EP4105389A1 - Procédé de fonctionnement d'une machine de construction et machine de construction - Google Patents

Procédé de fonctionnement d'une machine de construction et machine de construction Download PDF

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Publication number
EP4105389A1
EP4105389A1 EP21180242.6A EP21180242A EP4105389A1 EP 4105389 A1 EP4105389 A1 EP 4105389A1 EP 21180242 A EP21180242 A EP 21180242A EP 4105389 A1 EP4105389 A1 EP 4105389A1
Authority
EP
European Patent Office
Prior art keywords
hose
hydraulic
pressure
hydraulic hose
working device
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Withdrawn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
EP21180242.6A
Other languages
German (de)
English (en)
Inventor
Johannes Sedlmeier
Laura EBISCH
Andreas HUGL
Matthias Kaspar HÖRMANN
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
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP21180242.6A priority Critical patent/EP4105389A1/fr
Priority to CN202210684607.0A priority patent/CN115490095A/zh
Publication of EP4105389A1 publication Critical patent/EP4105389A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
    • B65H75/42—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles
    • B65H75/425—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles attached to, or forming part of a vehicle, e.g. truck, trailer, vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4478—Constructional details relating to handling of fluids
    • 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
    • E02F3/46—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
    • 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
    • E02F3/58—Component parts
    • 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
    • E02F5/025—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with scraper-buckets, dippers or shovels
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275—Hoses and supports therefor and protection therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1121—Section geometry shape
    • B65H2701/11214—Section geometry shape tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/33—Hollow or hose-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/35—Ropes, lines

