US3533358A - Device for compensating automatically for variations in the tension on and length of cables in appliances for transferring loads between two moving objects by cables - Google Patents

Device for compensating automatically for variations in the tension on and length of cables in appliances for transferring loads between two moving objects by cables Download PDF

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US3533358A
US3533358A US733048A US3533358DA US3533358A US 3533358 A US3533358 A US 3533358A US 733048 A US733048 A US 733048A US 3533358D A US3533358D A US 3533358DA US 3533358 A US3533358 A US 3533358A
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Prior art keywords
cables
cable
load
winch
winches
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Pierre Leuenberger
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CREUSOT FORGES ATELIERS
FORGES ET ATELIERS DU CREUSOT SOC
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CREUSOT FORGES ATELIERS
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Priority claimed from FR108764A external-priority patent/FR1533975A/fr
Priority claimed from FR109804A external-priority patent/FR92580E/fr
Priority claimed from FR113442A external-priority patent/FR93264E/fr
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/18—Arrangement of ship-based loading or unloading equipment for cargo or passengers of cableways, e.g. with breeches-buoys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C7/00—Runways, tracks or trackways for trolleys or cranes
    • 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

Definitions

  • These cable-transfer appliances generally comprise a carrier cable, stretched between two ships, and on which there runs a carriage supporting the load, and a cable governing the outward and return movements of the carriage along the carrier cable.
  • Constant tension is automatically maintained on the carrier cable and on the carriage-governor cables in the compensating device to which the present invention relates.
  • the automatic compensating device comprises winders disposed on the moving object carrying the cable-winches and each assigned to compensating for variations in the length of one of the cables, the winders being interconnected and subjected to the action of a common return force of constant value in the direction of applying tension to the cables.
  • FIG. 1 is a diagram showing the principle of an appliance for carrying out transfers between two moving objects by cables;
  • FIGS. 2, 3 and 4 are diagrammatic views showing a device for carrying out compensation by running the cables through pulley-blocks, as applied respectively to each of the two opposite directions of transfer and to the general case of transfers in both directions;
  • FIGS. 5 and 6 are diagrammatic views showing two variants in the application of the constant tensioning force to the cables in a device for carrying out compensation by running the cables through pulley-blocks;
  • FIGS. 7, 8 and 9 are diagrammatic views showing a device for carrying out compensation by mechanically interconnecting the winches, as applied respectively to each of the two opposite directions of transfer and to the general case of transfers in both directions;
  • FIGS. 10 and 11 are principle diagrams similar to those of FIG. I, and showing the variations in sag and tension on the cables in the course of a transfer;
  • FIG. 12 is an overall diagrammatic view, showing a method of interconnecting the winches of the operating cables, and auxiliary tensioners for taking up variations in the length of these cables as a function of the variations in sag of the three cables,
  • FIGS. 13 and I4 are partial views extracted from FIG. 12, and showing two variants in the interconnection of the winches of the operating cables;
  • FIG. 15 is a principle diagram similar to that of FIG. I;
  • FIG. 16 is a diagrammatic view showing a repeater for the positions and movements of-the load
  • FIG. 17 is a diagrammatic view showing how the positions and movements of the load are posted in the repeater illustrated in FIG. 16;
  • FIG. 18 is an overall diagrammatic view showing a variant of embodiment of the interconnection of the winches by dif- FIGS. 19 and 20 are a principle diagram and an overall diagrammatic view respectively of a variant of embodiment according to which the carrier cable takes the form of one of the operating cables.
  • FIG. 1 shows an appliance for carrying out transfers between two arrival stations A and B fitted up respectively on two ships spaced from one another by a distance E which may be variable, the said ships being liable to oscillate about two roll axes a and b, themselves moving in space.
  • a carrier cable C constitutes the running track of a carriage 1 from which a load P is suspended.
  • the cable C which is secured at 2 to the station B, is linked to a winder D, in the station A.
  • the carriage I is attached at 3 to two opposed operating cables C and C,, which are respectively linked to two winders D and D in the station A, the cable C, passing over two deflector pulleys 4 in the station B.
