EP3819434A1 - Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol - Google Patents

Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol Download PDF

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Publication number
EP3819434A1
EP3819434A1 EP19207471.4A EP19207471A EP3819434A1 EP 3819434 A1 EP3819434 A1 EP 3819434A1 EP 19207471 A EP19207471 A EP 19207471A EP 3819434 A1 EP3819434 A1 EP 3819434A1
Authority
EP
European Patent Office
Prior art keywords
speed
trench wall
torque
milling
wall 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.)
Granted
Application number
EP19207471.4A
Other languages
German (de)
English (en)
Other versions
EP3819434B1 (fr
Inventor
Andreas HUGL
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.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen GmbH
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
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Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP19207471.4A priority Critical patent/EP3819434B1/fr
Priority to PCT/EP2020/080928 priority patent/WO2021089603A1/fr
Priority to CA3154436A priority patent/CA3154436A1/fr
Priority to KR1020227013292A priority patent/KR20220065857A/ko
Priority to CN202080071722.XA priority patent/CN114555889A/zh
Publication of EP3819434A1 publication Critical patent/EP3819434A1/fr
Application granted granted Critical
Publication of EP3819434B1 publication Critical patent/EP3819434B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—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
    • 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
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • 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
    • E02F3/246—Digging wheels; Digging elements of wheels; Drives for wheels drives
    • 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
    • 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
    • E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
    • E02F5/145—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids control and indicating devices

