WO1995029744A1 - Dispositif de levage, notamment pour scenes escamotables - Google Patents

Dispositif de levage, notamment pour scenes escamotables Download PDF

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Publication number
WO1995029744A1
WO1995029744A1 PCT/HU1995/000013 HU9500013W WO9529744A1 WO 1995029744 A1 WO1995029744 A1 WO 1995029744A1 HU 9500013 W HU9500013 W HU 9500013W WO 9529744 A1 WO9529744 A1 WO 9529744A1
Authority
WO
WIPO (PCT)
Prior art keywords
support column
lifting device
threaded spindle
lifting
ball
Prior art date
Application number
PCT/HU1995/000013
Other languages
German (de)
English (en)
Inventor
Imre Réfy
Zsolt Kaszanitzky
László HOMOLYA
Original Assignee
Refy Imre
Zsolt Kaszanitzky
Homolya Laszlo
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 Refy Imre, Zsolt Kaszanitzky, Homolya Laszlo filed Critical Refy Imre
Priority to DE19580401A priority Critical patent/DE19580401B4/de
Priority to DE19580401D priority patent/DE19580401D2/de
Priority to AT0905495A priority patent/AT409594B/de
Publication of WO1995029744A1 publication Critical patent/WO1995029744A1/fr

Links

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
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
    • B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated

