EP1351878A1 - Notbrems- und stossdämpfungsvorrichtung für einen aufzug oder eine aufgehängte last - Google Patents
Notbrems- und stossdämpfungsvorrichtung für einen aufzug oder eine aufgehängte lastInfo
- Publication number
- EP1351878A1 EP1351878A1 EP02732111A EP02732111A EP1351878A1 EP 1351878 A1 EP1351878 A1 EP 1351878A1 EP 02732111 A EP02732111 A EP 02732111A EP 02732111 A EP02732111 A EP 02732111A EP 1351878 A1 EP1351878 A1 EP 1351878A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- cable
- emergency braking
- braking device
- nacelle
- 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
Links
Classifications
-
- 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
- B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/02—Safety gear for retaining load-engaging elements in the event of rope or cable breakage
Definitions
- the present invention relates to an emergency braking device for any vehicle, load or object, towed or provided by at least two cables 5 whose voltages under normal conditions are equivalent. It also relates to a shock absorption device which can be associated with the previous device or with another emergency braking device. The invention likewise relates to any vehicle, load or object, towed or provided by at least one cable, provided with an emergency braking device and which can be provided with a shock absorbing device.
- Cable cars such as trolleys or funiculars traveling on an oblique plane, as well as elevators, freight elevators, facade maintenance nacelles or crane hooks traveling vertically, are advantageously provided with traction systems comprising at least one pair of cables, each of said cables being subjected to an equivalent tensile force under normal conditions.
- Application WO 01/38217 describes an elevator or a nacelle 20 for maintaining the facade provided, at each of its ends, with a winch on board with two cables and differential means for balancing the tensile forces on these two cables.
- Other means of balancing the forces on two cables can be used, for example by suspending the nacelle or the vehicle to be towed from at least one cable passing through a pulley or a block fixed to the vehicle or to the nacelle thus creating minus a pair of suspension strands.
- the cables considered here may be cables used for pulling said object or cables intended solely for ensuring the emergency braking of this object, the traction means then being of another type.
- an emergency braking device there capable of being actuated in the event of a cable break in a pair of cables.
- the mass constituted by the nacelle In addition, in the event of a cable break, the mass constituted by the nacelle, the winches as well as the personnel and the equipment installed in the nacelle is suddenly accelerated, until the emergency braking device has worked. . Since the emergency braking device generally works by jamming or blocking a jaw on an intact cable, the stop imposed by this device is extremely abrupt with very strong deceleration. This stopping shock can be harmful both for the personnel in the nacelle and for the material and the equipment which undergoes it.
- a first object of the invention is therefore to propose an emergency braking device capable of braking any object, load or vehicle towed by at least one pair of cables whose traction forces are equivalent, which is improved compared to the devices known.
- Another object of the invention is that the above emergency braking device is able to operate without an external energy source. Another object of the invention is that the above emergency braking device does not require any fixed structural element for its operation.
- Yet another object of the invention is that the above emergency braking device be of simple construction, so as to be capable of reliable and rapid operation, limiting as far as possible the fall of the object, of the load or the towed or insured vehicle.
- Another object of the invention is to propose a damping device capable of eliminating the mentioned problems encountered in the event of emergency braking.
- Yet another object of the invention is to provide a vehicle provided with at least one emergency braking device as above.
- Yet another object of the invention is to propose a vehicle provided with an emergency braking device as well as with a damping device.
- FIG. 1 represents a portion of a load, here a suspended nacelle, equipped with a damping device arranged according to a first embodiment
- FIG. 2 represents the same load equipped with a damping device arranged according to a second embodiment
- FIG. 3 represents a load equipped with a damping device arranged according to a third embodiment
- FIG. 4 represents a load equipped of a damping device arranged according to a fourth embodiment
- FIG. 5 diagrammatically represents a first portion of a braking device according to a preferred embodiment of the invention
- FIG. 6 diagrammatically represents a second portion of the braking device of the previous figure.
- Figure 1 shows a nacelle 1 of which there is a face 10 of a first end.
- the nacelle 1 comprises a winch 2 of which only the two drums 20 and 21 are distinguished here, each responsible for winding or unwinding one of the cables 30 or 31 from a set of suspension cables 3.
- the ends cables 30 and 31 opposite those wound on the drums 20 and 21 are fixed at fixed points, for example a suspension beam.
