Noise reduction device for construction site

Abstract

The invention discloses a construction site noise reduction device, relates to the technical field of construction noise reduction devices, and solves the problem that the effective noise reduction space of the device is small, the construction site noise reduction device comprises a control base and two mounting frames, the control base comprises a bottom column and a rotating column, the two mounting frames are arranged on the rotating column and are perpendicular to each other, and the bottom column is arranged on the bottom column. Each mounting frame comprises a plurality of parallel mounting plates, the mounting plates slide on the adjacent mounting plates, a sliding plate is arranged on the mounting plate farthest away from the control seat, the two sliding plates are parallel to each other and can slide on the adjacent sliding plate, and a rotating part for controlling the two mounting frames to rotate at the same time is arranged on the control seat. A plurality of moving assemblies for controlling the mounting plates to slide in the direction close to or away from the adjacent mounting plates are arranged on the mounting frame, the mounting frame and the sliding plate are both provided with sound insulation materials, and a fixing assembly for fixing the bottom column is arranged on the control seat; the effective noise reduction space of the device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of construction noise reduction devices, and in particular to a construction site noise reduction device. Background Art

[0002] During construction, some equipment will generate very loud noise when working, especially when construction is near places where people live and work, which will have a greater impact on nearby residents. At this time, it is necessary to surround the noise-generating equipment with a noise reduction shed to achieve the effect of reducing noise.

[0003] The existing Chinese patent with announcement number CN218715498U discloses a construction site noise reduction device, including a noise reduction shed and a feed plate, the feed plate is used to feed materials into the noise reduction shed, a pipe hole for running the pipe is opened at the rear end of the noise reduction shed, a feed port for placing the feed plate is opened on the side of the noise reduction shed, the right end of the feed plate extends into the noise reduction shed, and the end of the feed plate extending into the noise reduction shed is tilted downward, and the material is fed into the noise reduction shed through the feed plate. The device feeds materials into the noise reduction shed through the feed plate, thereby increasing the sealing degree of the noise reduction shed, increasing the noise reduction effect, and reducing the noise of the concrete pump.

[0004] In the process of implementing this application, the applicant found that the existing construction noise reduction devices are all fixed with fences or greenhouses. At this time, the effective noise reduction area is the space surrounded by the fence or the space covered by the greenhouse. When the construction project in this space is completed, the fence or greenhouse needs to be dismantled and further erected, and the effective noise reduction space of the device is relatively small. Summary of the invention

[0005] In order to increase the effective noise reduction space of the device, the present application provides a construction site noise reduction device.

[0006] The present application provides a construction site noise reduction device, which adopts the following technical solution: A construction site noise reduction device comprises a control seat and two mounting frames, the control seat comprises a base column and a rotating column, the two mounting frames are arranged on the rotating column, the two mounting frames are perpendicular to each other, the mounting frames comprise a plurality of mounting plates parallel to each other, the mounting plates slide on adjacent mounting plates, a sliding plate is arranged on the mounting plate farthest from the control seat, the two sliding plates are parallel to each other, the sliding plates can slide on adjacent sliding plates, a rotating member for controlling the two mounting frames to rotate simultaneously is arranged on the control seat, a rotation centerline of the mounting frame extends in a vertical direction, a plurality of moving components for controlling the mounting plates to slide toward or away from adjacent mounting plates are arranged on the mounting frame, the mounting frame and the sliding plate are both provided with sound insulation material, and a fixing component for fixing the base column is arranged on the control seat.

[0007] By adopting the above technical solution, when construction is required in an area, the control seat is set at the center of the area and the column is fixed by the fixing component. Then, several mounting plates are moved away from the control seat by the moving component until the mounting plates are moved to the farthest distance. At this time, the first noise reduction space is formed by several mounting plates and two sliding plates, and construction personnel can carry out construction in this noise reduction space. When the construction position needs to be changed, several mounting plates are moved toward the control seat by the moving component. At this time, the length of the mounting frame becomes shorter, which is convenient for the rotating column to rotate. The rotating component controls the rotating column to rotate 90°, and then the moving component continues to control the movement of several mounting plates away from the control seat. At this time, a second noise reduction space is formed, and the third noise reduction space and the fourth noise reduction space are formed in sequence until the construction of the entire construction area can be completed, thereby achieving the effect of improving the effective noise reduction space.