  • the movements and positions of the carriage l, and consequently of the load P depend at each instant on the relative movements between the stations A and B and on the tension on the cables C,, C C determined by the winders D,, D D;,.
  • the three cables C C, and C,, which pass over deflector pulleys 5 and tensioning pulleys6 mounted on a yoke 7 from which a common weight Mis suspended, are attached to three winches T,, T and T respectively.
  • the two groups of pulleys 5 and 6 are illustrated as having separate spindles, but it goes without saying that in each group the pulleys may be mounted on a common spindle.
  • the three pulley-blocks give a constant sum of the tensions on the three cables, the sum of the tensions being equal to M/2.
  • Pulley-blocks with a plurality of runs of cable may be provided, for example for the operating cables C and C,,, in order to obtain a constant greater tension on the carrier cable C,, the sum of the tensions remaining constant.
  • the speed at which the carriage I arrives at the station B is easily controllable. If it is assumed that the winches T,, T and T are stationary, the carriage 1 follows the movements of the station B, since the variation in the length of the cables is compensated for by thepulley-blocks in the station A. Under these conditions, if the winch T is caused to wind at a speed equal to the unwinding speed of the winch T,, for example by means of a mechanical coupling between these two winches, this speed which is easily adjustable, constitutesthe speed of arrival at the post B, whatever the direction and amplitude of relative movements between the two stations.
  • the cable C is directly attached to a winch U,,; the cable C, is attached to a winch U, after passing over a pulley-block pulley 6, while the cable C, which is attached to a winch U,,, undergoes double blocking by passing over its pulley8, linked to the weight M, and over a fixed pulley 9, the sum of the tensions on the three cables being substantially constant.
  • the speed at which the carriage l arrives at the'station A is likewise ,easily controllable.
  • the carriage 1 follows the movements of the station A; for any variation in the distance between the two stations the distances traversed by the cable C, will be twice as great as those traversed by the cable C the length of the cable C being constant. Consequently, if the winch U is caused to wind at a speed equal to the unwinding speed of the winch U the speed of arrival at the station A will be controlled, and will be that at which the cable C, is wound.
  • FIG. 4 applies to the more general case of bringing in and launching the carriage on its own or loaded, at both of the two stations.
  • the station A comprises a pulley-block for the cables C,, C C according to FIG. 2, made up of pulleys 6 and a weight M,, and a pulley-block for the cables C, and C according to FIG. 3, made up of the pulleys 8, 9 and a weight M the cables C, and C being guided between the two pulleyblocks by the deflector pulleys l and 11.
  • the two weights M, and M are provided with brakes for locking to the respective guides m and m braking being carried out, for example, by means of remote control by electromagnets, not illustrated.
  • Transfer of the load from the station A to the station B will proceed in the following manner:
  • the weight M At the start of launching the weight M, will be locked by its brake, the weight M, being free. Unwinding the cable C, by the winch U and winding up the cable C by the winch U, will launch the load at the unwinding speed of the cable C In order to bring the load up to the station B, the weight M, will be released and the weight M, will be locked before the load approaches the station B. Controlling the speeds of the winches U, and U determines the speed at which the load arrives at the station B.
  • the pulley-blocks for the three cables in the station A may be of the type comprising multiple runs of cable, so as to limit the movements of the weightsM, and M and to make the sums of the tensions on the cables different while these weights are of the same value.
  • the return members M may be inserted either between the pulley-block yokes 7 and a fixed point 13 (FIG. and work in tension, or between the pulley-block yokes 7 and a fixed yoke 7a supporting the fixed pulley-block pulleys 6a (FIG. 6), and work in compression.
  • FIG. 7 there is a limitation to controlling the load in its arrival and launching at the station B (FIG. 1).
  • the cable C is attached to a winch t, driven by a reversible constant-torque motor F,; the cables C and C are attached to two winches t and 2;, respectively, each linked to one of the planetary gears q, of a differential Q whereof the other planetary gear q is linked by a pinion q, to a pinion q, fast with the shaft of the winch t,.
