EP4003897B1 - Appareil de levage - Google Patents

Appareil de levage Download PDF

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Publication number
EP4003897B1
EP4003897B1 EP20710033.0A EP20710033A EP4003897B1 EP 4003897 B1 EP4003897 B1 EP 4003897B1 EP 20710033 A EP20710033 A EP 20710033A EP 4003897 B1 EP4003897 B1 EP 4003897B1
Authority
EP
European Patent Office
Prior art keywords
locking
disc
lifting gear
gear according
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.)
Active
Application number
EP20710033.0A
Other languages
German (de)
English (en)
Other versions
EP4003897A1 (fr
EP4003897C0 (fr
Inventor
Detlef Struck
Wolfram SCHNEEBECK
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.)
Columbus McKinnon Industrial Products GmbH
Original Assignee
Columbus McKinnon Industrial Products GmbH
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 Columbus McKinnon Industrial Products GmbH filed Critical Columbus McKinnon Industrial Products GmbH
Publication of EP4003897A1 publication Critical patent/EP4003897A1/fr
Application granted granted Critical
Publication of EP4003897C0 publication Critical patent/EP4003897C0/fr
Publication of EP4003897B1 publication Critical patent/EP4003897B1/fr
Active 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
    • B66D1/04—Driving gear manually operated
    • B66D1/06—Safety cranks for preventing unwanted crank rotation and subsequent lowering of the loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
    • B66D3/14—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable lever operated
    • 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
    • B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
    • 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
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/05—Brakes with mechanisms with latches for hoists or similar devices

