11 with respect to the bearing plate 13 can be clearly seen.
  • only a bevel gear 23 needs to be arranged on the sun gear shaft 21 in order to transmit the drive torque to the sun gear shaft 21 and thus to the planetary gears of the cutting wheels.
  • the arrangement of the drive units according to the invention shown in the front and side views in FIGS. 4 and 5 essentially corresponds in structure to the arrangement shown in FIGS. 2 and 3.
  • a chain gear 27 is provided instead of the bevel gear as a torque transmission device between the drive motor 9 and the sun gear shaft 21 of the planetary gear.
  • the chain transmission 27 consists essentially of a chain wheel 29 fastened to the drive motor, a chain 31 and a chain wheel 33 arranged on the sun wheel shaft.
  • the chain 31 connects the drive motor 9 and the sun wheel shaft 21 in the vertical direction and is protected on the one hand by the fact that it extends in a recess in the end shield 13 and on the other hand by the fact that it is encapsulated in the area between the drive motor 9 and the end shield 13, ie it is protected in this area with a housing 35 .
  • a fast-running chain 31 With this straight and direct transmission of the drive torque from the motor 9 to the sun gear shaft 21 and the associated planetary gear of the cutting wheels, it is possible to use a fast-running chain 31 with initially low drive torque, the torque in the planetary gear being increased in that the Speed is reduced and at the same time a high torque is generated by the large lever arms available in the milling wheels.
  • the geometric conditions in the milling wheels 11 are again so favorable here because the drive motor 9 is not arranged in the area of the milling wheels, but in the milling frame.
  • each cutter wheel 11, 11 ' is driven separately by a drive motor 9, 9' via a bevel gear 37, 37 'and a sun gear shaft 41, 41' of a planetary gear.
  • the Antribswellen 39, 39 'of the bevel gear 37, 37' seen from the front V-shaped between the drive motors 9.9 'and the output pinions of the bevel gear 37, 37' are arranged.
  • the two shafts 39, 39 ' run essentially parallel and at a distance from the center plane of the end shield 13.
  • the shafts of the bevel gearboxes shown in FIGS. 2 and 3 and 6 and 7 can be embodied encapsulated in their section between the drive motors 9, 9 'and the end shield 13.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Paleontology (AREA)
  • Retarders (AREA)
  • Gear Transmission (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Road Repair (AREA)

Abstract

A slotted wall milling cutter for producing a slotted wall in the ground has a drive motor fixed to the cutter frame and a gear means positioned between the drive motor and two cutting wheel gears and which is partly arranged in recesses of a bearing bracket. The cutting wheel gear is constructed as a multistage planetary gear. A particularly high torque is made available on the cutting wheels with this arrangement. In addition, the cutting wheels can be constructed with a very high effective cutting width compared with the total slot width.

Description

Die Erfindung betrifft eine Schlitzwandfräse zur Herstellung einer Schlitzwand im Boden gemäß dem Oberbegriff des unabhängigen Anspruchs 1.The invention relates to a trench cutter for producing a trench wall in the floor according to the preamble of independent claim 1.

Aus der US-A-3,894,587 ist eine gattungsgemäße Schlitzwandfräse bekannt, bei welcher zum Antrieb innerhalb der Lage der Fräsräder ein Hydraulikmotor und die Getriebeeinheiten angeordnet sind. Die Ölversorgung erfolgt hierbei über Bohrungen im Halterahmen für die Fräsräder. Bei einer derartigen Schlitzwandfräse ist es nachteilig, daß innerhalb der Fräsräder sowohl der Antriebsmotor als auch die Getriebeeinheiten untergebracht werden müssen, so daß hier wenig Raum zur Verfügung steht, welcher zur Erzeugung eines hohen Drehmomentes genutzt werden könnte. Weiterhin ist an diesen Vorrichtungen nachteilig, daß bei einem Getriebewechsel immer ein gewisser Teil des Hydrauliköls aus den Leitungen ausläuft und verlorengeht.From US-A-3,894,587 a generic trench wall cutter is known in which a hydraulic motor and the gear units are arranged for driving within the position of the cutting wheels. Oil is supplied through holes in the holding frame for the milling wheels. With such a trench wall cutter, it is disadvantageous that both the drive motor and the gear units must be accommodated within the cutting wheels, so that there is little space available here which could be used to generate a high torque. A further disadvantage of these devices is that a certain part of the hydraulic oil always leaks out of the lines and is lost when the transmission is changed.

