WO1989010894A1 - Telescopic camera crane with automatic adjustment of the horizon and with a direct-drive swivelling and tilting head - Google Patents

Telescopic camera crane with automatic adjustment of the horizon and with a direct-drive swivelling and tilting head Download PDF

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Publication number
WO1989010894A1
WO1989010894A1 PCT/DE1989/000282 DE8900282W WO8910894A1 WO 1989010894 A1 WO1989010894 A1 WO 1989010894A1 DE 8900282 W DE8900282 W DE 8900282W WO 8910894 A1 WO8910894 A1 WO 8910894A1
Authority
WO
WIPO (PCT)
Prior art keywords
camera
crane
horizon
tilting
swivelling
Prior art date
Application number
PCT/DE1989/000282
Other languages
German (de)
French (fr)
Inventor
Horst Burbulla
Original Assignee
Horst Burbulla
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 Horst Burbulla filed Critical Horst Burbulla
Publication of WO1989010894A1 publication Critical patent/WO1989010894A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/048—Mobile camera platform

Definitions

  • Telescopic camera crane with automatic leveling and directly driven pan and tilt head
  • the invention relates to a camera crane, the support of which extend and retract telescopically at variable speed, while its counterweight is also proportionally adjusted so that the crane always remains balanced. Furthermore, the image horizon is held by an electric motor while the crane is being raised and lowered. The pan and tilt head is moved directly by electric motors.
  • Camera cranes allow the floating motion of a film or video camera during image acquisition.
  • Camera cranes work according to the "swing principle", in which a carrier is stored in the middle.
  • the pan and tilt head is attached to the camera at one end and counterweights at the other end to compensate.
  • the invention significantly increases the freedom of image design.
  • the camera can be moved and positioned as desired between the minimum and maximum crane radius at infinitely variable speed.
  • the telescopic camera crane simplifies normal filming and enables previously impossible camera movements.
  • the invention is described below with the aid of a drawing.
  • the drawing shows the telescopic camera crane in its shortest and longest state as well as with the highest and lowest camera position.
  • the crane is stored in its center (1). While the carriers are pulled out and in with ropes, the counterweights (2) move away from the center or towards the center.
  • the counterweights travel on a slide on the outermost carrier and are pulled by a toothed belt (3).
  • the toothed belt and the ropes are driven by an electric motor via a common axis. As a result, when the crane arm is almost vertical, the counterweight helps the electric motor push out the beams.
  • the number and position of the counterweights on the slide can be adjusted. This is the only way to adapt the telescopic camera crane to the different camera weights.
  • the center (1) there is a tachometer generator that reads the tilting speed of the crane arm.
  • An electrical amplifier transmits the signal to an electric motor, which always keeps the suspension of the pan and tilt head horizontal via a worm gear.
  • a mercury switch on the suspension (5) continuously calibrates the horizon of the compensation system.
  • the stator is built into the stationary part (6) and the rotor into the rotating part (?) • The camera is rotated absolutely free of play and silently by the magnetic field.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Accessories Of Cameras (AREA)

Abstract

A camera crane comprises a telescopic support which can be extended and retracted at variable speed, with proportional and simultaneous adjustment of its counterweight (2), so that the crane is maintained constantly in stable equilibrium. To ensure that the horizon of the image taken by the camera is maintained constantly horizontal, a tachometer generator arranged at the tilting centre (1) of the crane reads the tilting speed and reproduces it at the suspension of the swivelling and tilting heads by means of an electric amplifier and an electric motor. The axes of the swivelling and tilting heads are rotated directly, i.e. without gears, solely by the magnetic field. The movements of the camera can thus be applied with high precision.

