JPH1176635A - Hanging object lifting device for stage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select electric and manual lifting and to improve efficiency by providing the device with flexible cord-like bodies and pulling cords which are put on upper main pulleys and lower main pulleys, plural batons, pulleys, wires, counter weights, attachable and detachable moving lifting means and locking means. SOLUTION: In the case of the electric lifting, the batons 10 are positioned and fixed to a prescribed height and sprocket wheels 26 are detached from chains 15a by activating motors for advance and retreat of meshing control blocks 38, by which the movement of lifting units 20 is made possible and the utilization of the lifting units to the lifting of another batons 10 is made possible. On the other hand, in the case of manually lifting the batons 10, the rods of the electric cylinders 32 of the lock units 30 in the parts of the batons 10 are extended to release oscillation pawls 31 from the meshing of the chains 15a and a skilled operator operates the pull cords 17 for manual operation, by which the lifting of the batons 10 is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for raising and lowering a hanging object such as a prop or various curtains on the background of a stage.

[0002]

2. Description of the Related Art On a stage that can be used for a variety of purposes from classical kabuki to modern live concerts, a lifting baton that raises and lowers suspended objects such as background props and various curtains is often used. .

[0003] By the way, when performing Kabuki etc.,
It is necessary to be able to raise and lower the baton manually for reasons such as producing a subtle movement of the suspended object.
On the other hand, in public halls in recent years, it is very difficult to always have a technician who manually raises and lowers the baton at all times. There is a need for a motorized lifting / lowering device that can easily raise and lower the baton as it is.

[0004] Therefore, a lifting device with a clutch that can switch between manual and electric is provided for each baton,
They can be used properly according to the performances on the stage.

[0005]

However, if each of the batons is provided with a lifting device with a clutch capable of switching between manual operation and electric operation as described above, not only the equipment cost is increased but also the cost is increased. The number of operating drive mechanisms increased, and the drive mechanisms could not be used effectively.

In view of the above, the present invention provides a suspended lifting device capable of switching between a motorized lifting and a manual lifting and lowering according to the stage performance and the like, and which can operate the driving mechanism efficiently. It was aimed at.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a plurality of stage lifting / lowering devices according to the present invention are provided in the front-rear direction of the stage, and batons to which hanging objects are attached are provided. A plurality of wires for suspending the baton via a plurality of pulleys arranged in a transverse direction of the stage above each of the stages, and a flexible bridging over an upper main pulley and a lower main pulley provided on one side of the stage A leash, a counterweight connected to the flexible leash and the wire, a towline for reciprocatingly driving the upper main pulley, and a leash of the stage so as to be able to move along the longitudinal direction of the stage. Lifting / lowering means arranged on one side for detachably engaging with the flexible rope and moving the flexible rope; and detachably engaging with the flexible rope. Locking means for restraining the movement of the flexible rope. Characterized in that the Ete made.

[0008] In the above-described apparatus for lifting a suspended object on a stage, the lifting means is provided on one side of the stage along a moving rail laid along a front-rear direction of the stage, and a rack laid along the rail. A truck that can travel along the rail, a pinion that is disposed on the truck and meshes with the rack, a movement motor that rotationally drives the pinion, and a crossing direction of the stage on the truck along the transverse direction of the stage. A reciprocating rail, a reciprocating platform movable along the reciprocating rail, and a rotatable mount disposed on the bogie so as to be oriented in the longitudinal direction of the rail, and screwed to the reciprocating platform. Ball screw, an advancing / retreating motor for rotating and driving the ball screw, and a flexible rope moving means for detachably engaging the flexible rope and moving the flexible rope. Features To.

[0009] In the above-mentioned hoisting / lifting device for a stage, the pulling line is stretched between the pulley around the same axis as the lower main pulley and the upper main pulley.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a stage lifting device according to the present invention will be described with reference to FIG. In addition, FIG.
It is a partially cutaway perspective view showing the schematic structure.