Definitions

  • the invention relates to a method for operating a construction machine that has a hydraulically operated working device, in which the working device is supplied with hydraulic fluid via at least one hydraulic hose, which hydraulic fluid can assume a high first pressure and at least a low second pressure, which is lower than is the first pressure, the at least one hydraulic hose being at least partially wound up on a rotatable hose drum and being unwound from the hose drum and wound up again onto the hose drum in accordance with an adjustment movement of the working device, according to the preamble of claim 1.
  • the invention also relates to a construction machine, in particular a civil engineering machine, which has a hydraulically operated working device which can be supplied with hydraulic fluid via at least one hydraulic hose and which, depending on the operation, can assume a high first pressure and at least a low second pressure which is lower than the first pressure, wherein the at least one hydraulic hose is at least partially wound up on at least one rotatable hose drum and can be unwound from the hose drum and wound up again on the hose drum according to an adjustment movement of the working device, according to the preamble of claim 7.
  • Such a construction machine is, for example, from EP 1 950 353 B1 famous.
  • the construction machine relates to a carrier device on which a vertically adjustable Trench wall grab is arranged.
  • the grab buckets of the slurry wall grab which is designed as a hydraulic grab, can be actuated hydraulically.
  • a rotatable hose reel is mounted on a boom, whereby a hydraulic hose can be fed to the diaphragm wall grab via the hose reel.
  • One or more hydraulic cylinders can be provided for opening and closing grab shovels, which are controlled alternately for opening and closing. If a grab shovel is closed, a so-called closing side of the hydraulic cylinder is subjected to high pressure via a hydraulic hose in order to keep the shovel closed, while an opening side is depressurized. To open, a pressure reversal takes place, with the opening side then being subjected to high pressure via a hydraulic hose, while the closing side and the hydraulic hose connected thereto are depressurized.
  • the grab is driven down onto the ground with the grab shovels open.
  • soil material is picked up and the diaphragm wall grab can then be pulled up out of the ground again with the grab shovels closed and the soil material picked up and pivoted to a transverse position.
  • the associated hydraulic hoses are correspondingly unwound from a hose reel or rewound onto the respective hose reel.
  • a hydraulic hose can be subjected to high pressure or be depressurized during this unwinding or winding.
  • pressure is applied and pressure is relieved, changes in shape of the hydraulic hose can occur.
  • the pressure changes can be several 10 bar and even more than 100 bar. During prolonged operation, damage to the hydraulic hoses and even the hose reel can occur.
  • the invention is based on the object of specifying a method and a construction machine with which gentle operation of hydraulic hoses and hose reels can be achieved.
  • the method according to the invention is characterized in that a controller is provided which controls the pressure of the hydraulic fluid in the at least one hydraulic hose independently of the operation of the implement in such a way that a predetermined minimum pressure prevails in the hydraulic hose when the at least one hydraulic hose is wound onto the hose drum.
  • a basic idea of the invention is to ensure that there is sufficient minimum pressure in the hydraulic hose when a hydraulic hose is being rolled up, regardless of the operating mode of the working device.
  • the hydraulic hose which must have a certain flexibility, is not rolled up in a depressurized state. Rather, the minimum pressure ensures that the hydraulic hose, in the wound-up state, usually retains a substantially circular cross-sectional shape and a substantially constant length.
  • the invention is based on the finding that when pressure is applied, a hydraulic hose increases its cross-section. At the same time, this increase in cross section or diameter results in a considerable reduction in the length of a hydraulic hose. With a rolled-up hydraulic hose, this can result in a "constrictor" effect, in which the individual windings on the hose drum pull together. Outer hose windings can be pressed between inner hose windings. This can damage the hose wall. In addition, high compressive forces can be exerted on the hose reel and in particular on the side walls and the hub of the hose reel. The hose drum can be deformed in an undesirable way or even destroyed.
  • a minimum pressure of a few bar up to more than 100 bar can be provided, which is preferably significantly lower than a working pressure for the working device.
  • the minimum pressure can be less than or equal to the working pressure or even higher.
  • a preferred embodiment of the invention consists in that when the hydraulic hose is being wound up, a pressure of the hydraulic fluid in the hydraulic hose is increased by the control to the minimum pressure when the hydraulic fluid has the low second pressure, and that the predetermined minimum pressure lies between the high first pressure and the low second pressure lies.
  • the low second pressure is preferably an unpressurized state, with ambient pressure or a pressure value close to ambient pressure being present in particular.
  • the first high pressure is, in particular, a working pressure required to operate the implement, which is required, for example, to actuate hydraulic cylinders or hydraulic drives. This first high pressure, which in particular represents the working pressure, can amount to a few 10 bars and even more than 100 bars.
  • the minimum pressure required depends on the size and type of hydraulic hose, the size of the hose reel and the number of possible windings on the hose reel, as well as the working pressure to be expected.
  • the minimum pressure is preferably a few bars above the low second pressure and can preferably also be in the range of the working pressure or be a few bars lower.
  • the minimum pressure ensures that the internal pressure in the hydraulic hose is so great when it is being wound up that the hydraulic hose, which is basically flexible, essentially retains its cross-sectional shape and thus essentially the same length when it is wound up. This counteracts the problem of constriction right from the start.