[0008] Optionally, a mounting block is provided on a side of the mounting plate away from the adjacent mounting frame, and a mounting groove for the mounting block to slide horizontally is provided on the adjacent mounting plate close to the control seat.

[0009] By adopting the above technical solution, with the cooperation of the mounting block and the mounting groove, the effect of the mounting plate sliding on the adjacent mounting plate can be achieved.

[0010] Optionally, the moving assembly includes a moving screw and a moving motor arranged on the mounting plate, the moving screw is arranged on an output shaft of the moving motor, and the mounting block is provided with a thread groove adapted to the threaded portion of the moving screw.

[0011] By adopting the above technical solution, the moving motor is started, the moving screw begins to rotate, and with the cooperation of the threaded portion and the thread groove of the moving screw, the mounting block can drive the mounting plate to slide toward or away from the control seat.

[0012] Optionally, a first control switch is provided on a groove wall of one side of the mounting groove close to the control seat, and when the mounting block abuts against the first control switch, the moving motor on the adjacent mounting plate close to the control seat is started.

[0013] By adopting the above technical solution, the moving motor farthest from the control seat is started, and the mounting block farthest from the control seat begins to move toward the control seat until the mounting block abuts against the first control switch. At this time, the adjacent mounting plates can be moved. By operating the moving motor farthest from the control seat, the mounting plates can be moved in sequence toward the control seat.

[0014] Optionally, a second control switch is provided on a groove wall of the mounting groove away from the control seat, and when the mounting block abuts against the second control switch, the moving motor on the adjacent mounting plate away from the control seat is started.

[0015] By adopting the above technical solution, the moving motor closest to the control is started, and the mounting block on the closest control seat begins to move away from the control seat until the mounting block abuts against the second control switch. At this time, the adjacent mounting plates can be moved, and by operating the nearby moving motors, the mounting plates can be moved away from the control seat in turn.

[0016] Optionally, the rotating member is a rotating motor, and the output shaft of the rotating motor is arranged on the rotating column.

[0017] By adopting the above technical solution, the rotating motor is started, and the output shaft of the rotating motor drives the rotating column to rotate. Since the two mounting frames are both arranged on the rotating column, the effect of the rotating member driving the mounting frame to rotate is achieved.

[0018] Optionally, an abutment plate is provided at the lower end of the mounting plate, and a lifting component is provided on the mounting plate for controlling the abutment plate to move in a vertical direction when the mounting block moves toward or away from the control seat.

[0019] By adopting the above technical solution, under the action of the lifting assembly, when the mounting block moves toward the control seat, the abutment plate can be separated from the ground until the rotating part controls the mounting frame to rotate. The abutment plate separated from the ground will no longer cause more friction to the rotating mounting frame, thereby achieving the effect of facilitating the rotation of the mounting frame.

[0020] Optionally, the lifting assembly includes a lifting fixed pulley and a lifting rope wound around the lifting fixed pulley, the lifting fixed pulley is arranged on a side of the mounting plate away from the control seat, one side of the lifting rope passes through the mounting block and enters the mounting groove in the adjacent mounting plate close to the control seat, and abuts against a groove wall on one side of the mounting groove close to the lifting fixed pulley, and the other end of the lifting rope is arranged on the upper end surface of the abutment plate.

[0021] By adopting the above technical solution, when the mounting block moves toward the control seat, the lifting rope can pull the abutment plate to rise through the lifting fixed pulley. When the mounting block moves toward the direction away from the control seat, the abutment plate can descend under the action of gravity. When the mounting block abuts against the wall of the mounting groove away from the control seat, the abutment plate just abuts against the ground.