Definitions

  • the invention relates to a lifting device which can be used advantageously in particular in the case of lowering platforms.
  • submerged platforms must have horizontal and sloping surfaces compared to their surroundings. The position of these surfaces must be set precisely, and small distances must be kept between the surfaces that move relative to one another.
  • the lowering platforms also have to meet the following requirements, among others: during their operation, their noise level should be the lowest possible; their space requirement should be minimal; their fire safety should be maximum; their installation and strength effects on the building environment should be optimal. It is particularly important to emphasize that the mechanical efficiency must be favorable, not primarily because of the energy consumption, but because the prices of the modern, controllable drive elements increase with the increase in their output to an increased extent, so that poor efficiency can indirectly become an obstacle to the use of the most up-to-date solutions.
  • the object of the invention is to provide such a lifting device which can advantageously be used primarily in submerged platforms, which does not require any guides built into the walls of the building structure for its actuation, in this case realizes the mechanical power transmission with good efficiency, works with a low noise level and possibilities for the use of the most modern electrical and electronic drive elements.
  • the invention is based on the knowledge that - insofar as the stage platforms or their parts are practically only by means of tensile or screw loads exposed threaded spindles are raised and lowered - this offers the possibility of using optimal mechanical efficiency, minimum noise levels and space requirements for ball screws, which at the same time also eliminates the guides built into the walls of the building structure and instead only requires lifting and lowering support columns, the ones with which appropriate upward and downward movement in the vertical sense can be secured by means of a side support equipped with guide rollers.
  • the object was achieved in the sense of the invention by means of a lifting device provided in particular for retractable platforms, which has a lifting gear connected to a gear, and whose essential feature is that, as a lifting gear, it has a supporting column which can be moved up and down in the vertical direction has to which a parallel to and movable with it threaded spindle is connected, on the top of its lower end conveniently at a smaller distance than half the entire length of the threaded spindle one in its position and thus the up and down movement of the threaded spindle and rotatably rests with this ball nut securing the support column; the ball nut is connected to the drive motor by means of a force transmission means, for example a toothed belt, and by means of a vertical device for receiving the load resulting from the load on the support column in the course of its raising Support supported by force, the support column being provided with a lateral guide mechanism in its area under the ball nut fixed in its position.
  • a force transmission means for example a toothed belt
  • the threaded spindle has its lower end attached to a constructional element projecting laterally from the lower end of the support column, preferably to a footplate by means of a ball joint, with its upper end, however, attached to a headplate projecting laterally from the upper end of the support column by means of a Key or such a connection is connected.
  • the support column which preferably has a circular cross section, is formed by a support tube and if the upper end of the support column is connected to the object to be lifted, for example to the lowering platform part, by means of a ball joint.
  • the lateral guide construction has a guide roller attached to the base, for example to the substructure of the theater building, and to it rotatably connected, advantageously having horizontal axes of rotation, which are seated laterally on the outer surface of the support column.
  • the guide structure has three guide rollers each in two planes arranged one above the other or one above the other and spaced apart from one another, which are arranged at an equal distance from one another on an arc of a circle.
  • a shaft serving to receive the support column and the threaded spindle is formed in the substructure.
  • the exemplary embodiment can also be advantageous, according to which, in order to enable the tilting of an object, for example a podium member of a lowering platform, in a certain direction, the given object rests on a supporting structure in the region of its ends running in the tilting direction, one of which is at the top At the end of the support column of the one support structure, a construction which enables horizontal or substantially horizontal movement of the object is arranged in comparison to the support column.
  • the construction which enables locomotion is a rail which is fastened to the upper end of the support column and which is attached to this and is attached to the object, for example the podium member.
  • a motor preferably an electric servo motor, connected to a horizontal or substantially horizontal threaded spindle, preferably articulated to the given object, is articulated in a certain direction and the threaded spindle is in an actuating connection with an angle lever which, on the one hand, is articulated to the object, for example to the upper end of the support column of the lifting mechanism assigned to the podium member, and on the other hand is connected to the object via a lifting rod, the lifting rod being connected to its lower end with the interposition of a joint to the angle lever, with its upper end also articulated to the object.
  • the angle lever has two plates that are parallel to one another and spaced apart from one another, between which a threaded nut that also functions as a joint is mounted in a manner that also allows rotation, and the threaded spindle is carried out by this threaded nut is.
  • the threaded nut can have a cylindrical body in which a through-hole having a geometric longitudinal axis perpendicular to its geometric longitudinal axis is formed and the threaded spindle is passed through this hole.
  • the motor is attached to the object, for example to the podium member, the angle lever to the support column, expediently to the head plate attached to the upper end of the support column, the lifting rod on the one hand to the angle lever and on the other hand to the object Ball joint connections connected.
  • FIG. 1 in a sketched side view, for
  • FIG. 2 shows the horizontal section along the
  • Fig. 3 shows the detail shown in Fig. 1
  • Fig. 4 is a vertical section along the line C-C in Fig. 1 in smaller
  • Fig. 5 shows the detail shown in Fig. 4
  • Fig. 6 is the perspective view seen from the direction of the arrow "F" in Fig. 5 - partly in
