JP2001054687A - Sound reflecting board drive mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound reflecting board drive mechanism capable of changing a track for moving a side face refleting board from its storage position to its service position and preventing a wire rope for suspending the side face reflecting board, from hanging slack. SOLUTION: This sound reflecting board drive mechanism 1 has a first wire rope 7 with one end provided at the upper part of a side face reflecting board P3 in the state of being wound on a first pulley 6 disposed in the stage wing direction position on a grapevine trellis 4 positioned below with a specified space from the ceiling T; a first elevating device 8 provided with the other end of the first wire rope 7; a second wire rope 10 with one end provided at the side face reflecting board P3 in the state of being wound on a second pulley 9 disposed closer to the stage center than the first pulley 6 on the grapevine trellis 4; and a second elevating device 11 provided with the other end of the second wire rope 10. Winding and delivery of the first and second wire ropes 7, 10 are thereby adjusted by the first and second elevating devices 8, 11 to change a track from the storage position to the service position of the side face reflecting board P3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acoustic reflector in which a track from a storage position of a side reflector to a use position can be changed, and a wire rope hanging the side reflector does not slack and hang down. It relates to a drive mechanism.

[0002]

2. Description of the Related Art Generally, acoustic reflectors in multipurpose halls are divided into ceiling reflectors, front reflectors, and side reflectors. The ceiling reflector and the front reflector are stored in a suspended state from above the stage, and when used, are lowered vertically by winding up a lifting wire rope and placed on the stage.
On the other hand, the side reflector cannot be stored or placed on the stage like the above-described ceiling reflector and front reflector for the following reasons. Hereinafter, “on the stage” means the entire stage space that can be seen by the audience, and above the stage floor is referred to as “on the stage floor”.

[0003] The stage equipment is provided in the front-back direction of the stage outside the width of a so-called hanging object used for stage performances suspended on a baton provided in the stage left-right direction (hereinafter referred to as a "left-right baton"). For example, a ladder baton that runs in the front and back direction of the stage with stage lighting, side batons hanging east and west curtains to separate the left and right sleeves of the stage and the stage, and hanging walls depicting the background Panoramic baton (these are collectively referred to as the "front-rear baton")
Therefore, it is necessary to provide the side reflector so as not to hinder the vertical baton from moving up and down.

[0004] For the reasons described above, conventionally, the side reflectors are stored and arranged, for example, in advance by storing the side reflectors on the stage floor of both sleeves of the stage and, when in use, running and moving on the stage floor. On the stage floor-mounted travel type, above each of the stage sleeves, outside the maximum width of the left and right baton, outside the stage sleeve direction,
In addition, there is a fixed set wire rope method that stores the side reflector in a suspended state outside the stage sleeve direction of the front and rear direction baton, and moves down the side reflector toward the center of the stage while drawing an arc when using it. is there.

The above-mentioned fixed set wire rope system is configured as shown in FIG. On a grid-like work floor (hereinafter referred to as a grape shelf) located at a predetermined distance below the ceiling, a set fitting 3 provided in the center direction of the stage is provided.
1 and a branch pulley 32 provided outside of the setting sleeve 31 in the stage sleeve direction and outside of the front-rear direction baton (not shown).

A fixed length setting wire rope 34 is provided between the setting bracket 31 and the upper end of the side reflector 33, and one end of the upper end of the side reflector 33 is not shown. The other end of the lifting wire rope 35 provided in the lifting device is provided. One end of the lifting wire rope 35 is provided in the lifting device, and the other is provided at the upper end of the side reflector 33 via the branch pulley 32.

In the fixed set wire rope system having such a configuration, as shown by a solid line in FIG.
Is in use, the load of the side reflector 33 is borne by the setting wire rope 34, and the lifting wire rope 35 is in a slack state as shown by the broken line in FIG.

In this state, in order to store the side reflector 33, the lifting wire rope 35 is wound up by the lifting device. At this time, the elevating wire rope 35 is wound up and pulled in the stage sleeve direction, and along with this, the side reflection plate 33 moves in the stage sleeve direction while rising, and in the storage position as shown by the two-dot chain line in FIG. , The load on the side reflector 33 is
It is borne by the lifting wire rope 35.

