Sound reflecting cover structure

Abstract

The invention discloses a sound reflecting cover structure for a stage. And the side plate of which the upper part is provided with the hanging bracket is arranged on a side plate frame with a hanging point through a hinge. A movable support with trundles and adjusting supporting legs is installed on the rear plate, and the movable support can be opened and can be fixed through a lock catch after being folded. A penetrating steel pipe is installed in the aluminum square pipes on the two sides of the aluminum honeycomb plate inner frame of the side plate, the side plate and the penetrating steel pipe are fixed together through screws, and a hanging bracket is installed on the penetrating pipe.

Description

Technical Field

[0001] A sound reflector, also known as a acoustic reflector, music reflector, sound reflector panel, musical acoustic reflector, acoustic reflector, or soundproof reflector, is a stage device installed in the area in front of the main stage. Its function is to create a better natural acoustic environment for live concerts in opera houses. Background Technology

[0002] A soundproof enclosure consists of a top panel, side panels, and a rear panel. It is typically made of aluminum or plastic. Common soundproof enclosure top panels are usually foldable, stored on a dedicated vehicle when not in use, and unfolded and hung on stage rigging when needed. There is also a suspended soundproof enclosure, which suspends above the stage when not in use; when in use, the rigging is lowered and the top panel automatically unfolds, while the side panels are manually opened after touching the ground. However, because the suspension point of the side panels when opened is on the side panel hinge axis, the outer ends of the side panels will touch the ground. Although there are casters at the landing points, the heavy load can easily damage the floor. Furthermore, manual opening is not very convenient. Summary of the Invention

[0003] The suspended acoustic enclosure solves the problem of automatic opening of the top panel, but the side panels still require manual opening. To address this, an opening spring mechanism is installed on the side panels, using spring force to open them after they reach the bottom. When the side panels reach the limit position of the positioning slings but before fully opening, the outer edge of the side panels will touch the ground. To prevent the side panels from touching the ground during unfolding, a balancing frame is used, with the side panels hinged to it. For easy opening, the positioning slings for the side panels are installed on the side panel hanger, and another positioning sling is installed at the rear of the balancing frame. The two positioning slings for the side panels and the one at the rear of the balancing frame are of the same length, ensuring the side panels remain parallel to the bottom surface in any position. Additionally, the acoustic enclosure should ideally have adjustable depth, with a larger depth for large orchestras and a smaller depth for small orchestras, allowing for a more harmonious arrangement of different orchestras within the enclosure. To adjust the depth of the acoustic enclosure, a movable bracket is added to the rear panel of the enclosure, and a roller is installed on the bottom surface of the rear panel. After the rear panel is placed on the ground, the bracket is opened, and the rear panel is pushed to the appropriate position. The hanger on the rear panel is installed at the top of the rear panel. After the rear panel is placed on the ground, the hanger is pulled by the hanger to prevent the rear panel from tilting forward, thus eliminating the need to install counterweights on the rear panel bracket. Attached Figure Description

[0004] Figure 1 This is a schematic diagram of the side plate being mounted on the side plate balance frame.

[0005] Figure 2 This is a schematic diagram of the side plate balance frame structure.

[0006] Figure 3 This is a schematic diagram of the structure for mounting the movable bracket on the rear panel.

[0007] Figure 4 This is a schematic diagram of a side panel hanger structure.

[0008] Figure 5 This is a schematic diagram of the side panel opening mechanism.

[0009] Figure 1 In the middle: 1. Side plate, 2. Side plate balance frame, 3. Positioning hook, 4. Suspension hook, 5. Positioning steel cable, 6. Suspension steel cable, 7. Balance frame positioning steel cable, 8. Side plate hanger, 9. Hanger connecting plate, 10. Side plate retracting steel cable, 11. Balance frame positioning lifting point, 12. Through pipe, 13. Opening mechanism, 14. Side plate retracting steel cable lifting point, 15. Spring mechanism.

