EP0611587A2 - Movable trap door - Google Patents

Movable trap door Download PDF

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Publication number
EP0611587A2
EP0611587A2 EP94101958A EP94101958A EP0611587A2 EP 0611587 A2 EP0611587 A2 EP 0611587A2 EP 94101958 A EP94101958 A EP 94101958A EP 94101958 A EP94101958 A EP 94101958A EP 0611587 A2 EP0611587 A2 EP 0611587A2
Authority
EP
European Patent Office
Prior art keywords
platform
block
frame
guide frame
carriage
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
EP94101958A
Other languages
German (de)
French (fr)
Other versions
EP0611587A3 (en
EP0611587B1 (en
Inventor
Franz Toth
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.)
Waagner Biro AG
Original Assignee
Waagner Biro 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 Waagner Biro AG filed Critical Waagner Biro AG
Publication of EP0611587A2 publication Critical patent/EP0611587A2/en
Publication of EP0611587A3 publication Critical patent/EP0611587A3/en
Application granted granted Critical
Publication of EP0611587B1 publication Critical patent/EP0611587B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/025—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars screw operated

Definitions

  • the invention relates to a countersink, in particular movable individual countersink, the platform of which is vertically displaceably mounted on cables in the manner of a pulley block on a guide frame, with ships which can be displaced via a ball screw being provided on opposite side walls of the guide frame to change the height of the platform as the drive for the pulley blocks .
  • Such countersinks are disclosed, for example, in SU 1549-910-A, in which a carriage is moved via a spindle drive to drive the pulley.
  • the slide has a pure drive function here and is not used to guide the platform.
  • the guide construction thus determines the height of the recess and practically corresponds to the lifting height.
  • EP-A1 0444307 has telescopic rollers at the upper end of the guide frame.
  • the object of the invention is to overcome these disadvantages.
  • the present invention is characterized in that the ship between the guide frame and the platform is designed as a guide of the platform and that at one end of the pulley the carriage is clamped, while the other end is anchored in the platform and the cables of the pulley via Upper and lower ends of the guide frame arranged rope pulleys are guided.
  • the countersink has a telescopic safety frame which encloses the platform around three sides, which is moved upward after the movable countersink has been set up by locking with the platform and is locked in this state with the fixed frame.
  • the invention is illustrated in the attached figure, for example and schematically in elevation.
  • the figure shows a guide frame 1 which can be moved onto a floor 12 via rollers 13 and on which a vertically displaceable ship 3 is provided, which is guided on two opposite sides of the guide frame 1.
  • the platform 6 has a U-shaped cross section and is guided with its legs on the carriage 3.
  • two pulleys 4 and 5 are provided on both sides of the slide 3, which raise (lower the pulley 4) and lower the pulley 6 (pulley 5). Both pulleys 4 and 5 are reeved to the same extent, so that when the carriage 3 moves relative to the guide frame 1, the platform 6 has a multiple, in particular double, lifting speed than the carriage 3.
  • the pulley 4 is fastened at one end to the lower end of the guide leg of the platform 6 and guided over the deflection roller 14 at the upper end of the carriage 3 and guided by the latter via the deflection roller 7 to the horizontal part of the carriage 3 and anchored therein. If the carriage 3 is now raised by a ball screw 2 over the nut 15, the platform 6 rises into the position of the platform 6 '(shown in broken lines) as a result of the pulley block ratio.
  • a second pulley 5 is provided which leads from the lower part of the leg of the platform 6 down to the guide roller 1 fixed in the guide frame 1 and 9 and from this again to the guide roller 10, which is provided twice and deflects the rope again, so that the carriage 3 is connected to the pulley 5 via the deflection roller 11.
  • the rope runs back to the second deflection roller 10 and to the clamping 16, which is arranged on the ship 3.
  • the clamping 16 is provided resiliently, so that the retracting block and tackle is constantly under tension. This tension prevents the formation of slack rope in the block and tackle 4.
  • the components 3, 4, 5 and 6 are marked with 3 ', 4', 5 'and 6' in the extended state.
  • a safety frame (not shown) which surrounds the device on three sides is provided, which is telescopic and can be carried by the movement of the platform 6 via a lock, the safety frame with the fixed frame, for example, in its extended position on the stage floor, can be locked.
  • the movable sinking is carried out with the same safety standard as a fixed, generally known sinking.

