Composite sound absorbing board

Abstract

The present invention relates to a composite sound-absorbing board, comprising an embedded seat and a sound-absorbing board body vertically fixed on the upper end of the embedded seat; the sound-absorbing board body comprises two sound-absorbing covers arranged in mirror symmetry; the two sound-absorbing covers are opened on one side facing each other; the middle parts of the two sound-absorbing covers are surrounded to form a sound-absorbing cavity; a plurality of transversely penetrating sound-absorbing holes are arranged on the side walls of the sound-absorbing covers; a vertical sound-absorbing material is arranged in the sound-absorbing cavity; the upper and lower ends of the sound-absorbing material are respectively connected to the sound-absorbing board body through a fixing mechanism; a plurality of transversely penetrating receiving grooves are arranged on the sound-absorbing material; a sinking platform is arranged on the wall surface of the receiving groove on either side of the sound-absorbing material; a sound-absorbing block is hinged to the sound-absorbing material; the sound-absorbing block can close and cover the sinking platform; sound-absorbing cotton is fixed on the inner wall surface of the sound-absorbing block; a baffle is arranged in the receiving groove; one end of a tension spring is fixed to the baffle, and the other end is fixed to the sound-absorbing block after passing through the sound-absorbing cotton; the tension spring provides a pulling force to pull the sound-absorbing block toward the baffle.

Description

Technical Field

[0001] The invention relates to a composite sound-absorbing board, belonging to the technical field of sound insulation barriers. Background Art

[0002] With the development of highways, high-speed railways, urban subways and other transportation lines, the speed of vehicles and trains is getting faster and faster, and the noise generated has an increasingly serious impact on the lives of residents on both sides of the line. Therefore, sound-absorbing panels are usually installed on both sides of the transportation line to reduce the impact of noise on the surrounding environment.

[0003] The Chinese utility model patent "Lightweight and high-strength metal ceramic composite sound-absorbing board" with the authorization announcement number CN204097894U discloses a lightweight and high-strength metal ceramic composite sound-absorbing board, which is mainly composed of a main support structure and an internal sound-absorbing structure. The main sound-absorbing structure is composed of a metal panel, a back panel and a keel. The panel and the back panel are connected by a keel, wherein the panel is punched and the keel is formed by welding; the internal sound-absorbing structure is composed of a sound-absorbing material and a cavity formed between the sound-absorbing material and the back panel. The main sound-absorbing structure is made of steel plate, which is stronger than most sound-absorbing boards that use aluminum plates as support materials. The sound-absorbing material uses foam ceramics, which has high strength, light weight, is not easy to corrode, age, break, and is non-toxic and pollution-free. The cavity reflects the sound energy that has not been fully converted in the foam ceramic back into the foam ceramic for further conversion, so it has stronger sound absorption performance than other metal sound-absorbing boards, and the sound absorption and noise reduction effect is also more obvious.

[0004] However, the above-mentioned ceramic composite sound-absorbing board still has the following shortcomings: when encountering strong winds, if the wind enters the cavity through the sound-absorbing holes, it is easy for the wind to form a strong vortex inside the cavity, impacting the inner wall of the cavity, which can easily cause the sound-absorbing board to tilt and collapse, shortening its service life. Summary of the invention

[0005] In order to overcome the above problems, the present invention provides a composite sound-absorbing board. After the wind enters the sound-absorbing cavity inside the sound-absorbing board body, the sound-absorbing material of the composite sound-absorbing board is rotated by the sound-absorbing block to overcome the pulling force of the tension spring to open the sinking platform originally closed by the sound-absorbing block, so that the wind passes through the receiving groove and the sound-absorbing hole and is blown to the other side of the sound-absorbing board body, which can alleviate the impact of the wind on the sound-absorbing board body, avoid the sound-absorbing board body from tipping over, improve the wind resistance of the sound-absorbing board body, and extend the service life.

[0006] The technical solution of the present invention is as follows:

[0007] A composite sound-absorbing board, comprising an embedded seat and a sound-absorbing board body vertically fixed to the upper end of the embedded seat; the sound-absorbing board body comprises two sound-absorbing covers arranged in mirror symmetry; the two sound-absorbing covers are openly arranged facing one side; the middle parts of the two sound-absorbing covers are surrounded to form a sound-absorbing cavity; a plurality of transversely penetrating sound-absorbing holes are arranged on the side wall of the sound-absorbing cover; a vertical sound-absorbing material is arranged in the sound-absorbing cavity; the upper and lower ends of the sound-absorbing material are respectively connected to the sound-absorbing board body through a fixing mechanism; the sound-absorbing material is provided with a plurality of transversely penetrating receiving grooves; a sinking platform is arranged on the wall surface of either side of the sound-absorbing material; a sound-absorbing block is hinged to the sound-absorbing material; the sound-absorbing block can close and cover the sinking platform; sound-absorbing cotton is fixed on the inner wall surface of the sound-absorbing block; a baffle is arranged in the receiving groove; one end of a tension spring is fixed to the baffle, and the other end is fixed to the sound-absorbing block after passing through the sound-absorbing cotton; the tension spring provides tension to pull the sound-absorbing block toward the baffle.

