EP3722245B1 - Système et procédé de réglage à distance d'une tension dans un câble distributeur de grue - Google Patents

Système et procédé de réglage à distance d'une tension dans un câble distributeur de grue Download PDF

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Publication number
EP3722245B1
EP3722245B1 EP20165364.9A EP20165364A EP3722245B1 EP 3722245 B1 EP3722245 B1 EP 3722245B1 EP 20165364 A EP20165364 A EP 20165364A EP 3722245 B1 EP3722245 B1 EP 3722245B1
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EP
European Patent Office
Prior art keywords
tension
configuration
main
transfer
displacement
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.)
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Application number
EP20165364.9A
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German (de)
English (en)
French (fr)
Other versions
EP3722245A1 (fr
Inventor
Jonathan CHALAVON
Patrick Combaret
Adrien Dagniaux
Thibaud Lauretti
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
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Manitowoc Crane Group France SAS
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Publication of EP3722245A1 publication Critical patent/EP3722245A1/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
    • B66C11/00—Trolleys or crabs, e.g. operating above runways
    • B66C11/16—Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear
    • 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
    • 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
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/10—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for preventing cable slack
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
    • 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
    • B66D1/42—Control devices non-automatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/32—Detent devices
    • 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
    • B66C2700/018—Construction details related to the trolley movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0108—Winches, capstans or pivots with devices for paying out or automatically tightening the cable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/05—Brakes with mechanisms with latches for hoists or similar devices

Definitions

  • the invention relates to a tension adjustment system for remote adjustment of a tension in a distributor cable providing movement of a distributor cart movable along a distributor boom of a crane.
  • a tension adjustment system comprising a distribution winch equipped with a distribution motor and cooperating with the distribution cable to ensure movement of the distribution trolley, and a mechanical adjustment device. mounted on the distributor trolley and coupled to the distributor cable to provide an adjustment of the tension of the distributor cable, where this mechanical adjustment device comprises a main drum rotatably mounted on the distributor trolley and around which the distributor cable is partially wound so that, on the one hand, a rotation of the main drum in the first direction leads to unwinding of the distributor cable resulting in a release of the tension in the distributor cable and that, on the other hand, a rotation of the main drum in the second direction, opposite to the first direction, causes a winding of the distributor cable resulting in an increase in the tension in the cable th distributor.
  • a locking system provided with a toothed wheel integral in rotation with the drum and a pawl mounted to pivot and capable of locking in the notches of the toothed wheel to prevent the rotation of the main drum in the first direction. , while allowing the rotation of the main drum in the second direction.
  • the distributor cable generally has a great length, which can exceed one hundred meters depending on the length of the boom, which helps the distributor cable to stretch during the time of its use, so that it is essential to retension this distributor cable. regularly. Usually, it is necessary to re-tension the distribution cable about two to three times during the first month of use of the crane, and then about once every quarter thereafter.
  • This tensioning of the distributor cable is in fact necessary to ensure proper operation of the translation of the distributor trolley which does not accept having a relaxed distributor cable, because a cable slack safety system would come into action and block the trolley in safety position in accordance with classical safety requirements, and in particular with the indications of European standard EN 14439 on "suspended load lifting devices - safety - tower cranes".
  • This tensioning of the distributor cable is also necessary to guarantee responsive operation of the translation of the distributor trolley and precise positioning of the distributor trolley on the boom. In fact, at each movement impulse, the distributor trolley reacts faster when the distributor cable is sufficiently tight because there will be little or no slack in the cable to recover.
  • this tensioning operation (or retensioning operation) consists in rotating the main drum of the mechanical adjustment device in the second direction of rotation, the pawl of the locking system then moving from notch to notch in the ferret to tension measurement.
  • a specific operating key manipulated by an operator placed on the boom.
  • Such an operating key is generally long enough, for example between 70 and 120 centimeters, so that the operator can exert a sufficient force to retension the distribution cable.
  • This operation of tensioning the distribution cable constitutes a dangerous maneuver to be carried out at height on the jib of the crane and adds an additional cost of operating the crane.
