EP0034221A1 - Plateforme à tréteau déplaçable en hauteur pour scènes de théâtre ou analogues - Google Patents

Plateforme à tréteau déplaçable en hauteur pour scènes de théâtre ou analogues Download PDF

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Publication number
EP0034221A1
EP0034221A1 EP80108114A EP80108114A EP0034221A1 EP 0034221 A1 EP0034221 A1 EP 0034221A1 EP 80108114 A EP80108114 A EP 80108114A EP 80108114 A EP80108114 A EP 80108114A EP 0034221 A1 EP0034221 A1 EP 0034221A1
Authority
EP
European Patent Office
Prior art keywords
pedestal
lifting
scissors
platform
frame according
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
EP80108114A
Other languages
German (de)
English (en)
Other versions
EP0034221B1 (fr
Inventor
Hans-Jochen Eisenberg
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.)
Eisenberg Hans-Jochen
Original Assignee
Eisenberg Hans-Jochen
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
Priority claimed from DE19803003392 external-priority patent/DE3003392A1/de
Priority claimed from DE19803008557 external-priority patent/DE3008557A1/de
Application filed by Eisenberg Hans-Jochen filed Critical Eisenberg Hans-Jochen
Priority to AT80108114T priority Critical patent/ATE5272T1/de
Publication of EP0034221A1 publication Critical patent/EP0034221A1/fr
Application granted granted Critical
Publication of EP0034221B1 publication Critical patent/EP0034221B1/fr
Expired 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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • 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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
    • E04H3/10—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons for meetings, entertainments, or sports
    • E04H3/22—Theatres; Concert halls; Studios for broadcasting, cinematography, television or similar purposes
    • E04H3/24—Constructional features of stages
    • E04H3/26—Revolving stages; Stages able to be lowered

