DE2405711A1 - TELESCOPIC SUSPENSION MAST FOR TELEVISION AND FILM RECORDING STUDIOS - Google Patents

Description

Herne, 8000 Munich 23,

Freiligrathstrasse 19 Λ "·» '* Ι ·% # «θυθΙ» Eisenacher Strasse 17

P.O. Box 140 Ii - ρ I. '' I Π g. Η. Π. D α Π Γ patient app. BeUler

Pat. Herrmann-Trentepohl Dinl - PhVS Eduard Betzier Telephone: 39 B011

Telephone: 51013 Uipi. - l-nys. CUUaTd ΟβΙΖΙβΓ " _{3g gfl} ^

^'10 J ⁴ Dipl.-Ing. W. Herrmann-Trentepohl ³⁹⁸⁰¹³

Telegram address: ra f telegram address.

Bahrpatents Herns PATENTANWÄLTE Babetzpat Munich

Telex 08 229 853 Telex5215360

Γ. -f 4 U 5 / f | Bank accounts:

Bayrische Vereinsbank Munich 952 Dresdner Bank AG Herne 7-520 Postscheckkonto Dortmund 558 68

Ref .: M04612

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Munich

MORS MATERIEL,
F-93170 BA & NOLET, France

Telescopic suspension mast for television and film recording

studios

It is currently used on the stages of television and film recording studios Teleskopauf hanging masts or rods, on which essentially projectors or other additional devices hang.

These masts or rods "consist of several telescopic tubes circular cross-sections that slide into each other under the action of actuators, which are either of a manual type (such as winches or the like) or of an electrical type (hoisting motors) and which can be stored on a trolley that moves on a roir track, which is on a floor above the stage, Called grid, is provided.

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Such telescopic masts or rods are now to be developed and improved according to the invention.

A telescopic mast according to the invention comprises: a plurality of tubes of square or rectangular cross-section, which slide into each other, and an outer tube circular Cross-section with 4 sectors on the inside to allow the sliding of the pipe with a rectangular cross-section, which is located furthest out to allow; Further provide facilities for guidance and serve as a limit stop for the furthest outside in the circular Pipe located in the pipe with a rectangular cross-section. Means for guiding the pipes with respect to one another during the development of the mast are provided, each acting on its lower and upper part; as Devices that ensure that the pipes are blocked with respect to one another when the mast is fully extended.

According to a feature of the invention, there are those responsible for guiding the pipes under the action of the lower part Devices for each tube from a group of 8 shoes, which extend over the circumference of the tube under consideration are distributed in such a way that a pressure is exerted on each side of the edges of the tube which is in the considered Tube slides, can be regulated.

According to a further feature of the invention, there are facilities for guiding the pipes in their upper part of plugs housed in the respective ends of the tubes, each of these plugs being cylindrical Has outer collar, which extends to the middle of the -eiten of the tube in which this plug on-

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taking pipe slides, supports itself.

According to a further feature of the invention "exist for blocking the path of the tubes with respect to mutual care devices from pistons that are pushed back by a spring and are attached to each tube, with the piston that the Tube on which it is mounted is assigned, is arranged such that it is at the end of travel or stroke of the tube slides on an inclined profile that is recessed in the opposite tube and finally against a shoulder in the last-mentioned tube comes into abutment at the end of this profile.

An example embodiment of the invention will now be explained in more detail with reference to the accompanying drawing in which:

Fig. 1 shows an overall view with the mast in the extended position;

Pig. Figure 2 is a longitudinal section through the mast according to the invention;

Fig. 3 is an end view of Fig. 2;

Fig. 4 shows in a larger representation devices which are provided in order to guide the To provide pipes along their edges; and

Fig. 5 is a fragmentary view showing the locking means of one pipe with respect to another shows.

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fig, I ^ eig ^ emeu extended telescopic mast 10, on which a prc: ekt; r depends. This mast 10 is fixed to a connected with wheels' / seen platform 12, which the movements of the mast on the stage or the "technical litter "14. This Pig. is essentially there to the field of application of the invention outline.

According to the Pig. 2 to 5 of the drawings consists of the mast according to the invention from a variety of tubes with rectangular cross-section, such as. 3. 16. These tubes slide into one another. This is the furthest to enable the mast according to the invention to be adapted to existing installations external tube (tube 18 in the drawing) of circular cross-section. Inside are sectors like 2 D provided, which are intended to prevent the sliding of the xtohrs to ensure with rectangular cross-section 16 ', which is directly concentric to it. These sectors are attached to the circumference of the rectangular tube 16 '.

In the lower part (left side when looking at Pig. 2) of the circular tube 18, a sector 21 is attached, which cooperates with a sector 22 which is fixed in the upper part of the outer tube of rectangular cross-section 16 ' is to serve as a travel limiter stop for the latter tube as soon as it comes into the lower position. This sector 22 simultaneously supports a sliding movement of the tube 16 'in a circular manner for a favorable guidance Tube 18 at.

According to the invention, devices for purging the pipes. 16 provided during their sliding movement with respect to each other.

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These devices are of two types: one acts on the lower part of the pipes, the other on their upper part.

The devices acting on the lower part of the tubes are generally identified by the reference numeral 23 in Pig. 2 " and are shown in greater detail in FIGS. They are designed so that they each have an adjustable Apply pressure on 8 points distributed around the circumference of the pipe they are acting on. These Points are on either side of the edges of the pipe.

