CN217027584U

CN217027584U - Suspension type acoustic reflection cover

Info

Publication number: CN217027584U
Application number: CN202220005976.8U
Authority: CN
Inventors: 王庆宪; 刘卫平
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-07-22
Anticipated expiration: 2032-01-04

Abstract

A suspension type sound reflection cover used for a stage. The top plate, the side plates and the back plate of the sound reflecting cover are all hung on the stage top and are put down when in use and are hung up when not in use. Due to the suspension installation, the structure of the sound reflecting plate can be simple and light. The top plate and the side plates of the anti-sound cover both adopt a folding structure and are suspended on the upper part of the stage by using a steel cable. The top plate and the side plate are both hoisted by a steel cable and suspended by a positioning steel cable, the positioning steel cable is used for determining the suspension positions of the top plate and the side plate, and the hoisting steel cable is used for folding the top plate and storing. The lifting steel cable is fixed on the stage suspender, and the stage suspender is used for lifting the sound reflecting cover.

Description

Suspension type acoustic hood

Technical Field

The sound reflection cover is also called sound reflection cover, music cover, sound reflection plate, music sound reflection cover, acoustic reflection cover, sound reflection cover, etc. The effect is to create a better natural acoustic environment for playing a live concert in an opera house. The acoustic reflection cover is a stage device arranged in the front area of the main stage.

Background

The sound reflection cover consists of a top plate, side plates and a rear plate. Typically made using aluminum or plastic sheets. The existing anti-sound cover top plate in use is usually made into a foldable structure, and is folded when not in use and hung on a stage suspender when in use. The back board and the side board are 2 kinds of integral and folding, and the sound reflecting board is loaded on one small vehicle, and is set in the back or side of stage when not in use and pushed to the required position when in use. The maximum height of the sound reflecting plate is about 6 meters, and the sound reflecting plate is made of light and thin materials, so that the sound reflecting plate is not easy to store and is easy to damage.

Disclosure of Invention

The top plate, the side plates and the back plate of the sound reflecting cover are hung on the top of the stage through the stage hanging rod, and are put down when in use and are hung up when not in use. Because of the suspension installation, the strength design of the anti-sound board only needs to consider the gravity influence, so the structure can be simple and light. The stage top is usually provided with a plurality of stage suspenders controlled by a winch, and the stage suspenders are used for suspending a curtain, a stage background and other performance props. The invention uses several stage hanging rods, the top plate, the side plate and the back plate are fixed on the corresponding stage hanging rods, when in use, the winch is operated to put down the anti-sound cover, and when not in use, the anti-sound cover is lifted up and hung on the top of the stage. The invention is realized in the following way: the top plate adopts a folding structure, 2 plates in the front and the back are used, and the middle is provided with a hinge which can be folded. The top plate is relatively long and uses several identical sets of suspension systems. Each group of suspension systems of the top plate uses 2 hoisting steel cables and one positioning steel cable; the positioning steel cable is used for determining the hanging height of the top plate, and the hoisting steel cable is used for folding the top plate and hanging the storage top plate. The top plate comprises a front plate, a rear plate, a top plate suspender, a limiting mechanism, a sling and the like. The top plate suspension rod is a rigid rod, and a hinge hole is arranged below the rigid rod and hinged with the hinges of the front and rear 2 top plates. Because the light needs to be installed on the top plate, the light is installed in enough space inside the folded top plate, and the height of the hinge below the top plate suspender corresponds to the thickness of the light. One end of the positioning steel cable is connected with the upper part of the top plate suspender, and the other end of the positioning steel cable is connected to the wire rewinding device. When the top plate is put down, the working height of the top plate is exactly the limit position for positioning the steel cable to be put down. The longitudinal beams are installed on the front plate and the rear plate of the top plate, one ends of the 2 folding steel cables are respectively connected to the longitudinal beams of the front plate and the rear plate, the other ends of the 2 folding steel cables are combined together and connected to the lifting steel cable, and the other end of the lifting steel cable is fixed on the stage suspender. When the stage suspender rises, the hoisting steel cable rises, the folding steel cable is pulled to fold the top plate, and then the folded top plate is lifted to the parking height along with the rising of the stage suspender. In the lifting process, the positioning sling is not stressed and is retracted by the wire collector. When the top plate is lowered, the stage suspender descends, the hoisting steel cable puts down the top plate along with the stage suspender, and the positioning steel cable is pulled out from the middle of the wire rewinding device along with the descending of the top plate. When the top plate descends to the limit position of the positioning steel cable, the top plate is limited by the positioning steel cable to stop descending. The hoisting steel cable continues to descend, and the front plate and the rear plate are gradually opened under the action of gravity. When the front and rear plates are opened to the predetermined position of the limiting mechanism, the opening angle of the front and rear plates is not increased.