The setting wire rope 34 is
As shown by a two-dot chain line in FIG. At this time, the suspended object suspended in the front-rear direction baton is previously raised to the uppermost position, and the side reflector 33 is moved to the storage position below the raised suspended object.

In order to change from the retracted state to the use state, when the elevating wire rope 35 is sent out by the elevating device, the side reflector 33 moves toward the center of the stage by its own weight, and the length of the setting wire rope 34 is increased. , And this time, the side reflection plate 33 is suspended from the setting wire rope 34.

Then, the lifting wire rope 35 becomes slack as shown by the broken line in FIG. At this time, the suspended object suspended from the front and rear batons is previously raised to the uppermost position, and the side reflector 33 is disposed at a position in the center direction of the stage under the raised suspended object.

[0012]

However, in the above-mentioned fixed set wire rope system, the distance between the use position of the side reflector (the position where the setting metal fitting is provided) and the storage position (the position where the branch pulley is provided). Determines the length of the wire rope for setting, so if a long hanging object is suspended in the height direction on the front-rear baton, even if the front-rear baton is raised to the uppermost position, the side reflection plate However, there is a problem that the vehicle cannot pass under the suspended object.

As described above, in the fixed set wire rope system, the length of the set wire rope is determined by the interval between the use position and the storage position of the side reflector, and also determined by the hanging position. If the distance between the use position and the storage position is narrow and the hanging position is below, there is a problem that the wire rope for setting loosens and hangs down during storage and appears on the stage.

The present invention has been made to solve the above-mentioned problem, and according to the height of a suspended object suspended on a back and forth baton,
It is an object of the present invention to provide an acoustic reflector driving mechanism that can change a trajectory of movement of a side reflector from a storage position to a use position, and does not loosen and hang down a wire rope hanging the side reflector. .

[0015]

In order to achieve the above-mentioned object, the present invention provides one end of a first and a second wire rope at an upper end of a side reflector, and mounts the first wire rope on a grape shelf. A first wire pulley provided in the sleeve direction, a second wire rope is mounted on a second pulley provided on the grape shelf on the stage center side from the first pulley, and the other ends of the first and second wire ropes are respectively connected to the first pulley. And the second lifting device. In this case, the trajectory from the storage position of the side reflector to the use position can be changed by adjusting the winding or feeding of the first and second wire ropes by the first and second lifting devices.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An acoustic reflector driving mechanism according to the present invention comprises:
A left-right baton for hanging the ceiling reflector and the front reflector in the left-right direction of the stage, and a wire rope having one end provided in each left-right baton while being hung on a pulley provided on the ceiling, A lifting device provided with the other end of the wire rope, and further, in a state where the wire rope is hung on a first pulley arranged at a stage sleeve direction position on a grape shelf located below at a predetermined interval from the ceiling. A first wire rope having one end provided at the upper end of the side reflector, a first elevating device having the other end of the first wire rope provided, and disposed on a grape shelf toward the center of the stage rather than the first pulley. A second wire rope having one end provided on a side reflector in a state of being bridged over the second pulley provided, and a second elevating device having the other end of the second wire rope provided. .

According to the above construction, the ceiling reflection plate and the front reflection plate are respectively suspended from the left and right batons, and when retracted, the respective wire ropes are wound up by the corresponding lifting / lowering devices so as to be above the stage. When used, each wire rope is sent out by the corresponding lifting device and placed on the stage.

On the other hand, when the side reflector is moved between the storage position and the use position, the side reflector does not have to worry about the length of the suspended object suspended by the front and rear batons. At this time, the back and forth baton is lowered to the lowermost position in advance.

Then, the first wire rope and the second wire rope are wound by, for example, the first wire rope from the first wire rope and the second wire rope, respectively.
The horizontal movement in the stage sleeve (center) direction at the storage position and the use position by sending the wire rope to follow
For example, by sending out the first wire rope and sending it out following the second wire rope, the vertical descent at each of the storage position and the use position is performed, for example, the first wire rope is wound, and the second wire rope is made to follow. The side reflectors are moved up and down between the storage position and the use position by performing the vertical ascent at each of the storage position and the use position.

