Totally-closed sound barrier based on arc sound barrier plates

Abstract

The invention relates to the technical field of totally-closed sound barriers, in particular to a totally-closed sound barrier based on arc sound barrier plates. According to the technical scheme, the sound barrier comprises a first arc supporting plate and a second arc supporting plate, and one side of the first arc supporting plate is fixedly connected with an upper arc sound barrier plate. When the limiting lantern ring drives the clamping groove block to continuously move along the inner wall of the circular limiting hollow column, the thrust of the clamping groove block on the threaded positioning rod is decomposed into the force for the thread of the threaded positioning rod to slide along the clamping groove block, so that the threaded positioning rod rotates until the clamping groove block moves to the tail end of the thread of the threaded positioning rod; the limiting threaded clamping groove block is matched with the threaded positioning rod, and the threaded positioning rod and the limiting threaded clamping groove block are installed in a threaded positioning mode, so that the totally-closed sound barrier is conveniently installed, adjustment of the position of the sound barrier is reduced, and over-skilled operation skills are not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of fully enclosed sound barriers, and in particular to a fully enclosed sound barrier based on arc sound barrier plates. Background Art

[0002] A fully enclosed sound barrier is a facility used to reduce noise pollution. It consists of a top, two sides and a bottom structure, which completely surrounds the noise source in a relatively closed space, thereby blocking the propagation of noise to the greatest extent possible. It can effectively block direct sound, and is particularly effective in reducing low-frequency noise. Due to its complex structure, cleaning, inspection and maintenance are relatively difficult, requiring professional personnel and equipment for maintenance, and the maintenance cost is relatively high.

[0003] In the patent document with the publication number CN219653564U, a fully enclosed sound barrier based on a circular arc sound barrier plate is disclosed, including a road base beam and a sound barrier plate body, the inner surfaces of the left and right sides of the mounting seat are fixedly connected with springs, the rear outer surfaces of the two fixing seats are provided with a first connecting hole, the front outer surface of the connecting seat is fixedly connected with a second connector, and the rear outer surface of the connecting seat is provided with a second connecting hole. The fully enclosed sound barrier based on the circular arc sound barrier plate drives the plug rod through the spring, and then the first connector cooperates with the first connecting hole, and the second connector cooperates with the second connector, which solves the current problem of first overlapping the entire transparent screen body on the upper surface of the adjacent H-shaped steel and then fixing it with a pressure strip. The disadvantage of this structure is that the transparent screen body is too large and needs to be removed as a whole once it is damaged. During the installation process, many bolts need to be removed, which is inefficient.

[0004] When the above-mentioned fully enclosed sound barrier is in use, its main body is transported to the specified position by a lifting device. During the transportation of the fully enclosed sound barrier, in order to align the corresponding installation holes on the ground of the above-mentioned barrier, the connecting holes on the barrier need to be aligned with the installation holes as much as possible. Therefore, the transportation technology requirements of the barrier are relatively high. At the same time, after the barrier is lowered, in order to improve the stability of the barrier, multiple screws need to be installed. If the screws are not aligned with the screw holes, a lifting machine is required to adjust them. Therefore, the installation requirements of the fully enclosed sound barrier are relatively high.

[0005] Therefore, the present application proposes a fully enclosed sound barrier based on arc sound barrier panels. Summary of the invention

[0006] The purpose of the present invention is to propose a fully enclosed sound barrier based on arc sound barrier plates to address the problems in the background technology that the connection holes on the barrier need to be aligned with the mounting holes as much as possible, which requires high technical requirements for the transportation of the barrier, and the screws need to be aligned with the screw holes, which requires the crane to be adjusted multiple times, and the installation requirements of the fully enclosed sound barrier.