Reference is now made to FIGS. 4 and 5. It can be seen that these guide devices take the form of a through a Wedge 25 at the lower end of the tube 16 in question held clamping flange 24. This clamping flange has 4 longitudinal slots 26 which are arranged on its circumference in such a way that support surfaces or shoes 27 are in contact be defined with the pipe 16a, which is arranged directly inside the pipe 16. 8 screws 28 allow an adjustable pressure to be exerted on the shoes 27 as desired. These screws 28 are on each side of the edges of the tube 16a.

By tightening the screws 28 to a greater or lesser extent, the pressure of the shoes 27 on the tube 16a is regulated and so can favorable sliding and effective guidance of the pipe 16a in the pipe 16. Preferably, the stores and shoes 27 are clad or covered with polypropylene.

Devices are mounted in clamping flanges such as 24, which at the end of the stroke for blocking the pipes with respect to one another care for.

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According to this exemplary embodiment, these devices consist of one or more pistons 29, which are shown in FIG a recess of the clamping flange 24 and supported by a spring 30 against the outer surface of the inner tube 16a are pushed back. The latter tube includes an external profile near its upper end with inclined surface 31> which ends in a shoulder 32 which serves as a stop for a piston 29. Achieved the tube 16a its lower end position, the piston 29, which was previously sunk in its bearing, is replaced by a Spring 30 is pushed back and slides along the ramp 31. At the end of the stroke of the tube 16a, it comes into abutment against the shoulder 32 and blocks the tube 16a with respect to it of the pipe 16.

According to the measure according to the invention, devices are also provided for guiding the pipes with respect to one another in their upper part (right side of the figure). These facilities are designed to be their Have an effect at points located in the middle of the surfaces of the pipes with a rectangular cross-section.

These devices consist of closures or plugs like 33. Each of these closures 33 has a lower end with a right cross section, which is stored in a tube 16 is; its upper end consists of a circular collar, which is dimensioned and positioned so that it is at four points of its circumference is supported against points in the middle of the inner sides of the tube with a rectangular cross-section are located in which the tube 16 receiving this plug slides.

Each of these pots 33 has two milled holes,

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which ensure the passage τοη cables 34 ₉ which together with the wedges 35 form the usual safety system for telescopic masts.

The various above-described guide devices a ₅ plugs 33 and clamping flanges 24 allow the tubes to slide smoothly into one another and resist any torsional movement of these tubes.

The invention has been developed with a view to brevity only described with reference to a single embodiment. Changes and modifications are within the scope of the invention "

Claims - 8 -

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Claims (9)

- 3 ί A1ISB TAN 3PMi OHE 1. Telescopic suspension mast for stages or recording rooms -on Pernseh- or film studios, characterized by a plurality of tubes with a rectangular cross-section that slide into one another; and an outer tube of circular cross section which is internally provided with sectors for sliding of the outermost tube of rectangular cross section; by devices that ensure the guidance and the stop at the meg end or stroke end of the pipe with a rectangular cross-section, which is arranged furthest outward in the circular pipe; Means for guiding the pipes with respect to one another during the development of the mast, acting respectively on their lower part and their upper part; and by means for blocking the tubes with respect to one another when the mast is extended. 2. Mast according to claim 1, characterized in that the for .Guide and path limitation of the tube of Rectangular cross-section in the circular tube providing facilities are formed on the one hand by a firmly connected to the circular tube and positioned in the lower part and on the other hand by a sector firmly connected to this rectangular tube in the upper part arranged sector. 3. Telescopic mast according to claim 1, characterized in that the for guiding the tubes under action on their lower part providing facilities for each tube formed by an arrangement of 8 shoes are, which are distributed over the circumference of the tube under consideration in such a way that they have a pressure on each Side of the edges of the pipe, which is in the considered 409834/0347 ⁹ " Tube slides, exercise, this pressure being adjustable or controllable by any suitable means. 4. Telescopic mast according to claim 3> characterized in that the care for the adjustment of the pressure of the shoes Devices consist of screws that act directly on each shoe. 5. Telescopic mast according to claim 3 »characterized in that that the shoes are covered with polypropylene. 6. Telescopic mast according to one of claims 3 to 5 »characterized in that each of the arrangements of 8 shoes in the form of a clamping flange with a rectangular cross-section is provided which is attached to the lower end of each tube and held in place by a wedge is. 7. Telescopic mast according to one of claims 1 to 6, characterized in that the tubes for! in their part providing facilities are formed by plugs placed in the respective ends of the tubes are stored, each of these plugs is provided with a cylindrical outer collar, which is against the centers of the sides of the tube in which the tube receiving this plug slides. upper 8. Telescopic mast according to one of claims 1 to 7, characterized in that the for blocking the Pipes at the end of the road with respect to each other providing facilities are formed by shoes that are pushed back by a spring and are attached to each tube, with the shoe corresponding to the tube on which it is attached. 4 0 983 A / 0347 - io - - ίο - is assigned, is arranged in such a way that it is or the end of the path of the pipe slides on an inclined profile provided in the pipe opposite it and finally comes to rest against a shoulder in the latter tube at the end of this profile. 9. Telescopic mast according to one of claims 6 "to 8, characterized in that each of the blocking shoes is mounted in the clamping flange with a rectangular cross-section attached to the lower end of each of the tubes. 409834/0347