Lifting device

Abstract

To provide a lifting device capable of stably raising and lowering suspended objects. [Solution] The lifting device includes a rotating drum which includes a drum body that extends in a first direction and winds a wire through a first groove provided in a spiral shape, and a moving assist part which is connected to the drum body and assists the movement of the drum body in the first direction through a second groove provided in a spiral shape, and a lifting part which can be raised and lowered using the wire by the rotating drum, wherein in the first direction, the pitch of the first groove of the drum body and the pitch of the second groove of the moving assist part are the same.

Description

Technical Field

[0001] The present invention relates to a lifting device, more specifically, a lifting device for lifting a suspended object used in an entertainment facility.

Background Art

[0002] Conventionally, it is known to lift a suspended object (for example, lighting equipment) used on a stage by winding or unwinding a wire with a rotating drum installed on the ceiling. Patent Document 1 discloses the configuration of a stage suspended object lifting device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] On the other hand, in order to stably lift a suspended object, as a standard when suspending a wire (wire rope) with a lifting device such as a crane, it is said that the wrap angle formed by the grooved drum and the wire rope must be within 4 degrees (Non-Patent Document 1).

[0006] Therefore, one of the objectives of the present invention is to reduce the fleet angle formed by the rotating drum and the wire rope. Another objective of the present invention is to provide a lifting device for entertainment facilities that can stably raise and lower suspended objects. [Means for solving the problem]

[0007] According to one embodiment of the present invention, a lifting device is provided that includes a rotating drum having a drum body extending in a first direction and winding a wire through a first groove provided in a spiral shape, and a moving assisting part connected to the drum body and assisting the movement of the drum body in the first direction through a second groove provided in a spiral shape, and a lifting part that can be raised and lowered using the wire by the rotating drum, wherein in the first direction, the pitch of the first groove of the drum body and the pitch of the second groove of the moving assisting part are the same.

[0008] In the above-described lifting device, the movement assisting part may be a lead screw.

[0009] In the above-described lifting device, a pulley is provided on the upper side of the drum body and supplies the wire from the drum body to the lifting section, and the angle between the perpendicular line connecting the pulley to the drum body and the wire extending from the drum body toward the pulley may be approximately 0 degrees.

[0010] In the above-described lifting device, an adjustment unit may be provided between the drum body and the movement assist unit so as to allow separation of the drum body and the movement assist unit, and which is capable of adjusting the rotational phase of the drum body. [Effects of the Invention]

[0011] According to one embodiment of the present invention, the fleet angle between the rotating drum and the wire rope can be reduced. Furthermore, according to one embodiment of the present invention, a lifting device capable of stably raising and lowering suspended objects can be provided. [Brief explanation of the drawing]

[0012] [Figure 1] It is a schematic top view of a suspended object lifting system for an entertainment facility according to an embodiment of the present invention. [Figure 2] It is a schematic side view of a lifting device according to an embodiment of the present invention. [Figure 3] It is a schematic front view of a lifting device according to an embodiment of the present invention. [Figure 4] It is a schematic front view of a lifting part of a lifting device according to an embodiment of the present invention. [Figure 5] It is a schematic top view of a main body of a lifting part of a lifting device according to an embodiment of the present invention. [Figure 6] It is a schematic front view of a lifting part of a lifting device according to an embodiment of the present invention. [Figure 7] It is a schematic front view when the lifting part of a lifting device according to an embodiment of the present invention descends. [Figure 8] It is a schematic front view of a driving part of a lifting device according to an embodiment of the present invention. [Figure 9] It is a schematic front view of a rotating drum according to an embodiment of the present invention. [Figure 10] It is a schematic top view of a rotating drum according to an embodiment of the present invention. [Figure 11] It is an enlarged view of a schematic top view of a rotating drum according to an embodiment of the present invention. [Figure 12] It is a schematic top view when a rotating drum of a lifting device according to an embodiment of the present invention winds a wire. [Figure 13] It is a schematic top view when a rotating drum of a lifting device according to an embodiment of the present invention winds a wire. [Figure 14] It is a schematic front view when the lifting part of a lifting device according to an embodiment of the present invention descends. [Figure 15] It is a schematic side view of a suspended object lifting system for an entertainment facility according to an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0013] Hereinafter, referring to the drawings, an object hoisting and lowering system for an entertainment facility and an object hoisting and lowering device for an entertainment facility according to an embodiment of the present invention will be described. However, the object hoisting and lowering system for an entertainment facility of the present invention can be implemented in many different ways and is not to be construed as limited to the description of the examples shown below. In the drawings referred to in this embodiment, the same parts or parts having the same function are denoted by the same reference numerals, and the repeated description thereof will be omitted.

