EP4003896A1 - Appareil de levage - Google Patents

Appareil de levage

Info

Publication number
EP4003896A1
EP4003896A1 EP20708417.9A EP20708417A EP4003896A1 EP 4003896 A1 EP4003896 A1 EP 4003896A1 EP 20708417 A EP20708417 A EP 20708417A EP 4003896 A1 EP4003896 A1 EP 4003896A1
Authority
EP
European Patent Office
Prior art keywords
locking
disc
control
disk
contour
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.)
Granted
Application number
EP20708417.9A
Other languages
German (de)
English (en)
Other versions
EP4003896B1 (fr
EP4003896C0 (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 EP4003896A1 publication Critical patent/EP4003896A1/fr
Application granted granted Critical
Publication of EP4003896B1 publication Critical patent/EP4003896B1/fr
Publication of EP4003896C0 publication Critical patent/EP4003896C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 hoist in particular a lever hoist, usually uses round steel chains as a support or traction device and is used to lift, lower and pull loads.
  • the lifting movement can be generated by manual operation, compressed air or an electric motor.
  • the present invention particularly relates to a hand-operated lever hoist.
  • a lever-operated hoist is known from DE 41 05 050 C2, which is also referred to as a pull stroke or chain hoist.
  • the hoist has a carrying hook as the upper fastening element and a load hook as the lower stop element.
  • the upper fastening element and the lower stop element are via a Housing indirectly connected to one another.
  • the stop element is connected via a load chain as a traction mechanism to a traction mechanism drive, which is located in the housing of the hoist.
  • the traction mechanism 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 relocate or lash an object.
  • the traction drive includes a load pressure brake, a load chain wheel and a gear, the gear often being designed as a planetary gear.
  • the hand lever and the ratchet wheel of the ratchet mechanism sit at one end of a drive shaft which passes through the load pressure brake and the load chain wheel.
  • the gearbox At the other end of the drive shaft is the gearbox, which is then connected to the load chain wheel to transmit torque.
  • the load pressure brake is composed of a ratchet disc with recesses or teeth on its outer circumference, two friction elements, mostly friction discs or linings, located on both sides of the ratchet disc, and two pawls linked to the housing, which are pressed against the ratchet disc under the influence of ratchet springs .
  • the two friction elements enter into a frictional connection on the one hand with the ratchet wheel and on the other hand with a pressure washer or the ratchet wheel attached to the shaft.
  • the ratchet wheel is axially displaceable on a movement thread of the drive shaft.
  • the load pressure brake has the task of holding the load carried by the hoist at the respective height or position when the ratchet wheel is stationary. Then the ratchet wheel is pressed against the pressure disk via the ratchet wheel disk and the integrated friction elements.
  • the pawls are located in the circumferential recesses of the ratchet wheel. If the ratchet wheel is rotated in the lifting direction, the pawls slide over the teeth of the ratchet wheel until the ratchet wheel comes to a standstill. Then the pawls snap back into the recesses in the ratchet disk.
  • the ratchet wheel When lowering the load, the ratchet wheel turns in the opposite direction rotated, whereby it slides axially on the movement thread of the drive shaft and the frictional contact with the friction elements of the ratchet disk and the pressure disk is canceled.
  • the load can drop until the rotating shaft compensates for the axial play again.
  • EP 0 279 144 B1 includes a safety brake for a driven shaft in the prior art. This comprises a brake disk and a cam disk for a roller which can be pressed onto it by a release spring and which, when the shaft rotates too high, causes a pawl to engage in a toothed ring arranged on the shaft.
  • EP 3 395 746 A1 proposes a further safety device in the form of a safety brake which uses the centrifugal force of centrifugal elements to limit the speed.
  • the invention is based on the object of providing a lifting device that is improved in terms of safety and operational technology, in particular a lever hoist, in which an impermissible increase in the speed of the drive shaft is prevented.
  • a hoist in particular a lever hoist, comprises a housing in which a load chain wheel and a drive shaft that drives the load chain wheel via a transmission are rotatably mounted.
  • a drive, a load pressure brake and a safety brake are also provided.