  • this relaxation operation consists in rotating the main drum of the mechanical adjustment device according to the first direction of rotation, after having disengaged the pawl from the toothed wheel.
  • this relaxation operation it is now planned to do it manually using the same operating key, by turning the main drum slightly with this operating key in the second direction of rotation to release the pawl from its sound. notch, then by completely disengaging the ratchet either by hand or by means of pliers, while keeping the main drum stationary by holding the operating key, then finally releasing the operating key, without releasing it , to leave the main drum free to rotate in the first direction of rotation under the effect of the intrinsic tension in the distributor cable.
  • This operation of relaxing the distributor cable is also a dangerous maneuver to be carried out in height over the boom of the crane and also adds additional cost of operating the crane.
  • the object of the present invention is to resolve all or part of the aforementioned drawbacks, by proposing a system for adjusting the tension of a distributor cable which allows the distributor cable to be released from a distance, therefore without the need for manual intervention during the operation where forces are involved, thus helping to improve safety during dismantling of the crane.
  • Another object of the invention is to provide a solution which makes it possible to automate the expansion operation, either autonomously or by direct control by the operator of the crane.
  • Another object of the invention is to provide a tension adjustment system which also allows the distribution cable to be tensioned from a distance, therefore again without the need for manual intervention during the operation where forces are in force. Game.
  • Another object of the invention is to control, during a remote tensioning operation, the tension within a predefined tension value interval, in order to guarantee a controlled tension and to avoid free will of an operator.
  • the invention therefore proposes to remotely control the movement of the distributor trolley, and it is this movement which will act on the mechanical adjustment device to cooperate with the distributor cable and provide a release of the tension in the distributor cable, in other words a relaxation.
  • a tension adjustment system when the mechanical adjustment device is in the expansion configuration, allows the distributor cable to be relaxed remotely, possibly in an automated manner, by moving the distributor trolley which acts on it. this mechanical adjustment device.
  • the mechanical adjustment device can also be configured in a tension configuration in which, under the action of a movement of the distributor carriage controlled by the control unit according to a second predefined movement sequence back and forth -Comes between the forward direction and the reverse direction, the mechanical adjustment device provides an increase in the tension in the distributor cable.
  • this embodiment still proposes to remotely control the movement of the distributor trolley, but this time this movement will act on the mechanical adjustment device to cooperate with the distributor cable and provide an increase in the tension in the distributor cable, in other words a setting. in tension.
  • the tension adjustment system when the mechanical adjustment device is in the tension configuration, makes it possible to tension remotely, possibly in an automated manner, the distributor cable by moving the distributor trolley which acts on this device. mechanical adjustment.
  • this tension adjustment system is automated to facilitate the implementation by the crane operator, guarantee the correct maneuvers and their precision, and allow to have a controlled repeatability of the sequences and of the relaxation and retensioning forces put into the machine. distribution cable (s).
  • This embodiment also makes it possible to automatically update the “zero range” of the dispenser trolley which corresponds to the reference position of the dispenser trolley to determine its position along the boom, after retention.
  • control unit comprises an autopilot module configured to automatically implement the first movement sequence once the mechanical adjustment device is in the relaxation configuration in order to automatically implement a release of the tension. in the distributor cable.
  • the trigger operation is done automatically, without human action during the operation, the module autopilot following a dedicated piloting program which can implement several first successive movement sequences to relax increment by increment.
  • the autopilot module is configured to automatically implement the second movement sequence once the mechanical adjuster is in the tension configuration to automatically implement an increase in tension in the distributor cable.
  • the tensioning operation is done automatically, without human action during the operation, the autopilot module following a dedicated piloting program which can implement several second sequences of successive movements to retension increment by increment.
  • the mechanical adjustment device comprises a safety device connected to the control unit and can be manipulated between an operating configuration preventing the first movement sequence and allowing the second movement sequence, and an assembly configuration allowing both the first reciprocating sequence and the second moving sequence.
  • the mechanical adjustment device is secured by an intervention on the safety device to switch from a tensioning operation to an expansion operation and vice versa, the tensioning being preferably accessible to the crane assembler. and to the crane operator (tensioning being necessary when assembling the crane and in operation once mounted), while the trigger is only accessible to the crane assembler (the trigger is only necessary when dismantling the crane. crane).