Definitions

  • the invention relates to a method for creating a milling trench in the ground by means of a trench wall cutting device which has a trench wall cutter and a support device which is designed to raise and lower the trench wall cutter, the trench wall cutter being connected to the support device at its upper end and at its lower end has at least one milling wheel, which is rotatably mounted and can be driven in rotation via a rotary drive for removing soil material, a setpoint value for an advance speed of the trench wall cutter when removing soil material can be specified in a control unit, by means of which the trench cutter is lowered into the ground by the support device is controlled, according to the preamble of claim 1.
  • the invention further relates to a trench wall milling device with a trench wall cutter and a support device which is designed to raise and lower the trench wall cutter into the ground, the trench wall cutter being connected at its upper end to a support device and at its lower end having at least one milling wheel which can be rotated and is driven in rotation via a rotary drive for removing soil material, a control unit also being provided, by means of which lowering of the trench wall cutter by the support device into the ground can be controlled, with a setpoint value for a forward speed of the trench wall cutter when removing soil material in the control unit can be entered, according to the preamble of claim 10.
  • a generic method is based on the EP 0 790 356 B1 emerged.
  • a trench wall milling machine is lowered into the ground at a target rate of advance.
  • the target advance speed is entered into a control device.
  • a load on the trench cutter is recorded by the control device. If the load on the trench wall cutter and thus a certain pressure on the cutting wheels is exceeded, the advance speed of the trench wall cutter is reduced. This is to avoid overloading the milling wheels during milling operation.
  • a force on the milling winch or a support cable of the trench wall cutter is therefore usually recorded.
  • other factors also have a not inconsiderable influence on this force value, such as the friction of the cutter on the trench walls and the way in which the trench is filled with a supporting liquid.
  • a corresponding safety factor must be taken into account for the measured load value. This makes it more difficult to operate the trench wall milling device at an upper performance limit at which a high milling progress is guaranteed with a simultaneous low wear.
  • the invention is based on the object of specifying a method and a trench wall milling device for creating a milling slot in the ground, with which a trench wall milling device can be operated particularly efficiently.
  • the method according to the invention is characterized in that the advance speed is controlled as a function of a speed and / or a torque of the at least one cutting wheel by means of the control unit, with the advance speed of the trench wall cutter compared to the Setpoint for the advance speed is changed, in particular reduced.
  • the invention is based on the knowledge that the rotational movement of the at least one cutting wheel can be used to control or regulate the advance speed.
  • the rotational speed and / or the torque of the milling wheel can be considered under the rotational movement of the milling wheel. If the advance speed is too high for a pending soil layer, the speed of the milling wheel is reduced and a torque applied to the milling wheel increases. If the speed drops, there are no longer any favorable cutting conditions for a high removal rate. Likewise, if the torque increases, the load on the milling gear and the cutting teeth increases and there is a risk of tooth breakage. The rotary movement thus allows a very good conclusion as to whether a preselected target advance speed for an upcoming soil layer is too high or, if necessary, also too low. In addition to a reduction in the rate of advance, an increase can also be provided.
  • a limit value in the context of the invention can be understood to mean not only a specific individual value, but also a limit range with a range of values.
  • the invention is further based on the knowledge that a rotary movement and in particular a speed and / or a torque of the at least one milling wheel can be detected relatively easily and precisely compared to a load. This enables a very precise and also fast control or regulation of a trench wall cutter when removing soil material. The invention thus enables even an inexperienced machine operator to work close to the performance limit of a trench wall cutter, so that efficient milling can be achieved with a high daily output.
  • a preferred embodiment of the invention consists in that when the limit value for the speed or the torque is reached, the advance speed of the trench wall cutter is reduced until the speed is above again a predetermined speed limit value or the torque is below a predetermined torque limit value.
  • the trench wall cutter can thus be operated with a relatively high target rate of advance and with a relatively high load. If the speed drops below a predetermined limit value or the torque increases above a predetermined limit value, the control unit is designed so that the propulsion speed is changed, in particular reduced, until the speed is above a predetermined speed limit value or the torque is below a specified torque limit value is. With a reduction in the advance speed, the load on the trench wall cutter is usually also reduced. In this way, the load on the at least one milling wheel can be relieved, so that there is an increase in speed or a reduced torque requirement.
  • the advance speed of the trench wall cutter is increased up to the setpoint value for the advance speed when the speed is above the speed limit value or the torque is below the torque limit value.
  • the advance speed can be regulated depending on the measured speed or the measured torque.
  • the limit value at which the propulsion speed is reduced when it is reached can be equal to the speed limit value or the torque limit value at which the propulsion speed is increased again.
  • these limit values can also be different and form a limit range. This counteracts the risk that the regulation of the system will start to oscillate.
  • the advance speed can furthermore be expedient for the advance speed to continue to be controlled as a function of a load on the trench wall cutter.
  • the surcharge can be recorded as an additional measured value, with a limit value for an upper surcharge or a lower surcharge likewise being able to be entered into the control unit, at which the advance speed is reduced or increased.
  • a particularly good control or regulation of the trench wall cutter is achieved according to a further development of the invention in that the speed or the torque is recorded directly and a measured value for this is fed to the control unit.
  • the speed is detected by means of a speed pickup or the torque is detected by means of a torque pickup.