[0008] Furthermore, the upper and lower parts of the side walls of one side of the sound-absorbing material are respectively provided with mounting grooves; the opening of the mounting groove is arranged toward one of the sound-absorbing cover; the fixing mechanism is located in the mounting groove; the fixing mechanism includes a compression spring, a slider, a fixing column, a push plate and a fixing plate; the slider is movably arranged in the mounting groove; the slider is close to the end surface of one end of the sound-absorbing cover to vertically fix a plurality of the fixing columns; at least one fixing column is correspondingly arranged on each of the sound-absorbing cover; the inner top and inner bottom of the sound-absorbing cover are provided with a clamping groove for clamping the fixing column; the fixing plate covers and fixes the open end of the mounting groove; the fixing plate is provided with a horizontally penetrating strip groove; the horizontal push plate is fixed on the slide The outside of the block; the outside of the push plate passes through the strip groove; the compression spring is vertically arranged in the installation groove; the two ends of the compression spring are respectively fixed to the slider and the installation groove; the compression spring provides elastic force to press the fixing column into the slot; two vertical limit plates are respectively fixed to the inner top and inner bottom of the sound absorbing cover opposite to the opening of the installation groove; the sound absorbing material is attached to the limit plates; a vertically through first threaded hole is provided at the top of the sound absorbing cover facing the opening of the installation groove, and a vertically through sealing screw hole is provided at the bottom; the first threaded hole and the sealing screw hole are respectively located directly above and directly below the push plate; the first threaded hole is closed by a screw; the sealing screw hole is closed by a sealing screw.

[0009] Furthermore, the embedded seat includes a base and a fixing groove opened at the upper end of the base; the lower end of the sound absorbing board body is fixed in the fixing groove; after a fixing screw passes through the side wall of the fixing groove, the end is fixed on the sound absorbing board body.

[0010] Furthermore, the sinks of two adjacent containing grooves on the sound absorbing material are respectively located on two sides of the sound absorbing material.

[0011] Furthermore, it also includes a sealing seat; the sealing seat sleeve is arranged on the outer side of the bottom of the sound absorbing board body; the sealing seat cover is arranged above the embedded seat.

[0012] Furthermore, it also includes a sealing cover; the sealing cover is arranged on the upper end of the sound absorbing board body; a second threaded hole is opened on the top of the sound absorbing cover opposite to the opening of the installation groove; after the lower end of the cover screw passes through the sealing cover, the end is fixed to the first threaded hole or the second threaded hole.

[0013] Furthermore, it also includes a sealing ring; the sealing ring is sleeved on the outside of the cover screw; the lower end of the sealing ring is tightly attached to the upper end of the sealing cover.

[0014] Furthermore, it also includes a connecting mechanism; the connecting mechanism is vertically evenly spaced in multiple groups; the connecting mechanism includes a connecting protrusion and a connecting sleeve; the connecting protrusion is fixed at one end of the sound absorbing board body, and the connecting sleeve is opened at the other end of the sound absorbing board body; two adjacent sound absorbing board bodies are fixed by the connecting protrusion and the connecting sleeve.

[0015] Furthermore, on the same end of the same sound absorbing panel body, the connecting protrusions and connecting sleeves of two adjacent groups of the connecting mechanisms are arranged alternately.

[0016] Furthermore, it also includes a sound insulation board; the sound insulation board is fixed to the end of the sound absorbing cover; the outer end surface of the sound insulation board is flush with the outer end surface of the sound absorbing cover.

[0017] The present invention has the following beneficial effects:

[0018] 1. After the wind enters the sound absorbing cavity inside the sound absorbing board body, the sound absorbing block overcomes the pulling force of the tension spring and rotates to open the sink originally closed by the sound absorbing block, so that the wind passes through the receiving groove and the sound absorbing hole and is blown to the other side of the sound absorbing board body, which can alleviate the impact of the wind on the sound absorbing board body, avoid the sound absorbing board body from tipping over, improve the wind resistance of the sound absorbing board body, and extend the service life.

