EP2487130A1 - Protection statique contre les chutes pour un ascenseur à plateforme et ascenseur à plateforme en étant équipé - Google Patents

Protection statique contre les chutes pour un ascenseur à plateforme et ascenseur à plateforme en étant équipé Download PDF

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Publication number
EP2487130A1
EP2487130A1 EP11154296A EP11154296A EP2487130A1 EP 2487130 A1 EP2487130 A1 EP 2487130A1 EP 11154296 A EP11154296 A EP 11154296A EP 11154296 A EP11154296 A EP 11154296A EP 2487130 A1 EP2487130 A1 EP 2487130A1
Authority
EP
European Patent Office
Prior art keywords
latching
rack
latch
fall
movement
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
EP11154296A
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German (de)
English (en)
Other versions
EP2487130B1 (fr
Inventor
Gerhard Tanch
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.)
Siemens AG
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Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP11154296.5A priority Critical patent/EP2487130B1/fr
Publication of EP2487130A1 publication Critical patent/EP2487130A1/fr
Application granted granted Critical
Publication of EP2487130B1 publication Critical patent/EP2487130B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/26—Positively-acting devices, e.g. latches, knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong

Definitions

  • the invention relates to a static fall protection for a platform lift, which has a mast and a liftable and lowerable guided lifting platform, wherein the fall protection has a latching device with latching recess and latch, one of which is movable relative to the other, and wherein the latch between a Entrastposition in which it is not engaged with a latching recess, and a latching position in which it is in engagement with a latching recess, is movable. It also refers to a platform lift equipped with fall protection.
  • elevators which consist essentially of a mast and a liftable and lowered guided lifting platform.
  • the mast can be arranged on the ground, but also attached to the already created building in the sense of a climbing frame.
  • An example of this is the DE 10 2006 029 653 B4 refer to.
  • the lifting platform own drives can be provided. Instead, the lifting and lowering can also be done with the help of a crane.
  • platform lifts whose lifting platforms are to serve as a working platform, it is necessary not only to secure them in a certain working position, but also during the movement in the vertical direction.
  • dynamic fall protections are provided, as they are for example from the DE 31 14 602 A1 and DE 43 02 197 A1 result.
  • platform lifts in the form of climbing frames it is also known to provide only a static fall protection, ie the lifting platform is only at rest, ie secured against crash in certain positions. There is no backup during the vertical movement of the lifting platform.
  • Such platform lifts are only suitable for the provision of work platforms in certain, then crash-secured positions and possibly admitted for the transport of objects. Examples of platform lifts with such fall protection are the US 2,142,651 A and EP 0 034 819 A2 refer to.
  • latching pawls are provided at certain heights on the building fixed to the building, which project into locking positions and are pivotable upwards in a Entrastposition. In secured positions, the detents engage in recesses provided in the lifting platform.
  • a disadvantage of this type of static fall protection is that for the positioning of the lifting platform at different heights a corresponding number of movable latches is required and that the latches have such a distance that a crash-secured position of the lifting platform is possible only at greater distances.
  • the locking in the lifting operation is difficult, and for lowering the pawls must be removed from the range of motion of the lifting platform.
  • the invention has for its object to make a static fall protection for platform lifts so that a snap of the fall protection can be easily and safely produced and in any position of the lifting platform. Furthermore, retrofitting existing platform lifts should be possible in a simple manner.
  • the basic idea of the invention is first to provide the locking mechanism with the latch - unlike in the prior art - for attachment to the lifting platform and the latching mechanism to assign a rack for vertical attachment to the mast, so that over the height of the platform lift a variety closely mutually recessed detent recesses are provided which allow locking between the detent pawl and recess in virtually every position of the lifting platform. This also applies to the case that the latch abuts the latching recess provided on the upper latching tooth. Due to the displaceability of the latch in the direction along the rack and the special design of the guide means for the latch it is ensured that it comes even to a complete engagement between the latch and latching recess, i.
  • the tooth pitch of the rack can meet the respective requirements, in particular the legal requirements for the maximum allowable crash path to be adjusted. It is expedient to have a tooth pitch which is in the range of 5 to 25 mm, preferably 10 to 20 mm, more preferably 10 to 15 mm. In such a pitch, the recesses are so large that on the one hand can retract a sufficiently sized latch into the detent position, on the other hand, but the individual locking teeth have sufficient strength to catch the lifting platform safely in a crash can.
  • a manual operating device for the movement of the actuating device for the purpose of producing the engagement between the detent pawl and the detent recess, a manual operating device may be provided which is preferably designed so that the detent pawl, after mounting the fall arrest device, can be moved from outside the lifting platform, i. can be brought into the rest position without their entering.
  • an electric, preferably electromotive drive, but also a pneumatic or hydraulic drive for the movement of the actuator may be provided, which is then operated by means of a switch. He should then be mounted so that even in this case a locking between the latch and latching recess without entering the lifting platform is possible.
