DE8900981U1 - Manual device for moving people in the stage area for theatre and show purposes - Google Patents

Description

II. Description

The invention relates to manual devices for moving people in the stage area (also called flying devices) for theater and show purposes. Manual devices for moving people in the stage area for theater and show purposes, so-called flying devices, have been known in manual form for centuries. Machine-operated devices have also been in use for decades. The flying performer can,

by means of this device in a plane two-dimensional scenic flight movement

carry out.

1 * t · f

A major disadvantage of manually operated systems is that the vertical movement of the flying person is achieved by means of a hand counter-pull to which the guide rail (8) is attached. The "hand counter hoist" commonly used in theatres is a pulling device that runs parallel to the ramp and usually extends over the entire width of the stage. Depending on the load to be lifted, a counterweight appropriate to the load must be attached to a counterweight slide that runs along the side wall of the stage. The load is then countered and only the friction of the system must be overcome when moving the load. If the hand counter hoist is used as a lifting device for pulling, there are several disadvantages. In order to release the person from the load rope, the counterweight must be lifted, as the rope tension caused by the counterweight makes unhooking impossible. Secondly, it is not possible to change the flight height quickly during the flight, as the total momentum (- double the flight load) is too large.

A second significant disadvantage arises from the fact that the conventional load rope is also guided down to the load (10) via a rope deflection pulley in the trolley, as in Fig. 1, but then runs on the load (10) through a loose pulley before being guided back up and deflected in the trolley. This loose pulley enables the load to be moved horizontally without changing its height. This loose pulley is difficult to hide visually behind the actor's head and represents a significant safety risk. It happens now and again that hair or costume parts are pulled into the pulley by the rope.

A further disadvantage of this system is that sometimes an unpleasant twisting behavior occurs, especially with new ropes, since one of the load ropes is right-handed and the twisting behavior of both rope strands towards the loose pulley even adds up. The invention is now based on the task of eliminating the disadvantages mentioned by means of a different system.

The new system is able to completely dispense with load counterweights. Instead of counterweights, the safety of the flying performer is increased by

ensures that a commercially available personal abseiling device is integrated into the system in a special 4a.-.:. _?i application format. .

r. Secondly, the new rope guide (Lz), which is connected from the fixed point of the flight deck (fO}

over several rope pulleys to the fixed point (16/22), as well as at (Le)*"*·

% the use of a left-hand and a right-hand rope (L1/L2). A twisting behaviour. . ^

the load is no longer possible. With the new rope guide it is above all ·

It has been achieved that the annoying loose roller on the ruglast is no longer needed.

■ · · t · •

The commercially available RGL or the slightly faster RGL-IO (7) from Mittelmann can be used as the safety-related core of the system. The RGL-10 (5) is used in the opposite direction to that intended, by being attached to the ground. The core-sheath plastic rope (4/8) that runs through the device is limited to a maximum speed of 1.4 - 1.7 m/s, depending on the load. One end of the rope (4) runs over the rope pulley (6), which is part of the upper block of the pulley block (1), to the fixed point (5). The second end of the rope of the RGL-IO (7)

H runs over a cable pulley attached at the height of the guide rail to an approximately

10 - 15 kg weight (9). This weight ensures that when pulling up the Load with the pulley (1), at the rope end (26) the safety rope (4/8) is pulled through the device (7) and thus always kept taut. If the load is accidentally

y released on the pull rope (26), the RGL-IO (7) takes over the falling load

dampened and limits the falling speed to I - 1.7 m/s depending on the counterweight (9).

^: This means that the counterweight that would otherwise flatten the load is no longer necessary.

The pulley (1) is needed for three reasons:

1. There must be a gear ratio that reduces the load.

2. This results in the need for two loose rollers (14/19) in the Siiti guide system, which in turn double the pulling force required to lift the load.

3. The pulley block also offers the possibility of varying the gear ratio depending on the reeving. This would mean that the loose rollers (14/19)

% necessary traction force doubled, a reeving means no gear ratio,

·, i.e. the ratio of load to tensile force is -1:1. A double reeving

(3 ropes, 2 pulleys) corresponds to the gear ratio 1 : 0.66. The

Triple reeving (2 pulleys on the loose block and 1 pulley below with 4 supporting ropes) results in a transmission ratio of 1:0.5.

Tests have shown that the transmission ratio 1 : 0.5 plus

System friction is still relatively easy to manage. If the person to be lifted weighs more than 75 - 100 kg, further reeving can be carried out at the expense of the lifting speed. The rope guide of the right-handed rope (Li) or the left-handed rope (L2) Fig. 1, which runs from the fixed point of the load (10) over four rope deflection pulleys '{*<1/12//?3/&iacgr;5 or 17/18/20/2*} and over js &egr;&iacgr;&pgr;&egr;'essSsi!urii'sr;kro!!E (14/19) to S'ufo'·

Fixed point (16/22) enables the horizontal movement of the load or the.!

Trolley (23) with a conventional "curtain hoist" (Fig. 2), without the load changing its height.

Fig. 1 only shows the lifting device of the system. Fig. 2, which only shows the horizontal travel device operated by means of the cable (28), has been divided into two drawings for better understanding. Likewise, all cable pulleys are positioned close to one another.

The trolley (23), which consists of a steel housing suspended on four ball-bearing Vulkollan wheels (27), houses the two rope deflection pulleys Fig. 1 (11/17), which guide the load rope Lt or Lz to the fixed point of the load (10).

The operating cable (28) of the horizontal travel device (Fig. 2), which is kept under tension by the loose roller with the weight (29), runs from the fixed point on the trolley (33) over the yokes (31/29/30/32) to the feet pin on the trolley (34). The load (10) is moved horizontally by pulling the cable (28) up or down.

The guide rail (flying gauge) (24) is a rail that can be designed in a variety of ways and must be hanged horizontally and evenly (25) to ensure quiet and easy running.

Claims (3)

I. Protection claims Manual device for moving people in the stage area for theater;. Show purposes. , 1. The lifting block (1/2) consisting of five pulleys (3) is characterized in that its upper movable cylinder (1), consisting of deflection rollers (3), is guided by means of the safety rope (4) from the fixed point (5) via an additional deflection roller (6) which in turn is attached to the upper movable cylinder (1), is connected to the safety device (7) and that a weight (9) is attached to the outgoing safety rope end (8). .,' 2. The manual device for moving people in the stage area for theater and show purposes according to claim 1 is characterized in that the lifting rope (Lt) is guided from a fastening point on the load (10) via a deflection roller on the trolley (11) and via a deflection roller on the end of the running rail (12) then again via a deflection roller on the other end of the running rail (13) via the deflection roller (14), which in turn is attached to the movable lifting plate (d), and finally via a deflection roller on the same end of the running rail (15) and is then attached to the trolley (16). 3. The manual device for moving people in the stage area for thriller and show purposes according to claim 1 is characterized in that the lifting rope (Lx) is guided from a fastening point on the load (10) over a deflection roller on the trolley (17) and over a deflection roller on the end of the track (18) and then again over a deflection roller (19), which in turn is attached to the movable lifting block (1) and a deflection roller on the same end of the track (20) and finally over a deflection roller on the other end of the track (21) and then attached to the trolley (22).