EP3705447B1 - Treuil à câble, notamment pour une grue - Google Patents

Treuil à câble, notamment pour une grue Download PDF

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Publication number
EP3705447B1
EP3705447B1 EP20156800.3A EP20156800A EP3705447B1 EP 3705447 B1 EP3705447 B1 EP 3705447B1 EP 20156800 A EP20156800 A EP 20156800A EP 3705447 B1 EP3705447 B1 EP 3705447B1
Authority
EP
European Patent Office
Prior art keywords
bearing
frame element
cable
frame
motor
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.)
Active
Application number
EP20156800.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3705447A1 (fr
Inventor
Jérémy BLASIAK
Olivier Gay
Ludovic DECROON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP3705447A1 publication Critical patent/EP3705447A1/fr
Application granted granted Critical
Publication of EP3705447B1 publication Critical patent/EP3705447B1/fr
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Classifications

    • 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
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • 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
    • B66D1/30—Rope, cable, or chain drums or barrels
    • 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
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B66D1/365—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of pivotably mounted drums or barrels
    • 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
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B66D1/39—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of axially-movable drums or barrels

Definitions

  • the invention relates to a cable winch, in particular for a lifting device or a transport device.
  • a cable winch comprises a cable drum around which a cable is wound, where the cable drum is rotated by means of a motorized system in two opposite directions of rotation for winding / unwinding of the cable on the cable drum.
  • US 3740021 A discloses a winch according to the preamble of independent claim 1.
  • the cable winch can for example be a load lifting winch which coils / unwinds a lifting cable to control the raising and lowering of a load, or a lifting winch. distribution which ensures the winding / unwinding of a distribution cable to control the advance and the retreat of a distribution carriage moving along a crane boom, or a boom hoisting winch which ensures the winding / unwinding of a lifting cable to control the raising and lowering of the crane boom.
  • the invention may also find applications in transport devices such as cable cars and elevators, and in other types of lifting devices such as gantries.
  • a cable winch comprises a frame on which a cable drum is rotatably mounted, where the frame is in one piece and has two fixed bearings supporting the cable drum, and also supporting the motorized system.
  • a first problem with this type of cable winch is that the operation of the transmission between the motorized system and the cable drum is essentially dependent on perfect compliance with the alignments of the various components, and in particular of the two fixed bearings of the frame.
  • the motorized system generally incorporates a reduction gear which is positioned by the alignment of the cable drum between the two fixed bearings of the frame, and the slightest misalignment linked to a manufacturing defect or to a deformation of the working frame can be a source of vibrations.
  • the transmission between the motorized system and the cable drum has constrained connections and therefore an assembly considered almost hyperstatic, originally vibration problems and therefore wear and parasitic noise which can be disturbing or even harmful to people nearby.
  • a second problem is that due to the design of the reducer, the latter is conventionally carried by one of the bearings of the frame while the motor of the motorized system is carried by the other of the bearings of the frame, which imposes a transmission between this motor and this reducer via a relatively long transmission shaft because it must extend between the two bearings of the frame.
  • This increased length of the transmission shaft has the characteristic of also promoting the creation of vibratory torsional regimes, at operating regimes intrinsically linked to the torsional stiffnesses and to the inertias of the reduction gear and of the transmission shaft. It can therefore result in critical regimes on the working range, which result in parasitic noises, possibly incompatible with regulations in terms of noise pollution.
  • a third problem is that the motor of the motorized system is cantilevered on a fixed bearing of the chassis, which also constitutes a source of vibration and also of misalignment in the transmission between the motorized system and the cable drum because , under the effect of its own weight, the engine tends to separate the two bearings of the frame and therefore to misalign the components, which will amplify the risks mentioned in the two paragraphs above.
  • the invention aims to resolve the aforementioned problems in whole in part, by proposing a cable winch which reduces, or even eliminates, misalignment constraints, in order to reduce vibrations and parasitic noise at the source.