  • a load chain can be moved via the load chain wheel.
  • the safety brake has a locking disc with ratchet teeth and a control disc with control cams and a catch hook.
  • the locking disk and the control disk can be rotated relative to one another, the rotation being limited by a rotation path limitation.
  • the catch hook is arranged to be pivotable.
  • the catch hook is two-legged and has a latch contour at a front end and a tactile contour at a rear end.
  • the catch hook is assigned to the locking disk and the control disk in such a way that the feeler contour, under the influence of a spring element, rests against the control disk, in particular the outer contour of the control disk, and slides along it when the control disk is rotated.
  • the pawl contour can be brought into locking engagement with a locking tooth of the locking disk.
  • the catching hook is guided with the tactile contour over the control disk and the pawl contour does not engage the locking disk.
  • the feeler contour of the catch hook lifts off the control disc or the control cam of the control disc and the pawl contour of the catch hook snaps into a ratchet tooth of the locking disc.
  • the locking disk is stopped while the control disk, which is arranged coaxially behind the locking disk, continues to rotate along a predetermined rotational path of the rotational path limitation until the rotational path is exhausted and the locking disk and the control disk lock against each other.
  • the rotational path limitation has at least one cam track and a stop body which can be displaced along the cam track. In the end position, i.e. after exhaustion of the rotational path between the locking disk and the control disk, the stop body comes to a stop at the end of the cam track.
  • the curved path is preferably formed by an elongated hole.
  • the elongated hole is formed in the control disk.
  • An elongated hole is preferably designed in an arc shape with a radius around the center of the control disk. It is particularly advantageous if several elongated holes are provided offset from one another on a pitch circle in the control disk. It is also possible, however, for the curved path to be formed in a groove. This can be provided in the control disk or in the locking disk.
  • the stop body is preferably a pin.
  • the stop pin or pins are preferably fixed in the locking disk and protrude from it in the direction of the control disk, engaging the elongated holes.
  • latching elements are incorporated between the locking disk and the control disk. These fix the locking disk and the control disk in the starting position or in the end position.
  • the locking elements are preferably formed by balls.
  • the locking elements are held in receptacles 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.
  • a plurality of ratchet teeth are advantageously arranged in a uniformly distributed manner on the circumference of the ratchet disk.
  • several control cams are provided evenly distributed on the circumference of the control disk.
  • the control cams are particular formed by the contour of the control disk itself.
  • the control disk is preferably configured triangularly with a rounded outer contour.
  • the control disk has a central connector provided with internal teeth. With the internal toothing, the control disk sits on a length section of the drive shaft provided with external toothing. The control disk with a central bearing section is positioned on the central connecting piece. The locking disk is secured on the socket by means of securing elements.
  • An advantageous practical embodiment provides that, in the starting position of the locking disk and control disk, the rear outer contour of the locking teeth is aligned with the outer contour of the control disk.
  • the control disk covers the adjacent flat side of the locking disk.
  • the catch hook of the catch brake is pivotably mounted on a bolt on a side plate that can be integrated into the housing.
  • the spring element is preferably a leg spring.
  • damping elements can be incorporated between the locking disc and the control disc in order to dampen the braking effect during emergency braking.
  • the unlocking mechanism preferably comprises a locking slide which is designed to block the locking disk while the control disk connected to the drive shaft is rotated in the lifting direction (clockwise) until the two disks are aligned with each other again in the starting position.
  • a backstop is provided, which allows the locking disk and the Prevents the control disc in its starting position. As a result, the safety brake remains in the locked state.