In FIG. 1, reference numeral 10 denotes a baton, and a plurality of batons are provided in the front-rear direction of the stage 1 so that various hanging objects corresponding to the performances can be hung. Reference numeral 11 denotes a pulley, and a plurality of pulleys are arranged in a transverse direction of the stage 1 on a stage 2 above the stage 1. Reference numeral 12 denotes a wire, and the pulley 11
Each of the batons 10 is suspended via the above. Reference numeral 13 denotes an upper main pulley, which is provided on the beam 3 at substantially the same height as the pulley 11 on one side of the stage 1. A lower main pulley 14 is provided below the upper main pulley 13. 1
Reference numeral 5 denotes a flexible rope, and the upper main pulley 13 and the lower main pulley 1
4 and a wire 15b which constitutes a chain 15a provided at a portion of the baton 10 extending over the length of the vertical stroke and other portions. A counterweight 16 is connected to the wire 12 and the flexible rope 15. 17 is a manual pull cord,
Pulley 1 that rotates about the same axis as the lower main pulley 14
4a and the upper main pulley 13, so that the upper main pulley 13 can be driven to reciprocate.

The counterweight 16 is balanced with the baton 10 in a state where there is no hanging object, and can be moved up and down along a guide rail (not shown). A detachable spare weight can be appropriately added.

The tow rope 17 can be used at any time when the baton 10 is raised or lowered to any height at the time of manual operation, for example, when the suspended object is moved in a delicate background. Used for In addition, counter weight 1
In the case where an operator close to an amateur who cannot perform weight adjustment (replacement) of 6 is operated, the following electrically driven lifting unit 20 is used.

In FIG. 1, an elevating unit 20, which is an elevating means, is disposed near a chain 15a of a flexible rope 15 so as to be movable in the front-back direction of the stage 1, and is detachably attached to the chain 15a. Engaged with the flexible rope 1
5 can be moved, and has the following configuration.

Reference numeral 21 denotes a moving rail, which is laid in the lower pit 1a on one side of the stage 1 along the front-back direction of the stage 1. Reference numeral 22 denotes a rack, and the pit 1a
It is laid along the rail 21 inside. Reference numeral 23 denotes a cart, which is provided on the moving rail 21 so as to be able to travel along the rail 21. Reference numeral 24 denotes a pinion, which is provided below the carriage 23 and is engaged with the rack 22. 25
Reference numeral denotes a movement motor with a brake, which is mounted on a bogie 23 so that the pinion 24 can be driven to rotate. Reference numeral 26 denotes a sprocket wheel, which is disposed above the carriage 23, and can mesh with the chain 15a of the flexible rope 15. Numeral 27 denotes a forward / reverse rotatable elevating motor.
The sprocket wheel 26 is provided so as to be rotatable. Reference numeral 28 denotes an engagement control block which is capable of sliding the sprocket wheel 26 and the elevating motor 27 so as to engage the sprocket wheel 26 with the chain 15a and to separate the sprocket wheel 26 from the chain 15a. Specifically, it is configured as follows.

Reference numeral 28a denotes an advancing / retreating rail, which is provided on the carriage 23 along the transverse direction of the stage 1. Reference numeral 28b denotes an advance / retreat table, which is slidably provided on the advance / retreat rail 28a and supports the sprocket wheel 26, the elevating motor 27 and the like. Reference numeral 28c denotes a ball screw, which is rotatably disposed on the carriage 23 so as to be oriented in the longitudinal direction of the advance / retreat rail 28a, and is screwed to the lower surface of the elevating platform 28a. Further, an advancing / retreating motor (not shown) for driving the ball screw 28c to rotate forward and reverse is connected to the shaft end of the ball screw 28c. In the present embodiment, the sprocket wheel 2
6. The flexible rope moving means is constituted by the elevating motor 27 and the like.

In FIG. 1, reference numeral 30 denotes a lock unit serving as a lock means, which removably engages with the chain 15a of the flexible rope 15 to restrict the movement of the flexible rope 15. And has the following configuration.

