EP4249685A2 - Procédé et engin de construction pour le compactage du sol - Google Patents

Procédé et engin de construction pour le compactage du sol Download PDF

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Publication number
EP4249685A2
EP4249685A2 EP23186219.4A EP23186219A EP4249685A2 EP 4249685 A2 EP4249685 A2 EP 4249685A2 EP 23186219 A EP23186219 A EP 23186219A EP 4249685 A2 EP4249685 A2 EP 4249685A2
Authority
EP
European Patent Office
Prior art keywords
support cable
winch
cable
winch drum
compression element
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
EP23186219.4A
Other languages
German (de)
English (en)
Other versions
EP4249685B1 (fr
EP4249685A3 (fr
EP4249685C0 (fr
Inventor
Andreas HUGL
David Pfeiffer
Andreas SCHUELL
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 EP23186219.4A priority Critical patent/EP4249685B1/fr
Publication of EP4249685A2 publication Critical patent/EP4249685A2/fr
Publication of EP4249685A3 publication Critical patent/EP4249685A3/fr
Application granted granted Critical
Publication of EP4249685B1 publication Critical patent/EP4249685B1/fr
Publication of EP4249685C0 publication Critical patent/EP4249685C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/46—Position indicators for suspended loads or for crane elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/485—Control devices automatic electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
    • B66D1/505—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control electrical
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil

Definitions

  • the invention relates to a method for soil compaction with a construction machine, wherein a support cable is guided along a mast, the support cable is wound up and unwound by means of a rotatably mounted winch drum of a cable winch, the winch drum is driven in rotation by means of a winch drive and a compaction element is arranged on the support cable which is moved vertically by the support cable, the support cable being unwound from the winch drum of the cable winch and the compaction element being lowered from a position above a floor surface on the support cable to the floor surface, the compression element hitting the floor surface and thereby the ground compacted, according to the preamble of claim 1.
  • the invention further relates to a construction machine for soil compaction with a mast, a support cable which is guided along the mast, a cable winch with a rotatably mounted winch drum to which the support cable is attached for winding and unwinding, a winch drive for rotating the winch drum, a Compaction element, which is attached to the support cable for vertical movement, and a control unit, through which the cable winch can be operated to unwind the support cable from the winch drum, the compression element being lowered on the support cable to a floor surface and the compression element for compacting the soil the floor surface hits, according to the preamble of claim 11.
  • a generic construction machine comes from the EP 3 708 528 A1 out.
  • the winch drum When lowering a compaction element using such a construction machine, it is usually provided that after the compaction element hits the ground, the winch drum is braked by means of a corresponding braking device. Since the compression element hits a ground surface at a relatively fast lowering speed, so-called slack rope and an undesirable rope vibration can form on the support rope, which continues over the mast head to a winch drum. This rope vibration can cause rope wraps on the winch drum to jump out of their intended position. Continued operation of the winch drum may result in incorrect winding of the support cable on the winch drum, with the cable crossing the grooves on the drum.
  • Such a disordered rope winding on the winch drum can lead to damage to the winch drum and in particular to increased wear on the supporting rope. This can not only significantly shorten the lifespan of the suspension cable, but the overall maximum load capacity of the suspension cable can also be impaired.
  • the teachings EP 3 708 528 A1 A cable pressure device with at least one pressure element is to be provided in the area of the winch drum. This can reliably prevent the rope vibration of the supporting rope from spreading to the rope area wound on the winch drum.
  • the rope pressure device means additional design effort and requires a corresponding amount of space on the construction machine. Furthermore, the rope pressure device also requires maintenance at certain intervals.
  • the invention is based on the object of specifying a method and a construction machine for soil compaction, with which the negative effects of a cable vibration of the support cable on the cable winding on the winch drum are counteracted particularly efficiently.
  • the object is achieved on the one hand by a method with the features of claim 1 and on the other hand by a construction machine with the features of claim 11 solved.
  • Preferred embodiments of the invention are set out in the dependent claims.
  • the winding can be observed directly by a machine operator from an operating cabin.
  • a clean rope winding can also be ensured with any arrangement of the winch drum according to the invention by detecting a winding of the support cable on the winch drum using a sensor unit, in particular a camera unit or a radar unit or another suitable sensor.
  • the image from the camera unit for example, can be displayed to a machine operator in the machine cabin. Detection can take place optically, contactlessly via energy waves, tactilely, electronically, magnetically, through reed contact or in another suitable manner.
  • the sensor unit can be connected to the control unit, which determines whether there is correct winding on the winch drum based on signals or data detected by the sensor unit.
  • the signal or data can in particular be an image.
  • the recorded sensor signal for rope winding is evaluated electronically, for example using image processing software.
  • the machine operator or the control unit can individually adjust an amount or a measure of the unwinding of the support cable until the rope winding is correct on the winch drum.
  • the amount of unwinding can be specified as a rotation angle measure for the winch drum or a length measure for the support cable or a time period for controlling the winch drive (at a defined speed).
  • the winch drum is decoupled from the winch drive via a coupling device when unwinding the support cable, that the winch drive is driven in a direction of rotation for winding up the support cable before the compression element hits the bottom surface and that after the impact of the Compression element on the floor surface, the coupling device couples the winch drum with the already rotating winch drive.
  • This preferred embodiment of the invention is based on the knowledge that insufficient tension of the support cable in the area of the winch caused by cable vibration can lead to cable windings on the winch drum jumping out of their intended position.
  • the winch drive is decoupled from the winch drum via a coupling device when unwinding the support cable in a period of time before the compression element hits the ground surface.
  • the movement of the winch drum is therefore independent of the movement of the winch drive. This independence can be used to operate the winch drive at an early stage in a direction of rotation that is required to wind up the support cable.
  • the winch drum can be connected or coupled again to the winch drive, in particular immediately after the compression element has hit the ground surface, whereby the torque of the winch drive applied to the drive shaft can have a direct effect on the winch drum and a resulting abruptly starting rotational movement of the winch drum In the direction of winding up the supporting cable, this leads to very rapid cable tension in the area of the winch.
  • a winding force can be applied to the support cable via the winch drum immediately after or when the compression element hits the ground surface, so that it is immediately tensioned again in the area of the winch. Due to this immediately occurring rope tension, the formation of slack rope in the area of the winch and the associated jumping of rope windings on the winch drum from their intended position are significantly counteracted. This reduces the risk of undesirable misalignment of rope windings on the winch drum.
  • the support cable can in principle be connected directly to the compression element.
  • a chain and/or a steel cable hanger is preferably arranged as a buffer between the support cable and the compression element. This means that when braking, compression of the support cable due to standing on the compression element can be avoided.
  • the soil compaction process can be carried out by hand by a machine operator.
  • the method is carried out automatically using a control unit.
  • the control unit can in particular be connected to the winch drive and the coupling device and actuate them accordingly.
  • the control unit can also be connected to one or more sensors, through which a position of the compaction element and/or the rope tension is detected.
  • the clutch device can be designed as a lockable one-way clutch, whereby locking or unlocking can be effected by the control unit.
  • the coupling device can in principle be designed in any suitable manner. According to a further development of the invention, it is particularly expedient for the coupling device to comprise a free-fall brake, with the support cable unwinding taking place in a free-fall of the compression element.
  • a free-fall brake after opening the brake, the winch drum can be driven with low friction solely by the weight of the compression element attached to the support cable, whereby the compression element can hit the ground surface in free fall, so to speak. During this free fall, there is a certain minimum tensile stress on the supporting cable.