When the sound reflecting plate is placed, the side plates on the two sides are close to the two ends of the top plate and are perpendicular to each other. In order to conveniently hoist the side plates on the grid top, the side plates are made into 2 foldable single side plates. The top of the side plate is provided with a folding steel cable and a positioning steel cable, and the bottom is provided with a universal wheel. One end of the positioning steel cable is connected to the wire winding device, and the other end of the positioning steel cable is fixed on the hinge shaft of the side plate hinge. The positioning steel cable is used for determining the landing position of the side plate and keeping the side plate in an upright posture. The top of the side plate is provided with an inner lifting lug and an outer lifting lug, two ends of the outer folding steel cable are respectively connected to the outer lifting lugs of the 2 single side plates, and the middle of the outer folding steel cable is connected with an outer sling. Two ends of the inner side folding steel rope are respectively connected to the inner side lifting lugs of the 2 single side plates, and the middle of the inner side folding steel rope is connected with an inner sling. The other ends of the inner and outer slings are fixed on the stage suspender. When the side plate is lifted, the sling lifts the folding steel cable along with the rising of the stage suspender, the folding sling folds the side plate under the action of horizontal component force, when the side plate is folded, the sling continues to rise to lift the side plate away from the ground, the positioning sling loses the gravity load of the side plate and is retracted by the take-up device, and the sling lifts the side plate to a storage position. In the process that the side plate is put down, the side plate is continuously pulled out from the wire collector along with the descending of the stage suspender, when the side plate descends to the limit position of the positioning sling, the side plate just contacts the ground, and as the positioning sling has elasticity, part of the load of the side plate is borne by the positioning sling, and part of the load of the side plate is borne by the universal wheel at the bottom of the side plate. The stage suspender continues to descend, the sling is completely loosened, and at the moment, the folded side plate can be manually opened and placed at a set position. The side plates can be kept in an upright posture because the positioning slings on the upper parts of the side plates can apply a vertical upward pulling force to the side plates.

The back plate is directly fixed on the stage suspender and is controlled to ascend and descend by the stage suspender.

Because the positioning steel cables do not bear the gravity of the top plate and the side plate after the top plate and the side plate are lifted, in order to avoid the hanging positioning steel cables from being wound, the top ends of the positioning steel cables of all the top plate and the side plate are connected to respective wire winders, and the wire winders retract the hanging steel cables, so that the steel cables are always kept in a vertical state. The wire winder uses a volute spiral spring to drive a wire winding wheel to retract the positioning steel cable. The wire winder is fixed on the top of the grid, and the wire winder bracket is provided with an opening through which the positioning steel cable passes. A positioning stop block is sleeved on the positioning steel cable, and when the positioning stop block touches the opening, the steel cable does not descend any more, so that the working length of the positioning steel cable is determined.

Drawings

Fig. 1 is a schematic structural view of the side panel in an open state after falling to the ground.

Fig. 2 is a schematic structural view of the folded side plates.

Fig. 3 is a schematic structural view of the opened state of the top panel.

Fig. 4 is a structural schematic diagram of the folded state of the top plate.

Fig. 5 is a schematic view showing a storage state of the top plate and the side plates.

Fig. 6 is a schematic view showing the working state of the top plate and the side plates after being laid down.

