EP3828124A1 - Hebekran mit automatischem bestimmungssystem der einscherung - Google Patents

Hebekran mit automatischem bestimmungssystem der einscherung Download PDF

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Publication number
EP3828124A1
EP3828124A1 EP20209155.9A EP20209155A EP3828124A1 EP 3828124 A1 EP3828124 A1 EP 3828124A1 EP 20209155 A EP20209155 A EP 20209155A EP 3828124 A1 EP3828124 A1 EP 3828124A1
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EP
European Patent Office
Prior art keywords
reeving
lifting
configuration
double
block
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
EP20209155.9A
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English (en)
French (fr)
Other versions
EP3828124B1 (de
Inventor
Bruno RONI-DAMOND
François LEMIRE
Olivier GOLLION
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.)
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Publication date
Application filed by Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP3828124A1 publication Critical patent/EP3828124A1/de
Application granted granted Critical
Publication of EP3828124B1 publication Critical patent/EP3828124B1/de
Active legal-status Critical Current
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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
    • B66D3/043—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
    • B66C13/00—Other constructional features or details
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • 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
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical
    • 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
    • B66C23/02—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 with non-adjustable and non-inclinable jibs mounted solely for slewing movements
    • B66C23/022—Pivot axis common with column

Definitions

  • the invention relates to a lifting crane comprising a jib and a lifting device with double reeving shaped to distribute and lift a load along the jib.
  • It relates more particularly to a lifting crane in which the lifting device is reversibly configurable between two reeving configurations including a single reeving configuration with two lifting legs and a double reeving configuration with four lifting legs, and where the lifting device lifting device comprising a reeving change system making it possible to change reeving between the single reeving configuration and the double reeving configuration.
  • the invention finds a preferred, and non-limiting, application in the field of tower cranes.
  • the document FR3061163 describes an example of a lifting crane provided with such a lifting device reversibly configurable between a single reeving configuration and a double reeving configuration.
  • a lifting crane comprises a control / command unit controlling all of the crane movements in order to guarantee correct use within the authorized limits of the crane, and in particular to guarantee the stability of the crane by constantly checking that the load suspended on the lifting device at the reach measured on the boom is less than a maximum load authorized by a predefined load curve.
  • this suspended load control function is performed by a moment bar calculation which makes it possible to directly measure an elastic deformation of the deflection under the suspended load moment, with numerous disadvantages including the cost of such control / command units and the complexity of implementation.
  • control / command unit it is necessary for the control / command unit to be aware of the number of lifting legs, in other words of the reeving configuration between the single reeving configuration and the double reeving configuration.
  • the reeving configuration is known in a declarative mode, that is to say that it is the crane pilot who declares the current reeving configuration on an interface. Consequently, the stability of the crane, and therefore compliance with safety conditions, will depend on the correct declaration of the reeving configuration by the pilot; it being noted that poor consideration of the number of sections involved can lead to accepting an overload of a factor of 2 compared to the maximum authorized load, with serious consequences such as for example a tilting of the crane.
  • the invention proposes to eliminate this declarative mode of the reeving configuration, and by the same to eliminate the aforementioned drawbacks associated with its implementation, including mainly the risks of false declarations, erroneous declarations or late declarations.
  • the invention relates to a lifting crane comprising a jib and a lifting device with double reeving designed to distribute and lift a load along the jib, said lifting device being reversibly configurable between two reeving configurations. including a single reeving configuration with two lifting legs and a double reeving configuration with four lifting legs, and the lifting device including a reeving change system allowing to make a change of reeving between the single reeving configuration and the double reeving configuration , and conversely, said lifting crane being remarkable in that it comprises an automated system for determining the reeving configured to automatically determine the reeving configuration between the single reeving configuration and the double reeving configuration.