[0010] Figure 2 In the middle: 7. Balancing frame positioning steel cable, 11. Balancing frame positioning lifting point, 15. Spring mechanism, 21. Side plate fixing hinge, 22. Front column, 23. Frame crossbar, 24. Frame diagonal brace, 25. Pulley, 26. Connecting frame, 27. Short crossbar, 28. Spring fixing plate, 29. Rear column.

[0011] Figure 3 In the middle: 31. Rear plate, 32. Rear plate hanger, 33. Bracket hinge, 34. Lower roller, 35. Movable bracket, 36. Adjustable foot, 37. Caster, 38. Lock, 39. Anti-slip foot.

[0012] Figure 4 In the middle: 3. Positioning hook, 4. Suspension hook, 8. Side plate hanger, 9. Hanger connecting plate, 12. Through pipe.

[0013] Figure 5 In the middle: 51, bearing housing; 52, support rod; 53, support rod hinge seat; 54, eye bolt; 55, tie rod; 56, limit rod. Detailed Implementation

[0014] The embodiments of the present invention will be further described below with reference to the accompanying drawings: Figure 1 The diagram shows the structure of the side plate mounted on the side plate balance frame.

[0015] The side panel (1) is mounted on a fixed hinge (21) on the side panel balance frame (2) via a hinge. An opening mechanism (13) is installed under the side panel (1). The side panel (1) is made of two aluminum honeycomb panels. The aluminum honeycomb panel is made of an aluminum inner frame, aluminum honeycomb, inner panel and outer panel bonded together. The two sides of the aluminum inner frame are continuous aluminum square tubes, with several crossbeams welded in the middle. In order to improve the strength, a continuous steel through-tube (12) is installed inside the aluminum square tubes on both sides of the aluminum inner frame, which runs through the two panels, and then fixed with screws so that the through-tube (12) and the side panel (1) form a whole. A connecting plate is also installed at the connection of the two panels to connect the inner panels of the two panels together. The side panel hanger (8) is fixed to the two through-tubes (12) via a hanger connecting plate (9). The side panel hanger (8) is a rectangular square tube, with a suspension buckle (4) installed near the hinge side and a positioning buckle (3) installed on its outer side. The function of the side plate hanger (8) is to reduce the stress on the side plate suspension parts. The side plate hanger (8) is not limited to using rectangular tubes, but can also be made of steel pipes welded into a truss structure. Two additional diagonal braces from the side plate hanger (8) to the edge of the side plate (1) can be installed on the side plate hanger (8) to increase the safety of the side plate suspension. A balance frame positioning point (11) is installed on the rear column of the side plate balance frame (2). A positioning cable (5) is installed on the positioning hook (3), and a balance frame positioning cable (7) is installed on the balance frame positioning point (11). The upper ends of the positioning cable (5) and the balance frame positioning cable (7) are respectively connected to three positioning take-up devices on the top of the grid. When the side plate (1) descends to the limit position of the positioning take-up device, the positioning cable suspends the side plate (1) and makes its bottom surface parallel to the floor. Suspension cables (6) are installed on the suspension buckle (4). Side panel retracting cable suspension points (14) are installed on the lower part of the outer side of the side panel (1). Side panel retracting cables (10) are installed on the side panel retracting cable suspension points (14). The suspension cables (6) and the side panel retracting cables (10) are fixed on the stage rigging. When the stage rigging rises, the side panel retracting cables (10) tighten first, pulling the side panel (1) to fold it up. Then the suspension cables (6) also begin to tighten. Under the action of these four cables, the side panel (1) is lifted up. The suspension buckle (4) can also be installed on the side panel balance frame (2) instead of the rigging frame (8). The position is on the front column (22) or on the frame crossbar (23), but it must be close to the front column (22).

[0016] Figure 2 The diagram shown is a schematic of the side plate balance frame structure.