  • the actuating device is pivotally mounted between the initial and final positions on a pivot bearing.
  • This ensures a simple and reproducible guidance of the actuator. This does not exclude that other guides for the movement of the actuator, such as handlebar guide or the like come into question.
  • the pivot axis should preferably extend perpendicular to the plane of movement of the latch.
  • the guide device is designed as a slide guide with a sliding recess into which engages an engagement element provided on the latching pawl.
  • the movement of the latch can be designed so that the latch comes in case of a collision with the upper locking tooth by movement of the actuator from the beginning to the end position in a locking position, the latch not only a movement across the Rack runs, but also in the fall direction is taken.
  • the link recess may be formed, for example, as a slot slot with a slot beginning and a slot end, wherein in the slot end facing slot half a preferably directed to the rack projection is present, which is shaped such that it upon movement of the actuator in the end position entrainment of the latch in the intended crash direction causes.
  • the engagement element of the latch engages when the latch abuts the latching recess provided on the upper detent tooth and consequently can no longer move in the direction of the rack.
  • the projection ensures that then the pawl is taken in the direction of fall and placed in a position in which they can be moved to the intended locking position.
  • the sliding recess should at least in the area in which the engagement element is located when the latch assumes the detent position, the engagement element on both sides such that the latch is prevented in a movement transverse to the longitudinal axis of the rack, so is blocked.
  • these conditions should also be given when the latch is in the unlatched position.
  • the guide device is designed such that the detent pawl assumes a maximum possible detent depth in relation to the detent recess in the detent position. In this way it is ensured that the latch has a maximum support surface on the latching position in the underlying latching tooth.
  • the rack has a sawtooth shape with ratchet teeth, the opposite of the fall direction tooth flanks extend perpendicular to the direction of fall, i. they run horizontally when the rack is mounted vertically on the mast.
  • An expedient embodiment of the guide of the latching pawl is characterized in that the latching pawl is pivotally articulated to a guide arm, which is movable about a pivot axis extending transversely to the longitudinal axis of the rack pivot axis, wherein the pivot axis preferably extends perpendicular to the plane of movement of the latch.
  • the guide arm should be directed in particular to the rack. In this way it is ensured that the pawl moves in a pivoting of the guide arm in the direction of fall when this is imposed on the latch by the guide means on the actuator.
  • the latch has a spring bias in the direction of the stop on the holder.
  • the latch has a spring bias also in the direction of the rack in order to ensure cooperation with the guide device even when engaging in the recess according to a designated movement.
  • the actuating device is movably mounted on a bearing body, which is guided relative to the holder from an initial position with a movement component parallel to the longitudinal axis of the rack movable, preferably the mobility in the direction of fall through an initial position defining stop is limited.
  • the movable mounting of the actuator allows greater freedom in the design of the guide device and simultaneously ensures the achievement of the detent position of the latch.
  • the arrangement of the pivot bearing and the design of the guide device should be such that the end position of the actuator and thus the detent position of the latch is reached only after a movement of the bearing body against the intended direction of fall.
  • the bearing body should be spring-loaded in the intended direction of fall, so that it normally assumes an initial position and is only moved out of its initial position, if it requires the formation of the guide device.
  • unlatched and / or latching position of the latch is detected directly or indirectly by sensors and can be detected by a preferably optical and / or acoustic signal.
  • a preferably optical and / or acoustic signal In this way, the users of the platform lift are informed whether the lifting platform is crash-protected and can therefore be entered.
  • the access of the lifting platform is prevented by a barrier until the latch of the fall protection has reached its locking position.
  • a corresponding fuse is achieved when a display device is present, which generates a visually and / or acoustically perceptible signal when the detent mechanism is at rest relative to the rack until the detent pawl is in the detent position.
  • This signal is then a kind of warning signal intended to prevent users from entering the lifting platform before the latch engages.
  • the invention further relates to a platform lift with at least one fall protection, wherein the rack are mounted in such a vertical manner on the mast and the latching mechanism on the lifting platform, that the latch is engageable with a latching recess of the rack and thus in the locked position. If the mast - as is common practice - several, in particular two masts, the lifting platform should be secured by a fall protection according to the invention per mast.
  • the figures show a fall protection 1, which consists essentially of a right-hand rack 2 and a left-side latching mechanism 3.
  • the rack 2 is shown here only partially and is intended to be fixed to one of the masts of the mast of a platform lift stationary and in vertical alignment. The rack 2 then extends over the entire stroke range of the lifting platform.