  • each podium member of a lowering platform is supported by two lifting devices, the task of which, in addition to carrying, lifting, lowering and tilting (adjusting in the transverse direction) of the given podium member, also the exact vertical guidance of the Podium member is.
  • each lifting device has a - expediently consisting of a support tube - vertical support column 1, a parallel to this and with a small lateral distance arranged threaded spindle 7 and an electric drive motor 5 supported on the bracket 5a, preferably a servo motor which is provided for driving (rotating) the ball nut 6 which is fixedly arranged on the threaded spindle 7 in its vertical position.
  • a servo motor which is provided for driving (rotating) the ball nut 6 which is fixedly arranged on the threaded spindle 7 in its vertical position.
  • the ball bearing 9, which is designed to absorb vertical forces, is used.
  • the drive motor 5 is connected to the ball nut 6 via a toothed belt 10.
  • the ball nut 6 is arranged at approximately half the height "H" of the support column 1, ie at the height "h” above the floor level “t” of the substructure 16 of the theater building and can be attached, for example, to the console 5a already mentioned, which, on the other hand, is attached to a part of the building structure (not shown).
  • the support column 1 is supported by lateral guide rollers to ensure the corresponding accuracy of the vertical movement taking place in the direction of the double arrow "a" (FIG. 1).
  • one support column 1 is supported by six guide rollers 2 each, in such a way that three guide rollers 2 are arranged in a common horizontal plane, these levels being above and below run at a distance "m" from each other.
  • the three guide rollers 2 are arranged to each other on an arc measured at equal lateral distances, ie the angle ⁇ shown in FIG. 2 is 120 degrees.
  • the six guide rollers 2 are installed in the frame 3 - which is essentially a welded sheet steel housing (Fig.
  • the lower flange 4 - advantageously with the interposition of a rubber base plate - for example with the help of (not shown) screws in the substructure 16 is anchored.
  • the support columns can be adjusted to the vertical, which can ensure that the individual podium members are parallel to each other during their vertical movement (Fig. 1, arrow "a") move.
  • the side distance between the individual podium links is approx. 5 mm, which is sufficient to ensure that they do not collide with each other during their tilting (see later).
  • the guide rollers 2 on the left side have been shown pivoted out of their actual position in order to illustrate how the guide rollers surround and support the support column 1.
  • the guide rollers that ensure play-free guidance can be adjusted; the adjustment can be carried out, for example, by rotating eccentrically designed shafts.
  • the support column 1 is connected by means of the ball joint 8 to the podium member 17, which tilts it both in the longitudinal direction (parallel to the plane in FIG. 1) and in the transverse direction (perpendicular to
  • the ball joint 8 itself is fastened to the podium member 17, while the bushing 20 receiving the ball joint 8 is fastened to the head plate 14 located at the upper end of the support column 1.
  • the foot plate 13 is fastened, the diameter (or greatest width dimension) smaller than the diameter (or the largest transverse dimension) of the shaft 19 located in the substructure 16 of the theater building is, in other words: the support column 1 moves once in the shaft in the course of its upward and downward movement corresponding to the arrow "a" shown in FIG. 1 down, up once.
  • the lower end of the already mentioned threaded spindle 7 is connected by means of the ball joint 11 to the foot plate 13 belonging to the support column 1, its upper end, however, by means of the feather key 12 or another similar connection to the head plate 14
  • Support column 1 connected which does not transmit any force in the longitudinal direction of the threaded spindle 7, on the other hand, does not allow the upper end of the threaded spindle 7 to move away from the head plate 14 in the lateral direction.
  • the ball nut 6 is arranged above the ground level "t" at a criminal height dependent on the drive motor 5 and the other structural elements possibly provided under the latter.
  • the height "h” shown in FIG. 1 is also influenced by the fact that the lower retention and the vertical guidance of the support column 1 must be completely secured, which in the case of the exemplary embodiment according to FIG. 1- by the height "m" between the lower and the upper three guide rollers 2 is guaranteed.
  • the ball nut 6 is expediently to be installed.
  • the ball nut 6 is a component known per se and is also offered on the world market by the Swedish company SKF, for example. In Fig.
  • the design of the right-hand support column 1 differs from that of the left-hand one in that a rail 18 is attached to the top plate 14, to which a sliding guide 15, only the length "b", is attached, which is shorter than the rail 18 is. The determination of this design solution will be announced later.
  • FIGS. 3-6 show a possible exemplary embodiment of a mechanism which serves for tilting the podium member 17 in the transverse direction (perpendicular to the plane of the drawing) and is designated as a whole by the reference number 30 (in FIG. 1, designated by "B").
  • this mechanism 30 has a motor 21 which is fixed in its position, expediently an electric servomotor and a threaded spindle 22 driven thereby, which serves to actuate the angle lever designated as a whole by reference number 23 .
  • the motor 21 is connected with the interposition of the gear 34 and the flexible coupling 35 to the threaded spindle 22, which is carried out by the threaded nut 31, which also functions as an articulation, ie the threaded bore (FIGS. 3, 5 and 6).
  • the threaded nut 31 has a cylindrical body, the angle lever 23, on the other hand, two mutually parallel and spaced apart, rectangular triangular-shaped plates 23a, 23b, which are rigid in comparison to one another the cylindrical threaded nut 31 can be rotated between them with its pins 31a, 31b in the plates stored arranged. 6, the geometric longitudinal axis "x" of the threaded spindle 22 and the geometric longitudinal axis "y” of the cylindrical threaded nut 31, which are perpendicular to one another, have been drawn.
  • the components of the mechanism 30 are connected to one another as required by means of ball-and-socket joints, to the podium member 17 and to the top plate 14 of the support column 1, so that the entire system can follow the transverse tilting movements of the podium member 17 without any risk of tension.
  • the motor 21 is connected to the podium member 17 by means of the ear elements 33 and the ball joint 24 taking it in the middle, while the angle lever 23 is by means of the lower rectangular corner regions of its plates 23a, 23b, the ear elements 35 and of the ball joint 26 is connected to the head plate 14 located at the upper end of the support column 1.
