Sound reflecting cover structure

Abstract

The utility model 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 balance 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] The sound reflector is also called sound reflection cover, music cover, sound reflection board, music sound reflector, acoustic reflection cover, and anti-sound cover. The sound reflector is used to create a better natural acoustic environment for live music performance in an opera house. The sound reflector is a stage device arranged in front of a main stage. BACKGROUND

[0002] The sound reflector is composed of a top plate, side plates, and a back plate. The sound reflector is usually made of aluminum plate or plastic plate. The top plate of the sound reflector is usually made into a foldable structure, which is folded and placed on a special vehicle when not in use, and is hung on a stage suspension when in use. There is also a suspended sound reflector, which is suspended on the upper part of the stage when not in use, and is automatically unfolded when the top plate of the suspension is lowered, and the side plates are manually opened. Since the suspension point of the side plate when opened is on the hinge shaft of the side plate, the outer end of the side plate will fall on the ground, although there are casters at the falling point, but due to the large load, the floor is easily damaged. In addition, manual opening is not very convenient. SUMMARY

[0003] The suspended sound reflector solves the automatic opening of the top plate, but the side plate still needs to be manually opened. In order to solve this problem, a plate opening spring mechanism is installed on the side plate, which opens the side plate by using the spring force after the side plate falls to the bottom. The side plate with a hanger is installed on a side plate balance frame with a suspension point through a hinge, the balance frame is installed with a pulley and a spring mechanism, and the side plate is installed with a side plate opening mechanism; the back plate is installed with a movable support with casters and adjusting legs, the movable support can be opened, and the movable support can be fixed by using a lock after being folded; an aluminum inner frame of the aluminum honeycomb plate is installed with a through steel pipe on both sides of the aluminum square tube, and the side plate and the through steel pipe are fixed together by screws, and the hanger is installed on the through pipe.

[0004] When the side plate falls to the limit position of the positioning sling, but has not been opened, the outer edge of the side plate will fall to the ground. In order to prevent the side plate from touching the ground during unfolding, a balance frame is used to install the side plate on the balance frame through a hinge. The side plate balance frame is a sheet-shaped frame structure, which is welded by front columns, rear columns, several horizontal rods, and diagonal bracing rods. The front column of the side plate balance frame is a rectangular square tube, which is installed with a fixed hinge for installing the side plate. A suspension point is installed on the upper end of the rear column of the side plate balance frame, and the height of the suspension point is equal to or higher than the suspension point on the side plate.

[0005] In order to make the side plate open easily, the positioning sling of the side plate is installed on the side plate hanger, and the rear end of the balance frame is also installed with a positioning sling. The two positioning slings of the side plate and the positioning sling of the rear end of the balance frame are the same length, and the three positioning slings make the bottom surface of the side plate parallel to the ground at any position. A hanger is installed on the upper part of the side plate, both ends of the hanger are provided with bolt holes, and the hanger is connected to the through steel pipe through a connecting plate; the connecting plate is a rectangular plate with a bending angle, and the bending angle makes the connecting plate well fit the hanger and the through steel pipe; the connecting plate is connected to the hanger by bolts, and the screw holes on the upper part are long holes; the hanger is made of a rectangular square tube or a truss structure made of a relatively thin metal rod.

[0006] A spring fixing plate with holes is welded below the front vertical column of the side plate and the lowermost diagonal support rod, which is used to fix the tension spring of the spring mechanism and also plays the role of a reinforcing plate; the cross bar through which the spring mechanism passes is composed of a connecting frame and a short cross bar, and the connecting frame is a metal frame with an inner diameter larger than the outer diameter of the spring mechanism, and the spring mechanism is boxed therein, and one end of the connecting frame is fixed on the front vertical column and the other end is fixed on the short cross bar.

[0007] A bearing seat is used at the connection between the support rod of the opening plate mechanism and the side plate, the support rod is hinged on the bearing seat, and the bearing seat is fixed on the side plate; two limiting rods are installed at the lower end of the pull rod, the limiting rods are clamped on the frame cross bar and can slide along the frame cross bar; the limiting rods are made of square tubes or round tubes.

