WO2022129577A1 - Treuil equipe d'un limiteur de couple variable - Google Patents
Treuil equipe d'un limiteur de couple variable Download PDFInfo
- Publication number
- WO2022129577A1 WO2022129577A1 PCT/EP2021/086601 EP2021086601W WO2022129577A1 WO 2022129577 A1 WO2022129577 A1 WO 2022129577A1 EP 2021086601 W EP2021086601 W EP 2021086601W WO 2022129577 A1 WO2022129577 A1 WO 2022129577A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drum
- rotation
- brake
- plate
- cable
- Prior art date
Links
- 230000003247 decreasing effect Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 43
- 230000006835 compression Effects 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 21
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
-
- 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
- B66D1/54—Safety gear
- B66D1/58—Safety gear responsive to excess of load
-
- 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
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- 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
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
-
- 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
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
- F16D43/213—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces
- F16D43/215—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs
- F16D43/216—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs with multiple lamellae
Definitions
- a winch generally comprises a drum around which a cable is wound supporting a load. Excessive effort applied to the cable can damage the winch and in particular the cable, the drum or its motorization.
- the invention relates to safety related to abnormal forces that may be exerted on the cable of a winch.
- towing winches used in particular on board ships or helicopters to launch various objects such as, for example, sonar antennas, seismic sensors, etc.
- variations in the force on the cable can be very violent and very sudden. These variations may be due, for example, to the navigation conditions of the vessel, or to the attachment of the towed object to a reef.
- the invention aims to propose a solution making it possible to ensure a sliding of the cable for a force varying little even when the cable can be wound on the drum with a large number of layers.
- the invention relates to a winch comprising a frame, a drum which can rotate relative to the frame around an axis of rotation, a cable which can be wound on the drum over several layers, a brake rotation of the drum, the brake being calibrated to allow rotation of the drum beyond a decreasing variable torque with an increase in the length of cable wound on the drum and a mechanism for adjusting the torque exerted by the brake comprising a system screw-nut whose nut is driven in rotation with the drum, and of which a translation of the screw driven by the nut is configured to adjust the torque exerted by the brake.
- the brake comprises at least a first plate movable in translation relative to the frame along the axis of rotation of the drum and immobilized in rotation relative to the frame around the axis of rotation of the drum , at least one second plate immobilized in rotation relative to the drum around the axis of rotation of the drum, a compression element arranged to compress the first plate against the second plate along the axis of rotation of the drum, the adjustment mechanism being configured to adjust the compression of the compression element according to the rotation of the drum.
- the compression element can be a first elastic element exerting a force proportional to its length along the axis of rotation of the drum.
- the winch may include a brake operating mechanism between two positions, a first position allowing free rotation of the drum and a second position in which the brake opposes the rotation of the drum to the variable torque.
- the winch may comprise a motor making it possible to rotate the drum, and a control module authorizing the rotation of the motor in the first position of the brake operating mechanism and prohibiting the rotation of the motor in the second position of the operating mechanism. of the brake.
- the brake operating mechanism is advantageously configured to deactivate the adjustment mechanism in the first position of the brake.
- the brake operating mechanism may comprise a third plate disposed between the first elastic element and the first plate, the third plate being movable in translation along the drum axis, and in which the brake operating mechanism is configured to compress the first element elastic by moving it away from the first plate in its first position and to leave the third plate free in its second position.
- the brake operating mechanism may comprise a second elastic element arranged between the first plate and the third plate.
- FIG. preferred embodiment of a winch according to the invention
- FIG. 1 schematically shows an example of winch 10 according to the invention.
- the winch 10 comprises a drum 12 and a cable 14 which can be wound on the drum 12.
- the cable 14 can be wound on several layers around the drum 12. In FIG. 20, called the winding layer, are shown. The more cable 14 is wound, the more the number of layers increases.
- the drum 12 is rotatable around an axis 22. The rotation of the drum 12 makes it possible to wind and unwind the cable 14 depending on the direction of rotation.
- the rotation can be motorized by means of a motor 24, for example placed inside the drum 12.
- the winch 10 comprises a brake 26 for the rotation of the drum 12.
- the brake 26 comprises surfaces coming into contact with one another to provide braking.