- Such a nacelle corresponds to that described in application WO 01/38217 mentioned previously.
- the nacelle 1 which must be considered here as any suspended load, further comprises a plate or plate 4 provided with an extension acting as a slide 40, slidably mounted in a slide acting as a slide 41, itself fixed to the wall 10 of the nacelle 1.
- the plate 4 is therefore able to move, in the vertical direction, by a determined value relative to the nacelle 1.
- the end of the slide 40 opposite to that fixed to the plate 4 is fixed to a cross 42 each end of which supports a shock absorber 43, 44, acting between said end of the cross member and a fixing point 430, 440 secured to the wall 10 of the nacelle 1.
- An emergency braking device 5 comprises a first brake device 50, capable of locking the cable 30 as well as a second brake device 51 acting on the cable 31.
- Each of the brake devices 50 and 51 is actuated by a detector, respectively 52 and 53.
- the detectors 52 and 53 can be of any known type, detecting for example a loss of voltage, a strand slack or overspeed, being mechanical, electronic or electromechanical.
- each detector may be able to control, in the event of an incident, the emergency braking of the two braking devices.
- the plate 4 is shown here as consisting of a plate carrying the various components described on one side; in fact it will preferably be covered with a housing in order to protect these components.
- the other end of the nacelle 1 is equipped in the same way.
- the broken cable detector in the case where it is a slack or loss of tension detector and / or the detector mounted on the other cable, in the case of an overspeed detector act to control the actuation of the emergency braking devices 50 and / or 51.
- the stopping shock is strongly amortized, which is favorable for both personnel and on-board equipment.
- Figure 1 shows that the plate 4 is connected to the nacelle 1 by two shock absorbers 43 and 44 operating under compression. It is obvious that one could just as easily have a single shock absorber, or more than two, able to work in compression as here or in traction.
- the shock absorber (s) can be of any known type, for example hydraulic, fluid or gas, or spring, or with elastomer compression in the case of shock absorbers operating under compression.
- Figure 2 first shows a variant of the nacelle drive device where the winch 2 is no longer arranged on the nacelle 1, but on a fixed part of the building in front of which the nacelle is moved.
- the two cables 30 and 31 represent the two strands of the same cable passing through a return pulley 23, mounted on the nacelle 1 as described below.
- the figure also shows a second embodiment of the damping device where the emergency braking device 5 as well as the return pulley 23 are mounted on the mobile plate 4.
- a slide device 45 allows the relative movement of the plate 4 with respect to the nacelle or to the suspended load 1.
- the plate 4 is provided with a cross member 46, the two ends of which are connected to the attachment points 430 and 440 of the nacelle 1 by shock absorbers 43 and 44.
- the operation of the device is absolutely similar to what has been described above, the difference between the two embodiments residing in the fact that for the second embodiment of FIG. 2, the mass undergoing an impact when stopped is more important than for the first embodiment, since more elements are mounted on the plate 4.
- FIG. 2 also shows a hook 11 in order to clearly represent the fact that the devices according to the invention can be applied to any suspended load.
- Figure 3 shows yet another embodiment where the emergency braking device 5 as well as the damping device are transferred to one end of a support structure 6 in the form of a swan neck rigidly fixed to the nacelle 1
- This type of nacelle construction is generally used for very long nacelles on which the cable suspension points are not arranged at the two ends of the nacelle but are carried towards the interior of the nacelle.
- the axes of the motors 22, winches 2 and drums 20 and 21, or return pulleys are arranged perpendicular to the longitudinal axis of the nacelle 1.
- the emergency braking device 5 comprises, as before, a brake device 50.51 and a detector 52.53 for each cable, arranged on a plate 4, mounted movably relative to a portion 61 of the support 6.
- One or more shock absorbers 62, mounted between the plate 4 carrying the braking device 5 and a fixed part 63 of the support 6, fulfill the same function as that described above.
- FIG. 3 shows a variant of the movable fixing device of the plate 4 on the support structure 6, respectively on the nacelle 1.
- the relative displacement of the plate 4 relative to the portion 61 of the support 6 is obtained by a set of links 47 forming a deformable parallelogram.