  • the frame comprises a first frame element and a second frame element coupled to each other by an articulation system provided with several degrees of freedom including at least one degree of freedom in translation along l 'main axis and at least one degree of freedom in rotation about an orthogonal secondary axis to the main axis, and the cable drum is interposed between the first frame member and the second frame member.
  • one of the frame elements (such as the first frame element) is fixed or static, in particular by being fixed to a fixed structure, while the other of the frame elements (such as the second frame element) is mobile in the sense that it has several degrees of freedom with respect to the static frame element, thus making it possible to compensate or take up any misalignments and thus reduce vibrations and noise.
  • the invention therefore proposes to produce the frame, forming a supporting structure of the cable winch, in two frame elements, the first frame element of which directly connects the motor and the reduction gear, thus making it possible both to eliminate the long shafts of transmission and to balance the weight of the motor with that of the reducer.
  • the first frame element is fixed or static and the second frame element is mobile and it carries the motorized system.
  • This first frame element can be in one piece or be completely integrated into the fixed structure of the lifting device or of the transport device.
  • the articulation system has a degree of freedom in translation limited to a limiting range in translation, so that the relative displacement in translation in the main direction between the first frame element and the second frame element is limited. to this limited range in translation.
  • the limiting range in translation has a maximum amplitude of 2 centimeters.
  • the articulation system has a degree of freedom in rotation limited to a limit angular range, so that the relative angular movement between the first frame element and the second frame element is limited to this limit angular range .
  • the limit angular range has a maximum angular amplitude of 10 degrees.
  • the articulation system is provided with at least two degrees of freedom in rotation along two secondary axes orthogonal to the main axis.
  • the articulation system forms, between the first frame element and the second frame element, an annular linear connection with a locking in translation along the two secondary axes.
  • the cable drum is rotatably mounted on the first bearing by means of a ball joint locked axially along the main axis.
  • the first frame element comprises a base integral with the first bearing
  • the second frame element comprises two feet integral with the second bearing
  • the articulation system comprises two main articulations provided between the base of the first element. frame and the respective legs of the second frame member.
  • each of the two main articulations comprises a ball bearing and a material axis extending parallel to the main axis and housed inside said ball bearing.
  • the spherical bearing is a sliding spherical bearing with the spherical bearing which is sliding on the material axis.
  • one of the two articulation elements is in the form of a yoke with two facing plates provided with first orifices or respective second orifices facing each other, and the other of the two articulation elements is in the form of an intermediate plate interposed between the two plates of the yoke and provided with a second orifice or a first hole in which the spherical bearing is housed.
  • the transmission assembly includes an elastomeric coupling between the motor shaft and the reduction shaft.
  • Such an elastomeric coupling forms a coupling which is both torsionally rigid to transmit rotational torque between the motor shaft and the reduction shaft, while allowing angular, axial and parallel misalignments between the shaft. motor and reduction shaft.
  • the ball joint is formed of a ball bearing locked axially along the main axis.
  • the reducer extends at least partially inside the cable drum.
  • the invention also relates to an apparatus as described above, where the apparatus is a crane, for example a tower crane, a port crane or a mobile crane.
  • the apparatus is a crane, for example a tower crane, a port crane or a mobile crane.
  • a cable winch 1 comprises a frame 2 as illustrated in FIG. figure 2 , a cable drum 3 rotating along a main axis Y as illustrated in the figures 5 , 7 and 8 , and a motorized system 4 as illustrated on the figures 4 , 5 , 7 and 8 .
  • the figure 1 is a diagram of the mechanical connections in this cable winch 1.
  • the frame 2 is not a one-piece frame, because it is composed of two frame elements 5, 6, namely a first frame element 5 and a second frame element 6.
  • the first frame member 5 forms a fixed or static member which is intended to be anchored or fixed or integrated on a fixed structure of a transport device or a lifting device, such as a crane.
  • the second frame element 6 is in turn an element which is coupled to the first frame element 5 with relative mobility according to several degrees of freedom, and in in particular a degree of freedom in translation along the main axis Y, a degree of freedom in rotation along a first secondary axis X orthogonal to the main axis Y and a degree of freedom in rotation along a second secondary axis Z orthogonal to the main Y axis and the first secondary X axis.