[0014] Also, for the sake of convenience of explanation, terms indicating directions such as upward (upper side), downward (lower side), forward (front side), rearward (rear side), rightward (right side), and leftward (left side) are used. However, the direction in which gravity acts is downward B, and the opposite is upward U. Further, the entrance side (front direction) of the entertainment facility in which the object hoisting and lowering system for an entertainment facility of the present invention is provided is forward F, and the opposite back side (depth direction) is rearward D. Furthermore, when viewed from the front (entrance) side, the right side is rightward R, and the left side is leftward R. Also, in this specification, leftward and rightward are combined into the left-right direction (also referred to as the "first direction"), upward and downward are combined into the up-down direction (also referred to as the "second direction"), and forward and backward are combined into the front-back direction (also referred to as the "third direction"). The left-right direction and the front-back direction are parallel to the floor surface ("ground" also) of the entertainment facility.

[0015] Also, in this specification, an "entertainment facility" includes a studio facility and a stage facility that provide entertainment. Studio facilities include movie studios, television recording studios, and music studios as places for video production, audio recording, photo shooting, etc. Stage facilities include theaters, concert halls, and opera houses as places for live performances such as plays, concerts, musicals, operas, and ballets.

[0016] (1. Configuration of the Object Hoisting and Lowering System for an Entertainment Facility) The configuration of an object hoisting and lowering system 1 for an entertainment facility according to an embodiment of the present invention will be described.

[0017] Figure 1 is a schematic top view of an entertainment facility suspension lifting system 1 according to one embodiment of the present invention. As shown in Figure 1, the entertainment facility suspension lifting system 1 includes an entertainment facility suspension lifting device (hereinafter referred to as the "lifting device") 10, a ceiling passageway (also referred to as the "catwalk") 20, an opening 30, and a rail 40. The lifting device 10, the ceiling passageway 20, the opening 30, and the rail 40 are installed in the ceiling area of ​​the entertainment facility 5.

[0018] The lifting device 10 has the function of raising and lowering suspended objects for entertainment facilities by raising and lowering a part of it (the lifting section 100 shown in Figure 2 and later). In one embodiment of the present invention, stage equipment and lighting equipment for illuminating performers installed in the entertainment facility 5 are used as suspended objects for entertainment facilities.

[0019] The ceiling passageways 20 are arranged in a grid pattern. The openings 30 are provided between adjacent ceiling passageways 20. In this example, 20 openings 30 are provided in a 4x5 grid, but the number of openings 30 can be changed as appropriate. The lifting section 100 of the lifting device 10 moves up and down through the openings 30.

[0020] The rail 40 is provided along the front-to-back direction. In one embodiment of the present invention, the lifting device 10 can move in the front-to-back direction (forward F or backward D) of the entertainment facility 5 via the rail 40. One lifting device 10 is provided for one opening 30, but by moving the lifting device 10 via the rail 40, two lifting devices 10 may be provided for one opening 30 to match the size of the opening 30 (for example, lifting device 10-21 may be moved so that lifting devices 10-11 and 10-21 are provided for opening 30-1), or three lifting devices 10 may be provided.

[0021] Furthermore, as shown in Figure 1, in one embodiment of the present invention, the lifting devices 10 are arranged side by side in the left-right direction. In this example, lifting devices 10-11, 10-12, 10-13, 10-14, and 10-15 are arranged in a straight line. Each of the lifting devices 10-11, 10-12, 10-13, 10-14, and 10-15 moves up and down through different openings 30. As a result, although each lifting device 10 is provided independently, it can be considered as one large lifting device 10 extending in the left-right direction, and uniform lighting can be achieved.

[0022] (1-1. Configuration of the lifting device) Next, the details of the lifting device 10 will be explained using drawings. Figure 2 is a schematic side view of the lifting device 10 with the batten 120 raised to its highest position. Figure 3 is a schematic front view of the lifting device 10 with the batten 120 raised to its highest position.