Die DE-A-3 007 457 zeigt einen Antrieb für einen am Schaufelradausleger eines Schaufelradbaggers gelagertes Schaufelrad mit einem Planetengetriebe im Innern des Schaufelradkörpers.DE-A-3 007 457 shows a drive for a bucket wheel mounted on the bucket wheel arm of a bucket wheel excavator with a planetary gear inside the bucket wheel body.

Ferner ist in der DE-C-288 984 eine Schrämm-Maschine offenbart, bei welcher zwei Räder unmittelbar über ein Kegelradgetriebe beaufschlagt werden.Furthermore, a cutting machine is disclosed in DE-C-288 984, in which two wheels are acted upon directly via a bevel gear.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Schlitzwandfräse zu schaffen, bei welcher bei einer vorgegebenen Leistung des Antriebsmotors an den Fräsrädern ein besonders großes Drehmoment zur Verfügung steht, und bei welcher gleichzeitig die Fräsräder im Verhältnis zur gesamten Schlitzbreite eine sehr hohe wirksame Fräsbreite aufweisen.The invention has for its object to provide a generic trench wall cutter, in which a particularly large torque is available on the cutting wheels for a given power of the drive motor, and in which at the same time the cutting wheels have a very high effective cutting width in relation to the entire slot width.

Diese Aufgabe wird gemäß dem kennzeichnenden Teil des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved according to the characterizing part of claim 1. Advantageous developments of the invention are described in the subclaims.

Durch die erfindungsgemäße Anordnung des Antriebsmotors am Fräsenrahmen ist es möglich, daß der in den Fräsrädern zur Verfügung stehende Raum ausschließlich zur Erzeugung eines sehr hohen Drehmomentes genutzt werden kann. Durch diese Anordnung ist es auch weiterhin möglich, daß das Gewicht des Antriebsmotors zur Erzeugung des hohen, erforderlichen Anpreßdruckes beiträgt, welcher zum Vortrieb der Schlitzwandfräse in einem harten Boden notwendig ist. Somit kann insbesondere bei Beton- oder Felsböden einerseits das hohe Drehmoment pro Schneidzahn und andererseits ein hohes Gewicht für den Anpreßdruck erzielt werden. Als Folge davon wiederum kann eine ausreichende Anzahl von Schneidzähnen vorgesehen werden, welche erforderlich ist, damit das Fräsgut eine entsprechend kleine Korngröße aufweist, so daß es für die Absaugung geeignet ist.
Weiterhin ist gemäß der Erfindung vorgesehen, daß die Getriebeeinrichtung, welche den Antriebsmotor mit den Fräsgetrieben verbindet wenigstens teilweise in Ausnehmungen des Lagerschildes angeordnet ist. Dadurch ist es möglich, auf äußerst platzparende Weise das Drehmoment von Antriebsmotor auf die Fräsradgetriebe zu übertragen. Das von der Getriebeeinrichtung angelieferte, zunächst noch geringe Drehmomente wird in den Fräsradgetrieben durch Verringerung der Drehzahl (bis ca. 20 Umdrehungen pro Minute) und gleichzeitiger Vergrößerung des wirksamen Hebelarmes in ein sehr hohes Drehmoment umgewandelt. Dies wird gemäß der Erfindung dadurch erreicht, daß die Fräsradgetriebe als mehrstufige Planetengetriebe ausgebildet sind.The inventive arrangement of the drive motor on the milling frame makes it possible for the space available in the milling wheels to be used exclusively for generating a very high torque. By this arrangement it is also possible that the weight of the drive motor contributes to the generation of the high, required contact pressure, which is necessary for propelling the trench cutter in a hard floor. This means that the high torque per cutting tooth and a high weight for the contact pressure can be achieved on the one hand, particularly in the case of concrete or rocky floors. As a consequence, a sufficient number of cutting teeth can be provided, which is necessary so that the milled material has a correspondingly small grain size, so that it is suitable for suction.
Furthermore, it is provided according to the invention that the gear device, which connects the drive motor to the milling gears, is at least partially arranged in recesses in the end shield. This makes it possible to transmit the torque from the drive motor to the cutting wheel gear in an extremely space-saving manner. The initially low torque delivered by the gear mechanism is converted into a very high torque in the cutting wheel gear by reducing the speed (up to approx. 20 revolutions per minute) and simultaneously increasing the effective lever arm. This is achieved according to the invention in that the cutting wheel gear is designed as a multi-stage planetary gear.