[0022] Optionally, a plurality of abutment blocks are provided on the side wall of the abutment plate, and a plurality of stabilizing grooves for the abutment blocks to slide in the vertical direction are provided on the mounting plate.

[0023] By adopting the above technical solution, with the cooperation of the abutment block and the stabilizing groove, the abutment plate can remain stable during the sliding process.

[0024] Optionally, the fixing assembly includes a plurality of fixing screws, and the fixing screws are threadedly connected to the base column.

[0025] By adopting the above technical solution, the fixing screw is rotated to insert the fixing screw into the ground, so that the fixing assembly fixes the bottom column on the ground.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. Install the bottom column at the center of the construction area, and then use the moving assembly to lengthen the mounting frame, and several mounting plates and two sliding plates form the first noise reduction space. The moving assembly can also shorten the mounting frame, and the rotating part drives the mounting frame to rotate. After rotating 90°, the moving assembly lengthens the mounting frame, and several mounting plates and two sliding plates form the second noise reduction space, and then the third noise reduction space and the fourth noise reduction space are formed in sequence, until the entire construction area can be completed, so as to achieve the effect of increasing the effective noise reduction space; 2. When several installation plates are moving, the abutment plates can rise and no longer abut against the ground, thereby facilitating the movement of the installation plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the mounting frame in this embodiment when it is at its shortest length; Figure 2 is a schematic diagram of the overall structure of the mounting frame in this embodiment when it is at its longest length; Figure 3 is a schematic cross-sectional view of the protection ring and the mounting plate in this embodiment; Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle; Figure 5 is a cross-sectional schematic diagram highlighting the lifting assembly in this embodiment; Figure 6 yes Figure 2 A magnified schematic diagram of point B in the middle.

[0028] Description of reference numerals: 1, control seat; 11, bottom column; 111, fixing groove; 112, protection ring; 12, rotating column; 2, mounting frame; 3, fixing assembly; 31, fixing screw; 311, pointed head; 4, rotating member; 41, rotating motor; 5, mounting plate; 51, giving way groove; 52, mounting block; 521, thread groove; 522, second rope groove; 53, mounting groove; 54, rotating groove; 55, placement groove; 56 , moving groove; 57, first rope groove; 58, pulley groove; 59, stabilizing groove; 6, moving component; 61, moving screw; 62, moving motor; 7, first control switch; 8, second control switch; 9, abutment plate; 91, abutment block; 10, lifting component; 101, lifting fixed pulley; 102, lifting rope; 21, auxiliary rope; 22, sliding plate; 221, sliding block; 222, sliding groove; 223, opening and closing door. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] The embodiment of the present application discloses a construction site noise reduction device.

[0031] Reference Figure 1 and Figure 2 The construction site noise reduction device includes a control seat 1 and two mounting frames 2, wherein the control seat 1 includes a base column 11 and a rotating column 12, the rotating column 12 is located at the upper end of the base column 11, and the two mounting frames 2 are both installed on the rotating column 12, and the two mounting frames 2 are perpendicular to each other.

[0032] Reference Figure 3 A fixing assembly 3 is installed on the bottom column 11. The fixing assembly 3 includes a plurality of fixing screws 31. A fixing groove 111 is provided on the upper end surface of the bottom column 11 to match the threaded portion of the fixing screw 31. The fixing screw 31 is inserted into the ground by rotating the fixing screw 31 to complete the installation of the bottom column 11 on the ground. In order to facilitate the insertion of the fixing screw 31 into the ground, a pointed head 311 is provided at the lower end of the fixing screw 31.

[0033] Reference Figure 3 In this embodiment, the rotating column 12 is a cylinder, and a rotating part 4 is also installed on the control base 1. The rotating part 4 is a rotating motor 41. The rotating motor 41 is fixedly installed on the bottom column 11. The output shaft of the rotating motor 41 extends toward the upper end, and the upper end of the output shaft of the rotating motor 41 is welded to the rotating column 12.