  • the invention is based on an automated method of determining the reeving configuration, rather than on a declarative mode, which makes it possible to make the recognition of the reeving configuration more reliable and thus makes it possible to automatically change the load curve. (adaptation of the load curve according to the number of lifting legs) without a decision by the crane operator, and by making sure to always have the correct load curve, in particular during the transition phases, during the reeving change.
  • the invention also makes it possible to make the recognition of the reeving configuration more reliable without using a moment bar calculation which, in addition to being expensive, is complicated to implement.
  • the automated determination of the reeving configuration relies on the detection of the absence / presence of the secondary block at a reference location, which has the advantage of having a reliable detection and thus a determination of the configuration. equally reliable hauling system.
  • the automated system for determining the reeving comprises a storage module connected to the control / command unit for storing at least one last reeving configuration determined by the control / command unit, and the control unit / command is conformed to automatically determine the reeving configuration also as a function of said last reeving configuration stored in the storage module.
  • the control / command unit can determine the new reeving configuration and check whether this determination is consistent with the last reeving configuration stored in the memory. Also, the control / command unit can verify the correct progress or not of a change of reeving, so as to be able to deduce the new reeving configuration in a safe manner and, once the new reeving configuration has been determined, this is stored in the storage module until the next reeving change.
  • the system for detecting the presence of the secondary block is configured to detect the presence / absence of the secondary block inside the block housing occupied by the secondary block in the simple reeving and / or in the configuration. 'location above the main block occupied by the secondary block in the double reeving configuration.
  • this storage location is located at the foot of the boom.
  • the invention makes it possible to secure the reeving changes, and therefore to avoid erroneous operations.
  • the lifting crane comprises a lifting winch provided with a lifting drum cooperating with the lifting cable to move the load up and down, said lifting winch being equipped with a load sensor.
  • unwinding suitable for measuring an unwound length of the lifting cable
  • the control unit is configured to compare the unwound lengths of the lifting cable at the start of a first automated sequence and at the start of a second automated sequence that follows or precedes said first automated sequence.
  • the control / command unit is configured to automatically determine the reeving configuration also based on the comparison between the unwound lengths of the lifting cable at the start of a first automated sequence and at the start of a second sequence automated sequence which follows or precedes said first automated sequence.
  • a load sensor coupled to a lifting strand of the lifting cable for measuring a lifting tension on said lifting strand
  • the control / command unit is connected to the load sensor and is configured to calculate.
  • a load value as a function of said lifting tension on said lifting strand and of the reeving configuration automatically determined by said control / command unit.
  • the invention indeed finds an advantageous application for calculating a value of the load suspended on the lifting legs, reliably and without declarative mode, thus offering a reliable solution making it possible to overcome human error and thus improve the level of security.
  • control / command unit is configured to compare the value of the load with a maximum permitted load.
  • the configuration of the lifting device is determined automatically also as a function of the comparison between the unwound lengths of the lifting cable at the start of a first automated sequence and at the start of a second automated sequence which follows or precedes said first. automated sequence.
  • control method comprises the step of comparing the value of the load with a maximum authorized load.
  • a lifting crane 1 of the tower crane type, comprises a distribution boom 2 mounted on a tower 3 (also called a mast) at the foot 20 of the boom 2.
  • a tower 3 also called a mast
  • the foot 20 of the boom 2 is rotatably mounted on the tower 3 along a vertical axis.
  • the boom 2 can be extended to the other side of the tower 3 by a counter-boom 30, generally provided with weights.
  • the lifting crane 1 further comprises a lifting device 4 with double reeving shaped to distribute a load (not shown) along the jib 2, this lifting device 4 running on a track formed on the jib 2, between the foot 20 and the point 21 of the boom 2, also called the free end of the boom 2.
  • This lifting device 4 comprises a distributor trolley 5 which comprises a structure 50 suspended on the raceway by front and rear primary rolling members formed of rollers or wheels rolling on the raceway.
  • This suspended structure 50 supports pulleys which guide a lifting cable 40.
  • the suspended structure 50 is connected to a distribution system 55 suitable for moving the distributor carriage 5 along the raceway in a forward direction (in other words in the direction of the point 21 of the arrow 2, to the right in the figures). and a rear direction (in other words in the direction of the foot 20 of the arrow 2, to the left in the figures) opposite.