Fig. 7 is a schematic view of a wire rewinding device.

In FIG. 1: 1. the device comprises a caster, 2, a single side plate, 3, a hinge, 4, a far-end lifting lug, 5, a hinge shaft, 6, an outer side folding steel cable, 7, a positioning steel cable, 8, an inner side folding steel cable, 9, an inner side lifting lug, 10, an outer sling, 11 and an inner sling.

In FIG. 2: 1. the device comprises a caster, 2, a single side plate, 3, a hinge, 4, a far-end lifting lug, 5, a hinge shaft, 6, an outer side folding steel cable, 7, a positioning steel cable, 8, an inner side folding steel cable, 9, an inner side lifting lug, 10, an outer sling, 11 and an inner sling.

In FIG. 3: 301. roof longitudinal beams 302, a front limiting steel cable 303, a roof suspension rod 304, a roof positioning steel cable 305, a roof hoisting steel cable 306, a rear folding steel cable 307, a lighting lamp 308, a rear roof 309, a rear limiting steel cable 310, a rear plate hinge 311, a front plate hinge 312, a limiting ring 313, a front roof 314 and a front folding steel cable.

In fig. 4: 301. roof longitudinal beams 302, a front limiting steel cable 303, a roof suspension rod 304, a roof positioning steel cable 305, a roof hoisting steel cable 306, a rear folding steel cable 307, a lighting lamp 308, a rear roof 309, a rear limiting steel cable 310, a rear plate hinge 311, a front plate hinge 312, a limiting ring 313, a front roof 314 and a front folding steel cable.

In fig. 5: 6. outer folding steel cable, 7, positioning steel cable, 8, inner folding steel cable, 100, side plate, 300, top plate, 304, top plate positioning steel cable, 305, top plate hoisting steel cable, 400 and stage suspender.

In fig. 6: 6. an outer side folding steel cable 7, a positioning steel cable 8, an inner side folding steel cable 100, a side plate 300, a top plate 304, a top plate positioning steel cable 305, a top plate hoisting steel cable 400 and a stage hanging rod.

In FIG. 7: 201. adjusting bolts 202, a sling positioning block 203, a sling 204, a take-up pulley 205, a volute spiral spring 206, a shaft 207 and a bracket.

The specific implementation mode is as follows:

the embodiments of the invention will be further explained with reference to the drawings in which:

fig. 1 is a schematic view showing a side panel in an open state after falling to the ground. In order to clearly show the relative position of the several cables, a top view is also provided below. The cable display state of the front view and the top view is different from the actual state. The 2 single-side plates (2) are connected together through a hinge (3) and a hinge shaft (5). The caster wheels (1) are installed below the single side plate (2), the inner side lifting lugs (9) are installed at the positions, close to the hinge shafts (5), of the tops, the outer side lifting lugs (4) are installed at the positions, far away from the hinge shafts (5), one ends of the 2 outer side folding steel cables (6) are connected to the outer side lifting lugs (4) respectively, and the other ends of the two outer side folding steel cables are combined together and connected to an outer sling (10). One ends of the 2 inner side folding steel ropes (8) are respectively connected to the inner side lifting eyes (9), and the other ends are combined together and connected to the inner sling (11). The upper end of the hinge shaft (5) is connected with a positioning steel cable (7). When the positioning steel cable (7) reaches the limit position, the side plate falls to the ground, and the caster (1) supports the weight of the side plate. The positioning steel cable (7) enables the side plate to be positioned on the ground of the stage and keeps the side plate in an upright posture. When the inner sling (11) and the outer sling (10) are lifted up, the gravity of the side plate gradually falls onto the inner folding steel rope (8) and the outer folding steel rope (6) to generate an inward component force for the inner folding steel rope (8) and the outer folding steel rope (6) so that 2 single side plates (2) are folded inwards. When the side plates are folded, the inner sling (11) and the outer sling (10) drive the side plates to rise to a storage position.