Abstract

A trap door, in particular a trap door which can be displaced on rollers (13), whose platform (6) is arranged such that it can be displaced vertically via cable pulls in the manner of block and tackle (4,5), exhibits, as drive of the block and tackles, a ball screw (2) which moves a carriage (3) which can be displaced along a guide frame (1) and the relative movement of which, transmitted via block and tackles (4,5), moves the platform (6) telescopically. For safety reasons, provision is made for a telescopic safety frame which, after the displaceable trap door has been set up, is extended and secured to the fixed frame. <IMAGE>

Description

Die Erfindung betrifft eine Versenkung, insbesondere verfahrbare Einzelversenkung, deren Plattform über Seilzüge nach Art eines Flaschenzugs an einem Führungsrahmen vertikal verschiebbar gelagert ist, wobei an gegenüberliegenden Seitenwänden des Führungsrahmens ein über eine Kugelspindel verschiebbarer Schiffen zur Änderung der Höhenlagerung der Plattform als Antrieb der Flaschenzüge vorgesehen ist.The invention relates to a countersink, in particular movable individual countersink, the platform of which is vertically displaceably mounted on cables in the manner of a pulley block on a guide frame, with ships which can be displaced via a ball screw being provided on opposite side walls of the guide frame to change the height of the platform as the drive for the pulley blocks .

Derartige Versenkungen werden beispielsweise in der SU 1549-910-A geoffenbart, bei der zum Antrieb des Flaschenzuges ein Schlitten über einen Spindelantrieb verschoben wird. Der Schlitten hat hier reine Antriebsfunktion und dient nicht der Führung der Plattform. Die Führungskonstruktion bestimmt somit die Bauhöhe der Versenkung und entspricht praktisch der hubhöhe. Dadurch ist die Verwendung der verfahrbaren Versenkung sehr eingeschränkt. Um diesen Nachteil zu beheben, weist die EP-A1 0444307 teleskopierbare Rollen am oberen Ende des Führungsgerüstes auf. Durch die Verwendung getrennter unterschiedlicher Antriebe ist die Versenkung kompliziert und auch die Verfügbarkeit ist relativ gering.Such countersinks are disclosed, for example, in SU 1549-910-A, in which a carriage is moved via a spindle drive to drive the pulley. The slide has a pure drive function here and is not used to guide the platform. The guide construction thus determines the height of the recess and practically corresponds to the lifting height. As a result, the use of the movable recess is very limited. To overcome this disadvantage, EP-A1 0444307 has telescopic rollers at the upper end of the guide frame. By using separate, different drives, the countersinking is complicated and the availability is also relatively low.

Die Erfindung hat es sich zur Aufgabe gestellt, diesen Nachteilen zu begegnen.The object of the invention is to overcome these disadvantages.

Darüberhinaus ist es aus der DE-B1-1117282 bekannt, einen direkten Spindelantrieb ohne Verwendung eines Flaschenzuges zu verwenden. Die geoffenbarten Seilzüge sind Teile eines Sicherheitssystems, welches bei Schlaffseilbildung die Antriebseinheit abstellt.Furthermore, it is known from DE-B1-1117282 to use a direct spindle drive without using a pulley block. The cable pulls disclosed are part of a safety system which switches off the drive unit in the event of slack rope formation.

Die vorliegende Erfindung ist dadurch gekennzeichnet, daß der Schiffen zwischen dem Führungsrahmen und der Plattform als Führung der Plattform ausgebildet ist und daß an einem Ende des Flaschenzugs der Schlitten eingespannt ist, während das andere Ende in der Plattform verankert ist und die Seile des Flaschenzuges über am oberen und unteren Ende des Führungsrahmens angeordnete Seilrollen geführt sind.The present invention is characterized in that the ship between the guide frame and the platform is designed as a guide of the platform and that at one end of the pulley the carriage is clamped, while the other end is anchored in the platform and the cables of the pulley via Upper and lower ends of the guide frame arranged rope pulleys are guided.