As described above, the acoustic reflecting plate driving mechanism of the present invention can change the trajectory of the movement in accordance with the height of the front and rear batons.
The wire rope and the first wire rope when in use are not hung.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an acoustic reflector driving mechanism according to the present invention will be described below with reference to FIGS. FIG. 1 shows a driving portion of a side reflector in the acoustic reflector driving mechanism of the present invention. FIG. 2 shows a driving portion of the ceiling reflector and the front reflector in the acoustic reflector driving mechanism of the present invention.

In FIGS. 1 and 2, reference numeral 1 denotes an acoustic reflector comprising a ceiling reflector P1, a front reflector P2, and a side reflector P3, which is located between a storage position above the stage and a use position on the stage floor. This is an acoustic reflector driving mechanism for moving between the two, and is configured as follows.

Reference numerals 2A and 2B denote left and right batons for suspending the ceiling reflector P1 and the front reflector P2 in the horizontal direction of the stage, respectively. In addition, about the baton which hung the ceiling reflection plate P1 and the front reflection plate P2,
Although described as A and 2B, the left and right batons of a stage on which many other suspended objects including these are suspended are hereinafter generically referred to as a left and right baton group 2.

Reference numeral 3 denotes a wire rope which is provided on a pulley R provided on the ceiling T and has one end provided to each of the left and right baton groups 2 while the other end of the wire rope 3 is not shown. Each is provided in the lifting device. Therefore,
The left-right baton group 2 uses a lifting device to move the wire rope 3 corresponding to each baton of the left-right baton group 2,
By winding, the corresponding baton moves to the storage position, and by sending it out, the corresponding baton moves to the use position.

The ceiling reflector P1 has its tip tilted in a direction parallel to the stage floor at the use position, so that the ceiling reflector P1 is
One end of the front suspension wire rope 3a is provided at a position in the distal direction opposite to the surface with respect to the stage floor. The other end of the front suspension wire rope 3a is attached to the ceiling reflector P1.

Reference numeral 4 denotes a grape shelf, which is a grid-like work floor located at a predetermined distance from the ceiling, and is used for adjusting work such as hanging objects and lighting for various stage effects on the grape shelf 4. In addition, on the grape shelf 4, the below-described components of the acoustic reflector driving mechanism 1 of the present invention are provided.

5 is for hanging a suspended object in the front-back direction of the stage,
This is a front-rear direction baton group provided at an outer position in the stage sleeve direction of the left-right direction baton group 2. The front-rear direction baton group 5 includes, for example, a ladder baton mounted on stage lighting and running in the front-rear direction of the stage, a side baton hanging an east-west curtain for separating the stage from left and right sleeves to the stage, a background, and the like. It has a panoramic baton and the like on which the painted wall is hung.

The front-rear direction baton group 5 is provided with one end of a wire rope 3 hung on a pulley R provided on a ceiling T for each baton. The other end of the wire rope 3 is provided on a lifting device (not shown). Therefore, the front-rear direction baton group 5 is also similar to the left-right direction baton group 2,
By winding the wire rope 3 corresponding to each of the batons 5 in the front-rear direction baton group by the elevating device, the corresponding baton moves to the storage position, and by sending it out, the corresponding baton moves to the use position.

Reference numeral 6 denotes a first position provided on the grape shelf 4 at a position outside the position of the front-rear direction baton group 5 in the stage sleeve direction.
The first pulley 6 causes the side reflector P3
Has been determined. Reference numeral 7 denotes a first wire rope which is provided on the first pulley 6 and has one end provided at an upper end of the side reflector P3. Reference numeral 8 denotes a first lifting device provided on the grape shelf 4 and provided with the other end of the first wire rope 7.

Reference numeral 9 denotes a second pulley arranged on the grape rack 4 at a position inside the stage center direction with respect to the front-rear direction baton group 5, and the second pulley 9 allows the second pulley 9 to be used at the position where the side reflector P3 is used. The position closest to the center of the stage has been determined. Therefore, the first pulley 6 and the second pulley 9 are located with the front-rear direction baton group 5 sandwiched in the center (sleeve) direction of the stage.