[0017] The side plate balance frame (2) is a sheet-like frame structure, welded together from a front column (22), a frame crossbar (23), a frame diagonal brace (24), a rear column (29), a connecting frame (26), and a short crossbar (27). A spring mechanism (15) for the opening mechanism (13) is installed at the bottom of the frame, with the spring of the spring mechanism (15) hooked onto a spring fixing plate (28). The spring fixing plate (28) is a perforated steel plate welded between the front column (22) and the lowest frame diagonal brace. In addition to fixing the spring, the spring fixing plate (28) also serves as a reinforcing rib of the frame. Since the spring mechanism (15) is relatively long, it needs to pass through the lowest frame crossbar, which is composed of a connecting frame (26) and a short crossbar (27). The connecting frame (26) is a metal frame with an inner diameter larger than the outer diameter of the spring mechanism (15), with one end fixed to the front column (22) and the other end fixed to the short crossbar (27). A pulley (25) is also installed on the frame. The function of the pulley (25) is to turn the steel wire rope that pulls the opening mechanism (13). A balance frame positioning point (11) is installed on the upper end of the rear column (29). The balance frame positioning point (11) is used to install the balance frame positioning steel cable (7). The position of the balance frame positioning point (11) must be equal to or higher than the position of the positioning buckle (3). When the position of the balance frame positioning point (11) is equal to the position of the positioning buckle (3), the bottom surface of the side plate (1) is always parallel to the ground during the process of falling to open. If the position of the balance frame positioning point (11) is lower than the position of the positioning buckle (3), the side plate (1) will tilt after falling to the bottom, and the outer end of the side plate (1) may touch the floor. The spring mechanism (15) consists of a tension spring, a spring sleeve and two steel wire ropes. The lower end of the tension spring is fixed on the spring fixing plate (28), and the upper end is connected to two steel wire ropes. One steel wire rope is fixed to the hanging rod, and the other steel wire rope passes around the pulley (25) and is connected to the eye bolt (54) of the side plate opening mechanism (13).

[0018] Figure 3The diagram shows the structure of the movable support bracket for the rear panel. The movable support bracket (35) is a triangular metal bracket welded from metal rods. The front vertical rod of the movable support bracket (35) is hinged to the bracket hinge (33) on the rear panel (31). The bottom surface of the movable support bracket (35) is basically flush with the bottom surface of the rear panel (31). When the movable support bracket (35) is opened, the rear panel (31) can stand vertically on the floor. The bottom surface of the rear panel (31) is equipped with lower rollers (34), and the bottom surface of the movable support bracket (35) is equipped with casters (37). The rear panel (31) can be moved back and forth using the lower rollers (34) and casters (37). The lower rollers (34) installed on the bottom surface of the rear panel (31) are relatively wide to reduce pressure and prevent damage to the floor. Therefore, the rollers (34) can be a single roller or multiple ordinary casters arranged in parallel. The bracket hinges (33) on the rear plate (31) are coaxially mounted and hinged to the front vertical rod of the movable bracket (35). The movable bracket (35) can be folded to a position close to the rear plate (31) and can be locked with a latch (38) to prevent the rear plate (31) from colliding with other equipment when it is lifted. The latch (38) is used to lock the movable bracket (35), and it can be in various forms, or even just tied to the rear plate (31) with a single rope. The bracket (35) is used to allow the rear plate (31) to stand upright and move back and forth after it is placed on the ground. Therefore, the movable bracket (35) is not limited to being triangular; it can also be a square frame or other shapes. The lower part of the movable bracket (35) is also equipped with adjustable feet (36). When the rear plate (31) is moved to the appropriate position, the adjustable feet (36) are used to position the rear plate (31). The adjustable foot (36) consists of a foot cup with a screw and two wing nuts. The screw of the foot cup passes through the crossbar under the sliding bracket (35) and is then fixed with the wing nuts. Adjusting the wing nuts can adjust the height of the adjustable foot (36). The function of the adjustable foot (36) is to position the back plate (31). Other positioning methods can be used. A back plate hanger (32) is installed on the upper part of the back of the back plate (31). The back plate hanger (32) is a steel beam with both ends fixed to the back plate. The back plate suspension wire rope is installed on the hanger (32). When the soundproof cover is retracted, the suspension wire rope lifts the back plate through the back plate hanger (32). When the back plate lands, the suspension wire rope can hold the back plate to prevent it from tilting forward. Two anti-slip feet (39) are also installed under the back plate (31). The anti-slip feet (39) are triangular brackets with rubber or polyurethane soft material wrapped around the front end. When the back plate (31) tilts forward, it will slide backward because it is pulled by the sling above. The function of the anti-slip foot (39) is to increase the frictional resistance and prevent the back plate (31) from sliding backward.The bottom surface of the anti-slip foot (39) is slightly higher than the lower roller (34), and the front end protrudes forward from the lower roller (34). When the rear plate (31) is upright, it does not hinder the movement of the rear plate (31). When the rear plate (31) tilts forward, the front end of the anti-slip bracket (39) will touch the ground to prevent the rear plate (31) from sliding. The anti-slip foot (39) can also be a rod-shaped structure or other structure that can prevent the rear plate (31) from sliding when it tilts forward. The structure of the rear plate (31) is the same as that of the side plate, except that the length is different. It is also made of two plates spliced ​​together, and the connection is fixed with a connecting plate. Through tubes are also installed in the frames on both sides.