- a first type of surface is immobilized in rotation with respect to a frame 28 of the winch 10 and a second type of surface is immobilized in rotation with respect to the drum 12.
- immobilization in rotation one understands: suppression of a degree of freedom in rotation around the axis 22.
- a complete connection allows immobilization in rotation.
- other degrees of freedom may remain, in particular to allow the positioning of the two types of surfaces in relation to each other, avoiding chains of dimensions that are too tight. The two types of surfaces can rub against each other until the drum 12 stops.
- the brake 26 can also be used to slow down the rotation of the drum 12 by transforming the kinetic energy of the drum 12 into thermal energy by friction of the two surfaces.
- other types of brakes can be implemented within the scope of the invention, for example by transforming the kinetic energy of the drum 12 into another energy, for example electric or pneumatic.
- the brake 26 is calibrated to allow rotation of the drum 12 beyond an increasing variable torque with an increase in length of cable 14 wound on the drum 12.
- the tensile force on cable 14 is equal to the resistive torque keeping drum 12 stationary divided by the radius of the winding layer, layer 20 on Figure 1. If it is desired to avoid damage or even breakage of the cable 14, it is important to limit the tensile force on the cable. To do this, a maximum effort is defined beyond which the cable must be able to “spin”. In other words, beyond the maximum effort, the drum 12 starts rotating under the traction of the cable 14 to allow the cable 14 to unwind and thus avoid exceeding the maximum authorized traction effort. Due to the variable number of turns wound on drum 12, by varying the maximum torque absorbed by the brake as a function of the length of cable unwound, it is possible to keep the force connected to this torque as constant as possible over any the length of the cable.
- the drum 12 is secured to a shaft 30 extending along the axis 22.
- the shaft 30 is connected to the frame 28 by means of a rotary bearing 32 shown schematically in figure 1 .
- These may be bearings carrying the entire drum 12 and its shaft 30. Any other type of bearing is possible.
- Shaft 30 can also be used to transmit power from motor 24 to drum 12.
- the brake 26 comprises three plates 34, 36 and 38 movable in translation relative to the frame 28 along the axis 22.
- the plates 34, 36 and 38 are immobilized in rotation relative to the frame 28 around the axis 22.
- the brake also comprises two plates 40 and 42 immobilized in rotation with respect to the shaft 30. At least one of the plates 40 or 42 is free in translation with respect to the shaft 30.
- the plates 34 , 36 and 38, immobilized in rotation with respect to the frame 28 and the plates 40 and 42, immobilized in rotation with respect to the shaft 30, are alternated.
- the plates 34, 36 and 38 sandwich the plates 40 and 42.
- the invention can be implemented regardless of the number of plates immobilized in rotation relative to the frame.
- the resistant torque that the brake 26 can operate to oppose the rotation of the drum 12 is proportional to the surface and to the number of interfaces between the two types of plates and to the force exerted to press the plates against each other. others.
- two plates immobilized in rotation with respect to the shaft 30, plates 40 and 42 are implemented.
- the plates 40 and 42 In order to allow the compression of the plate 36, the plates 40 and 42 must have a degree of freedom in translation with respect to the shaft 30 while remaining immobilized in rotation with respect to the shaft 30.
- the connection between the plates 40, 42 and shaft 30 can be secured by splines extending along the axis 22. Furthermore, the plates 40 and 42 are immobilized in rotation with respect to the shaft 30 which is itself fixed to the drum 12. It would also be possible to fulfill the function of the two plates 40 and 42 by one of the drum flanges 12.
- the various plates 34 to 42 are, for example, of circular section around the axis 22.
- the two types of plates 34, 36 and 38 on the one hand and 40 and 42 on the other hand have the same diameter which simplifies the production of the brake 26. Any other form of plate is possible. It is even possible to provide several plates of one type opposite a single plate of the other type. It is for example possible to provide a pair of pads, immobilized in rotation with respect to the frame 28 around the axis 22, coming to compress a disc integral with the drum 12. Several pairs of pads can be implemented around a same disk.
- the brake 26 comprises a compression element arranged to compress the plates 34 to 42 against each other.
- the compression element is an elastic element 44 is shown in the form of several coil springs. A single coil spring winding around the axis 22 can also be implemented.