  • the latching mechanism 3 has a retaining plate 4, which is intended to be mounted in the position shown fixed to the device on the lifting platform of the platform lift via fasteners, not shown here. In this arrangement, the latching mechanism 3 moves with the lifting platform according to the in FIG. 1 shown, extending parallel to the longitudinal axis of the rack 2 double arrow A.
  • the rack 2 has a rack body 5, of which a plurality of stacked, identical ratchet teeth - for example denoted by 6 - protrude, which are directed to the latching mechanism 3.
  • the ratchet teeth 6 form a sawtooth profile, each with an upper latching surface - exemplified by 7 - and an underlying tooth slope - exemplified by 8 -, which is directed to the beginning of the underlying latching surface 7, so that it is a triangular-shaped recess at vertically adjacent ratchet teeth 6 9 training.
  • the latching mechanism 3 has a latching pawl 10, which has a substantially vertically extending pawl leg 11, at the lower end of which is approximately adapted to the shape of the latching recesses 9 and therefore triangular in side view, with its tip directed towards the rack 2 Ratchet tooth 12 is formed.
  • the upper end of the pawl leg 11 is pivoted about a pivot bearing 13 at the free end of a guide arm 14.
  • the guide link 14 is in a pivot bearing 15 about a perpendicular to The drawing plane extending pivot axis pivotally mounted and extends substantially horizontally in the direction of the rack 2.
  • the pivot bearing 15 is seated on a bearing body 16 which is part of the Rastmechanimusses 3.
  • a leg spring 17 is attached, which is deflected at the junction between the two and ensures that the latch 10 is subject to a spring bias, which is directed to the rack 2.
  • a tension spring 18 is attached to the free end of the guide arm 14, which is under tensile prestress and the other end is fixed to a stop block 19.
  • the stop block 19 is fixed to the support plate 4 and limits the movement of the latch 10 and the guide arm 14 upwards.
  • an actuating disc 20 is mounted via a pivot bearing 21 with perpendicular to the plane extending pivot axis.
  • the actuating disc 20 has the shape of a rectangular circular section with a circular outer contour 22 which has a constant radius with respect to the pivot axis.
  • Formed in the actuating disk 20 is a guide device in the form of a slot slot 23, in which a protruding from the detent pawl 10, circular engagement pin 24 from the back of the actuating disk 20 ago encloses.
  • the link slot 23 has a slot beginning 25, from which an outer guide track 26 and an inner guide track 27 go out.
  • the outer guideway 26 has an arcuate shape whose radius increases steadily from the slot start 25 with respect to the pivot bearing 21 to a slot end 28.
  • the inner guideway 27 forms a circular arc of constant radius with respect to the pivot bearing 21 to a nose-shaped projection 29 which is directed to the outer guideway 26. From the tip of the projection 29, the inner guide track 27 extends again in a circular arc on a larger radius up to the Slotted end 28.
  • the slotted slot 23 has in the region of the slot start 25 and the slot end 28 has a width which corresponds approximately to the diameter of the engagement bolt 24, so that the engagement bolt 24 is guided on both sides except for a game.
  • the bearing body 16 is guided vertically displaceably between two guide rails 30, 31.
  • the guide rails 30, 31 have mutually facing guide surfaces which extend parallel and vertically and provide for a longitudinal axis of the rack 2 parallel to the displaceability of the bearing body 16.
  • a bottom stop bar 32 defines its initial position, from which it is movable upwards. At its top, it is acted upon by a compression spring 33 in the predetermined direction of fall, which is supported on a support strip 34 fixedly connected to the support plate 4.
  • FIG. 1 shows the fall protection 1 with the latch 10 in Entrastposition.
  • the latching mechanism 3 is displaceable along the rack 2, ie, a lifting platform provided with the latching mechanism 3 can be raised or lowered vertically along the rack 2.
  • FIG. 1 shows the starting position for the locking.
  • the actuating disk 20 is pivoted downwards, ie clockwise about the pivot bearing 21. This is done by means of an electric motor, not shown here. Instead, however, other motor shapes can be used, for example, solenoids or pneumatic or hydraulic cylinders. Due to acting on the latch 10, directed to the rack 2 preload the engagement pin 24 initially remains in contact with the outer track 26.
  • the latch 10 Due to the downward shift, the latch 10 has the distance between the bottom of the pawl tooth 12 and locking surface 7 in the situation according to FIG. 2 lifted from the stop block 19 (see double arrow B in FIG. 3 ).
  • the free path between the upper end of the latch 10 and the bottom of the stop block 19 is the crash path around which the lifting platform sags down, they should have no other stop.
  • only the rack 2 with the lower latching tooth 6, the latching pawl 10 and the stop block 19 with the holding plate 4 are subjected to the force of the crash forces. All other elements are not affected.
  • the maximum crash path is here 12 mm and corresponds to the tooth pitch of the rack 2. It is achieved when the tip of the pawl tooth 12 when pivoting in the direction of the rack 2 exactly on a tooth tip of a the ratchet teeth 6 abuts. In this case, the latch 10 is moved by the amount of the tooth pitch down with the result that the latch 10 is also removed by a corresponding amount of the stop block 19.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Transmission Devices (AREA)
EP11154296.5A 2011-02-14 2011-02-14 Protection statique contre les chutes pour un ascenseur à plateforme et ascenseur à plateforme en étant équipé Not-in-force EP2487130B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11154296.5A EP2487130B1 (fr) 2011-02-14 2011-02-14 Protection statique contre les chutes pour un ascenseur à plateforme et ascenseur à plateforme en étant équipé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11154296.5A EP2487130B1 (fr) 2011-02-14 2011-02-14 Protection statique contre les chutes pour un ascenseur à plateforme et ascenseur à plateforme en étant équipé

