阅读说明：本技术 一种具有高效吸声隔音功能的组合塑料板 (Combined plastic plate with efficient sound absorption and insulation functions ) 是由 刘运保 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种具有高效吸声隔音功能的组合塑料板,涉及塑料板技术领域。该具有高效吸声隔音功能的组合塑料板,包括板体,所述板体的内部开设有空腔,所述板体的一侧分别设置有圆槽和斜板,所述板体的另一侧设置有塑料盒,所述圆槽与空腔相连通,所述空腔的内壁固定连接有反射锥,所述空腔的内壁设置有消声件,所述板体表面靠近塑料盒的一侧分别固定连接有隔音条、插杆和隔音棉板,所述隔音棉板位于隔音条的内部。本发明通过设置空腔、消声件、隔音棉板、消声板和吸音棉板,通过空腔、消声件、隔音棉板、消声板和吸音棉板的配合,进行多次的吸音隔音,达到了提高板体吸声隔音能力的效果,从而提高板体吸声隔音的效率。(The invention discloses a combined plastic plate with efficient sound absorption and insulation functions, and relates to the technical field of plastic plates. This combination plastic slab with high-efficient sound absorption sound insulation function, which comprises a plate body, the cavity has been seted up to the inside of plate body, one side of plate body is provided with circular slot and swash plate respectively, the opposite side of plate body is provided with the plastics box, the circular slot is linked together with the cavity, the inner wall fixedly connected with reflection cone of cavity, the inner wall of cavity is provided with the noise elimination piece, one side difference fixedly connected with sound insulating strip, inserted bar and the soundproof cotton board that the plate body surface is close to the plastics box, the soundproof cotton board is located the inside of sound insulating strip. According to the invention, through the arrangement of the cavity, the noise elimination piece, the sound insulation cotton plate, the noise elimination plate and the sound absorption cotton plate, multiple times of sound absorption and sound insulation are carried out through the matching of the cavity, the noise elimination piece, the sound insulation cotton plate, the noise elimination plate and the sound absorption cotton plate, the effect of improving the sound absorption and sound insulation capability of the plate body is achieved, and the sound absorption and sound insulation efficiency of the plate body is improved.)

1. The utility model provides a combination plastic slab with high-efficient sound absorption sound insulation function, includes plate body (1), its characterized in that: the utility model discloses a sound insulation board, including plate body (1), cavity (2) have been seted up to the inside of plate body (1), one side of plate body (1) is provided with circular slot (3) and swash plate (4) respectively, the opposite side of plate body (1) is provided with plastic box (5), circular slot (3) are linked together with cavity (2), the inner wall fixedly connected with reflection cone (26) of cavity (2), the inner wall of cavity (2) is provided with noise elimination spare (6), one side that plate body (1) surface is close to plastic box (5) is fixedly connected with sound insulation strip (7), inserted bar (8) and sound insulation cotton board (9) respectively, sound insulation cotton board (9) are located the inside of sound insulation strip (7), sound insulation strip (7) fixed cover connects on the surface of inserted bar (8), the surface swing joint of the inner wall and sound insulation cotton board (9) of plastic box (5), the inside of plastic box (5) swing joint has sound insulation board (10) and sound insulation cotton board (11) respectively, the sound insulation board is characterized in that two sides of the sound insulation board (10) are respectively movably connected with opposite surfaces of the sound insulation cotton board (9) and the sound absorption cotton board (11), one side, close to the board body (1), of the surface of the plastic box (5) is provided with a slot (12), an insertion rod (8) is inserted into the slot (12), the surface of the plastic box (5) is provided with a square groove (13), the inner wall of the square groove (13) is movably connected with the surface of a square strip (14), one side, close to the sound insulation board (10), of the surface of the square strip (14) is respectively provided with a clamping rod (15) and a clamping mechanism (16), the surface of the insertion rod (8) is provided with a clamping groove (17), one side, close to the sound insulation board (10), of the inner wall of the slot (12) is provided with a square hole (18), one end, close to the square hole (18), of the clamping rod (15) penetrates through the plastic box (5) and, the surface of the clamping rod (15) is movably connected with the inner wall of the clamping groove (17), and a cavity (19) is formed in the plastic box (5).

2. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 1, wherein: the inner wall of the circular groove (3) is provided with an annular groove (20), the inner wall of the annular groove (20) is a curved surface, and the inner wall of the annular groove (20) is provided with a silencing groove (21).

3. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 2, wherein: the silencing groove (21) comprises an annular cavity (2101) and a through groove (2102), the annular cavity (2101) is arranged inside the plate body (1), the through groove (2102) is arranged on the inner wall of the annular groove (20), and the central axis of the annular cavity (2101) is overlapped with the central axis of the annular groove (20).

4. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 1, wherein: the noise elimination piece (6) comprises a noise elimination hole (601) and a cylindrical pin (602), the noise elimination hole (601) is formed in the inner wall of the cavity (2), one end of the cylindrical pin (602) is fixedly connected with the inner wall of the noise elimination hole (601), the other end of the cylindrical pin (602) is fixedly connected with a ball (603), the ball (603) is located inside the cavity (2), an arc-shaped groove (604) is formed in the surface of the cylindrical pin (602), and the arc-shaped groove (604) is located inside the noise elimination hole (601).

5. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 4, wherein: the surface of the cylindrical pin (602) is fixedly connected with a circular ring (22), the circular ring (22) is located inside the silencing hole (601), and the surface of the circular ring (22) is provided with a notch (23).

6. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 1, wherein: the utility model discloses a sound attenuation board, including muffler plate (10), the surface of square ring (1001) and the inner wall swing joint of plastics box (5), the both sides of square ring (1001) respectively with soundproof cotton board (9) and inhale the opposite face swing joint of sound cotton board (11), square plate (1002) fixed connection is at the inner wall of square ring (1001), through-hole (1003) have been seted up on the surface of square plate (1002), the inner wall fixedly connected with reflection bar (1004) of through-hole (1003).

7. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 6, wherein: the through hole (1003) is funnel-shaped, and the surface of the reflecting strip (1004) is an inclined plane.

8. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 1, wherein: the surface of the inserted bar (8) is fixedly sleeved with a sound insulation block (24), one side, close to the plate body (1), of the surface of the plastic box (5) is provided with a groove (25), the groove (25) is communicated with the slot (12), and the inner wall of the groove (25) is movably connected with the surface of the sound insulation block (24).

9. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 1, wherein: buckle mechanism (16) include snap ring (1601) and fixture block (1602), snap ring (1601) fixed connection is in square bar (14) surface near one side of anechoic board (10), card hole (1603) has been seted up to the inner wall of square groove (13), the inner wall of card hole (1603) and the surface swing joint of snap ring (1601), bayonet socket (1604) have been seted up to the side of card hole (1603) inner wall, the inner wall of bayonet socket (1604) and the surface swing joint of fixture block (1602).

10. The composite plastic panel with high sound absorption and insulation functions as claimed in claim 9, wherein: the inner wall of the bayonet (1604) is an inclined plane, and the shape of the clamping block (1602) is matched with that of the bayonet (1604).

Technical Field

The invention relates to the technical field of plastic plates, in particular to a combined plastic plate with efficient sound absorption and insulation functions.

Background

The plastic is a high molecular compound polymerized by addition polymerization or polycondensation reaction by using monomers as raw materials, and consists of synthetic resin, fillers, plasticizers, stabilizers, lubricants, pigments and other additives, the main component of the plastic is resin, a plate made of the plastic is a plastic plate, holes in a rigid polyurethane foam plastic plate in the plastic plate are mostly closed-cell structures, and the plastic plate has the characteristics of good heat insulation effect, sound absorption and insulation and shock resistance, and is mainly applied to the fields of refrigeration equipment, industrial equipment heat preservation, building materials, transportation and the like in the industries of food and the like.

Among the prior art, common rigid polyurethane foam plastic board is when using at present, and the hole in the rigid polyurethane foam plastic board is mostly closed cell structure, when carrying out the sound absorption and give sound insulation, only relies on the hole in the rigid polyurethane foam plastic board to carry out the sound absorption and give sound insulation, and the sound absorption mode that gives sound insulation is single, and the sound absorption sound insulation effect is relatively poor.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a combined plastic plate with high-efficiency sound absorption and insulation functions, and solves the problems that in the prior art, when the common rigid polyurethane foam plastic plate is used, sound absorption and insulation are carried out only by virtue of holes in the rigid polyurethane foam plastic plate, the sound absorption and insulation mode is single, and the sound absorption and insulation effect is poor.

