EP2316532B1 - Abseiling device with wind function - Google Patents
Abseiling device with wind function Download PDFInfo
- Publication number
- EP2316532B1 EP2316532B1 EP10008430.0A EP10008430A EP2316532B1 EP 2316532 B1 EP2316532 B1 EP 2316532B1 EP 10008430 A EP10008430 A EP 10008430A EP 2316532 B1 EP2316532 B1 EP 2316532B1
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- European Patent Office
- Prior art keywords
- gear wheel
- sheave
- pawl
- housing
- state
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- 230000007246 mechanism Effects 0.000 claims description 57
- 230000005540 biological transmission Effects 0.000 claims description 17
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
- A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0093—Fall arrest reel devices
Definitions
- the present invention relates to a descender with a winch device, a rotatably mounted main axis on which a pulley for slip-proof guiding a traction means is rotatably disposed, and a force-transmitting connected to the pulley Abseilvorraum which formed to hold a constant abseiling of a hanging on the traction load
- the winch device comprises an actuator connected to the sheave for manually rotating the sheave via a power transmission path, wherein at least one ratchet device is disposed in a force transmission path between the actuator of the winch device and the sheave, the ratchet device at least between a first state and a second state is switchable, wherein in the first state of the ratchet device in a first direction of rotation of the actuating device on the respective ratchet before direction is force-transmitting connected to the sheave and in an opposite second direction of rotation of the actuator this is freely rotatable relative to the pulley, wherein the
- a descender with winch function which is a rotatably mounted in both directions leadership role for slip-proof management of a traction device, a transmission gear with centrifugal brake whose large gear is mounted torque safe on a common shaft with the guide roller, and one on the drive shaft of the small gear of the transmission gear engaging hand crank for manual operation of the winch function comprises.
- the common shaft of leadership and large gear is positively locked. This Verrieglung example, by means of a gun.
- the hand crank has a handle.
- the handle can be folded into the housing of the hand crank, so that in the Abseilvorides the handle does not protrude from the contour of the hand wheel, which is a risk of injury or relevant in view of the possible high speeds risk of causing an imbalance to be avoided.
- this device has the disadvantage that it can easily lead to operating errors if it is forgotten before abseiling to fold the handle.
- pamphlet WO 92/07626 A1 relates to a collecting device with a drum on which a rope is arranged, wherein the drum is provided with a brake which automatically stops the drum when the drum exceeds a predetermined unwinding speed.
- a winch mechanism is provided to selectively rotate the drum for either lifting or lowering a load.
- the winch mechanism cooperates with a braking means comprising a permanent friction brake and a one-way torque clutch.
- the winch mechanism prevents unwinding of the drum.
- the winch mechanism includes a ratchet device with lever arm, which is mechanically connected via a square axle with gear non-positively via an external toothing on the drum with this.
- the square axle is displaced in the axial direction, so that the gear is disengaged from the external teeth on the drum.
- the ratchet device is switchable between two states, wherein in a first state, the lever arm rotates the drum in one direction and in the other state in the other direction, so that the drum at a back and herschwenkenden or oscillating movement of the lever arm selectively performs a winding or unwinding.
- the square axle is moved in the axial direction, wherein a meshing engagement between the gear and the external teeth on the drum 1 is released.
- the invention is based on the object, a descender of o.g. To simplify the type of mechanical construction and operation.
- a direction-independent descender is available in that the ratchet device is additionally switchable to a third state, wherein in the third state of the ratchet device in the second rotational direction of the actuator via the respective ratchet device is force-transmitting connected to the sheave and in the opposite first direction of rotation Actuating this is freely rotatable relative to the pulley.
- a particularly compact descender with low space requirement is achieved by the fact that the abseiling device is connected to the pulley via the main axis.
- a particularly large feed of the traction means in the function of the winch device with each movement of the actuator is achieved by the fact that the ratchet device is arranged on the main axis.
- a particularly simple and intuitively easy operation of the descender is achieved by two ratchet devices are arranged on opposite sides of the pulley on the descender.
- a two-handed operability of the winch device is achieved by the fact that two ratchet devices are provided, each with a lever arm.
- a mechanically particularly simple and functionally reliable ratchet device is achieved in that at least one ratchet device has a housing on which the lever arm is arranged, and a toothed gear which rotatably connected to the power transmission path between the actuating element of the winch device and the pulley, in particular rotationally fixed with the Main axis, is connected, wherein in the housing at least a first and a second pawl are pivotally mounted, wherein the gear and the pawls are formed and arranged such that in the first state of the ratchet device, the first pawl in the toothing of the gear engages and the second pawl is spaced from the gear, so that in the first rotational direction, the first pawl against the toothing abutting the housing rotatably connected to the gear and in the second direction of rotation, the first pawl on inclined flanks of the teeth of the gear sliding the connection between Housing and gear triggers that engages in the third state of the ratchet device, the second pawl in the tooth
- a simple switching between the various states of the ratchet device is achieved in that a pivotable adjusting lever is provided on the housing, which pivots the pawls in the first, second or third state by pivoting relative to the housing in three pivotal positions.
- the adjusting lever has on its surface a recess which is chamfered seen in the circumferential direction, wherein in the recess optionally the first or the second pawl engages, wherein the pawl which engages in the recess in the Interlocking of the gear engages.
- a particularly simple and quick switching of the ratchet device in the freewheel of the second state without the risk of incorrect operation obtained by the fact that the adjusting lever is additionally mounted displaceably in the axial direction in the housing, wherein the adjusting lever is designed such that an axial movement of the adjusting lever the pawls transferred regardless of the current pivot position of the adjusting lever in the second state.
- a particularly simple and reliable transfer of the pawls in the second state at axial displacement of the adjusting lever is achieved in that the recess is formed chamfered at least one end in the axial direction.
- a mechanically particularly simple and at the same time functionally reliable abseiling device is achieved in that the abseiling a transmission gear with a force-transmitting connected to the pulley large gear, meshing with the large gear small gear, which has a smaller diameter than the large gear, and one with the having small gear force transmitting connected braking device, which is designed for example as a centrifugal brake.
- a mechanically particularly simple and functionally reliable additional ratchet device is achieved by the fact that the additional ratchet device, a housing which is rotatably mounted on a housing of the descender, and a gear with toothing, which is rotatably connected to the main axis has, wherein in the housing Ratchet device at least a first and a second pawl are pivotally mounted, wherein the gear and the pawls are designed and arranged such that in the fourth state of the additional ratchet device, the second pawl engages the toothing of the gear and the first pawl is spaced from the gear in such a way that, in the second pulley rotation direction, the second pawl abutting against the toothing rotatably connects the housing to the toothed wheel and, in the first pulley rotation direction, sliding the second pawl over oblique flanks of the toothing of the toothed wheel d
- the connection between the housing and gear triggers, and that in the fifth state of the additional rat
- the additional ratchet device is further switchable to a sixth state, wherein in the sixth state of the additional ratchet device the first and the second pawl are spaced from the gear, so that the main axis is free to rotate in both directions of rotation relative to the housing of the abseiling device.
- a simple switching between the different states of the additional ratchet device is achieved in that the housing of the additional ratchet device, a pivotable adjusting lever is provided which pivots the pawls in the fourth, fifth or sixth state by pivoting relative to the housing in corresponding pivot positions.
