EP3725950B1 - Benne de forage et procédé de fabrication d'une parois dans le sol - Google Patents

Benne de forage et procédé de fabrication d'une parois dans le sol Download PDF

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Publication number
EP3725950B1
EP3725950B1 EP19170133.3A EP19170133A EP3725950B1 EP 3725950 B1 EP3725950 B1 EP 3725950B1 EP 19170133 A EP19170133 A EP 19170133A EP 3725950 B1 EP3725950 B1 EP 3725950B1
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EP
European Patent Office
Prior art keywords
grab
trench
trench wall
measuring device
measured values
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.)
Active
Application number
EP19170133.3A
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German (de)
English (en)
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EP3725950A1 (fr
Inventor
Stefan Roth
Johannes Sedlmeier
Jürgen Heilgemeir
Josef Haas
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
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Bauer Maschinen GmbH
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Publication date
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Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP19170133.3A priority Critical patent/EP3725950B1/fr
Priority to ES19170133T priority patent/ES2929747T3/es
Priority to CN202010306146.4A priority patent/CN111827385B/zh
Publication of EP3725950A1 publication Critical patent/EP3725950A1/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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • E02F3/4133—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device grabs carried out as loaders or mounted on a tractor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • E02F3/4135—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device with grabs mounted directly on a boom
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/47—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets
    • E02F3/475—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets for making foundation slots
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • E02F9/264—Sensors and their calibration for indicating the position of the work tool
    • E02F9/265—Sensors and their calibration for indicating the position of the work tool with follow-up actions (e.g. control signals sent to actuate the work tool)