Numeral 10 denotes a state where it is hung on the second pulley 9,
This is a second wire rope whose one end is provided at the upper end of the side reflector P3. Reference numeral 11 denotes a second lifting device provided on the grape shelf 4 and provided with the other end of the second wire rope 10.

Next, the operation of the acoustic reflector driving device 1 having the above-described configuration will be described. Ceiling reflector P1 and front reflector P
When the left and right batons 2A and 2B are stored, the wire rope 3 is wound up by a lifting device (not shown) and is located above the stage. Now, in this state, the ceiling reflector P1 is in the upright state since the front suspension wire rope 3a has been removed.

On the other hand, the side reflector P3 is connected to the first lifting device 8
The first wire rope 7 is wound up by the second wire rope 10 and the second wire rope 10
Is sent out to such an extent that the second wire rope 10 does not loosen, so that it is located above the stage at an outer position in the stage sleeve direction.

To move the ceiling reflector P1, the front reflector P2, and the side reflector P3 from the storage position described above to the use position, the following operation is performed. Ceiling reflector P
1 is suspended in a wire rope 3 corresponding to the ceiling reflector P1 by a lifting device (not shown).
And place it at a predetermined height from the front of the stage.
Thereafter, the front hanging wire rope 3a is sent out by a winch (not shown) and attached to the front end of the ceiling reflector P1.
Then, the front suspension wire rope 3a is lifted, and the ceiling reflector P1 is tilted at a predetermined angle, whereby the ceiling reflector P1 is tilted.
Is placed on the stage.

On the other hand, in order to move the side reflector P2 from the storage position to the use position, first, the front-rear direction baton group 5 is lowered to the lowermost position in advance. Thereafter, if the height of the front-rear direction baton group 5 is higher than the lower end of the current side reflector P2 at the storage position, the following operation is performed.

While the first wire rope 7 is wound by the first lifting device 8, the second wire rope 10 is sent out by the second lifting device 11 in accordance with the amount of the first wire rope to be sent out. Is raised vertically so that the lower end of the side reflector P2 is higher than the height of the side reflector P2 at the storage position.

The height of the front-rear direction baton group 5 lowered to the lowermost position is the same as the current side reflector P at the storage position.
If it is located higher than the lower end of 2, after the above operation,
Alternatively, when the height of the front-rear direction baton group 5 lowered to the lowermost position is lower than the lower end of the current side reflector P2 at the storage position, the following operation is continuously performed.

While the second wire rope 10 is wound by the second lifting device 11, the second wire rope 10
The first wire rope 7 is sent out while being adjusted by the first lifting / lowering device 8 in accordance with the winding amount, and the side reflector P <b> 2 is moved toward the center of the stage over the front-rear direction baton group 5.

Subsequently, while the second wire rope 10 is sent out this time by the second elevating device 11, the first wire rope 7 is adjusted by the first elevating device 8 in accordance with the amount of the second wire rope 10 to be sent out. Then, the side reflector P2 is vertically lowered and placed on the stage floor.

After that, the horizontal baton 2B with the front reflector P2 suspended is sent out by a lifting device (not shown) to send out the wire rope 3 corresponding to the front reflector P2, and is arranged on the stage floor.

Then, the ceiling reflector P1, the front reflector P
2. The following operation is performed to move the side reflector P3 from the use position to the storage position. The front reflector P2 is stored above the stage by winding up a wire rope 3 corresponding to the left-right baton 2B suspending the front reflector P2 by a lifting device (not shown).

The side reflector P3 takes up the second wire rope 10 by the second lifting device 11, and adjusts the first wire rope 7 by the first lifting device 8 according to the unwinding amount of the second wire rope 10. The side reflector P2 is raised above the use position and lowered to the lowermost position, so that the height of the front-rear direction baton group 5 is lower than the height of the side reflector P2.
2 so that the lower end becomes higher.