- the adjusting lever has on its surface a recess which is chamfered seen in the circumferential direction, wherein in the recess optionally engage the first or the second pawl, wherein the pawl which engages in the recess in the Interlocking of the gear engages.
- a decoupling and more uniform distribution of the forces introduced on the main axis are achieved by the fact that the additional ratchet device is arranged outside the power transmission path between the actuating element of the winch device and the pulley on the main axis.
- a descender according to the invention comprises a descender housing 10 in which a main axis 12 is rotatably mounted. With the main axis 12, a pulley 14 is rotatably connected, via which a traction means (not shown), such as a rope, is guided substantially slip-free.
- the descender has a descender 16 with a transmission gear with a with the pulley on the main axis 12 force-transmitting connected large gear 18, a meshing with the large gear 18 small gear 20 (only schematically in FIG Fig. 4 shown), which has a smaller diameter than the large gear 18, and a force-transmitting connected to the small gear 20 braking device 22 (only schematically in FIG Fig.
- centrifugal brake is designed such that it adjusts a constant speed of the pulley 14 when a load on the traction means by means of the abseiling device 16 of the abseiling device is lowered or is roped.
- the descender has a winch device comprising two ratchet devices 24, which are arranged on the main axis 12 on both sides of the sheave 12 and rotatable relative to the Abseil réelle housing 10.
- the winch device is used for manual rotation of the sheave 14 by a person hanging on the descender so that this person can pull up by means of the descender contrary to the direction of gravity.
- Each ratchet device 24 comprises a ratchet housing 26 on which a lever arm 28 (only indicated in the figures) is arranged as an actuating element of the winch device.
- This lever arm may for example be designed as a handwheel with handle.
- this lever arm 28 is formed as a rod which is formed at a free end as a handle.
- a toothed gear 30 which is rotatably connected to the main axis 12, which is a power transmission path between the actuating element of the winch device or the rattle device 24 and the winch device and the pulley 16 is connected.
- a first pawl 32 and a second pawl 34 are pivotally mounted in the ratchet housing 26, a first pawl 32 and a second pawl 34 are pivotally mounted.
- the toothing of the gear 30 is formed with circumferentially bevelled flanks.
- Each of the pawls 32, 34 is pivotally supported between two positions in the ratchet housing 26, wherein in a first position, the respective pawl 32, 34 engages the toothing of the gear 30 and in a second position, the respective pawl of the toothing of the Gear 30 is spaced or pivoted out of engagement with the toothing of the gear 30.
- the first pawl 32 is in the first position and the second pawl is in the second position.
- Both pawls 32, 34 are in the second position.
- the actuating mechanism for the pawls 32, 34 is formed such that there are only three states for the combination of the arrangement of the pawls 32, 34 in the first and second positions.
- a first state of the ratchet device 24 the first pawl 32 is pivoted to the first position and the second pawl 34 is pivoted to the second position as in FIG FIGS. 7 and 8 shown.
- a third state the first pawl 32 is pivoted to the second position and the second pawl 34 in the first position.
- both pawls 32, 34 are pivoted to the second position, as in FIG FIGS. 9 and 10 shown. In this way, only a maximum of one of the two pawls 32, 34 is pivoted to the first position.
- rotation of the gear 30 is used synonymously for a rotation of the main shaft 12 and the pulley 14 in the corresponding direction of rotation or the lever arm 28 and the winch device in the opposite direction of rotation.
- first Direction of rotation 38 slides the first pawl 32 on the sloping flanks of the teeth of the gear 30, so that in this first rotational direction 38, the gear 30 with the main axis 12 and the sheave 14 free rotates relative to the ratchet housing 26 and the lever arm 28.
- the main shaft 12 can rotate in the first direction of rotation 38, without the ratchet housing 26 and the lever arm 28 rotates.
- the main axis 12 can be manually rotated in the first direction of rotation 38, while upon rotation of the lever arm 28 and the ratchet housing 26 in the second Direction of rotation 36 for a next feed without rotation of the main axis 12 can be made.
- the latter presupposes that the main axis 12 is blocked elsewhere against rotation in the second direction of rotation 36. This is done, for example, by the ratchet device 24 disposed on the main axis 12 opposite.
- the sheave 14 rotates Due to the slip-free passage of the traction means and thus the main axis 12 and the gear 30 during rappelling, if a force-transmitting connection existed in the corresponding direction of rotation between the gear 30 and the ratchet housing 26, the lever arms 28 of the two ratchet devices 24 would also rappel The lever arms 28 could strike the person to be separated and injure them accordingly, which is prevented by the freewheel.
- a relatively pivotable from the ratchet housing 26 adjusting lever 40 is provided on the ratchet housing 26.
- the formation of the adjusting lever 40 is in the Fig. 11 to 14 shown.
- the adjusting lever 40 has a switching pin 42 and a non-rotatably associated actuating lever 44 for manual pivoting of the adjusting lever 40.
- the switching pin 42 has on its surface a first recess 46 which has in the circumferential direction of the switching pin 42 oblique edges. In the direction of a free, remote from the actuating lever 44 end of the switching pin 42, the first recess in the axial direction with respect to the switching pin 42 is pointed and here also has oblique edges.
- the switching pin 42 also has on its surface a second recess 48 with two locking grooves 50 formed therein.
- the first pawl 32 engages in the first recess 46 and the second pawl 34 abuts the surface of the switching pin 42, so that the first pawl 32 engages in the toothing of the gear 30.
- this is correspondingly reversed analogously for the two pawls 32, 34.
- the adjusting lever 40 is simply pivoted by means of the actuating lever 44, so that the second pawl 34 engages in the first recess 46 and the first pawl 32 rests on the surface of the switching pin 42.
- the second state as in FIGS.
- the adjusting lever 40 is pivoted so that none of the pawls 32, 34 engages in the first recess 46, so that both pawls 32, 34 abut the surface of the switching pin 42 and are pivoted out of engagement with the toothing of the gear 30.
- the pivoting of the adjusting lever 40 with the corresponding entry and exit of the pawls 32, 34 in the first recess 46 into or out of the first recess 46 is supported by the oblique edge formed in the circumferential direction in the first recess.
- the adjusting lever 40 is designed such that either one or both pawls 32, 34 engage in the recess 46. In this case can not be switched by means of pivoting the locking lever alone in the freewheel. Instead, in the pivot position of the adjusting lever 40, in which both pawls 32, 34 engage in the recess 46, the gear 30 rotatably connected in all directions of rotation with the ratchet housing 26.
- the adjusting lever 40 is not only pivotable in the ratchet housing 26, but also arranged displaceably in the axial direction with respect to the switching pin 42 between a first axial position and a second axial position.
- FIGS. 7 and 8 the first axial position of the adjusting lever 40 is shown. This first axial position of the adjusting lever 40 is controlled by a pin 52 (FIG. Fig. 8, 10th ), which engages in one of the locking grooves 50.
- first axial position selectively engages or no pawl 32, 34 or one or both pawls 32, 34 in the first recess, depending on the pivot position of the adjusting, so depending on the pivotal position of the adjusting lever 40 optionally the first state, the third state or the second state (freewheel) or the above-described further state with rotatably connected in all directions with the ratchet housing 26 gear 30 of the ratchet device 24 is set.
