EP0172975B1 - Spreizvorrichtung für zweiteilige Treibscheiben - Google Patents

Spreizvorrichtung für zweiteilige Treibscheiben Download PDF

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Publication number
EP0172975B1
EP0172975B1 EP19840630126 EP84630126A EP0172975B1 EP 0172975 B1 EP0172975 B1 EP 0172975B1 EP 19840630126 EP19840630126 EP 19840630126 EP 84630126 A EP84630126 A EP 84630126A EP 0172975 B1 EP0172975 B1 EP 0172975B1
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EP
European Patent Office
Prior art keywords
pulley
spreading
cable
studs
disk
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.)
Expired
Application number
EP19840630126
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English (en)
French (fr)
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EP0172975A1 (de
Inventor
Alain Zampetti
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.)
Secalt SA
Original Assignee
Secalt SA
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 Secalt SA filed Critical Secalt SA
Priority to DE1984630126 priority Critical patent/DE172975T1/de
Priority to EP19840630126 priority patent/EP0172975B1/de
Priority to DE8484630126T priority patent/DE3472783D1/de
Priority to ES546361A priority patent/ES8608444A1/es
Publication of EP0172975A1 publication Critical patent/EP0172975A1/de
Application granted granted Critical
Publication of EP0172975B1 publication Critical patent/EP0172975B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7415—Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees

Definitions

  • the invention relates to a free cable lifting device with a drive pulley composed of two half-pulleys, each of which has on its peripheral edge a groove part for cable and one of which is controlled, directly or indirectly, by one motor and supports the other.
  • the half-pulleys are pressed towards each other by a series of pressure devices rotating with them and distributed uniformly along their periphery.
  • a lifting device of this kind and according to the precharacterizing part of claim 1 is described in German patent DE-C-2 522 033 - by the same applicant - according to which the annular half-pulley is particularly elastic and is separated from the other half-pulley, at the places where the cable enters and exits the groove, using at least one spacer, so that the cable is subjected to a strong localized pressure which would deform it, causing unacceptable heating and wear.
  • the spacer device may consist of a roller rotating on an axis, parallel to the axis of the pulley, which is fixed to the housing to outside the periphery of the half-pulleys.
  • both these kinds of spacers effectively prevent the cable from being subjected on the part of the half-pulleys to a particularly strong pressure localized at the entry and the exit of the groove for cable, and consequently very heavy wear.
  • both types of spacing device cause friction and a high temperature rise in the contact zone between the caster or spacer ring and half-pulleys.
  • the present invention completely eliminates this drawback by providing a spacing device capable of applying at least one of the half-pulleys, in the cable entry and exit zone, at least one force directed exclusively along the axis of pulley.
  • An axial thrust is also applied in an elevation device described in the German publication DE-A-2 547 194, but to remove a series of pressure devices which clamp the cable directly against a half-groove of a pulley in one single piece.
  • the axial thrust is thus applied by a stationary cam separate from the pulley to casters which rotate with the pulley and simultaneously separate part of the pressure devices, so that the apparatus does not actually achieve the result of protecting the cable from overheating and wear caused by sudden tightening and loosening.
  • the cable elevation device comprises the elements of the characterizing part of claim 1.
  • All these embodiments comprise, on the other hand, a disc which has at least one inclined surface relative to the half-pulley mounted on the shaft (or on the axis) and which therefore lends itself to actuating one after the other in turn the above spacers, this disc can be stationary relative to a housing of the device or rotate with the pulley.
  • both the balls and the discs can be replaced by needle bearings (or cages).
  • the first pulley part 1 is keyed onto the shaft 3, the bearings (not shown) are housed in the housing of the lifting device, while the annular pulley part 2 is carried and rotated by the first part.
  • the cable is housed in a groove part 4 of the first pulley part 1 and is held there by the other groove part 5 which is located on the annular pulley part 2 and consists of a simple annular surface perpendicular to the axis 3 of the pulley.
  • a compression spring 7 which is wound around a sleeve 8 and bears, at one end, against the annular pulley part and, at the other end, on a flange of the sleeve, the latter being on the other hand retained by a screw 9 fixed in a threaded hole in the first pulley part. In this way the annular pulley part is pressed against the first pulley part.
  • the two pulley parts 1, 2 both have a zone of their periphery which is arranged radially outside the groove for cable and which is constituted by a circular ring 1 ', 2' provided, on its axially inner side , of a raceway 10, 11.
  • a spacer disc 12 which has its center on the axis of the pulley and a face 13 perpendicular to this axis while its second face 14 is slightly inclined relative to the first.
  • the thickness of the disc is therefore variable and precisely it gradually increases from a minimum located in the center of the cable winding arc to a maximum in the diametrically opposite zone.
  • the spacer disc In order to allow the passage of the cable at the level of its entry and exit from the cable groove of the pulley, the spacer disc has two parallel holes tangent to its inner peripheral surface.
  • each face 13, 14 of the spacing disc is arranged a raceway 16, 17 having the same diameter of the corresponding raceways respectively located, reciprocally opposite, on the circular rings 1 ', 2' of the half-pulleys .
  • the spacer disc is on the other hand connected to the housing of the lifting device by a bar 18. This is housed in a hole, parallel to the axis of the pulley, which is bored in a lug 19 fixed to the disc on the side opposite to the cable winding arc, and which can slide on the bar.
  • the disc is thus prevented from rotating on its axis (coinciding with the axis of the bar), but not from automatically carrying out, under the action of the clamping devices, a translation parallel to the axis of the pulley.
  • the disc because of the reciprocal inclination of its faces, has a thickness which, along the winding arc of the cable, is reduced to an extent such that the balls located opposite screws of the annular pulley part remain away from the indicated raceway and thus allows the cable to be tightened by the pressure devices.
  • the thickness of the disc is such that the balls, rolling in the path bearing, abut one after the other against the annular half-pulley and thus reciprocally - against the force of the pressure devices and thanks to the particular elasticity imparted to the annular pulley part by its relatively very small section - the sides of the cable groove.
  • the peripheral arrangement of the spacer disc allows it to intervene against a "creep of the cable” preventing it from climbing in the groove or even so radially - due to the fact that following its unilateral load its tensile stress and its elongation can vary greatly along its course in the throat.
  • the spacer disc thus also functions as a "cable guide” and, in addition, prevents part of the cable wear.
  • An advantage of this embodiment lies finally in the economic advantage which it presents for its relative simplicity, which very significantly lowers its manufacturing price compared to the other solutions.
  • this embodiment appears rather disadvantageous because, if we consider the relative arrangement of the cable, of the two series of balls and of the sliding bar, which are all arranged in the same plane, we can fear that foreign bodies will hinder, in particular, the longitudinal movement of the various elements and thereby compromise proper tightening of the cable. And, moreover, the same foreign bodies always deteriorate, sooner or later, more or less, the seals and make it necessary to replace them.
  • a second embodiment shown in FIGS. 4 and 5, makes it possible to overcome these drawbacks by replacing the spacer disc 12 of the first embodiment, arranged radially outside the cable, by a disc with parallel surfaces 30 which is placed longitudinally outside the pulley and which can oscillate on a spherical bearing 31 carried by the shaft 3.