Der Antriebsmotor kann als Elektromotor oder als Hydraulikmotor ausgebildet sein, wobei in beiden Fällen die Frästrommeln gewechselt werden können, ohne daß Hydraulikleitungen geöffnet werden müssen.The drive motor can be designed as an electric motor or as a hydraulic motor, and in both cases the milling drums can be replaced without having to open hydraulic lines.

Die zwischen dem Antriebsmotor und den Fräsgetrieben angeordnete Getriebeeinrichtung kann als Kegelradgetriebesatz mit einer Übertragungswelle ausgebildet sein. Als konstruktive Maßnahme ist hierzu lediglich erforderlich, daß in dem Lagerschild eine Bohrung eingebracht ist, welche zudem einen kleinen Durchmesser haben kann, da auch die Antriebswelle relativ klein dimensioniert ist, da das vom Antriebsmotor zu übertragende Eingangsdrehmoment klein ist. Als Alternative zu dem Kegelradgetriebe ist es möglich, das Eingangsdrehmoment auch über ein Kettengetriebe mit einer Kette und zwei Kettenräder, vom Antriebsmotor auf die Fräsradgetriebe zu übertragen. Sowohl im Falle der Drehmomentübertragung duch ein Kegelradgetriebe als auch im Fall der Drehmomentübertragung durch ein Kettengetriebe ist es vorteilhaft, wenn die Getriebe vertikal zwischen dem Antriebsmotor und der Drehachse der Fräsräder geführt sind, da dabei einerseits das Gewicht des Motors in vollem Umfang für den Anpreßdruck genutzt werden kann und andererseits das Drehmoment auf kürzestem Wege an die Fräsgetriebe abgegeben wird.
Bei diesen Ausführungsbeispielen der Schlitzwandfräse mit einem Kegelradgetriebe oder einem Kettengetriebe wird besonders deutlich, daß das Lagerschild in seinem vertikal stehenden, ebenen Abschnitt besonders dünn ausgebildet sein kann, mit der Folge, daß die wirksame Breite der Fräsräder im Verhältnis zur gesamten Schlitzbreite sehr groß sein kann. Das Lagerschild ist weiterhin in vorteilhafter Weise so ausgebildet, daß seine Unterkante im Abstand über der Unterkante der Fräsräder endet.The gear device arranged between the drive motor and the milling gears can be designed as a bevel gear set with a transmission shaft. As a constructive measure, all that is required is that in the Bore plate is drilled, which may also have a small diameter, since the drive shaft is also dimensioned relatively small, since the input torque to be transmitted by the drive motor is small. As an alternative to the bevel gear, it is also possible to transfer the input torque from the drive motor to the cutter gear via a chain gear with a chain and two sprockets. Both in the case of torque transmission by a bevel gear as well as in the case of torque transmission by a chain gear, it is advantageous if the gears are guided vertically between the drive motor and the axis of rotation of the cutting wheels, since on the one hand the weight of the motor is fully used for the contact pressure can be and on the other hand the torque is given to the milling gear in the shortest possible way.
In these embodiments of the trench cutter with a bevel gear or a chain gear, it is particularly clear that the bearing plate can be made particularly thin in its vertically standing, flat section, with the result that the effective width of the cutting wheels can be very large in relation to the entire slot width . The end shield is also advantageously designed so that its lower edge ends at a distance above the lower edge of the cutting wheels.