  • the minimum pressure can be set in any suitable manner. It is particularly advantageous according to a further development of the invention that by the controller controls a hydraulic unit and/or a valve arrangement for setting the minimum pressure.
  • controllable check valves and/or throttle valves can be connected upstream and/or downstream of the hydraulic hose.
  • the control allows a pressure from a hydraulic unit, in particular a hydraulic pump, to be fed to the hydraulic hose at the minimum pressure when it is being wound up.
  • a check valve and/or throttle valve can be provided at the transition to the implement, which prevents unwanted activation of hydraulic actuators or hydraulic drives on the implement due to the minimum pressure of the hydraulic fluid.
  • the minimum pressure can also be designed to be so low that this does not cause the hydraulic components on the working device to operate even without a shut-off valve.
  • At least one sensor device which detects a pressure in the at least one hydraulic hose, a winding movement of the hose reel and/or an operating state of the implement.
  • the sensor device is connected to the controller, so that the controller reliably detects an operating state of the construction machine, in particular for winding up the hydraulic hose.
  • the controller can automatically initiate the application of the minimum pressure. Alternatively, it can be manually initiated by an operator.
  • the minimum pressure can be adjusted by the controller, especially when the grab shovels are closed.
  • the controller can be used to set the minimum pressure in a hydraulic hose on a specific hose reel if a pressure sensor detects that there is no pressure or that the pressure in a hydraulic hose is too low, in which case a winding movement on a hose reel is initiated. This can be done on the hose reel or a corresponding sensor can be provided on a drive for rotating the hose reel.
  • a pressure can be reliably detected via corresponding pressure sensors in the hydraulic hose or the feed lines to the hydraulic hose.
  • any work device that is operated hydraulically via a hydraulic hose that can be wound up and unwound can be used on a construction machine according to the invention.
  • the implement is designed for working the ground and, in particular, that a drill, a gripper, a milling machine, a vibrator or a percussion unit is used.
  • the drilling device can in particular have a drilling drive, which is a drilling tool for creating a borehole in the ground by removing or displacing material, with a change in position with tracking of a hydraulic hose being necessary.
  • a gripper as a working device, the gripper preferably being designed as a diaphragm wall gripper for creating a slot for diaphragm wall segments or diaphragm walls in the ground.
  • the gripper can have one or more hydraulic cylinders for opening and closing the gripper shovels.
  • additional hydraulic drive components can be provided, such as a rotary drive or an actuating cylinder for rotating the gripper about a longitudinal axis of the gripper.
  • a cutter in particular a trench wall cutter, can be provided, which in particular has a plurality of cutting wheels driven by hydraulic rotary drives.
  • a vibrator can be provided as a working device, which in particular has one or more rotationally driven imbalance units.
  • One or more hydraulic rotary drives can be installed in the vibrator for rotary driving.
  • the working device can have an impact unit, in particular a ram or a hydraulic hammer, in which a ram or impact element is driven in a hydraulically reversing manner.
  • a trench wall grab with two grab buckets is used as the working device, which are adjusted between an open position and a closed position by the at least one hydraulic cylinder, which is supplied with hydraulic fluid via the at least one hydraulic hose, that the trench wall grab for forming a floor slot is adjusted to the ground and picks up soil material, with the at least one hydraulic hose being unwound from the hose drum, that the diaphragm wall grab is pulled vertically out of the slot with the grab scoops closed and the soil material picked up and is moved to an emptying position, the at least one hydraulic hose being used for supply the at least one hydraulic cylinder is wound onto at least one hose reel, and that when the at least one hydraulic hose is wound up by the controller de r Minimum pressure is set in the hydraulic hose. This enables safe operation of a diaphragm wall grab, in which hydraulic hoses are wound up and unwound particularly frequently.
  • the invention also includes a construction machine, in particular a civil engineering machine, which is characterized in that a controller is provided which is designed to control a pressure of the hydraulic fluid in the at least one hydraulic hose independently of the operation of the working device in such a way that when the at least one Hydraulic hose on the hose drum in the hydraulic hose there is a predetermined minimum pressure, in particular for carrying out the method according to the invention described above.
  • a controller is provided which is designed to control a pressure of the hydraulic fluid in the at least one hydraulic hose independently of the operation of the working device in such a way that when the at least one Hydraulic hose on the hose drum in the hydraulic hose there is a predetermined minimum pressure, in particular for carrying out the method according to the invention described above.
  • a preferred embodiment of the invention is that the construction machine has a mobile carrier device with a hydraulic unit for hydraulic supply and that the at least one hose drum is rotatably mounted and driven on the carrier device.
  • the at least one hose drum can be mounted on an upper carriage of the carrier device or directly on a mast, leader or boom of the carrier device.
  • two or more hose reels can preferably be mounted parallel to one another on the carrier device.
  • the carrier device preferably has a mobile undercarriage, in particular with a crawler chassis.
  • the at least one hose drum is also possible for the at least one hose drum to be mounted in a separate frame, which can be transported independently of the mounting of the other components of the construction machine.