[0023] As shown in Figures 2 and 3, the lifting device 10 includes a lifting section 100, a drive section 200, a wire 300, a trolley section 400, a power trolley section 500, an operating section 600, a lifting device support frame 700, and a buffer section 800. The lifting section 100 and the drive section 200 are arranged side by side along the front-rear direction (third direction). When the baton 120 is raised to its highest position, the lower end of the lifting section 100 (in this example, the lower end 120a of the baton 120, which will be described later) and the lower end of the drive section 200 are higher than the upper end 21a of the fall protection section (handrail 21) provided in the ceiling passageway 20. This allows for effective use of the ceiling space, enabling the lifting device 10 to move in the front-rear direction without interfering with the handrail 21 and avoiding the effects of the ceiling height restriction. In addition, the upper part of the lifting device 10 is set at a height that can be reached by hand. This allows for safe maintenance of the lifting device 10.

[0024] In one embodiment of the present invention, one end of the wire 300 is connected to a drive unit 200 (rotating drum 210). The other end of the wire 300 is connected to a lifting unit 100 (baton support frame 111 of the lifting unit body 110). Multiple pulleys 350 are arranged in the wire 300 supply path from the drive unit (rotating drum 210) to the lifting unit 100 (lifting unit body 110) so that a constant tension is applied to the wire 300. The operation of the drive unit 200 (winding or unwinding the wire 300) changes the amount (length) of wire 300 supplied from the drive unit 200 to the lifting unit 100. As a result, the lifting unit 100 can move upward U or downward B (forward and backward direction) by the drive of the drive unit 200. The configuration of each part of the lifting device 10 will be described in detail below.

[0025] (1-1-1. Lifting section 100) Figure 4 is a schematic front view of the lifting section 100. The lifting section 100 includes the lifting section body 110, a batten 120, a batten bracket 130, and an extendable section 140.

[0026] Figure 5 is a schematic top view of the lifting unit body 110. As shown in Figure 5, the lifting unit body 110 has a baton support frame 111 and a frame portion 113. The baton support frame 111 is extended in the left-right direction so that the telescopic portion 140 can be placed on it. The frame portion 113 is provided in a U-shape on both sides of the baton support frame 111 when viewed from above. The lifting unit body 110 (baton support frame 111) is connected to four wires 300 via wire connection portions 115 provided on the upper side of the frame portion 113. The wire connection portions 115 are provided on the left front, left rear, right front, and right rear of the lifting unit body 110. In addition, a power supply mechanism or other parts and components may be provided on the side of the lifting unit body 110.

[0027] Let's return to Figure 4 for explanation. The batten 120 extends in the left-right direction. The batten 120 is made of a metal material (an aluminum frame in this example). The lighting fixture 90 is fixed to one part of the batten 120 via a fastener 91.

[0028] The baton bracket 130 has the function of supporting the baton 120. In one embodiment of the present invention, the baton bracket 130 includes a central baton bracket 130-1 provided at the lower center of the lifting unit body 110, a left baton bracket 130-2 provided at the lower left side of the lifting unit body 110, and a right baton bracket 130-3 provided at the lower right side of the lifting unit body 110. When it is not necessary to describe these baton brackets separately, they will be described as the baton bracket 130. The lower end 130a of the baton bracket 130 is connected to the baton 120. The upper end 130b of the baton bracket 130 is connected to the baton support frame 111.

[0029] The telescopic section 140 has the function of extending and retracting according to the amount (length) of the wire 300 hanging down. Figure 6 is a schematic front view of the lifting section 100, with the frame section 113 of the lifting section body 110 transparent to make the telescopic section 140 easier to see. The lower end 140a of the telescopic section 140 is connected to the baton support frame 111 of the lifting section body 110. The upper end 140b of the telescopic section 140 is slidably connected to a rail 150 that is fixed to the upper part of the ceiling area and extends in the left-right direction.

[0030] The telescopic section 140 is constructed by connecting linear frames (also called "subframes 141") having a predetermined length. The uppermost subframe 141 is shorter than the other subframes 141, but may have the same length. In one embodiment of the present invention, hinge sections 143 are provided between one subframe and an adjacent subframe. In this example, three hinge sections 143 are provided in a linear arrangement on the left side and four on the right side. In this embodiment, by passing the power cable and control cable through the telescopic section 140 (subframes 141), the power cable and control cable can be guided to connect to the lighting fixture suspended from the batten 120, and entanglement and disconnection of the power cable and control cable can be prevented.