[0019] Figure 4 This is a schematic diagram of a side panel hanger structure. The side panel hanger (8) is a rectangular square tube with screw holes at both ends, on which positioning hooks (3) and suspension hooks (4) are installed. The side panel hanger (8) is connected to the through tube (12) through the hanger connecting plate (9). The through tube (12) passes through the square tube of the aluminum inner frame of the side panel, and the side panel (1) and the through tube (12) are fixed together with screws. The through tube (12) has screw holes at the top for connecting the hanger connecting plate (9). The hanger connecting plate (9) is a rectangular steel plate with a bend. The bend angle allows the hanger connecting plate (9), the through tube (12), and the side panel hanger (8) to fit tightly together. The screw holes on the hanger connecting plate (9) are elongated holes. The center of gravity of the side panel suspension can be finely adjusted by adjusting the position of the bolts in the elongated holes. The function of the side panel hanger is to reduce the local stress generated by the side panel suspension parts and improve the safety of the suspension. The side plate hangers can also be made into a truss structure by welding thinner metal rods instead of using rectangular square tubes.

[0020] Figure 5 This is a schematic diagram of the side panel opening mechanism. A lifting eye screw (54) is installed in the middle of the pull rod (55), and a support rod hinge seat (53) is installed at each end. One end of the two support rods (52) is installed on the support rod hinge seat (53) through a pin, and the other end is hinged to the bearing seat (51), which is installed on the side panel (1). The spring drive of the spring mechanism (15) drives the steel wire rope that passes over the pulley (25) to pull the lifting eye screw (54), thereby pulling the pull rod (55). The pull rod (55) drives the support rod (52) to push the side panel open. Two limit rods (56) are also installed below the pull rod (55). The limit rods (56) are locked on the adjacent frame crossbar (23) on the balance frame and can slide back and forth. Their function is to keep the pull rod (55) in the middle position during the opening process and open the side panel smoothly. The limiting rod can be a square tube, or other materials can be used, or rollers can be added to the limiting rod to reduce frictional resistance.

[0021] Figure 5This is a schematic diagram of the side panel opening mechanism. A lifting eye screw (54) is installed in the middle of the pull rod (55), and a support rod hinge seat (53) is installed at each end. One end of the two support rods (52) is installed on the support rod hinge seat (53) through a pin, and the other end is hinged to the bearing seat (51), which is installed on the side panel (1). The spring drive of the spring mechanism (15) drives the steel wire rope that passes over the pulley (25) to pull the lifting eye screw (54), thereby pulling the pull rod (55). The pull rod (55) drives the support rod (52) to push the side panel open. Two limit rods (56) are also installed below the pull rod (55). The limit rods (56) are locked on the adjacent frame crossbar (23) on the balance frame and can slide back and forth. Their function is to keep the pull rod (55) in the middle position during the opening process and open the side panel smoothly. The limiting rod can be a square tube, or other materials can be used, or rollers can be added to the limiting rod to reduce frictional resistance.

