EP4049960A1 - Hubvorrichtung mit doppelter einscherung und drehverriegelungsmechanismus mit schnappschloss - Google Patents

Hubvorrichtung mit doppelter einscherung und drehverriegelungsmechanismus mit schnappschloss Download PDF

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Publication number
EP4049960A1
EP4049960A1 EP21196980.3A EP21196980A EP4049960A1 EP 4049960 A1 EP4049960 A1 EP 4049960A1 EP 21196980 A EP21196980 A EP 21196980A EP 4049960 A1 EP4049960 A1 EP 4049960A1
Authority
EP
European Patent Office
Prior art keywords
latch
bolt
locking channel
double
locking
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
EP21196980.3A
Other languages
English (en)
French (fr)
Other versions
EP4049960B1 (de
Inventor
Jonathan CHALAVON
Adrien GOURRU
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 EP4049960A1 publication Critical patent/EP4049960A1/de
Application granted granted Critical
Publication of EP4049960B1 publication Critical patent/EP4049960B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
    • B66D3/10—Applications of braking or detent devices
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/043—Block and tackle system with variable number of cable parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/01—General aspects of mobile cranes, overhead travelling cranes, gantry cranes, loading bridges, cranes for building ships on slipways, cranes for foundries or cranes for public works
    • B66C2700/012—Trolleys or runways
    • B66C2700/017—Installations characterised by their destination or by the load-engaging element for as far as the trolley is essential
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure

Definitions

  • the invention relates to a double-reeving lifting device for a lifting machine, as well as to a lifting machine and a lifting method associated therewith.
  • the invention finds a favorite, and non-limiting, application for a lifting device such as a crane, and in particular a tower crane.
  • a double-reeving lifting device is reversibly configurable between two reeving configurations including a single reeving configuration with two lifting strands and a double-reeving configuration with four lifting strands, where the double-reeving lifting device comprises a system reeving changeover allowing a change of reeving between the single reeving configuration and the double reeving configuration.
  • the bottom block is suspended on the hoisting gear by a hoist rope connected with a hoist winch to raise/lower the bottom block, and this hoist rope passes through the top block, so that the connected configuration and the disconnected configuration correspond respectively to a double reeving configuration and a single reeving configuration, or vice versa, of the double reeving lifting device, depending on the passage of the lifting cable at the level of the upper block.
  • documents FR 1 520 612 , FR 2 137 333 , FR 2 368 431 , FR 2 131 924 , FR 2 228 024 describe double-reeving lifting devices in in which the connected configuration corresponds to the double haul configuration, and the disconnected configuration corresponds to the single haul configuration; the lifting cable passing below a pulley carried by the upper block.
  • the documents UK 2,176,456 , FR 2 333 743 , DE 3149 690 , OF 35 43 214 describe double reeving lifting devices in which the connected configuration corresponds to the single reeving configuration, and the disconnected configuration corresponds to the double reeving configuration; the lifting cable passing over a pulley carried by the upper block.
  • the object of the present invention is to at least partially solve the aforementioned drawbacks, by proposing a double-reeving lifting device equipped with robust reversible connection means because they are composed of a minimum of parts.
  • Another object of the invention is to provide reversible connection means equipped with a locking mechanism with moving parts mounted only on one of the two muffles, the other muffle not comprising any moving parts for connection/disconnection of the two muffles, which is advantageous in terms of maintenance and reliability
  • Another object of the invention is to reduce the bulk of the lifting device, in particular in the double-reeving configuration, in order to increase the capacity for movement along the jib.
  • Another object of the invention is to propose a lifting device with double reeving making it possible to pass automatically, without manual intervention, from the double reeving configuration to the single reeving configuration, and vice versa, in a reliable, rapid and repeated manner over time. .
  • connection/disconnection phases can be easily automated, since it suffices to control the raising/lowering movements of the lower block (by simply controlling the motorized system of the lifting winch) to switch from a disconnected configuration to a connected configuration, and vice versa.
  • the free end of the latch has a notch of complementary shape to the bolt.
  • the bolt has a cylindrical cross-section along a given diameter
  • the indentation of the free end of the latch has a bearing zone in the form of an arc of a circle.
  • the area of bearing in an arc of a circle of the indentation of the latch has a diameter equivalent to the diameter of the bolt.
  • the locking channel has a width substantially equivalent to the diameter of the bolt.
  • the notch of the free end of the latch is delimited by two opposite edges on which the bolt can exert a thrust, namely a proximal edge, facing the mouth of the locking channel in the neutral position , and a distal rim, where the proximal rim and the distal rim respectively have a length proximal and a distal length measured radially from the pivot axis, and the proximal length is less than the distal length.
  • the locking channel has a bottom, capable of stopping sliding of the bolt in the direction of entry, where the latch is arranged between the mouth and the bottom of the locking channel.
  • the axis of pivoting of the latch is orthogonal to the main axis.
  • the locking mechanism comprises two face-to-face latches, pivotally mounted on the frame on either side of the locking channel, said two latches being pivotable symmetrically with respect to a main plane including the main axis and parallel to the pivot axis of each of the two latches.
  • the two latches are identical and symmetrical with respect to the main plane.
  • the frame of the complementary locking structure comprises two face-to-face flanges, between which the bolt is fixed.
  • the frame of the locking mechanism comprises two plates between which the latch is pivotally mounted.
  • the at least one striker orifice comprises a second oblong section in a direction parallel to the main axis, placed in the middle of the first oblong section.
  • the lifting device comprises a distributor carriage movably mounted on the jib and connected to a distribution system capable of moving the distributor carriage along the jib in a forward direction and an opposite rear direction, and in which the lower block is suspended on said dispensing carriage by the lifting cable.
  • the movements of the lower muffle, in the connection phase and in the disconnection phase are automated.
  • the movements of the lower muffle are controlled at reduced speed, below a predefined speed threshold.
  • a double reeving lifting device 1 for a lifting machine, such as for example a crane, which has a jib (not shown) and a distributor carriage 9 movably mounted on the jib and connected to a system distribution capable of moving the distributor carriage 9 along the arrow in a forward direction and an opposite rear direction; this distribution system being for example a distribution winch which cooperates with a distribution cable for the displacement of the distribution carriage 9.
  • the lower block 3 supports lower cable return means, such as two pulleys 31, for the passage of the lifting cable
  • the upper block 4 supports upper cable return means, such as by a pulley 41, for the passage of the lifting cable.
  • the double-reeving lifting device 1 is shaped to raise/lower a load along the jib of the lifting device.
  • the connected configuration and the disconnected configuration correspond respectively to a double configuration reeving and a single reeving configuration, or vice versa, of the double reeving lifting device 1; the simple haul configuration being associated with support for the hook 30 (and therefore the load) by two lifting strands of the hoisting cable, and the double haul configuration being associated with support for the hook 30 (and therefore the load) by four lifting strands of the lifting cable.
  • the reversible connection means comprise a locking mechanism 5 mounted on the lower block 3, and a complementary locking structure 6 mounted on the upper block 4 and capable of cooperating with the locking mechanism 5.
  • the upper block 4 supports in the upper part, opposite the mouth 63 of the complementary locking structure 6, an upper abutment 43. Furthermore, the flanges 61 diverge from each other at the level of entry 63, so that this entry 63 is flared.
  • the frame 50 has a locking channel 53 of elongated shape along the main axis (therefore along a vertical direction), where this locking channel 53 is formed by two notches made opposite each other in the two plates 51 and opening on the upper edges 510 of the plates 51, so that this locking channel 53 is provided with a mouth 54 through which the bolt 62 of the complementary locking structure 6 can enter and exit the locking channel 53.
  • the mouth 54 is flared to facilitate and center the insertion of the bolt 62 inside the locking channel 53.