[0031] Figure 7 is a schematic front view of the lifting device 10 when the lifting section 100 is lowered. In one embodiment of the present invention, as the amount of sag of the wire 300 relative to the lifting section 100 (length of the wire 300) increases, the hinge section 143 gradually opens. When one hinge section 143 opens, the opposite ends of the two subframes 141 corresponding to this hinge section 143 move apart (the distance d141 between the opposite ends of the two subframes 141 increases). As a result, the telescopic section 140 can be extended as the hinge section 143 gradually opens. On the other hand, when the amount of sag of the wire 300 relative to the lifting section 100 decreases and the hinge section 143 gradually closes, the opposite ends of the two subframes 141 move closer together (the distance d141 decreases). As a result, the telescopic section 140 folds and becomes contracted as the hinge section 143 closes. In other words, the hinge portion 143 changes its open / closed state according to the amount of sagging of the wire 300. Therefore, the telescopic portion 140 can extend and retract via the hinge portion 143 according to the amount of sagging of the wire. As described above, the gradual opening and closing of the hinge portion 143 suppresses the shaking of the lifting portion 100, thereby enabling stable lifting and lowering operation of the lifting portion 100. The number of subframes 141 and hinges 143 can be appropriately changed depending on the size (height) of the entertainment facility 5.

[0032] Furthermore, as shown in Figure 6, in one embodiment of the present invention, the connection part C130-2 between the left baton bracket 130-2 and the lifting unit body 110, and the connection part C130-3 between the right baton bracket 130-3 and the lifting unit body 110 are provided outside the connection part C300 between the wire 300 and the lifting unit body 110 (baton support frame 111). This allows the force (load) applied to the baton 120 to be distributed even when lighting equipment is fixed to the baton 120. As a result, deflection of the baton 120 can be suppressed.

[0033] (1-1-2. Drive unit 200) Figure 8 is a schematic front view of the drive unit 200. As shown in Figure 8, the drive unit 200 includes a rotating drum 210, a rotating drum fixing bracket 220, a linear rail 225, and a rotating drum support 230. The rotating drum 210 simultaneously winds or unwinds four wires 300. One of the four wires 300 is connected to the left front of the lifting unit body 110 (specifically the baton support frame 111). One of the four wires 300 is connected to the left rear of the lifting unit body 110. One of the four wires 300 is connected to the right front of the lifting unit body 110. One of the four wires 300 is connected to the right rear of the lifting unit body 110. As a result, the lifting unit body 110 is supported at four points, allowing the lifting unit 100 to be raised and lowered stably without the lifting unit body 110 tilting. The rotating drum 210 moves in the left-right direction via the linear rail 225 while rotating. Details of the rotating drum 210 are described below.

[0034] Figure 9 is a schematic front view of the rotating drum 210. Figure 10 is a schematic top view of the rotating drum 210. Figure 11 is a partially enlarged view of the schematic top view of the rotating drum 210. The rotating drum 210 includes a drum body 211, a motor unit 213, an adjustment unit 215, a movement assist unit 217, and a fixing unit 219.

[0035] The drum body 211 extends in the left-right direction. The drum body 211 is made of metal and has a cylindrical shape. A pulley 350 for winding the wire 300 is provided at the top of the drum body 211. The drum body 211 has a spiral groove 211a (also called the first groove) on its side. Therefore, the drum body 211 is also called a grooved drum. When the wire 300 is wound, the wire 300 is positioned in the groove 211a. In other words, the drum body 211 can wind the wire 300 through the groove 211a.

[0036] The motor unit 213 is installed on one side (the left side in this example) of the drum body 211. The motor unit 213 supplies the drum body 211 with the driving force to rotate. The type of motor unit 213 is not particularly limited. In this example, an encoder motor, which has the functions of both a motor and an encoder, is used for the motor unit 213. By using an encoder motor, the rotational speed and angle of the motor unit 213 can be accurately measured and controlled.

[0037] The movable assist unit 217 is provided on the side opposite to the drum body 211 where the motor unit 213 is located. An adjustment unit 215 is provided between the drum body 211 and the movable assist unit 217. The adjustment unit 215 may have grooves (or screw holes) as appropriate. In one embodiment of the present invention, the drum body 211 is connected to one end 215a of the adjustment unit 215, and the movable assist unit 217 (more specifically, end 217a) is connected to the end 215b of the adjustment unit 215 opposite to end 215a. In other words, the drum body 211 and the movable assist unit 217 are connected via the adjustment unit 215. The movable assist unit 217 rotates in synchronization with the rotation of the motor unit 213.

