EP2539269B1 - Système de traction par câble pourvu d'un dispositif de freinage d'urgence - Google Patents

Système de traction par câble pourvu d'un dispositif de freinage d'urgence Download PDF

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Publication number
EP2539269B1
EP2539269B1 EP11707710.7A EP11707710A EP2539269B1 EP 2539269 B1 EP2539269 B1 EP 2539269B1 EP 11707710 A EP11707710 A EP 11707710A EP 2539269 B1 EP2539269 B1 EP 2539269B1
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EP
European Patent Office
Prior art keywords
cable
anchor
cable pull
cable drum
pull according
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.)
Not-in-force
Application number
EP11707710.7A
Other languages
German (de)
English (en)
Other versions
EP2539269A1 (fr
Inventor
Norbert Horndacher
Peter Kittsteiner
Ivica Zinic
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.)
Konecranes PLC
Original Assignee
Konecranes PLC
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 Konecranes PLC filed Critical Konecranes PLC
Publication of EP2539269A1 publication Critical patent/EP2539269A1/fr
Application granted granted Critical
Publication of EP2539269B1 publication Critical patent/EP2539269B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B66D1/16—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/32—Detent devices
    • B66D5/34—Detent devices having latches
    • 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

Definitions

  • the new cable has in the usual way a cable drum, which is to be put on a geared motor in rotation.
  • the cable drum is assigned a braking device.
  • the triggering of the braking device is preferably biased by a spring accumulator in the braking position. By means of a trigger mechanism, the spring accumulator is released and activates the brake.
  • a control device In order to detect this overspeed, a control device is provided.
  • the control device comprises a gear group of a ratchet wheel and a drive or polygon wheel, which is rotatably mounted on an axle, wherein the drive gear is coupled to the cable drum.
  • an anchor carrier is mounted on the axis of the two gears, which can perform at least one pendulum motion about the axis of rotation.
  • An anchor is mounted on the anchor carrier.
  • the armature has a latch at one end and a scanning member at the other end. The pawl is intended to cooperate with the ratchet while the scan member scans the drive gear.
  • a coupling device is provided which connects the armature carrier with the control device of the braking device.
  • control device can be prefabricated modular and can be coupled with any cable drums. It is not necessary to individually allow the control device for each cable drum and each cable. All it takes is a type-approved approval and an adaptation to the respective cable drum.
  • the drive gear for the armature may have an at least approximately polygonal outer peripheral shape. Under at least approximately polygonal-shaped also those designs are to be considered, in which the edges of the polygon between the corners are concave, if necessary to generate a higher ejection force for the anchor.
  • a slip clutch arrangement is provided kinematically between the drive gear and the cable drum. This can be formed by a friction pad or by a corresponding slipping belt.
  • a belt assembly preferably a V-belt arrangement may be provided.
  • a gear connection is also possible.
  • the belt assembly can provide a speed-up such that the drive gear rotates at a higher speed than the cable drum. In this way, a particularly sensitive control behavior can be achieved, in the sense that even small overspeed of the cable drum lead to the triggering of the emergency brake.
  • the scanning member may comprise a scanning roller rotatably mounted on an axis of the armature. As a result, sliding movements are excluded and the arrangement is wear and smooth.
  • a Bowden cable or a linkage can be used as a coupling device between the control device and the braking device.
  • the braking device may comprise a brake drum or brake disc coupled in a rotationally fixed manner to the cable drum and at least one brake shoe or brake caliper.
  • the brake drum may be formed by a cylindrical extension of the cable drum, while the brake shoe is placed as a slotted ring on the cable drum, which is biased with a predetermined radial force against this braking surface.
  • the braking device may have a locking device, by means of which the brake shoe can be locked.
  • top and bottom or “front” and “rear” refer to the normal installation position or the terminology for wire rope hoists.
  • Fig. 1 shows in a schematic plan view of a cable 1.
  • a cable drum 2 designed as a geared motor drive 3, an emergency braking device 4 and a control device 5 for the emergency brake.
  • the cable drum 2 has in a known manner rope grooves 7, in which the rope drops.
  • the rope itself is not shown, it would be on the right side.
  • a cylindrical extension 8 which serves as a brake drum.
  • a brake shoe 9 On this cylindrical extension of the cable drum 2 sits a brake shoe 9, which carries on its outside, as the other figures, a saw tooth 11.
  • the brake shoe 9 is frictionally held with a predetermined pressing force on the cylindrical extension 8.
  • the drive of the cable drum 2 is done, as already stated, via the geared motor 3, whose output shaft is illustrated at 12.
  • Bearing plates 13 and 14 for storing the cable drum are also indicated. Through this, the output shaft 12 passes through and a further bearing shaft 16th
  • V-belt pulley 17 On the free end of the bearing shaft 16 sits a V-belt pulley 17, which serves to drive the control device 5 and is part of this.