  • this distribution system 55 comprises a motor 56 driving a distribution winch 57 coupled to a distribution cable 58 having strands fixed on either side of the distributor carriage 5 and which circulates to the point 21 of the boom 2 .
  • the distributor trolley 5 further comprises a main block 51 suspended from the suspended structure 50 by the lifting cable 40.
  • This main block 51 supports a lifting member 52 at the bottom; this lifting member 52 being provided for hooking up the load and being able to take the form of a hook articulated on the main block 51.
  • the lifting device 4 comprises a reeving change system enabling a reeving change to be made reversibly between the single reeving configuration and the double reeving configuration, and vice versa.
  • This reeving change system comprises a remaining carriage 6 which is movable on the track.
  • the remaining carriage 6 comprises a frame 60 suspended on the raceway by secondary front and rear rolling members formed of rollers or wheels rolling on the raceway.
  • the suspended frame 40 is open on the front, allowing entry / exit of the distributor trolley 3.
  • This reeving change system further comprises a secondary block 61 supported by the suspended frame 60 of the remaining carriage 6 in double reeving configuration.
  • the locking / unlocking mechanism comprises support members integral with the suspended frame 60 of the remaining carriage 6 and on which the secondary block 61 is suspended at a location above the main block in the double reeving configuration, and the main block 51 comprises the block housing 55 arranged to at least partially house the secondary block 61 in the simple reeving configuration.
  • the lifting device 4 is arranged to pass from the single reeving configuration to the double reeving configuration, and vice versa, by moving the distributor trolley 5 with its main block 51, and to do this the reeving change system and more.
  • its locking / unlocking mechanism are configured to pass from the single hauling configuration to the double reeving configuration, and vice versa, by acting on the distribution system (to move the distributor trolley 5) and on the lifting cable 40.
  • the lifting crane 1 comprises a lifting system 45 provided with a motor 46 driving a lifting winch 47 provided with a drum lifting device coupled to the lifting cable 40 on which the main block 51 is suspended, and which runs up to the point 21 of the jib 2.
  • the lifting crane 1 further comprises an automated system for determining the reeving 7 configured to automatically determine the reeving configuration between the single reeving configuration and the double reeving configuration.
  • This presence detection system 8 may include a first means for detecting the presence / absence of the secondary block 61 inside the block housing 55 occupied by the secondary block 61 in the simple reeving configuration.
  • a first means for detecting the presence / absence of the secondary block 61 inside the block housing 55 occupied by the secondary block 61 in the simple reeving configuration.
  • This first means can for example comprise a contact sensor, a mechanical sensor, an electrical sensor, an optical sensor, ... arranged for example in front of or inside the muffle housing 55.
  • This presence detection system 8 can comprise a second means for detecting the presence / absence of the secondary block 61 at the location above the main block 51 occupied by the secondary block 61 in the double reeving configuration, and in particular the presence / absence of the secondary block 61 in suspension on the support members provided on the remaining carriage 6.
  • This second means can for example comprise a contact sensor, a mechanical sensor, an electrical sensor, an optical sensor, ... arranged for example in front of or on the support members.
  • This presence detection system 8 may include a third means for detecting the presence / absence of the remaining trolley 6 at the storage location (under the foot 20 of the boom 2 in the illustrated embodiment), insofar as the presence / absence of the remaining carriage 6 at the storage location is correlated with the location of the secondary block 61 and with the reeving configuration.
  • the lifting device 4 is in the simple hauling configuration, and conversely if the remaining trolley 6 is absent from the storage location then the lifting device 4 is in double hauling configuration.
  • This presence detection system 8 can comprise all or part of the first means, of the second means and of the third means described above.
  • the presence detection system 8 comprises the third means, visible on the Figure 3 , which comprises a proximity sensor 80 associated with a stop 81 mounted to slide in translation on a fixed structural element 22 of the lifting crane 1 placed at the level of the foot 20 of the jib 2, so that the stop 81 is located in face of the remaining carriage 6 when the latter is in the storage location, under the foot 20 of the boom 2.
  • This stop 81 comprises a rod 82 extended by an enlarged head 83.
  • the rod 82 is slidably mounted on the structural element 22 and, as such, the rod 82 passes through this structural element 22 in an orifice or bearing.