Definitions

  • the invention relates to a trench wall grab for creating a trench in the ground, with a grab frame, grab shovels attached thereto, which can be adjusted for grabbing soil material between an open position and a closed position in which soil material is picked up, and an actuating device which can be used to adjust the grab shovels between the open position and the closed position, according to the preamble of claim 1.
  • the invention also relates to a method for creating a slot in the ground, using a trench wall grab that has a grab frame at the lower end of which two grab scoops are arranged, which can be adjusted between an open position and a closed position by means of an actuating device, the grab scoops soil material grip and receive in a closed position according to the preamble of claim 10.
  • a generic diaphragm wall grab is from the EP 1 950 353 B1 and from the JP 2007 327334 A out. Such devices are used to dig recesses or slits in the ground, which are primarily required to create so-called slotted, retaining or sealing walls in the ground.
  • the diaphragm wall grab is usually lowered into the ground with the grab buckets open, with the grab buckets penetrating the top of the soil. By closing the grab shovels, soil material is grabbed and picked up in the diaphragm wall grab with the grab shovels then closed. The filled slurry wall grab is then from the
  • Slots for retaining or sealing walls can reach depths of up to 50 m or more.
  • the cross-section of the trench created with the diaphragm wall grab is in the range of around 1 m wide and between 1.5 and 3 m long. Due to this trench cross-section and the usual trench depths, a grab operator often has no opportunity to see the bottom of the trench, especially when the trench is filled with a suspension.
  • the invention is based on the object of specifying a trench wall grab and a method for creating a slot in the ground, with which a particularly effective operation of a trench wall grab is made possible.
  • the object is achieved on the one hand by a trench wall grab having the features of claim 1 and on the other hand by a method having the features of claim 10 .
  • Preferred embodiments of the invention are specified in the respective dependent claims.
  • the diaphragm wall grab according to the invention is characterized in that a measuring device is provided, which is designed to determine a path and/or pressure when the grab scoops close, and in that the measuring device is connected to a control unit for forwarding measured values that are determined, which is designed to make a statement about the soil material based on the measured values determined by the measuring device.
  • a basic idea of the invention is to detect and evaluate penetration of the grab shovels into the ground and/or closing in the ground.
  • a measuring device is provided which is designed to determine a path and/or pressure when the grab scoops close. He follows such as relatively easy entry and closure, this may indicate that there is a loose layer of soil, such as a layer of gravel or sand.
  • a control unit which is connected to the measuring device and evaluates the measured values determined.
  • the control unit can make a statement about the soil material on the basis of the measured values.
  • the control unit can also receive further measured values from other components of the diaphragm wall gripping device, which e.g. B. allow a statement about the current altitude of the diaphragm wall grab can be transmitted.
  • a trench wall grab operator to schedule an effective operation. For example, a drop height with the diaphragm wall grab and thus a force for inserting the diaphragm wall grab into the ground can be set.
  • a comparison with data from a previous grab operation can also be used to identify at an early stage if there is a layer of rock or an obstacle.
  • a decision can then be made as to whether the at least temporary use of another soil removal tool, such as a diaphragm wall bit for breaking up rock, makes sense for further effective excavation of the trench.
  • the control unit includes a database in which measured values known for specific soil types are stored. Based on a determined penetration path or a closing speed or an expenditure of force, which is recorded by the measuring device, the control unit can use the stored data to make a direct statement about the type of soil, such as sand, gravel, clay, rock.
  • the measuring device is designed to record a progression of the measured values over time and/or over a current depth of the trench. This allows additional information on the ground structure or the presence of an obstacle can be recorded. For example, it can be determined in this way that there may be an upper layer with loose soil material, while a soil layer with firmer soil material is present directly underneath. The same applies to reverse soil stratification. This information can also be used for the subsequent grabbing step and/or when grabbing adjacent slots to make the excavation process as efficient as possible.
  • control unit can indicate that an obstacle, in particular a boulder, has been gripped by the gripper shovels. This can be determined in particular by the fact that the grab shovels cannot be closed or cannot be closed completely. The presence of a boulder or other obstacle may require a modification or even an interruption of the process, such as the use of a different soil removal device.
  • the diaphragm wall grab can also be dropped from a greater height with the grab buckets open to smash the obstacle.
  • the measuring device is equipped with appropriate sensors, such as displacement sensors or pressure sensors. According to one embodiment of the invention, it is particularly expedient that the measured values can be recorded individually for each grab shovel. For example, an asymmetrical closing of the grab buckets can be determined. It is particularly advantageous that the control unit can determine the size and position of the obstacle in the slot. Information about the size and location of the obstruction in the slot is helpful in removing it.
  • the gripper shovels can be actuated in any way by appropriate actuators. This can also be an actuation by actuating cables. According to a development of the invention, it is particularly preferred that the actuating device has at least one actuating cylinder. This can be a central actuating cylinder for both grab shovels or one or more actuating cylinders for each grab shovel. In particular, the actuating cylinders are operated hydraulically.