  • control device 5 The further structure of the control device 5 is based on the Figures 2 and 3 explained in detail.
  • the armature carrier 19 On the bearing plate 14 is fixed to the cable drum 2 coaxial axis 18. On this axis 18 an armature carrier 19 is pivotally mounted.
  • the armature carrier 19 is designed as a two-armed lever. Its lower end is connected via an arm 21 with a soul 22 of a Bowden cable 23.
  • At the upper end of the armature carrier 19 is pivotally mounted on an axis 24, an armature 26 rotatably.
  • the axis 24 is parallel to the axis 18.
  • the armature 26 is also a two-armed lever and contributes to his related Fig. 2 right end, a cam follower 27, which is aligned axially parallel to the axis 24. At the opposite end of the armature 26 is provided with a detent pawl 28, which is aligned as shown below or in the direction of the bearing axis 18.
  • the gear group 29 is composed of a drive or polygon 30 with regular polygonal outer shape and a ratchet wheel 31 together.
  • the drive wheel 30 has rounded corners and straight surfaces extending therebetween which, moreover, are formed symmetrically about the axis 18 as shown.
  • the non-rotatably coupled to the drive wheel 30 ratchet, however, carries teeth 32 with sharp edges 33.
  • the flanks 33 are adapted to interlock with a corresponding surface of the latch 28 locking.
  • the cam follower 27 cooperates with the outer peripheral surface of the drive wheel 30.
  • the gear group 29 is rotated by a V-belt pulley 34 in revolutions which is rotatably connected to the gear group 29.
  • the diameter of the V-belt pulley 24 is smaller than the diameter than the V-belt pulley 17, so that the V-belt pulley 34 is driven by a V-belt 35, which revolves around both pulleys, at a higher speed than the speed of the Cable drum 2 corresponds.
  • control device 5 still includes a tension spring 37, which acts as shown between the armature 26 and the armature carrier 19 and serves to keep the cam follower 27 in abutment against the outer peripheral surface of the drive gear 30.
  • the Bowden cable 23 establishes the mechanical connection between the control device 5 and the emergency brake device 4.
  • the emergency brake device 4 comprises a pawl 38, which is mounted pivotably on an axis 39 parallel to the axis of the cable drum. The free end of the pawl 38 is adapted to cooperate with the steep flank of the ratchet teeth 11. By a magnet assembly 39 which acts on the pawl 38 as shown, the pawl 38 is held out of engagement with the brake shoe 9. The pawl 38 forms, together with the toothing 11, a type of activation / release mechanism of the emergency brake device 4.
  • a lever 41 is further connected, to which a tension spring 47 engages, which finds an abutment at 43. With the help of the tension spring 47, the pawl 38 is biased in the engaged position with the teeth 11 of the brake shoe 9.
  • the armature 26 performs a more or less slow pitching movement about the axis 24.
  • the rotational speed of the gear group 29 increases accordingly.
  • the increasing rotational speed causes the scanning roller to accelerate radially outward when it travels along the straight edges in the direction of the corner of the traverse, so that it finally reaches the corner of the outer circumferential surface of the drive wheel 30 lifts.
  • the ratchet 28 will move so close to the axis 18 that the pawl 28 will enter the gap between two ratchet teeth 32. Now runs the steep edge 33 against the corresponding steep edge of the pawl 28 and locks the armature 26 in this snap-in position. The further rotational movement between the gear group 29 and the armature carrier 19 is thus blocked.
  • the brake shoe 9 is held, ie they can not rotate with the cable drum 2.
  • the friction between the brake shoe 9 and the cable drum 2 is effective, and it can be the cable drum 2 braked to a standstill.
  • V-belt 35 Destruction of the assembly is prevented because the V-belt 35 is correspondingly loose, so that on the one hand, it can introduce the necessary torque in the V-belt pulley 34, which is necessary so that the armature support 19 against the action of the holding electromagnet 39, the pawl 38 can move.
  • the bias is so small that the belt acts on the V-belt pulleys 17 and 34 as a slip clutch.
  • the purpose suitable belt tensioner is not shown for reasons of clarity.
  • the biasing spring 37 in conjunction with the moment of inertia of the armature 26 a vote can be achieved, which ensures that only from a corresponding overspeed of the cable drum the pawl 28 of the armature 26 engages with certainty in the gap between the teeth 32.
  • the spring 37 ensures that not even small pulses caused by the passage of a corner of the drive gear 30, already lead to a lock between the armature 26 and the drive gear 31 comes about.
  • the emergency brake device according to the invention comes without additional power supply from the outside. It only uses the kinetic and potential energy that is in the moving hook load.
  • the system thus works without errors even if the supply voltage should fail or the control for the geared motor 3 fails. In other words, it is a diverse solution for braking the cable drum 2.
  • a cable is provided with an emergency braking device.
  • the emergency brake device has a gear group driven via the cable drum. One of the two gears is scanned by a scanning lever of an anchor. The other end of the armature cooperates with a ratchet gear of the gear group. As soon as an overspeed occurs, the armature engages in the ratchet wheel and causes a rotational movement of the carrier on which the armature sits. This rotational movement is used to trigger a coupled with the cable drum mechanical braking device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Claims (14)