  • the rod 82 has a free front end provided with an abutment surface 84 provided so that the remaining carriage 6 abuts against said abutment surface 84.
  • the remaining carriage 6 may have, on the rear, a rear stopper 63 suitable for resting on the stop surface 84.
  • This stop surface 84 is enlarged relative to the rod 82, and is in particular in the form of a disc with a diameter greater than the diameter of the rod 82 if the latter is cylindrical.
  • the enlarged head 83 has a detection surface 85 which is planar and inclined relative to a sliding direction of the stop 81 on the structural element 22.
  • an elastic return member 86 interposed between the structural element 22 and the abutment surface 84, where this return member 86 is in the form of a helical compression spring mounted around the rod 82.
  • the proximity sensor 80 is in turn fixedly mounted on the arrow 2 and is disposed opposite the detection surface 85 of the enlarged head 83 of the stop 81, where the proximity sensor 80 is configured to detect and measure the distance. between said proximity sensor 80 and said detection surface 85.
  • This proximity sensor 80 can for example be an inductive sensor or a light sensor (infrared sensor, etc.).
  • the stopper 81 In the detection position, the stopper 81 has slid (towards the rear), compared to the rest position, which contributes to a modification of the distance between the proximity sensor 80 and the detection surface 85, and also to compression of the return member 86 between the structural element 22 and the stop surface 84. It should be noted that the detection surface 85 is inclined in the direction of a reduction in the distance between the proximity sensor 80 and the detection surface 85 when the stop 81 has slid (towards the rear) from its rest position towards the detection position.
  • control / command unit 9 makes it possible to automatically determine the reeving configuration as a function of the detection carried out by the presence detection system 8.
  • the automated system for determining the reeving 7 comprises a storage module 90 (or memory) connected to the control / command unit 9 to store at least one last reeving configuration determined by the control / command unit. 9.
  • the last reeving configuration is stored in this storage module 90, so that when a reeving change is made, the control / command unit 9 is configured to automatically determine the reeving configuration also in function of this last reeving configuration stored in the storage module.
  • the new reeving configuration has been determined, on the basis at least of the detection made by the presence detection system 8 and of the last reeving configuration stored, it is this new reeving configuration which is stored in the control module. storage 90 and which therefore becomes the last reeving configuration. In other words, the reeving configuration is updated in the storage module 90 on each reeving change.
  • the control / command unit 9 can also be connected to an unwinding sensor provided on the lifting winch 47 and able to measure an unwound length of the lifting cable 40.
  • the control / command unit 9 can compare the values. unwound lengths of the lifting cable 40 at the start of a first automated sequence and at the start of a second automated sequence which follows or precedes this first automated sequence, and the control / command unit 9 can thus automatically determine the reeving configuration also depending on this comparison between the unwound lengths of the lifting cable 40.
  • control / command unit 9 establishes the presence of an error and automatically restarts the current sequence and / or emits an alarm.
  • control / command unit 9 confirms that the reeving configuration is the double reeving configuration if no error has been detected, and stores this double reeving configuration in the storage module 90.
  • control / command unit 9 confirms that the reeving configuration is the simple reeving configuration if no error has been detected, and stores this simple reeving configuration in the storage module 90.
  • the lifting crane 1 can also include a load sensor 91 coupled to a lifting strand of the lifting cable 90 to measure a lifting tension on this lifting strand.
  • control / command unit 9 is connected to this load sensor 91 and is configured to calculate a value of the load as a function of the lifting tension measured on this lifting strand and of the determined reeving configuration. automatically by the control / command unit 9, insofar as a single reeving configuration corresponds to a distribution of the load on two lifting legs, and a double reeving configuration corresponds to a distribution of the load on four lifting legs.
  • control / command unit 9 can compare the value of the load with a maximum authorized load, and consequently the control / command unit 9 can act on the movement of the distributor trolley 5 and the movement of the lifting cable. 40 if the maximum authorized load is exceeded, and can in particular stop any movement of the load if the maximum authorized load is exceeded.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Control And Safety Of Cranes (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP20209155.9A 2019-11-29 2020-11-23 Hebekran mit automatischem bestimmungssystem der einscherung Active EP3828124B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1913446A FR3103803B1 (fr) 2019-11-29 2019-11-29 Grue de levage avec système de détermination automatisée du mouflage