[0019] 2. Unscrew the fixing screws, pull the damaged sound absorbing board body upward to make it disengage from the fixing groove, and separate the connecting mechanism of the damaged sound absorbing board body from the connecting mechanisms of the two adjacent intact sound absorbing board bodies, and then separate the damaged sound absorbing board body from the whole, and then re-insert the new sound absorbing board body into the fixing groove of the original installation position to fix it, so as to realize the disassembly and replacement of the sound absorbing board body.

[0020] 3. Use a stick-like tool to pass through the first threaded hole or the sealing screw hole and enter the sound absorbing cavity, then push the push plate to move toward the center, the fixed column will be separated from the slot, and then pull the sound absorbing cover to both sides, the two sound absorbing covers will also be separated, and the sound absorbing material can be taken out at this time, which greatly facilitates the disassembly and replacement of the sound absorbing material.

[0021] 4. The connecting protrusions and the connecting grooves on the connecting sleeves are slidably matched. Through the cooperation of multiple connecting sleeves and multiple connecting protrusions, it is convenient to splice the sound-absorbing panel body, and the installation process is simple and convenient, which improves the efficiency of the installation of the sound-absorbing panel body. In addition, the staggered connecting protrusions and connecting sleeves can balance the force relationship between two adjacent sound-absorbing panel bodies, which is convenient for improving the service life of the sound-absorbing panel body.

[0022] 5. The staggered arrangement of the sinks of two adjacent receiving grooves on the sound-absorbing material can ensure sound absorption while balancing the influence of wind on both sides of the sound-absorbing material, improving force impact and improving wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0025] Figure 3 for Figure 2 A partial enlarged view of point A.

[0026] Figure 4 for Figure 2 A local enlarged view of point B.

[0027] Figure 5 for Figure 2 A partial enlarged view of point C.

[0028] Figure 6 for Figure 3 A local enlarged view of point D.

[0029] Figure 7 It is a top view of the present invention.

[0030] Figure 8 for Figure 7 A local enlarged view of point E.

[0031] The reference numerals in the figure are as follows:

[0032] 1. Embedded seat; 11. Base; 12. Fixing groove; 13. Fixing screw; 14. Rebar; 2. Sound-absorbing board body; 21. Sound-absorbing cover; 211. Sound-absorbing hole; 212. Limiting plate; 213. First threaded hole; 214. Second threaded hole; 215. Slot; 216. Sealing screw hole; 217. Sealing screw; 218. Rotating groove; 22. Sound-absorbing cavity; 23. Sound insulation board; 24. Sealing seat; 25. Sealing cover; 26. Cover screw; 27. Sealing ring; 3. Sound-absorbing material; 31. Mounting groove; 32. Accommodating groove; 33. Sinking platform; 34. Sound-absorbing block; 35. Sound-absorbing cotton; 36. Tension spring; 37. Baffle; 38. Hinge; 4. Fixing mechanism; 41. Compression spring; 42. Slider; 43. Fixed column; 44. Push plate; 45. Fixed plate; 46. Strip groove; 47. Fastening screw; 5. Connecting mechanism; 51. Connecting protrusion; 52. Connecting sleeve; 53. Rubber strip. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] See also Figure 1-8 A composite sound-absorbing board is arranged on the side of a road, comprising an embedded seat 1 and a sound-absorbing board body 2 vertically fixed to the upper end of the embedded seat 1; the sound-absorbing board body 2 comprises two sound-absorbing covers 21 arranged in mirror symmetry; the two sound-absorbing covers 21 are opened to one side; the middle parts of the two sound-absorbing covers 21 are surrounded to form a sound-absorbing cavity 22; a plurality of transverse sound-absorbing holes 211 are provided on the side wall of the sound-absorbing cover 21; a vertical sound-absorbing material 3 is arranged in the sound-absorbing cavity 22; the upper and lower ends of the sound-absorbing material 3 are respectively connected to the sound-absorbing board body 2 through a fixing mechanism 4; the sound-absorbing material The material 3 is provided with a plurality of transversely penetrating receiving grooves 32; a sink 33 is provided on the wall surface of the receiving groove 32 on either side of the sound-absorbing material 3; a sound-absorbing block 34 is hinged to the sound-absorbing material 3; the sound-absorbing block 34 can close and cover the sink 33; a sound-absorbing cotton 35 is fixed on the inner wall surface of the sound-absorbing block 34; a baffle 37 is arranged in the receiving groove 32; a tension spring 36 is fixed at one end to the baffle 37, and the other end is fixed to the sound-absorbing block 34 after passing through the sound-absorbing cotton 35; the tension spring 36 provides a pulling force to pull the sound-absorbing block 34 toward the baffle 37.