Insbesondere weist die Versenkung einen teleskopierbaren, die Plattform um drei Seiten umschließenden Sicherheitsrahmen auf, der nach dem Einrichten der verfahrbaren Versenkung durch Verriegelung mit der Plattform nach oben bewegt wird und in diesem Zustand mit dem feststehenden Rahmen verriegelt ist.In particular, the countersink has a telescopic safety frame which encloses the platform around three sides, which is moved upward after the movable countersink has been set up by locking with the platform and is locked in this state with the fixed frame.

Die Erfindung ist in der angschlossenen Figur beispielsweise und schematisch im Aufriß dargestellt.The invention is illustrated in the attached figure, for example and schematically in elevation.

Die Figur zeigt einen auf einen Fußboden 12 über Rollen 13 verfahrbaren Führungsrahmen 1, an dem ein vertikal verschiebbarer Schiffen 3 vorgesehen ist, der an zwei gegenüberliegenden Seiten des Führungsrahmens 1 geführt ist. Die Plattform 6 weist einen U-förmigen Querschnitt auf und ist mit ihren Schenkeln am Schlitten 3 geführt. Zur Relativbewegung der Plattform 6 sind auf beiden Seiten des Schlittens 3 zwei Flaschenzüge 4 und 5 vorgesehen, die die geführte Plattform 6 heben (Flaschenzug 4) und senken (Flaschenzug 5). Beide Flaschenzüge 4 und 5 sind im gleichen Maße eingeschert, sodaß bei einer Bewegung des Schlittens 3 relativ zum Führungsrahmen 1 die Plattform 6 eine mehrfache, insbesondere doppelte Hubgeschwindigkeit als der Schlitten 3 aufweist. Zu diesem Zweck ist der Flaschenzug 4 mit einem Ende am unteren Ende des Führungsschenkels der Plattform 6 befestigt und über die Umlenkrolle 14 am oberen Ende des Schlittens 3 geführt und von dieser über die Umlenkrolle 7 zum horizontalen Teil des Schlittens 3 geführt und in diesem verankert. Wird nun der Schlitten 3 durch eine Kugelspindel 2 über die Mutter 15 angehoben, so hebt sich infolge der Flaschenzugübersetzung die Plattform 6 in die Lage der Plattform 6' (strichliert eingezeichnet). Damit sich beim Absenken kein Schlaffseil bildet, ist ein zweiter Flaschenzug 5 vorgesehen der vom unteren Teil des Schenkels der Plattform 6 nach unten zur im Führungsrahmen 1 festgelagerten Umlenkrolle 8 bzw. 9 und von dieser wieder zur Umlenkrolle 10 führt, die zweifach vorgesehen ist und die das Seil wieder umlenkt, sodaß der Schlitten 3 über die Umlenkrolle 11 an den Flaschenzug 5 angeschlossen ist. Das Seil läuft wieder zurück zur zweiten Umlenkrolle 10 und zur Einspannung 16, die am Schiffen 3 angeordnet ist. Durch diese Maßnahme wird die Plattform 6 im vorgegebenen Geschwindigkeitsverhältnis bewegt. Insbesondere ist die Einspannung 16 federnd vorgesehen, sodaß der Rückzugflaschenzug ständig unter Spannung steht. Diese Spannung bewirkt die Vermeidung der Schlaffseilbildung im Flaschenzug 4. Zur besseren Kennzeichnung sind die Bauteile 3, 4, 5 und 6 im ausgefahrenen Zustand mit 3', 4', 5', und 6' gekennzeichnet. Zur Erhöhung der Sicherheit insbesondere bei verfahrbaren Versenkungen, ist ein nicht dargestellter die Einrichtung an drei Seiten umschließender Sicherheitsrahmen vorgesehen, der teleskopierbar ist und durch die Bewegung der Plattform 6 über eine Verriegelung mitnehmbar ist, wobei in seiner ausgefahrenen Stellung der Sicherheitsrahmen mit dem feststehenden Rahmen beispielsweise am Bühnenboden, verriegelbar ist. Durch diese letzte Maßnahme ist die verfahrbare Versenkung mit demselben Sicherheitsstandard ausgeführt wie eine ortsfeste allgemein bekannte Versenkung.The figure shows a guide frame 1 which can be moved onto a floor 12 via rollers 13 and on which a vertically displaceable ship 3 is provided, which is guided on two opposite sides of the guide frame 1. The platform 6 has a U-shaped cross section and is guided with its legs on the carriage 3. For the relative movement of the platform 6, two pulleys 4 and 5 are provided on both sides of the slide 3, which raise (lower the pulley 4) and lower the pulley 6 (pulley 5). Both pulleys 4 and 5 are reeved to the same extent, so that when the carriage 3 moves relative to the guide frame 1, the platform 6 has a multiple, in particular double, lifting speed than the carriage 3. For this purpose, the pulley 4 is fastened at one end to the lower end of the guide leg of the platform 6 and guided over the deflection roller 14 at the upper end of the carriage 3 and guided by the latter via the deflection roller 7 to the horizontal part of the carriage 3 and anchored therein. If the carriage 3 is now raised by a ball screw 2 over the nut 15, the platform 6 rises into the position of the platform 6 '(shown in broken lines) as a result of the pulley block ratio. So that no slack rope is formed when lowering, a second pulley 5 is provided which leads from the lower part of the leg of the platform 6 down to the guide roller 1 fixed in the guide frame 1 and 9 and from this again to the guide roller 10, which is provided twice and deflects the rope again, so that the carriage 3 is connected to the pulley 5 via the deflection roller 11. The rope runs back to the second deflection roller 10 and to the clamping 16, which is arranged on the ship 3. As a result of this measure, the platform 6 is moved in the predetermined speed ratio. In particular, the clamping 16 is provided resiliently, so that the retracting block and tackle is constantly under tension. This tension prevents the formation of slack rope in the block and tackle 4. For better identification, the components 3, 4, 5 and 6 are marked with 3 ', 4', 5 'and 6' in the extended state. In order to increase safety, particularly in the case of movable recesses, a safety frame (not shown) which surrounds the device on three sides is provided, which is telescopic and can be carried by the movement of the platform 6 via a lock, the safety frame with the fixed frame, for example, in its extended position on the stage floor, can be locked. As a result of this last measure, the movable sinking is carried out with the same safety standard as a fixed, generally known sinking.