  • the first secondary axis X and the second secondary axis Z define a plane (X, Z) orthogonal to the main axis Y.
  • the main axis Y and the first secondary axis X define a horizontal (X, Y) plane
  • the second secondary axis Z defines a vertical direction orthogonal to this horizontal (X, Y) plane.
  • first frame element 5 and the second frame element 6 are coupled to each other by an articulation system 7 provided with several degrees of freedom, so that this articulation system 7 provides the second frame element 6 several degrees of freedom relative to the first frame element 5 which is static, which will make it possible to compensate for any misalignments in the mounting of the cable drum 3 and of the motorized system 4 on the frame 2.
  • this articulation system 7 forms, between the first frame element 5 and the second frame element 6, an annular linear connection (or cylinder sphere connection) with a locking in translation along the two secondary axes X, Z.
  • the second frame element 6 can translate with respect to the first frame element 5 along the main axis Y, and it can also pivot translate with respect to the first frame element 5 around the two secondary axes X and Z, but on the other hand it cannot translate according to the two secondary axes X and Z and it cannot rotate according to the principal axis Y.
  • the degree of freedom in translation is limited to a limit range in translation, so that the second frame member 6 can translate with respect to the first frame member 5 along the main axis Y in this limit range, which has a maximum amplitude of 2 centimeters, or even 1 centimeter.
  • Each of the two degrees of freedom in rotation is limited to a limit angular range, so that the second frame member 6 can pivot relative to the first frame member 5 along each of the secondary axes X and Z within this angular range limit, which has a maximum range amplitude of 10 degrees, or even 5 degrees.
  • the cable drum 3 rotatably mounted on this frame 2 along the main axis X, and therefore the cable drum 3 is interposed between the first frame member 5 and the second frame member 6.
  • the first frame element 5 has a base 50 and a first bearing 51 integral with the base 50, where the base 50 extends in a plane parallel to the plane (X, Y) and the first bearing 51 comprises a plate 52 extending orthogonally to the main axis Y, therefore in a plane parallel to the plane (X, Z).
  • the base 50 is formed of a frame comprising two side members 53 extending parallel to the main axis Y and spaced apart from each other, and two cross members 54 extending between the two side members 53 parallel to the first axis secondary X.
  • the side members 53 and the cross members 54 are secured together to form a rigid frame.
  • the side members 53 and the cross members 54 can be formed from metal sections, joined together for example by welding, screwing or bolting.
  • the base 50 is also provided with anchoring means, for anchoring to the fixed structure of the transport device or the lifting device.
  • anchoring means may be in the form of plates 55 with holes, secured to the base 50, for anchoring by screwing or bolting.
  • the plate 52 of the first bearing 51 is fixed to the two side members 53, between the two side members 53, preferably at the level of one of the cross members 54 or of one of the ends of the side members 53, so that, side view , the first frame element 5 has a general "L" shape, with the base 50 which forms the link between the first bearing 51 which carries the motorized system 4 on one side of the cable drum 3 and the second bearing 61 (described below) which carries the cable drum 3 on the other side.
  • the plate 52 can be a metal plate and it can be fixed to the side members 53 for example by welding, screwing or bolting.
  • the plate 52 has an orifice 56 of cylindrical shape, centered on the main axis Y, and designed to receive an articulation 31 of the cable drum 3.
  • the cable drum 3 is mounted to rotate along the main axis Y on the first bearing 51 in the orifice 56.
  • This orifice 56 is also bordered by holes on its periphery for fixing by bolting the pivot 31.
  • the second frame element 6 has a second bearing 61 facing the first bearing 51, where this second bearing 61 comprises a plate 62 extending orthogonally to the main axis Y, therefore in a plane parallel to the plane (X, Z) and thus to the plate 52 of the first bearing 51.
  • the plate 62 may be a metal plate.
  • This second frame element 6 comprises two feet 63 integral with the plate 62 of the second bearing 61.
  • these two feet 63 form an integral part of the plate 62 and thus extend the latter downward in the same plane parallel to the plane. (X, Z).
  • the plate 62 has a notch 66 formed in a slice on the top, where this notch 66 has a semi-cylindrical bottom centered on the main axis Y, therefore facing the orifice 56 of the plate 52.
  • This notch 66 is lined with holes on its periphery for fixing by bolting or screwing the motorized system 4.
  • the articulation system 7, which as a reminder forms an annular linear connection between the first frame element 5 and the second frame element 6, comprises two main articulations 70 provided between the base 50 of the first frame element 5 and the feet. 63 respective of the second frame member 6.