[0008] In addition, the depth of the sound reflection cover can be adjusted, and large depth corresponds to large orchestra, and small depth corresponds to small orchestra, so that different orchestras arranged in the sound reflection cover will be more coordinated. In order to adjust the depth of the sound reflection cover, a movable support is added to the rear plate of the sound reflection cover, and a roller is installed on the bottom surface of the rear plate. After the rear plate is placed on the ground, the support is opened, and the rear plate is pushed to the appropriate position. The hanger on the rear plate is installed on the upper part of the rear plate, and the hanger cable pulls the rear plate hanger to prevent the rear plate from falling forward after the rear plate is placed on the ground, so that counterweight does not need to be installed on the rear plate support. The movable support installed on the rear plate is a triangular metal support welded by metal rods, and the support is hinged on the rear plate. When the support is opened, the rear plate can stand vertically. The adjusting legs and support casters are installed below the support.

[0009] The bottom surface of the rear plate is provided with a roller, and the purpose of the roller is to enable the rear plate to move forward and backward after being placed on the ground, and the wheel pressure on the bottom surface is required to be as small as possible. Therefore, the roller can be a roller or a plurality of ordinary casters arranged in parallel. The rear plate hanger is also installed on the upper part of the rear plate, both ends of the rear plate hanger are fixed on the rear plate, and the suspension cable is installed on the rear plate hanger.

[0010] Anti-skid legs are installed on the bottom surface of the rear plate, and the shape of the anti-skid legs is a triangle, or a rod, and the front end is a rubber or polyurethane material head. The front end protrudes forward beyond the roller, and the bottom surface is slightly higher than the ground.

[0011] The aluminum honeycomb plate of the anti-sound cover is made of inner plate, outer plate, aluminum honeycomb and aluminum inner frame; the aluminum inner frame has aluminum square tubes on both sides and several cross beams welded in the middle; the whole plate is arc-shaped, and when the plate width is 1500mm, the inner plate arc radius is about 4000mm. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structure diagram of the side plate mounted on the side plate balance frame.

[0013] Figure 2 is a structure diagram of the side plate balance frame.

[0014] Figure 3 is a structure diagram of the rear plate mounted with the movable support.

[0015] Figure 4 is a structure diagram of the side plate hanger.

[0016] Figure 5 is a structure diagram of the side plate opening mechanism.

[0017] Figure 1 In the figure: 1, side plate, 2, side plate balance frame, 3, positioning lifting buckle, 4, suspension lifting buckle, 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 folding steel cable, 11, balance frame positioning lifting point, 12, through pipe, 13, opening mechanism, 14, side plate folding steel cable lifting point, 15, spring mechanism.

[0018] Figure 2 In the figure: 7, balance frame positioning steel cable, 11, balance frame positioning lifting point, 15, spring mechanism, 21, side plate fixed hinge, 22, front stand, 23, frame crossbar, 24, frame diagonal brace, 25, pulley, 26, connecting frame, 27, short crossbar, 28, spring fixing plate, 29, rear stand.

[0019] Figure 3 In the figure: 31, rear plate, 32, rear plate hanger, 33, support hinge, 34, lower roller, 35, movable support, 36, adjusting foot, 37, caster, 38, lock buckle, 39, anti-skid foot.

[0020] Figure 4 In the figure: 3, positioning lifting buckle, 4, suspension lifting buckle, 8, side plate hanger, 9, hanger connecting plate, 12, through pipe.

[0021] Figure 5 In the figure: 51, bearing seat, 52, support rod, 53, support rod hinge seat, 54, lifting ring screw, 55, pull rod, 56, limiting rod. DETAILED DESCRIPTION

[0022] The embodiments of the present application are further illustrated below with reference to the accompanying drawings:

[0023] Figure 1 The structure diagram of the side plate installed on the side plate balance frame is shown.