  • the measuring device which can include a number of sensors or measuring transducers, can be arranged at any point or at a number of points on the trench wall grab.
  • the measuring device it is particularly expedient for the measuring device to be arranged on the at least one actuating cylinder.
  • a pressure in the actuating cylinder can be recorded as a measure of the necessary expenditure of force and/or a travel of a piston in the actuating cylinder.
  • the travel provides information about the closing and the position of the grab shovels.
  • a preferred embodiment of the invention consists in that the gripper shovels are pivotably mounted on pivot bolts, that sensors of the measuring device are provided on the pivot bolts and that the sensors are designed to detect forces and/or a pivot angle of the gripper shovels.
  • the sensors can be force measurement sensors and/or sensors for recording a setting position or the setting angle of the gripper shovels. With these values, a statement can be made as to whether there is an asymmetrical loading or opening of the grab shovels. This in turn allows conclusions to be drawn about the shape and arrangement of an obstacle, in particular a boulder.
  • the invention further comprises a trench wall gripping device with a trench wall gripper which is designed according to the invention described above. It is provided that the slurry wall grab is mounted on a carrier device so that it can be adjusted vertically.
  • the carrier device can in particular comprise a mobile undercarriage, preferably a crawler chassis and an upper carriage which can preferably be rotated thereon.
  • a mast is preferably arranged on the superstructure, along which a diaphragm wall grab is mounted so that it can be adjusted vertically by means of a cable suspension or a rigid actuating rod.
  • the method according to the invention is characterized in that by means of a measuring device, a path and/or a pressure when the gripper blades are closed is determined and that the measuring device forwards determined measured values to a control unit, which is designed to make a statement about the soil material on the basis of the measured values determined by the measuring device.
  • the method according to the invention can be carried out in particular with the slurry wall grab described above.
  • the advantages described above can be achieved in this way.
  • a preferred method variant of the invention consists in that the slot is filled with a suspension when it is made or subsequently, and that the suspension hardens in the slot and a slot wall segment is produced.
  • a diaphragm wall can be produced by a corresponding repeated production of an adjoining or overlapping diaphragm wall segment.
  • the slit wall can in particular serve as a supporting and/or sealing wall.
  • a diaphragm wall gripping device 10 comprises a carrier device 12 with a diaphragm wall gripper 20 attached thereto.
  • An approximately vertically directed mast 14 with a mast head 15 is articulated on the superstructure 13 .
  • the slurry wall grab 20 is attached to the carrier device 12 with the mast 14 in a vertically adjustable manner via a carrying cable 16 .
  • Hydraulic energy is supplied via a supply line 18 .
  • a supply line for power and data can also be provided.
  • the trench wall grab 20 has a box-shaped grab frame 22 .
  • a holding device 40 is arranged on its upper side, on which one end of the carrying cable 16 is attached.
  • the gripper scoops 24 are mounted. Plate-shaped guide elements 26 are adjustably mounted along the gripper frame 22 for position control.
  • An actuating device 30 for the lower gripper shovels 24 is arranged in a central area of the gripper frame 22, which is constructed like a scaffold.
  • the actuating device 30 comprises a hydraulically drivable actuating cylinder 32 in which a piston rod 34 is mounted so that it can be extended downwards.
  • the hydraulic actuating cylinder 32 is operated via the supply line 18 (in 2 not shown) supplied by the carrier device 12 with hydraulic energy.
  • a lower end of the piston rod 34 is linked to a carriage element 36 which is guided in a linearly displaceable manner along the gripper frame 22 .
  • Two levers 38 are articulated on the carriage element 36, each lever 38 being connected in an articulated manner to a gripper blade 24.
  • the grab scoops 24 themselves are articulated at a lower end of the grab frame 22 .
  • a measuring device not shown in detail in the figures is provided, which is arranged in particular on the actuating device 30 and preferably on the actuating cylinder 32 .
  • the measuring device is designed to determine an extension path of the piston rod 34 and a pressure in the actuating cylinder 32 when the grab shovels 24 are closed. This makes it possible to determine when the gripper shovels 24 grip an obstacle 8, such as a rock, when closing.
  • the measuring device can be used to determine that, despite an increase in pressure in the actuating cylinder 32 acting on both sides, a displacement path of the piston rod 34 and thus of the carriage element 36 is no longer possible changes.
  • This state which can be detected by the measuring device, can be used by a control unit, which is also not shown, as an indication of the presence of an obstacle.
  • the control unit can preferably be arranged on the carrier device 12 .
  • the measured values determined by the measuring device can be sent to the control unit via the supply line 18 or via a wireless connection. Based on the measured values obtained, the control unit can then make a statement about the presence of an obstacle or also about the existing ground material.
  • the information determined in this way can e.g. B. be communicated via a monitor to an operator in the superstructure 13 of the carrier device 12 or a distant center.
  • control unit can also make a statement about the size of the obstacle 8 .
  • the control unit can also make a statement about the position of the obstacle.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Soil Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Earth Drilling (AREA)