[0007] The technical solution of the present invention is as follows: a fully enclosed sound barrier based on a circular arc sound barrier plate, comprising a circular arc sound barrier plate assembly, wherein the circular arc sound barrier plate assembly comprises a first circular arc support plate and a second circular arc support plate, an upper circular arc sound barrier plate is fixedly connected to one side of the first circular arc support plate, a lower circular arc sound barrier plate is fixedly connected to the side of the second circular arc support plate facing the upper circular arc sound barrier plate, the upper circular arc sound barrier plate and the lower circular arc sound barrier plate are arranged in a spliced ​​state through a driving assembly, and a corresponding sound barrier plate mounting assembly is plugged into the bottom of the circular arc sound barrier plate assembly; The corresponding sound baffle installation assembly includes a ground installation frame, the first arc support plate and the bottom of the upper arc sound barrier plate are fixedly connected with a sliding positioning block, the second arc support plate and the bottom of the lower arc sound barrier plate are fixedly connected with a receiving positioning block, the sliding positioning block is fixedly connected with a threaded positioning rod on the side facing the receiving positioning block, and the threaded positioning rod is inserted into the interior of the receiving positioning block, the receiving positioning block and the sliding positioning block are slidably connected to the interior of the ground installation frame, and the interior of the ground installation frame is slidably connected with a limited threaded slot block; The sliding positioning block is rotatably connected to a threaded positioning rod, the receiving positioning block is fixedly connected to a circular limiting hollow column, one side of the circular limiting hollow column is fixedly connected to a sliding cavity block, the threaded positioning rod is located on one side of the circular limiting hollow column and is provided with a thread, the circular limiting hollow column is slidably connected to a limiting ring, the inner wall of the limiting ring is fixedly connected to a slot block, the slot block is slidably connected to the inside of the thread of the threaded positioning rod, the threaded positioning rod passes through one side of the sliding cavity block and is threadedly connected to the inside of the limiting threaded slot block, and the threaded positioning rod passes through one side of the sliding cavity block and is threadedly connected to the inside of the limiting threaded slot block.

[0008] Optionally, the driving assembly includes a motor assembly fixedly mounted above the lower arc sound barrier plate through a limiting mounting groove, and the output shaft of the motor assembly is fixedly connected to an auxiliary gear.

[0009] Optionally, the driving assembly also includes a two-way positioning frame fixedly installed below the upper arc sound barrier plate, the two-way positioning frame includes a locking rail and a rack rail, the locking rail of the two-way positioning frame is slidably installed on the outside of the auxiliary gear, and the rack rail of the auxiliary gear is arranged in a meshing state with the two-way positioning frame.

[0010] Optionally, the inner wall of the first arc support plate is fixedly connected with a first limiting slot that is compatible with the lower arc sound barrier plate, and the inner wall of the second arc support plate is fixedly connected with a second limiting slot that is compatible with the upper arc sound barrier plate.

[0011] Optionally, a first rubber sealing ring is fixedly connected to the side of the second limiting slot facing the upper surface of the upper arc sound barrier plate, and a second rubber sealing ring is fixedly connected to the side of the first limiting slot facing the lower surface of the lower arc sound barrier plate.

[0012] Optionally, a plurality of slot-type pressure pushing assemblies are installed on the circular arc sound barrier plate assembly, and the plurality of slot-type pressure pushing assemblies are arranged in a ring-shaped state with respect to the surface of the lower circular arc sound barrier plate.

[0013] Optionally, the slot-type pressure pushing assembly includes a plurality of built-in threaded tubes fixedly mounted on the outer wall of the lower arc sound barrier plate, and the interior of the built-in threaded tubes is slidably connected to a threaded push rod.