[0035] According to the above description, the composite sound absorbing board mainly includes an embedded seat 1, a sound absorbing board body 2, a sound absorbing material 3 and a fixing mechanism 4. The embedded seat 1 plays a fixing role and is fixed to the road. The sound absorbing board body 2 is fixed on the embedded seat 1, and the main body is two sound absorbing covers 21, and a hollow sound absorbing cavity 22 is formed between the two sound absorbing covers 21, and the sound absorbing material 3 is installed in the sound absorbing cavity 22. Sound absorbing holes 211 connected to the sound absorbing cavity 22 are provided on the side wall of the sound absorbing cover 21. The sound absorbing material 3 is fixed in the sound absorbing board body 2 by the fixing mechanism 4. A receiving groove 32 is provided on the sound absorbing material 3, and one side is connected to a sinking platform 33 provided on the wall surface of the sound absorbing material 3. The sound absorbing block 34 hinged on the sound absorbing material 3 can close and cover the sinking platform 33 to form a seal. Sound absorbing cotton 35 is fixed on the inner side of the sound absorbing block 34, and the sound absorbing cotton 35 is filled between the sound absorbing block 34 and the sinking platform 33, which can improve the sound absorption effect. A baffle 37 is provided in the receiving groove 32, and the baffle 37 and the sound absorbing block 34 are connected by a tension spring 36. The sound absorbing block 34 can be pulled to cover the sink 33 by the tension spring 36 to seal the receiving groove 32, thereby preventing noise from passing through the receiving groove 32.

[0036] In addition, when encountering strong winds, after part of the wind enters the sound absorbing cavity 22 inside the sound absorbing board body 2 through the sound absorbing holes 211, the wind will cause the sound absorbing block 34 in the corresponding direction to overcome the pulling force of the tension spring 36 and rotate, and the sink 33 originally closed by the sound absorbing block 34 will open, and the wind can be blown to the other side of the sound absorbing board body 2 through the accommodating groove 32 and the sound absorbing holes 211, which can alleviate the impact of the wind on the sound absorbing board body 2, prevent the sound absorbing board body 2 from tipping over, improve the wind resistance of the sound absorbing board body 2, and extend the service life.

[0037] Particularly, the sound absorbing material 3 is foam tile.

[0038] In particular, the sound absorbing block 34 is connected to the sound absorbing material 3 via a hinge 38 .

[0039] In particular, the tension spring 36 is arranged away from the connection between the sound absorbing block 34 and the sound absorbing material 3 .

[0040] Furthermore, the upper and lower parts of the side wall of the sound absorbing material 3 are respectively provided with mounting grooves 31; the opening of the mounting groove 31 is arranged toward the sound absorbing cover 21; the fixing mechanism 4 is located in the mounting groove 31; the fixing mechanism 4 It includes a compression spring 41, a slider 42, a fixing column 43, a push plate 44 and a fixing plate 45; the slider 42 is movably arranged in the installation groove 31; the slider 42 is vertically fixed with a plurality of fixing columns 43 on the end surface of one end of the sound absorbing cover 21; at least one fixing column 43 is correspondingly arranged on each sound absorbing cover 21; the inner top and inner bottom of the sound absorbing cover 21 are both provided with a card slot 215 for engaging the fixing column 43; the fixing plate 45 covers and is fixed to the open end of the installation groove 31; a horizontally penetrating strip groove 46 is provided on the fixing plate 45; the horizontal push plate 44 is fixed to the outer side of the slider 42; the outer side of the push plate 44 passes through the strip groove 46; the compression spring 41 is vertically arranged in the installation groove 31 ; The two ends of the compression spring 41 are respectively fixed to the slider 42 and the mounting slot 31; the compression spring 41 provides elastic force to press the fixing column 43 into the slot 215; two vertical limit plates 212 are respectively fixed to the inner top and inner bottom of the sound absorbing cover 21 opposite to the opening of the mounting slot 31; the sound absorbing material 3 is attached to the limit plates 212; a vertically through first threaded hole 213 is provided at the top of the sound absorbing cover 21 toward which the opening of the mounting slot 31 is facing, and a vertically through sealing screw hole 216 is provided at the bottom; the first threaded hole 213 and the sealing screw hole 216 are respectively located directly above and directly below the push plate 44; the first threaded hole 213 is closed by a screw; the sealing screw hole 216 is closed by a sealing screw 217.