Description

Teleskopkamerakran mit automatischem Horizontausgleich und direktangetriebenem Schwenk» und Neigekopf Telescopic camera crane with automatic leveling and directly driven pan and tilt head
Die Erfindung bezieht sich auf einen Kamerakran, dessen Träger teleskopisch mit variabler Geschwindig¬ keit ein- und ausfahren, während sein Gegengewicht proportional mitverstellt wird, so daß der Kran immer ausbalanciert bleibt. Ferner wird während des Hebens und Senkens des Krans der Bildhorizont mit einem Elektromotor gehalten. Der Schwenk- und Neigekopf wird durch Elektromotore direkt bewegt.The invention relates to a camera crane, the support of which extend and retract telescopically at variable speed, while its counterweight is also proportionally adjusted so that the crane always remains balanced. Furthermore, the image horizon is held by an electric motor while the crane is being raised and lowered. The pan and tilt head is moved directly by electric motors.
Kamerakräne ermöglichen die schwebende Bewegung einer Film- oder Videokamera während der Bildaufnahme. Kamerakräne arbeiten nach dem "Schaukelprinzip", bei welchem ein Träger in der Mitte gelagert wird. An dem einen Ende wird der Schwenk- und Neigekopf mit der Kamera befestigt und an dem anderen Ende zum Ausgleich Gegengewichte.Camera cranes allow the floating motion of a film or video camera during image acquisition. Camera cranes work according to the "swing principle", in which a carrier is stored in the middle. The pan and tilt head is attached to the camera at one end and counterweights at the other end to compensate.
Es existieren Kamerakräne mit fester Länge. Bekannt sind auch Kräne, welche sich durch das Herausnehmen von einzelnen Trägern verkürzen lassen. Ist es notwendig, Kamerabewegungen außerhalb der Schwenk¬ bahn des Kranarms auszuführen, so werden auf dem Boden Schienen gelegt und der Kamerakran auf einem Schienenwagen geschoben. In der Film- und Video- industrie sind Teleskopkamerakräne noch nicht im Einsatz. Da die Kamera das Bild immer waagerecht aufnehmen muß, ist während des Hebens und Senkens des Krans ein Horizontausgleichssystem notwendig. Traditionell wird ein kleiner zweiter Träger über dem Hauptträger so gelagert, daß es ein bewegliches Parallelogramm ergibt. Es ist auch ein Horizont¬ ausgleichssystem bekannt, bei welchem im Kranträger eine Achse entsprechend der Neigebewegung gedreht wird und somit die richtige Horizontposition an die Kamera überträgt. Beide Systeme sind bei Kränen mit stufenlos veränderbaren Längen nicht anwendbar. Schwenk- und Neigeköpfe werden normaler¬ weise mit elektrischen Getriebemotoren bewegt. Dies impliziert ein Getriebespiel und eine Vibrationsanfälligkeit der Kamera.Fixed-length camera cranes exist. Cranes are also known, which can be shortened by removing individual carriers. If it is necessary to carry out camera movements outside the swivel path of the crane arm, rails are laid on the floor and the camera crane is pushed on a rail carriage. In the film and video industry, telescopic camera cranes are not yet in use. As the camera always has to take the picture horizontally, a leveling system is required when lifting and lowering the crane. Traditionally, a small second beam is placed over the main beam in such a way that it creates a movable parallelogram. A horizontal compensation system is also known, in which an axis in the crane girder is rotated in accordance with the tilting movement and thus transmits the correct horizon position to the camera. Both systems cannot be used with cranes with continuously variable lengths. Pan and tilt heads are normally moved with electric geared motors. This implies gear play and the camera is susceptible to vibration.
Die Erfindung, der Teleskopkamerakran, vergrößert die Freiheit der Bild estaltung erheblich. Die Kamera kann zwischen dem minimalen und maximalen Kranradius beliebig mit stufenloser Geschwindig¬ keit bewegt und positioniert werden.The invention, the telescopic camera crane, significantly increases the freedom of image design. The camera can be moved and positioned as desired between the minimum and maximum crane radius at infinitely variable speed.
Für Kamerafahrten unter ,5 eter ist es nicht mehr notwendig, Träger herauszunehmen und Schienen auf den Boden zu legen, was normalerweise viel Zeit in Anspruch nimmt. Der Teleskopkamerakran vereinfacht normale Dreharbeiten und ermöglicht bisher unmögliche Kamerafahrten. Im folgenden wird die Erfindung mit Hilfe einer Zeichnung beschrieben. Die Zeichnung zeigt den Teleskopkamerakran in seinem kürzesten und längsten Zustand sowie mit der höchsten und tiefsten Kamera- position.For tracking shots under 5 eter it is no longer necessary to take out carriers and put rails on the floor, which usually takes a lot of time. The telescopic camera crane simplifies normal filming and enables previously impossible camera movements. The invention is described below with the aid of a drawing. The drawing shows the telescopic camera crane in its shortest and longest state as well as with the highest and lowest camera position.
Der Kran ist in seinem Zentrum (1) gelagert. Während die Träger mit Seilen heraus- und herein¬ gezogen werden, bewegen sich die Gegengewichte (2) vo Zentrum weg bzw. zu Zentrum hin. Die Gegenge¬ wichte fahren auf einem Schlitten auf dem äußersten Träger und werden von einem Zahnriemen (3) gezogen. Der Zahnriemen und die Seile werden über eine gemeinsame Achse von einem Elektromotor angetrieben. Dadurch hilft, wenn der Kranarm fast vertikal steht, das Gegengewicht dem Elektromotor beim Herausschieben der Träger. Die Gegengewichte können in ihrer Anzahl und ihrer Position auf dem Schlitten Justiert werden. Nur so läßt sich der Teleskopkamerakran an die ver- schiedenen Kameragewichte anpassen.The crane is stored in its center (1). While the carriers are pulled out and in with ropes, the counterweights (2) move away from the center or towards the center. The counterweights travel on a slide on the outermost carrier and are pulled by a toothed belt (3). The toothed belt and the ropes are driven by an electric motor via a common axis. As a result, when the crane arm is almost vertical, the counterweight helps the electric motor push out the beams. The number and position of the counterweights on the slide can be adjusted. This is the only way to adapt the telescopic camera crane to the different camera weights.
Im Zentrum (1) befindet sich ein Tachogenerator, welcher die Neigegeschwindigkeit des kranarms liest. Ein elektrischer Verstärker gibt das Signal weiter an einen Elektromotor, welcher über ein Schneckenge¬ triebe die Aufhängung des Schwenk- und Neigekopfs immer horizontal hält. Ein Quecksilberschalter an der Aufhängung (5) eicht den Horizont des Ausgleichs¬ systems fortwährend. Im Schwenk- und Neigekopf ist der Stator in den stehenden Teil (6) eingebaut und der Rotor in den sich drehenden Teil (?)• Die Kamera wird absolut spielfrei und lautlos von dem magnetischen Feld gedreht. In the center (1) there is a tachometer generator that reads the tilting speed of the crane arm. An electrical amplifier transmits the signal to an electric motor, which always keeps the suspension of the pan and tilt head horizontal via a worm gear. A mercury switch on the suspension (5) continuously calibrates the horizon of the compensation system. In the pan and tilt head, the stator is built into the stationary part (6) and the rotor into the rotating part (?) • The camera is rotated absolutely free of play and silently by the magnetic field.