[0014] Optionally, two sets of opposite threads are provided on the outer side of the threaded top rod, and the outer side of the threaded top rod is threadedly connected to the first hinge rod and the second hinge rod through the two sets of opposite threads. The outer sides of the first hinge rod and the second hinge rod are rotatably connected to two sets of corresponding rotating rods, and the two sets of corresponding rotating rods are respectively attached to the side walls of the first circular arc support plate and the side walls of the second circular arc support plate.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the limiting collar drives the slot block to continue to move along the inner wall of the circular limiting hollow column, the thrust of the slot block on the threaded positioning rod is decomposed into the force of the thread of the threaded positioning rod sliding along the slot block, and the threaded positioning rod rotates until the slot block moves to the end of the thread of the threaded positioning rod. The threaded positioning rod and the limiting threaded slot block are thread-positioned and installed through the cooperation of the limiting threaded slot block and the threaded positioning rod, so that the fully enclosed sound barrier can be installed more conveniently, the adjustment of the position of the sound barrier can be reduced, and overly skilled operating skills are not required; 2. The upper arc sound barrier plate is inserted into the second limiting slot and is in a precise fit with the first rubber sealing ring, while the lower arc sound barrier plate is inserted into the first limiting slot and is in a sealed state with the second rubber sealing ring, then the first arc support plate, the second arc support plate, the upper arc sound barrier plate and the lower arc sound barrier plate are in a fully enclosed state; 3. As the first circular arc support plate moves toward the second circular arc support plate, the built-in threaded tube squeezes the lower circular arc sound barrier plate and the second rubber sealing ring, and then the threaded push rod squeezes the upper circular arc sound barrier plate, causing the upper circular arc sound barrier plate and the first rubber sealing ring to be tightly squeezed, thereby improving the sealing of the fully enclosed sound barrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of the fully enclosed sound barrier of the present invention is given; Figure 2 It is a schematic diagram of the structure of the upper arc sound barrier plate of the present invention; Figure 3 is a schematic diagram of the structure of the motor assembly of the present invention; Figure 4 for Figure 3 Enlarged view of the middle A area; Figure 5 It is a structural schematic diagram of the gap-type pressure pushing assembly of the present invention; Figure 6 for Figure 5 Enlarged view of the middle B area; Figure 7 It is a structural schematic diagram of the threaded positioning rod of the present invention; Figure 8 for Figure 7 Magnified view of the middle C area.

[0017] Figure numerals: 1. Arc sound barrier plate assembly; 101. First arc support plate; 102. Second arc support plate; 103. Upper arc sound barrier plate; 104. Lower arc sound barrier plate; 105. First limit slot; 106. Second limit slot; 2. Drive assembly; 201. Motor assembly; 202. Limit mounting slot; 203. Bidirectional positioning frame; 204. Auxiliary gear; 3. Slit-type pressure push assembly; 301. First hinge Rod; 302, second hinged rod; 303, threaded top rod; 304, built-in threaded tube; 305, corresponding rotating rod; 4, corresponding sound baffle installation assembly; 401, ground installation frame; 402, receiving positioning block; 403, threaded positioning rod; 404, sliding positioning block; 405, limiting threaded slot block; 406, circular limiting hollow column; 407, sliding cavity block; 408, limiting sleeve ring; 409, slot block; 410, annular swivel. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1-Figure 3As shown, a fully enclosed sound barrier based on an arc sound barrier plate proposed in the present invention includes an arc sound barrier plate assembly 1, the arc sound barrier plate assembly 1 includes a first arc support plate 101 and a second arc support plate 102, an upper arc sound barrier plate 103 is fixedly connected to one side of the first arc support plate 101, and a lower arc sound barrier plate 104 is fixedly connected to the side of the second arc support plate 102 facing the upper arc sound barrier plate 103, the upper arc sound barrier plate 103 and the lower arc sound barrier plate 104 are arranged in a spliced ​​state through a driving assembly 2, the first arc support plate 101, the second arc support plate 102, the upper arc sound barrier plate 103 and the lower arc sound barrier plate 104 form a complete fully enclosed sound barrier, the bottom of the arc sound barrier plate assembly 1 is plugged with a corresponding sound baffle installation assembly 4, the inner wall of the first arc support plate 101 is fixed A first limiting slot 105 adapted to the lower circular arc sound barrier plate 104 is fixedly connected, and a second limiting slot 106 adapted to the upper circular arc sound barrier plate 103 is fixedly connected to the inner wall of the second circular arc support plate 102, and a first rubber sealing ring is fixedly connected to the side of the second limiting slot 106 facing the upper surface of the upper circular arc sound barrier plate 103, and a second rubber sealing ring is fixedly connected to the side of the first limiting slot 105 facing the lower surface of the lower circular arc sound barrier plate 104. The upper circular arc sound barrier plate 103 is inserted into the second limiting slot 106 and is in a precise fit with the first rubber sealing ring, and the lower circular arc sound barrier plate 104 is inserted into the first limiting slot 105 and is sealed with the second rubber sealing ring. Then the first circular arc support plate 101, the second circular arc support plate 102, the upper circular arc sound barrier plate 103 and the lower circular arc sound barrier plate 104 are in a fully closed state.