Fig. 2 shows a schematic view of the folded side panels. The inner folding steel cable (8) and the outer folding steel cable (6) fold 2 single side plates (2) under the action of folding component force, and the side plates are lifted by inner slings (11) and outer slings (10). At the moment, the gravity of the side plate is totally arranged on the inner sling (11) and the outer sling (10), and the positioning steel cable (7) does not bear the gravity of the side plate and only bears the take-up force of the take-up device.

Fig. 3 is a schematic view showing a structure in an open state of the top panel. The top plate consists of a front top plate (313), a rear top plate (308), a front folding steel cable (314), a rear folding steel cable (306), a top plate hoisting steel cable (305), a top plate hanging rod (303) and the like. The lower end of the top plate hanging rod (303) is provided with a hinge hole which is hinged with a front plate hinge (311) and a rear plate hinge (310), and the front top plate (313) and the rear top plate (308) are combined together through the 2 hinges. Roof side rails (301) are mounted to both the front roof panel (313) and the rear roof panel (308). One end of the front folding steel cable (314) and one end of the rear folding steel cable (306) are connected to the roof longitudinal beams (301) of the front roof (313) and the rear roof (308), and the other ends are combined together and connected to the roof lifting steel cable (305). The illustration is the instant the top plate comes into position or the instant the top plate begins to rise. During the lifting of the top plate, as the top plate lifting wire (305) continues to rise from this state, the front top plate (313) and the rear top plate (308) start to fold under the inward force component of the front folding wire (314) and the rear folding wire (306), and after folding, the top plate starts to be lifted. In the process of descending the roof, the roof positioning steel cable (304) descends to the limit position along with the roof suspender (303), the roof positioning steel cable (304) pulls the roof suspender (303) to stop descending, the roof hoisting steel cable (305) continues descending, the front folding steel cable (314) and the rear folding steel cable (306) are released, and the roof starts to be opened under the action of gravity. The stop position of the top plate opening is determined by a limiting mechanism, and the limiting mechanism consists of a limiting ring (312), a front limiting steel cable (302) and a rear limiting steel cable (309). The limiting ring (312) is sleeved on the top plate hanging rod (303) and can move along the top plate hanging rod (303). The limit ring (312) is provided with a set screw, and the limit ring (312) can be fixed at any position of the top plate suspender (303). One end of the front limiting steel cable (302) and one end of the rear limiting steel cable (309) are sleeved on the top plate hanging rod (303) and clamped by the limiting ring (312), and the other end of the front limiting steel cable and the other end of the rear limiting steel cable are hinged on the longitudinal beam (301) of the front top plate (313) and the rear top plate (308). When the top plate is unfolded, the front limiting steel cable (314), the rear limiting steel cable (309) and the limiting ring (312) limit the opening angle of the top plate together, and when the top plate is folded, the front limiting steel cable (302) and the rear limiting steel cable (309) are loosened and do not block the folding of the top plate. The top plate positioning steel cable (304) is used for determining the working height of the top plate, one end of the top plate positioning steel cable is connected to the top plate hanging rod (303), the other end of the top plate positioning steel cable is fixed on the grid top through a wire winding device, and after the top plate is lowered to the working height position, the top plate positioning steel cable (304) reaches the limit position and starts to bear the weight of the top plate. After the top plate leaves the working position, the top plate positioning steel cable (304) is unloaded, and the weight of the top plate is carried by the top plate hoisting steel cable (305). The front top plate (313) and the rear top plate (308) are also provided with illuminating lamps (307), and the number of the illuminating lamps (307) is determined according to the size of the stage.

Fig. 4 shows a schematic view of the folded state of the top panel. When the top plate is folded,

when the lifting is carried to the storage position, the top plate lifting steel rope (305) bears the gravity of the top plate. The illuminating lamps (307) arranged on the front top plate (313) and the rear top plate (308) are arranged in a staggered mode, so that the illuminating lamps (307) fully utilize the inner space of the top plates, and the thickness of the folded top plates is reduced as much as possible. The top panel fold thickness is dependent on the height of the back panel hinge (310) and the front panel hinge (311).