  • any working device can be provided on the construction machine that must be supplied with hydraulic fluid for operation and must be adjusted during operation, with at least one hydraulic hose having to be repositioned.
  • the working device is designed for working the soil and in particular as a drilling device, a gripper, a milling machine, a vibrator or a percussion unit.
  • the hydraulic hose preferably has a circular cross section and is made of a flexible or elastic material, in particular a rubber material or a rubber-like material with appropriate reinforcement inserts.
  • a particularly advantageous embodiment of the invention is that the working device is designed as a trench wall grab with two grab buckets, which can be adjusted between an open position and a closed position by at least one hydraulic cylinder.
  • the operation of a diaphragm wall grab is characterized by frequent lifting and lowering of the grab, with a correspondingly frequent winding and unwinding of a hydraulic hose with corresponding pressure changes being necessary for opening and closing the grab shovels.
  • FIG. 1 shows a civil engineering machine 10 according to the invention with a mobile carrier device 12, which has a crawler chassis as an undercarriage 13 and an upper carriage 14 rotatably mounted thereon.
  • a hydraulic unit for generating a hydraulic pressure for a hydraulic fluid is arranged in the superstructure 14 .
  • the hydraulic unit includes an electric motor or an internal combustion engine, by means of which at least one hydraulic pump can be operated.
  • the carrier device 12 further comprises a mast 18 which is mounted in a tiltable manner on the superstructure 14 and has a substantially vertical operating position.
  • a working device 30 is suspended from a mast head 19 of the mast 18 via a carrying cable 25 .
  • the carrying cable 25 can be operated by means of a cable winch 24 on the superstructure 14.
  • At least one hydraulic hose 26 is guided from the mast head 19 to the working device 30 parallel to the support cable 25 .
  • at least two hydraulic hoses 26 are provided to provide a supply line and a return line.
  • the hydraulic hose 26 can be wound up and unwound from a hose drum 20 which is rotatably mounted on the mast 18 of the carrier device 12 . The hydraulic hose 26 can thus follow the vertical position of the implement 30 during operation.
  • the hydraulic hose 26 is supplied with hydraulic fluid by the hydraulic unit in the superstructure 14 and is line-connected to the working device 30 .
  • the working device 30 is designed as a trench wall grab 32 .
  • the trench wall grab 32 has an elongated frame 34, on the side areas of which strip-shaped guide elements 36 are arranged.
  • two grab buckets 38 are pivotally mounted between a closed position and an open position shown.
  • the gripper shovels 38 can be adjusted between the open position and the closed position via a central hydraulic cylinder 40 via adjustment levers, hydraulic fluid being supplied via the at least one hydraulic hose 26 .
  • the trench wall grab 32 is lowered onto the soil 5 with the grab shovels 38 open.
  • the grab shovels 38 dig into the ground 5 .
  • soil material is picked up by the grab shovels 38 .
  • the trench wall grab 32 is then moved upwards with the grab buckets 38 closed, after which the superstructure 14 can be pivoted to an emptying position. In this emptying position, the grab scoops 38 can be opened to empty the soil material.
  • the trench wall grab 32 can then be returned to the in 1 shown starting position to carry out a further gripping process are swung back.
  • the hydraulic hose 26 is fed as needed by winding or unwinding from the hose drum 20 by means of a drum drive 28, corresponding to the adjustment movement of the diaphragm wall grab 32.
  • a drum drive 28 corresponding to the adjustment movement of the diaphragm wall grab 32.
  • different pressure states can occur in the at least one hydraulic hose 26.
  • a high working pressure or a lower pressure can prevail in the hydraulic hose 26 .
  • the control of the construction machine 10 ensures that there is always a sufficient minimum pressure in an interior space 27 of the flexible hydraulic hose 26.
  • the hose drum 20 is rotatably mounted via a drum shaft 21 and at least one pivot bearing 23 .
  • the hose drum 20 can be driven in rotation via the control of the construction machine 10 for winding and unwinding the hydraulic hose 26 via a drum drive 28 that is only indicated schematically.
  • Hydraulic fluid can be supplied from the hydraulic unit on the carrier device 12 to the hydraulic hose 26 via a supply line 22, which is essentially formed by a hollow interior of the drum shaft 21.
  • a valve arrangement with a blocking and/or throttle valve can be provided on the supply line 22, with which a predetermined minimum pressure of the hydraulic fluid in the hydraulic hose 26 is ensured during a winding movement by the hose drum 20.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP21180242.6A 2021-06-18 2021-06-18 Procédé de fonctionnement d'une machine de construction et machine de construction Withdrawn EP4105389A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21180242.6A EP4105389A1 (fr) 2021-06-18 2021-06-18 Procédé de fonctionnement d'une machine de construction et machine de construction
CN202210684607.0A CN115490095A (zh) 2021-06-18 2022-06-17 一种用于运行工程机械的方法和工程机械

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21180242.6A EP4105389A1 (fr) 2021-06-18 2021-06-18 Procédé de fonctionnement d'une machine de construction et machine de construction

Publications (1)

Publication Number Publication Date
EP4105389A1 true EP4105389A1 (fr) 2022-12-21

Family

ID=76522883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21180242.6A Withdrawn EP4105389A1 (fr) 2021-06-18 2021-06-18 Procédé de fonctionnement d'une machine de construction et machine de construction

Country Status (2)

Country Link
EP (1) EP4105389A1 (fr)
CN (1) CN115490095A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117286918A (zh) * 2023-11-24 2023-12-26 亚核智造(江苏)科技有限公司 一种振动抓斗成槽机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718233A2 (fr) * 1994-12-22 1996-06-26 Bauer Spezialtiefbau GmbH Dispositif pour enrouler un tuyau
EP1950353B1 (fr) 2007-01-26 2009-07-22 BAUER Maschinen GmbH Dispositif d'excavation du sol
EP2532791A1 (fr) * 2011-06-08 2012-12-12 Soilmec S.p.A. Dispositif pour le support et le guidage des lignes de puissance pour des outils d'excavation
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