[0020] like Figure 4 As shown, the drive component 2 includes a motor component 201 fixedly installed above the lower arc sound barrier plate 104 through a limiting mounting groove 202, and the output shaft of the motor component 201 is fixedly connected to an auxiliary gear 204. The drive component 2 also includes a two-way positioning frame 203 fixedly installed below the upper arc sound barrier plate 103, and the two-way positioning frame 203 includes a locking rail and a rack rail. The locking rail of the two-way positioning frame 203 is slidably installed on the outside of the auxiliary gear 204, and the rack rail of the auxiliary gear 204 is arranged in a meshing state with the two-way positioning frame 203. The motor component 201 serves as a drive, which drives the rotation of the auxiliary gear 204. The auxiliary gear 204 meshes with the rack rail of the two-way positioning frame 203 to guide the upper arc sound barrier plate 103 to slide toward one side of the lower arc sound barrier plate 104, and the locking rail helps the upper arc sound barrier plate 103 to slide stably, so that the lower arc sound barrier plate 104 and the upper arc sound barrier plate 103 are in a spliced ​​state.

[0021] like Figure 5-Figure 6As shown, a plurality of sandwich-type pressure pushing assemblies 3 are installed on the circular arc sound barrier plate assembly 1, and the plurality of sandwich-type pressure pushing assemblies 3 are arranged in a ring state with respect to the surface of the lower circular arc sound barrier plate 104. The sandwich-type pressure pushing assemblies 3 include a plurality of built-in threaded tubes 304 fixedly installed on the outer wall of the lower circular arc sound barrier plate 104, and a threaded push rod 303 is slidably connected inside the built-in threaded tube 304, and two groups of opposite threads are provided on the outer side of the threaded push rod 303, and a first hinge rod 301 and a second hinge rod 302 are respectively threadedly connected on the outer side of the threaded push rod 303 through the two groups of opposite threads, and two groups of corresponding rotating rods 305 are respectively rotatably connected on the outer sides of the first hinge rod 301 and the second hinge rod 302, and the two groups of corresponding rotating rods 305 are respectively attached to the side walls of the first circular arc support plate 101 and the side walls of the second circular arc support plate 102. As the first circular arc support plate 101 moves toward When moving toward the side of the second circular arc support plate 102, the first circular arc support plate 101 and the second circular arc support plate 102 push the first hinge rod 301 and the second hinge rod 302 to be in a deflected state through the corresponding rotating rod 305. The deflection directions of the first hinge rod 301 and the second hinge rod 302 are different, and the threaded top rod 303 slides toward the direction of the upper circular arc sound barrier plate 103 due to the threaded guide opposite to the first hinge rod 301 and the second hinge rod 302. When the threaded top rod 303 slides along the built-in threaded tube 304, an extrusion force is generated on the built-in threaded tube 304. The built-in threaded tube 304 squeezes the lower circular arc sound barrier plate 104 and the second rubber sealing ring, and the threaded top rod 303 squeezes the upper circular arc sound barrier plate 103, causing the upper circular arc sound barrier plate 103 to be tightly squeezed with the first rubber sealing ring, thereby improving the sealing of the fully enclosed sound barrier.