  • the cages q of the two differentials are linked respectively by gears e and e, to the motors F and F
  • the ratios between the diameter of the winch t1 and the diameters of the winches t r, on the one hand, and between the diameter of the pinion q and the pinions q, on the other hand, are made such that when the motors F and F are stationary the winding and unwinding speeds of the cables C,, C, and C are equal. 1
  • the relative speed of the load upon arriving at the station B is easily controllable.
  • the motors F and F being stationary, they lock the cages q of both differentials Q.
  • the three cables are allowed to wind and unwind as a result of relative movements between the two stations, and the load follows the movements of the station B.
  • the motors F and F being linked to one another by a mechanical or other coupling, not illustrated, the cable C is caused to unwind at a speed equal to the winding speed of the cable C this speed being the desired speed of arrival or launching at the station B.
  • FIG. 8 there is a limitation to controlling arrival and launching at the station A (FIG. 1).
  • the cable C is attached to the winch u which is directly driven via the gears e by the motor F
  • the cable C is attached to the winch 14 which is linked via the differential Q to the motor F by the gears 6 and to the pinion (1;, in mesh with the pinion q fast with the shaft of the winch u,.
  • the ratio between the pinions q, and q, is chosen sothat when the motors F and F, are stationary the winding and unwinding speed of the cable C will be twice as great as the winding and unwinding speed of the cable C,.
  • the load follows the movements of the station A; the speed of winding the cable C and unwinding the cable C by the two motors F and F coupled to one another will be the speed of arrival or launching at the station A.
  • FIG. 9 applies to the general case of arrivals and launchings at both stations by means of a particular combination of the devices comprising winches and differentials according to FIGS. 7 and 8.
  • the winch u for winding the cable C, is linked by the pinion q,, and the two pinions q to the differential Q of the winch a and to the differential Q of the winch u
  • the shaft of the planetary gear q of the differential O is furthermore equipped with a locking brake f while the shaft of the planetary gear q of the differential Q carries a pinion q in mesh with a pinion q, keyed to a shaft q which is linked by way of a clutch p, to the shaft of the winch 11.
  • the ratio between the pinions g and q is half the ratio between the pinions q and q,,.
  • winders comprising mechanical differentials according to FIG. 7, 8 and 9 has the advantage of allowing for continuous variations, of any desired value, in the distance between the two moving objects while an operation of transferring a load from one moving object to the other is in progress.
  • the devices for compensating for variations in the lengths of cables comprising pulleyblocks for the cables or comprising differentials, may be completed in accordance with the invention by auxiliary members for compensating for variations in the lengths of and tensions on the operating cables due to the variable sag of the carrier cable under the action of the load being transferred.
  • FIGS. 10 and 11 are views extracted from FIG. 1, showing respectively the load P in the vicinity of the station A and in the middle of the span between A and B.
  • the loop closed by the operating cables C and C will be larger in the case of FIG. 11 than in the case of FIG. 10.
  • the cable C retards the descent, and the tension on the cable C must be sufficient to limit the free sag of this cable.
  • the cable C becomes the driving cable, and the tension on the cable C must be sufficient to limit its sag.
  • the tensions on the cables C and C may naturally reverse their directions as from any other position on the span, from the bottom point of the load, as a function of the differences in level between the two moving objects.
  • FIGS. I2, 13 and 14 ensures that minimum tensions are maintained on the operating cables C and C not tensioned by the load.
  • the members for compensating for cable-lengths have not been illustrated in detail for the sake of clarity in the drawing, and are designated As FIG. 12 shows, the two winches U and U for winding and unwinding the cables C, and C driven by two motors F and F are linked to one another by a reversing gear N; on the shaft of the winch U (or of the winch U there is a clutch S enabling the two winches to be disengaged.
  • the cables C and C are equipped with auxiliary tensioners H and H, of any type, calibrated to the desired minimum value of tension on these cables when they are not tensioned by the load.
  • Displacements of the tensioners H H are limited by upper safety abutments h,, h; and lower safety abutments b b
  • the two winches can operate separately, which facilitates placing the cables C and C, in position during preparation for a transfer operation.
  • the clutch 8 being engaged, and power being supplied to the two motors F F in parallel, the winding and unwinding speeds of the two cables are the same.