[0038] Furthermore, the end 217b of the movable assist part 217 opposite to the end 217a (the side away from the drum body 211) is movably fixed (engaged) to the fixed part 219. The fixed part 219 may be fixed to the rotating drum fixing bracket 220 via another member. In one embodiment of the present invention, the movable assist part 217 is provided in the shape of a rod. In this embodiment, a lead screw is used as the movable assist part 217. In this example, a resin-lubricated lead screw is used. A spiral groove 217c (also called the "second groove") is formed on the side surface of the resin-lubricated lead screw. In addition, a screw hole (internal thread) corresponding to the resin-lubricated lead screw is formed in the fixed part 219. As a result, each time the movable assist part 217 (resin-lubricated lead screw) rotates, the movable assist part 217 changes its position in the left-right direction relative to the fixed part 219. In other words, the movable assist part 217 (resin-lubricated lead screw) can convert the rotational motion of the drum body 211 into linear motion. As a result, the movement assist unit 217 can assist the linear movement of the drum body 211 in the left-right direction.

[0039] Furthermore, as shown in Figure 11, in one embodiment of the present invention, the pitch P211 of the groove 211a (first groove) of the drum body 211 and the pitch P217 of the groove 217c (second groove) of the movable assist unit 217 are the same. More specifically, the pitch P211 of the groove 211a of the drum body 211 and the pitch P217 of the groove 217c (second groove) of the movable assist unit 217 correspond to the diameter of the wire 300. This makes it possible to make the distance that the movable assist unit 217 (resin-lubricated lead screw) moves in the left-right direction when it rotates 360° and the distance that the drum body 211 moves in the left-right direction when it rotates 360° correspond to the diameter of the wire 300. In this case, the angle between the perpendicular line connecting the pulley 350 to the drum body 211 and the wire 300 extending from the drum body 211 toward the pulley 350 (in other words, the angle between the surface G350 on which the groove 350a (also called the "third groove"), which is provided circumferentially on the pulley 350 located on the upper part of the drum body 211 and contacts the wire 300, exists, and the wire 300 (or the extension direction D300) extending from the drum body 211 toward the pulley 350 (also called the "fleet angle")) is approximately 0 degrees (also called the "non-fleet" angle).

[0040] Figures 12 and 13 are schematic top views of the rotating drum 210 winding the wire 300. As described above, the rotating drum 210 rotates due to the drive of the motor unit 213. As the drum body 211 rotates, the wire 300 is wound onto the drum body 211. At this time, by using one embodiment of the present invention, the left-right position of the pulley 350 and the groove 211a of the winding portion of the drum body 211 coincide, so that the wire 300 is wound straight without being slanted and the wire 300 is firmly positioned in the groove 211a of the drum body 211 (the opposite is true when it is unwound). As a result, the wire 300 can be supplied stably when the wire 300 is wound further or unwound thereafter. In other words, by using one embodiment of the present invention, the lifting unit 100 can be raised and lowered stably.

[0041] Furthermore, in one embodiment of the present invention, the adjustment unit 215 allows the drum body 211 and the movement assist unit 217 to be separated. This allows the rotational phase of the drum body 211 to be adjusted as appropriate.

[0042] The rotating drum fixing bracket 220 is provided to fix the rotating drum 210. In this example, the rotating drum fixing bracket 220 is provided on the upper and lower parts of the rotating drum 210. The rotating drum fixing bracket 220 is fixed to the lifting device support frame 700 using fasteners. The rotating drum fixing bracket 220 may also be provided as an integral part of the rotating drum 210.

[0043] The rotating drum support section 230 is provided to support the rotating drum 210 (and the rotating drum fixing bracket 220). The rotating drum support section 230 is provided on both the left and right sides. The lower end 230a (second end) of the rotating drum support section 230 is connected to the lower side of the rotating drum 210 (rotating drum fixing bracket 220). The upper end 230b (first end) of the rotating drum support section 230 is connected to the lifting device support frame 700. In this example, the rotating drum support section 230 has a linear shape.

[0044] (1-1-3. Trolley section 400) The trolley section 400 is mounted on the upper part of the lifting device support frame 700. By sliding the trolley section 400 along the rail 40, the lifting device 10 can move forward F or backward D (front-to-back direction) of the entertainment facility 5.