  • the bolt 62 has a cross section sized to be able to slide in the locking channel 53.
  • the internal distance between the two flanges 61 of the frame 60 is greater than the thickness of the frame 50, so that the frame 50 can enter at the inside the throat of the frame 60 (therefore between the two flanges 61) via the inlet 63, which is advantageously flared to facilitate this passage.
  • the bolt 62 can slide in the locking channel 53 in an entry direction (downward) and in an exit direction (upward), opposite to the entry direction, when approaching and a relative distance between the two blocks 3, 4. It is advantageous for the bolt 62 to slide in an adjusted manner (with a reduced clearance) inside the locking channel 53.
  • This bolt 62 is advantageously of cylindrical cross-section along a given diameter.
  • the locking channel 53 has a width substantially equivalent to the diameter of the bolt 62.
  • the locking channel 53 has a bottom 55, which is located between the two pulleys 31, where this bottom 55 is able to stop sliding of the bolt according to the direction of entry. It should be noted that the two pulleys 31 are also rotatably mounted between the two plates 51.
  • the two latches 52 are arranged facing each other on either side of the locking channel 53, and are pivotally mounted on the frame 50, between the two plates 51, along parallel pivot axes; these pivot axes also being orthogonal to the main axis and also parallel to the longitudinal axis of the bolt 62.
  • the two latches 52 are pivoting symmetrically with respect to a main plane including the main axis and parallel to the axis pivoting of each of the two latches 52.
  • the two latches 52 are identical and symmetrical with respect to the main plane.
  • Each latch 52 is provided with a free termination 56 of concave shape capable of being engaged with the bolt 62, where the free termination 56 has a notch 57 of a shape complementary to the bolt 62.
  • the notch 57 of the free termination 56 of the latch 52 has an arcuate bearing zone along a diameter equivalent to the diameter of the bolt 62.
  • Each latch 52 is arranged between the mouth 54 and the bottom 55 of the locking channel 53.
  • the notch 57 of the free termination 56 is delimited by two opposite edges 571, 572 on which the bolt 62 can exert a thrust, namely a proximal edge 571, facing the mouth 54 of the locking channel 53, and a distal flange 572 facing the bottom 55 of the locking channel 53.
  • the proximal flange 571 and the distal flange 572 respectively have a proximal length and a distal length measured radially from the pivot axis , and the proximal length is less than the distal length.
  • the corresponding elastic constraint element 59 extends between the two plates 51 and has one end fixed to the latch 52, and another end fixed to the frame 50. It should be noted that, on the Figures 4 to 13 , the springs forming the elastic constraint elements 59 are all illustrated at rest, with their ends not fixed to the latches 52 and to the frame 50, for reasons of simplification.
  • the latches 52 are in the locking position and the bolt 62 is wedged inside the respective free terminations 56 of the latches 52, more precisely with the bolt 62 wedged inside the notches 57 of these terminations 56.
  • the lower block 3 can be lowered together with the upper block 4. Indeed, when the lower block 3 descends with its latches 52, these latches 52 are blocked by the bolt 62 and cannot pivot towards the proximal position according to the proximal direction of rotation (pivoting upwards). Thus, the latches 52 remain blocked in the locking position with the bolt 62 which, as a reminder, is integral with the upper block 4.
  • the upper block 4 is therefore connected to the lower block 3 and therefore descends with the latter.
  • the lower muffle 3 is first mounted (with the upper muffle 4), as shown schematically by the arrow MO, until the upper muffle 4 is at the top stop on the arrow, and more specifically until the upper stop 43 of the upper block 4 is in abutment against the distributor carriage 9 (see Figure 1 to the right).
  • the upper stop 43 engages and abuts.
  • latches 52 pivot towards the bottom, while the bolt 62 slides towards the bottom 55, until the bolt 62 leaves the inside of the free ends 56 of the latches 52 (and even leaves contact with the latches 52), and then, as illustrated in Figure 6 , the latches 52 return to the neutral position under the effect of their associated elastic constraint elements 59, and the bolt 62 is under the latches 52 (or even is placed in the bottom 55 of the locking channel 53).
  • the lower block 3 is moved downwards, as shown schematically by the arrow DE, so that the bolt 62 slides inside the locking channel 53 in the exit direction (upwards), until it comes to rest against the distal flanges 572 of the latches 52, thus pushing the latches 52 which then pivot in the direction of proximal rotation (upward) until they reach their proximal positions, as shown in Figure 8 , thereby allowing the bolt 62 to exit the locking channel 53 and disengage from the latches 52.
  • connection phase for switching from the disconnected configuration to the connected configuration, with reference to the Figures 10 to 13 .
  • the upper block 4 is suspended above the lower block 3 and the latches 52 are in the neutral position.
  • the lower muffle 3 begins by being raised, as shown schematically by the arrow MO, for a relative ruzement between the two muffles 3, 4, until, with reference to the Picture 11 , the bolt 62 enters the locking channel 53 through the mouth 54 and comes into contact with the proximal edges 571 of the latches 52, thus bringing the upper block 4 into a high stop on the arrow, and more specifically until the upper stop 43 of the upper block 4 is in abutment against the dispensing trolley 9.
  • the bolt 62 exerts a thrust on the proximal edges 571 of the latches 52, while sliding inside the locking channel 53 according to the entry direction (downwards), to bring the latches 52 distally, until the bolt 62 leaves contact with the proximal edges 571 of the latches 52, at which time the latches 52 pivot in the proximal (upward) direction of rotation until that the distal edges 572 of the latches 52 in turn come into contact with the bolt 62, as shown schematically in Picture 12 .
  • the bolt 62 is engaged inside the free ends 56 of the latches 52.
  • the lower block 3 is then moved downwards, as shown schematically by the arrow DE, so that the bolt 62 slides inside the locking channel 53 in the exit direction (upwards), and brings the latches 52 in the locking position, until the bolt 62 is jammed inside the free ends 56 of the latches 52 and is therefore locked in sliding in the locking channel 53 according to the exit direction, and thus the lower block 3 and the upper block 4 are connected, and then the lower block 3 can continue to descend with the upper block 4 in the connected configuration.
  • connection phase in the connection phase and in the disconnection phase, only the control of the raising/lowering movements of the lower muffle 3 makes it possible to pass from a connected configuration to the disconnected configuration, and vice versa.
  • the control of the up/down movements of the lower block 3 takes place by controlling the lifting winch.
  • connection and disconnection phases it is advantageous to automate the movements of the lower block 3, in the connection phase and in the disconnection phase, by means of a control/command unit which controls the lifting winch.
  • a control/command unit which controls the lifting winch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Jib Cranes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP21196980.3A 2020-09-16 2021-09-15 Hubvorrichtung mit doppelter einscherung und drehverriegelungsmechanismus mit schnappschloss Active EP4049960B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2009385A FR3114090B1 (fr) 2020-09-16 2020-09-16 Dispositif de levage à double mouflage avec mécanisme de verrouillage à loquet