  • the cable C becomes the driving cable.
  • the tension on the cable G exceeds the value imposed by the tensioner H,,, which comes into contact with its upper abutment h while the tensioner I-I of the cable C drops towards its lower abutment b and maintains the minimum tension provided for on this cable.
  • FIG. 13 is a partial view extracted from FIG. I2, showing a first variant of embodiment of the link between the two winches U, and U Besides the clutch S on one of the shafts of the winches U and U there are clutches S and S, on the shafts linking these winches to their motors F and F,,.
  • This arrangement is more particularly applicable in the case in which it is difficult to put the two motors in parallel,
  • FIG. 14 is likewise a partial view extracted from FIG, 12, showing a second variant of embodiment of the link between the two winches U and U
  • the two winches, driven by the motors F, and F are linked to the planetary gears g, and g, of a differential C whereof the cage S, is equipped with a locking brake g,.
  • the brake g is released or applied, the two winches can operate independently or, if the two motors are coupled in parallel, the said winches can unwind and wind the two cables simultaneously.
  • This arrangement can exhibit the advantage with respect to arrangements using clutches that the combination of movements is controlled with respect to a fixed element belonging to the brake.
  • FIGS. l2, l3 and 14 may be used in compensating for variations in length of the cables by differentials according to H057, 8 and 9, the auxiliary tensioners H and H, for the cables C, and C, being disposed where the cables enter the unit K containing the members for compensating for cablelengths at the station A; the declutchable reversing mechanism is then inserted between the two motors F 2 and F
  • FIGS. l5, l6 and 17 relate to a repeater for the positions and movements of the load between the two moving objects.
  • the appliance for carrying out transfers between two moving objects A and B shown diagrammatically in FIG. 15 comprises a carrier cable C, on which there moves a carriage l supporting a load P, and two operating cables C C attached in opposition at 3 to the carriage 1.
  • the governor station for the winches on the moving object A comprises, as described above, a device (K) for compensating for variations in length of the three cables due to relative movements of the two moving objects, a device (N) for interconnecting the two winches U U of the operating cables C C and a device H for compensating for sag in the cables.
  • the carrier cable C is secured at 2, and the operating cable C, is guided over two pulleys 4.
  • the number of revolutions carried out by the winch U, in order to secure the cable to the moving object B gives an indication of the instantaneous distance E, between the two moving objects; likewise, the number of revolutions carried out by the winch U while the carriage 1 is moving towards the moving object B gives an indication of the instantaneous distance E between the station A and the load P.
  • the distance is the image of the distance to be traversed by the load until it arrives at the moving object B.
  • the distance E, and consequently the distance E,E being variable as a function of the relative movements of the two moving objects, it is necessary to know the instantaneous distance E,E for the purpose of accurate and possibly automatic control of the speeds of arrival at the moving object B,
  • FIG. 16 shows one particular form of embodiment of a repeater according to the invention, enabling an indication to be given at any instant of the true distance to be traversed by the load before it arrives at one or other of the two moving objects.
  • the repeater illustrated is applicable to the case of compensation for variations in the lengths of the cables by means of a link via differentials between the winch of the carrier cable and the two winches of the operating cables (FIG. 9).
  • the diameter of the winch U is twice that of the winch U
  • the shaft of the winch U is linked via a reversible reduction gear L, to the planetary gear v, of a differential V whereof the planetary gear v is linked via a train of reduction gears L to the shaft of the winch U
  • the cage of the differential V carries a posting disc R, cooperating with a fixed pointer r,.
  • a posting disc R cooperating with a fixed pointer r, is centered on the shaft of the planetary gear v so as to be capable of rotating on this shaft.
  • This disc is driven via gearing L,, at half the speed of the planetary gear v
  • the reduction ratios in the gearings L,, L and L, are so chosen that the angular movements of the discs R, and R are equal for the same lengths of winding and unwinding the cables C, and C,.
  • a clutch P enables the winch U, to be disengaged from the winch U, for the purpose of preparing for a transfer operation.
  • the discs R, and R bear scales in distances whereof the zeros are opposite to the pointers r, and r when the cables are fully withdrawn by the winches U, and U that is to say before preparing for a transfer.