  • One embodiment of the backstop provides that pinch rollers are positioned in recesses in the locking disk. These are arranged and designed in such a way that the locking disk and control disk cannot be reset to their initial position.
  • the hoist according to the invention can be used in a wide variety of applications. It can be used in any application with reversing loads, for example in overhead line construction or for personal security.
  • the hoist is compact and lightweight.
  • the additional safety function via the safety brake is implemented with just a few parts.
  • the mechanics require an active movement, so that if the spring is no longer available, the pawls of the load pressure brake are stuck, etc., the safety brake is triggered.
  • the safety brake locks automatically. As a result, the catch hook always remains in engagement even if the load oscillates.
  • FIG. 1 a lifting device according to the invention in the form of a lever block in a longitudinal section;
  • FIG. 2 shows the lever hoist in an exploded view of its components
  • FIG. 3 shows a side view of part of the lever block
  • Figure 4 is a perspective view of the safety brake
  • FIG. 5 shows a perspective view of the locking disk and the control disk of the safety brake
  • FIG. 6 components of the safety brake in an explosion-like exploded view
  • FIG. 7 shows a view of the representation in FIG. 5 from above;
  • FIG. 8 shows a section through the illustration of FIG. 7 along the line
  • FIG. 9 shows a section through the illustration of FIG. 7 along the line
  • FIG. 10 shows the illustration corresponding to FIG. 5 in a view from below
  • FIG. 11 the opened lever hoist with a view of the area of
  • FIG. 12 shows the representation corresponding to FIG. 11 in one
  • Figure 13 is a view of the safety brake of the lever train in a first
  • FIG. 14 the safety brake in a second operating situation
  • FIG. 15 the safety brake in a third operating situation
  • FIG. 16 shows the safety brake in a fourth operating situation
  • FIG. 17 shows the illustration of the safety brake during an unlocking process for resetting the locking disc and control disc to their starting position
  • Figures 18 to 23 a second embodiment of a safety brake with a
  • FIGS 1 and 2 show a hoist according to the invention in the form of a manually operated lever hoist 1.
  • a component of the lever hoist 1 is a housing 2, which is composed of several housing parts 3, 4 and side plates 5, 6 and spacer frame 7.
  • the lever hoist 1 has a support hook 8 as an upper fastening element and a load hook 9 as a lower stop element.
  • the support hook 8 and the load hook 9 are indirectly connected to one another via the housing 2.
  • the load hook 9 is attached to one end of a load chain 10. At the other end of the load chain 10, a chain end piece 11 is provided.
  • the load chain 10 can be moved via a traction mechanism.
  • the traction drive essentially comprises a drive 12 with a hand lever 13, a ratchet wheel 14 and a switchable ratchet mechanism 15, a load pressure brake 16, a load chain wheel 17 and a gear 18.
  • the hand lever 13 and the ratchet wheel 14 of the ratchet mechanism 15 sit at one end 19 of a Drive shaft 20, which passes through the load pressure brake 16 and the load chain wheel 17.
  • At the other end 21 of the drive shaft 20 is the transmission 18, which is connected to the load chain wheel 17 in a torque-transmitting manner.
  • a hand wheel 22 is used to move the ratchet wheel 14 axially on the drive shaft 20 in order to actuate a freewheel mechanism 23 of the lever hoist 1.
  • the load pressure brake 16 has a ratchet wheel disk 24 provided with teeth on its outer circumference.
  • the ratchet disk 24 is provided on both sides with friction elements 25 in the form of friction linings.
  • the load pressure brake 16 has two locking pawls 26 which are pivotably mounted on the side plate 6 in the housing 2 and which are pressed against the locking wheel disk 24 under the influence of locking hook springs 27.
  • the load pressure brake 16 includes a pressure disk 28 on which the ratchet disk 24 is mounted.
  • the ratchet wheel 14 is axially displaceable on a movement thread 29 of the drive shaft 20.
  • FIG. 3 shows the lever block 1 with the ratchet wheel 14, hand lever 13 and hand wheel 22 removed.
  • the load pressure brake 16 has the task of holding the load carried by the lever hoist 1 when the ratchet wheel 14 is stationary. Then the ratchet wheel 14 is pressed against the pressure disk 28 via the ratchet wheel disk 24 and the integrated friction elements 25.