Thereafter, while the first wire rope 7 is wound by the first elevating device 8, the second wire rope 10 is fed out while being adjusted by the second elevating device 11 according to the winding amount of the first wire rope 7. And the side reflector P
2 is now moved to the storage position in the stage sleeve direction.

If necessary, the side reflector P2 which has just been moved to the storage position may be further raised and stored. At this time, the first lifting device 8
While winding the wire rope 7, the first wire rope 7 is sent out while adjusting the second wire rope 10 by the second lifting / lowering device 11 according to the winding amount.

Further, the ceiling reflector P1 is unwound by unwinding the front hanging wire rope 3a by a winch (not shown), the surface of the ceiling reflector P1 is erected, then removed, and the ceiling reflector P1 is lifted by an elevator (not shown). By winding up the wire rope 3 corresponding to the left-right baton 2 </ b> A on which the hang is suspended, it is stored above the stage.

As described above, the acoustic reflector driving mechanism 1 is configured to take up or send out the first wire rope 7 by the first elevating device 8 and take up or send out the second wire rope 10 by the second elevating device 11. In cooperation with each other, it is possible to move only the horizontal direction between the storage position and the use position of the side reflector P2, and to move only the vertical direction at each of the storage position and the use position of the side reflector P2. Therefore, the trajectory of the movement of the side reflection plate P2 can be appropriately changed according to the height position of the suspended object suspended from the front-rear direction baton group 5.

The acoustic reflector driving mechanism 1 is configured such that the first wire rope 10 and the second wire rope 10 are separately wound or fed by the first lifting device 8 and the second lifting device 11, respectively. When the side reflector P2 moves only in the horizontal direction between the storage position and the use position, one of the first wire rope 10 and the second wire rope 10 does not loosen and appear on the stage.

[0048]

As described above, the acoustic reflector driving mechanism of the present invention comprises the first pulley and the second pulley over the side reflector and the first lifting device, and the side reflector and the second lifting device, respectively.
Since the first wire rope and the second wire rope are provided on the pulley, the side reflector is moved horizontally in the left and right direction of the stage sleeve between the storage position and the use position, and each of the storage position and the use position. Vertical movement is possible, so that it can be adjusted appropriately according to the height of the front-rear direction baton.Furthermore, the suspended object suspended from the front-rear direction baton does not become an obstacle, and furthermore, the storage position and use During horizontal horizontal movement in the stage sleeve direction over the position, the first wire rope and the second wire rope do not loosen and appear on the stage.

[Brief description of the drawings]

FIG. 1 is a diagram showing a driving unit of a side reflector in an acoustic reflector driving mechanism of the present invention.

FIG. 2 is a diagram showing a drive unit for a ceiling reflector and a front reflector in the acoustic reflector drive mechanism of the present invention.

FIG. 3 is a diagram showing a driving unit of a side reflector in a conventional mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Acoustic reflector driving mechanism 2 Horizontal baton group 2A Horizontal baton (hanging ceiling reflector) 2B Horizontal baton (hanging front reflector) 3 Wire (for raising and lowering baton group) Rope 4 grape shelf 5 front and rear baton group 6 first pulley 7 first wire rope 8 first lifting device 9 second pulley 10 second wire rope 11 second lifting device P1 ceiling reflector P2 front reflector P3 side reflector

Claims (1)

[Claims] 1. An acoustic reflector driving mechanism for driving an acoustic reflector comprising a ceiling reflector, a front reflector, and a side reflector from a storage position above a stage to a use position on a stage. A left and right baton for hanging the reflector in the left and right direction of the stage, a wire rope with one end provided on each of the left and right batons while being hung on a pulley provided on the ceiling, A lifting device provided with an end, and further comprising an upper end of the side reflector in a state of being hung on a first pulley arranged at a stage sleeve direction position on a grape shelf located at a predetermined distance from the ceiling and below. A first wire rope having one end thereof,
A first elevating device provided with the other end of the first wire rope, and a side reflector mounted on a second pulley disposed on the grape rack in a stage center direction from the first pulley with respect to the stage. A second wire rope provided with one end;
An acoustic reflector driving mechanism, comprising: a second lifting device provided with the other end of the wire rope.