  • the carrier cable C is unwound, and the pointer r, indicates on the disc R, the length E, unwound, and also any variations which there may be in this length, the zero of the scale on this disc being at 0,.
  • the zero of the scale on the disc R has remained opposite to the pointer r
  • the disc R is driven in the reverse direction by the winch U the load is arriving at the moving object B when the zero on the disc R, has returned opposite to the pointer r, stoppage of the operation having been kept under control by observation of the decreasing angular displacement between the zero of the scale and the pointer r,.
  • the disc R has rotated through the same angle and in the same direction as the disc R, and the pointer r indicates the instantaneous distance E, on the scale on the disc R whereof the zero is then at O
  • displacement of the load is controlled while observing zero on the disc R returning towards the pointer r arrival corresponds to zero on this disc coming opposite to the pointer r,; the pointer r, again indicates the instantaneous distance E, on the disc R,.
  • This method of posting is independent of the amplitude and duration of variations in the distance E, since every variation reacts instantaneously on the angular displacement of zero on the disc R, for transfers of the load to the moving object B, and on the angular displacement of zero on the disc R, for transfers in the opposite direction.
  • the repeater furthermore makes it possible to fix the start of deceleration of the load before it arrives at the two moving objects.
  • fixed or adjustable markers such as k, and k are arranged on the disc R, and R so as to be at definite angles such as a, and a,, which may or may not be equal, to the zeros of the scales on these discs.
  • the repeater described above is applicable to a transfer device wherein compensation for variations in length of the cables is provided by pulley-blocks on the cables.
  • the positions of the pointers r, and r may then be adjusted in order to bring them opposite to the zeros of the scales on the two discs.
  • the relative angular movements of the cage v, of the differential V and the angular movements of the disc R may be transformed, for example by means of toothed racks, into rectilinear movements of the two scales with respect to the reading pointers.
  • these two discs may take the form of cams cooperating with angular-position detectors such as d, and d of any type transmitting instruction pulses to a regulator R which groups the manual or automatic control members for the successive operations of launching, transfer and arrival.
  • FIG. 18 relates to a variant of embodiment making it possible to simplify the operations intended to make the appliance work under the conditions required for the operations of arrival at the two moving objects.
  • the winch u is linked to the satellite-carrier cage w, of a differential W by gearing w, whereof the step-up ratio is equal to the ratio between the diameter of the winch u, and the equal diameters of the winches 14,, u,,.
  • the planetary gear w of this differential is linked on the one hand via a shaft w, to the planetary gear q: of the differential Q and on the other hand by way of a clutch P to a shaft W5 linking the planetary gear W6 of the differential W to the planetary gear qof the differential 0 this shaft being equipped with a locking brake 1",.
  • On the shaft w there is a clutch w enabling the differentials W and Q to be disengaged from one another.
  • the brake F In order to place the carrier cable C, in position between the two moving objects, the brake F is locked and the clutch w, is disengaged in order to enable the cage w of the differential W,, and consequently the winch u, of the carrier cable, to rotate freely.
  • the winches u, and u may be used separately in order to place the operating cables C and C in position and under tension.
  • the clutch I In order to bring the load up to the opposite moving object, the clutch I is engaged and the brake f, is released; the planetary gears w and w of the differential W then being fast with one another, the shafts w and w, are driven in the same direction by any rotation which the cage w of the differential W may carry out, and play in the differentials Q and 0,, allows the load to follow relative displacements of this moving object.
  • the speed of arrival will therefore be that regulated by the winches u and u,,. The same will apply to launching the load from this moving object.
  • the working conditions of the clutch p and the brake f for arrivals and launchings at both moving objects may be reversed with the load substantially half-way in both directions, without for that reason interrupting displacement of the load by the winches u, and u
  • This reversal may be carried out automatically by means subject to control for example by the winches u, and u
  • the arrangement described above thus enables loads to be brought up to each of the two moving objects simply by combined operation of the brake f and the clutch p independently of variations in the length of and tension on the cables in the course of an operation.
  • FIGS. 19 and 20 relate to a variant of embodiment for a transfer appliance comprising two cables.