  • the secondary mechanism comprises a means for adjusting the return force exerted by the rear return means on the secondary lever.
  • Such an adjustment means in fact makes it possible to be able to adjust the return force on the secondary lever, and therefore the pushing force of the secondary lever on the toothed wheel to rotate the main drum in the second direction of rotation (direction of rotation). tensioning).
  • the tension adjustment system in the expansion configuration of the mechanical adjustment device, further comprises a first stop element which is static relative to the distributor carriage and which is shaped to cooperate with the mechanical control device. adjustment under the action of a movement of the distributor carriage according to the first movement sequence.
  • the movement of the dispenser carriage necessarily requires a movement of the mechanical adjustment device which is mounted on the dispenser carriage, so that in the expansion operation and by moving this dispenser carriage according to the first sequence, the mechanical adjustment device will cooperate with the first static stop element to act on the distributor cable and provide the release of tension in the distributor cable.
  • the first stop element has a front stop and a rear stop which extend opposite to surround the secondary guide means.
  • the first stop element has the general shape of an inverted “U”.
  • the first stop element is fixed in a removable manner on the dispensing boom, in particular at the bottom of the boom, in order to be able to mount the first stop element in the detent configuration and to be able to remove the first stop element in the working configuration.
  • the tension adjustment system further comprises a second stop element which is static relative to the distributor carriage and which is shaped to cooperate with the mechanical adjustment device under the action of a movement of the dispensing carriage according to the second movement sequence.
  • the mechanical adjustment device will cooperate with the second static stop element to act on the distributor cable and provide the increase in tension in the cable. distributer.
  • the second stop element has an inclined front face forming a ramp, extended by a longitudinal lower face.
  • the second stop element is fixed in a removable manner on the dispensing boom, in particular at the bottom of the boom, in order to be able to mount said second stop element in the tension configuration and to be able to remove said second stop element in the configuration of work and in the relaxation setup.
  • first stopper element and the second stopper element are mounted at the same location on the dispensing boom respectively in the detent configuration and in the tension configuration.
  • the tension adjustment system further comprises at least one sensor for measuring at least one of the following parameters: tension in the distributor cable, configuration of the mechanical adjustment device, position of the distributor carriage, position of a component. component of the mechanical adjustment device
  • One or more of these sensors will make it possible to secure and make the automation of the expansion operation and / or the tensioning operation more reliable.
  • the invention also relates to a crane provided with a distributor trolley movable along a distributor boom by means of a distributor cable, such a crane comprising a tension adjustment system according to the invention.
  • control by the control unit of the movement of the distributor trolley according to the first movement sequence is implemented automatically by the autopilot module described above.
  • the control by the control unit of the movement of the distributor trolley according to the first movement sequence implements several first successive movement sequences until the tension in the distributor cable goes below a predefined low threshold.
  • the verification of the configuration of the mechanical adjustment device in the expansion configuration is carried out by means of at least one sensor.
  • the control by the control unit of the movement of the distributor carriage according to the second movement sequence is implemented automatically by the autopilot module described above.
  • the control by the control unit of the displacement of the distributor carriage according to the second displacement sequence implements several second successive displacement sequences until the tension in the distributor cable passes above a predefined high threshold.
  • the verification of the configuration of the mechanical adjustment device in the tension configuration is carried out by means of at least one sensor.
  • the figures illustrate a distributor trolley 1 designed to be movable along a distributor jib of a crane, and in particular of a tower crane.
  • This crane thus comprises a distribution jib along which the distributor trolley 1 can be moved, where the distributor jib is mounted on a tower at the foot of the jib.
  • the distributor cart 1 is shaped to distribute a load along the distributor boom.
  • the distributor trolley 1 travels on a track between the foot of the boom and the tip of the boom (or free end of the dispenser boom), and supports at least two wheels 14 provided to roll on the track of the boom distributor.
  • This distributor trolley 1 also supports a lifting member (such as a hook) mounted on a lifting block suspended from the distributor trolley 1 by a lifting cable.