  • This disc 30 is rotated by the half-pulley 1 by means of studs 32 sliding in holes bored in the axial direction in a zone 1 'of its peripheral edge which is arranged radially outside the groove for cable .
  • These studs at one of their ends, are articulated to the spacer disc by means of a ball joint 33 and, at the other end, are arranged opposite spherical notches 34 in a 2 ′ extension of the half-pulley 2.
  • a spacer roller 35 is fixed by its bracket to the housing - in such a way that its axis is parallel to the pulley and perpendicular to the axis of the latter - with respect to the place opposite to the cable winding arc and in such a position that it causes the spacer disc to tilt by a predetermined angle, it is understood that each stud, cyclically in turn, is carried to transmit to the 'respective spherical notch a force (reaction) capable of spreading the half-pulley 2 to such an extent that the sides of the groove begin and stop tightening the cable only near the ends of the winding arc.
  • the lateral arrangement of the spacing disc eliminates the impossibility of coupling the drive pulley according to the invention with a toothed ring with a second drive pulley (equal or not) - well that the pulley according to the invention can obviously also be used alone (as shown, for simplicity, in Figure 5).
  • the half-pulley 2 can indeed, by approaching more or less than the half-pulley 1, allow the studs to protrude more or less opening their spacing, because by adjusting the advancement of the spacing roller we can now start and gradually end the tightening of the cable at the ends of the winding arc even if the thickness of the cable varies between certain limits .
  • the studs which, in this form of construction, can slide freely in their axial seats of the half-pulley 1 mounted on the shaft, are produced in two hollow coaxial parts 40 whose end free is provided with a flange 41 and which contain in their internal cavity a compression spring 42.
  • the spacer disc 43 with its notches vis-à-vis the spacer studs is located in a cavity inside the gear ring 44 for coupling with a second pulley according to the invention and is articulated to the casing of the lifting device by means of a ball cage 45 rolling in raceways on a cylindrical portion 46 projecting from the casing, in the direction of the axis of the pulley, and a needle stopper 47 mounted on a surface in an inclined circular ring integral with the casing.
  • this third embodiment of the pulley does indeed eliminate the disadvantages of the previous ones, but at the cost of a non-indifferent complexity which makes it rather expensive to manufacture.
  • very tight tolerances and very high resistance characteristics, as well as a correspondingly long working time are required by all the adjustments and surface treatments relating to the sliding path in the half-pulley mounted on the axis and the notches in the spacer disc, which must be exactly on the axis of the sliding paths, and therefore depend on the adjustment and surface treatment of the bearing to a ball cage supporting the spacer disc, as well as for the adjustment and surface treatment of the inclined seat arranged in the casing for the cage with thrust needles, which must be such as to ensure the correct inclination of the annular half-pulley.
  • a fourth embodiment guarantees the desired result at a cost price which is a fraction of that which must be provided for all of the adjustments and surface treatments mentioned.
  • the bearing with a bill cage 45 and the needle stopper 47 as well as the spacer disc 43 itself with a simple commercial needle stopper 50 which is to be mounted in a seat.
  • bearing 51 suitably inclined, arranged in the casing of the apparatus.
  • a fifth embodiment (FIGS. 9 and 10) can be chosen in order to discharge the casing from any function of resistance to thrust in the axial direction pertaining to the use of pressure devices.
  • the pressure devices 6 thrust transmitted by the spacer disc is completely taken up and neutralized by a spacer flange 62 rigidly mounted on the shaft 3 of the pulley.
  • the invention in fact provides in this case that the spacing disc 60, also provided with notches opposite the spacing studs, is supported, by means of a ball bearing 61, on a flange d 'spacer 62 which has two surfaces in a circular crown, one of which 63 is slightly inclined relative to the second 64.
  • This spacer flange 62 is, on the one hand, fixed relative to the casing by a rod 65 and, on the other hand, articulated to the shaft 3 of the pulley by means of a roller stop 66 and a hub 67 on roller bearing 68, the forces transmitted by this stop and this hub being, in turn, taken up by a support piece 69 consisting of a stop flange with hub which is rigidly fixed to the shaft of the pulley.
  • a sixth solution achieves all the kinematic and exercise results while avoiding all the necessary adjustments and surface treatments in relation to the sixth solution: it suffices , also in this case, to replace the ball bearing 61, the roller bearing 68 and the roller bearing 66 as well as the spacer disc 60 and the spacer flange 62 with hub 67 themselves by a simple stop with two crowns of needles and median plate with inclined "floating" faces 70 on the market, the outer ring 71 of which can be clamped in a flange 72 with hub 73 rigidly mounted on the pulley shaft using a key and a push ring 74 while the middle plate 75 is fixed to the housing, for example, by a rod 76.
  • the middle plate can, by the use of this stop rod sliding in the radial direction either in its seat fitted in the middle plate or in its seat in the housing, ê be kept “floating" and thus receive its self-centering from the two crowns of needles, themselves normally subject to self-centering.
  • the spacing device may comprise - instead of the flange 72 provided with a hub mounted on the shaft of the pulley by means of a key in a well-defined position, essentially dependent, unequivocally, on a single cable thickness - a stop assembly 81 (FIGS. 12 and 13) constituted by a threaded end 82 of the pulley shaft, by a stop flange 83 and by an adjusting nut 85.
  • the stop flange has a threaded hub 84 fixed on the shaft end 82 and its position in the axial direction can obviously be determined by more or less screwing the adjusting nut 85 on the threaded end 82 and tightening the stop flange against the adjusting nut strongly enough so that frictional forces between the surfaces reciprocally with respect to the hub 84 and the nut 85 as well as between the threads of these and the thread of the shaft end 82 are created and, even in the presence of repeated vibrations, effectively oppose loosening of the stop flange. It would, moreover, be easy for any person skilled in the art - in case it is feared that a loosening will occur for unforeseeable or inevitable causes - to provide the stop assembly of any known stop system.
  • stop rod 86 of the "floating" middle plate 87 of the spacer 80 must itself be able to move itself in the axial direction, in one direction and in the other, to the using, for example, a sliding slide (not shown).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pulleys (AREA)
  • Friction Gearing (AREA)
  • Catching Or Destruction (AREA)
  • Rolling Contact Bearings (AREA)