  • the free-fall brake can be used to end a free-fall or free-running mode electronically or by means of appropriate mechanical components when it hits the ground surface and a reduction in the cable tension occurs, with immediate coupling, i.e. the establishment of a torque-transmitting connection, between the winch drive and the Winch drum can be manufactured.
  • the free-fall brake which can be part of the clutch device or forms it as a whole, can be in connection with the control unit, which can in principle include an electronic computer unit.
  • the clutch device can be actuated at any time.
  • a preferred method variant of the invention is that the coupling device reaches the ground surface through the compaction element performs coupling. This ensures that, on the one hand, the freest possible falling movement of the compression element is achieved and, on the other hand, that torque is transferred from the winch drive to the winch drum immediately after hitting the ground in order to generate the desired cable tension of the support cable in the area of the winch.
  • any torque can be set on the winch drive for any period of time.
  • the winch drive generates a tightening torque during coupling, through which the support cable is tensioned in the area of the winch.
  • the tightening torque can preferably be designed in such a way that it leads to a desired rope tension, but the compaction element is not lifted from the ground. A second, higher torque can then be set for lifting.
  • the support cable is first briefly tensioned in the area of the winch and then the support cable is automatically transferred from the winch drum by the control unit before the compression element is raised again from the ground a certain amount is processed.
  • the support cable is preferably wound up again immediately afterwards.
  • this alternative or supplementary method it is provided to counteract incorrect winding of the support cable on the winch drum by first briefly tensioning the support cable in the area of the winch without lifting the compression element from the ground. Subsequently, before the compaction element is lifted from the ground, the tensioned support cable is automatically unwound and relaxed by a certain amount by the control unit, whereby any misalignment that may have occurred in the winding on the winch drum is removed again by unwinding.
  • the support cable can then be automatically wound up again by the control unit and the compaction element can be lifted from the ground until the compaction element again reaches the desired starting position above the ground for a new compaction process.
  • This method according to the invention ensures that even if an offset occurs in the cable winding, this is automatically and reliably eliminated by the control unit and so no permanent incorrect winding of the support cable can form on the winch drum. This also reliably counteracts rope wear.
  • the amount or degree of unwinding of the support cable before the compression element is raised again by winding up the support cable can be adjusted in any suitable manner. According to a further development of the invention, it is particularly advantageous that the support cable is unwound until the support cable is correctly wound on the winch drum. This ensures clean winding and therefore low wear on the support cable in the long term.
  • the amount of unwinding of the support cable is automatically set by the control unit or by a machine operator before the compression element is lifted again.
  • the amount can be constant or variable.
  • control unit is provided, which is designed to carry out one of the previously described methods for soil compaction.
  • the control unit can in particular be an electronic control unit and can in particular be integrated into an existing control unit of a construction machine.
  • the winch drum can also be arranged directly on the mast and in particular in an upper region of the mast. According to a further development of the invention, it is particularly expedient that the supporting cable is guided over a mast head at the upper end of the mast.
  • the winch drum and the winch drive can in particular be provided directly or close to a carrier device so that the construction machine as a whole has an overall center of gravity that is as low as possible.
  • the carrier device can in particular have an undercarriage with an uppercarriage rotatably mounted thereon.
  • the undercarriage can in particular include a chassis, in particular a crawler chassis.
  • At least one sensor unit in particular a camera unit, a radar unit or an ultrasonic or another suitable sensor, to detect a winding of the support cable in the area of the winch drum the winch drum is arranged.
  • a construction machine 10 designed as a crawler crane Fig. 1 has a mobile carrier device 12.
  • the carrier device 12 includes a crawler chassis 14, on which a superstructure 15 is rotatably mounted.
  • a holding carrier 26, a support carrier 28 and an adjusting cable mechanism 27 are provided on the superstructure 15 in a generally known manner.
  • At least one support cable 20 is guided from the superstructure 15, on which a compaction element 30 is suspended, which in the exemplary embodiment shown is designed as an impact weight 32 for soil compaction.
  • the support cable 20 is adjustable via a double winch arrangement in the superstructure 15, as is fundamentally known from the prior art.
  • a rope pressure device 40 can be arranged on each of the two sections of the support rope 20, one of which is on the holding carrier 26, also called A-frame, and the other is attached to the mast 16.
  • the ends of the support cable 20 are each attached to a cable winch in the superstructure 15, so that a double cable winch arrangement is provided for fast lifting operations.
  • a control unit can be provided on the superstructure 15, particularly in a cabin.
  • FIG. 2 A possible arrangement of a cable winch 22 for the construction machine 10 according to the invention is shown.
  • the cable winch 22 has a winch drum 24 for winding and unwinding the support cable 20.
  • the winch drum 24 can be driven to rotate in basically both directions of rotation via a winch drive 23, which is only partially shown, via an intermediate coupling device 25.
  • the coupling device 25 can be designed as a lockable one-way clutch or a so-called free-fall brake, with the support cable 20 being unwound in free fall, so to speak, solely via the weight of the compression element 30.
  • the coupling device 25 can immediately establish a rotation-proof connection between the winch drive 23 and the winch drum 24.
  • the winch drive 23 is driven, preferably via the control unit, in a winding direction, clockwise in the exemplary embodiment shown.
  • a tightening torque of the winch drive 23 is applied to the winch drum 24 immediately when coupling by the coupling device 25.
  • a desired tension of the support cable 20 in the area of the cable winch 22 can be achieved.
  • a clean winding of the support cable 20 on the winch drum 24 can be monitored by a camera unit 50 as a sensor unit.
  • a radar unit, ultrasound or another suitable sensor such as.
  • B. an optical sensor, a magnetic sensor or a reed contact can be used.
  • the support cable 20 can be unwound by a machine operator or preferably automatically via the control unit when an undesirable offset of the support cable 20 occurs on the winch drum 24 before the compression element 30 is lifted off the ground again.
  • the winch drum 24 can be used to wind up cleanly and the compression element 30 can then be lifted off the ground. In this way, the support cable 20 can be wound neatly on the winch drum 24.
  • a generally known additional cable pressure device 40 with a plate-shaped pressure element 42 can be provided on the winch drum 24.
  • the pressure element 42 is movably mounted by means of a base support 46 and can be pressed onto the cable winding on the winch drum 24 by means of a pressure cylinder 48 to additionally avoid cable displacement.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Automation & Control Theory (AREA)
  • Road Paving Machines (AREA)
EP23186219.4A 2020-11-11 2020-11-11 Procédé et engin de construction pour le compactage du sol Active EP4249685B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23186219.4A EP4249685B1 (fr) 2020-11-11 2020-11-11 Procédé et engin de construction pour le compactage du sol