Publications (2)

Publication Number Publication Date
EP4049960A1 true EP4049960A1 (de) 2022-08-31
EP4049960B1 EP4049960B1 (de) 2023-12-20

Family

ID=73139032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21196980.3A Active EP4049960B1 (de) 2020-09-16 2021-09-15 Hubvorrichtung mit doppelter einscherung und drehverriegelungsmechanismus mit schnappschloss

Country Status (5)

Country Link
US (1) US11591191B2 (de)
EP (1) EP4049960B1 (de)
CN (1) CN114261875B (de)
FR (1) FR3114090B1 (de)
PT (1) PT4049960T (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3135259B1 (fr) * 2022-05-04 2024-05-03 Manitowoc Crane Group France Dispositif de levage à double mouflage avec mécanisme amélioré de verrouillage à loquet
FR3139561B1 (fr) * 2022-09-14 2024-12-20 Manitowoc Crane Group France Engin de levage avec changement de mouflage automatisé
KR20240177182A (ko) * 2023-06-19 2024-12-27 현대자동차주식회사 주행영상기록장치 제어방법 및 주행영상기록장치
CN118220976A (zh) * 2024-03-21 2024-06-21 中联重科建筑起重机械有限责任公司 塔式起重机及其吊钩装置

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306469A (en) * 1965-06-22 1967-02-28 Richier Sa Load hoisting tackle
FR1520612A (fr) 1967-02-22 1968-04-12 Potain & Cie Ets F Dispositif pour augmenter la charge et la portée maxima d'une flèche de grue distributrice
FR2131924A1 (de) 1971-04-05 1972-11-17 Kroll As F
FR2137333A1 (de) 1971-05-12 1972-12-29 Potain Sa
FR2228024A1 (en) 1973-05-02 1974-11-29 Richier Sa Changeover for tower crane lifting hook - latch changes four strand pulley system to two strand
FR2333743A1 (fr) 1975-12-01 1977-07-01 Pingon Manubat Sa Chariot distributeur pour appareils de levage
FR2368431A1 (fr) 1976-10-22 1978-05-19 Potain Sa Double mouflage automatique pour le chariot distributeur d'une grue a tour
DE2845874A1 (de) * 1978-10-21 1980-04-24 Elba Maschinenfabrik Kaiser Gm Vorrichtung zum umscheren des hubseiles bei kraenen
DE3149690A1 (de) 1981-12-15 1983-06-23 Liebherr-Werk Biberach Gmbh, 7950 Biberach Vorrichtung zum umscheren des hubseils bei kranen
DE3543214A1 (de) 1985-06-13 1986-12-18 Liebherr-Werk Bischofshofen GmbH, Bischofshofen Vorrichtung zum umscheren der durch ein seil mit der laufkatze eines krans verbundenen unterflasche des kranhakens
GB2176456A (en) 1985-04-26 1986-12-31 Man Wolffkran Apparatus for changing over the operation of the lifting cable in a crane
ITMI20101302A1 (it) * 2010-07-15 2012-01-16 F B F Lli Butti S R L Dispositivo per variare automaticamente il sistema di taglia in apparecchi sollevatori, particolarmente per gru a torre.