Reference numeral 31 denotes an oscillating claw, which is a flexible rope 15
, The base end is rotatably supported, and the tip end can be engaged with the chain 15a. Reference numeral 32 denotes an electric cylinder, the distal end of which is connected to the base end of the swinging pawl 31, and the rod is extended to release the leading end of the swinging pawl 31 from being caught by the chain 15a. By contracting (spring operation), the tip of the swinging pawl 31 can be bitten into the chain 15a.

The lock unit 30, whether electric or manual, holds the position of the baton 10 by engaging the swinging pawl 31 with the chain 15a after the raising and lowering operation of the baton 10. By releasing the engagement of the pawl 31 with the chain 15a, the baton 10 can be moved up and down. By holding the position of the baton 10 with the lock unit 30, the lifting unit 20 can be moved to raise and lower another baton 10. The lock unit 20 is
Conversely, it may be provided on a carriage 23 on which the elevating unit 20 is arranged, so that the number of lock units 30 can be reduced.

In such a stage lifting device,
When a heavy suspended object is suspended from the baton 10 or operated by an unskilled operator who cannot perform manual operation, the moving motor 25 of the elevating unit 20 is operated to move the carriage 23 to the flexible rope of the baton 10 portion. Chain 15a of the object 15
The engagement control block 28 is moved to the position
Of the sprocket wheel 2
6 is engaged with the chain 15a, the rod of the electric cylinder 32 of the lock unit 30 is extended to release the swinging pawl 31 from the engagement of the chain 15a.
The baton 10 can be raised and lowered by operating the lifting motor 27 to rotate the sprocket wheel 26.

When the baton 10 is raised and lowered to a predetermined height position, the rod of the electric cylinder 32 of the lock unit 30 is contracted to cause the swinging pawl 31 to bite into the chain 15a. The sprocket wheel 26 is separated from the chain 15a by operating the advance / retreat motor of the meshing control block 28, so that the elevating unit 20 can be moved. Can be used for raising and lowering the baton 10.

On the other hand, when raising and lowering the baton 10 manually, the rod of the electric cylinder 32 of the lock unit 30 in the part of the baton 10 is extended to release the swinging pawl 31 from the biting of the chain 15a, and The technician can move the baton 10 up and down by operating the pull cord 17 for manual operation. After the operation is completed, the rod of the electric cylinder 32 of the lock unit 30 is contracted to swing the pawl 3.
The baton 10 can be fixed by biting 1 into the chain 15a.

That is, the baton 1 that needs to be operated simultaneously
By arranging the elevating units 20 by the number of zeros, the operating rate of the drive mechanism for elevating and lowering the baton 10 can be increased.

Therefore, according to such a stage lifting device, it is possible to switch between the motorized lifting and the manual lifting and lowering according to the stage performance and the like, and to operate the drive mechanism efficiently.

The rack 23 and the pinion 24 allow the carriage 23 to be moved without causing slip, so that the chain 15a of the flexible rope 15 can be moved.
The position of the carriage 23 can be accurately controlled by remote control, and the sprocket wheel 26 can be reliably pressed against the chain 15a of the flexible rope 15 by the check action of the ball screw 28c.

[0026]