- FIGS. 9 and 10 the second axial position of the adjusting lever 40 is shown.
- This second axial position of the adjusting lever 40 is also locked by the pin 52, which engages in the corresponding other of the two locking grooves 50.
- the pawls 32, 34 are independent of the pivot position of the adjusting lever 40 always on the surface of the switching pin 42, so that always both pawls are pivoted out of engagement with the toothing of the gear 30. In this second axial position therefore always the freewheel or the second state of the ratchet device 24 is set.
- This second axial position of the adjusting lever is used for automatically switching the ratchet device in the freewheel.
- a survey 54 ( Fig. 1 to 3 and 5, 6 ) arranged with oblique edges such that the ratchet housing 26 with the point at which the adjusting lever 40th is located past the survey 54 when the housing rotates accordingly.
- the switching pin 42 protrudes so far beyond the ratchet housing 26 in the direction of the descender housing 10 in the first axial position that the switching pin 42 abuts against the elevation 54.
- both ratchet devices 24 are automatically switched into freewheeling when the ratchet housings 26 or the lever arms 28 rotate freely with the sheave 14. This forced change into the freewheel is only canceled again when a user manually shifts the adjustment lever 40 back into the first axial position, in which it is possible to switch between the first, second and third states.
- This automatic switching to the freewheel makes an additional lock for the pulley or the Abseilvor substances dispensable, because even if a user when using the lever arms 28 for manual pulling this just let go, turn the ratchet devices 24 after one revolution of the lever arms 24 and of the ratchet housing 26 in the freewheel.
- this automatic switching to the freewheel by the user can also be used to consciously go from the operation of the abseiling device as a winch without manual switching immediately in the abseiling over without the lever arms 28 longer than a maximum of one revolution with the sheave Turn 14 together.
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Description
Die vorliegende Erfindung betrifft ein Abseilgerät mit einer Windenvorrichtung, einer drehbar gelagerten Hauptachse, auf der drehfest eine Seilscheibe zum schlupfsicheren Führen eines Zugmittels angeordnet ist, und einer mit der Seilscheibe kraftübertragend verbundenen Abseilvorrichtung, welche zum Halten einer konstanten Abseilgeschwindigkeit einer an dem Zugmittel hängenden Last ausgebildet ist, wobei die Windenvorrichtung eine Betätigungseinrichtung aufweist, die über einen Kraftübertragungsweg mit der Seilscheibe zum manuellen Drehen der Seilscheibe verbunden ist, wobei in einem Kraftübertragungsweg zwischen dem Betätigungselement der Windenvorrichtung und der Seilscheibe mindestens eine Knarrenvorrichtung angeordnet ist, wobei die Knarrenvorrichtung mindestens zwischen einem ersten Zustand und einem zweiten Zustand umschaltbar ist, wobei in dem ersten Zustand der Knarrenvorrichtung in eine erste Drehrichtung der Betätigungseinrichtung diese über die jeweilige Knarrenvorrichtung kraftübertragend mit der Seilscheibe verbunden ist und in eine entgegengesetzte zweite Drehrichtung der Betätigungseinrichtung diese frei relativ zur Seilscheibe drehbar ist, wobei die Betätigungseinrichtung mindestens einen Hebelarm aufweist, welcher derart angeordnet ist, dass dieser Hebelarm über die Knarrenvorrichtung Drehkräfte in den Kraftübertragungsweg zwischen der Seilscheibe und der Betätigungseinrichtung einleitet, gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a descender with a winch device, a rotatably mounted main axis on which a pulley for slip-proof guiding a traction means is rotatably disposed, and a force-transmitting connected to the pulley Abseilvorrichtung which formed to hold a constant abseiling of a hanging on the traction load wherein the winch device comprises an actuator connected to the sheave for manually rotating the sheave via a power transmission path, wherein at least one ratchet device is disposed in a force transmission path between the actuator of the winch device and the sheave, the ratchet device at least between a first state and a second state is switchable, wherein in the first state of the ratchet device in a first direction of rotation of the actuating device on the respective ratchet before direction is force-transmitting connected to the sheave and in an opposite second direction of rotation of the actuator this is freely rotatable relative to the pulley, wherein the actuating device has at least one lever arm, which is arranged such that this lever arm on the ratchet device rotational forces in the power transmission path between the sheave and the actuator initiates, according to the preamble of claim 1.
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Der Erfindung liegt die Aufgabe zugrunde, ein Abseilgerät der o.g. Art hinsichtlich des mechanischen Aufbaus und der Bedienung zu vereinfachen.The invention is based on the object, a descender of o.g. To simplify the type of mechanical construction and operation.
Diese Aufgabe wird erfindungsgemäß durch ein Abseilgerät der o.g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.This object is achieved by a descender o.g. Art solved with the features characterized in claim 1. Advantageous embodiments of the invention are described in the further claims.
Bei einem Abseilgerät der o.g. Art ist es erfindungsgemäß vorgesehen, dass in dem zweiten Zustand der jeweiligen Knarrenvorrichtung die Sperrklinken außer Eingriff mit der Verzahnung des Zahnrades angeordnet sind, so dass die Knarrenvorrichtung in die erste und zweite Drehrichtung der Betätigungseinrichtung frei relativ zur Seilscheibe drehbar ist.In a descender of the o.g. It is inventively provided that in the second state of the respective ratchet device, the pawls are disengaged from the toothing of the gear, so that the ratchet device is freely rotatable relative to the sheave in the first and second rotational direction of the actuator.
Dies hat den Vorteil, dass die Windenfunktion des Abseilgerätes auf mechanisch besonders einfache Weise realisiert ist, wobei durch die Freilauffunktion im zweiten Zustand der bzw. die Hebelarme von der Drehung der Seilscheibe entkoppelt sind, so dass diese Hebelarme bei der Funktion des Abseilens sich nicht mitdrehen.This has the advantage that the winch function of the abseiling device is realized in a mechanically particularly simple manner, wherein the lever arms are decoupled from the rotation of the sheave by the freewheeling function in the second state, so that these lever arms do not rotate in the function of abseiling ,
Ein richtungsunabhängiges Abseilgerät steht dadurch zur Verfügung, dass die Knarrenvorrichtung zusätzlich in einen dritten Zustand umschaltbar ist, wobei in dem dritten Zustand der Knarrenvorrichtung diese in die zweite Drehrichtung der Betätigungseinrichtung über die jeweilige Knarrenvorrichtung kraftübertragend mit der Seilscheibe verbunden ist und in die entgegengesetzte erste Drehrichtung der Betätigungseinrichtung diese frei relativ zur Seilscheibe drehbar ist.A direction-independent descender is available in that the ratchet device is additionally switchable to a third state, wherein in the third state of the ratchet device in the second rotational direction of the actuator via the respective ratchet device is force-transmitting connected to the sheave and in the opposite first direction of rotation Actuating this is freely rotatable relative to the pulley.