Definitions

  • the invention relates to a height-adjustable pedestal for theater stages or the like., With a platform carried by an upper frame, with hinged support scissors hinged to the corners of the upper frame and with a height adjustment device that can be driven by motor or physical force.
  • the invention has for its object to provide a pedestal height adjustable by a drive, in which the height adjustment is smooth and the stack height is very low.
  • the height adjustment device has one or two additional lifting scissors arranged centrally under the platform, which are provided at their leg ends with rollers or sliders and can be extended against the underside of the platform.
  • the lifting scissors only have to lift the weight of the platform and sometimes the weight of the support scissors and can therefore be designed with relatively thin cross-sections.
  • the support legs are locked again on the pedestal and then, after lowering the lifting scissors, they in turn absorb all loading forces again.
  • This complete separation of supporting scissors and lifting scissors also proves to be particularly advantageous in that the lifting scissors height adjustment device can be manufactured as a separate assembly and can also be retrofitted to pedestals with supporting scissors.
  • the height adjustment device can consist of two X-shaped lifting scissors arranged next to one another, the lower or upper ends of which are connected in pairs by transverse axes which can be moved relative to one another by a screw spindle drive.
  • Such an embodiment of the height adjustment device is characterized by a symmetrical, force-balanced support of the platform during the height adjustment and can be produced at relatively low costs.
  • the lifting scissors rest in their lowest position on compressed lifting springs.
  • These lifting springs which can carry, for example, 90% of the weight of the pedestal part to be moved up, make it considerably easier to move the lifting scissors out of their lowest position for the first time.
  • guide rails for the rollers or sliders of the lifting scissors are expediently attached to the underside of the platform and to the pedestal frame at the bottom.
  • the smooth running of the height adjustment device can be improved even further by means of these guide rails.
  • Pedestals of the Xrt discussed here which generally have a rectangular plan area of 1 x 2 m, are usually set up in several lifts and one behind the other and then set to the same or to different heights.
  • the pedestal stands and their height adjustment devices are designed in such a way that they can also be adjusted in groups or rows at the same time.
  • the pedestal stands together with similar pedestals in the longitudinal direction can be arranged in rows and that the screw spindle extends over the length of the pedestal and can be connected to adjacent screw spindles in a rotationally fixed manner by coupling pieces.
  • the invention is furthermore based on the object of providing the pedestals with a central locking system which enables a row height adjustment of the pedestals by, for example, only one person.
  • the invention is therefore provided in pedestal trestles in which the movable upper ends of the supporting scissors carry spring-loaded locking pins which can be pulled out of locking openings of the side rails of the upper frame by means of an adjustment device against the spring force that the locking pins are temporarily lockable even in the unlocked position of the pedestal frame are.
  • the locking pins are preferably connected to a central pull rod via Bowden cables, which can be adjusted by an assigned pawl hand lever or by a motorized adjustment drive.
  • the tie rods of lined pedestals can be coupled to one another and the side rails of the upper frame are provided with elongated holes for receiving the locking pins.
  • a further embodiment of the invention is based on the object of improving the balance of forces when starting the upward movement of the scissors from their lowest position.
  • the middle joint in each lifting shear lies above the connecting line between the force application point at the foot end and the force output point at the upper end of each lifting shear leg.
  • each lifting shank leg is designed as an elongated rhombus and that the central joint lies in the upper, central rhombus corner.
  • the height adjustment device consists of two lifting scissors arranged side by side, the lower ends of which are articulated on cross struts which can be moved against one another by a screw spindle, the articulation point of the lifting scissors on the lower cross struts and the screw spindle lie in a common plane.
  • the pedestal frame shown in perspective in FIG. 1, leaving out platform 1 consists of an upper frame 2 supporting platform 1, a lower frame 3 on the bottom, and four Y-shaped support scissors 4, each with one of its scissor legs 5 , 6 are articulated at points 7, 8 lying one above the other on the upper frame 2 and the lower frame 3, the upper movable leg 9 each being displaceably guided along the side rails 10 of the upper frame 2.
  • the movable legs 9 each carry spring-loaded locking pins 11, which automatically snap into slots 12 of the side rails and the pedestal in the Lock the selected height setting securely.
  • the locking pins 11 can be pulled out of the locking holes 12 by Bowden cables 13 in order to prepare for a height adjustment.
  • Such a pedestal is, for example, explained in great detail in DE-PS 23 05 145.
  • the pedestal is equipped with a separate height adjustment device, which has two X-shaped scissors 14, 15 arranged side by side in the middle under the platform of the pedestal, the leg ends of which are provided with upper rollers 16 and with lower rollers 17, those on the upper frame 2 and on the Platform 1 guide rails 18 and 3 guide rails 19 are assigned to the subframe.
  • the lower rollers 17 of the two scissors 14, 15 are connected to one another in pairs by a transverse axis 20, 21, which carry a pressure piece 22, 23 provided with a threaded bore.
  • the two thrust pieces 22, 23 provided with opposite internal threads are penetrated by a screw spindle 24, the longitudinal halves of which also have opposite threads.
  • the screw spindle is mounted in bearing blocks 25 on the subframe 3 and can be rotated either by a motor 26 or by a ratchet lever 27.
  • the pedestal can be adjusted up and down between the positions according to FIGS. 1 and 2a, with the support scissors 4 unlocked.