Definitions

  • the invention relates to a hoist, in particular a lever hoist, according to the features in the preamble of claim 1.
  • a lever-operated hoist which is also referred to as a pull hoist or chain hoist.
  • the hoist has a lifting hook as the upper fastening element and a load hook as the lower stop element.
  • the upper fastener and the lower stop member are a Housing indirectly connected.
  • the stop element is connected via a load chain as a traction means to a traction drive, which is located in the housing of the hoist.
  • the traction drive can be set in rotation within the housing by a pivoting movement of a hand lever.
  • the lever arm engages in a transmission device, which in turn is connected to the traction drive. In this way it is possible to move or tie down an object.
  • the unlocking device includes a reset button and a blocking body designed to block the locking disc while the control disc connected to the drive shaft is rotated in the stroke (clockwise) direction until the two discs are again aligned in the starting position.
  • the blocking body can be brought into an unlocked position by actuating the reset button.
  • the unlocked position the blocking disk comes into contact with the blocking body and is held by it in such a way that the control disk can be rotated relative to the blocking disk and rotated into the starting position.
  • the unlocking makes it possible to unlock the safety brake from the outside without having to disassemble the device.
  • the safety brake can be completely reset to its normal operating state, ie the standby mode, in the starting position of the locking disk and control disk.
  • Unlocking is initiated by pressing the reset button. This brings the blocking body into the unlocked position.
  • the safety brake is turned clockwise using the hand wheel until the locking disc comes into contact with the blocking body.
  • the reset button is also pressed until it is in the unlocked position.
  • the safety brake can then be turned anti-clockwise using the hand wheel until the locking tooth of the locking disk is in contact with the tooth flank of the tooth contour of the blocking body.
  • the safety brake is then turned further counterclockwise by 45° using the handwheel until the locking disk and the control disk are completely interlocked. In this position, the safety brake engages noticeably.
  • the reset button springs back automatically or is manually released.
  • the tension spring pivots the reset button and the blocking body back into the starting position.
  • the safety brake is now locked. After a further rotation of a maximum of 45° counterclockwise, the catch hook of the safety brake would automatically take over the load. Further movement, in particular lowering of a load, is then no longer possible.
  • the cam track is preferably formed by a slot.
  • the elongated hole is formed in the control disk.
  • a slot is preferably arcuate with a radius around the center of the control disk. It is particularly advantageous to provide a number of elongated holes offset from one another on a pitch circle in the control disk. But it is also possible that the Cam track is formed in a groove. This can be provided in the control disk or in the locking disk.
  • a further embodiment provides that latching elements are integrated between the locking disk and the control disk. These fix the locking disk and the control disk in the initial position and in the end position.
  • the locking elements are preferably formed by balls.
  • the locking elements are held in recordings and interact with locking surfaces.
  • An advantageous embodiment provides that the receptacles are in the control disk and the locking surfaces are formed in the locking disk.
  • ratchet teeth are distributed evenly around the circumference of the ratchet disk.
  • control cams are distributed evenly on the circumference of the control disk.
  • the control cams are formed in particular by the contour of the control disk itself.
  • the control disc is preferably configured in a triangular shape with a rounded outer contour.
  • the safety brake 30, 31 has a locking disk 32 with locking teeth 33 and a control disk 34 with control cams 35 and a catch hook 36. On the circumference of the locking disk 32 are several, three in the embodiment, ratchet teeth 33 are evenly distributed.
  • the control disk 34 has a triangular configuration with control cams 35 that are rounded on its circumference.
  • the control disk 34 has a central socket 38 with internal teeth 37, on which the locking disk 32 has a central bearing section 39 positioned and secured in position by securing elements 40, 41.
  • the control disk 34 and the locking disk 32 with the control disk 34 are held on a threaded section 43 of the drive shaft 20 provided with external teeth 42 via the connecting piece 38 and the internal toothing 37 .
  • the locking disk 32 and the control disk 34 can be rotated in opposite directions.
  • the rotation of locking disk 32 and control disk 34 relative to one another is limited by a limiter 47 of rotational travel.
  • the rotary travel limiter 47 includes a cam track 48 which is formed in a slot 49 in the shape of a segment of a circular arc in the control disk 34 .
  • a stop body 50 in the form of a pin can be displaced along the cam track 48 . It can be seen that three elongated holes 49 are arranged in the control disk 34 in an evenly offset manner on a pitch circle. Correspondingly, three pins are incorporated as stop bodies 50 in assembly openings 51 of locking disk 32 .
  • the figure 11 shows a normal situation of load pressure brake 16 and safety brake 30.
  • the pawls 26 engage in the ratchet wheel disc 24 and hold the load.
  • figure 12 indicates a problem situation.
  • the pawls 26 of the load pressure brake 16 are not free.
  • the pawls 26 do not engage the ratchet disc 24 .
  • a load cannot be held. It can become dangerous Excessive speed increase against the direction of pull of the lever hoist 1 is associated with a rattling of the load chain 10.
  • the tactile contour 61 of the catch hook 36 is accelerated outwards and lifts off the control disk 34.
  • the front catch tooth 57 of the pawl contour 56 snaps into the locking disc 32 (see Fig figure 15 ) and comes to rest with its front catch flank 58 blocking on the locking flank 59 of a locking tooth 33 (see figure 16 ).
  • the control disk 34 driven by the load, continues to rotate by 45° counterclockwise (arrow P1) and thereby locks the ratchet wheel 14. This effect is self-reinforcing, i.e. the catch hook 36 falls in the deeper the stronger the tactile contour 61 is raised on the opposite side by the control disc 34.
  • Lever hoist 1 shown has a safety brake 31, which corresponds to the safety brake 30 explained above in terms of structure and function.
  • the safety brake 31 has a locking disc 32 with locking teeth 33 and a control disc 34 with locking cams 35 and a catch hook 36.
  • the lever hoist 1 has an unlocking mechanism 63 .
  • the unlocking device 63 has a reset button 64 and a blocking body 66 which functionally form a unit 67 .
  • the reset button 64 and the blocking body 66 are connected to one another in a non-positive and positive manner.
  • the unlocking mechanism 63 can also be designed without a catch 70 and the catch function.
  • the reset button 64 is then manually actuated and held to perform an unlocking operation.
  • the representation of figure 19 shows the safety brake 31 in the locked state.
  • the safety brake 31 has been triggered in release mode after a load was lowered too quickly or after the load chain was manually pulled too quickly in the direction of the load.
  • the catch tooth 57 of the catch hook 36 engages the locking disc 32 (point S).
  • the locking disk 32 and the control disk 34 are crossed against each other.
  • the catch hook 36 is prevented from falling out (point N) by the contour of the control disk 34 rotated by 45°.
  • the unlocking device 63 is actuated.
  • the reset button 64 is pressed (arrow P4).
  • the reset button 64 is moved inwardly into the housing 2 .
  • the blocking body 66 is brought into an unlocked position E by the reset button 64 .
  • the latching body 71 of the latch 70 is moved with the reset button 64 and latches in the unlocking position E in the second latching receptacle 74 located on the inside.
  • the reset button 64 and with it the blocking body 66 is secured in the unlocked position E.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Retarders (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Claims (17)