Gemäß einer weiterer vorteilhaften Ausgestaltung der Schlitzwandfräse sind für jedes Fräsradgetriebe gesondert eine Antriebsmotor sowie eine Getriebeeinrichtung vorgesehen. Darüber hinaus ist es ohne weiteres möglich, für jedes Fräsradgetriebe mehrere Antriebsmotoren und mehrere Getriebeeinrichtungen vorzusehen, so daß die Gesamtleistung der Schlitzwandfräse entsprechend den Anforderungen erhöht werden kann.According to a further advantageous embodiment of the trench wall cutter, a drive motor and a gear device are provided separately for each cutter wheel gear. In addition, it is readily possible to provide a plurality of drive motors and a plurality of gear units for each cutting wheel gear, so that the overall performance of the trench wall cutter can be increased in accordance with the requirements.

Wieterhin können die über das Lagerschild hinausreichenden Abschnitte der Getriebeeinrichtungen mit einem Gehäuse gekapselt ausgeführt sein, so daß einerseits das Getriebe gegen Einwirkungen von außen geschützt ist und andererseits das Bedienungspersonal nicht in rotierende Teile geraten kann.Furthermore, the sections of the gear mechanism extending beyond the end shield can be encapsulated with a housing, so that on the one hand the gear is protected against external influences and on the other hand the operating personnel cannot get into rotating parts.

Die innerhalb des Lagerschildes angeordneten Getriebeeinrichtungen können in vorteilhafter Weise auch so angeordnet sein, daß sie in der Lagerschildebene im wesentlichen V-förmig und senkrecht zur Lagerschildebene im wesentlichen parallel und im Abstand zueinander verlaufen. Damit kann auf elegante Weise jedem Fräsgetriebe gesondert das zum Antrieb erforderliche Drehmoment zugeführt werden. Jedes Planetengetriebe der beiden parallel zum Lagerschild angeordneten Fräsräder wird gesondert angetrieben, es ist jedoch sowohl im Falle der V-förmigen Anordnung der Getriebeeinrichtungen als auch im Falle der vertikalen Anordnung eines einzelnen Kegelradgetriebes oder Kettengetriebes möglich, die beiden Fräsräder eines Fräsradsatzes gemeisen anzutreiben. Im Falle des vertikal angeordneten Kegelrad- oder Kettenradgetriebes werden dabei die beiden Fräsräder eines Fräsradsatzes über eine einzige Welle angetrieben, wobei sich die Fräsräder gleichsinnig drehen.The gear devices arranged inside the end shield can advantageously also be arranged in such a way that they run essentially V-shaped in the end shield plane and essentially parallel and at a distance from one another perpendicular to the end shield plane. This means that each milling gear can be supplied with the torque required to drive it separately. Each planetary gear of the two cutter wheels arranged parallel to the end shield is driven separately, but it is possible both in the case of the V-shaped arrangement of the gear devices and in the case of the vertical arrangement of a single bevel gear or chain gear to drive the two cutter wheels of a cutter wheel set. In the case of the vertically arranged bevel gear or sprocket gear, the two cutting wheels of a cutting wheel set are driven via a single shaft, the cutting wheels rotating in the same direction.

Als weitere vorteilhafte Ausgestaltung weist die erfindungsgemäße Schlitzwandfräse eine Zahnkupplung auf, welche zwischen dem Antriebsmotor und der Übertragungswelle eines Kegelradgetriebes angeordnet ist, und ein rasches und problemloses Wechseln der Fräswalzen ermöglicht.As a further advantageous embodiment, the trench wall cutter according to the invention has a tooth coupling, which is arranged between the drive motor and the transmission shaft of a bevel gear, and enables the milling drums to be changed quickly and easily.

Durch die erfindungsgemäße Anordnung des Antriebsmotors im Fräsenrahmen ist es auch möglich, handelsübliche Hydraulik- oder Elektromotoren entsprechender Größe zu verwenden, da vom Einbauraum her keine Beschränkungen bestehen.Due to the arrangement of the drive motor in the milling frame according to the invention, it is also possible to use commercially available hydraulic or electric motors of appropriate size, since there are no restrictions in terms of installation space.