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23186219.4A EP4249685B1 (fr) 2020-11-11 2020-11-11 Procédé et engin de construction pour le compactage du sol
EP20206938.1A EP4001509B1 (fr) 2020-11-11 2020-11-11 Procédé et machine de construction destinés au compactage du sol

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP20206938.1A Division EP4001509B1 (fr) 2020-11-11 2020-11-11 Procédé et machine de construction destinés au compactage du sol
EP20206938.1A Division-Into EP4001509B1 (fr) 2020-11-11 2020-11-11 Procédé et machine de construction destinés au compactage du sol

Publications (4)

Publication Number Publication Date
EP4249685A2 true EP4249685A2 (fr) 2023-09-27
EP4249685A3 EP4249685A3 (fr) 2023-10-18
EP4249685B1 EP4249685B1 (fr) 2025-07-30
EP4249685C0 EP4249685C0 (fr) 2025-07-30

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Family Applications (3)

Application Number Title Priority Date Filing Date
EP20206938.1A Active EP4001509B1 (fr) 2020-11-11 2020-11-11 Procédé et machine de construction destinés au compactage du sol
EP22204100.6A Active EP4144919B1 (fr) 2020-11-11 2020-11-11 Procédé et engin de construction pour le compactage du sol
EP23186219.4A Active EP4249685B1 (fr) 2020-11-11 2020-11-11 Procédé et engin de construction pour le compactage du sol

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Application Number Title Priority Date Filing Date
EP20206938.1A Active EP4001509B1 (fr) 2020-11-11 2020-11-11 Procédé et machine de construction destinés au compactage du sol
EP22204100.6A Active EP4144919B1 (fr) 2020-11-11 2020-11-11 Procédé et engin de construction pour le compactage du sol

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115821913A (zh) * 2022-11-03 2023-03-21 北京瑞力通地基基础工程有限责任公司 一种具有质量控制的孔内深层强夯法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3708528A1 (fr) 2019-03-12 2020-09-16 BAUER Maschinen GmbH Machine de travail et procédé de fonctionnement de la machine de travail

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
DE1040215B (de) * 1955-06-17 1958-10-02 Asea Ab Vorrichtung zur Vermeidung von Schlappseilbildung
JPH076182B2 (ja) * 1987-04-23 1995-01-30 日立建機株式会社 動圧密工法の施工管理装置
CN106149671B (zh) * 2015-03-23 2018-09-04 徐工集团工程机械股份有限公司 强夯机自动作业的控制系统和方法、及强夯机
DE102015115146A1 (de) * 2015-09-09 2017-03-09 Bauer Maschinen Gmbh Baumaschine und Verfahren zum Auf- und Abbewegen eines Hubelementes
DE102016008819A1 (de) * 2016-07-19 2018-01-25 Liebherr-Werk Nenzing Gmbh Schlagzahloptimierung
CN107829424A (zh) * 2017-11-08 2018-03-23 泰安大地强夯重工科技有限公司 一种自动遥控强夯机

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3708528A1 (fr) 2019-03-12 2020-09-16 BAUER Maschinen GmbH Machine de travail et procédé de fonctionnement de la machine de travail

Also Published As

Publication number Publication date
EP4249685B1 (fr) 2025-07-30
EP4249685A3 (fr) 2023-10-18
EP4144919A3 (fr) 2023-04-26
EP4144919B1 (fr) 2024-08-07
EP4001509B1 (fr) 2023-09-06
EP4249685C0 (fr) 2025-07-30
EP4144919A2 (fr) 2023-03-08
EP4144919C0 (fr) 2024-08-07
EP4001509A1 (fr) 2022-05-25

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