  • the diagram in FIG. 19 shows the two winches u u of the two operating cables C and C attached in opposition at 3 to the load-carrier carriage l which runs on the cable C
  • the two winches u and u; are carried by the moving object A, and the moving object B carries the deflector pulleys w for the cable C
  • the winch u is linked to the planetary gear q, of a differential Q whereof the cage q is driven by a motor F by way of gearing L and a nonreversible worm mechanism l
  • the winch u is linked to the planetary gear q, of a differential Q whereof cage (1 is driven by a motor F by way of gearing L1; and a nonreversible worm mechanism i
  • the planetary gears q of the differentials Q and Q are linked by shafts W and W respectively to the planetary gears w and w of a differential W whereof the cage is linked by gearing w to a torque-motor F,.
  • the shaft w is equipped with a brake f and a clutch p which enables it to be made fast with the shaft w,, itself equipped with a clutch w
  • the clutch w is disengaged and the brake f is applied; as a result of play in the differential the winch u which is then free, allows the cable C to unwind.
  • the two winches u, and u are driven via the differentials Q and 0 by the motors F and F interconnected by the clutch 5 the distance between the load and the moving object A remains that governed by the winches, whatever the variation in distance between the two moving objects.
  • the brake f Before operations of arrival at the moving object 8, the brake f is released and the clutch 1:2 is engaged. The tensioning torque is then distributed to the two winches a and u by the differential W, and variations in the distance between the two moving objects have the effect of causing the two cables C and C to be simultaneously wound up and unwound to the same extent; the distance between the load and the moving object B remains that governed by the two winches. The same applies to operations of launching the load from the station B.
  • said outhaul and said inhaul cables controlling the movements of said trolley respectively between said receiving and said sending ships, a winch for each of said cables, a motor for each of said winches for rotating the respective one of said winches in both directions, said winches for said inhaul and said outhaul cables being rotated in opposite directions and at equal speeds for control of the movement of the load and means for compensating for the length and tension on said cables, said winches, said motors, and said compensating means being mounted on said sending ship, said compensating means including a first mechanical control device for control of the position of said trolley with respect to said receiving ship controlling the winding in and the paying out of said carrier cable and of said inhaul and of said outhaul cables to lengths substantially equal to the changes of the distance between said stations, a second mechanical control device for control of the position of said trolley with respect to said sending ship controlling the winding in and the paying out of said carrier cable to a length substantially equal to the variations of the distance between said stations and to a double length of said outhaul cable,
  • control devices including a pulley for and receiving each of said cables and a constant cable-tension load on said pulleys,
  • control devices including two'differentials coupling said winch for said carrier cable to said winches for said operating cables, said differentials applying to each of said winches for said operating cables a definite fraction of a constant torque for tensioning said cables, said constant torque being applied to said carrier cable winch by a reversible torque motor.
  • winches for said operating cables being interconnected by a reversing mechanism declutchable for individual movements of each of said operating cables.
  • said winches of said operating cables being each coupled to a differential, a satellite carrier cage for each of said differentials driven by the motor of the respective one of said winches, said differentials being coupled to a third differential, a satellite-carrier cage for said third differential coupled to said winch of said carrier cable, planetary gears for said first named differentials connected by a clutch, a locking brake for said planetary gear of said differential of said winch for said operating cable which moves the load toward said sending ship, said clutch and said brake being interconnected for selective operation at arrival of the load.
  • said two differentials being connected to said third differential and a torque motor connected to said third differential applying a torque for tensioning said cables.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
US733048A 1967-06-01 1968-05-29 Device for compensating automatically for variations in the tension on and length of cables in appliances for transferring loads between two moving objects by cables Expired - Lifetime US3533358A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR108764A FR1533975A (fr) 1967-06-01 1967-06-01 Dispositif automatique de compensation des variations de tension et de longueur des câbles dans les appareils de transbordement de charges par câbles entre deux mobiles
FR109804A FR92580E (fr) 1967-06-01 1967-06-09 Dispositif automatique de compensation des variations de tension et de longueur des câbles dans les appareils de transbordement de charges par câbles entre deux mobiles
FR113442A FR93264E (fr) 1967-06-01 1967-07-06 Dispositif automatique de compensation des variations de tension et de longueur de cables dans les appareils de transbordement de charges par cables entre deux mobiles.