- the compression force is proportional to the length L of the elastic element 44 along the axis 22. Any other compression element can also be used.
- the compression can for example be hydraulic or pneumatic, the compression force being proportional to the pressure of the fluid used.
- the brake 26 also includes a mechanism 46 for adjusting the torque exerted by the brake.
- the adjustment mechanism 46 makes it possible to adjust the force exerted by the compression element 44 as a function of the rotation of the drum 12. More precisely, when the drum 12 rotates so as to unwind the cable 14, the number of layers of cable 14 wound on the drum 12 decreases and the adjustment mechanism 46 is configured so that the force exerted by the compression element 44 decreases so as to reduce the maximum torque that the brake 26 can exercise before slip.
- the variation of the force exerted by the compression element 44 as a function of the rotation of the drum 12 is defined so as to maintain the force exerted on the cable 14 corresponding to the maximum torque of the brake 26 substantially constant or at least substantially constant between two successive winding layers of the cable 14 throughout its winding around the drum 12.
- the adjustment mechanism 46 is configured to transform a rotational movement of the drum 12 into movement translation of one of the ends of the elastic element 44.
- a screw-nut system is well suited to this movement transformation.
- Other motion transformation mechanisms are also possible, such as a cam mechanism or an eccentric mechanism.
- the chambers of the jack are fed by a two-way pump actuated by the rotation of the shaft 30.
- the shaft 30 can be threaded and a nut cooperating with this thread can bear against the elastic element 44 to adjust the length L.
- the thread makes it possible to establish a linear function between the angular position of the drum 12 around its axis 22 and the maximum brake torque.
- the thread pitch defines the slope of the linear feature.
- the adjustment mechanism 46 comprises a pinion 48 integral with the shaft 30 and a wheel toothed forming a nut 50 and meshing with the pinion 48.
- the number of teeth of the pinion 48 is lower than that of the nut 50, thus allowing a speed reduction between the drum 12 and the nut 50.
- a screw 52 cooperates with the nut 50 and presses on a wedge 54 on which the elastic element 44 bears. The rotation of the drum 12 moves the wedge 54 in translation along the axis 22.
- any other speed reduction mechanism is of course possible. between the shaft 30 and the nut 50.
- brakes can be implemented within the scope of the invention. It is for example possible to implement a brake, commonly called a drum brake, in which an inner cylindrical surface with axis 22 rotates with the shaft 30. Inside this surface, pads movable radially with respect to the axis 22 bear against the inner cylindrical surface. The pads are connected in rotation to the frame 28 around the axis 22. The braking torque is a function of the bearing force of the pads against the inner cylindrical surface. The torque adjustment mechanism then moves the pads radially to modify the torque exerted by the brake. In the torque adjustment mechanism, there is a screw-nut system. The translation of the screw is radial and the nut driving the screw rotates around the radial axis of the screw and is moved by the shaft 30 via a bevel gear.
- the brake 26 is useful when the winch 10 is stationary, in other words when the drum 12 is not rotating and a force less than the maximum acceptable force is exerted on the cable 14. In this situation, motor 24 is stopped. When it is desired to operate the winch 10 by actuating the motor 24, it is useful to release the brake 26.
- the winch 10 comprises a mechanism for operating the brake 60.
- the mechanism 60 has two extreme positions: a first position, brake released, allows the free rotation of the drum 12 and a second position, brake applied, in which the brake 26 opposes the rotation of the drum 12. It is possible to control the mechanism 60 continuously between the two positions extremes, in order to brake or gradually release the drum 12.
- the mechanism 60 is coupled with the limiter of the variable torque limiter exerted by the elastic element 44. More precisely, the brake operating mechanism 60 is configured to deactivate the compression adjustment mechanism 46 of the first elastic element 44 in the first position of the brake 26.
- the mechanism 60 comprises a plate 62 disposed between the elastic element 44 and the plate 34.
- the plate 62 is movable in translation along the axis 22 In a movement to the left of Figure 1, the plate 62 compresses the spring 44 by moving it away from the plate 34. In other words, the plate 62 prevents the spring 44 from compressing the plates 34 to 42 between them.