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EP2487130A1 true EP2487130A1 (fr) 2012-08-15
EP2487130B1 EP2487130B1 (fr) 2013-06-05

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2526315C1 (ru) * 2013-06-05 2014-08-20 Общество с ограниченной ответственностью "Арконстрой" Ловитель для грузового подъемника
CN109057311A (zh) * 2018-09-11 2018-12-21 杨洪 附着升降脚手架双保险防坠器
CN109335913A (zh) * 2018-12-07 2019-02-15 桂林电子科技大学 一种电梯应急安全装置
CN114134280A (zh) * 2021-11-24 2022-03-04 中冶南方工程技术有限公司 一种待机位氧枪防坠装置
CN114655810A (zh) * 2022-03-23 2022-06-24 金华六和机械有限公司 一种升降机用层间驻车防下坠机构及控制方法
CN115285905A (zh) * 2022-08-01 2022-11-04 安歌科技(集团)股份有限公司 一种升降机安全死点机构
CN115773021A (zh) * 2022-11-29 2023-03-10 中国十七冶集团有限公司 一种超大剧院升降舞台防护设备
WO2024067195A1 (fr) * 2022-09-28 2024-04-04 深圳市海柔创新科技有限公司 Ensemble antichute et dispositif de levage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109019457A (zh) * 2018-08-22 2018-12-18 邹锋高 一种高空作业平台的自动行走装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142651A (en) 1937-11-16 1939-01-03 Michelson Max Scaffolding
EP0034819A2 (fr) 1980-02-21 1981-09-02 Streif Ag Echafaudage mobile
DE3114602A1 (de) 1981-04-10 1984-04-26 VEB Kombinat für Baureparaturen und Rekonstruktion, DDR 7010 Leipzig Einrichtung fuer arbeitsgerueste mit heb- und senkbarer arbeitsbuehne
DE4302197A1 (de) 1993-01-27 1994-07-28 Peri Gmbh Klettervorrichtung, insbesondere für ein Klettergerüst
JPH09317162A (ja) * 1996-05-31 1997-12-09 Sorimachi Seisakusho:Kk 足場装置
GB2426278A (en) * 2005-05-19 2006-11-22 Sgb Services Limited A climbing formwork system
WO2007134441A1 (fr) * 2006-05-19 2007-11-29 Hydro Mobile Inc. Dispositif de freinage pour assemblage de plate-forme élévatrice
DE102006029653B4 (de) 2006-06-28 2009-02-12 Doka Industrie Gmbh Hubplattform und Verfahren zum Aufbauen einer Hubplattform