Ein unerwünschtes mitdrehen des Betätigungselementes und insbesondere des bzw. der Hebelarme des Betätigungselementes der Windenvorrichtung bei einem Abseilen mit dem Abseilgerät mittels der Abseilvorrichtung ist auch ohne ein manuelles Umstellen der Knarrenvorrichtung in den zweiten Zustand durch einen Benutzer dadurch wirksam unterbunden, dass eine Umschalteinrichtung vorgesehen ist, welche die Knarrenvorrichtung selbsttätig in den zweiten Zustand schaltet, wenn sich die Knarrenvorrichtung in dem ersten oder dritten Zustand befindet und wenn sich die Seilscheibe allein aufgrund einer Krafteinwirkung auf diese durch das Zugmittel dreht. Dies eliminiert eine potentielle Verletzungsgefahr für einen Benutzer des Abseilgerätes, falls dieser beispielsweise durch eine Fehlbedienung die Abseilvorrichtung verwendet ohne zuvor in den Freilauf für die Windenvorrichtung gemäß dem zweiten Zustand manuell umgeschaltet zu haben. Eine Verletzungsgefahr durch eine fehlerhafte Bedienung bei der Umschaltung von Windenbetrieb in den Abseilbetrieb ist wirksam eliminiert.An undesirable turning of the actuating element and in particular of the or the lever arms of the actuating element of the winch device in a rappelling with the abseiling device by means of Abseilvorrichtung is thereby effectively prevented even without a manual switching the ratchet device in the second state by a user that provided a switching device is, which automatically switches the ratchet device to the second state when the ratchet device is in the first or third state and when the pulley rotates due to a force acting on it by the traction means alone. This eliminates a potential risk of injury to a user of the descender, if he / she uses the abseiling device, for example, by misoperation, without having previously manually switched to the freewheel for the winch device according to the second condition. A risk of injury due to faulty operation when switching from winch operation to descent operation is effectively eliminated.
Ein besonders kompaktes Abseilgerät mit geringem Bauraumbedarf erzielt man dadurch, dass die Abseilvorrichtung über die Hauptachse mit der Seilscheibe verbunden ist.A particularly compact descender with low space requirement is achieved by the fact that the abseiling device is connected to the pulley via the main axis.
Einen besonders großen Vorschub des Zugmittels in der Funktion der Windenvorrichtung mit jeder Bewegung der Betätigungseinrichtung erzielt man dadurch, dass die Knarrenvorrichtung auf der Hauptachse angeordnet ist.A particularly large feed of the traction means in the function of the winch device with each movement of the actuator is achieved by the fact that the ratchet device is arranged on the main axis.
Eine besonders einfache und intuitiv leichte Bedienbarkeit des Abseilgerätes erzielt man dadurch, dass zwei Knarrenvorrichtungen an gegenüberliegenden Seiten bezogen auf die Seilscheibe an dem Abseilgerät angeordnet sind.A particularly simple and intuitively easy operation of the descender is achieved by two ratchet devices are arranged on opposite sides of the pulley on the descender.
Eine zweihändige Bedienbarkeit der Windenvorrichtung erzielt man dadurch, dass zwei Knarrenvorrichtungen mit jeweils einem Hebelarm vorgesehen sind.A two-handed operability of the winch device is achieved by the fact that two ratchet devices are provided, each with a lever arm.
Eine mechanisch besonders einfache und funktionssichere Knarrenvorrichtung erzielt man dadurch, dass mindestens eine Knarrenvorrichtung ein Gehäuse, an dem der Hebelarm angeordnet ist, und ein Zahnrad mit Verzahnung aufweist, welches drehfest mit dem Kraftübertragungsweg zwischen dem Betätigungselement der Windenvorrichtung und der Seilscheibe, insbesondere drehfest mit der Hauptachse, verbunden ist, wobei in dem Gehäuse mindestens eine erste und eine zweite Sperrklinke verschwenkbar angeordnet sind, wobei das Zahnrad und die Sperrklinken derart ausgebildet und angeordnet sind, dass in dem ersten Zustand der Knarrenvorrichtung die erste Sperrklinke in die Verzahnung des Zahnrades eingreift sowie die zweite Sperrklinke von dem Zahnrad beabstandet ist, so dass in die erste Drehrichtung die erste Sperrklinke an der Verzahnung anschlagend das Gehäuse drehfest mit dem Zahnrad verbindet und in die zweite Drehrichtung die erste Sperrklinke über schräge Flanken der Verzahnung des Zahnrades gleitend die Verbindung zwischen Gehäuse und Zahnrad löst, dass in dem dritten Zustand der Knarrenvorrichtung die zweite Sperrklinke in die Verzahnung des Zahnrades eingreift sowie die erste Sperrklinke von dem Zahnrad beabstandet ist, so dass in die zweite Drehrichtung die zweite Sperrklinke an der Verzahnung anschlagend das Gehäuse drehfest mit dem Zahnrad verbindet und in die erste Drehrichtung die zweite Sperrklinke über schräge Flanken der Verzahnung des Zahnrades gleitend die Verbindung zwischen Gehäuse und Zahnrad löst, und dass in dem zweiten Zustand der Knarrenvorrichtung die erste und die zweite Sperrklinke von dem Zahnrad beabstandet sind.A mechanically particularly simple and functionally reliable ratchet device is achieved in that at least one ratchet device has a housing on which the lever arm is arranged, and a toothed gear which rotatably connected to the power transmission path between the actuating element of the winch device and the pulley, in particular rotationally fixed with the Main axis, is connected, wherein in the housing at least a first and a second pawl are pivotally mounted, wherein the gear and the pawls are formed and arranged such that in the first state of the ratchet device, the first pawl in the toothing of the gear engages and the second pawl is spaced from the gear, so that in the first rotational direction, the first pawl against the toothing abutting the housing rotatably connected to the gear and in the second direction of rotation, the first pawl on inclined flanks of the teeth of the gear sliding the connection between Housing and gear triggers that engages in the third state of the ratchet device, the second pawl in the toothing of the gear and the first pawl is spaced from the gear, so that in the second direction of rotation, the second pawl on the toothing striking the housing rotationally fixed to the gear connects and in the first direction of rotation, the second pawl slidably over oblique edges of the toothing of the gear triggers the connection between the housing and gear, and that in the second state of the ratchet device, the first and the second pawl are spaced from the gear.
Ein einfaches Umschalten zwischen den verschiedenen Zuständen der Knarrenvorrichtung erzielt man dadurch, dass am Gehäuse ein schwenkbarer Verstellhebel vorgesehen ist, welcher durch Verschwenken relativ zum Gehäuse in drei Schwenkpositionen die Sperrklinken in den ersten, zweiten oder dritten Zustand verschwenkt.A simple switching between the various states of the ratchet device is achieved in that a pivotable adjusting lever is provided on the housing, which pivots the pawls in the first, second or third state by pivoting relative to the housing in three pivotal positions.
Eine besonders funktionssicher Umschaltung erzielt man dadurch, dass der Verstellhebel an seiner Oberfläche eine Ausnehmung aufweist, die in Umfangsrichtung gesehen abgeschrägt ist, wobei in die Ausnehmung wahlweise die erste oder die zweite Sperrklinke eingreift, wobei diejenige Sperrklinge, welche in die Ausnehmung eingreift, in die Verzahnung des Zahnrades eingreift.A particularly reliable switching is achieved in that the adjusting lever has on its surface a recess which is chamfered seen in the circumferential direction, wherein in the recess optionally the first or the second pawl engages, wherein the pawl which engages in the recess in the Interlocking of the gear engages.