  1. Moyen de traction par câble (1), comprenant un tambour à câble monté à rotation (2), un dispositif d'entraînement (3) pour le tambour à câble (2), un dispositif de freinage (4) qui est conçu de façon à agir sur le tambour à câble (2) en le freinant et qui comporte un mécanisme de déclenchement/d'activation (11, 38), un dispositif de commande (5) pour le dispositif de freinage (4), caractérisé en ce que font partie du dispositif de commande (5) :
    - un groupe de roues dentées (29) qui est monté à rotation sur un axe (18), qui est entraîné par le tambour à câble (2) et qui se compose d'une roue d'entraînement (30) pourvue de prolongements radiaux et d'une roue de blocage (31) qui porte des dents (32),
    - un porte-ancre (19) qui est monté au moins pivotant sur l'axe (18), et
    - une ancre (26) qui est montée au moins oscillante sur le porte-ancre (19), qui porte, à une extrémité, un cliquet (28) coopérant avec la roue de blocage (31) et, à l'autre extrémité, un organe palpeur (27) pour la roue d'entraînement (30), et
    comprenant un dispositif d'accouplement (23) qui est disposé entre le porte-ancre (19) et le mécanisme de déclenchement/d'activation (11, 38) afin de transmettre un mouvement pivotant du porte-ancre (19) au mécanisme de déclenchement/d'activation (11, 38).
  2. Moyen de traction par câble selon la revendication 1, caractérisé en ce que la roue d'entraînement (30) présente une forme périphérique extérieure au moins approximativement polygonale.
  3. Moyen de traction par câble selon la revendication 11, caractérisé en ce qu'entre la roue d'entraînement (30) et le tambour à câble (2) est prévu, de manière cinématique, un agencement d'accouplement à friction (17, 34, 35).
  4. Moyen de traction par câble selon la revendication 1, caractérisé en ce que pour l'entraînement de la roue d'entraînement (30) est prévu un agencement de courroie, de préférence un agencement de courroie trapézoïdale (17, 34, 35) comprenant une poulie (17), qui est accouplée au tambour à câble (2) de manière solidaire en rotation, et une poulie (34) qui entraîne la roue d'entraînement (30).
  5. Moyen de traction par câble selon la revendication 4, caractérisé en ce que l'agencement de courroie (17, 34, 35) fournit une multiplication telle que la roue d'entraînement (30) tourne à une vitesse de rotation supérieure à celle du tambour à câble (2).
  6. Moyen de traction par câble selon la revendication 1, caractérisé en ce qu'à l'ancre (26) est associé un ressort (37) qui précontraint l'ancre (26) dans une position où le cliquet (28) de l'ancre (26) n'est pas en prise avec la roue de blocage (31).
  7. Moyen de traction par câble selon la revendication 6, caractérisé en ce que le ressort (37) de précontrainte de l'ancre (26) permet, conjointement avec l'ancre (26), une adaptation en fréquence.
  8. Moyen de traction par câble 7, caractérisé en ce que l'agencement constitué du ressort (37) et de l'ancre (26) est adapté de façon que, à une vitesse de rotation normale du tambour à câble, l'ancre (26) suive le contour de la roue d'entraînement (30) sans décollement.
  9. Moyen de traction par câble selon la revendication 1, caractérisé en ce que l'organe palpeur (27) comprend un galet palpeur monté à rotation sur un axe de l'ancre (26).
  10. Moyen de traction par câble selon la revendication 1, caractérisé en ce que l'agencement est prévu de façon que, à une vitesse de rotation maximale normale du tambour à câble (2) majorée d'une tolérance admissible, l'ancre (26) reste constamment en prise avec la roue d'entraînement (31).
  11. Moyen de traction par câble selon la revendication 1, caractérisé en ce que le dispositif d'accouplement (23) comprend un câble Bowden ou une tringlerie.
  12. Moyen de traction par câble, caractérisé en ce que le dispositif de freinage (4) comprend un tambour de freinage (8) ou un disque de freinage accouplé de manière solidaire en rotation au tambour à câble (2) et au moins une mâchoire de freinage (9) ou un étrier de freinage.
  13. Moyen de traction par câble selon la revendication 12, caractérisé en ce que le dispositif de freinage (4) comporte un dispositif d'arrêt (38) permettant d'arrêter la mâchoire de freinage (9).
  14. Moyen de traction par câble selon la revendication 1, caractérisé en ce qu'à la courroie est associé un dispositif tendeur de courroie.
EP11707710.7A 2010-02-25 2011-02-11 Système de traction par câble pourvu d'un dispositif de freinage d'urgence Not-in-force EP2539269B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010009357A DE102010009357B4 (de) 2010-02-25 2010-02-25 Seilzug mit Notbremseinrichtung
PCT/IB2011/050583 WO2011104650A1 (fr) 2010-02-25 2011-02-11 Système de traction par câble pourvu d'un dispositif de freinage d'urgence