Fig. 5 is a schematic view showing a storage state of the top plate and the side plates. The outer folding steel cable (6) and the inner folding steel cable (8) on the side plate (100) and the top plate hoisting steel cable (305) on the top plate (300) are fixed on the stage suspender (400). The top plate (300) and the side plate (100) rise and fall along with the stage suspender (400). The positioning wire rope (7) and the top plate positioning wire rope (304) are connected to the wire-rewinding device upwards.

Figure 6 shows the working condition of the top and side panels when they are lowered. After the side plate (100) falls to the ground, the outer side folding steel cable (6) and the inner side folding steel cable (8) are completely loosened, and the side plate can be opened. The caster (1) contacts the stage, supports the weight of the side plate (100), and the positioning steel cable (7) determines the landing position of the side plate (100) and keeps the side plate (100) in an upright posture. After the top plate (400) reaches the working position, the top plate positioning steel cable (304) bears the weight of the top plate (400), the front top plate (313) and the rear top plate (308) of the top plate (400) are gradually opened along with the continuous loosening of the front folding steel cable (314) and the rear folding steel cable (306), and the front folding steel cable (314) and the rear folding steel cable (306) are completely loosened after the top plate (400) is opened to the working position.

Fig. 7 shows a schematic diagram of a wire rewinding device. The take-up device is used for positioning the working position of the top plate or the side plate by using the sling (203) when the top plate or the side plate is put down, and retracting the sling (203) when the top plate or the side plate is lifted. 3 adjusting bolts (201) are installed on the support (207), so that the horizontal position of the support can be adjusted, and the positioning height of the sling (203) can be finely adjusted. The take-up pulley (204) is arranged on the bracket (207), the scroll spring (205) and the take-up pulley (204) are coaxial and are arranged on the shaft (206) together, one end of the scroll spring (205) is fixed on the shaft (206), and the other end is fixed on the take-up pulley (204). The shaft (206) is fixed on the bracket (207) so as not to rotate, and the take-up pulley (204) is arranged on the shaft (206) through a bearing. When the top plate or the side plate is lifted, the sling (203) is loosened, and the spiral spring (205) drives the take-up pulley (204) to retract the sling (203). When the top plate or the side plate is put down, the gravity of the top plate or the side plate is larger than the elastic force of the scroll spring (205), the sling (203) is pulled out from the take-up pulley (204), and the scroll spring (205) is tightened at the same time. The bracket (207) is provided with a hole which is opposite to the vertical tangent position of the take-up pulley (204). The sling positioning block (202) is sleeved on the sling (203) and is fixed on a set position of the sling (203) by a set screw. When the top plate or the side plate is put down, the sling (203) is placed along with the top plate or the side plate, when the top plate or the side plate reaches a preset position, the sling positioning block (202) is clamped to the position of the support hole, the sling (203) does not fall any more, and the top plate or the side plate stops at a determined position.

Claims

1. The utility model provides a suspension type anti-acoustic hood, by backplate, collapsible roof, collapsible curb plate and hang the cable wire and constitute which characterized in that: the hoisting steel cables of the top plate, the side plates and the back plate are respectively fixed on the corresponding stage suspender; the top plate is of a folding structure and is divided into a front plate and a rear plate, the front plate and the rear plate are provided with illuminating lamps, the 2 plates are hinged to the lower part of a rigid top plate suspender through a hinge, and a hoisting steel cable is connected to a longitudinal beam of the top plate to play the roles of folding the top plate and hanging for storage; the top plate suspender is provided with a limiting mechanism used for controlling the opening angle of the top plate; the side plate is made into a folding type, a lifting lug and a positioning steel cable are arranged at the top of the side plate, universal wheels are arranged at the lower part of the side plate, the folding steel cable is connected to the lifting lug of the side plate, a sling is connected to the middle of the folding steel cable, and the sling is used for folding the side plate and lifting the side plate; the positioning steel cable of the side plate is fixed on the stage grid top through a wire rewinding device and plays a role in positioning the working height of the top plate and determining the landing position of the side plate; after the top plate and the side plates are lifted, in order to prevent the positioning steel cables of the top plate and the side plates from being wound, the positioning steel cables are respectively connected to the wire winders, and the wire winders are fixed on the top of the grid.