  • the Lifting scissors 14, 15 in the area of their central joint 28 are loaded upwards by compression springs 29 compressed in this basic position, the force of the spring being designed to correspond to 90% of the weight to be lifted by the lifting scissors.
  • FIG. 2b an embodiment is sketched in which all arms 30 of the lifting scissors are of the same length.
  • the pedestals are assigned coupling pieces 31, by means of which the screw 24 of adjacent pedestals can be connected to one another in a rotationally fixed manner.
  • the central unlocking device illustrated in FIGS. 3 to 6 is provided so that the unlocking (retraction of the locking pins 11) of the pedestals can also be carried out conveniently — and also for a large number of pedestals that are lined up in series.
  • This consists of a pull rod 32 which is displaceably mounted under the platform 1 and which is each connected to a pull rod ⁇ 2 'by a U-shaped coupling bracket 33 adjacent pedestal bracket 1 'is connectable.
  • the tie rods 32, 32 'near their end have a transverse bore through which the U-shaped coupling bracket 33 can be inserted with its two legs.
  • the U-legs are in turn provided with cross holes for receiving locking pins 34.
  • the souls 35 of the Bowden cables 13 are fastened to the pull rod 32.
  • the jackets of the Bowden cables 13 are rigidly attached to the platform 1 close to the pull rod 32 via bearing blocks 36.
  • Each core 35 runs between two guide rollers 37 rigidly fastened to the bearing block 36, passes through a transverse bore in the pull rod 32 and is fastened to its rear side by a transverse head 38. Since the guide rollers 37 are located in the immediate vicinity of the pull rod 32, a force for pulling the support bolts 11 out of the locking holes 12 is always exerted regardless of the direction of displacement of the pull rod 32 via the Bowden cable core 35.
  • the tool illustrated in FIG. 6, which is designed as a pawl lever 39, can be used to adjust the pull rod 32, in which the force of the load springs of all locking pins 11 must be overcome.
  • the auxiliary tool has a U-shaped base body 40 which is placed with the U opening over the edge of the platform 1.
  • a lever 44 which can be extended by a pipe section 43, is pivotably mounted, which carries at its lower, extended end an articulated tab 45 which is connected via a bracket 33 (see also FIG. 4 ) can be coupled to the end of the pull rod 32.
  • On the axle 42 is also a ratchet wheel 46, which is blocked by a tension spring-loaded pawl 47 against rotation counterclockwise.
  • the locking pin 11 are now pressed by their springs against the side rails or penetrate into the locking openings 12 with a favorable alignment. Possibly. when unlocking still on the material of the side rails resting pegs 11 snap automatically in the subsequent lowering of the scissors 14, 15 in their associated elongated holes 12, after which the scissors 14, 15 are then completely released from the platform 1, so that the loads on Platform can later only be carried by the support scissors 4.
  • the invention is of course not limited to the illustrated embodiment.
  • two parallel spindles can also be provided for adjusting the lifting scissors 14, 15.
  • an electric or electromagnetic drive can also be provided for the unlocking. Because of a possible incorrect actuation of an unlocking device that can be triggered by pressing a button or a switch, the use of an auxiliary device that can be removed again after carrying out a height adjustment is preferred, since unauthorized or unwanted unlocking is thus excluded.
  • the platform 1, the upper frame 2 and the foot frame 3 of the pedestal are indicated schematically.
  • the legs 50, 51 of the lifting scissors each have rollers 52, 53, 54, 55 at their ends.
  • FIG. 9 shows the lower rollers 52, 52 'and 54, 54' of the two lifting scissors one behind the other in FIG. 7.
  • These wheels are mounted together with the lower ends of the lifting shank legs 50, 50 ', 51, 51' by means of axle bolts 56, 56 'in frame-shaped cross struts 57, 58 which are penetrated by the drive screw spindle 24, which has two opposing threaded sections.
  • the two opposing threaded sections of the spindle 24 are each received in threaded pieces 22, 23, which are firmly welded to the longitudinal bars of the cross struts 57, 58.
  • the spindle 24 lies in the same horizontal plane as the axle bolts 56, 56 '.
  • the central axes of the lower axle bolts 56 represent the points P1, at which the driving force exerted via the spindle is introduced into the scissors 50, 51.
  • the The central axes of the upper wheel bearing bolts represent the points P2 at which the scissors 50, 51 transmit their force to the wheels 53, 55.
  • the central lifting scissor joint 59 lies above the connecting line V between the force application point P1 and the shaft release point P2 of each lifting scissor leg. This also results in a favorable torque arm for a first start-up of the lifting scissors in the lowest position according to FIG. 8.
  • the scissor legs 50, 51 each have the shape of elongated rhombuses amf, the central joint 59 being arranged near the upper central rhombus corner.
  • angled scissor legs 60, 61 are provided which carry sliding pieces 62 at their upper ends for supporting the platform 1.
  • the force delivery points P2 are here at the points of contact of the sliders with the platform 1.
  • the central joint 59 'lies above the connecting line V between the force application point P1 and the force delivery point P2.
  • the scissor legs 63, 64 in turn carry rollers 65, 66 at their upper ends, so that here the upper power delivery points P2 of the scissor legs again coincide with the axes of the wheels 65, 66, the middle pivot point 59 '' of the scissors Leg 63, 64 is here in the lowest scissor position approximately in the same horizontal plane as the force output points P2 and at the same time on the connecting line between the force application point P1 and the contact point P3 of the impeller 66 on the platform 1.
EP80108114A 1980-01-31 1980-12-22 Plateforme à tréteau déplaçable en hauteur pour scènes de théâtre ou analogues Expired EP0034221B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80108114T ATE5272T1 (de) 1980-01-31 1980-12-22 Hoehenverstellbarer podestbock fuer theaterbuehnen oder dgl.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19803003392 DE3003392A1 (de) 1980-01-31 1980-01-31 Hoehenverstellbarer podestbock fuer theaterbuehnen o.dgl.
DE3003392 1980-01-31
DE3008557 1980-03-06
DE19803008557 DE3008557A1 (de) 1980-03-06 1980-03-06 Hoehenverstellbarer podestbock fuer theaterbuehnen oder dgl.