Eine besonders einfache und schnelle Umschaltung der Knarrenvorrichtung in den Freilauf des zweiten Zustands ohne die Gefahr einer Fehlbedienung erzielt man dadurch, dass der Verstellhebel zusätzlich in axialer Richtung verschiebbar in dem Gehäuse gelagert ist, wobei der Verstellhebel derart ausgebildet ist, dass eine axiale Bewegung des Verstellhebels die Sperrklinken unabhängig von der momentanen Schwenkposition des Verstellhebels in den zweiten Zustand überführt.A particularly simple and quick switching of the ratchet device in the freewheel of the second state without the risk of incorrect operation obtained by the fact that the adjusting lever is additionally mounted displaceably in the axial direction in the housing, wherein the adjusting lever is designed such that an axial movement of the adjusting lever the pawls transferred regardless of the current pivot position of the adjusting lever in the second state.
Eine besonders einfache und funktionssicher Überführung der Sperrklinken in den zweiten Zustand bei axialer Verschiebung des Verstellhebels erzielt man dadurch, dass die Ausnehmung an wenigstens einem Ende in axialer Richtung abgeschrägt ausgebildet ist.A particularly simple and reliable transfer of the pawls in the second state at axial displacement of the adjusting lever is achieved in that the recess is formed chamfered at least one end in the axial direction.
Eine selbsttätige Umschaltung der Knarrenvorrichtung in den Freilauf des zweiten Zustandes nach spätestens einer vollen Umdrehung des Hebel um 360 Grad erzielt man dadurch, dass an dem Abseilgerät eine Erhebung derart ausgebildet und angeordnet ist, dass diese Erhebung den Verstellhebel in axialer Richtung verschiebt, wenn das Gehäuse der Knarrenvorrichtung die Stelle der Erhebung passiert. Hierdurch erfolgt in jedem Fall die Umschaltung in den Freilauf, wenn sich eine Person mit dem Abseilgerät abseilt und vergisst, zuvor die Knarrenvorrichtung in den Freilauf des zweiten Zustandes zu schalten, damit der Hebelarm während des Abseilens nicht mit der Seilscheibe mitdreht, so dass eine entsprechende Verletzungsgefahr durch einen sich frei drehenden Hebelarm wirksam vermieden ist.An automatic switching of the ratchet device in the freewheel of the second state after the latest one full rotation of the lever by 360 degrees achieved by the fact that on the descender a survey is designed and arranged such that this elevation shifts the adjustment lever in the axial direction when the housing the ratchet device passes the point of elevation. As a result, in any case, the switch to the freewheel when a person abseil with the descender and forgets to switch the ratchet device in the freewheel of the second state, so that the lever arm during rappelling does not rotate with the pulley, so that a corresponding Risk of injury by a freely rotating lever arm is effectively avoided.
Eine mechanisch besonders einfache und gleichzeitig funktionssichere Abseilvorrichtung erzielt man dadurch, dass die Abseilvorrichtung ein Übersetzungsgetriebe mit einem mit der Seilscheibe kraftübertragend verbundenen großen Zahnrad, einem mit dem großen Zahnrad kämmenden kleinen Zahnrad, welches einen kleineren Durchmesser aufweist als das große Zahnrad, und einer mit dem kleinen Zahnrad kraftübertragend verbundenen Bremsvorrichtung aufweist, welche beispielsweise als Fliehkraftbremse ausgebildet ist.A mechanically particularly simple and at the same time functionally reliable abseiling device is achieved in that the abseiling a transmission gear with a force-transmitting connected to the pulley large gear, meshing with the large gear small gear, which has a smaller diameter than the large gear, and one with the having small gear force transmitting connected braking device, which is designed for example as a centrifugal brake.
Eine einfache Arretierung der Seilscheibe relativ zu einem Gehäuse des Abseilgerätes zum Betätigen des Hebelarmes der Knarrenvorrichtung in die jeweils freigegebene Drehrichtung des ersten oder dritten Zustandes, in die die Betätigungseinrichtung frei relativ zur Seilscheibe drehbar ist, erzielt man dadurch, dass eine zusätzliche Knarrenvorrichtung vorgesehen ist, welche drehfest mit einem Gehäuse des Abseilgerätes und kraftübertragend mit der Seilscheibe verbunden ist sowie wahlweise in einen vierten Zustand oder fünften Zustand umschaltbar ist, wobei in dem vierten Zustand die zusätzliche Knarrenvorrichtung die Seilscheibe in eine erste Seilscheiben-Drehrichtung, welche der ersten Drehrichtung der Betätigungseinrichtung entspricht, frei gibt und in eine zweite Seilscheiben-Drehrichtung, welche der zweiten Drehrichtung der Betätigungseinrichtung entspricht, relativ zum Gehäuse fixiert, wobei in dem fünften Zustand die zusätzliche Knarrenvorrichtung die Seilscheibe in die zweite Seilscheiben-Drehrichtung frei gibt und in die erste Seilscheiben-Drehrichtung relativ zum Gehäuse fixiert.A simple locking of the pulley relative to a housing of the abseiling device for actuating the lever arm of the ratchet device in the respective released direction of rotation of the first or third state, in which the actuator is freely rotatable relative to the sheave, achieved by providing an additional ratchet device is provided which is rotatably connected to a housing of the abseiling device and force transmitting to the sheave and is selectively switchable to a fourth state or fifth state, wherein in the fourth state, the additional ratchet device corresponds to the sheave in a first sheave rotation direction, which corresponds to the first direction of rotation of the actuator , free and in a second pulley rotation direction, which corresponds to the second rotational direction of the actuating device, fixed relative to the housing, wherein in the fifth state, the additional ratchet device releases the sheave in the second sheave rotation direction and fixed in the first sheave rotation direction relative to the housing.
Eine mechanisch besonders einfache und funktionssichere zusätzliche Knarrenvorrichtung erzielt man dadurch, dass die zusätzliche Knarrenvorrichtung ein Gehäuse, welches drehfest an einem Gehäuse des Abseilgerätes angeordnet ist, und ein Zahnrad mit Verzahnung, welches drehfest mit der Hauptachse verbunden ist, aufweist, wobei in dem Gehäuse der Knarrenvorrichtung mindestens eine erste und eine zweite Sperrklinke verschwenkbar angeordnet sind, wobei das Zahnrad und die Sperrklinken derart ausgebildet und angeordnet sind, dass in dem vierten Zustand der zusätzlichen Knarrenvorrichtung die zweite Sperrklinke in die Verzahnung des Zahnrades eingreift sowie die erste Sperrklinke von dem Zahnrad beabstandet ist, so dass in die zweite Seilscheiben-Drehrichtung die zweite Sperrklinke an der Verzahnung anschlagend das Gehäuse drehfest mit dem Zahnrad verbindet und in die erste Seilscheiben-Drehrichtung die zweite Sperrklinke über schräge Flanken der Verzahnung des Zahnrades gleitend die Verbindung zwischen Gehäuse und Zahnrad löst, und dass in dem fünften Zustand der zusätzlichen Knarrenvorrichtung die erste Sperrklinke in die Verzahnung des Zahnrades eingreift sowie die zweite Sperrklinke von dem Zahnrad beabstandet ist, so dass in die erste Seilscheiben-Drehrichtung die erste Sperrklinke an der Verzahnung anschlagend das Gehäuse der Knarrenvorrichtung drehfest mit dem Zahnrad verbindet und in die zweite Seilscheiben-Drehrichtung die erste Sperrklinke über schräge Flanken der Verzahnung des Zahnrades gleitend die Verbindung zwischen Gehäuse und Zahnrad löst.A mechanically particularly simple and functionally reliable additional ratchet device is achieved by the fact that the additional ratchet device, a housing which is rotatably mounted on a housing of the descender, and a gear with toothing, which is rotatably connected to the main axis has, wherein in the housing Ratchet device at least a first and a second pawl are pivotally mounted, wherein the gear and the pawls are designed and arranged such that in the fourth state of the additional ratchet device, the second pawl engages the toothing of the gear and the first pawl is spaced from the gear in such a way that, in the second pulley rotation direction, the second pawl abutting against the toothing rotatably connects the housing to the toothed wheel and, in the first pulley rotation direction, sliding the second pawl over oblique flanks of the toothing of the toothed wheel d The connection between the housing and gear triggers, and that in the fifth state of the additional ratchet device engages the first pawl in the toothing of the gear and the second pawl is spaced from the gear, so that in the first pulley rotation direction, the first pawl on the toothing striking the housing of the ratchet device rotatably connected to the gear and in the second pulley rotation direction, the first pawl slidably over oblique edges of the toothing of the gear triggers the connection between the housing and gear.