Claims (10)

1. Seilhubvorrichtung mit einer Antriebsscheibe, die aus zwei Halbscheiben (1, 2) besteht, von denen die eine (1) auf der Welle oder Achse (3) der Antriebsscheibe gelagert ist und die andere (2) ringförmig ist und von der ersten getragen wird, wobei die Halbscheiben durch mehrere Andrückvorrichtungen (6), die auf der Oberfläche der Antriebsscheibe gleichmässig verteilt sind, gegeneinandergedrückt und durch eine Spreizvorrichtung (12; 30; 43; 60) an einer Stelle allmählich auseinandergedrückt werden, die dem Umschlingungsbogen des Seiles gegenüberliegt,
dadurch gekennzeichnet,
dass die Spreizvorrichtung eine Spreizscheibe (12; 30; 43; 60) aufweist, die auf der Welle oder Achse (3) der Antriebsscheibe gelagert ist,
derart, dass wenigstens eine ihrer Seiten (14; 52; 63) ihren Mittelpunkt auf der Scheibenachse hat und relativ zu der auf der Welle oder Achse (3) gelagerten Halbscheibe (1) etwas geneigt ist, und
dass die Spreizvorrichtung ausserdem wenigstens eine Reihe von Spreizelementen (32; 40; 53) aufweist, die längs des Umfangs der Antriebsscheibe gleichmässig verteilt sind und die mit der Spreizscheibe (12; 30; 43; 50) eins nach dem andern zusammenwirken,
um die ringförmige Halbscheibe (2) von der anderen Halbscheibe (1) an der besagten Stelle zurückzudrücken, indem sie nacheinander auf die ringförmige Halbscheibe (2) eine Kraft übertragen, die in einer zu der Achse der Antriebsscheibe parallelen Richtung gerichtet ist.
2. Seilhubvorrichtung nach Anspruch 1, dadurch gekennzeichnet,
dass die Spreizscheibe (12) relativ zu einem Gehäuse der Hubvorrichtung stillstehend ist.
3. Seilhubvorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
dass die Spreizvorrichtung (12) eine Bohrung aufweist, deren Durchmesser grösser als der Aussendurchmesser der Seilrille (4, 5) der Antriebsscheibe ist, und
dass die Spreizscheibe (12) zwischen den Halbscheiben (1, 2) gegenüber zwei ringförmigen Teilen (1', 2') ihrer jeweilingen Umfangsflächen angeordnet ist, welche radial ausserhalb der jeweiligen Seilhalbrillen (4, 5) hingestellt sind, und
dass zwischen jeder Halbscheibe (1, 2) und der Spreizscheibe (12) eine Reihe von Kugeln in einem Paar Laufbahnen (10 - 11, 16 - 17) läuft, welche in dem ringförmigen Teil (1', 2') der Umfangsfläche jeder Halbscheibe (1, 2) und in der Seite (13, 14) der Spreizscheibe (12) gebildet sind, die jewelis diesem ringförmigen Teil (1', 2') gegenübersteht, und dass die Spreizscheibe (12) mit einem radialen Ansatz versehen ist, der eine axiale Bohrung aufweist, und in axialer Richtung durch eine Stange geführt wird, die an dem Gehäuse befestigt ist und in die besagte Bohrung eingreift.
4. Seilhubvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass die Spreizscheibe (30; 43; 60) durch die Halbscheibe (1), die auf der Welle (3) der Antriebsscheibe zwischen der ringförmigen Halbscheibe (2) und der Spreizscheibe (30; 43; 60) gelagert ist, direkt oder indirekt in Drehung versetzt wird.
5. Seilhubvorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
dass die auf der Welle (3) gelagerte Halbscheibe (1) und die ringförmige Halbscheibe (2) je einen ringförmigen Umfangsteil (1', 2') aufweisen, welcher radial ausserhalb der Seilrille (4, 5) hingestellt ist und in welchem eine Reihe von Bohrungen, die parallel zu der Antriebsscheibenachse gerichtet sind, beziehungsweise eine Reihe von Rundkerben (34), die gegenüber den jeweiligen Bohrungen angeordnet sind, gleichmässig verteilt sind, und
dass die Spreizelemente aus Spreizbolzen (32) bestehen, die an der Spreizscheibe (30) durch Kugelgelenke (33) angelenkt sind und die in den besagten Bohrungen verschiebbar sind, und
dass die Spreizscheibe (30) auf der Welle (3) mittels eines Kugelgelenks (31) gelagert ist und somit eine geeignete Neigung relativ zu der Antriebsscheibe einnehmen kann, aufgrund der Reaktion einer Rolle (35), deren Achse an dem Gehäuse auf der Seite befestigt ist, die dem Umschlingungsbogen des Seiles gegenüberliegt,
derart, dass sämtliche Spreizbolzen (32) in den jeweiligen axialen Bohrungen eskamotiert bleiben, mit Ausnahme desjenigen Spreizbolzens, der sich der Reihe nach gegenüber der Rolle (35) befindet und die ringförmige Halbscheibe (2) zurückdrückt.
6. Seilhubvorrichtung nach Anspruch 4,
dadurch gekennzeichnet,
dass die Spreizscheibe (43) und die ringförmige Halbscheibe (2) je eine Reihe von Rundkerben (34) aufweisen, die längs des Umfangs radial innerhalb der Seilrille (4, 5) gleichmässig verteilt sind, und
dass die auf der Welle (3) gelagerte Halbscheibe (1) eine Reihe von Bohrungen aufweist, die parallel zu der Scheibenachse gerichtet und jeweilig gegenüber der Rundkerbe (34) angeordnet sind, und