  • the pawls 26 are located in the circumferential recesses of the ratchet wheel 24. The ratchet wheel 14 is in the lifting direction rotated, the pawls 26 slide over the teeth of the ratchet disk 24 until the ratchet 14 comes to a standstill. Then the pawls 26 snap back into the recess of the ratchet wheel 24.
  • the ratchet wheel 14 When the load is lowered, the ratchet wheel 14 is rotated in the opposite direction, whereby it slides axially on the movement thread 29 of the drive shaft 20 and the frictional contact with the friction elements 25 of the ratchet wheel 24 and the Pressure disc 28 is canceled. The load can then drop until the rotating drive shaft 20 compensates for the axial play again.
  • the lever hoist 1 has a safety brake 30, 31.
  • the safety brake 30, 31 has the task of performing emergency braking in extreme situations in which the drive shaft 20 can rotate at such a high speed that the load pressure brake 16 no longer engages due to inertia.
  • a safety brake 30 and its mode of operation are described with reference to FIGS. 4 to 17.
  • a second embodiment of a safety brake 31 is explained with reference to FIGS. Components or component components that correspond to one another are provided with the same reference symbols.
  • the safety brake 30, 31 is arranged coaxially below or behind the load pressure brake 16 in the direction of the load chain wheel 17.
  • 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, a plurality of locking teeth 33, three in the exemplary embodiment, are arranged 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 connector 38 provided with internal teeth 37, on which the locking disk 32 is positioned with a central bearing section 39 and secured in position by securing elements 40, 41.
  • the control disk 34 and, together with the control disk 34, the locking disk 32 are held on a threaded section 43 of the drive shaft 20 provided with an external toothing 42 via the connecting piece 38 and the internal toothing 37.
  • the catch hook 36 is pivotably arranged on the side plate 5 of the lever hoist 1. With the incorporation of a spring element 44 in the form of a leg spring, the catch hook 36 is mounted on a bolt 45 on the side plate 5 and secured by a locking ring 46. The mounting of the catch hook 36 on the bolt 45 is in the middle length range of the catch hook 36, so that the catch hook 36 is mounted like a rocker.
  • the locking disk 32 and the control disk 34 can be rotated relative to one another.
  • the rotation of locking disk 32 and control disk 34 relative to one another is limited by a rotation limit 47.
  • the rotational path limitation 47 comprises a cam track 48 which is formed in an elongated hole 49 in the shape of a circular arc segment 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 uniformly offset on a pitch circle in the control disk 34. Correspondingly, three pins are incorporated as stop bodies 50 in assembly openings 51 of the locking disk 32.
  • the stop bodies 50 protrude in the direction of the control disk 34 with respect to the locking disk 32 and engage in the elongated holes 49.
  • the rotational path limitation 47 enables the locking disk 32 to be rotated by 45 ° with respect to the control disk 34.
  • Latching elements 52 in the form of steel balls are incorporated between the locking disk 32 and the control disk 34.
  • the locking elements 52 fix the locking disk 32 and the control disk 34 in the initial position or in the end position after rotation.
  • the latching elements 52 are held in receptacles 53 in the control disc 34 and contact spherical segment-shaped latching surfaces 54 in the locking disc 32 and cooperate with them in a counter-bearing and movement-inhibiting manner.
  • the catch hook 36 has a pawl contour 56 at a front end 55.
  • the pawl contour 56 has a pointed catch tooth 57 with a front catch flank 58, which is configuratively adapted to a front locking flank 59 of a locking tooth 33 of the locking disk 32.
  • a tactile contour 61 is formed on the catch hook 36 at the rear end 60.
  • the rear end 60 of the catch hook 36 is rounded.
  • the spring element 44 has the effect that the pawl contour 56 lies outside the outer circumference of the locking disk 32 during normal operation. In normal operation, the catch hook 36 slides with the rear feeler contour 61 along the control disk 34.
  • the front pawl contour 56 is raised.
  • the tracer contour 61 of the catch hook 36 lifts off the control disk 34 or the control cam 35 due to the inertia and the acting acceleration forces.
  • the catch hook 36 tilts and rotates around the bolt 35 in the locking disk 32.
  • the pawl contour 56 of the catch hook 36 snaps into a locking tooth 33 of the locking disk 32 and there comes to rest with the catching flank 58 on the locking flank 59.