Claims (11)

  1. Benne de forage pour la fabrication d'une fouille dans le sol, comportant :
    - un cadre de benne (22),
    - des godets (24) montés dessus qui, pour la préhension de matériau de sol, sont réglables entre une position d'ouverture et une position de fermeture, dans laquelle du matériau de sol est reçu, et
    - un dispositif d'actionnement (30) qui est réalisé pour le réglage des godets (24) entre la position d'ouverture et la position de fermeture,
    dans laquelle un dispositif de mesure est prévu, lequel est réalisé pour la détermination d'une course et/ou pression lors d'une fermeture des godets (24),
    dans laquelle pour la transmission de valeurs de mesure déterminées, le dispositif de mesure est en liaison avec une unité de commande qui est réalisée afin de donner une information sur le matériau de sol sur la base des valeurs de mesure déterminées par le dispositif de mesure, et
    dans laquelle l'unité de commande comporte une base de données, dans laquelle sont enregistrées des valeurs de mesure connues pour des types de sol déterminés.
  2. Benne de forage selon la revendication 1,
    caractérisée en ce que
    le dispositif de mesure est réalisé afin de détecter une étendue des valeurs de mesure dans le temps et/ou une profondeur actuelle de la fouille.
  3. Benne de forage selon l'une des revendications 1 à 2,
    caractérisée en ce que
    l'unité de commande peut indiquer que les godets (24) rencontrent un obstacle (8), en particulier un bloc rocheux.
  4. Benne de forage selon l'une des revendications 1 à 3,
    caractérisée en ce que
    les valeurs de mesure pour chaque godet (24) peuvent être détectées individuellement.
  5. Benne de forage selon la revendication 3 ou 4,
    caractérisée en ce que
    une indication de grandeur et/ou de position de l'obstacle (8) dans la fouille peut être déterminée pour l'unité de commande.
  6. Benne de forage selon l'une des revendications 1 à 5,
    caractérisée en ce que
    le dispositif d'actionnement (30) présente au moins un vérin d'actionnement (32).
  7. Benne de forage selon la revendication 6,
    caractérisée en ce que
    le dispositif de mesure est agencé au niveau de l'au moins un vérin d'actionnement (32).
  8. Benne de forage selon l'une des revendications 1 à 7,
    caractérisée en ce que
    les godets (24) sont logés de manière pivotante au niveau de boulons pivotants,
    en ce que des capteurs du dispositif de mesure sont prévus au niveau des boulons pivotants et
    en ce que les capteurs sont réalisés pour la détection de forces et/ou d'un angle de pivotement des godets (24).
  9. Dispositif de benne de forage avec une benne de forage (20) selon l'une des revendications 1 à 8,
    caractérisé en ce que
    la benne de forage (20) est logée de manière réglable verticalement au niveau d'un dispositif support (12).
  10. Procédé de fabrication d'une fouille dans le sol, en particulier avec une benne de forage (20) selon l'une des revendications 1 à 8 ou un dispositif de benne de forage (10) selon la revendication 9,
    dans lequel une benne de forage (20) est utilisée, laquelle présente un cadre de benne (22), sur l'extrémité inférieure duquel deux godets (24) sont agencés, lesquels sont réglables au moyen d'un dispositif d'actionnement (30) entre une position d'ouverture et une position de fermeture, dans lequel les godets (24) prennent du matériau de sol et le reçoivent dans la position de fermeture,
    - dans lequel au moyen d'un dispositif de mesure, une course et/ou une pression est déterminée lors d'une fermeture des godets (24) et
    - dans lequel le dispositif de mesure transmet des valeurs de mesure déterminées à une unité de commande avec une base de données, dans laquelle sont enregistrées des valeurs de mesure connues pour des types de sol déterminés, qui est réalisée afin de donner une information sur le matériau de sol sur la base des valeurs de mesure déterminées par le dispositif de mesure.
  11. Procédé selon la revendication 10,
    caractérisé en ce que
    la fouille est remplie avec une suspension lors de la fabrication ou ensuite et
    en ce que la suspension durcit dans la fouille et un segment de paroi à fouille est fabriqué.
EP19170133.3A 2019-04-18 2019-04-18 Benne de forage et procédé de fabrication d'une parois dans le sol Active EP3725950B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19170133.3A EP3725950B1 (fr) 2019-04-18 2019-04-18 Benne de forage et procédé de fabrication d'une parois dans le sol
ES19170133T ES2929747T3 (es) 2019-04-18 2019-04-18 Cuchara de muro pantalla y procedimiento para practicar una zanja en el suelo
CN202010306146.4A CN111827385B (zh) 2019-04-18 2020-04-17 用于在土地中生成槽的槽壁抓夹器和方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19170133.3A EP3725950B1 (fr) 2019-04-18 2019-04-18 Benne de forage et procédé de fabrication d'une parois dans le sol