Publications (2)

Publication Number Publication Date
EP3828124A1 true EP3828124A1 (de) 2021-06-02
EP3828124B1 EP3828124B1 (de) 2024-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20209155.9A Active EP3828124B1 (de) 2019-11-29 2020-11-23 Hebekran mit automatischem bestimmungssystem der einscherung

Country Status (4)

Country Link
US (1) US11753284B2 (de)
EP (1) EP3828124B1 (de)
ES (1) ES2982697T3 (de)
FR (1) FR3103803B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3137908B1 (fr) * 2022-07-12 2025-01-10 Manitowoc Crane Group France Procédé automatique pour la détermination lors d’un levage d’une position physique de fin de course d’un moufle d’une grue à tour
FR3139561B1 (fr) * 2022-09-14 2024-12-20 Manitowoc Crane Group France Engin de levage avec changement de mouflage automatisé

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU397470A1 (ru) * 1969-02-06 1973-09-17 Грузовой полиспаст переменной кратности для стреловых кранов
FR3061163A1 (fr) 2016-12-23 2018-06-29 Manitowoc Crane Group France Grue de levage comprenant un dispositif de levage a double mouflage
FR3061164A1 (fr) 2016-12-23 2018-06-29 Manitowoc Crane Group France Grue de levage comprenant un dispositif de levage a double mouflage
CN109879181A (zh) * 2019-03-13 2019-06-14 科曼萨建设机械（杭州）有限公司 动臂塔机的自动换倍率转换装置及其使用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463394A (en) * 1945-10-17 1949-03-01 Carl B King Hoist
DE2116544A1 (de) * 1971-04-05 1972-11-23 F.B. Kroell A/S, Roedovre (Dänemark) Umschervorrichtung für Windwerke mit einer mehrsträngig aufgehängten Unterflasche
US3993287A (en) * 1973-02-09 1976-11-23 Linden-Alimak Ab Method and device of reblocking to an increased or reduced number of rope parts at a hoisting gear
US6926103B1 (en) * 2001-07-02 2005-08-09 Itrec B.V. Splittable block on a derrick

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU397470A1 (ru) * 1969-02-06 1973-09-17 Грузовой полиспаст переменной кратности для стреловых кранов
FR3061163A1 (fr) 2016-12-23 2018-06-29 Manitowoc Crane Group France Grue de levage comprenant un dispositif de levage a double mouflage
FR3061164A1 (fr) 2016-12-23 2018-06-29 Manitowoc Crane Group France Grue de levage comprenant un dispositif de levage a double mouflage
CN109879181A (zh) * 2019-03-13 2019-06-14 科曼萨建设机械（杭州）有限公司 动臂塔机的自动换倍率转换装置及其使用方法

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Publication number Publication date
ES2982697T3 (es) 2024-10-17
US11753284B2 (en) 2023-09-12
US20210188599A1 (en) 2021-06-24
FR3103803B1 (fr) 2022-02-11
EP3828124B1 (de) 2024-04-24
FR3103803A1 (fr) 2021-06-04

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