  • the two elements 71 are fixed vis-à-vis the two respective side members.
  • the fixed element 71 of each of the two main articulations 70 is in the form of a yoke with two facing plates 710 provided with orifices 711 (hereinafter called first orifices 711) which are respectively opposite each other. crossed by the material axis 73 concerned.
  • the plates 710 extend orthogonally to the main axis Y, therefore in a plane parallel to the plane (X, Z).
  • the plates 710 can be metallic and they can be fixed by screwing, bolting or welding on the side members 53.
  • the hardware axis 73 is mounted with or without play in these first circular holes 711, and the hardware axis 73 is locked on the fixed element 71 by means of two pins 75 provided at these two ends.
  • the foot 63 supports the movable element 72 which is in the form of an intermediate plate secured to the foot 63 and interposed between the two plates 710 of the fixed element 71.
  • this movable element 72 is an integral part of the foot 63 and more specifically forms one end of the foot 63. It should be noted that this movable element 72 is defined as “movable” insofar as it exhibits mobility relative to the foot. fixed element 71 to which it is coupled.
  • This movable element 72 is provided with a second circular orifice 721 which is aligned with the first orifices 711 of the fixed element 71, and which is crossed by the material axis 73.
  • the two articulation elements 71, 72 are coupled by means of the material axis 73 which is housed inside the first orifices 711 and of the second orifice 712.
  • This second orifice 721 can be provided in a cylindrical bush 720 integral with this movable element 72, and therefore here integral of the end of the foot 63.
  • each of the two main articulations 70 comprises a ball bearing 74 mounted inside the second orifice 721 of the movable element 72, and where the material axis 73 is housed inside this second orifice 721, thus providing the two degrees of freedom in rotation along the secondary axes X and Z.
  • the spherical bearing 74 is therefore mounted inside the cylindrical sleeve 720 provided on the end of the foot 63 interposed between the two plates 710 of the fixed element 71.
  • the movable element 72 is interposed between the two plates 710 of the fixed element 71 with a lateral play, so as to allow the angular movements allowed by the ball bearing 74.
  • the ball bearing 74 is a sliding spherical bearing, in other words this spherical bearing 74 is slidably mounted on the material axis 73, so that the movable element 72 and therefore the foot 63 exhibit mobility in translation with respect to the element fixed 71 along the main axis Y, and thus the two main joints 70 together provide the degree of freedom in translation along the main axis Y and the two degrees of freedom in rotation along the secondary axes X and Z.
  • the spherical bearing 74 comprises an inner ring 740 and an outer ring 741 forming a ball joint, where the inner ring 740 has a convex outer surface in a portion of a sphere which bears spherically on a concave inner surface in a portion of a sphere of the ring outer 741.
  • the outer ring 741 is fixed in the second hole 721, and more specifically in the cylindrical sleeve 720.
  • the motorized system 4 is carried by the frame 2, and is more specifically carried by the second frame element 6.
  • the reduction housing 47 is fixed in cantilever on the second frame element 5, and is more specifically fixed in cantilever and by bolting or screwing in the holes provided on the plate 62 of the second bearing 61 at the periphery. the notch 66. To do this, the reduction housing 47 has a flange 470 which is bolted or screwed to the plate 62.
  • the motor housing 42 extends on the outside of the frame 2, on one side of the second bearing 61, while the reduction housing 47 extends mainly on the inside of the frame 2, on the other side of the second bearing. 61, so that the reducer 43 extends at least partially inside the cable drum 3.
  • the output flange 46 is rotatably mounted on the reduction housing 47, with the interposition of a bearing 460.
  • the output flange 46 surrounds the reduction mechanism 48 (not visible in detail in the figures) and has an annular portion on which is screwed or bolted, using screws 461, the cable drum 3.
  • the transmission assembly 45 includes an elastomeric coupling between the motor shaft 41 and the reduction shaft 44, such an elastomeric coupling being a constant velocity coupling which employs elastomeric materials and which is both torsionally rigid. to transmit a torque in rotation between the motor shaft 41 and the reduction shaft 44, while allowing angular, axial and parallel alignment errors between the motor shaft 41 and the reduction shaft 44.
  • the motor shaft 41 and the reduction shaft 44 are both aligned with the main axis Y, and this elastomeric coupling itself forms the transmission assembly 45.
  • the transmission assembly 45 may also include an angle transmission system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Transmission Devices (AREA)
EP20156800.3A 2019-02-27 2020-02-12 Treuil à câble, notamment pour une grue Active EP3705447B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1901993A FR3093099B1 (fr) 2019-02-27 2019-02-27 Treuil à câble, notamment pour une grue