Nachfolgend sind drei Ausführungsbeispiele der Erfindung anhand der Zeichnung im einzelnen beschrieben. Dabei zeigen:

  • Figur 1 den grundsätzlichen Aufbau einer Schlitzwandfräse in Vorderansicht,
  • Figur 2 schematisch die erfindungsgemäße Anordnung der Antriebseinheiten für ein Fräsrad mit Kegelradgetriebe in einer Vorderansicht,
  • Figur 3 die erfindungsgemäße Anordnung aus Figur 2 in der Seitenansicht, wobei beide Fräsräder eines Fräsradsatzes dargestellt sind,
  • Figur 4 schematisch die erfindungsgemäße Anordnung der Antriebseinheiten mit einem gekapselten Kettengetriebe und einem Fräsrad in der Vorderansicht,
  • Figur 5 die erfindungsgemäße Anordnung aus Fig. 4 in der Seitenansicht mit den zwei Fräsrädern eines Fräsradsatzes,
  • Figur 6 schematisch die erfindungsgemäße Anordnung der Antriebseinheiten mit zwei Kegelradgetrieben und einem Fräsrad in der Vorderansicht sowie
  • Figur 7 die erfindungsgemäße Anordnung aus Fig. 6 mit den zwei Fräsrädern eines Fräsradsatzes in der Seitenansicht.
Three exemplary embodiments of the invention are described in detail below with reference to the drawing. Show:
  • FIG. 1 shows the basic structure of a trench cutter in front view,
  • FIG. 2 shows a schematic front view of the arrangement of the drive units for a milling wheel with bevel gear,
  • 3 shows the arrangement according to the invention from FIG. 2 in a side view, both cutting wheels of a cutting wheel set being shown,
  • FIG. 4 schematically, the front view of the arrangement of the drive units with an encapsulated chain gear and a milling wheel,
  • 5 shows the arrangement according to the invention from FIG. 4 in a side view with the two cutting wheels of a cutting wheel set,
  • Figure 6 schematically shows the arrangement of the drive units according to the invention with two bevel gear and a milling wheel in the front view and
  • 7 shows the arrangement according to the invention from FIG. 6 with the two cutting wheels of a cutting wheel set in a side view.

Gemäß Figur 1 besteht die Schlitzwandfräse 1 im wesentlichen aus einem von einem Tragseil 3 gehaltenen Tragrahmen 5, an dem eine Absaugvorrichtung mit Pumpe 7 befestigt ist. Gemäß der Erfingung sind die Antriebsmotoren 9 für die Fräsenräder 11 am Fräsenrahmen 5 befestigt. Zwei Lagerschilder 13, in welchen die Fräsräder 11 drehbar aufgenommen sind, sind ebenfalls fest mit dem Fräsenrahmen 5 verbunden. Die Schlitzwandfräse 1 wird bei ihrem Einsatz gemäß dem eingezeichneten Pfeil 15 vorwärts bewegt. Bei der gezeigten Schlitzwandfräse 1 sind in der gezeigten Vorderansicht jeweils nur die vorderen Fräsräder 11 der beiden hintereinander angeordneten Fräsräder der zwei Fräsradsätze 10 zu sehen. Die jeweils hinteren Fräsräder verlaufen ebenso wie die gezeichneten vorderen Fräsräder 11 parallel zum Lagerschild 13.According to Figure 1, the trench wall cutter 1 consists essentially of a support frame 5 held by a support cable 3, to which a suction device with a pump 7 is attached. According to the invention, the drive motors 9 for the cutter wheels 11 are attached to the cutter frame 5. Two bearing plates 13, in which the milling wheels 11 are rotatably received, are also firmly connected to the milling frame 5. When used, the trench wall cutter 1 is moved forward according to the arrow 15 shown. In the diaphragm wall milling machine 1 shown, only the front milling wheels 11 of the two milling wheels of the two milling wheel sets 10 arranged one behind the other can be seen in the front view shown. The rear milling wheels in each case, like the front milling wheels 11 shown, run parallel to the end shield 13.

Im Arbeitseinsatz drehen sich die beiden Fräsradsätze 10 wie it den beiden Pfeilen in Fig. 1 angedeutet gegensinnig und führen so das Fräsgut der Absaugvorrichtung mit Pumpe 7 zu.During work, the two cutting wheel sets 10 rotate in opposite directions, as indicated by the two arrows in FIG. 1, and thus feed the milled material to the suction device with pump 7.