[0045] The trolley section 400 is equipped with wheels. The trolley section 400 is mounted to engage with the rail 40. In one embodiment of the present invention, the trolley section 400 is mounted on the upper left and right sides of the lifting section 100 and on the upper left and right sides of the drive section 200. The trolley section 400 is mounted on the upper side of the lifting device support frame 700 and is connected to the lifting device support frame 700 using fasteners. The trolley section 400 functions as a component that supports the lifting section 100 and the drive section 200.

[0046] (1-1-4. Power trolley section 500) The power trolley unit 500 is installed in the upper part of the ceiling area (more specifically, the upper part of the lifting device support frame 700). Power is constantly supplied to the lifting device 10 via the power trolley unit 500. As a result, power is secured even when the lifting device 10 moves in the front-rear direction, so the lifting device 10 can use the power to drive the drive unit 200 and perform the lifting and lowering operation of the lifting unit 100.

[0047] (1-1-5.Operation unit 600) The control unit 600 is a component that can be operated by the user. For example, the control unit 600 may include buttons, levers, and a numeric keypad. In this example, the control unit 600 is located on the right side of the lifting unit 100. The user can control the operation of the lifting device 10 by operating the control unit 600. In addition to buttons, levers, and a numeric keypad, a touch panel may also be used for the control unit 600.

[0048] (1-1-6. Lifting device support frame 700) The lifting device support frame 700 is a frame for supporting the lifting device 10. The lifting device support frame 700 extends in the left-right direction when viewed from the front. The lifting device support frame 700 is located above the lifting device 10. In this example, the lifting device support frame 700 is made of a light metal material (more specifically, aluminum).

[0049] (1-1-7.Buffer part 800) Let's return to Figure 2 for explanation. The buffer sections 800 are provided at both ends of the lifting device support frame 700. Specifically, buffer section 800F is provided at the front end of the lifting device support frame 700. Buffer section 800D is provided at the rear end of the lifting device support frame 700. The buffer sections 800 are made of an elastic material (such as resin or a spring) to mitigate the impact upon contact. This reduces the impact even if one lifting device 10 collides with another lifting device 10 when moving in the front-rear direction.

[0050] (1-2. Lifting and lowering motion) Next, the lifting and lowering operation of the lifting device 10 will be described. As shown in Figure 3, when a user performs a lowering operation on the control unit 600 (in this example, pressing the lowering button), the drive unit 200 (rotating drum 210) rotates, the wire 300 is supplied to the lifting unit 100, and the amount of wire hanging down (the length of the wire hanging down) increases. At this time, as shown in Figure 7, the uppermost hinge 143 of the telescopic unit 140 opens, the uppermost subframe 141 and the unconnected end of the second subframe 141 separate, and the telescopic unit 140 extends. By repeating this operation, the lifting unit 100 can be lowered to near the floor of the entertainment facility 5, as shown in Figure 14. On the other hand, when an upward operation is performed on the control unit 600, the opposite operation is performed. As a result, the lifting device 10 can be raised. Therefore, by using one embodiment of the present invention, the lifting unit 100 of the lifting device 10 can be easily raised and lowered in the vertical direction.

[0051] Furthermore, in one embodiment of the present invention, when the lifting unit 100 rises, the rotating drum 210 moves in the left-right direction (to the right in this example) in the order of Figures 10, 12, and 13. At this time, the left-right position of the pulley 350 (grooved portion) and the groove 211a of the winding portion of the drum body 211 coincide, so that the wire 300 is wound straight without being slanted, and the wire 300 is firmly positioned in the groove 211a of the drum body 211. This allows the wire 300 to be wound stably. In other words, by using one embodiment of the present invention, the lifting unit 100 can be raised stably.

[0052] Furthermore, in one embodiment of the present invention, the lifting unit 100 and the drive unit 200 are arranged side by side in the front-to-back direction. As a result, when the batten 120 of the lifting device 10 is raised to its highest position, the space in the ceiling area can be used more effectively compared to when the lifting unit 100 and the drive unit 200 are arranged side by side in the vertical direction (up and down direction), and there can be more headroom in the ceiling area (the height restriction in the ceiling area is relaxed). Therefore, when the batten 120 is raised to its highest position, the lower end 120a of the batten 120 can be raised to a position higher than the upper end 21a of the handrail 21 of the ceiling passage 20. As a result, the lifting device 10 can be moved in the front-to-back direction without interfering with the handrail 21, and lighting equipment can be freely positioned.