[0041] According to the above description, the inner top and the inner bottom of the sound absorbing cover 21 opposite to the opening of the installation groove 31 are fixed with a limit plate 212, which plays a role in limiting the sound absorbing material 3, so as to limit the installation of the sound absorbing material 3. The upper and lower parts of the side of the sound absorbing material 3 are provided with installation grooves 31 for installing the fixing mechanism 4. The fixing mechanism 4 mainly includes a compression spring 41, a slider 42, a fixing column 43, a push plate 44 and a fixing plate 45. A slider 42 is slidably arranged in the installation groove 31. A compression spring 41 is arranged between the slider 42 and the installation groove 31, and the compression spring 41 pushes the slider 42 toward the sound absorbing cover 21. A horizontal push plate 44 is fixed on the outside of the slider 42. At least two fixing columns 43 are fixed on the slider 42, and at least one fixing column 43 is correspondingly arranged on each of the two sound absorbing covers 21 on the same sound absorbing board body 2. The top and bottom of the inner side of the sound absorbing cover 21 are both provided with a slot 215 that engages with the fixing column 43. The slider 42 is pushed by the compression spring 41, and the fixing column 43 on the slider 42 passes through the sound absorbing material 3 and can be inserted into the slot 215 of the sound absorbing cover 21, so that the sound absorbing material 3 is fixedly connected to the sound absorbing board body 2. The fixing plate 45 covers and is fixed to the open end of the installation groove 31 to prevent the slider 42 and the compression spring 41 from falling out; after removing the fixing plate 45, the slider 42 and the compression spring 41 can be assembled or replaced. The fixing plate 45 is provided with a strip groove 46, and the outer side of the push plate 44 passes through the strip groove 46 and the push plate 44 and the strip groove 46 are slidably matched. Then, by pushing the push plate 44 to displace the slider 42, the fixing column 43 can be separated from the slot 215, so that the sound absorbing material 3 can be disassembled, and the first threaded hole 213 and the sealing screw hole 216 are used to insert the tool from the outside into the sound absorbing cavity 22 to push the push plate 44. Through a tool similar to a stick, after passing through the first threaded hole 213 or the sealing screw hole 216, enter the sound absorbing cavity 22, and then forcefully push the push plate 44 to move toward the center, the fixing column 43 will be separated from the slot 215, and then the sound absorbing cover 21 is pulled to both sides, and the two sound absorbing covers 21 will also be separated, and the sound absorbing material 3 can be taken out at this time, thereby greatly facilitating the disassembly and replacement of the sound absorbing material 3. The first threaded hole 213 and the sealing screw hole 216 are sealed by corresponding screws, which can be sealed and waterproof.

[0042] In particular, the opening direction of the mounting groove 31 is preferably arranged toward the road.

[0043] Particularly, the fixing plate 45 is fixed to the sound absorbing material 3 by means of fastening screws 47 .

[0044] Particularly, a plurality of mounting grooves 31 are evenly spaced along the length direction of the sound absorbing material 3 , and the fixing mechanism 4 , the limiting plate 212 , the first threaded hole 213 , the sealing screw hole 216 , and the sealing screw 217 are matched therewith.

[0045] In particular, the plurality of sliders 42 on the same side may be respectively fixed to a push plate 44 , or may be fixed to the same push plate 44 .

[0046] In particular, since the sealing screw 217 needs to be immersed in the sealing screw hole 216 , a rotation groove 218 is provided at the bottom of the sealing screw 217 to facilitate rotating the sealing screw 217 .

[0047] Furthermore, the embedded seat 1 includes a base 11 and a fixing groove 12 provided at the upper end of the base 11; the lower end of the sound absorbing board body 2 is fixed in the fixing groove 12; a fixing screw 13 passes through the side wall of the fixing groove 12, and the end is fixed to the sound absorbing board body 2. The fixing screw 13 can be used to detachably fix the sound absorbing board body 2 and the embedded seat 1, so that the sound absorbing board body 2 can be replaced later.

[0048] In particular, a plurality of steel bars 14 are transversely fixed to the lower portion of the base 11 so as to fix the embedded seat 1 to the road.

[0049] Furthermore, the sinks 33 of the two adjacent receiving grooves 32 on the sound absorbing material 3 are respectively located on both sides of the sound absorbing material 3. The sinks 33 of the two adjacent receiving grooves 32 on the sound absorbing material 3 are staggered, which can ensure sound absorption while balancing the influence of wind force on both sides of the sound absorbing material 3, improving force impact and improving wind resistance.

