EP3597584B1 - Dispositif de verrouillage de flèche télescopique - Google Patents

Dispositif de verrouillage de flèche télescopique Download PDF

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Publication number
EP3597584B1
EP3597584B1 EP19181090.2A EP19181090A EP3597584B1 EP 3597584 B1 EP3597584 B1 EP 3597584B1 EP 19181090 A EP19181090 A EP 19181090A EP 3597584 B1 EP3597584 B1 EP 3597584B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
crane
telescopic
hydraulic
telescope
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
EP19181090.2A
Other languages
German (de)
English (en)
Other versions
EP3597584A1 (fr
Inventor
Thomas Heidrich
Hasko Karge
Johannes Schürmann
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.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
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 Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP3597584A1 publication Critical patent/EP3597584A1/fr
Application granted granted Critical
Publication of EP3597584B1 publication Critical patent/EP3597584B1/fr
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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
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7057—Linear output members being of the telescopic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means

Definitions

  • the present invention relates to a locking device for a crane telescope, for example for a telescopic boom or a telescopic tower of a mobile crane, by means of which the individual telescopic sections can be releasably locked with one another and for the purpose of telescoping with a telescoping cylinder of the crane telescope.
  • Such locking devices are also referred to as locking heads if they are arranged in their entirety at the movable end of the telescoping cylinder.
  • the locking mechanisms of known telescoping systems are hydraulically supplied with the hydraulic fluid necessary for the actuation via an inner passage through the telescoping cylinder. More recent solutions, at least in part, do without the supply by means of such a feedthrough, but instead take the necessary hydraulic fluid from a cylinder chamber of the telescoping cylinder. However, the valves and other control elements of the locking mechanism required for this are no longer accessible in most operative positions in such solutions when installed.
  • the object of the present invention is to remedy this problem and to enable the cylinder lock to be released even if the control electronics fail.
  • the locking device according to the invention which can be used for example in a telescopic boom or a telescopic tower of a mobile crane, has at least one, in particular two, hydraulic cylinders, which is/are assigned to a cylinder lock.
  • the locking device according to the invention can also have a telescopic locking mechanism which, for example, interacts with the cylinder lock, ie is controlled together, or acts separately from the cylinder lock and is also controlled separately.
  • a telescopic section lock can also have at least one, in particular two, hydraulic cylinders in order to actuate the lock between two telescopic sections of the crane telescope.
  • the control device can therefore also be responsible for supplying the at least one telescopic locking hydraulic cylinder and for this purpose can be in hydraulic contact both with the telescoping cylinder of the crane telescope and with the at least one telescopic locking hydraulic cylinder. While using the telescopic locking mechanism, individual telescopic sections are locked to one another in an axial position and also again can be unlocked from each other, it is the task of a cylinder lock to lock and unlock the telescoping cylinder of the crane telescope for the purpose of pushing the individual telescopic sections out and back in with the respective telescopic section.
  • the locking device has a hydraulic control device which takes the hydraulic fluid required for actuation from a cylinder chamber of the telescoping cylinder, feeds it to the hydraulic cylinders in the desired manner and from there returns it to the telescoping cylinder.
  • the control device has a valve which, when activated, i.e. even when the control electronics/actuation is intact, blocks a hydraulic connection between the extraction point on the telescoping cylinder and the hydraulic cylinder(s) of the cylinder lock. If the control electronics/control are defective, this valve automatically falls back into its non-activated basic position, so to speak, and thus opens this connection. Since the hydraulic cylinder(s) of the cylinder lock is/are connected to a cylinder space of the telescoping cylinder, the cylinder lock can be released or unlocked by the hydraulic cylinder(s) of the cylinder lock being pressed together with the corresponding cylinder space of the telescoping cylinder.
  • the invention accordingly provides emergency operation for the cylinder lock, which is initiated fully automatically, so to speak, by a failure of the control electronics/actuation and the valve falling back into its open rest position associated therewith.
  • control device has a return, via which hydraulic fluid from the telescopic section locking hydraulic cylinders and/or the cylinder locking hydraulic cylinders into the cylinder chamber of the Telescoping cylinder can be returned, and wherein the valve releases the return in a direction opposite to the return.
  • the return flow designed for returning the hydraulic fluid back into the telescoping cylinder is used in emergency operation to bring hydraulic fluid in the opposite direction from the telescoping cylinder into the hydraulic cylinder of the cylinder lock in order to ultimately release it.
  • this is only possible when the valve is in its open rest position.
  • the return comprises at least one check valve and a bypass that bypasses the at least one check valve and is opened by the valve that is open in the non-actuated rest state.
  • the bypass disables the at least one check valve, so to speak, as soon as it is opened by the valve returning to the idle state, thus enabling the hydraulic fluid to flow from the telescoping cylinder via the return line to the hydraulic cylinder of the cylinder lock.
  • the return in particular the bypass, can have an additional pressure sequence valve in addition to the valve, which releases the return in the opposite direction or opens the bypass only above a defined pressure.
  • the cylinder lock can be actuated with high pressure in the telescoping cylinder. At lower pressure in the telescoping cylinder it can perform its actual function, namely telescoping. As a result, the locking device can be brought into a position that is favorable for inspection or repair.