Claims (2)

Versenkung, insbesondere verfahrbare Einzelversenkung, deren Plattform (6) über Seilzüge nach Art eines Flaschenzuges (4,5) an einem Führungsrahmen (1) vertikal verschiebbar gelagert ist, wobei an gegenüberliegenden Seitenwänden des Führungsrahmens (1) ein über eine Kugelspindel (2) verschiebbarer Schliffen (3) zur Änderung der Höhenlagerung der Plattform (6) als Antrieb der Flaschenzüge (4,5) vorgesehen ist, dadurch gekennzeichnet, daß der Schlitten (3) zwischen dem Führungsrahmen (1) und der Plattform (6) als Führung der Plattform (6) ausgebildet ist und daß an einem Ende des Flaschenzuges (4,5) der Schlitten (3) eingespannt ist, während das andere Ende in der Plattform (6) verankert ist und die Seile des Flaschenzuges (4,5) über am oberen und unteren Ende des Führungsrahmens (1) angeordnete Seilrollen (7,8,9,10) geführt sind.Countersinking, in particular movable individual countersinking, the platform (6) of which is vertically displaceably mounted on a guide frame (1) via cable pulls in the manner of a pulley block (4, 5), with a ball spindle (2) displaceable on opposite side walls of the guide frame (1) Grinding (3) for changing the height of the platform (6) is provided as a drive for the pulley blocks (4, 5), characterized in that the carriage (3) between the guide frame (1) and the platform (6) acts as a guide for the platform (6) and that the carriage (3) is clamped at one end of the block and tackle (4,5), while the other end is anchored in the platform (6) and the ropes of the block and tackle (4,5) over at the top and the lower end of the guide frame (1) arranged rope pulleys (7,8,9,10) are guided. Versenkung nach Anspruch 1, dadurch gekennzeichnet, daß die Versenkung einen teleskopierbaren, die Plattform (6) um drei Seiten umschließenden Sicherheitsrahmen aufweist, der nach den Einrichtungen der verfahrbaren Versenkung durch Verriegelung mit der Plattform (6) nach oben bewegt wird und in diesem Zustand mit dem feststehenden Rahmen verriegelt ist.Countersink according to claim 1, characterized in that the countersink has a telescopic safety frame which surrounds the platform (6) on three sides and which, after the devices of the movable countersink, is moved upwards by locking with the platform (6) and in this state with is locked to the fixed frame.
EP19940101958 1993-02-17 1994-02-09 Movable trap door Expired - Lifetime EP0611587B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT296/93 1993-02-17
AT29693A AT399492B (en) 1993-02-17 1993-02-17 SUNBING, ESPECIALLY TRAVELABLE SINGLE BURNING