  • the distributor carriage 1 is movable forwards (in other words in the direction of the tip of the arrow), and also backwards (in other words in the direction of the foot of the arrow).
  • the crane comprises a distribution winch (not shown) mounted on the distribution boom, at the foot of the boom, equipped with a distribution motor driving in rotation a distribution drum cooperating with a distribution cable 9 to ensure a movement of the distributor carriage 1 in a forward direction and in a rearward direction.
  • a distribution winch (not shown) mounted on the distribution boom, at the foot of the boom, equipped with a distribution motor driving in rotation a distribution drum cooperating with a distribution cable 9 to ensure a movement of the distributor carriage 1 in a forward direction and in a rearward direction.
  • the crane also includes a control unit (not shown) connected to the distribution motor to remotely control a movement of the distribution trolley in the forward direction and in the rear direction, in particular for control by the crane operator (or crane operator) placed in a cabin located at the foot of the boom.
  • a control unit (not shown) connected to the distribution motor to remotely control a movement of the distribution trolley in the forward direction and in the rear direction, in particular for control by the crane operator (or crane operator) placed in a cabin located at the foot of the boom.
  • the crane also comprises a mechanical adjustment device 2 mounted on the distributor trolley 1 and which can be actuated under the action of a movement of the distributor trolley 1 to allow remote adjustment by the crane driver (or crane operator) of the tension of the distributor cable 9 by movements of the distributor trolley 1 forwards and backwards.
  • a mechanical adjustment device 2 mounted on the distributor trolley 1 and which can be actuated under the action of a movement of the distributor trolley 1 to allow remote adjustment by the crane driver (or crane operator) of the tension of the distributor cable 9 by movements of the distributor trolley 1 forwards and backwards.
  • This mechanical adjustment device 2 associated with the distribution winch and the control unit, together form a tension adjustment system for remote adjustment of the tension in the distribution cable 10.
  • the mechanical adjustment device 2 comprises a main mechanism coupled to the distributor cable 9 and operable in a first direction for a release of the tension in the distributor cable 9 and in a second direction for an increase in the tension in the distributor cable 9.
  • this main mechanism comprises a main drum 20 rotatably mounted about a main axis AP on a frame 11 of the distributor carriage 1 and around which the distributor cable 9 is partially wound.
  • the front strand has a length substantially equivalent to twice the length of the dispensing arrow
  • the rear strand has a length substantially equivalent to the length of the dispensing arrow.
  • the distribution motor turns the distribution drum in a direction of rotation known as the forward direction which corresponds to a winding of the front strand on the distribution drum and to an unwinding of the rear strand. on the distribution drum.
  • the distribution motor rotates the distribution drum in a direction of rotation called the rear direction, opposite to the front direction, which corresponds to an unwinding of the front strand on the distribution drum and to a winding of the rear strand on the distribution drum.
  • main pawl 23 is located at the rear of the main drum 20, and it is in the locked configuration positioned at least partially below. of a main plane PP parallel to the distributor boom and passing through the main axis AP.
  • the secondary mechanism comprises a secondary lever 30 mounted to pivot around the main axis AP and provided with a head 31 projecting from the toothed wheel 21, above the main plane PP.
  • This secondary lever 30 is pivotable independently of the main drum 20 and of the toothed wheel 21.
  • This secondary lever 30 has the general shape of an arch, with two parallel plates 300 extending on either side of the main drum 20 and of the toothed wheel 21, and these plates 300 are joined by a branch which passes below the main drum 20.
  • the free ends of the two plates 300 form the head 31, and between these two plates 300 is fixed a rod 301 forming a physical axis of pivoting parallel to the main axis AP.
  • This secondary mechanism also comprises a rear return means comprising two rear springs 32 (which are not systematically illustrated in the Figures) which are mounted between a rear anchor 12 on the frame 10 and two anchor points 310 provided on the head 31. , and more precisely provided on the respective free ends of the two plates 300. These two rear springs 32 urge the secondary lever 30 in rearward pivoting (pivoting to the left on the Figures 5 , 7 , 12 and 15 ).
