EP2703565A1 - Machine d'excavation - Google Patents

Machine d'excavation Download PDF

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Publication number
EP2703565A1
EP2703565A1 EP13181756.1A EP13181756A EP2703565A1 EP 2703565 A1 EP2703565 A1 EP 2703565A1 EP 13181756 A EP13181756 A EP 13181756A EP 2703565 A1 EP2703565 A1 EP 2703565A1
Authority
EP
European Patent Office
Prior art keywords
excavation
peripheral surface
bearing structure
delivery element
milling wheels
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.)
Withdrawn
Application number
EP13181756.1A
Other languages
German (de)
English (en)
Inventor
Mauro Casagrande
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Casagrande SpA
Original Assignee
Casagrande SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Casagrande SpA filed Critical Casagrande SpA
Publication of EP2703565A1 publication Critical patent/EP2703565A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/248—Cleaning the wheels or emptying the digging elements mounted on the wheels, e.g. in combination with spoil removing equipment
    • 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
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis

Definitions

  • the present invention concerns an excavation apparatus, such as for example a hydraulic miller used to make excavations such as diaphragms, ditches, trenches, wells, or other, having excavation members driven by motorization means connected to transmission means such as for example a chain.
  • a hydraulic miller used to make excavations such as diaphragms, ditches, trenches, wells, or other, having excavation members driven by motorization means connected to transmission means such as for example a chain.
  • the excavation apparatus according to the present invention is advantageously and preferentially applied during excavation operations in grounds of the clayey or muddy type, or in any case such that incrustations and deposits are formed on the excavation members.
  • Hydraulic millers are provided with rotary excavation members, such as milling wheels, which rotate around horizontal axes substantially parallel to the excavation surface.
  • rotary excavation members such as milling wheels
  • a plurality of excavation means are normally disposed in relief, for example teeth or inserts, having different profiles depending on the type of ground to be excavated.
  • Mechanical cleaners with blades comprise a sort of comb, disposed on the machine, which couples with the excavation means of the milling wheels in order to remove, during their rotation, the excavation material attached on the peripheral surface.
  • Metal cables, or metal tie rods consist of very compact cables, not very elastic, which are also attached to the machine and are able to remove the encrusted excavation material from the peripheral surface of the milling wheels.
  • metal cables One disadvantage of the use of metal cables is that they tend to wear rapidly and can easily break. Furthermore, the action of the metal cables wears out the milling wheels due to the sliding action.
  • One purpose of the present invention is to obtain an excavation apparatus, such as for example a hydraulic miller, which allows to reduce the cleaning and resetting times in efficient conditions of the excavation members, even in the case of excavations made in clayey or muddy grounds.
  • Another purpose of the present invention is to obtain an excavation apparatus with excavation members that can have a longer working life compared with known apparatuses.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • an excavation apparatus which overcomes the limits of the state of the art and eliminates the defects present therein, is used to make excavations such as diaphragms, ditches, trenches, wells, or other.
  • the excavation apparatus comprises at least a bearing structure, an excavation member connected to the bearing structure and having a peripheral surface on which excavation means are disposed, and a cleaning device cooperating with the bearing structure and able to clean the excavation member.
  • the cleaning device comprises at least a delivery element configured to be disposed in proximity to the peripheral surface of the excavation member in order to selectively deliver a fluid under pressure against the peripheral surface.
  • the delivery element is able to deliver the fluid also during the excavation operations.
  • the presence of the delivery element disposed in proximity to the peripheral surface of the excavation member eliminates, or at least limits, the interventions of manual cleaning to be made on the excavation member, avoiding having to interrupt the excavation operations repeatedly and frequently and reducing the working times.
  • pressurized fluid replaces the mechanical cleaners, preventing wear on or consumption of the peripheral surface of the excavation member.
  • the delivery element comprises at least a nozzle able to deliver fluid under pressure in order to hit at least part of the peripheral surface of the excavation member.
  • the delivery element is mounted on the bearing structure between the bearing structure and the excavation member.
  • This positioning is provided so as to optimize the excavation operations and the bulk of the delivery element and at the same time to facilitate the operations to remove the delivery element.
  • the delivery element comprises a plurality of nozzles substantially aligned with each other.
  • the fluid delivered by the delivery elements is able to hit the whole peripheral surface of the excavation member.
  • the delivery element is able to be selectively adjusted in its inclination with respect to the peripheral surface, so as to vary the inclination of the jet of fluid under pressure with respect to the peripheral surface.
  • a direction of the pressurized jet that is tangential to the peripheral surface can be more effective in detaching some excavation materials from the peripheral surface.
  • an excavation apparatus 10 in this case a hydraulic miller, only partly shown here, according to the present invention is suitable to make excavations such as for example diaphragms, ditches, trenches, wells, or other, which have a structural function, such as the perimeter walls of an underground car park, or a foundation function, such as a surface building, or again a waterproofing function, usually used in works on dams.