  • the plates 23a, 23b are connected by means of their other lower corner region with the interposition of the ball joint 27 to the lower end of the lifting rod 28 which they have taken in the middle, and the upper end of this rod is taken to the center by the ear elements 34 by means of the ball joint 29 connected to the podium member 17.
  • the lowering platform is actuated in the following manner by means of the mechanisms according to FIGS. 1-4: if the podium member 17 follows, for example To be tilted forward, the left-hand support column 1 shown in FIG. 1 is moved vertically upwards by actuation of the drive motor 5 belonging to it in the corresponding direction and the resulting rotation of the ball nut 6, since the rotation of the stationary ball nut 6 forces the threaded spindle 7 received into it to move axially upwards and the spindle takes the support column 1 with it in the course of this movement.
  • the podium load lying on the support column 1 is raised or lowered by the ball nut 6 with the aid of the threaded spindle 7, the part of the threaded spindle 7 lying under the ball nut 6 always only one pull and the part located above the ball nut 6 only one Is subjected to torsional stress.
  • the entire mass to be lifted consequently depends on the threaded spindle 7 and the vertical forces resulting from the load load the bearing 9 supporting or receiving the ball nut 6.
  • the tensile stress acting on the section of the threaded spindle 7 lying under the ball nut 6 results from the load , which must be raised, however, the torsional stress from the moment at which the ball nut 6 located on the threaded spindle 7 has to be rotated in the course of the lifting.
  • the lower spindle end is clamped in by means of a ball joint (see the ball joint 11 in FIG. 1), that is to say that the clamp is "flexible", while the upper clamp is also the key 12 is realized or shows such an embodiment, the stresses acting on the spindle are distributed between its upper and lower section.
  • the podium member 17 is tilted in the longitudinal direction. (According to FIG. 1, the left-hand support column assumes its upper end position, the right-hand support column being sunk into the shaft 19.) As a result of the tilting, the center points of the upper ends of the support columns 1 move away from one another.
  • the motor visible in FIGS. 3 and 4 - preferably a servo motor - is actuated, which rotates the threaded spindle 22.
  • the angle lever 23 tilts in one of the two directions indicated by the double arrow "c" and, by means of the lifting rod 28, sets the podium member 17 downward or moving upwards into the desired transverse position.
  • the threaded nut 31 which is in a positive connection therewith, moves in one direction on the curved line and, with this movement, forces the angle lever 23 to move upwards or downwards, consequently the lifting rod 28 the whole Podium link 17 tilted.
  • the threaded nut 31 also functions as a joint, the connections between the components of the entire mechanism 30 being designed with ball joints, so that the tilting can easily take place unimpeded.
  • the longitudinal and transverse tilting can be electronically coordinated.
  • the change in the distance between the adjacent podium members will be minimal if the tilting
  • the center of the ball joints 8 (Fig. 1) near the level of the podium is provided as high as possible.
  • the lifting devices thanks to their relatively high mechanical efficiency - since they are not self-locking - would sink again under the influence of the load, they are equipped with a so-called double theater brake, which prevents them from falling again with complete certainty.
  • the advantage of the invention is that it enables the lifting and lowering of the various objects, primarily the podiums of retractable platforms, in such a way that no guides to be attached to the structural environment, for example to the walls, are required.
  • Mechanical power transmission is ensured with low efficiency and low noise level, and the most modern electrical and electronic drive elements can be used in the system.
  • the support columns do not have to be connected to one another with any mechanical cross bracing at all, so that the space between them can remain completely free and be used for functional purposes.
  • the lifting and lowering of the support columns can be mutually coordinated using only electronic means, so that no mechanical forced connections or forced guides have to be provided.
  • the invention is of course in no way limited to the embodiment described and illustrated in detail above, but can be implemented in many ways within the scope of protection defined by the claims. It is conceivable that a square podium member is supported in the middle only by a single lifting device according to the invention such that the support column is also connected to the lower surface of the podium member in this case with the interposition of a ball joint. In this case, however, the installation of two tilting mechanisms in the transverse direction is required, and rotation of the podium around its vertical axis must also be prevented.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un dispositif de levage comportant un élévateur relié à un entraînement. L'invention est principalement caractérisée en ce qu'elle présente un mécanisme de levage sous forme d'une colonne porteuse (1) pouvant se déplacer verticalement vers le haut et vers le bas. Une broche filetée (7) disposée parallèlement et se déplaçant de façon solidaire est raccordée à cette colonne. Un écrou sphérique (6), à position fixe, est monté rotatif sur cette broche, au-dessus de son extrémité inférieure, de façon appropriée à une distance inférieure (h) à la moitié de la longueur totale (H) de la broche filetée (7) assurant ainsi le déplacement vers le haut et vers le bas de la tige filetée (7), et avec cette dernière, celui de la colonne porteuse (1). L'écrou sphérique (6) est raccordé au moteur de commande (5) au moyen d'un mécanisme de transmission de force, par exemple une courroie dentée (10), et supporté par un palier (9) apte à absorber la force verticale résultant de la charge agissant sur la colonne porteuse au cours de son levage. La colonne porteuse (1) est pourvue, dans sa zone située sous l'écrou sphérique (6) à position fixe, d'un mécanisme de guidage latéral.
PCT/HU1995/000013 1994-05-03 1995-05-02 Dispositif de levage, notamment pour scenes escamotables WO1995029744A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19580401A DE19580401B4 (de) 1994-05-03 1995-05-02 Hubvorrichtung, insbesondere für Versenkbühnen
DE19580401D DE19580401D2 (de) 1994-05-03 1995-05-02 Hubvorrichtung, insbesondere für Versenkbühnen
AT0905495A AT409594B (de) 1994-05-03 1995-05-02 Hubvorrichtung, insbesondere für versenkbühnen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU9401295A HU217290B (hu) 1994-05-03 1994-05-03 Emelőszerkezet, különösen színházi süllyedőkhöz
HUP9401295 1994-05-03