[0053] Figure 15 is a schematic diagram showing the usage state of an entertainment facility 5 in an entertainment facility lifting system 1. As shown in Figure 15, the entertainment facility 5 is equipped with a lifting device 10 on which lighting equipment 90 is placed, a stage set 60, and performers 70. By using one embodiment of the present invention, the lighting equipment 90 can be positioned at desired locations (vertical position (height), front-to-back position), so that various effects can be performed according to the specifications of the entertainment facility 5.

[0054] <Variation> The embodiments described above are explained in detail for the purpose of clearly illustrating this disclosure and are not necessarily limited to those having all the configurations described. Furthermore, it is possible to replace parts of the configuration of one embodiment with those of another embodiment, and it is also possible to add configurations from other embodiments to the configuration of one embodiment. In addition, it is possible to add, delete, or replace parts of the configuration of each embodiment with those of other embodiments.

[0055] One embodiment of the present invention shows an example in which lighting equipment is used as a suspended structure for an entertainment facility, but the present invention is not limited to this. For example, in addition to lighting equipment, stage curtains, stage curtains, performance equipment (such as falling flower petals, smoke, and blowers), painted backdrops and background paper, and stage sets may also be used as suspended structures for an entertainment facility.

[0056] Furthermore, although one embodiment of the present invention shows an example in which the ceiling passageway 20 is provided in a grid pattern, the present invention is not limited to this. The ceiling passageway 20 is not limited to a grid pattern, and may be provided along the front-to-back direction, along the left-to-right direction, or intersecting in the front-to-back direction or the left-to-right direction.

[0057] Furthermore, in one embodiment of the present invention, an example was shown in which a resin-lubricated lead screw is used as the lead screw in the movement assist unit 217, but the present invention is not limited thereto. In addition to resin-lubricated lead screws, ball screws, trapezoidal screws, Acme screws, lead screws, spiral screws, trapezoidal screws, and square screws can also be used. [Explanation of symbols]

[0058] 1···Lifting system for entertainment facilities, 10···Lifting device, 10-11···Lifting device, 10-12···Lifting device, 10-13···Lifting device, 10-14···Lifting device, 10-15··Lifting device, 10-21···Lifting device, 20···Ceiling walkway, 21···Handrail, 21a···Upper end, 30···Opening, 30-1···Opening, 40···Rail, 60···Stage equipment, 70···Performer, 90· ...Lighting equipment, 91...Fixing device, 100...Lifting section, 110...Lifting section body, 111...Baton support frame, 113...Frame section, 115...Wire connection section, 120...Baton, 120a...Lower end, 130...Baton bracket, 130-1...Center baton bracket, 130-2...Left baton bracket, 130-3...Right baton bracket, 130a...End, 130b...End, 140... Telescopic section, 140a... End section, 140b... End section, 141... Subframe, 143... Hinge section, 150... Rail, 200... Drive section, 210... Rotating drum, 211... Drum body, 211a... Groove section, 213... Motor section, 215... Adjustment section, 215a... End section, 215b... End section, 217... Movement assist section, 217a... End section, 217b... End section, 217c... Groove section, 219... Fixing Fixed section, 220... Rotating drum fixing bracket, 225... Linear rail, 230... Rotating drum support section, 230a... End section, 230b... End section, 300... Wire, 300... Rear wire, 350... Pulley, 350a... Groove section, 400... Trolley section, 500... Power trolley section, 600... Operating section, 700... Lifting device support frame, 800... Buffer section, 800D... Buffer section, 800F... Buffer section

Claims

1. A rotating drum having a drum body that extends in a first direction and winds a wire via a first groove provided in a spiral shape, and a movement assisting part connected to the drum body and assisting the movement of the drum body in the first direction via a second groove provided in a spiral shape, It includes a lifting section that can be raised and lowered using the wire by the rotating drum, In the first direction, the pitch of the first groove of the drum body and the pitch of the second groove of the moving assist part are the same. Lifting device.

2. The aforementioned movement assisting part is a feed screw. The lifting device according to claim 1.

3. The drum body is provided on the upper side and includes a pulley that supplies the wire from the drum body to the lifting section, The angle between the perpendicular line connecting the pulley to the drum body and the wire extending from the drum body toward the pulley is approximately 0 degrees. The lifting device according to claim 2.

4. To enable separation of the drum body and the movable assisting unit, an adjustment unit is provided between the drum body and the movable assisting unit, and includes an adjustment unit capable of adjusting the rotational phase of the drum body. The lifting device according to claim 2.

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