- FIG. 4 Yet another embodiment is shown in Figure 4 where the winch 2, comprising the two drums 20 and 21 driven by the motor 22 are arranged on a fixed part of the installation, for example on the roof of the building served by the nacelle 1.
- the two drums 20 and 21 are driven by a single motor 22, being coupled together by a differential device 24, as described for example in application WO 01/38217.
- the braking device 5 comprising the brakes 50 and 51 as well as the detectors 52 and 53, operating as described above, is also arranged on a fixed part. of the installation, respectively on the same fixed part as that where the winch 2 is mounted.
- the figure also shows two variants in the placement of the damping device.
- the cable 30 is connected to the end face 10 of the nacelle 1 by means of a plate 4, the point of attachment of the cable to the plate being marked at 302, which plate 4 is suspended from the nacelle by a shock absorber 48 connected to a fixed point 430 of the nacelle.
- the braking device relating to the cable 31 is mounted on a plate 4, suspended from a fixed point 450 of the fixed part of the installation by one or more shock absorbers 49.
- the end of the cable 31 is directly fixed to the nacelle 1 by the fixing point 311.
- the two cables 30 and 31 are connected to the nacelle in the same way, either directly, by the points 301 and 302, the plate 4 then supporting the two detectors 52, 53 and the two emergency brakes 50, 51, or else via the plate 4, as shown by the fixing points 302 and 312.
- Figure 5 shows a portion of such a device in which there is a first soft strand detector mounted on one of the cables and acting on the other cable for braking.
- the system is highly schematized in order to better understand how it works.
- the emergency brake 51 here comprises two brake shoes 510, arranged on either side and at least partially enclosing the cable 31. Said shoes are provided with guide ribs 511, able to cooperate with corresponding oblique grooves 512 arranged in a brake lever 513 as well as in a support plate 514.
- the brake lever 513 is pivotable about an axis 515 fixed to the plate 4, being pushed in the direction indicated by the arrow B by a spring 516 taking pressing on a fixed portion of the plate 4.
- the other end of the brake lever 513 is connected to the detector 52, itself consisting of a control lever 520 pivotally mounted around an axis 521 fixed to the plate 4 , a first end of udit lever carrying a wheel 522 bearing against the cable 30, the other end of this lever being connected to the brake lever 513 by a link 523.
- the caster 522 In the event of a break in the cable 30, the caster 522 is no longer retained in position and the control lever 520 pivots about the axis 521 in the direction of the arrow A.
- the lever braking 513 By the play of the levers and links, the lever braking 513 is no longer retained and can pivot in the direction of arrows B and C under the action of spring 516, this pivoting controlling the bringing together of the two jaws 510, by the cooperation of the ribs 511 and the grooves 512 of the brake lever 513 and of the support plate 514.
- FIG. 6 shows the corresponding portion of the braking device, comprising the second soft strand detector 53, capable of detecting the tension state of the cable 31 and capable of controlling the brake 50 on the strand 30.
- the loss of tension of the cable 31 allows the lever 530 to pivot according to arrow A, which allows the brake lever 503 to pivot around the axis 505 under the action of the spring 506, thus enabling the two jaws 500 guided by the ribs 501 and the grooves 502 to be brought together.
- the braking device acts immediately to block the downward movement of the vehicle or of the nacelle by blocking on the other cable.
- the emergency braking device as just described fully meets the conditions set, namely, being able to operate without an external energy source or any external element, and the construction of which is simple thus making its operation safe and fast.
- the plate 4 carrying the braking device has been described as being connected to the nacelle by a set of slides 40 and 41 or by connecting rods 47. Any mechanical means making it possible to ensure relative movement between the plate 4 and the nacelle can be used.
- the transmission between the soft strand detector 52 or 53 and the braking device 50 or 51 has been described according to a preferred embodiment; other constructive arrangements than those described can be used producing the same effect.
- damping device as well as the emergency braking device have been described as being mounted on a nacelle intended for the maintenance of facades; more generally, such devices can be mounted in order to function as described, on any vehicle, load or object towed by at least one pair of cables whose voltages are equivalent, such as cable cars, funiculars, elevators, load or elevators.
- vehicle is also meant any mobile system, without it being necessary for this system to transport a person.
- the damping device described can be mounted on a vehicle fitted with an emergency braking device different from that described above, the damping device even being able to work in the manner described when the vehicle or the load is towed or suspended by a single cable.