  • the return has a pressure accumulator, in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic section locking hydraulic cylinder and/or the cylinder locking hydraulic cylinder before it is returned to the telescoping cylinder.
  • a pressure accumulator in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic section locking hydraulic cylinder and/or the cylinder locking hydraulic cylinder before it is returned to the telescoping cylinder.
  • This pressure accumulator thus serves as an intermediate reservoir for the hydraulic fluid to be returned, which can only be returned to the telescoping cylinder later in certain working states of the telescoping cylinder and the associated pressure conditions.
  • control device can have a supply line, in particular a supply line separate from the return line, via which the hydraulic fluid from the telescoping cylinder is supplied to the telescopic section hydraulic cylinder and/or the cylinder locking hydraulic cylinder.
  • a supply line in particular a supply line separate from the return line, via which the hydraulic fluid from the telescoping cylinder is supplied to the telescopic section hydraulic cylinder and/or the cylinder locking hydraulic cylinder.
  • the hydraulic cylinders of the locking device are therefore fed exclusively via the flow, while the return serves exclusively to return the hydraulic fluid to the telescoping cylinder.
  • the feed can have a pressure accumulator, in particular a high-pressure accumulator, which receives the hydraulic fluid from the telescoping cylinder before it is fed to the telescopic section locking hydraulic cylinder and/or to the cylinder locking hydraulic cylinder.
  • the high-pressure accumulator is filled with hydraulic fluid as soon as high pressure prevails in the telescoping cylinder and can discharge this pressurized hydraulic fluid to actuate the cylinder lock or the telescopic section lock on their hydraulic cylinder.
  • a further aspect of the present invention relates to a crane telescopic cylinder, in particular for telescoping a boom or tower, with a first cylinder part, which has a fastening section designed for fastening the telescoping cylinder to a base of a crane telescope, and with a second fastening section relative to the first Cylinder part movable cylinder part, which has a crane telescopic locking device in one of the embodiments described above.
  • the locking device according to the invention can therefore be moved together with the movable cylinder part of the telescoping cylinder within the crane telescope, in particular to an inspection or repair position.
  • control device can be in fluidic contact with the annular space of the telescoping cylinder on the piston rod side. If it is the piston rod of the telescoping cylinder that is permanently connected to the base section of the crane telescope, the annular space of the telescoping cylinder on the piston rod side is pressurized when the cylinder lock is unlocked in emergency operation, so that the telescoping cylinder is retracted into an inspection or repair position after unlocking.
  • the figure 1 shows schematically a preferred embodiment of the crane telescope locking device according to the invention.
  • This includes the Hydraulic cylinder 5, which is provided for actuating a (not shown) locking of the telescopic sections 1, 2 and 3 of the telescope 4 with one another.
  • the locking device also includes a hydraulic cylinder 7, which can be coupled indirectly to one of the telescopic sections 1, 2 via interventions.
  • the corresponding telescopic section 1, 2 is in turn firmly coupled to the extendable and retractable part 19 of the telescoping cylinder 6 and can be telescoped out or in together with this and relative to the base section 3.
  • the control device 8 provided for actuating the hydraulic cylinders 5 and 7 is hydraulically connected both to the hydraulic cylinders 5 and 7 and to the annular space 20 of the telescoping cylinder 6 on the piston rod side, takes the hydraulic fluid required for actuating the hydraulic cylinders 5 and 7 from the annular space 20 and also guides it back there again.
  • the hydraulic fluid is taken from the high-pressure accumulator 16 and conducted via the two appropriately switched two-way valves 21 and 22 in the desired manner to the cylinder chamber of the hydraulic cylinder 5 and 7, respectively.
  • the two-way valves 21 and 22 in the unactuated state of rest, ie also at Connect the cylinder chamber of the hydraulic cylinder 7 to the return line 10 if the control electronics/actuator failed or are defective.
  • valves 21 and 22 In the event of a failure of the control electronics/activation for the control device 8 and its valves 9, 21, 22, these valves assume their non-actuated rest position, with the valves 21 and 22 connecting the cylinder chamber of the hydraulic cylinder 7 to the return 10 and the valve 9 to the bypass 12 opens.
  • the movable cylinder part 19 is coupled to one of the telescopic sections 1 or 2 via the hydraulic cylinder 7 at the time of the damage and is also in a position in which access to the control device 8 on the movable cylinder part 19 is not possible, the cylinder chamber of the hydraulic cylinder 7 thereby printed and the cylinder lock can be released by the annular space 20 is printed, which in the in the figure 1 shown "emergency position" of the valves 9, 21 and 22 with the hydraulic cylinder 7 is in hydraulic communication. Starting from the annular space 20 , the path to the hydraulic cylinder 7 via the flow 15 is blocked for the hydraulic fluid by the valves 21 and 22 . The same applies to the branch of the return line 10 that is blocked by means of the blocking valves 11.
  • the bypass 12 is opened by the valve 9 that is in the rest position. In order to actuate the hydraulic cylinder 7, only a sufficiently high pressure has to be applied so that the pressure sequence valve 13 opens. If the pressure is lower, the bypass 12 is also blocked by the pressure sequence valve 13 . In this case, only the hydraulic cylinder 6 is retracted, while the hydraulic cylinder 7 of the cylinder lock is not activated.
  • the cylinder lock and thus the coupling of the movable cylinder part 19 of the telescoping cylinder 6 to one of the telescoping sections 1.2 is released by pressing the annular space 20, whereupon the telescoping cylinder 6 is retracted to an inspection or repair position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Jib Cranes (AREA)