- the leftward movement of the plate 62 serves the brake 26. Conversely, for tighten the brake 26, the plate 62 is left free and the spring 44 can compress the plates 34 to 42 together.
- the brake operating mechanism 60 may additionally comprise another elastic element 64 arranged between the plate 34 and the plate 62.
- the elastic element 64 also deforms along the axis 22.
- the plate 62 is left free in translation along the axis 22 and the elastic element 64 fully transmits the force exerted by the elastic element 44.
- the element elastic 64 relaxes and no longer transmits the force exerted by the elastic element 44 in order to release the brake 26.
- the elastic element 64 is calibrated to exert only the plate 34 only minimal. The elastic element 64 simply makes it possible to compensate for the functional clearances between the plates 34 to 42 with the lowest possible compression.
- the winch 10 may include a control module 70 ensuring both the control of the motor 24 and the brake operating mechanism 60 in a coordinated manner. More precisely, the control module 70 authorizes the rotation of the motor 24 when the brake is released and prohibits the rotation of the motor 24 when the brake is applied.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
- Braking Arrangements (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2021402078A AU2021402078A1 (en) | 2020-12-17 | 2021-12-17 | Winch equipped with a variable torque limiter |
US18/266,244 US20240025712A1 (en) | 2020-12-17 | 2021-12-17 | Winch equipped with a variable torque limiter |
CA3202620A CA3202620A1 (fr) | 2020-12-17 | 2021-12-17 | Treuil dote d'un limiteur de couple variable |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2013449A FR3118015B1 (fr) | 2020-12-17 | 2020-12-17 | Treuil équipé d’un limiteur de couple variable |
FRFR2013449 | 2020-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022129577A1 true WO2022129577A1 (fr) | 2022-06-23 |
Family
ID=76159456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/086601 WO2022129577A1 (fr) | 2020-12-17 | 2021-12-17 | Treuil equipe d'un limiteur de couple variable |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240025712A1 (fr) |
AU (1) | AU2021402078A1 (fr) |
CA (1) | CA3202620A1 (fr) |
FR (1) | FR3118015B1 (fr) |
WO (1) | WO2022129577A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115650092A (zh) * | 2022-10-25 | 2023-01-31 | 徐州建机工程机械有限公司 | 一种紧绳装置及塔式起重机 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10034336C2 (de) * | 2000-07-14 | 2003-01-02 | Welte Fahrzeugbau Gmbh | Seilwinde für die Holzbringung im Forst |
EP3028983A1 (fr) * | 2014-12-05 | 2016-06-08 | Zollern GmbH & Co. KG | Treuil, en particulier treuil à chute libre doté d'un frein de service et d'arrêt |
US20160340158A1 (en) * | 2015-05-19 | 2016-11-24 | Goodrich Corporation | Winch or hoist system with clutch adjustment |
-
2020
- 2020-12-17 FR FR2013449A patent/FR3118015B1/fr active Active
-
2021
- 2021-12-17 US US18/266,244 patent/US20240025712A1/en active Pending
- 2021-12-17 AU AU2021402078A patent/AU2021402078A1/en active Pending
- 2021-12-17 CA CA3202620A patent/CA3202620A1/fr active Pending
- 2021-12-17 WO PCT/EP2021/086601 patent/WO2022129577A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10034336C2 (de) * | 2000-07-14 | 2003-01-02 | Welte Fahrzeugbau Gmbh | Seilwinde für die Holzbringung im Forst |
EP3028983A1 (fr) * | 2014-12-05 | 2016-06-08 | Zollern GmbH & Co. KG | Treuil, en particulier treuil à chute libre doté d'un frein de service et d'arrêt |
US20160340158A1 (en) * | 2015-05-19 | 2016-11-24 | Goodrich Corporation | Winch or hoist system with clutch adjustment |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115650092A (zh) * | 2022-10-25 | 2023-01-31 | 徐州建机工程机械有限公司 | 一种紧绳装置及塔式起重机 |
Also Published As
Publication number | Publication date |
---|---|
FR3118015A1 (fr) | 2022-06-24 |
US20240025712A1 (en) | 2024-01-25 |
FR3118015B1 (fr) | 2023-03-31 |
AU2021402078A1 (en) | 2023-07-06 |
CA3202620A1 (fr) | 2022-06-23 |
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