  • the two anchor points 310 are offset to the rear compared to the rod 301.
  • a factory setting of the preload of the two rear springs 32 makes it possible firstly to adjust the desired final tension force, and secondly to mechanically detect a lack of tension in the distributor cable 9.
  • the secondary mechanism also comprises a means for adjusting the return force exerted by these two rear springs 32 on the secondary lever 30, such adjustment means comprising a means for adjusting the distance of the rear anchor 12 on the chassis 10, for example by a system of screws, thus making it possible to tension more or less these rear springs 32.
  • This secondary mechanism comprises a secondary guide means comprising a roller 33 rotatably mounted on the head 31, and more precisely mounted rotatably around the rod 301 carried by the head 31 between the free ends of the two plates 300, along an axis parallel to the main axis AP.
  • This secondary mechanism comprises a secondary pawl 34 pivotally mounted on the head 31, and more precisely mounted to rotate around the rod 301 carried by the head 31 between the free ends of the two plates 300, along an axis parallel to the main axis AP.
  • This secondary pawl 34 is arranged next to the roller 33. This secondary pawl 34 is able to come into engagement with the notches 22 of the toothed wheel 21, on top of the toothed wheel 21, to act in rotation on this toothed wheel 21 .
  • This secondary pawl 34 comprises two "L" -shaped plates spaced from one another, which carry between them at a rear end a rod 343 adapted to come into engagement in the notches 22 and also to come into abutment against the secondary cam. 35 described below.
  • This secondary mechanism comprises a secondary cam 35 pivotally mounted on the frame 10 along the transverse axis AT common to the main pawl 23.
  • This secondary cam 35 is therefore located on the rear of the main drum 20.
  • the frame 10 comprises a caliper 13 at the rear of the main drum 20 and provided with two parallel flanges carrying a shaft defining the transverse axis AT and around which are pivotally mounted and side by side, between the two flanges of the caliper 13, the secondary cam 35 and the main pawl 23; the main pawl 23 being positioned opposite the toothed wheel 21.
  • This secondary cam 35 has a cam surface 351 facing forward and upward, facing the secondary pawl 34 which has a width adapted to engage in the toothed wheel 21 and also come to rest on this cam surface 351 of the secondary cam 35. More precisely, it is the rod 343 which will come into engagement in the toothed wheel 21 and also come to bear on this cam surface 351 of the secondary cam 35.
  • This secondary mechanism comprises a cam return spring 36 mounted between the frame 10, and more precisely the caliper 13, and the secondary cam 35, and which urges the secondary cam 35 towards a neutral position (visible on the figures 1 to 8 ), wherein the secondary cam 35 has its cam surface 351 facing forward and up.
  • This secondary mechanism comprises a coupling means between the main pawl 23 and the secondary cam 35, where this coupling means comprises a coupling spring 37 connecting the main pawl 23 and the secondary cam 35.
  • the secondary cam 35 has a arcuate groove 350 in which slides a pin integral with the secondary pawl 23; this pin associated with the arcuate gore 350 can form all or part of the main return means urging the main pawl 23 towards a locking position in the notches 22 of the toothed wheel 21. It is also possible to envisage providing a main return spring to form all or part of this main recall means.
  • This secondary mechanism also comprises a secondary return means formed of a secondary return spring 38 mounted between the secondary lever 30 and the secondary pawl 34, where the secondary lever 30 comprises a single point of attachment 304 for this secondary return spring. 38 while the secondary pawl 34 comprises two separate attachment points for this secondary return spring 38, more precisely a first attachment point 341 provided on its front branch and a second attachment point 342 provided on its rear branch.
  • the mechanical adjustment device 2 is configurable in a working configuration in which no element on the dispensing boom acts on the secondary lever 30, and the secondary return spring 38 is preferably in its second configuration so that the secondary pawl 34 is engaged in a notch 22 of the toothed wheel 21 and the main pawl 23 is in engagement in another notch 22 of the toothed wheel 21.
  • the mechanical adjustment device 2 is frozen regardless of the movement of the distributor trolley 1 and it provides a maintenance of the tension in the distributor cable 9.