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142651A (en) 1937-11-16 1939-01-03 Michelson Max Scaffolding
EP0034819A2 (fr) 1980-02-21 1981-09-02 Streif Ag Echafaudage mobile
DE3114602A1 (de) 1981-04-10 1984-04-26 VEB Kombinat für Baureparaturen und Rekonstruktion, DDR 7010 Leipzig Einrichtung fuer arbeitsgerueste mit heb- und senkbarer arbeitsbuehne
DE4302197A1 (de) 1993-01-27 1994-07-28 Peri Gmbh Klettervorrichtung, insbesondere für ein Klettergerüst
JPH09317162A (ja) * 1996-05-31 1997-12-09 Sorimachi Seisakusho:Kk 足場装置
GB2426278A (en) * 2005-05-19 2006-11-22 Sgb Services Limited A climbing formwork system
WO2007134441A1 (fr) * 2006-05-19 2007-11-29 Hydro Mobile Inc. Dispositif de freinage pour assemblage de plate-forme élévatrice
DE102006029653B4 (de) 2006-06-28 2009-02-12 Doka Industrie Gmbh Hubplattform und Verfahren zum Aufbauen einer Hubplattform

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2526315C1 (ru) * 2013-06-05 2014-08-20 Общество с ограниченной ответственностью "Арконстрой" Ловитель для грузового подъемника
CN109057311A (zh) * 2018-09-11 2018-12-21 杨洪 附着升降脚手架双保险防坠器
CN109057311B (zh) * 2018-09-11 2023-09-12 杨洪 附着升降脚手架双保险防坠器
CN109335913A (zh) * 2018-12-07 2019-02-15 桂林电子科技大学 一种电梯应急安全装置
CN109335913B (zh) * 2018-12-07 2023-12-08 桂林电子科技大学 一种电梯应急安全装置
CN114134280A (zh) * 2021-11-24 2022-03-04 中冶南方工程技术有限公司 一种待机位氧枪防坠装置
CN114134280B (zh) * 2021-11-24 2023-03-28 中冶南方工程技术有限公司 一种待机位氧枪防坠装置
CN114655810A (zh) * 2022-03-23 2022-06-24 金华六和机械有限公司 一种升降机用层间驻车防下坠机构及控制方法
CN114655810B (zh) * 2022-03-23 2023-07-21 金华六和机械有限公司 一种升降机用层间驻车防下坠机构及控制方法
CN115285905A (zh) * 2022-08-01 2022-11-04 安歌科技(集团)股份有限公司 一种升降机安全死点机构
WO2024067195A1 (fr) * 2022-09-28 2024-04-04 深圳市海柔创新科技有限公司 Ensemble antichute et dispositif de levage
CN115773021A (zh) * 2022-11-29 2023-03-10 中国十七冶集团有限公司 一种超大剧院升降舞台防护设备

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