  • Speed sensors are well known and can, in particular, detect a speed, for example on a drive shaft, without contact. Detection can take place optically, inductively, magnetically or in any other known manner.
  • known torque transducers can be provided, for example, on a drive shaft of the milling wheel. Known torque transducers can work electronically with one or more strain gauges on a shaft, for example.
  • a further development of the method according to the invention can provide for the speed and / or the torque to be recorded indirectly. In this way, measuring devices directly on the milling wheel or milling wheel drive can be avoided in particular.
  • a power consumption of the rotary drive is measured in order to detect the speed and / or the torque. If, for example, the milling wheel hits a firmer soil layer at a given advance speed, this can be detected from an increase in the power consumption of the rotary drive. This is basically possible with all types of drive, for example also with an electric rotary drive.
  • a preferred embodiment variant of the invention consists in that the rotary drive is operated hydraulically with a hydraulic circuit, a pressure or a pressure change in the hydraulic circuit being detected.
  • the pressure that is applied to the hydraulic pumps of the hydraulic circuit can be used to control or regulate the advance speed. If, for example, the torque rises above a defined limit value and thus the pressure applied to the hydraulic pumps, the propulsion speed can be reduced.
  • a limit value can preferably be approx. 10% below the pressure for a maximum speed or a maximum torque in order to still have sufficient reserve when operating the milling wheels.
  • control unit can be designed in such a way that when the at least one cutting wheel is completely blocked, the trench wall cutter is slightly raised by the control unit by means of the support device. This reduces the contact force and thus the required torque. The milling wheels can then start rotating again.
  • the invention is characterized in that the control unit is designed to control the advance speed as a function of a speed and / or a torque of the at least one cutting wheel and to specify a limit value for the speed and / or the torque Limit value for the speed or for the torque, the advance speed of the trench wall cutter can be reduced compared to the setpoint for the advance speed.
  • controlling in the context of the invention is to be understood broadly and can also include regulating.
  • the method described above can be carried out with the trench wall cutter according to the invention.
  • the advantages described above can be achieved.
  • the support device is a carrier device with a support cable or a support rod, the trench wall cutter being suspended vertically adjustable on the support cable or the support rod.
  • the support cable or the support rod form a support element with which the trench wall cutter can be sunk vertically into the ground.
  • the support device can have a winch for the support cable or a linear drive, in particular a hydraulic cylinder device, for the support rod.
  • a load can be applied by a force transducer on the winch or a pressure sensor in the hydraulic system of the hydraulic cylinder.
  • the trench wall cutting device can be designed with only one cutting wheel or with a pair of two cutting wheels.
  • Appropriate operation of the trench wall cutting device results from the fact that a total of four cutting wheels are provided which are arranged in pairs next to each other.
  • the axis of the at least one cutting wheel is directed transversely to the direction of advance, in particular horizontally. If there are two pairs of milling wheels, the two milling wheels of a milling wheel pair rotate around the same milling wheel axis.
  • the milling wheel axles of the two milling wheel pairs are arranged parallel and spaced from one another.
  • the trench wall milling device 10 has a support device 20 with a support device 22 which is provided with a crawler track.
  • a mast 24 is mounted in an approximately vertical direction, over the mast head of which a support cable 26 is guided.
  • a basically known trench wall cutter 30 with a scaffold-like milling frame 32 is suspended from the free end of the support cable 26.
  • the support cable 26 is connected to the trench wall cutter 30 at an upper end thereof.
  • the other end of the support cable 26 is led to a winch 28, which is only indicated, on the carrier device 22. By means of the winch 28, the trench wall cutter 30 can be raised and lowered vertically.
  • a total of four milling wheels 34 are arranged in pairs, as is only shown schematically in the figure.
  • the milling wheels 34 can be set in rotary motion via a rotary drive 36, indicated schematically in the figure, on the milling frame 32, which is hydraulically driven.
  • a rotary drive 36 indicated schematically in the figure, on the milling frame 32, which is hydraulically driven.
  • An advance speed of the trench wall cutter 30 can be determined, for example, on the winch 28 by measuring the winch rotation over time.
  • a setpoint value for the advance speed can be entered in a control unit on the carrier device 22, as a result of which, for example, the winch 28 is controlled accordingly.
  • a speed and / or a torque of the milling wheels 34 can also be recorded directly or indirectly via the pressure on the hydraulic units, which are also arranged on the carrier device 22. If the speed of the cutting wheels 34 falls below a predetermined limit value at a given advance speed of the trench wall cutter 30, a drive for the winch 28 can be activated by the control unit in order to reduce the advance speed of the trench wall cutter 30. This reduction in the advance speed of the trench wall cutter 30 takes place until the speed of the cutting wheels 34 again exceeds a speed limit value. The advance speed of the trench wall cutter 30 can then be increased again by the control unit by appropriate control of the winch 28 until the predefined advance rate of the trench wall cutter 30 is reached. As an alternative or in addition, a control or regulation can also take place, taking into account the torque at the milling wheels 34.
EP19207471.4A 2019-11-06 2019-11-06 Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol Active EP3819434B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19207471.4A EP3819434B1 (fr) 2019-11-06 2019-11-06 Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol
PCT/EP2020/080928 WO2021089603A1 (fr) 2019-11-06 2020-11-04 Procédé et dispositif de coupe de tranchée destinés à la création d'une tranchée dans le sol
CA3154436A CA3154436A1 (fr) 2019-11-06 2020-11-04 Procede et dispositif de coupe de tranchee pour la production d?une tranchee coupee dans le sol
KR1020227013292A KR20220065857A (ko) 2019-11-06 2020-11-04 지반에서 커팅 트렌치를 생성하기 위한 방법 및 트렌치 커팅 장치
CN202080071722.XA CN114555889A (zh) 2019-11-06 2020-11-04 用于在土壤中产生铣削槽的方法和槽壁铣削装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19207471.4A EP3819434B1 (fr) 2019-11-06 2019-11-06 Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol

