RU105183U1 - DEVICE FOR LIFTING AND LOWERING DECORATIONS - Google Patents

Abstract

 1. A device for raising and lowering the scenery, containing a rod for fixing the upper edge of the scenery on it, a shaft for raising the scenery, characterized in that the cable is connected to the shaft, the ends of which are connected to the bar, and the shaft is made with drums with the possibility of winding a cable on them . ! 2. The device according to claim 1, characterized in that on the sections of the cables adjacent to the rod, lamellas are installed with the possibility of winding them on the shaft with the formation of a cylindrical surface for winding decorations. ! 3. The device according to claim 1, characterized in that the outer shaft has a recess for catching the rod. ! 4. The device according to claim 1, characterized in that the shaft is hollow and mounted on a fixed axis mounted on a supporting structure, and a shaft rotation drive is installed on an axis inside the shaft or on the supporting structure.

Description

The utility model relates to stage equipment, namely, devices for raising and lowering the scenery.

A device for raising and lowering decorations is known, comprising a rod for securing the upper edge of the decorations on it, a cable-block system of which cables are connected through blocks with a counterweight and elements for raising the rod, cable traction and wire transfers for moving decorations (USSR AS No. 57384, class A63J 1 / 02, 1940).

When using this device in a scenic area, together with the decoration, it is necessary to move the bar and the counterweight, which requires additional energy costs, and noise is generated from the movement of the counterweight along the guides. Placing the scenery prepared for game events requires a space above the stage - a stage box, which limits the use of this device on stages that do not have stage boxes with additional light.

The closest analogue to the claimed object is a device for raising and lowering decorations (RU 2008967 CI F63J 1/02), containing a rod for fixing the upper edge of the decorations on it, a lower shaft for raising decorations, a cable block system, the cables of which are connected through the blocks with a counterweight and rod lifting elements, cable traction and wire drives for moving decorations, pocket for placing the rod and decorations in the folded position, the upper shaft having an elastic coating and installed in the vertical grooves of the supports, while the upper and lower shafts are located one above the other at the entrance to the pocket.

During the operation of this device, additional energy is expended, since when bringing the scenery into working condition, it is also necessary to move the bar and the counterweight together with the decoration. A very sophisticated technology for changing scenery, which requires lowering the entire heavy mechanism to the floor level, partial disassembly, and a complicated technique for removing one decoration and laying another together with a bar, which complicates the operational use of this mechanism in the process of preparing performances. The scenery is constantly in a folded (crumpled) state. And this is a very complex bulky design, which takes up a lot of space, both in height (first they weigh blocks, then two drums, and a voluminous pocket is located below), and in width (it requires a counterweight system). All this makes it difficult to use this device for raising and lowering the scenery, especially in "small" theaters, where there is no necessary height and width.

The objective of the utility model is to eliminate the bulkiness of the known device.

The technical result is to reduce energy consumption, simplify use, as well as expanding the functionality in the process of replacing the scenery in the "small" theaters.

The technical result of the utility model is achieved due to the fact that the known device for raising and lowering the decorations, containing a rod for fixing the upper edge of the decorations on it, a shaft for raising decorations, according to the change, cables are connected to the shaft, the ends of which are connected by a rod, and the shaft is made with drums with the possibility of winding a cable on them. At the same time, on the sections of the cables adjacent to the rod, lamellas are installed, with the possibility of winding them on the shaft with the formation of a cylindrical surface for winding decorations. The outer shaft has a recess for catching the rod. The shaft is mounted on a fixed axis mounted on a supporting structure, and a shaft rotation drive is mounted on an axis inside the shaft or on the supporting structure.

The outer shaft is equipped with drums for winding cables on them. At the same time, a special rigid (in the horizontal direction) apron in the form of flexible (in the vertical direction) lamellas is installed on the sections of the cables adjacent to the bar along its entire length, which protects the soft scenery from contact with the cables.

The optimal height of this apron:

where R is the outer radius of the drum;

d is the diameter of the rod.

The apron at some point wraps around the drum, closes the voids of the drums for winding cables and forms a smooth cylindrical surface, required for winding soft decorations. The rod is placed in a special recess provided on the surface of the shaft for its capture.