In Fig. 2 ist schematisch die erfindungsgemäße Anordnung der Antriebseinheiten für das Fräsrad 11 dargestellt. Von dem fest im Fräsrahmen angeordneten Antriebsmotor 9 führt eine Welle 17 eines Kegelradgetriebes 19 vertikal nach unten. Vom Kegelradgetriebe 19 wird das Drehmoment beispielsweise auf eine Sonnenradwelle 21 von zwei Planetengetrieben übertragen, welche jeweils innerhalb eines der Fräsräder 11 angeordnet sind. Mit dem Pfeil 15 ist wiederum die Vorschubrichtung angedeutet, in welcher die Schlitzwandfräse in ihrem Arbeitseinsatz vorwärts bewegt wird.2 schematically shows the arrangement of the drive units for the milling wheel 11 according to the invention. A shaft 17 of a bevel gear 19 leads vertically downward from the drive motor 9 arranged fixedly in the milling frame. From the bevel gear 19, the torque is transmitted, for example, to a sun gear shaft 21 by two planetary gears, which are each arranged within one of the cutting wheels 11. The arrow 15 in turn indicates the feed direction in which the trench cutter is moved forward in its work.

In Fig. 3 ist die erfindungsgemäße Anordnung von Fig. 2 in der Seitenansicht gezeigt. Hierbei ist die symmetrische Anordnung der beiden Fräsräder 11 bezüglich des Lagerschildes 13 deutlich zu sehen. In vorteilhafter Weise braucht auf der Sonnenradwelle 21 lediglich ein Kegelrad 23 angeordnet zu sein, um das Antriebsdrehmoment auf die Sonnenradwelle 21 und somit in die Planetengetriebe der Fräsräder zu übertragen.The arrangement according to the invention from FIG. 2 is shown in side view in FIG. 3. Here, the symmetrical arrangement of the two milling wheels 11 with respect to the bearing plate 13 can be clearly seen. Advantageously, only a bevel gear 23 needs to be arranged on the sun gear shaft 21 in order to transmit the drive torque to the sun gear shaft 21 and thus to the planetary gears of the cutting wheels.

Aus den Figuren 2 und 3 ist ersichtlich, daß zur Durchführung der Welle 17 durch das Lagerschild 13 lediglich eine Bohrung vorgesehen sein muß, so daß die Drehmomentübertragung auf relativ kurzem Wege geschehen kann und die Welle 17 dabei durch das Lagerschild 13 geschützt ist. Weiterhin kann der große Innendurchmesser der Fräsräder 11 genutzt werden, um ein hohes Drehmoment zu gewinnen, welches dann an den Zähnen 25 der Fräsräder 11 zur Verfügung steht.It can be seen from FIGS. 2 and 3 that only one hole has to be provided for the shaft 17 to pass through the end plate 13, so that the torque transmission can take place in a relatively short way and the shaft 17 is protected by the end plate 13. Furthermore, the large inner diameter of the milling wheels 11 can be used to obtain a high torque, which is then available on the teeth 25 of the milling wheels 11.