[0024] The side plate (1) is installed on the fixed hinge (21) of the side plate balance frame (2) through the hinge. The open plate mechanism (13) is installed on the lower side of the side plate (1). The side plate (1) is spliced by two aluminum honeycomb plates. The aluminum honeycomb plate is formed by the aluminum inner frame, aluminum honeycomb, inner plate and outer plate. The two sides of the aluminum inner frame are the aluminum square tubes with a length, and several cross beams are welded in the middle. In order to improve the strength, a steel through pipe (12) with a length is installed in the inside of the aluminum square tubes on both sides of the aluminum inner frame, and then fixed by screws, so that the through pipe (12) and the side plate (1) form a whole. A connecting plate is also installed at the connection of the two plates to connect the inner plates of the two plates together. The side plate hanger (8) is fixed on the two through pipes (12) through the hanger connecting plate (9). The side plate hanger (8) is a rectangular square tube, and the suspension hook (4) is installed on the side close to the hinge, and the positioning hook (3) is installed on the outside. The function of the side plate hanger (8) is to reduce the stress of the side plate suspension parts, and the side plate hanger (8) is not limited to the rectangular tube, but also can be a steel pipe welded into a truss structure. Two inclined braces from the side plate hanger (8) to the edge of the side plate (1) can also be installed on the side plate hanger (8) to increase the safety of the side plate suspension. A balance frame positioning lifting point (11) is installed on the rear upright column of the side plate balance frame (2). The positioning steel cable (5) is installed on the positioning hook (3), and the balance frame positioning steel cable (7) is installed on the balance frame positioning lifting point (11). The upper ends of the positioning steel cable (5) and the balance frame positioning steel cable (7) are respectively connected to three positioning winches on the top of the grid. When the side plate (1) is lowered to the extreme position of the positioning winch, the positioning steel cable makes the side plate (1) hover, and the bottom surface is parallel to the floor. The suspension steel cable (6) is installed on the suspension hook (4), and the side plate folding steel cable lifting point (14) is installed on the lower part of the outside of the side plate (1). The side plate folding steel cable (10) is installed on the side plate folding steel cable lifting point (14), and the suspension steel cable (6) and the side plate folding steel cable (10) are fixed on the stage lifting rod. When the stage lifting rod rises, the side plate folding steel cable (10) is first tightened, pulls the side plate (1), and then the suspension steel cable (6) is also tightened, and the side plate (1) is lifted up under the action of the four steel cables. The suspension hook (4) can also be installed on the side plate balance frame (2) instead of the hanger (8), and the position is on the front upright column (22) or on the frame cross bar (23), but close to the front upright column (22).

[0025] Figure 2 The structure diagram of the side plate balance frame is shown.

[0026] The side plate balance frame (2) is a sheet-like frame structure, which is welded by a front vertical column (22), a frame horizontal rod (23), a frame diagonal brace (24), a rear vertical column (29), a connecting frame (26) and a short horizontal rod (27). A spring mechanism (15) for the side plate opening mechanism (13) is installed at the lower part of the frame, and the spring of the spring mechanism (15) is hooked on a spring fixing plate (28). The spring fixing plate (28) is a steel plate with a hole, which is welded between the front vertical column (22) and the lowermost frame diagonal brace. The spring fixing plate (28) not only fixes the spring, but also plays the role of a reinforcing plate of the frame. Because the spring mechanism (15) is relatively long, it needs to pass through the lowermost frame horizontal rod, which is composed of a connecting frame (26) and a short horizontal rod (27). The connecting frame (26) is a metal frame with an inner diameter larger than the outer diameter of the spring mechanism (15), which is fixed at one end on the front vertical column (22) and at the other end on the short horizontal rod (27). A pulley (25) is also installed on the frame, which functions to change the direction of the steel wire rope for pulling the side plate opening mechanism (13). The upper end of the rear vertical column (29) is provided with a balance frame positioning lifting point (11), which is used to install a balance frame positioning steel cable (7). The position of the balance frame positioning lifting point (11) should be equal to or higher than that of the positioning lifting buckle (3). When the position of the balance frame positioning lifting point (11) is equal to that of the positioning lifting buckle (3), the bottom surface of the side plate (1) is always parallel to the ground during the process of falling and opening. If the position of the balance frame positioning lifting point (11) is lower than that of the positioning lifting buckle (3), the side plate (1) will be inclined after falling to the bottom, which may cause the outer end of the side plate (1) to hit the floor. The spring mechanism (15) is composed 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 of which is fixed to the lifting rod, and the other of which is connected to the lifting ring screw (54) of the side plate opening mechanism (13) through the pulley (25).