Ein Einfluss auf die Funktion der Abseilvorrichtung durch die zusätzliche Knarrenvorrichtung, wenn nur die Abseilvorrichtung zum Abseilen verwendet werden soll, ist dadurch eliminiert, dass die zusätzliche Knarrenvorrichtung weiterhin in einen sechsten Zustand schaltbar ist, wobei in dem sechsten Zustand der zusätzlichen Knarrenvorrichtung die erste und die zweite Sperrklinke von dem Zahnrad beabstandet sind, so dass die Hauptachse frei in beide Drehrichtungen relativ zum Gehäuse des Abseilgerätes drehbar ist.An influence on the function of the abseiling device by the additional ratchet device, if only the abseiling device is to be used for abseiling, is eliminated in that the additional ratchet device is further switchable to a sixth state, wherein in the sixth state of the additional ratchet device the first and the second pawl are spaced from the gear, so that the main axis is free to rotate in both directions of rotation relative to the housing of the abseiling device.
Ein einfaches Umschalten zwischen den verschiedenen Zuständen der zusätzlichen Knarrenvorrichtung erzielt man dadurch, dass am Gehäuse der zusätzlichen Knarrenvorrichtung ein schwenkbarer Verstellhebel vorgesehen ist, welcher durch Verschwenken relativ zum Gehäuse in entsprechende Schwenkpositionen die Sperrklinken in den vierten, fünften oder sechsten Zustand verschwenkt.A simple switching between the different states of the additional ratchet device is achieved in that the housing of the additional ratchet device, a pivotable adjusting lever is provided which pivots the pawls in the fourth, fifth or sixth state by pivoting relative to the housing in corresponding pivot positions.
Eine besonders funktionssichere Umschaltung erzielt man dadurch, dass der Verstellhebel an seiner Oberfläche eine Ausnehmung aufweist, die in Umfangsrichtung gesehen abgeschrägt ist, wobei in die Ausnehmung wahlweise die erste oder die zweite Sperrklinke eingreifen, wobei diejenige Sperrklinge, welche in die Ausnehmung eingreift, in die Verzahnung des Zahnrades eingreift.A particularly reliable switching is achieved in that the adjusting lever has on its surface a recess which is chamfered seen in the circumferential direction, wherein in the recess optionally engage the first or the second pawl, wherein the pawl which engages in the recess in the Interlocking of the gear engages.
Eine Entkopplung sowie gleichmäßigere Verteilung der auf die Hauptachse eingeleiteten Kräfte erzielt man dadurch, dass die zusätzliche Knarrenvorrichtung außerhalb des Kraftübertragungsweges zwischen dem Betätigungselement der Windenvorrichtung und der Seilscheibe auf der Hauptachse angeordnet ist.A decoupling and more uniform distribution of the forces introduced on the main axis are achieved by the fact that the additional ratchet device is arranged outside the power transmission path between the actuating element of the winch device and the pulley on the main axis.
Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Diese zeigt in:
- Fig. 1
- eine bevorzugte Ausführungsform eines erfindungsgemäßen Abseilgerätes in perspektivischer Ansicht,
- Fig. 2
- das Abseilgerät gemäß
Fig. 1 in Frontansicht, - Fig. 3
- das Abseilgerät gemäß
Fig. 1 in Seitenansicht, - Fig. 4
- das Abseilgerät gemäß
Fig. 1 in einer Querschnittdarstellung, - Fig. 5
- das Abseilgerät gemäß
Fig. 1 in einer Längsschnittdarstellung, - Fig. 6
- das Abseilgerät gemäß
Fig. 1 in einer perspektivischen Längsschnittdarstellung, - Fig. 7
- eine Knarrenvorrichtung des Abseilgerätes gemäß
Fig. 1 in einem ersten Zustand in einer Querschnittdarstellung, - Fig. 8
- die Knarrenvorrichtung gemäß
Fig. 7 in dem ersten Zustand in einer Längsschnittdarstellung entlang Linie A-A vonFig. 7 , - Fig. 9
- die Knarrenvorrichtung gemäß
Fig. 7 in einem zweiten Zustand in einer Querschnittdarstellung, - Fig. 10
- die Knarrenvorrichtung gemäß
Fig. 7 in dem zweiten Zustand in einer Längsschnittdarstellung entlang Linie B-B vonFig. 9 , - Fig. 11
- einen Verstellhebel der Knarrenvorrichtung gemäß
Fig. 7 in perspektivischer Darstellung, - Fig. 12
- den Verstellhebel gemäß
Fig. 11 in einer weiteren perspektivischen Darstellung, - Fig. 13
- den Verstellhebel gemäß
Fig. 11 in Seitenansicht und - Fig. 14
- den Verstellhebel gemäß
Fig. 11 in Aufsicht.
- Fig. 1
- a preferred embodiment of a descender according to the invention in a perspective view,
- Fig. 2
- the descender according to
Fig. 1 in front view, - Fig. 3
- the descender according to
Fig. 1 in side view, - Fig. 4
- the descender according to
Fig. 1 in a cross-sectional view, - Fig. 5
- the descender according to
Fig. 1 in a longitudinal section, - Fig. 6
- the descender according to
Fig. 1 in a perspective longitudinal section, - Fig. 7
- a ratchet device of the descender according to
Fig. 1 in a first state in a cross-sectional view, - Fig. 8
- the ratchet device according to
Fig. 7 in the first state in a longitudinal section along line AA ofFig. 7 . - Fig. 9
- the ratchet device according to
Fig. 7 in a second state in a cross-sectional view, - Fig. 10
- the ratchet device according to
Fig. 7 in the second state in a longitudinal section along line BB of FIGFig. 9 . - Fig. 11
- an adjusting lever of the ratchet device according to
Fig. 7 in perspective, - Fig. 12
- according to the adjusting lever
Fig. 11 in a further perspective view, - Fig. 13
- according to the adjusting lever
Fig. 11 in side view and - Fig. 14
- according to the adjusting lever
Fig. 11 in supervision.