dass die Spreizelemente aus Bolzen in zwei Hohlteilen (40) bestehen, welche in den besagten Bohrungen verschiebbar sind und welche in den jeweiligen Rundkerben (34) durch Federn (42) gehalten werden, die in ihrem Inneren untergebracht sind, und
dass die Spreizscheibe (43), die durch die Spreizbolzen (40) in Drehung versetzt wird, sich auf einem Kugellager (45) und einem Axialnadellager (47) dreht, welche in Sitzen gelagert sind, die mit dem Gehäuse fest verbunden sind und deren gemeinsame Achse relativ zu der Antriebsscheibenachse leicht geneigt ist,
derart, dass die Spreizbolzen (40) in den jeweiligen axialen Bohrungen während der Drehung eskamotiert bleiben, bis sie an der zu dem Umschlingungsbogen des Seiles gegenüberliegenden Stelle einer nach dem anderen gegen die Wirkung der Andrückvorrichtungen (6) hervorspringen, um die ringförmige Halbscheibe (2) zurückzudrücken.
7. Seilhubvorrichtung nach Anspruch 6,
dadurch gekennzeichnet,
dass die Spreizbolzen nicht in zwei Hohlteilen (40) sind, sondern in einem einzigen Vollstück (53), und dass die Spreizvorrichtung anstatt der Spreizscheibe (43), des Kugellagers (45) und des Axialnadelkäfigs (47) ein Axialnadellager aufweist, das ebenfalls in einem Sitz (51) gelagert ist, der mit dem Gehäuse fest verbunden ist und dessen Achse relativ zu der Antriebsscheibenachse leicht geneigt ist.
8. Seilhubvorrichtung nach Anspruch 6,
dadurch gekennzeichnet,
dass die Spreizbolzen nicht in zwei Hohlteilen sind, sondern in einem einzigen Vollstück (53), und
dass die Spreizscheibe (60), die durch die Spreizbolzen (53) in Drehung versetzt wird, mittels eines Axialkugelkäfigs (61) gegen eine zweite Scheibe (62) mit Nabe (67) drückt, die relativ zu dem Gehäuse stillstehend ist, und dass diese stillstehende Scheibe (62) durch einen Flansch (69) einer Buchse, die mit der Welle (3) fest verbunden ist, mittels eines Axialnadellagers (66) und eines Rollenlagers (68) gestützt ist, die in dem Flansch (69) beziehungsweise in seiner Buchse gelagert sind, und
dass eine Seite (63) der stillstehenden Scheibe (62) eine geeignete Neigung relativ zu der Antriebsscheibe aufweist, derart, dass die Spreizscheibe (60) dieselbe Neigung einnimmt und die ringförmige Scheibe (2), mittels der Bolzen (53) nacheinander, auf der Seite zurückdrückt, die dem Umschlingungsbogen des Seils gegenüberliegt.
9. Seilhubvorrichtung nach Anspruch 8,
dadurch gekennzeichnet,
dass sie anstatt der Spreizscheibe (60), die sich mit der Antriebsscheibe dreht, und der stillstehenden zweiten Scheibe (62) sowie des Axialkugelkäfigs (61) beziehungsweise des Axialnadellagers (66) und des Rollenlagers (68) ein zweireihiges Axialnadellager (70) aufweist, das sich gegen den Flansch (72) einer Buchse (73) stützt, und dass die Mittelplatte (75) dieses Axiallagers (70) relativ zu dem Gehäuse stillstehend ist und eine Seite aufweist, die relativ zu der Antriebsscheibe geeignet geneigt ist, derart, dass der Aussenring des Axiallagers (70), der sich auf der Seite der Antriebsscheibe befindet, die ringförmige Halbscheibe (2), mittels der Bolzen (53) nacheinander, auf der Seite zurückdrückt, die dem Umschlingungsbogen des Seiles gegenüberliegt.
10. Seilhubvorrichtung nach Anspruch 9,
dadurch gekennzeichnet,
dass die Bohrung der Buchse (84) mit Flansch (83) sowie der Teil (82) der Welle, auf dem diese Buchse (84) befestigt ist, mit Gewinde versehen sind, und
dass die axiale Position des zweireihigen Axialnadellagers (70) relativ zu der Antriebsscheibe geeignet verändert werden kann, indem die Buchse (84) mit Flansch (83) gegen eine Einstellmutter (85) geschraubt wird, die ebenfalls auf dem mit Gewinde versehenen Wellenteil (82) aufgeschraubt ist, und
dass die Mittelplatte (87) dieses Axiallagers (70) durch ein Arretiermittel (86) daran gehindert ist, sich relativ zu dem Gehäuse zu drehen, wobei dieses Arretiermittel gestattet, dass sie sich axial verschiebt.
EP19840630126 1984-08-29 1984-08-29 Spreizvorrichtung für zweiteilige Treibscheiben Expired EP0172975B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE1984630126 DE172975T1 (de) 1984-08-29 1984-08-29 Spreizvorrichtung fuer zweiteilige treibscheiben.
EP19840630126 EP0172975B1 (de) 1984-08-29 1984-08-29 Spreizvorrichtung für zweiteilige Treibscheiben
DE8484630126T DE3472783D1 (en) 1984-08-29 1984-08-29 Spreader device for two-piece driving pulley
ES546361A ES8608444A1 (es) 1984-08-29 1985-08-23 Perfeccionamientos en los dispositivos de separacion de las poleas de arrastre de dos partes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19840630126 EP0172975B1 (de) 1984-08-29 1984-08-29 Spreizvorrichtung für zweiteilige Treibscheiben