[0050] Furthermore, a sealing seat 24 is included; the sealing seat 24 is sleeved on the outside of the bottom of the sound absorbing board body 2; the sealing seat 24 is covered above the embedded seat 1. The sealing seat 24 is covered above the embedded seat 1 to prevent rainwater from entering the fixing groove 12.

[0051] Furthermore, it also includes a sealing cover 25; the sealing cover 25 is set on the upper end of the sound absorbing board body 2; a second threaded hole 214 is opened on the top of the sound absorbing cover 21 opposite to the opening of the installation groove 31; after the lower end of the cover screw 26 passes through the sealing cover 25, the end is fixed to the first threaded hole 213 or the second threaded hole 214. The sealing cover 25 is set on the upper end of the sound absorbing board body 2, mainly for waterproofing. After installation, the sealing covers 25 on the upper ends of the two adjacent sound absorbing board bodies 2 are in close contact with each other to form a seal, which can prevent rainwater from entering the sound absorbing cavity 22 through the connection between the two sealing covers 25.

[0052] In particular, the sealing cover 25 is a stage-shaped structure with a small top and a large bottom, which is conducive to waterproofing and drainage. The lower end of the sealing cover 25 is flush with or exceeds the outer side of the sound absorbing cover 21 and the sound insulation board 23, so as to further improve the waterproofing and drainage effects.

[0053] Furthermore, a sealing ring 27 is included; the sealing ring 27 is sleeved on the outer side of the cover screw 26; the lower end of the sealing ring 27 is in close contact with the upper end of the sealing cover 25. The sealing ring 27 can improve the sealing between the cover screw 26 and the sealing cover 25 to prevent rainwater from entering the sound absorption cavity 22.

[0054] Furthermore, it also includes a connecting mechanism 5; the connecting mechanism 5 is vertically evenly spaced in multiple groups; the connecting mechanism 5 includes a connecting protrusion 51 and a connecting sleeve 52; the connecting protrusion 51 is fixed at one end of the sound absorbing board body 2, and the connecting sleeve 52 is opened at the other end of the sound absorbing board body 2; two adjacent sound absorbing board bodies 2 are fixed by the connecting protrusion 51 and the connecting sleeve 52. The connecting protrusion 51 is slidably matched with the connecting groove on the connecting sleeve 52, and the sound absorbing board body 2 is conveniently spliced ​​through the cooperation of multiple connecting sleeves 52 and multiple connecting protrusions 51, and the installation process is simple and convenient, which improves the efficiency of the installation of the sound absorbing board body 2.

[0055] Particularly, the connection protrusion 51 is T-shaped, with its head facing outwards; and the connection sleeve 52 is concave-shaped so as to be snap-fitted with the T-shaped connection protrusion 51 .

[0056] Furthermore, on the same end of the same sound absorbing panel body 2, the connecting protrusions 51 and connecting sleeves 52 of two adjacent groups of the connecting mechanisms 5 are arranged alternately. The alternately arranged connecting protrusions 51 and connecting sleeves 52 can balance the force relationship between the two adjacent sound absorbing panel bodies 2, thereby facilitating the improvement of the service life of the sound absorbing panel body 2.

[0057] In particular, a plurality of rubber strips 53 are fixed in the connecting sleeve 52, and the rubber strips 53 are arranged close to the connecting protrusion 51. The rubber strips 53 are arranged between the connecting protrusion 51 and the connecting sleeve 52 to achieve a shock absorbing effect, so as to increase the service life of the connecting protrusion 51 and the connecting sleeve 52.

[0058] Furthermore, it also includes a sound insulation board 23; the sound insulation board 23 is fixed to the end of the sound absorbing cover 21; the outer end surface of the sound insulation board 23 is flush with the outer end surface of the sound absorbing cover 21. The sound insulation board 23 is used to soundproof the connection mechanism 5 between the two sound absorbing board bodies 2 to improve the overall sound insulation effect.

[0059] Particularly, the sound insulation board 23 is flush with the end of the connecting sleeve 52 , and the inner end surface is attached to the outer end surface of the connecting sleeve 52 .

[0060] In particular, the sound insulation board 23 is preferably arranged on the side close to the road.