Publications (2)

Publication Number Publication Date
EP0034221A1 true EP0034221A1 (fr) 1981-08-26
EP0034221B1 EP0034221B1 (fr) 1983-11-09

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Family Applications (1)

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EP80108114A Expired EP0034221B1 (fr) 1980-01-31 1980-12-22 Plateforme à tréteau déplaçable en hauteur pour scènes de théâtre ou analogues

Country Status (2)

Country Link
EP (1) EP0034221B1 (fr)
DE (1) DE3065564D1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509709A1 (fr) * 1981-07-20 1983-01-21 Briand Ets Dispositif articule du type a polygones deformables adaptable aux appareils elevateurs, de manutention, de supportage ou d'ancrage
GB2125007A (en) * 1982-08-09 1984-02-29 Kenneth Mortimer Scissor type jack
GB2135590A (en) * 1981-09-03 1984-09-05 Elevator Gmbh Theatrical stage
US4565343A (en) * 1983-08-18 1986-01-21 Burroughs Corporation Terminal elevating mechanism
EP0347280A1 (fr) * 1988-06-17 1989-12-20 José Romero Installation de salon de coiffure pour enfants
DE3908984A1 (de) * 1989-03-18 1990-09-20 Eisenberg Hans Jochen Hoehenverstellbarer podestbock
EP0520137A1 (fr) * 1991-06-22 1992-12-30 Eisenberg, Hans-Jochen Plateforme de lavage pour composer des scènes de théatre ou analogue
CN106586387A (zh) * 2016-12-16 2017-04-26 昆明理工大学 一种升降移动装置
CN110844830A (zh) * 2019-11-05 2020-02-28 昌河飞机工业（集团）有限责任公司 一种双剪叉式手摇同步升降托架
CN111170199A (zh) * 2018-11-09 2020-05-19 上海申龙客车有限公司 一种客车装配用气囊举升机
CN111924748A (zh) * 2020-08-23 2020-11-13 吉林大学 一种应用于特种环境的底面孔洞三爪对中移动平台
CN112158761A (zh) * 2020-10-15 2021-01-01 武汉德创天成科技发展有限公司 一种建筑工程多功能运料装置
CN113266176A (zh) * 2021-06-07 2021-08-17 佳木斯大学 一种音乐演奏用便于展开的舞台
CN114180487A (zh) * 2021-12-20 2022-03-15 国网河南省电力公司洛阳供电公司 一种电力工程用电力设备安装提升装置
DE102020216347A1 (de) 2020-12-18 2022-06-23 Continental Engineering Services Gmbh Antriebsanordnung für einen Scherenhub mit einer mechanischen Vorspannung
CN115306189A (zh) * 2022-08-25 2022-11-08 四川协鑫施沃德光电科技有限公司 一种舞美装置