The hollow outer shaft, connecting sleeves, drums and a fixed axis together create a truss structure that provides the necessary (without deflection) bearing capacity of the shaft.

The essence of the utility model is illustrated by drawings, where:

- figure 1 shows a General view of the proposed device for raising and lowering the scenery;

- figure 2 shows a section of the proposed device for raising and lowering the scenery (section aa in figure 1).

A device for raising and lowering the decorations includes a rod 1, for fixing on it the upper edge of the decorations 2 and an outer shaft 6 for raising the decorations 2. The shaft 6 is made with drums 4 with the possibility of winding a cable 3 on them. Cables 3 are connected to the external shaft 6, one the ends of which are connected to the rod 1, and the other ends to the drums 4. In this case, the shaft 6 is mounted on a fixed axis 5, mounted on a supporting structure 7, and on the axis 5 is installed a drive shaft 8, transmitting rotation of the shaft 6 relative to axis 5.

The device is equipped with lamellas 9 through which the cable 3 passes. The lamellas 9 serve to pre-block the drum voids of the shaft 6 and hide the rod 1, while the lower lamella can serve as a bar to which the decorative paintings 2 are attached, while the lamellas 9 cover the shaft on the outer surface 6, creating a cylindrical flat surface for uniform winding of the decoration canvas 2.

Also, the device can be equipped with a recess for catching the headquarters 1 after winding the cables 3 and giving the outer shaft 6 a cylindrical shape (without protrusions and depressions).

The drive mechanism 8, for example a shaft, is mounted either on the axis 5 and rotates the outer shaft 6, or on the supporting structure 7 and serves to transmit rotational motion to the shaft 6 relative to axis 5.

A device for raising and lowering the scenery works as follows.

In the initial position, the rod 1 is pulled by a cable 3 to the outer shaft 6 and is kept inoperative by the drive system 8, which provides the necessary double degree from spontaneous unwinding.

To hang the decorations 2 lower the rod 1 to a convenient height (1-1.5 m) above the stage using the drive system 8. Having fixed the decoration 2 on the rod 1, it is moved vertically by winding the cable 3 on the drums 4 of the outer shaft 6. At the same time first, the cables are wound on the drums 4. Then, choosing the free length of the cables, lamellas 9 begin to be wound on the drum 4, forming a smooth cylindrical surface on the surface of the drum 4 and at the end of the winding, the rod 1 is fixed in the recess 10 and during further rotation on the drum 4 decoration 2 starts to wind up to the desired height, determined by the drive system 8, controlled by the DMX signal or manually from the control panel (not shown in the drawing). If it is necessary to lower the decoration 2, then, turning on the drive 8 in the opposite direction, the decoration 2 is lowered (unwound) to the desired level of height and at any controlled speed.

As drive 8, one-speed drives can be used, with step change of speed, or with smooth speed control, controlled by simple manual push-button remotes, or digital remotes with programmed control and precise positioning of the rod position in space.

During the stage action, the scenery 2 is moved in both directions due to the rotation of the outer shaft 6 in one or the other direction.

To change the scenery 2, rod 1 with the same decoration is lowered (rolled up) to the level of the stage tablet, then decoration 2 is removed from rod 1. The new decoration is attached to rod 1 and rises to the required height or wound on shaft 6 for temporary storage during the performance.

Such a shaft design of the device for raising and lowering the scenery is compact, mobile, convenient in operation and can be widely used in equipping theatrical stage spaces where high dynamics of changing the scenery are required, where there is no sufficient height and width of the stage.

Claims (4)

1. A device for raising and lowering the scenery, containing a rod for fixing the upper edge of the scenery on it, a shaft for raising the scenery, characterized in that the cable is connected to the shaft, the ends of which are connected to the bar, and the shaft is made with drums with the possibility of winding a cable on them . 2. The device according to claim 1, characterized in that on the sections of the cables adjacent to the rod, lamellas are installed with the possibility of winding them on the shaft with the formation of a cylindrical surface for winding decorations. 3. The device according to claim 1, characterized in that the outer shaft has a recess for catching the rod. 4. The device according to claim 1, characterized in that the shaft is hollow and mounted on a fixed axis mounted on a supporting structure, and a shaft rotation drive is installed on an axis inside the shaft or on the supporting structure.