  • the excavation apparatus 10 comprises an excavation head 11, substantially with a box-like external shape, and connected in the upper part to a guide 12, which contains the control instruments for the excavation operations.
  • the excavation apparatus 10 is connected to a self-moving mean, not shown in the drawings, to form the hydraulic miller.
  • the excavation head 11 and the guide 12 define a bearing structure 31.
  • Excavation members in this case two pairs of milling wheels 13 with a substantially horizontal axis of rotation X, extend in correspondence with the lower part of the excavation head 11.
  • the milling wheels 13 define during use an excavation front 14, substantially parallel to the axis of rotation X.
  • Each pair of milling wheels 13 is made to rotate by a transmission chain 15 ( fig. 2 ).
  • Each chain 15 is driven, in an operating condition in which it makes the milling wheels 13 rotate, by a hydraulic motor 16, in this case disposed above each pair of milling wheels 13.
  • Each milling wheel 13 comprises a peripheral surface 17 ( fig. 3 ) equipped with excavation means, disposed in relief, in this case excavation teeth 18 provided with tools 19 which define the excavation front 14.
  • Each chain 15 is also provided with excavation teeth 18 that extend on the external side, during use, of the chain 15, that is, on the side able to face toward the ground to be excavated.
  • the excavation teeth 18 are disposed offset with respect to each other, in a direction substantially transverse to the longitudinal development of the chain 15.
  • the excavation operation is made progressive, and is able to reduce the stress on the individual excavation tooth 18 and can allow a more continuous, uniform and homogeneous excavation.
  • the milling wheels 13 are advantageously counter-rotating, so as to balance the stresses during the excavation and to convey and draw the debris and fragmented materials produced by the excavation operation toward a central suction zone 20, located between the milling wheels 13.
  • the excavation apparatus 10 also comprises a cleaning device 21 to clean the milling wheels 13, able to remove the excavation material remaining attached and/or encrusted on the peripheral surface 17 of the milling wheels 13.
  • the adhesion of the material occurs especially when the excavation operations take place through ground that is not hard and compact, such as for example clayey or muddy ground.
  • the cleaning device 21 in this case comprises four central delivery elements 22 and four lateral delivery elements 23, disposed respectively centrally and laterally with respect to the bulk of the excavation head 11.
  • Each delivery element 22 and 23 is disposed in proximity to the peripheral surface 17 of each milling wheel 13 and is provided with a plurality of nozzles 24, in this case five nozzles 24.
  • the plurality of delivery elements 22 and 23 for each milling wheel 13 allows to perform the cleaning action on the peripheral surface 17 of the milling wheel 13 also during the excavation itself.
  • Each delivery element 22 and 23 is connected, by means of pipes 25 located inside the excavation head 11, and indicated schematically by a line of dashes in fig. 2 , to a pump 26 attached to the upper part of the excavation head 11.
  • a pump 26 attached to the upper part of the excavation head 11.
  • two pumps 26 are installed, one for each pair of milling wheels 13.
  • the cleaning device 21 comprises only the central delivery elements 22.
  • the pump 26 may not be part of the excavation apparatus 10 and can be positioned outside the excavation during its activity.
  • a pipe is provided to take the pressurized fluid from outside to inside the excavation.
  • the delivery elements 22 and 23 When activated, the delivery elements 22 and 23 deliver a jet of pressurized fluid, in this case water and indicated by the reference number 24a, directly against the peripheral surface 17 of the milling wheels 13, so as to hit them, advantageously along their whole length.
  • a jet of pressurized fluid in this case water and indicated by the reference number 24a
  • the delivery elements 22 and 23 hit the whole peripheral surface 17.
  • the delivery elements 22 and 23 are able to deliver the same fluid normally used for the excavation operation, such as for example bentonite.
  • the delivery elements 22 and 23 and/or the respective nozzles 24 are mounted in such a manner that they can be oriented angularly depending on needs.
  • the delivery elements 22 and 23 are mounted in such a manner that they can be easily removed from their supports, for example when they are not necessary.
  • the cleaning device 21 is suitable to deliver water mixed with a liquid having a high capacity of dissolving encrusted material.
  • the jet of pressurized fluid is able to remove the excavation material remaining attached on the peripheral surface 17 of the milling wheels 13.
  • this operation can take place at the same time as the excavation, thus eliminating or at least limiting the operations of manual cleaning of the milling wheels 13 provided in the state of the art, where the excavation has to be interrupted in order to bring the milling wheels 13 to the surface.
  • the jet of pressurized fluid does not wear the peripheral surface 17 of the milling wheels 13.
  • the presence of the cleaning device 21, removing the excavation material from the peripheral surface 17, thus allows to keep the vertical advance of the milling wheels 13 during the excavation operations as regular as possible.
  • the cleaning device 21 also allows to keep the excavation members, in particular the teeth of the milling wheels 13, constantly in efficient conditions.
  • the debris is sucked in through a suction box 27 connected to a suction pump 28 disposed on the upper part of the excavation head 11.
  • the suction pump 28 is connected, on the opposite side, to a discharge pipe 29 through which the debris is discharged outside the excavation.
  • the excavation apparatus also comprises guide blocks, not shown in the drawings, of the type retractable between a position outside and inside the bulk of the excavation head 11, for example hydraulically or manually extendible toward the outside of the excavation head 11.
  • Each guide block is able to vertically guide the excavation apparatus 10 during the excavation operations, to prevent unwanted rotations of the milling wheels 13 around the vertical, thus optimizing, together with the cleaning device 21, the functioning of the excavation apparatus 10.