In order to achieve the purpose, the invention is realized by the following technical scheme: a combined plastic board with high-efficiency sound absorption and insulation functions comprises a board body, wherein a cavity is formed in the board body, a round groove and an inclined plate are respectively arranged on one side of the board body, a plastic box is arranged on the other side of the board body, the round groove is communicated with the cavity, a reflection cone is fixedly connected to the inner wall of the cavity, a sound attenuation piece is arranged on the inner wall of the cavity, a sound insulation strip, an insertion rod and a sound insulation cotton board are respectively and fixedly connected to one side, close to the plastic box, of the surface of the board body, the sound insulation cotton board is located in the sound insulation strip, the sound insulation strip is fixedly sleeved on the surface of the insertion rod, the inner wall of the plastic box is movably connected with the surface of the sound insulation cotton board, a sound attenuation board and a sound absorption cotton board are respectively and movably connected to the inside of the plastic box, two sides of the sound attenuation board are respectively and movably connected with, the inserted bar is inserted into the slot, a square groove is formed in the surface of the plastic box, the inner wall of the square groove is movably connected with the surface of the square bar, a clamping bar and a buckling mechanism are respectively arranged on one side, close to the anechoic plate, of the surface of the square bar, a clamping groove is formed in the surface of the inserted bar, a square hole is formed in one side, close to the anechoic plate, of the inner wall of the slot, one end, close to the square hole, of the clamping bar penetrates through the plastic box and is movably connected with the inner wall of the square hole, the surface of the clamping bar is movably connected with the inner wall of the clamping groove, and a cavity is.

Furthermore, an annular groove is formed in the inner wall of the circular groove, the inner wall of the annular groove is a curved surface, and a silencing groove is formed in the inner wall of the annular groove.

Furthermore, the silencing groove comprises an annular cavity and a through groove, the annular cavity is formed in the plate body, the through groove is formed in the inner wall of the annular groove, and the central axis of the annular cavity coincides with the central axis of the annular groove.

Furthermore, the silencing piece comprises a silencing hole and a cylindrical pin, the silencing hole is formed in the inner wall of the cavity, one end of the cylindrical pin is fixedly connected with the inner wall of the silencing hole, the other end of the cylindrical pin is fixedly connected with a ball body, the ball body is located inside the cavity, an arc-shaped groove is formed in the surface of the cylindrical pin, and the arc-shaped groove is located inside the silencing hole.

Furthermore, the surface of the cylindrical pin is fixedly connected with a circular ring, the circular ring is located inside the silencing hole, and the surface of the circular ring is provided with a notch.

Further, the anechoic plate comprises a square ring and a square plate, the surface of the square ring is movably connected with the inner wall of the plastic box, the two sides of the square ring are respectively movably connected with the opposite surfaces of the soundproof cotton plate and the sound-absorbing cotton plate, the square plate is fixedly connected with the inner wall of the square ring, a through hole is formed in the surface of the square plate, and the inner wall of the through hole is fixedly connected with a reflection strip.

Furthermore, the through hole is funnel-shaped, and the surface of the reflection strip is an inclined plane.

Furthermore, the surface of the inserted bar is fixedly sleeved with a sound insulation block, one side of the surface of the plastic box, which is close to the plate body, is provided with a groove, the groove is communicated with the slot, and the inner wall of the groove is movably connected with the surface of the sound insulation block.

Further, buckle mechanism includes snap ring and fixture block, snap ring fixed connection is in the square strip surface near one side of anechoic board, the card hole has been seted up to the inner wall of square groove, the inner wall in card hole and the surface swing joint of snap ring, the bayonet socket has been seted up to the side of card hole inner wall, the inner wall of bayonet socket and the surface swing joint of fixture block.

Furthermore, the inner wall of the bayonet is an inclined plane, and the shape of the clamping block is matched with that of the bayonet.