Die in den
Weiterhin weist das Abseilgerät eine Windenvorrichtung auf, die zwei Knarrenvorrichtungen 24 umfasst, die auf der Hauptachse 12 beidseitig der Seilscheibe 12 und drehbar relativ zum Abseilgerät-Gehäuse 10 angeordnet sind. Die Windenvorrichtung dient zum manuellen Drehen der Seilscheibe 14 durch eine an dem Abseilgerät hängen Person derart, dass sich diese Person mittels des Abseilgerätes entgegen der Schwerkraftrichtung aufwärts ziehen kann.Furthermore, the descender has a winch device comprising two
Der mechanische Aufbau sowie die Funktion der Knarrenvorrichtungen 24 sind insbesondere aus den
Nachfolgend wird der Ausdruck "Drehung des Zahnrades 30" synonym verwendet für eine Drehung der Hauptachse 12 bzw. der Seilscheibe 14 in die entsprechende Drehrichtung bzw. des Hebelarmes 28 bzw. der Windenvorrichtung in die entgegengesetzte Drehrichtung.Hereinafter, the term "rotation of the
In dem ersten Zustand der Knarrenvorrichtung 24, wie in
In dem in
Zum Verschwenken der Sperrklinken 32, 34 bzw. zum Umschalten zwischen dem ersten, zweiten und dritten Zustand ist am Knarrengehäuse 26 ein relativ vom Knarrengehäuse 26 verschwenkbarer Verstellhebel 40 vorgesehen. Die Ausbildung des Verstellhebels 40 ist in den
Wie insbesondere aus
Alternativ ist der Verstellhebel 40 derart ausgebildet, dass entweder eine oder beide Sperrklinken 32, 34 in die Ausnehmung 46 eingreifen. In diesem Fall kann mittels eines Verschwenkens des Sperrhebels alleine nicht in den Freilauf umgeschaltet werden. Statt dessen ist in derjenigen Schwenkposition des Verstellhebels 40, in der beide Sperrklinken 32, 34 in die Ausnehmung 46 eingreifen, das Zahnrad 30 in alle Drehrichtungen drehfest mit dem Knarrengehäuse 26 verbunden.Alternatively, the adjusting
Der Verstellhebel 40 ist in dem Knarrengehäuse 26 nicht nur verschwenkbar, sondern auch in axialer Richtung bezüglich des Schaltzapfens 42 zwischen einer ersten axialen Position und einer zweiten axialen Position verschiebbar angeordnet. In
In
Diese zweite axiale Position des Verstellhebels dient zum selbsttätigen Umschalten der Knarrenvorrichtung in den Freilauf. Hierzu ist an dem Abseilgerät-Gehäuse 10 eine Erhebung 54 (
Diese selbsttätige Umschaltung in den Freilauf macht eine zusätzliche Sperre für die Seilscheibe bzw. die Abseilvorrichtung entbehrlich, denn selbst wenn ein Benutzer bei Verwendung der Hebelarme 28 zum manuellen Hochziehen diese einfach los lässt, schalten sich die Knarrenvorrichtungen 24 nach spätestens einer Umdrehung der Hebelarme 24 bzw. des Knarrengehäuses 26 in den Freilauf. Andererseits kann diese selbsttätige Umschaltung in den Freilauf von dem Benutzer auch bewusst dazu verwendet werden, von dem Betrieb der Abseilvorrichtung als Winde ohne jegliche manuelle Umschaltung sofort in den Abseilbetrieb über zu gehen, ohne dass dabei die Hebelarme 28 länger als maximal eine Umdrehung mit der Seilscheibe 14 mitdrehen.This automatic switching to the freewheel makes an additional lock for the pulley or the Abseilvorrichtung dispensable, because even if a user when using the
Claims (21)
- Abseiling device with a winch mechanism, a rotatably mounted main axis (12) on which a sheave (14) is arranged rotatably for slip-proof guidance of a traction means, and an abseiling mechanism (16), connected with the sheave (14) in a force-transmitting manner, which is configured to maintain a constant abseiling speed of the load suspended on the traction means, wherein the winch mechanism has an operating mechanism which is connected via a force transmission path with the sheave (14) for manual rotation of the sheave (14), wherein at least one ratchet mechanism (24) with a toothed gear wheel (30) and pawls (32, 34) is arranged in a force transmission path between the operating element of the winch mechanism and the sheave (14), wherein the ratchet mechanism (24) is switchable at least between a first state and a second state, wherein the gear wheel (30) and pawls (32, 34) are configured such that, in the first state of the ratchet mechanism (24), in a first direction of rotation (38) of the operating mechanism this is connected in a force-transmitting manner with the sheave (14) via the respective ratchet mechanism (24), and in an opposite second direction of rotation (36) of the operating mechanism this is freely rotatable relative to the sheave (14), wherein the operating mechanism has at least one lever arm (28) which is arranged such that this lever arm (28) introduces rotary forces into the force transmission path between the sheave (14) and the operating mechanism via the ratchet mechanism (24),
characterised in that
in the second state of the respective ratchet mechanism (24) the pawls (32, 34) are arranged out of engagement with the gearing of the gear wheel (30) so that the ratchet mechanism (24) is freely rotatable relative to the sheave (14) in the first and second direction of rotation (38, 36) of the operating mechanism. - Abseiling device according to claim 1, characterised in that the ratchet mechanism (24) can be switched into a third state, wherein the gear wheel (30) and pawls (32, 34) are configured such that, in the third state of the ratchet mechanism (24), in the second direction of rotation (36) of the operating mechanism this is connected in a force-transmitting manner with the sheave (14) via the respective ratchet mechanism (24) and in the opposite first direction of rotation (38) of the operating mechanism this is freely rotatable relative to the sheave (14).
- Abseiling device according to claim 2, characterised in that a switchover mechanism (40, 54) is provided which automatically switches the ratchet mechanism (24) into the second state if the ratchet mechanism (24) is in the first or third state and if the sheave (14) rotates solely as a result of force being applied to this through the traction means.
- Abseiling device according to at least one of the preceding claims, characterised in that the abseiling mechanism is connected with the sheave (14) via the main axis (12).
- Abseiling device according to at least one of the preceding claims, characterised in that the ratchet mechanism (24) is arranged on the main axis (12).
- Abseiling device according to at least one of the preceding claims, characterised in that two ratchet mechanisms (24) are arranged on the abseiling device on opposite sides relative to the sheave (14).
- Abseiling device according to at least one of the preceding claims, characterised in that two ratchet mechanisms (24) with in each case one lever arm (28) are provided.
- Abseiling device according to at least one of the preceding claims, characterised in that the at least one ratchet mechanism (24) has a housing (26) on which the lever arm (28) is arranged, and the gear wheel (30) is connected non-rotatably with the force transmission path between the operating element of the winch mechanism and the sheave (14), in particular being connected non-rotatably with the main axis (12), wherein at least a first and a second pawl (32, 34) are arranged swivelably in the housing (26), wherein the gear wheel (30) and the pawls (32, 34) are configured and arranged such that in the first state of the ratchet mechanism (24) the first pawl (32) engages in the gearing of the gear wheel (30) and the second pawl (34) is spaced apart from the gear wheel (30), so that in the first direction of rotation (38) the first pawl (32), engaging with the gearing, connects the housing (26) non-rotatably with the gear wheel (30), and in the second direction of rotation (36) the first pawl (32), sliding over sloping flanks of the gearing of the gear wheel (30), releases the connection between housing (26) and gear wheel (30), that in the third state of the ratchet mechanism (24), the second pawl (34) engages in the gearing of the gear wheel (30) and the first pawl (32) is spaced apart from the gear wheel (30), so that in the second direction of rotation (36) the second pawl (34), engaging with the gearing, connects the housing (26) non-rotatably with the gear wheel (30) and in the first direction of rotation (38) the second pawl (34), sliding over sloping flanks of the gearing of the gear wheel (30), releases the connection between housing (26) and gear wheel (30), and that in the second state of the ratchet mechanism (24) the first and the second pawl (32, 34) are spaced apart from the gear wheel (30).