Claims

Patentansprüche Claims
1. Teleskopkamerakran mit gekoppeltem Antrieb für1. Telescopic camera crane with coupled drive for
Teleskopträger und Gegengewichte. Die Gegengewichte sind in ihrer Anzahl und in ihrer Position vom Zentrum auf ihrem Schlitten justierbar.Telescopic carrier and counterweights. The number and position of the counterweights can be adjusted from the center on their slide.
2. Elektronisches Horizontausgleichssystem für Kamera¬ kräne bei welchem ein Tachogenerator im Zentrum (1) die Kranneigegeschwindigkeit liest und ein elektrischer Verstärker mit einem Elektromotor die Plattform (5) für Schwenk- und Neigekopfe entsprechend verstellt. Ein Quecksilberschalter eicht den Horizont fortwährend.2. Electronic horizon compensation system for camera cranes in which a tachogenerator in the center (1) reads the crane tilting speed and an electric amplifier with an electric motor adjusts the platform (5) for pan and tilt heads accordingly. A mercury switch constantly calibrates the horizon.
3. Direkter elektromotorischer Antrieb am Schwenk- und Neigekopf. 3. Direct electric motor drive on the pan and tilt head.
PCT/DE1989/000282 1988-05-05 1989-05-05 Telescopic camera crane with automatic adjustment of the horizon and with a direct-drive swivelling and tilting head WO1989010894A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883815342 DE3815342C1 (en) 1988-05-05 1988-05-05
DEP3815342.4 1988-05-05

Publications (1)

Publication Number Publication Date
WO1989010894A1 true WO1989010894A1 (en) 1989-11-16

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478916A1 (en) * 1990-10-02 1992-04-08 PANTHER GmbH, HERSTELLUNG, VERTRIEB UND VERLEIH FILMTECHNISCHER GERÄTE Camera crane
EP1721213A1 (en) * 2004-03-01 2006-11-15 Chapman/Leonard Studio Equipment Telescoping camera crane
US7854555B2 (en) 2004-03-01 2010-12-21 Chapman/Leonard Studio Equipment, Inc. Camera platform stabilizing systems
US8033742B1 (en) 2010-04-15 2011-10-11 Chapman/Leonard Studio Equipment, Inc. Telescoping camera crane
US8403486B2 (en) 2009-08-06 2013-03-26 Leonard T. Chapman Hydraulic shutoff control valve system for a camera crane
US8579525B2 (en) 2009-08-06 2013-11-12 Chapman/Leonard Studio Equipment, Inc. Hydraulic stop valve for a camera crane
US8727318B2 (en) 2012-07-19 2014-05-20 Chapman/Leonard Studio Equipment, Inc. Hydraulic float down valve for a camera dolly or camera crane