  1. Appareil de levage, en particulier palan à levier (1), comprenant un boîtier (2) dans lequel une roue à chaîne de levage (17) et un arbre d'entraînement (20) entraînant la roue à chaîne de levage (17) par l'intermédiaire d'un engrenage (18) sont montés de manière rotative, ainsi qu'un entraînement (12), un frein de pression de charge (16) et un frein de capture (30, 31), dans lequel une chaîne de levage (10) peut être déplacée par l'intermédiaire de la roue à chaîne de levage (17), caractérisé en ce que le frein de capture (30, 31) présente un disque de blocage (32) avec des dents de blocage (33) et un disque de commande (34) avec des cames de commande (35) ainsi qu'un crochet de capture (36), dans lequel le disque de blocage (32) et le disque de commande (34) peuvent tourner l'un par rapport à l'autre, dans lequel la rotation est limitée par une limitation de course de rotation (47) et dans lequel le crochet de capture (36) est disposé de manière pivotante et présente à une extrémité avant (55) un contour de cliquet (56) et à une extrémité arrière (60) un contour de palpage (61), dans lequel le contour de palpage (61) s'applique contre le disque de commande (34) sous l'influence d'un élément de ressort (44) et le contour de cliquet (56) peut être amené en prise de blocage avec une dent de blocage (33) du disque de blocage (32) et un déverrouillage (63) est prévu pour remettre le disque de blocage (32) et le disque de commande (34) dans leur position initiale, dans lequel le déverrouillage (63) présente un bouton de remise à zéro (64) et un corps de blocage (66), dans lequel le corps de blocage (66) peut être amené, par actionnement du bouton de remise à zéro (64), dans une position de déverrouillage (E), dans laquelle le disque de blocage (32) est maintenu par le corps de blocage (66) de sorte que le disque de commande (34) peut tourner par rapport au disque de blocage (32) et être transféré dans la position initiale.
  2. Appareil de levage selon la revendication 1, caractérisé en ce que la limitation de course de rotation (47) présente au moins une trajectoire de courbe (48) et un corps de butée (50) qui peut être déplacé le long de la trajectoire de courbe (48).
  3. Appareil de levage selon la revendication 2, caractérisé en ce que la trajectoire de courbe (48) est formée par un trou oblong (49) ou une rainure dans le disque de commande (34) ou le disque de blocage.
  4. Appareil de levage selon la revendication 2 ou 3, caractérisé en ce que le corps de butée (50) est un goupille.
  5. Appareil de levage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que des éléments d'encliquetage (52) sont incorporés entre le disque de blocage (32) et le disque de commande (34).
  6. Appareil de levage selon l'une quelconque des revendications 1 à 5, caractérisé en ce que plusieurs dents de blocage (33) sont réparties uniformément sur la périphérie du disque de blocage (32).
  7. Appareil de levage selon l'une quelconque des revendications 1 à 6, caractérisé en ce que plusieurs cames de commande (35) sont réparties uniformément sur la périphérie du disque de commande (34).
  8. Appareil de levage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le disque de commande (34) présente une tubulure centrale (38) pourvue d'une denture intérieure (37), sur laquelle le disque de blocage (32) est positionné avec une section de palier centrale (39) et est bloqué en position par un élément de blocage (40, 41).
  9. Appareil de levage selon l'une quelconque des revendications 1 à 8, caractérisé en ce que dans la position initiale du disque de blocage (32) et du disque de commande (34), le contour extérieur arrière des dents de blocage (33) est aligné avec le contour extérieur du disque de commande (34).
  10. Appareil de levage selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le crochet de capture (36) est monté sur une plaque latérale (5, 6) pouvant être intégrée dans le boîtier (2).
  11. Appareil de levage selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le bouton de remise à zéro (64) est monté de manière rotative.
  12. Appareil de levage selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le bouton de remise à zéro (64) coopère avec un ressort de traction (65).
  13. Appareil de levage selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le bouton de remise à zéro (64) et le corps de blocage (66) forment un ensemble.
  14. Appareil de levage selon l'une quelconque des revendications 1 à 13, caractérisé en ce que le déverrouillage (63) présente un cran d'arrêt (70), lequel bloque le bouton de remise à zéro (64) et/ou le corps de blocage (66) dans la position de déverrouillage (E).
  15. Appareil de levage selon la revendication 14, caractérisé en ce que le cran d'arrêt (70) présente un corps d'arrêt (71), lequel s'engage dans un logement d'arrêt (74) dans la position de déverrouillage (E), dans lequel le corps d'arrêt (71) peut être déplacé hors du logement d'arrêt (74) dans la position initiale du disque de blocage (32) et du disque de commande (34).
  16. Appareil de levage selon l'une quelconque des revendications 1 à 14, caractérisé en ce que le corps de blocage (66) présente une surface de butée (75) sur laquelle le disque de blocage (32) s'appuie par un flanc extérieur (76) d'une dent de blocage (33) dans la position de déverrouillage (E).
  17. Appareil de levage selon l'une quelconque des revendications 1 à 15, caractérisé en ce que le corps de blocage (66) présente un contour de dent (77) avec un flanc de dent (78), lequel peut être mis en prise avec une dent de blocage (33) du disque de blocage (32).
EP20710033.0A 2019-07-24 2020-02-13 Appareil de levage Active EP4003897B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019120036.9A DE102019120036A1 (de) 2019-07-24 2019-07-24 Hebezeug
PCT/DE2020/100100 WO2021013285A1 (fr) 2019-07-24 2020-02-13 Appareil de levage