The invention has the following beneficial effects:

1. the combined plastic board with the high-efficiency sound absorption and insulation functions comprises a cavity, a sound elimination piece, a sound insulation cotton board, a sound elimination board and a sound absorption cotton board, wherein the cavity is arranged inside the board body when the combined plastic board is used, the circular groove is communicated with the cavity, when sound is transmitted to the board body, the sound enters the cavity through the circular groove, the sound is reflected in the circular groove and the cavity under the action of the annular groove, the sound elimination groove, the cavity, the reflection cone and the sound elimination piece and is mutually superposed and collided, sound energy is converted into heat energy, sound absorption and insulation are carried out, the sound after sound absorption and insulation is transmitted to the position of the sound insulation cotton board through the board body, the sound is transmitted to the position of the sound elimination board after sound insulation by the sound insulation cotton board, the sound is contacted with the sound elimination board, the sound energy is reflected again under the action of the through hole on the sound elimination board and the inclined plane of the, then transmit again to inhale the cotton board position of sound and inhale the sound on the back transmission to the plastic case, the cavity is seted up inside the plastic case, make the plastic case form the cavity, once more give sound insulation, through the cavity, noise elimination spare, the cotton board gives sound insulation, the cooperation of noise elimination board and the cotton board of inhaling the sound, it gives sound insulation to carry out a lot of sound of inhaling, the effect that improves plate body sound absorption sound insulation ability has been reached, thereby improve the sound deadening efficiency of plate body sound absorption, in the prior art has been solved, present common rigid polyurethane foam board is when using, only rely on the hole in the rigid polyurethane foam board to carry out sound absorption sound insulation, sound absorption sound insulation mode is single, the relatively poor problem of sound absorption sound insulation.

2. This combination plastic slab with high-efficient sound absorption sound insulation function, through setting up the swash plate, when using, the quantity of swash plate is corresponding with the quantity of circular slot, and the swash plate and the circular slot of same position, the swash plate slope is fixed in the circular slot top, plays dustproof and rainproof effect to the circular slot, prevents effectively that dust and rainwater from getting into in circular slot and the cavity.

3. This combination plastic slab with high-efficient sound absorption sound insulation function through setting up sound insulation strip, when using, sound insulation strip is made by expanded rubber, and sound insulation strip separates plate body and plastic box and leaves, prevents that sound from passing through the direct transmission of plate body to plastic box on, further improves the sound-insulating ability of plate body and plastic box.

4. This combination plastic slab with high-efficient sound absorption sound insulation function, through setting up inserted bar, kelly and buckle mechanism, when using, when assembling plate body and plastic box, insert the inserted bar of plate body in the slot of plastic box, insert draw-in groove and square hole with the kelly on the square billet, block snap ring and the fixture block card of the buckle mechanism of square billet in the card hole, block square billet and kelly, make the kelly block the inserted bar, thereby couple together plate body and plastic box, make things convenient for the equipment of plate body and plastic box.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the structure of the present invention at the position of the plunger;

FIG. 3 is an enlarged view of the structure of FIG. 2;

FIG. 4 is a top cross-sectional view of the cavity of the present invention;

FIG. 5 is an enlarged view of the structure of the present invention at the location of the ball;

FIG. 6 is a left sectional view of the present invention taken at the jamming lever position;

FIG. 7 is an enlarged view of the structure of the present invention at the position of the clamping rod.