[0022] In this embodiment, Figure 7-Figure 8 As shown, the corresponding sound baffle installation assembly 4 includes a ground installation frame 401, a first arc support plate 101 and a bottom of an upper arc sound barrier plate 103 are fixedly connected with a sliding positioning block 404, a second arc support plate 102 and a bottom of a lower arc sound barrier plate 104 are fixedly connected with a receiving positioning block 402, a side of the sliding positioning block 404 facing the receiving positioning block 402 is fixedly connected with a threaded positioning rod 403, and the threaded positioning rod 403 is inserted into the inside of the receiving positioning block 402, the receiving positioning block 402 and the sliding positioning block 404 are slidably connected to the inside of the ground installation frame 401, and the inside of the ground installation frame 401 is slidably connected with a limited threaded slot block 405; The interior of the sliding positioning block 404 is fixedly connected to a limiting collar 408, and the interior of the limiting collar 408 is slidably connected to a threaded positioning rod 403, and the interior of the receiving positioning block 402 is fixedly connected to a circular limiting hollow column 406, and one side of the circular limiting hollow column 406 is fixedly connected to a sliding cavity block 407. The threaded positioning rod 403 is located on one side of the circular limiting hollow column 406 and has a thread. The limiting collar 408 is slidably connected to the inside of the circular limiting hollow column 406, and a slot block 409 is fixedly connected to the inner wall of the limiting collar 408. The limiting collar 408 is guided by the thread of the threaded positioning rod 403 through the slot block 409 and is set in a sliding state on the threaded positioning rod 403. The threaded positioning rod 40 3 is slidably installed in the interior of the slide cavity block 407 through the annular swivel 410, and the threaded positioning rod 403 passes through one side of the slide cavity block 407 and is threadedly connected to the interior of the limiting threaded slot block 405. The staff lifts the barrier through a crane and directly inserts it into the interior of the ground installation frame 401. Compared with the alignment of the installation holes, it is convenient to operate. Since there are a large number of components on the surface of the lower arc sound barrier plate 104, its weight is greater than the weight of the first arc support plate 101, and the driving component 2 is fixedly installed on the outer side of the lower arc sound barrier plate 104, the driving component 2 drives the first arc support plate 101 and the upper arc sound barrier plate 103 along the ground installation frame 401 and the second arc support plate 102 and the lower arc sound barrier plate 1 04 forms a barrier. During this process, the sliding positioning block 404 drives the limiting collar 408 to slide along the inner wall of the circular limiting hollow column 406. Since the limiting collar 408 generates a thrust on the threaded positioning rod 403 through the slot block 409, the threaded positioning rod 403 moves along the inner cavity of the circular limiting hollow column 406 toward the limiting threaded slot block 405. When the annular swivel 410 on the threaded positioning rod 403 slides along the vertical slideway of the sliding cavity block 407 to the inner wall of one side close to the limiting threaded slot block 405, the threaded positioning rod 403 faces one side of the limiting threaded slot block 405 and fits with the threaded hole of the limiting threaded slot block 405. At this time, the annular swivel 410 is pressed by the side of the sliding cavity block 407. When the limit of the wall makes it unable to move again, when the limit collar 408 drives the slot block 409 to continue to move along the inner wall of the circular limit hollow column 406, the threaded positioning rod 403 is subjected to the thrust of the slot block 409 and decomposed into the force of the thread of the threaded positioning rod 403 sliding along the slot block 409, and the threaded positioning rod 403 is rotated until the slot block 409 moves to the end of the thread of the threaded positioning rod 403, and the staff can push the limit threaded slot block 405 to cooperate with the threaded positioning rod 403, and the threaded positioning rod 403 and the limit threaded slot block 405 are threadedly positioned and installed, so as to facilitate the installation of the fully enclosed sound barrier, reduce the adjustment of the position of the sound barrier, and do not require overly skilled operating skills; Similarly, when the threaded positioning rod 403 and the limiting threaded slot block 405 are removed, the annular swivel 410 moves to the side of the sliding cavity block 407 away from the limiting threaded slot block 405, and the threaded positioning rod 403 rotates in the opposite direction to disengage from the limiting threaded slot block 405, and the slot block 409 returns to the initial position of the thread of the threaded positioning rod 403.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. "Comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0024] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A fully enclosed sound barrier based on an arc sound barrier plate, comprising an arc sound barrier plate assembly (1), wherein the arc sound barrier plate assembly (1) comprises a first arc support plate (101) and a second arc support plate (102), an upper arc sound barrier plate (103) being fixedly connected to one side of the first arc support plate (101), and a lower arc sound barrier plate (104) being fixedly connected to the side of the second arc support plate (102) facing the upper arc sound barrier plate (103). Features: The upper arc sound barrier plate (103) and the lower arc sound barrier plate (104) are arranged in a spliced ​​state via a driving assembly (2), and a corresponding sound barrier plate installation assembly (4) is plugged into the bottom of the arc sound barrier plate assembly (1); The corresponding sound barrier installation assembly (4) comprises a ground installation frame (401), the first arc support plate (101) and the bottom of the upper arc sound barrier plate (103) are fixedly connected with a sliding positioning block (404), the second arc support plate (102) and the bottom of the lower arc sound barrier plate (104) are fixedly connected with a receiving positioning block (402), the sliding positioning block (404) is fixedly connected with a threaded positioning rod (403) on the side facing the receiving positioning block (402), and the threaded positioning rod (403) is inserted into the interior of the receiving positioning block (402), the receiving positioning block (402) and the sliding positioning block (404) are slidably connected to the interior of the ground installation frame (401), and the interior of the ground installation frame (401) is slidably connected with a limited position threaded slot block (405); The interior of the sliding positioning block (404) is fixedly connected to a limiting collar (408), the interior of the limiting collar (408) is slidably connected to a threaded positioning rod (403), the interior of the receiving positioning block (402) is fixedly connected to a circular limiting hollow column (406), one side of the circular limiting hollow column (406) is fixedly connected to a sliding cavity block (407), the threaded positioning rod (403) is located on one side of the circular limiting hollow column (406) and is provided with threads, the limiting collar (408) is slidably connected to the interior of the circular limiting hollow column (406), a slot block (409) is fixedly connected to the inner wall of the limiting collar (408), the threaded positioning rod (403) is slidably installed in the interior of the sliding cavity block (407) through an annular rotating ring (410), and the threaded positioning rod (403) passes through one side of the sliding cavity block (407) and is threadedly connected to the interior of the limiting threaded slot block (405).