  • the distributor trolley 1 is controlled in movement to perform load distribution operations, without interacting with the mechanical adjustment device 2.
  • the mechanical adjustment device 2 can also be configured in a trigger configuration (visible on the Figures 4 to 15 ) in which, under the action of a movement of the distributor carriage 10 controlled by the control unit according to a first predefined movement sequence back and forth between the forward direction and the rear direction, the mechanical adjustment device 2 provides a release of the tension in the distributor cable 9.
  • the secondary mechanism 30, 31, 32, 33, 34, 35, 36, 37, 38 is able to act on the main mechanism 20, 21, 23 to change it from a locked configuration to an unlocked configuration and to allow actuation of the main drum 20 in the first direction for a release of the tension in the distributor cable 9 until it returns to the locked configuration.
  • a first stop element 4 which is static relative to the distributor carriage 10 and which is shaped to cooperate with the mechanical adjustment device 2 under the action of a movement of the carriage. distributor 1 according to the first movement sequence.
  • This first stop element 4 is in the general shape of an inverted “U”, or an inverted fork, and has a front stop 41 and a rear stop 42 which extend opposite to frame the roller 33; where the front stop 41 and the rear stop 42 are curved inwardly at their ends and form the branches facing the "U".
  • This first stop element 4 is fixed in a removable manner, for example by screwing or bolting, on the dispensing boom, at the bottom of the boom, in order to be able to mount this first stop element 4 in the detent configuration and to be able to remove this first stop element 4 in the working configuration.
  • this first displacement sequence can be repeated to increase each time a release of the tension in the distributor cable 9, until a single predefined low tension is reached. It is then advantageous to use one or more sensors to access at least one parameter representative of the voltage in the distributor cable 9 in order to continue or stop the expansion operation depending on the value of this parameter.
  • the mechanical adjustment device 2 can also be configured in a tension configuration (visible on the Figures 16 and 17 ) in which, under the action of a movement of the distributor carriage controlled by the control unit according to a second predefined movement sequence back and forth between the forward direction and the rear direction, the mechanical adjustment device 2 provides an increase in tension in the distributor cable 9.
  • the secondary mechanism 30, 31, 32, 33, 34, 35, 36, 37, 38 is able to actuate the main mechanism 20, 21, 23 and more precisely the main drum 20 in the second direction for an increase in the tension in the distributor cable 9.
  • a second stop element 5 is provided which is static relative to the distributor carriage 10 and which is shaped to cooperate with the mechanical adjustment device 2 under the action of a movement of the carriage. distributor 1 according to the second movement sequence.
  • This second stop element 5 has an inclined front face 51 forming a ramp, extended by a longitudinal lower face 52 extending parallel to the dispensing boom.
  • This second stop element 5 is fixed in a removable manner, for example by screwing or bolting, on the distributor boom, at the foot of the boom, in order to be able to mount this second stop element 5 in the tension configuration and to be able to remove this second stop element 5 in the working configuration.
  • the first stop element 4 and the second stop element 5 are mounted at the same location on the dispensing boom respectively in the detent configuration and in the tension configuration.
  • this second movement sequence can be repeated to increase each time an increase in the tension in the distributor cable 9, until reaching a single predefined high tension. It is then advantageous to use one or more sensors to access at least one parameter representative of the tension in the distributor cable 9 in order to continue or stop the tensioning operation according to the value of this parameter.
  • the tensioning operation comprises a step of setting to zero a reference position of the dispensing carriage when the stop is returned to the start of the stroke following the second movement of the dispensing carriage.
  • the tensioning operation is carried out on the single front strand of the distribution cable 9, which is the one which passes through the arrowhead. Also, once the desired increase in voltage has been reached, it is advantageous to move the distributor trolley 1 forwards (towards the arrowhead) by an average value equal to half the length of the coiled distribution cable 9, then backwards, to distribute the tension between the front strand and the back strand. This movement can be done automatically at the end of the tensioning operation.