Publications (1)

Publication Number Publication Date
WO1995029744A1 true WO1995029744A1 (fr) 1995-11-09

Family

ID=10985154

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1995/000013 WO1995029744A1 (fr) 1994-05-03 1995-05-02 Dispositif de levage, notamment pour scenes escamotables

Country Status (5)

Country Link
AT (1) AT409594B (fr)
CH (1) CH691955A5 (fr)
DE (2) DE19580401D2 (fr)
HU (1) HU217290B (fr)
WO (1) WO1995029744A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011050153U1 (de) 2011-05-17 2011-06-09 Busch, Burghard, 47800 Transporthilfsmittel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289191C (fr) *
AT32122B (de) * 1905-10-18 1908-03-10 Georg Bartholomaeus Scheidler Gefäßverschluß.
DE2400597A1 (de) * 1972-01-05 1974-07-18 Astro Dynamics Inc Durch spindel und mutter mit mutteraufsatz betriebene hubvorrichtung
SU1643443A1 (ru) * 1989-04-28 1991-04-23 Войсковая часть 75360 Подъемник

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT32188B (de) * 1906-04-20 1908-03-10 Schenck Carl Eisengiesserei Hebevorrichtung für Eisenbahnfahrzeuge mit zentrisch belasteten Hubspindeln.
GB442905A (en) * 1934-10-13 1936-02-18 Frank Coleman New or improved lifting apparatus for motor vehicles
DE3305074A1 (de) * 1983-02-14 1984-08-23 Dwiputra, Tun, Surabaya Hebebuehne, die durch eine mechanische hoehenverstelleinrichtung heb- und senkbar ist
AT379355B (de) * 1983-04-12 1985-12-27 Waagner Biro Ag Allseitig neigbare teilplattform eines hubpodiums

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289191C (fr) *
AT32122B (de) * 1905-10-18 1908-03-10 Georg Bartholomaeus Scheidler Gefäßverschluß.
DE2400597A1 (de) * 1972-01-05 1974-07-18 Astro Dynamics Inc Durch spindel und mutter mit mutteraufsatz betriebene hubvorrichtung
SU1643443A1 (ru) * 1989-04-28 1991-04-23 Войсковая часть 75360 Подъемник

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Section PQ, week 9202, 26 February 1992, Q38, DERWENT PUBLICATIONS LTD., LONDON; & SU,A,1 643 443 (SERGIN). *

Also Published As

Publication number Publication date
DE19580401B4 (de) 2005-04-14
HU9401295D0 (en) 1994-08-29
AT409594B (de) 2002-09-25
HU217290B (hu) 1999-12-28
HUT71979A (en) 1996-02-28
DE19580401D2 (de) 1997-04-17
ATA905495A (de) 2002-02-15
CH691955A5 (de) 2001-12-14

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