Publications (3)

Publication Number Publication Date
EP4003897A1 EP4003897A1 (fr) 2022-06-01
EP4003897C0 EP4003897C0 (fr) 2023-06-28
EP4003897B1 true EP4003897B1 (fr) 2023-06-28

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EP20708417.9A Active EP4003896B1 (fr) 2019-07-24 2020-02-13 Appareil de levage
EP20710033.0A Active EP4003897B1 (fr) 2019-07-24 2020-02-13 Appareil de levage

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EP20708417.9A Active EP4003896B1 (fr) 2019-07-24 2020-02-13 Appareil de levage

Country Status (11)

Country Link
US (2) US11999600B2 (fr)
EP (2) EP4003896B1 (fr)
JP (2) JP7295331B2 (fr)
CN (2) CN114174211B (fr)
AT (2) AT17647U1 (fr)
CA (3) CA3153687A1 (fr)
DE (3) DE102019120036A1 (fr)
ES (2) ES2952011T3 (fr)
PL (2) PL4003896T3 (fr)
WO (2) WO2021013285A1 (fr)
ZA (2) ZA202200896B (fr)

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DE102019120036A1 (de) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hebezeug
EP4263414A1 (fr) * 2020-12-17 2023-10-25 Columbus Mckinnon Industrial Products GmbH Palan à levier
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CN116161577A (zh) * 2023-03-06 2023-05-26 中山市罗顿智能科技有限公司 顶升机及其控制方法

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Publication number Publication date
US20220274813A1 (en) 2022-09-01
AT17647U1 (de) 2022-10-15
US11999600B2 (en) 2024-06-04
PL4003897T3 (pl) 2023-10-09
JP2022542244A (ja) 2022-09-30
JP7295331B2 (ja) 2023-06-20
PL4003896T3 (pl) 2023-10-02
EP4003896C0 (fr) 2023-06-28
EP4003896A1 (fr) 2022-06-01
WO2021013285A1 (fr) 2021-01-28
CN114174210A (zh) 2022-03-11
ES2952196T3 (es) 2023-10-30
US20220242704A1 (en) 2022-08-04
ZA202200895B (en) 2023-09-27
JP2022542856A (ja) 2022-10-07
JP7232378B2 (ja) 2023-03-02
EP4003897A1 (fr) 2022-06-01
WO2021013286A1 (fr) 2021-01-28
CA3164748A1 (fr) 2021-01-28
CN114174211B (zh) 2023-07-18
ES2952011T3 (es) 2023-10-26
CA3146206A1 (fr) 2021-01-28
EP4003897C0 (fr) 2023-06-28
EP4003896B1 (fr) 2023-06-28
CN114174211A (zh) 2022-03-11
ZA202200896B (en) 2023-06-28
DE202020106349U1 (de) 2020-11-23
DE202020106350U1 (de) 2020-11-23
US12006190B2 (en) 2024-06-11
AT17646U1 (de) 2022-10-15
CA3153687A1 (fr) 2021-01-28
DE102019120036A1 (de) 2021-01-28
CN114174210B (zh) 2023-06-23

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