Die in den Figuren 4 und 5 in der Vorder- und Seitenansicht dargestellte erfindungsgemäße Anordnung der Antriebseinheiten entspricht im Aufbau im wesentlichen der in den Figuren 2 und 3 gezeigten Anordnung. Im Unterschied hierzu ist statt des Kegelradgetriebes als Drehmomentübertragungseinrichtung zwischen Antriebsmotor 9 und der Sonnenradwelle 21 der Planetengetriebe ein Kettengetriebe 27 vorgesehen. Das Kettengetriebe 27 besteht im wesentlichen aus einem am Antriebsmotor befestigten Kettenrad 29, einer Kette 31 und einem auf der Sonnenradwelle angeordneten Kettenrad 33. Die Kette 31 verbindet dabei den Antriebsmotor 9 und die Sonnenradwelle 21 in vertikaler Richtung und ist einerseits dadurch geschützt, daß sie in einer Ausnehmung im Lagerschild 13 verläuft und andererseits dadurch, daß sie in dem Bereich zwischen Antriebsmotor 9 und Lagerschild 13 gekapselt ausgeführt ist, d.h., sie ist in diesem Bereich mit einem Gehäuse 35 geschützt. Mit dieser geraden und direkten Übertragung des Antriebsmomentes vom Motor 9 auf die Sonnenradwelle 21 und die damit verbundenen Planetengetriebe der Fräsräder ist es möglich, eine schnell laufende Kette 31 mit zunächst geringem Antriebsmoment zu verwenden, wobei das Drehmoment in den Planetengetrieben dadurch erhöht wird, daß die Drehzahl verringert wird und gleichzeitig durch die in den Fräsrädern zur Verfügung stehenden großen Hebelarme ein hohes Drehmoment erzeugt wird. Die geometrischen Verhältnisse in den Fräsrädern 11 sind hier wiederum deswegen so günstig, weil der Antriebsmotor 9 nicht im Bereich der Fräsräder, sondern im Fräsenrahmen angeordnet ist.The arrangement of the drive units according to the invention shown in the front and side views in FIGS. 4 and 5 essentially corresponds in structure to the arrangement shown in FIGS. 2 and 3. In contrast to this, instead of the bevel gear as a torque transmission device between the drive motor 9 and the sun gear shaft 21 of the planetary gear, a chain gear 27 is provided. The chain transmission 27 consists essentially of a chain wheel 29 fastened to the drive motor, a chain 31 and a chain wheel 33 arranged on the sun wheel shaft. The chain 31 connects the drive motor 9 and the sun wheel shaft 21 in the vertical direction and is protected on the one hand by the fact that it extends in a recess in the end shield 13 and on the other hand by the fact that it is encapsulated in the area between the drive motor 9 and the end shield 13, ie it is protected in this area with a housing 35 . With this straight and direct transmission of the drive torque from the motor 9 to the sun gear shaft 21 and the associated planetary gear of the cutting wheels, it is possible to use a fast-running chain 31 with initially low drive torque, the torque in the planetary gear being increased in that the Speed is reduced and at the same time a high torque is generated by the large lever arms available in the milling wheels. The geometric conditions in the milling wheels 11 are again so favorable here because the drive motor 9 is not arranged in the area of the milling wheels, but in the milling frame.

Der in den Figuren 6 und 7 gezeigte Aufbau der Antriebseinheiten gemäß der Erfindung entspricht im wesentlichen dem in den Figuren 2 und 3 dargestellten Aufbau. Im Unterschied hierzu wird jedes Fräsrad 11, 11′ gesondert von einem Antriebsmotor 9, 9′ über ein Kegelradgetriebe 37, 37′ und eine Sonnenradwelle 41, 41′ eines Planetengetriebes angetrieben. Aus Figur 6 ist ersichtlich, daß die Antribswellen 39, 39′ der Kegelradgetriebe 37, 37′ von vorne gesehen V-förmig zwischen den Antriebsmotoren 9,9′ und den Abtriebsritzeln der Kegelradgetriebe 37, 37′ angeordnet sind. Seitlich gesehen verlaufen die beiden Wellen 39,39′ im wesentlichen parallel und im Abstand zu der Mittenebene des Lagerschildes 13. In Fig.7 sind wegen der einfacheren Darstellung der Antriebsmotor 9′, die Welle 39′, das Kegelradgetriebe 37′ und die Sonnenradwelle 41′ in nach innen gedrehter Position gezeichnet.The structure of the drive units according to the invention shown in FIGS. 6 and 7 essentially corresponds to the structure shown in FIGS. 2 and 3. In contrast, each cutter wheel 11, 11 'is driven separately by a drive motor 9, 9' via a bevel gear 37, 37 'and a sun gear shaft 41, 41' of a planetary gear. From Figure 6 it can be seen that the Antribswellen 39, 39 'of the bevel gear 37, 37' seen from the front V-shaped between the drive motors 9.9 'and the output pinions of the bevel gear 37, 37' are arranged. Seen from the side, the two shafts 39, 39 'run essentially parallel and at a distance from the center plane of the end shield 13. In FIG. 7, because of the simpler representation, the drive motor 9', the shaft 39 ', the bevel gear 37' and the sun gear shaft 41 'Drawn in the rotated position.