2. A fully enclosed sound barrier based on a circular arc sound barrier plate according to claim 1, It is characterized in that The driving assembly (2) comprises a motor assembly (201) fixedly mounted above the lower arc sound barrier plate (104) via a limiting mounting groove (202), and an output shaft of the motor assembly (201) is fixedly connected to an auxiliary gear (204).

3. A fully enclosed sound barrier based on a circular arc sound barrier plate according to claim 2, It is characterized in that The driving assembly (2) further comprises a bidirectional positioning frame (203) fixedly mounted below the upper arc sound barrier plate (103), the bidirectional positioning frame (203) comprising a snap-fit ​​rail and a rack rail, the snap-fit ​​rail of the bidirectional positioning frame (203) being slidably mounted on the outside of an auxiliary gear (204), and the rack rail of the auxiliary gear (204) being arranged in a meshing state with the bidirectional positioning frame (203).

4. A fully enclosed sound barrier based on arc sound barrier panels according to claim 1, It is characterized in that The inner wall of the first arc support plate (101) is fixedly connected with a first limiting slot (105) adapted to the lower arc sound barrier plate (104), and the inner wall of the second arc support plate (102) is fixedly connected with a second limiting slot (106) adapted to the upper arc sound barrier plate (103).

5. A fully enclosed sound barrier based on arc sound barrier panels according to claim 4, It is characterized in that A first rubber sealing ring is fixedly connected to a side of the second limiting slot (106) facing the upper surface of the upper circular arc sound barrier plate (103), and a second rubber sealing ring is fixedly connected to a side of the first limiting slot (105) facing the lower surface of the lower circular arc sound barrier plate (104).

6. A fully enclosed sound barrier based on arc sound barrier panels according to claim 1, It is characterized in that A plurality of slit-type pressure pushing assemblies (3) are installed on the circular arc sound barrier plate assembly (1), and the plurality of slit-type pressure pushing assemblies (3) are arranged in a ring-shaped state with respect to the surface of the lower circular arc sound barrier plate (104).

7. A fully enclosed sound barrier based on arc sound barrier panels according to claim 6, It is characterized in that The slot-type pressure pushing assembly (3) comprises a plurality of internal threaded tubes (304) fixedly mounted on the outer wall of the lower arc sound barrier plate (104), wherein the internal parts of the internal threaded tubes (304) are slidably connected with threaded push rods (303).

8. A fully enclosed sound barrier based on arc sound barrier panels according to claim 7, It is characterized in that The outer side of the threaded top rod (303) is provided with two groups of opposite threads, and the outer side of the threaded top rod (303) is respectively threadedly connected to the first hinge rod (301) and the second hinge rod (302) through the two groups of opposite threads, and the outer sides of the first hinge rod (301) and the second hinge rod (302) are respectively rotatably connected to two groups of corresponding rotating rods (305), and the two groups of corresponding rotating rods (305) are respectively attached to the side walls of the first circular arc support plate (101) and the side walls of the second circular arc support plate (102).

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