FR131313A FR94512E (fr) 1967-06-01 1967-12-07 Dispositif automatique de compensation des variations de tension et de longueur des cables dans les appareils de transbordement de charges par cables entre deux mobiles.

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US (1) US3533358A (fr)
DE (1) DE1756485A1 (fr)
FR (1) FR94512E (fr)
GB (1) GB1199228A (fr)
SE (1) SE349993B (fr)

Cited By (9)

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Publication number Priority date Publication date Assignee Title
US3787031A (en) * 1971-12-08 1974-01-22 Garrett Corp Cable drum highline system
US4662586A (en) * 1983-05-10 1987-05-05 Blohm + Voss Ag Apparatus for moving aircraft
AT402917B (de) * 1990-02-13 1997-09-25 Josef Werlberger Antriebs- und spanneinrichtung für ein oder mehrere mit oder ohne umlenkung geführte seile
US20050017228A1 (en) * 2003-07-22 2005-01-27 Werner Peter Harold Winch control method and apparatus
US20070000881A1 (en) * 2003-02-12 2007-01-04 Peter Ziger Plasma processing installation, influenced by a magnetic field, for processing a continuous material or a workpiece
US9850112B2 (en) * 2013-04-17 2017-12-26 Parkburn Precision Handling Systems Limited Load bearing apparatus and method
CN107879264A (zh) * 2017-11-25 2018-04-06 华强方特（芜湖）文化科技有限公司 一种娱乐用双卷筒式车辆牵引系统
US10526160B2 (en) * 2015-05-29 2020-01-07 Nv Bekaert Sa Winding of multiple elongated elements
US10647539B2 (en) * 2015-02-09 2020-05-12 Nv Bekaert Sa Tension buffer system for multi-wire pay-off system

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CN110745724B (zh) * 2019-11-07 2020-11-24 浙江润华机电有限公司 一种电动绞盘
CN118790402B (zh) * 2024-09-11 2025-01-21 烟台市北海海洋工程技术有限公司 一种饱和潜水钟用主动升沉补偿系统

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787031A (en) * 1971-12-08 1974-01-22 Garrett Corp Cable drum highline system
US4662586A (en) * 1983-05-10 1987-05-05 Blohm + Voss Ag Apparatus for moving aircraft
AT402917B (de) * 1990-02-13 1997-09-25 Josef Werlberger Antriebs- und spanneinrichtung für ein oder mehrere mit oder ohne umlenkung geführte seile
US20070000881A1 (en) * 2003-02-12 2007-01-04 Peter Ziger Plasma processing installation, influenced by a magnetic field, for processing a continuous material or a workpiece
US7884302B2 (en) * 2003-02-12 2011-02-08 Peter Ziger Plasma processing installation, influenced by a magnetic field, for processing a continuous material or a workpiece
US20050017228A1 (en) * 2003-07-22 2005-01-27 Werner Peter Harold Winch control method and apparatus
US9850112B2 (en) * 2013-04-17 2017-12-26 Parkburn Precision Handling Systems Limited Load bearing apparatus and method
US10647539B2 (en) * 2015-02-09 2020-05-12 Nv Bekaert Sa Tension buffer system for multi-wire pay-off system
US10526160B2 (en) * 2015-05-29 2020-01-07 Nv Bekaert Sa Winding of multiple elongated elements
CN107879264A (zh) * 2017-11-25 2018-04-06 华强方特（芜湖）文化科技有限公司 一种娱乐用双卷筒式车辆牵引系统
CN107879264B (zh) * 2017-11-25 2023-06-23 华强方特（芜湖）文化科技有限公司 一种娱乐用双卷筒式车辆牵引系统

Also Published As

Publication number Publication date
SE349993B (fr) 1972-10-16
GB1199228A (en) 1970-07-15
DE1756485A1 (de) 1970-04-02
FR94512E (fr) 1969-08-29

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