[0027] Figure 3The figure shows the structure of the rear plate mounting movable support. The rear plate movable support (35) is a triangular metal support welded with metal rods. The front vertical rod of the movable support (35) is hinged to the support hinge (33) on the rear plate (31). The bottom surface of the movable support (35) is basically flush with the bottom surface of the rear plate (31). When the movable support (35) is opened, the rear plate (31) can be vertically erected on the floor. The bottom surface of the rear plate (31) is mounted with the lower roller (34), and the lower surface of the movable support (35) is mounted with the caster (37). The rear plate (31) can be moved forward and backward by using the lower roller (34) and the caster (37). The lower roller (34) mounted on the bottom surface of the rear plate (31) is relatively wide, which is to reduce the pressure to prevent damage to the floor. Therefore, the roller (34) can be a roller or multiple ordinary casters arranged side by side. The support hinge (33) on the rear plate (31) is coaxially installed up and down and is hinged to the front vertical rod of the movable support (35) up and down. The movable support (35) can be folded to the position close to the rear plate (31) and can be locked by using the lock buckle (38) to lock the movable support (35), so that the rear plate (31) will not collide with other equipment when it is lifted. The function of the lock buckle (38) is to lock the movable support (35), which can have multiple forms of selection, and even only one rope can be used to tie the movable support (35) on the rear plate (31). The function of the support (35) is to enable the rear plate (31) to be vertically erected and moved forward and backward after falling on the ground. Therefore, the movable support (35) is not limited to being triangular, but can also be a square frame or other shapes. The lower part of the movable support (35) is also mounted with the adjusting support foot (36). When the rear plate (31) is moved to the appropriate position, the adjusting support foot (36) is used to position the rear plate (31). The adjusting support foot (36) is composed of a foot cup with a screw rod and two butterfly nuts. The screw rod of the foot cup passes through the horizontal rod below the sliding support (35), and then is fixed by using the butterfly nut. The height of the adjusting support foot (36) can be adjusted by adjusting the butterfly nut. The function of the adjusting support foot (36) is to position the rear plate (31), and other forms of positioning methods can be used. The upper part of the back of the rear plate (31) is mounted with the rear plate hanger (32), which is a steel beam fixed at both ends of the rear plate. The suspension wire rope of the rear plate is mounted on the hanger (32). When the reflector is retracted, the suspension wire rope lifts the rear plate through the rear plate hanger (32). When the rear plate falls to the ground, the suspension wire rope can pull the rear plate to prevent it from falling forward. Two anti-skid feet (39) are also mounted below the rear plate (31). The anti-skid foot (39) is a triangular support with a rubber or polyurethane soft material head at the front end. When the rear plate (31) falls forward, the upper part is pulled by the sling, and the lower part will slide backward. The function of the anti-skid foot (39) is to increase the friction resistance to prevent the rear plate (31) from sliding backward.The bottom of the anti-skid foot (39) is slightly higher than the lower roller (34), and the front end protrudes forward of the lower roller (34). When the rear plate (31) is erected, the anti-skid foot (39) does not hinder the movement of the rear plate (31). When the rear plate (31) is tilted forward, the front end of the anti-skid foot (39) touches the ground to prevent the rear plate (31) from sliding. The anti-skid foot (39) can also be a rod structure or other structure that can prevent sliding when the rear plate (31) is tilted forward. The rear plate (31) has the same structure as the side plate, except that the length is different. It is also composed of two plates connected by a connecting plate. The through pipe is also installed in the frame on both sides.

[0028] Figure 4 A side plate hanger structure schematic diagram is shown. The side plate hanger (8) is a rectangular tube with screw holes at both ends, on which a positioning hanger (3) and a suspension hanger (4) are installed. The side plate hanger (8) is connected to the through pipe (12) through the hanger connecting plate (9), and the through pipe (12) is inserted into the square tube of the aluminum inner frame of the side plate (1). The side plate (1) and the through pipe (12) are fixed together with screws. The upper part of the through pipe (12) has screw holes for connecting the hanger connecting plate (9). The hanger connecting plate (9) is a rectangular steel plate with a bend. The angle of the bend allows the hanger connecting plate (9) to closely fit the through pipe (12) and the side plate hanger (8). The screw holes on the upper part of the hanger connecting plate (9) are long holes. By adjusting the position of the bolt in the long hole, the suspension center of gravity of the side plate can be fine-tuned. The function of the side plate hanger is to reduce the local stress generated by the suspension parts of the side plate and improve the safety of the suspension. The side plate hanger can also be made of thinner metal rods welded into a truss structure instead of a rectangular tube.