In the figure, 1, a plate body; 2. a cavity; 3. a circular groove; 4. a sloping plate; 5. a plastic case; 6. a muffler; 601. a sound-deadening aperture; 602. a cylindrical pin; 603. a sphere; 604. an arc-shaped slot; 7. a sound insulating strip; 8. inserting a rod; 9. a sound-insulating cotton sheet; 10. an acoustic panel; 1001. a square ring; 1002. a square plate; 1003. a through hole; 1004. a reflective strip; 11. a sound absorbing cotton plate; 12. a slot; 13. a square groove; 14. square bars; 15. a clamping rod; 16. a buckle mechanism; 1601. a snap ring; 1602. a clamping block; 1603. a clamping hole; 1604. a bayonet; 17. a card slot; 18. a square hole; 19. a cavity; 20. an annular groove; 21. a silencing groove; 2101. an annular cavity; 2102. a through groove; 22. a circular ring; 23. a groove is opened; 24. a sound insulation block; 25. a groove; 26. a reflecting cone.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-7, an embodiment of the present invention provides a technical solution: a combined plastic board with high-efficiency sound absorption and insulation functions comprises a board body 1, a cavity 2 is formed in the board body 1, the number of the cavities 2 is multiple, the number and the positions of circular grooves 3 correspond to those of the cavities 2, a circular groove 3 and an inclined plate 4 are respectively arranged on one side of the board body 1, the left side of the board body 1 is provided with the circular grooves 3, the number of the circular grooves 3 is multiple, the circular grooves 3 are uniformly distributed on the left side of the board body 1 at intervals, the inclined plate 4 is fixedly connected on the left side of the board body 1, a plastic box 5 is arranged on the other side of the board body 1, the plastic box 5 is used for placing a sound absorption cotton board 11, a sound absorption board 10 and a sound insulation cotton board 9, the circular grooves 3 are communicated with the cavity 2, a reflection cone 26 is fixedly connected on the inner wall of the cavity 2, a sound attenuation piece 6 is arranged on the inner wall of the cavity 2, a sound insulation strip 7, an insertion rod, the number of the inserted bars 8 at the four side positions of the plate body 1 can be three or more, the soundproof cotton plates 9 are positioned inside the soundproof strips 7, the soundproof strips 7 are fixedly sleeved on the surfaces of the inserted bars 8, the inner walls of the plastic boxes 5 are movably connected with the surfaces of the soundproof cotton plates 9, the interiors of the plastic boxes 5 are respectively and movably connected with the silencing plates 10 and the sound-absorbing cotton plates 11, two sides of the silencing plates 10 are respectively and movably connected with opposite surfaces of the soundproof cotton plates 9 and the sound-absorbing cotton plates 11, one sides of the surfaces of the plastic boxes 5, which are close to the plate body 1, are provided with the slots 12, the number and the positions of the slots 12 correspond to those of the inserted bars 8, the inserted bars 8 are inserted into the slots 12, the surfaces of the plastic boxes 5 are provided with the square grooves 13, the square grooves 13 are used for placing the square bars 14, the inner walls of the square grooves 13 are movably connected with the surfaces of the square bars 14, the positions at two ends of the square grooves 13, which correspond to the square bars 14, one side of square strip 14 surface near anechoic plate 10 is provided with kelly 15 and buckle mechanism 16 respectively, the quantity of buckle mechanism 16 is two on same square strip 14, the quantity of kelly 15 is one, kelly 15 is located between two buckle mechanism 16, draw-in groove 17 has been seted up on the surface of inserted bar 8, one side that plate body 1 was kept away from to draw-in groove 17 inner wall has the inclined plane, the inclined plane of kelly 15's inclined plane extrusion draw-in groove 17 inner wall, make the inner wall of inserted bar 8 and slot 12 closely laminate, it is more stable firm to fix plate body 1, square hole 18 has been seted up to one side that slot 12 inner wall is close to anechoic plate 10, the one end that kelly 15 is close to square hole 18 runs through plastics box 5 and with the inner wall swing joint of square hole 18, the surface of kelly 15 and the inner wall swing joint of draw-in groove 17, cavity 19 has been seted up to the inside of plastics box 5, cavity 19 makes plastics.

Specifically, the inner wall of circular slot 3 has been seted up ring channel 20, and the inner wall of ring channel 20 is the curved surface, and the silencing groove 21 has been seted up to the inner wall of ring channel 20, and sound contacts with the curved surface of ring channel 20, reflects and superposes each other and collide under the effect of the curved surface of ring channel 20 inner wall, converts acoustic energy into heat energy, inhales the sound and gives sound insulation, and silencing groove 21 further improves the sound-absorbing and sound-insulating ability of ring channel 20.

Specifically, the silencing groove 21 comprises an annular cavity 2101 and a through groove 2102, the annular cavity 2101 is arranged inside the plate body 1, the through groove 2102 is arranged on the inner wall of the annular groove 20, the central axis of the annular cavity 2101 coincides with the central axis of the annular groove 20, when sound enters the silencing groove 21, the sound is reflected under the action of the curved surface of the inner wall of the annular cavity 2101 and the inner wall of the through groove 2102, the sound is superposed and collided with each other, sound energy is converted into heat energy, and sound absorption and sound insulation are performed.