- the described emergency braking device can be mounted on a vehicle not comprising a damping device or a damping device different from one of those described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Emergency Lowering Means (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Systems And Boosters (AREA)
- Control And Safety Of Cranes (AREA)
- Vibration Dampers (AREA)
- Vehicle Body Suspensions (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH682001 | 2001-01-18 | ||
CH68012001 | 2001-01-18 | ||
CH11902001 | 2001-06-28 | ||
CH119001 | 2001-06-28 | ||
PCT/CH2002/000021 WO2002057176A1 (fr) | 2001-01-18 | 2002-01-14 | Dispositifs de freinage d'urgence et d'amortissement de chocs pour un ascenseur ou charges suspendu |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1351878A1 true EP1351878A1 (de) | 2003-10-15 |
EP1351878B1 EP1351878B1 (de) | 2004-11-10 |
Family
ID=25700234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02732111A Expired - Lifetime EP1351878B1 (de) | 2001-01-18 | 2002-01-14 | Notbremsvorrichtung für ein kabelgezogenes oder aufgehängtes fahrzeug und fahrzeug mit einer notbremsvorrichtung |
Country Status (9)
Country | Link |
---|---|
US (1) | US6942070B2 (de) |
EP (1) | EP1351878B1 (de) |
JP (1) | JP3984915B2 (de) |
CN (1) | CN1235791C (de) |
AT (1) | ATE282004T1 (de) |
DE (1) | DE60201883T2 (de) |
ES (1) | ES2231697T3 (de) |
HK (1) | HK1063305A1 (de) |
WO (1) | WO2002057176A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6942070B2 (en) * | 2001-01-18 | 2005-09-13 | Plumettaz Sa | Emergency braking and shock absorbing device for a lift or suspended load |
CN100445193C (zh) * | 2004-04-28 | 2008-12-24 | 三菱电机株式会社 | 电梯装置 |
BRPI0601926B1 (pt) * | 2005-06-17 | 2018-06-12 | Inventio Aktiengesellschaft | Dispositivo de pára-quedas do freio |
ES2543412T3 (es) * | 2006-03-16 | 2015-08-19 | Thyssenkrupp Aufzugswerke Gmbh | Accionamiento de ascensor con un motor eléctrico |
EP2041235B1 (de) * | 2006-06-07 | 2013-02-13 | ExxonMobil Upstream Research Company | Kompressierbare gegenstände in kombination mit einer bohrflüssigkeit zur bildung eines bohrschlamms variabler dichte |
US8789682B2 (en) * | 2011-07-11 | 2014-07-29 | Tait Towers Manufacturing, LLC | Engagement article, load positioning system, and process for positioning loads |
US9120645B2 (en) * | 2011-11-16 | 2015-09-01 | Spacelift Products, Inc. | Control system for a platform lift apparatus |
CN102674161B (zh) * | 2012-05-31 | 2015-12-16 | 北京市建筑工程研究院有限责任公司 | 一种独立防坠系统 |
DE202012009836U1 (de) * | 2012-10-15 | 2014-01-16 | Liebherr-Werk Ehingen Gmbh | Vorrichtung zur Beförderung von Personen mittels eines Krans - Kran mit Vorrichtung zur Beförderung von Personen |
JP6045958B2 (ja) * | 2013-03-29 | 2016-12-14 | 日立Geニュークリア・エナジー株式会社 | 免震吊上装置 |
CN106458539B (zh) * | 2014-05-14 | 2018-09-11 | 三菱电机株式会社 | 紧急停止装置 |
US9750959B2 (en) * | 2015-10-21 | 2017-09-05 | Msa Technology, Llc | Cable grab device |
DE102015016351A1 (de) * | 2015-12-17 | 2017-08-10 | MiniTec GmbH & Co. KG | Sicherheitseinrichtung zur Vermeidung unkotrollierter Bewegungen von Lasten |
EP3398896B1 (de) | 2017-05-05 | 2021-03-31 | KONE Corporation | Aufzugsanordnung und aufzug |
US10099904B1 (en) | 2017-05-25 | 2018-10-16 | James Zaguroli, Jr. | Safety arrangement for a hoist |