  • the locking disk 32 is stopped while the control disk 34 arranged coaxially behind it continues to rotate along the predetermined rotational path of the rotational path limiter 47. The rotation takes place until the stop bodies 50 come to the stop at the end 62 of the elongated holes 49 located in the direction of rotation.
  • the locking disk 32 and the control disk 34 are then blocked against one another. In this way, a positive connection between the drive shaft 20 and the lever block 1 is established. Any further spinning of the load chain wheel 17 and the load chain 10 will stop.
  • FIG. 11 shows a normal situation of load pressure brake 16 and safety brake 30.
  • the pawls 26 engage in the ratchet disk 24 and hold the load.
  • Figure 12 shows a problem situation.
  • the pawls 26 of the load pressure brake 16 are not free to move.
  • the pawls 26 do not engage the ratchet disk 24.
  • a load cannot be held.
  • Figures 13 and 14 show the safety brake 30 each in a normal situation or starting position.
  • the locking disk 32 and the control disk 34 are in alignment such that the rear outer contour of the locking teeth 33 coincides with the outer contour of the control disk 32.
  • the tactile contour 61 of the catch hook 36 is pressed against the outer contour of the control disk 34 by the spring force of the leg spring and slides along the control cam 35.
  • the tactile contour 61 lies both in the top dead center of the control disk 34 (FIG. 13) and in the bottom dead center of the control disk 34 ( 14) on a control cam 35.
  • the front pawl contour 56 of the catch hook 36 is lifted out of the effective area of the locking disk 32 or its locking teeth 33.
  • the feeler contour 61 of the safety hook 36 is accelerated outward and lifts off the control disk 34.
  • the front fang 57 of the pawl contour 56 snaps into the locking disk 32 (see FIG. 15) and comes to rest with its front flank 58 blocking the locking flank 59 of a locking tooth 33 (see FIG. 16).
  • the control disk 34 rotates, driven by the load, by 45 ° in the counterclockwise direction (arrow P1) and thereby locks the ratchet wheel 14. This effect is self-reinforcing; H. the catch hook 36 drops the deeper the more the tactile contour 61 on the opposite side is raised by the control disk 34.
  • An unlocking device 63 is provided in order to release the blocking of the safety brake 30 and to set the control disk 34 and the locking disk 32 back to their initial aligned state.
  • This comprises a slide 64 for actuating the unlocking device 63 and a blocking body 66 under the influence of a tension spring 65.
  • actuating the slide 64 (arrow P2), it blocks the locking disc 32 with the blocking body 66 and holds it so that the locking disc 32 is prevented from rotating while the control disk 34 is actuated in the lifting direction (clockwise) (arrow P3) via the hand wheel 22 or the hand lever 13. In this way, the locking disk 32 and the control disk 34 are displaced relative to one another and brought into their initial aligned position.
  • FIGS. 18 to 23 show a second embodiment of a safety brake 31.
  • this has a locking disk 32 with locking teeth 33 and a control disk 34 with locking cams 35 and a safety catch (not shown in FIGS. 18 to 23).
  • the catch hook corresponds to the previous explanation. The same applies to the rotational travel limitation and the function of the safety brake 31.
  • a backstop 67 is provided for the safety brake 31.
  • the backstop 67 prevents the locking disk 32 and control disk 34 from rotating into their starting position after the safety brake 31 has triggered, that is to say is in its blocked state.
  • the backstop 67 has recesses 68 arranged offset on a pitch circle in the locking disk 32. Pinch rollers 69 are received there.
  • the rear wall 70 of a pocket-shaped recess 68 runs obliquely, so that the recess 68 tapers in the counterclockwise direction. This creates a wedge effect between the locking disk 32 and the control disk 34 via the pinch rollers 69, so that the backstop 67 prevents the rotation of locking disk 32 and control disk 34 relative to one another in a frictional manner.
  • a shear pin 71 is integrated into the safety brake 31.
  • the shear pin 71 is driven through an assembly opening 72 in the locking disk 32 into an assembly opening 73 in the control disk 34.
  • the shear pin 71 prevents unintentional release of the safety brake 31, for example when pulling it out by hand.
  • the shear pin 71 secures the safety brake 31 in the starting position. Only when a certain threshold value is exceeded when the safety brake 31 is blocked, the shear pin 71 is sheared off and the safety brake 31 can effect an emergency braking.