Specifically, the noise elimination part 6 comprises a noise elimination hole 601 and a cylindrical pin 602, the noise elimination hole 601 is arranged on the inner wall of the cavity 2, one end of the cylindrical pin 602 is fixedly connected with the inner wall of the noise elimination hole 601, the other end of the cylindrical pin 602 is fixedly connected with a ball 603, the ball 603 is located inside the cavity 2, an arc-shaped groove 604 is formed in the surface of the cylindrical pin 602, the arc-shaped groove 604 is located inside the noise elimination hole 601, the central axis of the arc-shaped groove 604 coincides with the central axis of the cylindrical pin 602, and when sound contacts the noise elimination part 6 after entering the cavity 2, the sound is reflected and mutually superposed and collided under the combined action of the curved surface of the inner wall of the noise elimination hole 601, the curved surface of the ball 603, the curved surface of the cylindrical pin 602 and the curved surface of the inner.

Specifically, cylindric lock 602's fixed surface is connected with ring 22, and ring 22 is located the inside of noise elimination hole 601, and opening groove 23 has been seted up on ring 22's surface, and when sound got into noise elimination hole 601, sound overlapped the collision each other through the reflection on ring 22 curved surface and opening groove 23 inner wall inclined plane, changed sound energy into heat energy, inhaled sound and syllable-dividing.

Specifically, the anechoic board 10 includes square ring 1001 and square plate 1002, the surface of square ring 1001 and the inner wall swing joint of plastic box 5, the both sides of square ring 1001 respectively with the opposite face swing joint of cotton board 9 and the cotton board 11 of inhaling sound, square plate 1002 fixed connection is at the inner wall of square ring 1001, through-hole 1003 has been seted up on the surface of square plate 1002, the inner wall fixedly connected with reflection strip 1004 of through-hole 1003, square plate 1002 is fixed in square ring 1001, the quantity of through-hole 1003 is a plurality of, a plurality of through-hole 1003 interval evenly distributed is on the surface of square plate 1002, when sound passes through in through-hole 1003 and reflection strip 1004, reflect and superpose each other and collide under through-hole 1003 inclined plane and reflection strip 1004 inclined plane effect, convert acoustic energy into heat energy, inhale sound and give sound insulation.

Specifically, the through hole 1003 is funnel-shaped, the surface of the reflection bar 1004 is an inclined surface, when sound passes through the through hole 1003 and the reflection bar 1004, the sound is reflected under the action of the inclined surface of the through hole 1003 and the inclined surface of the reflection bar 1004, and is superposed and collided with each other, sound energy is converted into heat energy, and sound absorption and sound insulation are performed.

Specifically, sound insulation block 24 has been cup jointed to the fixed surface of inserted bar 8, and the recess 25 has been seted up to one side that the 5 surfaces of plastic box are close to plate body 1, and recess 25 is linked together with slot 12, and the inner wall of recess 25 and sound insulation block 24's surface swing joint, sound insulation block 24 are made by foamed rubber, and sound insulation block 24 further prevents that plate body 1 from directly transmitting sound to plastic box 5 on, further improves plate body 1's sound-proof ability.

Specifically, the fastening mechanism 16 includes a fastening ring 1601 and a locking block 1602, the fastening ring 1601 is fixedly connected to one side of the surface of the square bar 14 close to the sound-deadening plate 10, a fastening hole 1603 is formed on the inner wall of the square groove 13, the inner wall of the fastening hole 1603 is movably connected with the surface of the fastening ring 1601, a fastening seat 1604 is formed on the side surface of the inner wall of the fastening hole 1603, the inner wall of the fastening seat 1604 is movably connected with the surface of the locking block 1602, when the fastening ring 1601 is inserted into the fastening hole 1603, the inner wall of the clamp hole 1603 presses the inclined surface of the clamp block 1602, so that the clamp ring 1601 is compressed and deformed, when the snap ring 1601 is attached to the inner wall of the clamp hole 1603, the clamping block 1602 is clamped in the clamp 1604 under the elastic force of the snap ring 1601 to clamp the snap ring 1601, can block square bar 14 and kelly 15, when upwards pulling square bar 14, the inclined plane of bayonet socket 1604 inner wall extrudees the inclined plane of fixture block 1602, makes snap ring 1601 compression deformation, and fixture block 1602 separates with bayonet socket 1604, can pull down square bar 14 and kelly 15 from plastic box 5.

Specifically, the inner wall of the bayonet 1604 is an inclined surface, and the shape of the clamping block 1602 is matched with that of the bayonet 1604, so that the clamping ring 1601 cannot be separated from the clamping hole 1603 when the clamping block 1602 is clamped in the bayonet 1604.