Claims (10)

  1. Dispositif de verrouillage de système télescopique de grue pourvu
    - d'au moins un vérin hydraulique de verrouillage de cylindre (7) conçu pour l'accouplement amovible d'un cylindre télescopique (6) avec un tronçon télescopique (1, 2) ;
    caractérisé en ce que le dispositif de verrouillage de système télescopique de grue comprend un dispositif de commande (8) étant en contact hydraulique avec une chambre cylindrique (20) d'un cylindre télescopique (6) du système télescopique de grue (4) et prévu pour la mise en route avec l'au moins un vérin hydraulique de verrouillage de cylindre (7) ; dans lequel
    le dispositif de commande (8) comprend un clapet (9) ouvert à l'état de repos non actionné et libérant ainsi une liaison fluidique entre la chambre de cylindre (20) du cylindre télescopique (6) et l'au moins un vérin hydraulique de verrouillage de cylindre (7).
  2. Dispositif de verrouillage de système télescopique de grue selon la revendication 1, dans lequel le dispositif de commande (8) présente un retour (10), par lequel du fluide hydraulique est recyclé du vérin hydraulique de verrouillage de cylindre (7) dans le vérin télescopique (6), et le clapet (9) ouvert libère le retour (10) dans une direction opposée au recyclage.
  3. Dispositif de verrouillage de système télescopique de grue selon la revendication 2, dans lequel le retour (10) comprend au moins un clapet anti-retour (11) et un bypass (12) contournant l'au moins un clapet anti-retour (11), lequel est ouvert par le clapet (9) ouvert à l'état de repos non actionné.
  4. Dispositif de verrouillage de système télescopique de grue selon l'une des revendications 2 ou 3, dans lequel le retour (10), notamment le bypass (12), présente en outre une vanne de commutation de pression (13), laquelle ne libère le retour (10) dans la direction opposée, respectivement, n'ouvre le bypass (12), qu'à partir d'une pression définie.
  5. Dispositif de verrouillage de système télescopique de grue selon l'une des revendications 2 à 4, dans lequel le retour (10) présente un accumulateur de pression (14), lequel recueille le fluide hydraulique provenant du vérin hydraulique de verrouillage de cylindre (7) avant son recyclage dans le cylindre télescopique (6).
  6. Dispositif de verrouillage de système télescopique de grue selon l'une des revendications 1 à 5, dans lequel le dispositif de commande (8) présente un système d'avance (15) par lequel le fluide hydraulique est mené à partir du cylindre télescopique (6) vers le vérin hydraulique de verrouillage de tronçon télescopique (5) et/ou vers le vérin hydraulique de verrouillage de cylindre (7).
  7. Dispositif de verrouillage de système télescopique de grue selon la revendication 6, dans lequel le système d'avance (15) présente un accumulateur de pression (16), lequel recueille le fluide hydraulique provenant du cylindre télescopique (6) avant qu'il ne soit amené vers le vérin hydraulique de verrouillage de cylindre (7).
  8. Dispositif de verrouillage de système télescopique de grue selon l'une des revendications 1 à 7, qui est conçu pour l'accouplement amovible de tronçons télescopiques (1, 2, 3) les uns avec les autres et pourvu d'un cylindre télescopique (6) d'une flèche télescopique de grue ou d'une tour télescopique de grue.
  9. Cylindre télescopique de grue (6) pourvu d'une première partie de cylindre (17) qui présente un segment de fixation (18) conçu pour la fixation du cylindre télescopique (6) sur une base (3) d'un système télescopique de grue (4), et pourvu d'une deuxième partie de cylindre (19) mobile par rapport à la première partie de cylindre (17) qui présente un dispositif de verrouillage de système télescopique de grue selon l'une des revendications 1 à 8.
  10. Cylindre télescopique de grue selon la revendication 9, dans lequel le dispositif de commande (8) est en contact fluidique avec l'espace annulaire (20) du côté tige de piston du cylindre télescopique (6).
EP19181090.2A 2018-07-20 2019-06-19 Dispositif de verrouillage de flèche télescopique Active EP3597584B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018117630.9A DE102018117630B4 (de) 2018-07-20 2018-07-20 Kranteleskop-Verriegelungsvorrichtung