Die in den Figuren 2 und 3 sowie 6 und 7 gezeigten Wellen der Kegelradgetriebe können in ihrem Abschnitt zwischen den Antriebsmotoren 9,9′ und dem Lagerschild 13 gekapselt ausgeführt sein.The shafts of the bevel gearboxes shown in FIGS. 2 and 3 and 6 and 7 can be embodied encapsulated in their section between the drive motors 9, 9 'and the end shield 13.

Claims (9)

1. A slotted wall milling cutter for producing a slotted wall in the ground, with a cutter frame (5) to which is fixed a bearing bracket (13), with roller-like cutting wheels (11) arranged on either side of the bearing bracket (13) and which are mounted in rotary manner in the bearing bracket (13), with at least one drive motor (9), with in each case one cutting wheel gear arranged within the roller-like cutting wheels (11) and with at least one gear means (19,27,37,37′) arranged between the drive motor (9) and the cutting wheel gears,
characterized
in that the drive motor (9) is in each case fixed to the cutter frame (5),
in that the gear means (19,27,37,37′) is in each case at least partly positioned in recesses of the bearing bracket (13),
in that the cutting wheel gear is constructed as a multistage planetary gear,
in that each gear means is enclosed within a casing, in that a separate drive motor (9,9′) and gear means (37,37′) are provided for each cutting wheel gear, and
in that the gear means (19,27,37,37′) are arranged within the bearing bracket (13) in the bearing bracket plane in substantially V-shaped manner and substantially parallel and spaced to one another at right angles to the bearing bracket plane.
2. A slotted wall milling cutter according to claim 1, characterized in that the drive motor (9) is constructed as an electric motor.
3. A slotted wall milling cutter according to claim 1, characterized in that the drive motor (9) is constructed as a hydraulic motor.
4. A slotted wall milling cutter according to claim 1, characterized in that the gear means is constructed as a bevel gearing (19) with a transmission shaft (17).
5. A slotted wall milling cutter according to claim 1, characterized in that the gear means is constructed as a chain drive (27) with a transmission chain (31) and two sprocket wheels (29,33).
6. A slotted wall milling cutter according to one of the preceding claims, characterized in that several drive motors and several gear means are provided for each cutting wheel gear.
7. A slotted wall milling cutter according to one of the preceding claims, characterized in that both cutting wheel gears of the cutting wheels (11) are coupled together by a single shaft (21).
8. A slotted wall milling cutter according to claim 4, characterized in that a geared coupling is provided between the drive motor (9) and the transmission shaft (17).
9. A slotted wall milling cutter according to one of the preceding claims, characterized in that the lower edge of the bearing bracket (13) terminates in spaced manner above the lower edge of the cutting wheels (11).
EP85107854A 1984-07-06 1985-06-25 Cutting wheel apparatus for excavating cut-off trenches Expired - Lifetime EP0167090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107854T ATE36881T1 (en) 1984-07-06 1985-06-25 DIAPHRAGM CUTTER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3424999A DE3424999C2 (en) 1984-07-06 1984-07-06 Trench cutter
DE3424999 1984-07-06

Publications (4)

Publication Number Publication Date
EP0167090A2 EP0167090A2 (en) 1986-01-08
EP0167090A3 EP0167090A3 (en) 1987-06-16
EP0167090B1 EP0167090B1 (en) 1988-08-31
EP0167090B2 true EP0167090B2 (en) 1992-02-19

Family

ID=6240044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107854A Expired - Lifetime EP0167090B2 (en) 1984-07-06 1985-06-25 Cutting wheel apparatus for excavating cut-off trenches

Country Status (5)

Country Link
US (1) US4694915A (en)
EP (1) EP0167090B2 (en)
JP (1) JPH0699907B2 (en)
AT (1) ATE36881T1 (en)
DE (2) DE3424999C2 (en)

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Also Published As

Publication number Publication date
JPH0699907B2 (en) 1994-12-07
US4694915A (en) 1987-09-22
DE3564715D1 (en) 1988-10-06
EP0167090A2 (en) 1986-01-08
ATE36881T1 (en) 1988-09-15
EP0167090A3 (en) 1987-06-16
JPS6136429A (en) 1986-02-21
DE3424999A1 (en) 1986-01-16
DE3424999C2 (en) 1994-01-13
EP0167090B1 (en) 1988-08-31

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