Publications (3)

Publication Number Publication Date
EP0611587A2 true EP0611587A2 (en) 1994-08-24
EP0611587A3 EP0611587A3 (en) 1994-10-12
EP0611587B1 EP0611587B1 (en) 1997-05-02

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ID=3486781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940101958 Expired - Lifetime EP0611587B1 (en) 1993-02-17 1994-02-09 Movable trap door

Country Status (3)

Country Link
EP (1) EP0611587B1 (en)
AT (1) AT399492B (en)
DE (1) DE59402569D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102251687A (en) * 2011-05-09 2011-11-23 斯毕士舞台设备技术（杭州）有限公司 Jacking-up mechanism of sleeve roller chains
CN101612482B (en) * 2009-07-20 2012-03-28 总装备部工程设计研究总院 Foldable spheroid prop structure for large-scale performances

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107416236A (en) * 2017-07-05 2017-12-01 上海宇航系统工程研究所 Space station high position precision telescoping mechanism
CN112744759A (en) * 2021-01-08 2021-05-04 中国铁建重工集团股份有限公司 Comprehensive operation device for magnetic suspension line
CN114044471A (en) * 2021-11-09 2022-02-15 国网山东省电力公司烟台市牟平区供电公司 Maintenance device for electric power operation and inspection

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2204671A (en) * 1939-04-15 1940-06-18 Olson & Sons Inc Chas Extensible work tower
CH504379A (en) * 1969-03-12 1971-03-15 Schellenberg Heinz Mobile lifting device
FR2058610A5 (en) * 1969-09-17 1971-05-28 Chapelle Charles
US4752102A (en) * 1982-04-16 1988-06-21 Rasmussen Keith O Elevating and supporting apparatus
EP0444307A1 (en) * 1990-02-26 1991-09-04 MAN Gutehoffnungshütte Aktiengesellschaft Stage-lowering apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH322756A (en) * 1954-10-30 1957-06-30 Villars Julio Lifting installation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2204671A (en) * 1939-04-15 1940-06-18 Olson & Sons Inc Chas Extensible work tower
CH504379A (en) * 1969-03-12 1971-03-15 Schellenberg Heinz Mobile lifting device
FR2058610A5 (en) * 1969-09-17 1971-05-28 Chapelle Charles
US4752102A (en) * 1982-04-16 1988-06-21 Rasmussen Keith O Elevating and supporting apparatus
EP0444307A1 (en) * 1990-02-26 1991-09-04 MAN Gutehoffnungshütte Aktiengesellschaft Stage-lowering apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101612482B (en) * 2009-07-20 2012-03-28 总装备部工程设计研究总院 Foldable spheroid prop structure for large-scale performances
CN102251687A (en) * 2011-05-09 2011-11-23 斯毕士舞台设备技术（杭州）有限公司 Jacking-up mechanism of sleeve roller chains
CN102251687B (en) * 2011-05-09 2012-09-05 斯毕士舞台设备技术（杭州）有限公司 Jacking-up mechanism of sleeve roller chains

Also Published As

Publication number Publication date
ATA29693A (en) 1994-10-15
EP0611587A3 (en) 1994-10-12
DE59402569D1 (en) 1997-06-05
EP0611587B1 (en) 1997-05-02
AT399492B (en) 1995-05-26

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