Publications (2)

Publication Number Publication Date
EP3819434A1 true EP3819434A1 (fr) 2021-05-12
EP3819434B1 EP3819434B1 (fr) 2022-02-16

Family

ID=68470401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19207471.4A Active EP3819434B1 (fr) 2019-11-06 2019-11-06 Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol

Country Status (5)

Country Link
EP (1) EP3819434B1 (fr)
KR (1) KR20220065857A (fr)
CN (1) CN114555889A (fr)
CA (1) CA3154436A1 (fr)
WO (1) WO2021089603A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115233758B (zh) * 2021-11-30 2023-10-03 江苏徐工工程机械研究院有限公司 铣槽机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008395A1 (fr) * 1995-08-31 1997-03-06 Hitachi Construction Machinery Co., Ltd. Circuit de commande d'excavateur
EP1580327A1 (fr) * 2004-03-26 2005-09-28 BAUER Maschinen GmbH Appareil pour creuserdes tranchées dans le sol
EP2573275A1 (fr) * 2011-09-20 2013-03-27 Soilmec S.p.A. Machine permettant de creuser le sol

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119210C1 (fr) 1991-06-11 1993-01-21 Bauer Spezialtiefbau Gmbh, 8898 Schrobenhausen, De
GB2328700B (en) 1995-07-31 1999-04-14 Kvaerner Cementation Found Ltd Improved auger piling
CN1249303C (zh) * 2003-02-27 2006-04-05 瓦克建筑设备股份公司 地面切割装置
DE10320662A1 (de) 2003-05-08 2004-12-02 Bauer Maschinen Gmbh Verfahren und Vorrichtung zur Bodenbearbeitung
CN105369817B (zh) * 2014-08-06 2018-06-29 中联重科股份有限公司 铣槽机铣削控制处理方法、装置、系统及铣槽机
CN205224140U (zh) * 2015-12-16 2016-05-11 长安大学 双速电驱动双轮铣槽机
HUE054961T2 (hu) 2016-09-21 2021-10-28 Bauer Spezialtiefbau Eljárás és építõipari gép építési talaj megmunkálására

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008395A1 (fr) * 1995-08-31 1997-03-06 Hitachi Construction Machinery Co., Ltd. Circuit de commande d'excavateur
EP0790356B1 (fr) 1995-08-31 2002-06-12 Hitachi Construction Machinery Co., Ltd. Circuit de commande d'excavateur
EP1580327A1 (fr) * 2004-03-26 2005-09-28 BAUER Maschinen GmbH Appareil pour creuserdes tranchées dans le sol
EP2573275A1 (fr) * 2011-09-20 2013-03-27 Soilmec S.p.A. Machine permettant de creuser le sol

Also Published As

Publication number Publication date
CA3154436A1 (fr) 2021-05-14
KR20220065857A (ko) 2022-05-20
WO2021089603A1 (fr) 2021-05-14
EP3819434B1 (fr) 2022-02-16
CN114555889A (zh) 2022-05-27

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