Publications (2)

Publication Number Publication Date
EP3705447A1 EP3705447A1 (fr) 2020-09-09
EP3705447B1 true EP3705447B1 (fr) 2021-12-29

Family

ID=67742552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20156800.3A Active EP3705447B1 (fr) 2019-02-27 2020-02-12 Treuil à câble, notamment pour une grue

Country Status (4)

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EP (1) EP3705447B1 (es)
CN (1) CN111620253B (es)
ES (1) ES2908897T3 (es)
FR (1) FR3093099B1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117049410B (zh) * 2023-10-12 2023-12-08 泰州市银杏舞台机械工程有限公司 一种环境适应性强的自排绳集成吊杆及其使用方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE536115C (de) * 1931-11-02 Demag Akt Ges Winde mit doppelseitig abgestuetzter Trommel
US3740021A (en) * 1970-09-22 1973-06-19 Eaton Corp Hoist
DE10343079B3 (de) * 2003-09-17 2005-05-19 Bauer Maschinen Gmbh Winde für eine Baumaschine
CN101362580A (zh) * 2008-09-02 2009-02-11 八达机电有限公司 一种带下限行程限位器的单相电动葫芦
CN201390615Y (zh) * 2009-04-09 2010-01-27 山东科技大学 一种新型乳化液绞车
CN202542760U (zh) * 2012-03-31 2012-11-21 重庆地质仪器厂 一种测井绞车
CN204198308U (zh) * 2014-11-10 2015-03-11 济宁矿业集团花园井田资源开发有限公司 一种提升绞车
CN104649169B (zh) * 2015-02-16 2017-03-29 中交四航局第二工程有限公司 一种沉管横移系泊绞车及系统
AT15602U3 (de) * 2017-07-05 2018-05-15 Hans Kuenz Gmbh Seilwindenanordnung

Also Published As

Publication number Publication date
ES2908897T3 (es) 2022-05-04
CN111620253A (zh) 2020-09-04
CN111620253B (zh) 2023-04-07
FR3093099A1 (fr) 2020-08-28
EP3705447A1 (fr) 2020-09-09
FR3093099B1 (fr) 2021-03-12

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