[0061] Working principle of the present invention:

[0062] See also Figure 1-8When the composite sound absorbing board is used, if the sound absorbing board body 2 is found to be damaged, first unscrew the fixing screws 13 corresponding to the damaged sound absorbing board body 2, and then pull the damaged sound absorbing board body 2 upward to make it disengage from the fixing groove 12; continue to pull the damaged sound absorbing board body 2 upward to separate the connecting mechanism 5 of the damaged sound absorbing board body 2 from the connecting mechanisms 5 of the two adjacent intact sound absorbing board bodies 2; then move the damaged sound absorbing board body 2 toward the outside to separate the damaged sound absorbing board body 2 from the whole; then install a new sound absorbing board body 2 to the corresponding position of the original damaged sound absorbing board body 2, align the connecting mechanism 5 of the new sound absorbing board body 2 with the adjacent sound absorbing board body 2, push the new sound absorbing board body 2 downward until its lower end enters the fixing groove 12, and after confirming that the connecting mechanism 5 of the new sound absorbing board body 2 with the adjacent sound absorbing board body 2 is fixed, tighten the corresponding fixing screws 13 to fix the new sound absorbing board body 2.

[0063] When the composite sound-absorbing board is in use, if the sound-absorbing material 3 is found to be damaged, after the above-mentioned step of separating the sound-absorbing board body 2, the cover screw 26 (sealing screw 217) is unscrewed, and the stick is inserted into the first threaded hole 213 (sealing screw hole 216) and then enters the sound-absorbing cavity 22, and then the push plate 44 is pushed to move toward the center, so that the fixing column 43 will be separated from the slot 215; then the stick is fixed to keep the fixing column 43 separated from the slot 215, and then the sound-absorbing cover 21 is pulled to both sides, and the two sound-absorbing covers 21 will also be separated, and the sound-absorbing material 3 can be taken out at this time, and the stick is removed; then a new sound-absorbing material 3 is put into the sound-absorbing cover 21 and fits it. Place the sound absorbing cover 21 on the limit plate 212; then put another sound absorbing cover 21 on the outside of the sound absorbing material 3, and keep the two sound absorbing covers 21 aligned, and align the first threaded hole 213 (sealed screw hole 216) and the push plate 44; then extend the stick into the first threaded hole 213 (sealed screw hole 216), and push the push plate 44 to ensure that the fixing column 43 does not exceed the end surface of the sound absorbing material 3; finally, push the sound absorbing cover 21 to make the two sound absorbing covers 21 close together, and then pull the stick out of the first threaded hole 213 (sealed screw hole 216), and then push the slider 42 through the compression spring 41 to insert the fixing column 43 into the card slot 215 to achieve the fixation of the sound absorbing material 3 and the sound absorbing board body 2. After the sound absorbing material 3 is replaced, the sound absorbing board body 2 is inserted into the fixing slot 12 for fixation.