2. A suspended acoustical shell as set forth in claim 1, wherein: the top plate consists of a front plate and a rear plate which are provided with hinges, the middle part of the top plate is provided with a rigid top plate hanging rod, a hinge hole is arranged below the top plate hanging rod, and the hinges of the front plate and the rear plate are hinged with the lower part of the top plate hanging rod; longitudinal beams are arranged on the front top plate and the rear top plate, one end of a folding steel cable of the front top plate and the rear top plate is respectively connected to the front longitudinal beam and the rear longitudinal beam of the top plate, and the other end of the folding steel cable of the front top plate and the rear top plate is connected to a lifting steel cable of the top plate after being combined; the top end of the top plate suspender is connected with the top plate positioning steel cable.

3. A suspended acoustical shell as set forth in claim 1, wherein: the top plate suspender is a rigid rod, the upper end of the top plate suspender is connected with the positioning steel cable, and the lower end of the top plate suspender is provided with a hinge hole which is hinged with the hinges of the front plate and the rear plate; the hanger rod is sleeved with a positioning ring and a limiting steel cable.

4. A suspended acoustic enclosure as claimed in claim 1, wherein: the limiting mechanism on the top plate suspender consists of 2 limiting steel cables and a limiting ring; the limiting ring is sleeved on the top plate suspender and provided with a set screw which can be fixed on any position of the top plate suspender; one end of each of 2 limiting steel cables is hinged to the longitudinal beam of the front and the rear plates, and the other end of each limiting steel cable is sleeved on the top plate suspender and clamped by the limiting ring to limit the position.

5. A suspended acoustic enclosure as claimed in claim 1, wherein: the side plate is divided into 2 single plates which are connected into a whole through hinges; the top end of the hinge shaft is connected to a positioning steel cable, and the limiting position of the falling of the positioning steel cable is that the side plate falls on a position determined by a stage, and meanwhile, the side plate is kept in an upright posture; 2 lifting lugs are installed at the top of each single plate of the side plate, one end of each of 2 inner side folding steel cables is connected to the inner side lifting lug of the 2 single plates close to the hinge, and the other ends of the inner side folding steel cables are combined together to form an inner sling; one end of each of the 2 outer side folding steel cables is connected to an outer side lifting lug of the 2 single plates far away from the hinge, and the other ends of the two outer side folding steel cables are combined together to form an outer sling; the 2 hoisting steel cables are all fixed on the stage suspender; 2 truckles are further installed below each single plate, the truckles can bear part of the weight of the side plates, and the side plates can be conveniently opened after falling to the ground.

6. A suspended acoustic enclosure as claimed in claim 1, wherein: the wire-rewinding device consists of a bracket, a wire-rewinding wheel, a positioning block and a volute spiral spring, and is arranged on the top of the stage grid; the positioning steel cable is wound on a take-up pulley, and the take-up pulley is arranged on a shaft through a bearing; the volute spiral spring is coaxial with the take-up pulley, one end of the volute spiral spring is fixed on the take-up pulley, and the other end of the volute spiral spring is fixed on the shaft; the shaft is fixed on the bracket and cannot rotate; the bracket is provided with an opening which faces a vertical tangent line of the take-up pulley; the positioning steel cable extending from the winding wheel is hung to the lower surface of the grid top through the opening and connected to the top plate or the side plate; the positioning steel cable is sleeved with a sling positioning block, the sling positioning block is provided with a set screw, the positioning block is fixed at a preset position of the positioning steel cable by the set screw, when the positioning steel cable goes down, the sling positioning block is clamped in the hole, the positioning steel cable does not go down any more, and the positioning steel cable stops at the position.

7. A suspended acoustic enclosure as claimed in claim 1, wherein: the slings of the top plate, the side plates and the back plate are fixed on the stage suspender, and are driven by the stage suspender to be lifted and put down.