Claims

1. A sound-reflecting shield structure, characterized in that: The upper side panel with a hanger is hinged to a side panel balance frame with a suspension point. The balance frame is equipped with pulleys and a spring mechanism. The side panel has a side panel opening mechanism. The rear panel is equipped with a movable bracket with casters and adjustable feet. The movable bracket can be opened and can be locked in place after folding. A through steel pipe is installed inside the aluminum square tubes on both sides of the aluminum inner frame of the aluminum honeycomb panel. The side panel is fixed to the through steel pipe with screws. The hanger is installed on the through pipe.

2. The acoustic shield structure according to claim 1, characterized in that: The side plate balance frame is a sheet-like frame structure, welded together from front columns, rear columns, several crossbars, diagonal braces, and other members. The front column of the side plate balance frame is a rectangular square tube with a fixed hinge installed on it for mounting the side plate. A lifting point is installed at the upper end of the rear column of the side plate balance frame, and the height of this lifting point is equal to or higher than the lifting point on the side plate.

3. The acoustic shield structure according to claim 1, characterized in that: A perforated spring fixing plate is welded to the front upright of the side panel and the bottommost diagonal brace. The holes on this plate are used to fix the tension spring of the spring mechanism and also serve as a reinforcing rib. The crossbar through which the spring mechanism passes consists of a connecting frame and short crossbars. The connecting frame is a metal frame with an inner diameter approximately equal to the outer diameter of the spring mechanism, and the spring mechanism frame is located within it. One end of the connecting frame is fixed to the front post and the other end is fixed to the short crossbar; the connecting frame can also be made into a circle or other shapes.

4. The acoustic shield structure according to claim 1, characterized in that: A hanger is installed on the upper part of the side plate. The hanger has bolt holes at both ends and is connected to the through steel pipe through a connecting plate. The connecting plate is a rectangular plate with a bend. The bend angle allows the connecting plate to fit well with the hanger and the through steel pipe. The connecting plate is connected to the hanger with bolts. The bolt holes on the plate are elongated holes. The hanger can be made of rectangular square tubes or thinner metal rods to form a truss structure.

5. The acoustic shield structure according to claim 1, characterized in that: The support rod of the opening mechanism is connected to the side plate using a bearing seat. The support rod is hinged to the bearing seat, and the bearing seat is fixed to the side plate. Two limit rods are installed at the lower end of the tie rod. The limit rods are locked on the frame crossbar and can slide along the frame crossbar. The limit rods are made of square tubes, but are not limited to square tubes. Round tubes or other solid materials can be used.

6. The acoustic shield structure according to claim 1, characterized in that: The movable bracket installed on the rear panel is a triangular metal bracket welded from metal rods. The bracket is hinged to the rear panel, and the rear panel can stand upright when the bracket is opened. Adjustable feet and casters are installed under the bracket. The function of the metal bracket is to enable the rear panel to stand upright. Therefore, the metal bracket is not limited to a triangle and can be other types of frames.

7. The acoustic shield structure according to claim 1, characterized in that: The bottom of the rear panel is equipped with rollers. The purpose of the rollers is to allow the rear panel to move back and forth after it is placed on the ground, and the pressure of the rollers on the bottom surface should be minimized. Therefore, the rollers can be a single roller or multiple ordinary casters arranged in parallel. The upper part of the rear panel is also equipped with a rear panel hanger. The two ends of the rear panel hanger are fixed to the rear panel, and the suspension steel cable is installed on the rear panel hanger.

8. The acoustic shield structure according to claim 1, characterized in that: The bottom of the rear panel is equipped with anti-slip feet. The anti-slip feet are triangular in shape or a rod, with the front end covered by a soft material such as rubber or polyurethane. The front end protrudes forward past the lower roller, and the bottom surface is slightly higher than the ground.

9. The acoustic shield structure according to claim 1, characterized in that: The aluminum honeycomb panel used to make the soundproof cover is made of an inner panel, an outer panel, an aluminum honeycomb, and an aluminum inner frame bonded together. The aluminum inner frame has continuous aluminum square tubes on both sides and several crossbeams welded in the middle. The whole panel is curved, and when the panel width is 1500mm, the radius of the inner panel arc is about 4000mm.

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