Publications (2)

Publication Number Publication Date
EP3725950A1 EP3725950A1 (fr) 2020-10-21
EP3725950B1 true EP3725950B1 (fr) 2022-09-14

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EP19170133.3A Active EP3725950B1 (fr) 2019-04-18 2019-04-18 Benne de forage et procédé de fabrication d'une parois dans le sol

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EP (1) EP3725950B1 (fr)
CN (1) CN111827385B (fr)
ES (1) ES2929747T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113463607A (zh) * 2021-05-27 2021-10-01 诚业工程科技集团有限公司 大面积建筑地面平整度精度控制施工方法
CN117800211B (zh) * 2024-02-28 2024-06-11 山东海盛海洋工程集团有限公司 一种水下清障用液压抓斗

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EP0533558A1 (fr) 1991-09-16 1993-03-24 Compagnie Du Sol Appareil d'excavation à benne preneuse
EP0937675B1 (fr) 1998-02-18 2003-04-16 Rohr GmbH Dispositif de surveillance pour grappin motorisé submersible
DE20310240U1 (de) 2003-07-03 2003-09-11 Wolfgang Rohr GmbH & Co. KG, 67165 Waldsee Motorgreifer, insbesondere Motorunterwassergreifer
JP2007327334A (ja) 2007-08-21 2007-12-20 Ohbayashi Corp バケット式掘削機
EP1950353A1 (fr) 2007-01-26 2008-07-30 BAUER Maschinen GmbH Dispositif d'excavation du sol
JP2015017464A (ja) 2013-07-12 2015-01-29 日立建機株式会社 クラムシェルバケット
EP3299523A1 (fr) 2016-09-21 2018-03-28 BAUER Spezialtiefbau GmbH Procédé et engin de travail du sol
EP3401444A1 (fr) 2017-05-11 2018-11-14 BAUER Maschinen GmbH Dispositif d'excavation de tranchée et procédé de fabrication de tranchées dans le sol

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FR2040945A5 (fr) * 1969-04-28 1971-01-22 Allard Pierre
JP4318807B2 (ja) * 1999-08-25 2009-08-26 株式会社鴻池組 掘削揚土作業支援システム
JP3857502B2 (ja) * 2000-07-06 2006-12-13 日立建機株式会社 荷重検出式作業機械
ES2729273T3 (es) * 2014-06-03 2019-10-31 Enel Produzione Spa Aparato de carga y descarga que comprende un cucharón de agarre con un sistema de detección de cierre
CN106032673B (zh) * 2015-03-20 2018-10-16 徐工集团工程机械股份有限公司 一种铲刀负载控制系统、平地机以及方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533558A1 (fr) 1991-09-16 1993-03-24 Compagnie Du Sol Appareil d'excavation à benne preneuse
EP0937675B1 (fr) 1998-02-18 2003-04-16 Rohr GmbH Dispositif de surveillance pour grappin motorisé submersible
DE20310240U1 (de) 2003-07-03 2003-09-11 Wolfgang Rohr GmbH & Co. KG, 67165 Waldsee Motorgreifer, insbesondere Motorunterwassergreifer
EP1950353A1 (fr) 2007-01-26 2008-07-30 BAUER Maschinen GmbH Dispositif d'excavation du sol
JP2007327334A (ja) 2007-08-21 2007-12-20 Ohbayashi Corp バケット式掘削機
JP2015017464A (ja) 2013-07-12 2015-01-29 日立建機株式会社 クラムシェルバケット
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CN111827385B (zh) 2022-10-18
CN111827385A (zh) 2020-10-27
ES2929747T3 (es) 2022-12-01

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