- Abseiling device according to claim 8, characterised in that a swivelable adjusting lever (40) is provided on the housing (26) which, by swivelling relative to the housing (26), swivels the pawls (32, 34) into at least two, in particular three, swivel positions in the first or second state, in particular, additionally, in the third state.
- Abseiling device according to claim 9, characterised in that the adjusting lever (40) has on its surface a recess (46) which, viewed in a circumferential direction, is bevelled, wherein the first or the second pawl (32, 34) engages, selectively, in the recess (46), wherein the pawl (32, 34) which engages in the recess (46) engages in the gearing of the gear wheel (30).
- Abseiling device according to claim 9 or 10, characterised in that the adjusting lever (40) is, additionally, mounted so as to be displaceable in an axial direction within the housing (26), wherein the adjusting lever (40) is configured such that an axial movement of the adjusting lever (40) moves the pawls (32, 34) into the second state, independently of the current swivel position of the adjusting lever (40).
- Abseiling device according to claim 10 and 11, characterised in that the recess (46) is bevelled in an axial direction at at least one end.
- Abseiling device according to claim 11 or 12, characterised in that a raised portion (54) is configured and arranged on the abseiling device such that this raised portion (54) displaces the adjusting lever (40) in an axial direction if the housing (26) of the ratchet mechanism (24) passes the location of the raised portion (54).
- Abseiling device according to at least one of the preceding claims, characterised in that the abseiling mechanism (16) has a transmission gearing with a large gear wheel (18), connected with the sheave (14) in a force-transmitting manner, a small gear wheel (20) meshing with the large gear wheel (18) which has a smaller diameter than the large gear wheel (18), and a braking device (22) connected with the small gear wheel (20) in a force-transmitting manner.
- Abseiling device according to claim 14, characterised in that the braking device (22) is configured as a centrifugal brake.
- Abseiling device according to at least one of the preceding claims, characterised in that an additional ratchet mechanism is provided which is connected non-rotatably with a housing (26) of the abseiling device and is connected in a force-transmitting manner with the sheave (14), as well as being switchable, selectively, into a fourth state or fifth state, wherein in the fourth state the additional ratchet mechanism releases the sheave (14) in a first direction of rotation of the sheave which corresponds to the first direction of rotation (38) of the operating mechanism, and in a second direction of rotation of the sheave which corresponds to the second direction of rotation (36) of the operating mechanism fixes this relative to the housing (26), wherein in the fifth state the additional ratchet mechanism releases the sheave (14) in the second direction of rotation of the sheave and in the first direction of rotation of the sheave fixes this relative to the housing (26).
- Abseiling device according to claim 16, characterised in that the additional ratchet mechanism has a housing which is arranged non-rotatably on a housing (10) of the abseiling device, and a toothed gear wheel which is connected non-rotatably with the main axis (12), wherein at least a first and a second pawl are arranged swivelably in the housing of the ratchet mechanism, wherein the gear wheel and the pawls are configured and arranged such that in the fourth state of the additional ratchet mechanism the second pawl engages in the gearing of the gear wheel and the first pawl is spaced apart from the gear wheel, so that in the second direction of rotation of the sheave the second pawl, engaging with the gearing, connects the housing non-rotatably with the gear wheel and in the first direction of rotation of the sheave the second pawl, sliding over sloping flanks of the gearing of the gear wheel, releases the connection between housing and gear wheel, and that in the fifth state of the additional ratchet mechanism the first pawl engages in the gearing of the gear wheel and the second pawl is spaced apart from the gear wheel, so that in the first direction of rotation of the sheave the first pawl, engaging with the gearing, connects the housing of the ratchet mechanism non-rotatably with the gear wheel and in the second direction of rotation of the sheave the first pawl, sliding over sloping flanks of the gearing of the gear wheel, releases the connection between housing and gear wheel.
- Abseiling device according to claim 17, characterised in that the additional ratchet mechanism can also be switched into a sixth state, wherein in the sixth state of the additional ratchet mechanism the first and the second pawl are spaced apart from the gear wheel so that the main axis is freely rotatable in both directions of rotation relative to the housing of the abseiling device.
- Abseiling device according to claim 18, characterised in that a swivelable adjusting lever is provided on the housing of the additional ratchet mechanism which, by swivelling relative to the housing into corresponding swivel positions, swivels the pawls into the fourth, fifth or sixth state.
- Abseiling device according to claim 19, characterised in that the adjusting lever has on its surface a recess which, viewed in a circumferential direction, is bevelled, wherein the first or the second pawl engage, selectively, in the recess, wherein the pawl which engages in the recess engages in the gearing of the gear wheel.
- Abseiling device according to at least one of the claims 18 to 20, characterised in that the additional ratchet mechanism is arranged on the main axis (12), outside of the force transmission path, between the operating element of the winch mechanism and the sheave (14).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009014750 | 2009-11-02 | ||
DE202009015407U DE202009015407U1 (en) | 2009-11-02 | 2009-11-12 | Descender with winch function |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2316532A2 EP2316532A2 (en) | 2011-05-04 |
EP2316532A3 EP2316532A3 (en) | 2012-09-05 |
EP2316532B1 true EP2316532B1 (en) | 2019-03-13 |
Family
ID=41694266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10008430.0A Active EP2316532B1 (en) | 2009-11-02 | 2010-08-12 | Abseiling device with wind function |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2316532B1 (en) |
DE (1) | DE202009015407U1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112138292B (en) * | 2020-10-30 | 2023-11-07 | 亿安居智能科技(广东)有限公司 | Pendulum descent control device and working method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1270672A (en) * | 1960-07-22 | 1961-09-01 | Individual safety elevator | |
GB9001908D0 (en) * | 1990-01-27 | 1990-03-28 | Ferranti Meters Ltd Denis | Safety device |
GB9023703D0 (en) * | 1990-10-31 | 1990-12-12 | Barrow Hepburn Sala Ltd | Fall-arrest apparatus |
DE102005010767B4 (en) * | 2005-03-09 | 2007-01-11 | Mittelmann Sicherheitstechnik Gmbh & Co.Kg | Descender with winch function |
US7780146B2 (en) * | 2007-09-28 | 2010-08-24 | D B Industries, Inc. | Retrieval assembly |
-
2009
- 2009-11-12 DE DE202009015407U patent/DE202009015407U1/en not_active Expired - Lifetime
-
2010
- 2010-08-12 EP EP10008430.0A patent/EP2316532B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2316532A2 (en) | 2011-05-04 |
EP2316532A3 (en) | 2012-09-05 |
DE202009015407U1 (en) | 2010-02-18 |
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