[0064] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A composite sound-absorbing panel, characterized in that: The invention comprises an embedded seat (1) and a sound absorbing board body (2) vertically fixed to the upper end of the embedded seat (1); the sound absorbing board body (2) comprises two sound absorbing covers (21) arranged in mirror symmetry; the two sound absorbing covers (21) are arranged to be open to one side facing each other; the middle parts of the two sound absorbing covers (21) are surrounded to form a sound absorbing cavity (22); a plurality of transversely penetrating sound absorbing holes (211) are provided on the side walls of the sound absorbing covers (21); a vertical sound absorbing material (3) is provided in the sound absorbing cavity (22); the upper and lower ends of the sound absorbing material (3) are respectively connected to the sound absorbing board body (2) through a fixing mechanism (4); the sound absorbing material (3) is provided with a plurality of transversely penetrating sound absorbing holes (211) for accommodating the sound absorbing holes (211) and the sound absorbing holes (211) for accommodating the sound absorbing holes (211); a vertical sound absorbing material (3) is provided in the sound absorbing cavity (22); the upper and lower ends of the sound absorbing material (3) are respectively connected to the sound absorbing board body (2) through a fixing mechanism (4); the sound absorbing material (3) is provided with a plurality of transversely penetrating sound absorbing holes (211) for accommodating the sound absorbing holes (211) and the ...) The receiving groove (32) is provided with a sink (33) on the wall surface of either side of the sound absorbing material (3); a sound absorbing block (34) is hingedly connected to the sound absorbing material (3); the sound absorbing block (34) can close and cover the sink (33); sound absorbing cotton (35) is fixed on the inner wall surface of the sound absorbing block (34); a baffle (37) is arranged in the receiving groove (32); a tension spring (36) is fixed at one end to the baffle (37), and the other end passes through the sound absorbing cotton (35) and is fixed to the sound absorbing block (34); the tension spring (36) provides a pulling force to pull the sound absorbing block (34) toward the baffle (37); The upper and lower parts of the side wall of one side of the sound absorbing material (3) are respectively provided with mounting grooves (31); the opening of the mounting groove (31) is arranged toward the sound absorbing cover (21); the fixing mechanism (4) is located in the mounting groove (31); the fixing mechanism (4) comprises a compression spring (41), a slider (42), a fixing column (43), a push plate (44) and a fixing plate (45); the slider (42) is movably arranged in the mounting groove (31); the slider (42) is close to the sound absorbing cover ( A plurality of fixing columns (43) are vertically fixed on one end surface of the sound absorbing cover (21); at least one fixing column (43) is correspondingly arranged on each of the sound absorbing covers (21); a clamping groove (215) for clamping the fixing column (43) is provided on the inner top and the inner bottom of the sound absorbing cover (21); the fixing plate (45) covers and is fixed to the open end of the mounting groove (31); a horizontally penetrating strip groove (46) is provided on the fixing plate (45); the horizontal push plate (44) is fixed on the outer side of the slider (42) side; the outer side of the push plate (44) passes through the strip groove (46); the compression spring (41) is vertically arranged in the installation groove (31); the two ends of the compression spring (41) are respectively fixed to the slider (42) and the installation groove (31); the compression spring (41) provides elastic force to press the fixing column (43) into the card groove (215); two vertical limit plates (212) are respectively fixed to the inner top and inner bottom of the sound absorbing cover (21) opposite to the opening of the installation groove (31); the sound absorbing material The material (3) is attached to the limiting plate (212); the top of the sound absorbing cover (21) toward which the installation groove (31) opens is provided with a vertically extending first threaded hole (213), and the bottom is provided with a vertically extending sealing screw hole (216); the first threaded hole (213) and the sealing screw hole (216) are respectively located directly above and directly below the push plate (44); the first threaded hole (213) is closed by a screw; and the sealing screw hole (216) is closed by a sealing screw (217); The two adjacent containing grooves (32) on the sound absorbing material (3) have sinks (33) located on two sides of the sound absorbing material (3) respectively.

2. The composite sound absorbing panel according to claim 1, characterized in that: The embedded seat (1) comprises a base (11) and a fixing groove (12) provided at the upper end of the base (11); the lower end of the sound absorbing board body (2) is fixed in the fixing groove (12); and a fixing screw (13) passes through the side wall of the fixing groove (12) and the end thereof is fixed on the sound absorbing board body (2).

3. The composite sound absorbing panel according to claim 1, characterized in that: It also comprises a sealing seat (24); the sealing seat (24) is sleeved on the outside of the bottom of the sound absorbing plate body (2); the sealing seat (24) is covered above the embedded seat (1).

4. The composite sound absorbing board according to claim 1, characterized in that: It also includes a sealing cover (25); the sealing cover (25) is arranged on the upper end of the sound absorbing plate body (2); a second threaded hole (214) is provided on the top of the sound absorbing cover (21) opposite to the opening of the mounting groove (31); after the lower end of the cover screw (26) passes through the sealing cover (25), the end thereof is fixed to the first threaded hole (213) or the second threaded hole (214).

5. The composite sound absorbing board according to claim 4, characterized in that: It also includes a sealing ring (27); the sealing ring (27) is sleeved on the outside of the cover screw (26); the lower end of the sealing ring (27) is tightly attached to the upper end of the sealing cover (25).

6. The composite sound absorbing board according to claim 1, characterized in that: The invention also comprises a connecting mechanism (5); a plurality of connecting mechanisms (5) are arranged vertically and evenly spaced; the connecting mechanism (5) comprises a connecting protrusion (51) and a connecting sleeve (52); the connecting protrusion (51) is fixed to one end of the sound absorbing panel body (2), and the connecting sleeve (52) is opened at the other end of the sound absorbing panel body (2); two adjacent sound absorbing panel bodies (2) are fixed by means of the connecting protrusion (51) and the connecting sleeve (52).

7. The composite sound absorbing board according to claim 6, characterized in that: On the same end of the same sound absorbing panel body (2), the connecting protrusions (51) and connecting sleeves (52) of two adjacent groups of the connecting mechanisms (5) are arranged alternately.

8. The composite sound absorbing panel according to claim 1, characterized in that: It also comprises a sound insulation board (23); the sound insulation board (23) is fixed to the end of the sound absorbing cover (21); the outer end surface of the sound insulation board (23) is flush with the outer end surface of the sound absorbing cover (21).

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