  • the tensioning operation makes it possible to automatically reset the “zero range” of the dispenser trolley 1 which corresponds to the reference position of the dispenser trolley to determine its position along the arrow. With the automation of this resetting, the risk of error on this reference position is eliminated and the range indication will always remain accurate and reliable.
  • the tension adjustment system which as a reminder comprises the mechanical adjustment device 2, the distribution winch and the control unit, makes it possible to control remotely (possibly in an automated manner by means of a self-piloting module. ), the movement of the distributor carriage 1, and thus act on the mechanical adjustment device 2, via the first stop element 4 or the second stop element 5 previously fixed on the distributor boom, to provide a release of the tension in the distributor cable 9 or an increase in tension in the distributor cable 9.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
EP20165364.9A 2019-04-08 2020-03-24 Système et procédé de réglage à distance d'une tension dans un câble distributeur de grue Active EP3722245B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1903726A FR3094707B1 (fr) 2019-04-08 2019-04-08 Système et procédé de réglage à distance d’une tension dans un câble distributeur de grue

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EP3722245A1 EP3722245A1 (fr) 2020-10-14
EP3722245B1 true EP3722245B1 (fr) 2021-12-01

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US (1) US11518657B2 (es)
EP (1) EP3722245B1 (es)
CN (1) CN111792551B (es)
ES (1) ES2908073T3 (es)
FR (1) FR3094707B1 (es)

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Publication number Priority date Publication date Assignee Title
CN114104987B (zh) * 2022-01-25 2022-04-22 河南省祥东交通建设工程有限公司 一种桥梁板面铺设用门式起重机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB126680A (en) * 1917-02-09 1919-05-22 Percy Lloyd Hanmer Dodson Improvements in or relating to Winches or Hauling Apparatus for Kites, Observation or Target Balloons and the like.
GB835448A (en) * 1956-12-06 1960-05-18 British Thomson Houston Co Ltd Improvements relating to winding and haulage equipment
JPS4844454B1 (es) * 1968-04-19 1973-12-25
FR2058699A5 (es) * 1969-09-18 1971-05-28 Richier Sa
FR2086711A5 (es) * 1970-04-07 1971-12-31 Aerospatiale
DE2457864C2 (de) * 1974-12-06 1983-10-27 Tax, Hans, 8000 München Laufkatzenkran
FR2398015A1 (fr) * 1977-07-22 1979-02-16 Acme Perfectionnements aux systemes pour le repliage ou le deploiement de la fleche articulee d'une grue a mat telescopique
FR2456700A1 (fr) * 1979-05-16 1980-12-12 Cadillon Dispositif pour tendre automatiquement le cable distributeur du chariot de fleche distributrice d'une grue a tour
US20040013490A1 (en) * 2000-03-21 2004-01-22 Cauchon Denis G. Spring-loaded load restraint winch system
CN101734568B (zh) * 2009-12-16 2012-03-28 三一集团有限公司 断索保护装置及具有该保护装置的起吊设备
DE102013006073A1 (de) * 2013-04-08 2014-10-09 Liebherr-Werk Biberach Gmbh Kran sowie Verfahren zur Prüfung der Verseilung eines solchen Krans
FR3005244B1 (fr) * 2013-05-02 2015-05-08 Driss Abandarat Dispositif de mise sous tension d'une sangle
EP3045419A1 (de) * 2015-01-15 2016-07-20 Siemens Aktiengesellschaft Sicherheitsbremse für ein Hubwerk
FR3049593A1 (fr) * 2016-04-01 2017-10-06 Manitowoc Crane Group France Structure pliable pour composer une grue a tour
FR3067706B1 (fr) * 2017-06-15 2019-07-26 Manitowoc Crane Group France Dispositif et procede de tension automatisee d’un cable distributeur pour grue

Also Published As

Publication number Publication date
ES2908073T3 (es) 2022-04-27
EP3722245A1 (fr) 2020-10-14
FR3094707A1 (fr) 2020-10-09
US20200317476A1 (en) 2020-10-08
FR3094707B1 (fr) 2021-03-05
CN111792551B (zh) 2024-10-01
CN111792551A (zh) 2020-10-20
US11518657B2 (en) 2022-12-06

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