When the sound absorbing cotton plate 11 is used, the sound absorbing cotton plate 11 is placed in the plastic box 5, the sound absorbing plate is placed in the plastic box 5, the inserting rod 8 on the plate body 1 is inserted into the inserting groove 12 of the plastic box 5, the sound absorbing cotton plate 9 is attached to the sound absorbing plate, the clamping rod 15 of the square strip 14 is inserted into the clamping groove 17 and the square hole 18, the clamping ring 1601 and the clamping block 1602 of the clamping mechanism 16 of the square strip 14 are clamped in the clamping hole 1603, the square strip 14 and the clamping rod 15 are clamped, the clamping rod 15 clamps the inserting rod 8, the plate body 1 is connected with the plastic box 5, the assembly of the plate body 1 and the plastic box 5 is facilitated, when the clamping ring 1601 and the clamping block 1602 of the clamping mechanism 16 are clamped in the clamping hole 1603, the inclined surface of the clamping block 1602 is pressed by the inner wall of the clamping hole 1603, the clamping block 1602 is clamped in the clamping opening 1604 under the self elastic force of the clamping ring 1601 after the clamping ring 1601 is attached to the inner wall of the clamping hole 1603, the clamping, the inclined plane of the inner wall of the clamping groove 17 is extruded by the inclined plane of the clamping rod 15, so that the inserting rod 8 is tightly attached to the inner wall of the slot 12, the plate body 1 is more tightly connected with the plastic box 5, the cavity 2 is arranged in the plate body 1, the circular groove 3 is communicated with the cavity 2, when sound is transmitted to the plate body 1, the sound enters the cavity 2 through the circular groove 3, when the sound passes through the circular groove 3, the sound is firstly reflected and mutually superposed and collided under the action of the curved surface of the inner wall of the annular groove 20 and the curved surface of the inner wall of the silencing groove 21, then enters the cavity 2, and is reflected again and mutually superposed and collided under the action of the curved surface of the inner wall of the cavity 2 and the curved surface of the reflecting cone 26, the silencing piece 6 is positioned at the position of the cavity 2, when the sound is contacted with the silencing piece 6, the sound is reflected and mutually superposed and collided under the combined action of the curved surface of the inner wall of the, converting sound energy into heat energy, performing sound absorption and sound insulation, transmitting sound after sound absorption and sound insulation to the position of a sound insulation cotton plate 9 through a plate body 1, transmitting the sound after sound insulation by the sound insulation cotton plate 9 to the position of a sound absorption plate 10, contacting the sound with the sound absorption plate 10, reflecting again under the action of a through hole 1003 and a reflecting strip 1004 inclined plane on the sound absorption plate 10, mutually overlapping and colliding, converting the sound energy into heat energy, further performing sound absorption and sound insulation, transmitting the heat energy to the position of the sound absorption cotton plate 11 for sound absorption and transmitting the sound energy to a plastic box 5, arranging a cavity 19 inside the plastic box 5 to enable the plastic box 5 to be hollow, performing sound insulation again, performing sound absorption and sound insulation for multiple times through matching of a cavity 2, a sound absorption piece 6, the sound insulation cotton plate 9, the sound absorption plate 10 and the sound absorption cotton plate 11, improving the sound absorption and sound insulation capability of the plate body 1, enabling a sound insulation strip 7 to be made of foam rubber, and separating the plate, prevent that sound from directly transmitting to plastic box 5 through plate body 1 on, further improve plate body 1 and plastic box 5's sound-insulating ability, the swash plate 4 and the circular slot 3 of same position, the slope of swash plate 4 is fixed in circular slot 3 top, play dustproof and rainproof effect to circular slot 3, prevent effectively that dust and rainwater from getting into in circular slot 3 and the cavity 2, when needing to separate plate body 1 and plastic box 5, dig the both sides position of 14 long directions of square strip, pulling square strip 14 makes the inclined plane of the inclined plane extrusion fixture block 1602 of bayonet 1604 inner wall, make fixture block 1602 extrusion snap ring 1601, snap ring 1601 compression deformation, continue pulling square strip 14 and make snap ring 1601 and card hole 1603 separation, card pole 15 and square hole 18 and draw-in groove 17 separation, card pole 15 is not blockking inserted bar 8, can stimulate plate body 1 and make inserted bar 8 and slot 12 separation, can separate plate body 1 and plastic slab.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.