Publications (2)

Publication Number Publication Date
EP3597584A1 EP3597584A1 (fr) 2020-01-22
EP3597584B1 true EP3597584B1 (fr) 2022-06-08

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Application Number Title Priority Date Filing Date
EP19181090.2A Active EP3597584B1 (fr) 2018-07-20 2019-06-19 Dispositif de verrouillage de flèche télescopique

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US (1) US11629034B2 (fr)
EP (1) EP3597584B1 (fr)
DE (1) DE102018117630B4 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3950564A4 (fr) * 2019-04-04 2023-01-04 Tadano Ltd. Machine de travail
CN111056445B (zh) * 2020-02-28 2021-04-30 徐州建机工程机械有限公司 一种安全塔式起重机锁机控制装置及控制方法
JP2022167829A (ja) 2021-04-23 2022-11-04 タダノ デマグ ゲーエムベーハー 固定およびロックユニットを有する伸縮ジブを有する車両クレーン
DE102022113302B4 (de) 2022-05-25 2023-12-14 Liebherr-Werk Ehingen Gmbh Hydrauliksystem zur Druckversorgung eines hydraulischen Aktuators

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327533A (en) * 1980-08-13 1982-05-04 Kidde, Inc. Crane boom extending, retracting and cooperative latching arrangement
DE19811813B4 (de) 1998-03-18 2005-11-24 Grove U.S. LLC (n.d.Ges.d.Staates Delaware) Seitliche Auslegerverriegelung
DE102009006292B4 (de) * 2009-01-27 2015-03-26 Manitowoc Crane Group France Sas Verriegelungssystem für Teleskopkranausleger mit verschiebbarer Verriegelungseinheit
AT12645U1 (de) * 2011-03-10 2012-09-15 Palfinger Ag Ladekran-ausleger
JP6223071B2 (ja) * 2013-08-30 2017-11-01 株式会社タダノ クレーン装置のブーム伸縮機構
JP5882977B2 (ja) * 2013-11-26 2016-03-09 株式会社タダノ クレーンのブーム伸縮装置
EP3138805B1 (fr) 2014-05-20 2020-08-05 Xuzhou Heavy Machinery Co., Ltd. Dispositif d'allongement de boulon monocylindrique et grue
CN104591012B (zh) * 2014-12-29 2017-02-08 三一汽车起重机械有限公司 用于单缸插销式伸缩臂的液压控制系统及工程机械
JP6476996B2 (ja) * 2015-02-24 2019-03-06 株式会社タダノ 伸縮ブームの伸縮装置
CN104773653B (zh) * 2015-04-08 2017-03-15 徐州重型机械有限公司 一种起重机单缸插销伸缩控制方法、系统及伸臂结构
CN108698806B (zh) * 2016-03-03 2020-01-21 株式会社多田野 伸缩机构
DE202018102111U1 (de) 2018-04-17 2018-04-24 Montanhydraulik Gmbh Verriegelungseinheit

Also Published As

Publication number Publication date
US11629034B2 (en) 2023-04-18
US20200024111A1 (en) 2020-01-23
DE102018117630B4 (de) 2020-07-09
DE102018117630A1 (de) 2020-01-23
EP3597584A1 (fr) 2020-01-22

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