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GB739720A (en) * 1952-11-11 1955-11-02 Priestman Brothers Improvements relating to lifting tongs and the like
SE379523B (de) * 1971-07-12 1975-10-13 Potain Sa
DE3914523C1 (de) * 1989-05-02 1990-04-26 Deutsche Gesellschaft Fuer Wiederaufarbeitung Von Kernbrennstoffen Mbh, 3000 Hannover, De
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KR100930278B1 (ko) * 2008-01-28 2009-12-10 명신산업기계(주) 갠트리 크레인용 레일 클램프
WO2010090722A2 (en) * 2009-02-04 2010-08-12 Freelance Inventors Inc. Remotely actuatable pendulum binary latch
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JP4770978B2 (ja) * 2009-07-16 2011-09-14 コベルコクレーン株式会社 建設機械のガントリ構造
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CN203529798U (zh) * 2013-10-29 2014-04-09 中联重科股份有限公司 起吊装置及起重机
CN103588090A (zh) * 2013-11-26 2014-02-19 国家电网公司 一种快速实现滑车组倍率转换的起重吊钩
FR3015963B1 (fr) * 2013-12-27 2016-01-22 Zedel Dispositif de mouflage ameliore
GB2550898B (en) * 2016-05-27 2021-07-07 Bamford Excavators Ltd Tow hitch assembly
FR3061164B1 (fr) * 2016-12-23 2019-05-24 Manitowoc Crane Group France Grue de levage comprenant un dispositif de levage a double mouflage
US10308485B2 (en) * 2017-08-14 2019-06-04 Sea Energy Technology Co., Ltd. Offshore platform lifting device
FR3072084B1 (fr) * 2017-10-09 2019-09-27 Manitowoc Crane Group France Grue a fleche relevable avec dispositif de verrouillage de la fleche en configuration relevee
FR3072085B1 (fr) * 2017-10-09 2019-11-08 Manitowoc Crane Group France Grue a fleche relevable avec dispositif de verrouillage de la fleche en configuration relevee
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Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306469A (en) * 1965-06-22 1967-02-28 Richier Sa Load hoisting tackle
FR1520612A (fr) 1967-02-22 1968-04-12 Potain & Cie Ets F Dispositif pour augmenter la charge et la portée maxima d'une flèche de grue distributrice
FR2131924A1 (de) 1971-04-05 1972-11-17 Kroll As F
FR2137333A1 (de) 1971-05-12 1972-12-29 Potain Sa
FR2228024A1 (en) 1973-05-02 1974-11-29 Richier Sa Changeover for tower crane lifting hook - latch changes four strand pulley system to two strand
FR2333743A1 (fr) 1975-12-01 1977-07-01 Pingon Manubat Sa Chariot distributeur pour appareils de levage
FR2368431A1 (fr) 1976-10-22 1978-05-19 Potain Sa Double mouflage automatique pour le chariot distributeur d'une grue a tour
DE2845874A1 (de) * 1978-10-21 1980-04-24 Elba Maschinenfabrik Kaiser Gm Vorrichtung zum umscheren des hubseiles bei kraenen
DE3149690A1 (de) 1981-12-15 1983-06-23 Liebherr-Werk Biberach Gmbh, 7950 Biberach Vorrichtung zum umscheren des hubseils bei kranen
GB2176456A (en) 1985-04-26 1986-12-31 Man Wolffkran Apparatus for changing over the operation of the lifting cable in a crane
DE3543214A1 (de) 1985-06-13 1986-12-18 Liebherr-Werk Bischofshofen GmbH, Bischofshofen Vorrichtung zum umscheren der durch ein seil mit der laufkatze eines krans verbundenen unterflasche des kranhakens
ITMI20101302A1 (it) * 2010-07-15 2012-01-16 F B F Lli Butti S R L Dispositivo per variare automaticamente il sistema di taglia in apparecchi sollevatori, particolarmente per gru a torre.

Also Published As

Publication number Publication date
PT4049960T (pt) 2024-03-14
CN114261875A (zh) 2022-04-01
CN114261875B (zh) 2026-03-06
FR3114090B1 (fr) 2022-08-19
US20220081267A1 (en) 2022-03-17
EP4049960B1 (de) 2023-12-20
FR3114090A1 (fr) 2022-03-18
US11591191B2 (en) 2023-02-28

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