Publications (2)

Publication Number Publication Date
EP0172975A1 EP0172975A1 (de) 1986-03-05
EP0172975B1 true EP0172975B1 (de) 1988-07-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840630126 Expired EP0172975B1 (de) 1984-08-29 1984-08-29 Spreizvorrichtung für zweiteilige Treibscheiben

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EP (1) EP0172975B1 (de)
DE (2) DE172975T1 (de)
ES (1) ES8608444A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT235637Y1 (it) * 1995-05-31 2000-07-12 Vado Giovanni Antonio Dispositivo per salpare sagole e/o cime.
EP2275379A1 (de) 2009-07-17 2011-01-19 Hugo Leemans Sicherheitsaufzug
CN112228527B (zh) * 2020-10-15 2022-05-17 重庆大学 一种可变齿厚的齿轮组件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE429820C (de) * 1925-05-29 1926-06-03 Guilleaume Bollen Zweiteilige Seilscheibe
CH119296A (fr) * 1926-06-29 1927-08-01 Robert Fuchs & Fils Dispositif de commande d'un organe flexible.
DE2522033C2 (de) * 1975-05-17 1983-01-05 Greifzug Gesellschaft für Hebezeugbau mbH, 5070 Bergisch-Gladbach Treibscheibentriebwerk
BE833841A (nl) * 1975-09-26 1976-01-16 Hijsinrichting
NL165709C (nl) * 1975-09-26 1981-05-15 Western Gear Europ Hijsinrichting.
DE2547194A1 (de) * 1975-10-22 1977-05-05 Erich Fritz Antriebsvorrichtung fuer einen foerderstrang

Also Published As

Publication number Publication date
ES8608444A1 (es) 1986-07-16
DE3472783D1 (en) 1988-08-25
EP0172975A1 (de) 1986-03-05
DE172975T1 (de) 1986-09-04
ES546361A0 (es) 1986-07-16

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