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10147602B4 (en) 2001-09-26 2004-11-04 Horst Burbulla Unlimited tilting camera crane
DE10356982B3 (en) * 2003-12-05 2005-09-01 Walter Tiefenbrunn camera crane
GB2422139B (en) * 2004-12-10 2007-05-30 Peter Adamiec Telescopic camera crane
DE102012107265A1 (en) 2012-08-08 2014-02-13 Michael Goergens Device for the stabilized guidance of an image recording device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224901A (en) * 1937-07-20 1940-12-17 Radio Kelth Orpheum Corp Camera dolly
FR921011A (en) * 1946-02-01 1947-04-24 Lifting device for cinematographic shots
FR1168305A (en) * 1956-07-26 1958-12-05 Konstrucktions U Montagebetr F Trolley carrying a lifting device for cinematograph and television shots
US4116304A (en) * 1977-04-25 1978-09-26 Durnell Engineering, Inc. Aerial personnel lift including means for automatically controlling the position of the personnel bucket
WO1984002199A1 (en) * 1982-12-01 1984-06-07 Garrett W Brown Improved suspension system for supporting and conveying equipment, such as a camera
DE3334428A1 (en) * 1983-09-23 1985-04-11 Hans H. 5000 Köln Heller Carriage with a camera
DE3628782A1 (en) * 1986-08-25 1988-03-03 Hans H Heller Camera crane dolly for film or television recording

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627560A (en) * 1949-08-01 1953-02-03 Jay M Eitel Control mechanism for electrically driven apparatus
FR2486050B2 (en) * 1980-07-04 1987-02-27 Buzzichelli Lilian LIFTING APPARATUS COMPRISING AN ARROW AND A COUNTERWEIGHT WITH ADJUSTABLE RESPECTIVE POSITIONS

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2224901A (en) * 1937-07-20 1940-12-17 Radio Kelth Orpheum Corp Camera dolly
FR921011A (en) * 1946-02-01 1947-04-24 Lifting device for cinematographic shots
FR1168305A (en) * 1956-07-26 1958-12-05 Konstrucktions U Montagebetr F Trolley carrying a lifting device for cinematograph and television shots
US4116304A (en) * 1977-04-25 1978-09-26 Durnell Engineering, Inc. Aerial personnel lift including means for automatically controlling the position of the personnel bucket
WO1984002199A1 (en) * 1982-12-01 1984-06-07 Garrett W Brown Improved suspension system for supporting and conveying equipment, such as a camera
DE3334428A1 (en) * 1983-09-23 1985-04-11 Hans H. 5000 Köln Heller Carriage with a camera
DE3628782A1 (en) * 1986-08-25 1988-03-03 Hans H Heller Camera crane dolly for film or television recording

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478916A1 (en) * 1990-10-02 1992-04-08 PANTHER GmbH, HERSTELLUNG, VERTRIEB UND VERLEIH FILMTECHNISCHER GERÄTE Camera crane
EP1721213A1 (en) * 2004-03-01 2006-11-15 Chapman/Leonard Studio Equipment Telescoping camera crane
EP1721213A4 (en) * 2004-03-01 2007-04-11 Chapman Leonard Studio Equip Telescoping camera crane
US7854555B2 (en) 2004-03-01 2010-12-21 Chapman/Leonard Studio Equipment, Inc. Camera platform stabilizing systems
US8403486B2 (en) 2009-08-06 2013-03-26 Leonard T. Chapman Hydraulic shutoff control valve system for a camera crane
US8579525B2 (en) 2009-08-06 2013-11-12 Chapman/Leonard Studio Equipment, Inc. Hydraulic stop valve for a camera crane
US8033742B1 (en) 2010-04-15 2011-10-11 Chapman/Leonard Studio Equipment, Inc. Telescoping camera crane
US8251599B2 (en) 2010-04-15 2012-08-28 Chapman/Leonard Studio Equipment, Inc. Telescoping camera crane
US8727318B2 (en) 2012-07-19 2014-05-20 Chapman/Leonard Studio Equipment, Inc. Hydraulic float down valve for a camera dolly or camera crane

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Publication number Publication date
DE3815342C1 (en) 1989-10-12

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