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CN102849649A (zh) * 2011-06-28 2013-01-02 刘振安 一种构造简单、搬运轻便、容易操作的多功能升降平台
CN102490068B (zh) * 2011-11-29 2014-11-05 山东建筑大学 一种机床主轴搬运装置
CN103101826A (zh) * 2012-11-12 2013-05-15 无锡市洪成造纸机械有限公司 一种电机摆动式驱动丝杠结构
CN103174306B (zh) * 2013-03-19 2015-06-10 陕西科技大学 用于大合唱的多功能桁架舞台及其操作方法
CN112211443A (zh) * 2020-09-03 2021-01-12 无锡迪诺卡金属制品有限公司 一种新型舞台支架

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641486C (de) * 1937-02-02 Friedrich Stupp Hbebuehne
FR1211725A (fr) * 1958-10-04 1960-03-17 Jurine Ets Perfectionnements aux tables élévatrices
FR1459313A (fr) * 1965-10-08 1966-04-29 Dispositif de levage de plancher en particulier pour scène de théâtre

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2305145C2 (de) * 1973-02-02 1975-03-06 Hans Jochen 5600 Wuppertal Eisenberg Von Hand höhenverstellbarer Podestbock für Theaterbühnen od.dgl

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641486C (de) * 1937-02-02 Friedrich Stupp Hbebuehne
FR1211725A (fr) * 1958-10-04 1960-03-17 Jurine Ets Perfectionnements aux tables élévatrices
FR1459313A (fr) * 1965-10-08 1966-04-29 Dispositif de levage de plancher en particulier pour scène de théâtre

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509709A1 (fr) * 1981-07-20 1983-01-21 Briand Ets Dispositif articule du type a polygones deformables adaptable aux appareils elevateurs, de manutention, de supportage ou d'ancrage
GB2135590A (en) * 1981-09-03 1984-09-05 Elevator Gmbh Theatrical stage
GB2125007A (en) * 1982-08-09 1984-02-29 Kenneth Mortimer Scissor type jack
US4565343A (en) * 1983-08-18 1986-01-21 Burroughs Corporation Terminal elevating mechanism
EP0347280A1 (fr) * 1988-06-17 1989-12-20 José Romero Installation de salon de coiffure pour enfants
FR2632835A1 (fr) * 1988-06-17 1989-12-22 Romero Jose Installation de salon de coiffure pour enfants
DE3908984A1 (de) * 1989-03-18 1990-09-20 Eisenberg Hans Jochen Hoehenverstellbarer podestbock
EP0520137A1 (fr) * 1991-06-22 1992-12-30 Eisenberg, Hans-Jochen Plateforme de lavage pour composer des scènes de théatre ou analogue
CN106586387A (zh) * 2016-12-16 2017-04-26 昆明理工大学 一种升降移动装置
CN111170199A (zh) * 2018-11-09 2020-05-19 上海申龙客车有限公司 一种客车装配用气囊举升机
CN110844830A (zh) * 2019-11-05 2020-02-28 昌河飞机工业（集团）有限责任公司 一种双剪叉式手摇同步升降托架
CN111924748A (zh) * 2020-08-23 2020-11-13 吉林大学 一种应用于特种环境的底面孔洞三爪对中移动平台
CN112158761A (zh) * 2020-10-15 2021-01-01 武汉德创天成科技发展有限公司 一种建筑工程多功能运料装置
DE102020216347A1 (de) 2020-12-18 2022-06-23 Continental Engineering Services Gmbh Antriebsanordnung für einen Scherenhub mit einer mechanischen Vorspannung
DE102020216347B4 (de) 2020-12-18 2023-02-09 Continental Engineering Services Gmbh Antriebsanordnung für einen Scherenhub mit einer mechanischen Vorspannung
CN113266176A (zh) * 2021-06-07 2021-08-17 佳木斯大学 一种音乐演奏用便于展开的舞台
CN113266176B (zh) * 2021-06-07 2023-01-24 佳木斯大学 一种音乐演奏用便于展开的舞台
CN114180487A (zh) * 2021-12-20 2022-03-15 国网河南省电力公司洛阳供电公司 一种电力工程用电力设备安装提升装置
CN115306189A (zh) * 2022-08-25 2022-11-08 四川协鑫施沃德光电科技有限公司 一种舞美装置

Also Published As

Publication number Publication date
EP0034221B1 (fr) 1983-11-09
DE3065564D1 (en) 1983-12-15

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