Publications (2)

Publication Number Publication Date
EP2539269A1 EP2539269A1 (fr) 2013-01-02
EP2539269B1 true EP2539269B1 (fr) 2015-08-12

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EP11707710.7A Not-in-force EP2539269B1 (fr) 2010-02-25 2011-02-11 Système de traction par câble pourvu d'un dispositif de freinage d'urgence

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Country Link
US (1) US9567196B2 (fr)
EP (1) EP2539269B1 (fr)
KR (1) KR101366518B1 (fr)
CN (1) CN102858675B (fr)
DE (1) DE102010009357B4 (fr)
ES (1) ES2546553T3 (fr)
RU (1) RU2505474C1 (fr)
TW (1) TWI532675B (fr)
WO (1) WO2011104650A1 (fr)

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Also Published As

Publication number Publication date
RU2505474C1 (ru) 2014-01-27
ES2546553T3 (es) 2015-09-24
DE102010009357A1 (de) 2011-09-08
WO2011104650A1 (fr) 2011-09-01
US9567196B2 (en) 2017-02-14
CN102858675A (zh) 2013-01-02
DE102010009357B4 (de) 2012-02-16
CN102858675B (zh) 2015-03-11
TW201217260A (en) 2012-05-01
TWI532675B (zh) 2016-05-11
KR101366518B1 (ko) 2014-02-25
US20150014613A1 (en) 2015-01-15
EP2539269A1 (fr) 2013-01-02
KR20130004580A (ko) 2013-01-11

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