According to the present invention, there is provided an apparatus for lifting and lowering a suspended object on a stage.
A plurality of batons arranged in the front-rear direction of the stage, to which hanging objects are attached, a plurality of wires for suspending the baton via pulleys arranged in a plurality of transverse directions of the stage above each of the batons, and one of the stages A flexible rope extending over an upper main pulley and a lower main pulley provided on the side of the vehicle; a counterweight connected to the flexible rope and the wire; and a reciprocating rotation of the upper main pulley. A pull cord to drive,
Lifting / lowering means disposed on one side of the stage so as to be movable along the front-back direction of the stage, and detachably engaging with the flexible rope to move the flexible rope; Lock means for removably engaging the flexible rope and restraining the movement of the flexible rope, so that when the baton needs to be manually raised and lowered, the lock is required. The baton can be lifted and lowered as desired by the operator by unlocking the means and manually operating the tow line, and the baton can be held by locking with the locking means. When an unskilled operator uses it, the lifting / lowering means is moved to the baton position and engaged with the flexible rope, and then the locking means is unlocked and then the flexible rope is moved. By doing so, the baton Dynamically raising and lowering operation, it is possible to hold the baton by locking with the lock means. As a result, a plurality of batons can be electrically lifted and lowered by a single lifting means, so that switching between motorized lifting and manual lifting can be switched according to the stage performance and the like, and the drive mechanism can be operated efficiently. be able to.

[0027] Further, the lifting means moves on one side of the stage along a front-rear direction of the stage, a moving rail laid along the rail, and runs along the rail. A movable cart, a pinion disposed on the cart, meshing with the rack, a moving motor for rotating the pinion, and a reciprocating rail provided on the cart along a transverse direction of the stage. An advance / retreat table movable along the advance / retreat rail, a ball screw rotatably disposed on the carriage so as to face an axis in a longitudinal direction of the rail, and screwed to the advance / retreat table; And a flexible net moving means for detachably engaging with the flexible net and moving the flexible net, thereby moving the rack and the pinion. By pedestal Can be moved without slipping, accurate position control can be performed remotely, and the flexible rope moving means can be securely engaged with the flexible rope by the check action of the ball screw. Can be done.

Further, since the tow rope is stretched between the pulley around the same axis as that of the lower main pulley and the upper main pulley, even if the baton is not moved up and down electrically, the pulling line can be pulled. You can use the leash at any time.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view illustrating a schematic configuration of an embodiment of a stage lifting device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stage 1a Lower pit 2 Slender 3 Beam 10 Baton 11 Pulley 12 Wire 13 Upper main pulley 14 Lower main pulley 14a Pulley 15 Flexible rope 15a Chain 15b Wire 16 Counterweight 17 Pulling rope 20 Lifting unit 21 Moving rail 22 Rack Reference Signs List 23 cart 24 pinion 25 moving motor 26 sprocket wheel 27 elevating motor 28 meshing control block 28a advance / retreat rail 28b advance / retreat table 28c ball screw 30 lock unit 31 rocking claw 32 electric cylinder

Claims (3)

[Claims] 1. A plurality of batons arranged in the front-rear direction of a stage to which a hanging object is attached, and a plurality of wires suspending the baton via pulleys arranged in a plurality of transverse directions of the stage above each of the batons. An upper main pulley and a lower main pulley provided on one side of the stage, a flexible rope, and a counterweight connected to the flexible rope and the wire; A pull cord for reciprocatingly driving the main pulley; and a pull cord disposed on one side of the stage so as to be movable in the front-rear direction of the stage, and detachably engaged with the flexible rope. A stage comprising: elevating means for moving a flexible rope; and locking means for removably engaging the flexible rope and restraining the movement of the flexible rope. Lifting equipment. 2. A moving rail laid on one side of the stage along the front-rear direction of the stage, a rack laid along the rail, and running along the rail. A movable trolley, a pinion disposed on the trolley and meshing with the rack, a movement motor for rotating and driving the pinion, and an advance / retreat rail provided on the trolley along a transverse direction of the stage. An advance / retreat table movable along the advance / retreat rail, a ball screw rotatably disposed on the carriage so as to face an axis in a longitudinal direction of the rail, and screwed to the advance / retreat table; and the ball screw. A reciprocating motor for rotating and driving the flexible rope, and a flexible rope moving means for detachably engaging with the flexible rope and moving the flexible rope. The stage described in Item 1 Lifting device. 3. The stage according to claim 1, wherein the pulling rope is stretched between a pulley around the same axis as that of the lower main pulley and the upper main pulley. Lifting equipment.