Landscapes

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

Abstract

L'invention concerne un appareil de levage, en particulier un palan à levier (1). Ce dernier présente un carter (2) dans lequel une roue de chaîne de levage (17) et un arbre d'entraînement (20) entraînant la roue de chaîne de levage (17) par l'intermédiaire d'une transmission (18) sont montés rotatifs ainsi qu'un mécanisme d'entraînement (12), un frein actionné par la charge (16) et un frein parachute (30). Une chaîne de levage (10) peut être déplacée par l'intermédiaire de la roue de chaîne de levage (17). Le frein parachute (30) exerce un freinage d'urgence en cas de vitesse de rotation excessive de l'arbre d'entraînement (20). Le frein parachute (30) présente un disque de blocage (32) doté de dents de blocage (33) et un disque de commande (34) doté de cames de commande (35) ainsi qu'un crochet parachute (36). Le disque de blocage (32) et le disque de commande (34) peuvent tourner de manière limitée l'un par rapport à l'autre. La rotation est limitée par une limitation de parcours de rotation (47). Le crochet parachute (36) est monté pivotant et présente à une extrémité avant (55) un contour de cliquet (56) et à une extrémité arrière (60), un contour détecteur (61). Le contour détecteur (61) repose sur le disque de commande, sous l'effet de l'action d'un élément élastique (44). Lorsqu'une vitesse de rotation définie passe au-dessus d'un seuil, le contour détecteur (61) soulève le crochet parachute (36) du disque de commande (34). Le contour de cliquet (56) se tourne vers le disque de blocage (32) et vient s'engrener avec effet bloquant avec une dent de blocage (33) du disque de blocage (32).
EP20708417.9A 2019-07-24 2020-02-13 Appareil de levage Active EP4003896B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019120036.9A DE102019120036A1 (de) 2019-07-24 2019-07-24 Hebezeug
PCT/DE2020/100101 WO2021013286A1 (fr) 2019-07-24 2020-02-13 Appareil de levage

Publications (3)

Publication Number Publication Date
EP4003896A1 true EP4003896A1 (fr) 2022-06-01
EP4003896B1 EP4003896B1 (fr) 2023-06-28
EP4003896C0 EP4003896C0 (fr) 2023-06-28

Family

ID=69740073

Family Applications (2)

Application Number Title Priority Date Filing Date
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

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20710033.0A Active EP4003897B1 (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) CN114174210B (fr)
AT (2) AT17647U1 (fr)
CA (2) CA3146206A1 (fr)
DE (3) DE102019120036A1 (fr)
ES (2) ES2952196T3 (fr)
PL (2) PL4003897T3 (fr)
WO (2) WO2021013286A1 (fr)
ZA (2) ZA202200895B (fr)

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Publication number Priority date Publication date Assignee Title
DE102019120036A1 (de) 2019-07-24 2021-01-28 Columbus Mckinnon Industrial Products Gmbh Hebezeug
US20240059533A1 (en) * 2020-12-17 2024-02-22 Columbus Mckinnon Industrial Products Gmbh Lever hoist
CN113071720B (zh) * 2021-03-24 2022-08-30 哈尔滨工业大学 一种工具包转移绳索缓释装置
CN116161577B (zh) * 2023-03-06 2025-10-28 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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CA3164748C (fr) 2024-11-05
WO2021013286A1 (fr) 2021-01-28
CN114174211B (zh) 2023-07-18
CA3153687A1 (fr) 2021-01-28
AT17646U1 (de) 2022-10-15
CA3146206A1 (fr) 2021-01-28
EP4003897A1 (fr) 2022-06-01
DE202020106349U1 (de) 2020-11-23
WO2021013285A1 (fr) 2021-01-28
US12006190B2 (en) 2024-06-11
ZA202200895B (en) 2023-09-27
ES2952011T3 (es) 2023-10-26
JP2022542244A (ja) 2022-09-30
EP4003896B1 (fr) 2023-06-28
CN114174210A (zh) 2022-03-11
DE102019120036A1 (de) 2021-01-28
PL4003896T3 (pl) 2023-10-02
EP4003897C0 (fr) 2023-06-28
JP2022542856A (ja) 2022-10-07
US11999600B2 (en) 2024-06-04
PL4003897T3 (pl) 2023-10-09
CN114174210B (zh) 2023-06-23
CN114174211A (zh) 2022-03-11
US20220274813A1 (en) 2022-09-01
JP7232378B2 (ja) 2023-03-02
EP4003897B1 (fr) 2023-06-28
EP4003896C0 (fr) 2023-06-28
US20220242704A1 (en) 2022-08-04
ES2952196T3 (es) 2023-10-30
DE202020106350U1 (de) 2020-11-23
JP7295331B2 (ja) 2023-06-20
ZA202200896B (en) 2023-06-28
CA3164748A1 (fr) 2021-01-28

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