[0029] Figure 5 A side plate opening mechanism structure schematic diagram is shown. A hanger screw (54) is installed in the middle of the pull rod (55), and a support rod hinge seat (53) is installed at both ends. Two support rods (52) are installed at one end through a pin shaft in the support rod hinge seat (53), and the other end is hinged to the bearing seat (51), which is installed on the side plate (1). The spring drive of the spring mechanism (15) pulls the hanger screw (54) through the steel wire rope around the pulley (25), thereby pulling the pull rod (55). The pull rod (55) drives the support rod (52) to push the side plate open. Two limit rods (56) are also installed below the pull rod (55). The limit rods (56) are clamped on the adjacent frame crossbars (23) of the balance frame and can slide forward and backward. The function is to keep the pull rod (55) in the middle position during the opening process and open the side plate smoothly. The limit rods can be square tubes or other materials, or rollers can be added to the limit rods to reduce friction resistance.

Claims

1. A retrodirective reflector structure, characterized by: The side plate with the hanger is hinged to a side plate balance frame with a lifting point, the balance frame is provided with a pulley and a spring mechanism, and the side plate is provided with a side plate opening mechanism; the rear plate is provided with a movable support with casters and adjustable legs, the movable support can be opened, and the movable support can be fixed by using a lock after being folded; a through steel pipe is arranged in the aluminum square tube on both sides of the aluminum inner frame of the aluminum honeycomb plate, and the side plate and the through steel pipe are fixed by using screws, and the hanger is arranged on the through pipe.

2. The retro-trap structure of claim 1, wherein: The side plate balance frame is a sheet-shaped frame structure which is welded by a front column, a rear column, a plurality of horizontal rods and inclined support rods; the front column of the side plate balance frame is a rectangular square tube, and a fixed hinge is arranged on the front column and used for mounting the side plate; a lifting point is arranged on the upper end of the rear column of the side plate balance frame, and the height of the lifting point is equal to or higher than the lifting point on the side plate.

3. The retro-trap structure of claim 1, wherein: A spring fixing plate with a hole is welded below the front column of the side plate and the lowermost inclined support rod, the plate is used for fixing the tension spring of the spring mechanism and also plays a role of a reinforcing plate; the horizontal rod through which the spring mechanism passes is composed of a connecting frame and a short horizontal rod, the connecting frame is a metal frame with an inner diameter larger than the outer diameter of the spring mechanism, the spring mechanism is arranged in the connecting frame, and one end of the connecting frame is fixed to the front column and the other end is fixed to the short horizontal rod.

4. The retro-trap structure of claim 1, wherein: A hanger is arranged on the upper portion of the side plate, the hanger is provided with 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 bending portion, the bending angle is such that the connecting plate can be well matched with the hanger and the through steel pipe; the connecting plate is connected to the hanger by using bolts, and the screw holes on the connecting plate are long holes; the hanger is made of a rectangular metal rod in a truss structure.

5. The retro-trap structure of claim 1, wherein: A bearing seat is arranged at the connection between the support rod of the opening mechanism and the side plate, the support rod is hinged to the bearing seat, and the bearing seat is fixed to the side plate; two limiting rods are arranged at the lower end of the pull rod, the limiting rods are clamped to the frame horizontal rod and can slide along the frame horizontal rod; the limiting rods are made of square tubes or round tubes.

6. The retro-trap structure of claim 1, wherein: The movable support arranged on the rear plate is a triangular metal support welded by metal rods, the support is hinged to the rear plate, and the rear plate can be vertically erected when the support is opened; the support is provided with adjustable legs and support casters below.

7. The retro-trap structure of claim 1, wherein: Rollers are arranged on the bottom surface of the rear plate, the purpose of the rollers is to enable the rear plate to move forward and backward after falling to the ground, and the pressure of the rollers on the bottom surface is required to be as small as possible; therefore, the rollers can be a roller or a plurality of ordinary casters arranged in parallel; a rear plate hanger is further arranged on the upper portion of the rear plate, the rear plate hanger is fixed to the rear plate at both ends, and a suspension cable is arranged on the rear plate hanger.

8. The retro-trap structure of claim 1, wherein: Anti-skid legs are arranged on the bottom surface of the rear plate, the anti-skid legs are in the shape of a triangle or a rod, and the front end is a rubber or polyurethane material head; the front end protrudes forward beyond the roller, and the bottom surface is slightly higher than the ground.

9. The retro-trap structure of claim 1, wherein: The aluminum honeycomb plate for making the sound reflector is made of inner plates, outer plates, aluminum honeycombs and an aluminum inner frame; the aluminum inner frame is a through aluminum square tube, and several horizontal beams are welded in the middle; the whole plate is in the shape of an arc, and when the plate width is 1500 mm, the inner plate arc radius is about 4000 mm.

Images