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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)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
EP13181756.1A 2012-08-30 2013-08-27 Machine d'excavation Withdrawn EP2703565A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000148A ITUD20120148A1 (it) 2012-08-30 2012-08-30 Attrezzatura di scavo

Publications (1)

Publication Number Publication Date
EP2703565A1 true EP2703565A1 (fr) 2014-03-05

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Family Applications (1)

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EP13181756.1A Withdrawn EP2703565A1 (fr) 2012-08-30 2013-08-27 Machine d'excavation

Country Status (2)

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EP (1) EP2703565A1 (fr)
IT (1) ITUD20120148A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106436798A (zh) * 2016-10-31 2017-02-22 徐州徐工基础工程机械有限公司 一种隔离式双轮铣槽机传动箱
JP2018044429A (ja) * 2016-09-15 2018-03-22 バウアー マシーネン ゲーエムベーハー 地盤中にトレンチを製作する方法及びトレンチカッタ
CN107989095A (zh) * 2017-12-15 2018-05-04 中科纳达新材料（广西）有限公司 一种用于建筑地基的刨坑装置
EP3543408A1 (fr) * 2018-03-21 2019-09-25 BAUER Spezialtiefbau GmbH Engin de fraisage pour creuser des tranchées dans le sol et procédé de creusage des tranchées dans le sol
JP2019190268A (ja) * 2018-04-18 2019-10-31 バウアー マシーネン ゲーエムベーハー 土壌に掘削トレンチを形成するためのトレンチ・カッター及び方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035591B3 (de) * 2007-07-30 2008-10-23 Bauer Maschinen Gmbh Tiefbauvorrichtung zum Erstellen von Schlitzen im Boden
EP2378002A1 (fr) * 2010-04-16 2011-10-19 BAUER Maschinen GmbH Dispositif de pelousage pour établir une fente s'étendant verticalement dans le sol

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035591B3 (de) * 2007-07-30 2008-10-23 Bauer Maschinen Gmbh Tiefbauvorrichtung zum Erstellen von Schlitzen im Boden
EP2378002A1 (fr) * 2010-04-16 2011-10-19 BAUER Maschinen GmbH Dispositif de pelousage pour établir une fente s'étendant verticalement dans le sol

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018044429A (ja) * 2016-09-15 2018-03-22 バウアー マシーネン ゲーエムベーハー 地盤中にトレンチを製作する方法及びトレンチカッタ
CN106436798A (zh) * 2016-10-31 2017-02-22 徐州徐工基础工程机械有限公司 一种隔离式双轮铣槽机传动箱
CN107989095A (zh) * 2017-12-15 2018-05-04 中科纳达新材料（广西）有限公司 一种用于建筑地基的刨坑装置
EP3543408A1 (fr) * 2018-03-21 2019-09-25 BAUER Spezialtiefbau GmbH Engin de fraisage pour creuser des tranchées dans le sol et procédé de creusage des tranchées dans le sol
WO2019179770A1 (fr) * 2018-03-21 2019-09-26 Bauer Spezialtiefbau Gmbh Fraise pour parois moulées et procédé servant à pratiquer une entaille de fraisage dans le sol
CN112154237A (zh) * 2018-03-21 2020-12-29 包尔特殊基础工程有限公司 用于在土壤中产生切割沟槽的沟槽壁切割器和方法
JP2021518500A (ja) * 2018-03-21 2021-08-02 バウアー シュペチアルティーフバウ ゲーエムベーハー 土壌内に切削トレンチを作製するためのトレンチカッタおよび方法
US11236480B2 (en) 2018-03-21 2022-02-01 Bauer Spezialtiefbau Gmbh Trench cutter and method for producing a cut trench in the soil
JP2019190268A (ja) * 2018-04-18 2019-10-31 バウアー マシーネン ゲーエムベーハー 土壌に掘削トレンチを形成するためのトレンチ・カッター及び方法

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Publication number Publication date
ITUD20120148A1 (it) 2014-03-01

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