EP3456674B1 (de) * | 2017-09-15 | 2020-04-01 | Otis Elevator Company | Schlaffheitsdetektionssystem eines aufzugsspannelements und verfahren zur durchführung eines not-aus-betriebs eines aufzugssystems |
DE102021131264A1 (de) | 2021-11-29 | 2023-06-01 | Liftkon GmbH | Vorrichtung und Verfahren zur Vermeidung einer Aufweitung der Wicklungen eines Zugmittels bei Lastwechsel |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2397358A1 (fr) * | 1977-07-13 | 1979-02-09 | Sscm | Ascenseur comportant un frein de securite et un dispositif de limitation de la deceleration de freinage |
JPS5584729A (en) * | 1978-12-22 | 1980-06-26 | Hitachi Ltd | Drop down preventive device for waving boom |
US4498563A (en) * | 1982-08-23 | 1985-02-12 | Trahan Wilson J | Wireline catcher |
FR2561226B1 (fr) * | 1984-03-16 | 1986-10-31 | Novatome | Dispositif de securite d'un appareil de levage d'une charge |
SU1470653A1 (ru) * | 1987-02-11 | 1989-04-07 | Одесский Государственный Педагогический Институт Им.К.Ушинского | Предохранительное устройство дл удерживани грузозахватного органа с тросовым подвесом |
US5366045A (en) * | 1993-09-03 | 1994-11-22 | Eaton Corporation | Brake mechanism for a storage and retrieval vehicle |
ES2116153B1 (es) * | 1994-05-30 | 1999-05-16 | Ganchos De Seguridad S L | Sistema de seguridad para aparatos elevadores. |
JPH08245132A (ja) * | 1995-03-14 | 1996-09-24 | Hitachi Ltd | 流体圧エレベータ |
JPH09140020A (ja) * | 1995-11-13 | 1997-05-27 | Kandenko Co Ltd | ケーブル布設管路検査用の張力付与装置 |
JPH09215145A (ja) * | 1996-02-01 | 1997-08-15 | Tokyo Denki Komusho:Kk | 延線機とドラム支持柱 |
JPH11209022A (ja) * | 1998-01-19 | 1999-08-03 | Hitachi Ltd | 非常止め装置を有するエレベータ |
JP5014545B2 (ja) * | 1999-11-23 | 2012-08-29 | プルメタッツエスエー | 2つの牽引ケーブル(tractioncable)を有する巻上装置(hoist)用力バランス装置及びかかる装置を装着した巻上装置 |
US6942070B2 (en) * | 2001-01-18 | 2005-09-13 | Plumettaz Sa | Emergency braking and shock absorbing device for a lift or suspended load |
-
2002
- 2002-01-14 US US10/466,159 patent/US6942070B2/en not_active Expired - Fee Related
- 2002-01-14 CN CN02803821.5A patent/CN1235791C/zh not_active Expired - Fee Related
- 2002-01-14 WO PCT/CH2002/000021 patent/WO2002057176A1/fr active IP Right Grant
- 2002-01-14 EP EP02732111A patent/EP1351878B1/de not_active Expired - Lifetime
- 2002-01-14 AT AT02732111T patent/ATE282004T1/de not_active IP Right Cessation
- 2002-01-14 JP JP2002557862A patent/JP3984915B2/ja not_active Expired - Fee Related
- 2002-01-14 DE DE60201883T patent/DE60201883T2/de not_active Expired - Lifetime
- 2002-01-14 ES ES02732111T patent/ES2231697T3/es not_active Expired - Lifetime
-
2004
- 2004-08-12 HK HK04106063A patent/HK1063305A1/xx not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO02057176A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004523441A (ja) | 2004-08-05 |
EP1351878B1 (de) | 2004-11-10 |
CN1235791C (zh) | 2006-01-11 |
US20040074706A1 (en) | 2004-04-22 |
JP3984915B2 (ja) | 2007-10-03 |
DE60201883D1 (de) | 2004-12-16 |
WO2002057176A8 (fr) | 2003-11-06 |
ES2231697T3 (es) | 2005-05-16 |
WO2002057176A1 (fr) | 2002-07-25 |
CN1486276A (zh) | 2004-03-31 |
DE60201883T2 (de) | 2005-12-01 |
ATE282004T1 (de) | 2004-11-15 |
HK1063305A1 (en) | 2004-12-24 |
US6942070B2 (en) | 2005-09-13 |
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