[0034] Reference Figure 3 , start the rotating motor 41, and the rotating column 12 can rotate. Since the two mounting frames 2 are fixed on the rotating column 12, the rotating member 4 drives the mounting frames 2 to rotate.

[0035] Reference Figure 2 and Figure 3 The mounting frame 2 includes a plurality of mounting plates 5, and sound insulation materials are arranged inside the mounting plates 5. In this embodiment, four mounting plates 5 are taken as an example, and the four mounting plates 5 are parallel to each other, the mounting plate 5 closest to the rotating column 12 is welded on the rotating column 12, and the remaining mounting plates 5 slide on the adjacent mounting plates 5.

[0036] Reference Figure 2 and Figure 3 In order to improve the rotation stability of the rotating column 12, a protective ring 112 is welded on the upper end surface of the bottom column 11, and the inner wall of the protective ring 112 abuts against the outer peripheral side of the rotating column 12. A clearance groove 51 for the protective ring 112 to rotate is opened on the mounting plate 5 closest to the rotating column 12, and the bottom column 11 can also pass through the clearance groove 51. Under the abutment of the protective ring 112, the shaking of the rotating column 12 during rotation is reduced.

[0037] Reference Figure 3 and Figure 4 A mounting block 52 is welded on the side of the mounting plate 5 away from the adjacent mounting frame 2, and a mounting groove 53 is provided on the adjacent mounting plate 5 close to the control seat 1 for the mounting block 52 to slide horizontally. With the cooperation of the mounting block 52 and the mounting groove 53, the mounting plate 5 can slide on the adjacent sliding plate. When the mounting block 52 enters the mounting groove 53, the end faces of the two mounting plates 5 are exactly in contact, which improves the stability of the mounting plate 5 when sliding.

[0038] Reference Figure 2 and Figure 3 A moving assembly 6 corresponding to the mounting plate 5 is installed on the mounting frame 2, and the moving assembly 6 includes a moving screw 61 and a moving motor 62, wherein the moving screw 61 is rotatably connected to the mounting plate 5, and a rotating groove 54 for the moving screw 61 to rotate is provided on the groove walls on both sides of the mounting groove 53 close to or away from the rotating column 12, and a placement groove 55 for placing the moving motor 62 is provided on the groove wall of the rotating groove 54 close to the rotating column 12, and the output shaft of the moving motor 62 is welded to the moving screw 61, and a thread groove 521 adapted to the threaded portion of the moving screw 61 is provided on the mounting block 52.

[0039] Reference Figure 2 and Figure 3 The function of the movable screw 61 is, on the one hand, to reduce the possibility of the mounting block 52 escaping from the mounting groove 53 and to improve the stability of the mounting plate 5 when sliding. On the other hand, by starting the movable motor 62 and rotating the movable screw 61, with the cooperation of the threaded portion of the movable screw 61 and the thread groove 521, the mounting block 52 can drive the mounting plate 5 to slide toward or away from the control seat 1.

[0040] Reference Figure 2 and Figure 3 A first control switch 7 is installed on the groove wall on one side of the mounting groove 53 close to the control seat 1. The first control switch 7 is connected to a moving motor 62 on an adjacent mounting plate 5 close to the control seat 1. When the mounting block 52 abuts against the first control switch 7, the moving motor 62 on the adjacent mounting plate 5 can be started.

[0041] Reference Figure 2 and Figure 3 , start the moving motor 62 on the farthest control seat 1, and the mounting block 52 moves toward the control seat 1 until the mounting block 52 abuts against the first control switch 7. At this time, the moving motor 62 in the adjacent mounting plate 5 is started, and the adjacent mounting block 52 can move toward the control seat 1 until all the mounting blocks 52 have moved. By operating the moving motor 62 on the farthest mounting plate 5, the mounting plates 5 can move toward the control seat 1 in sequence.

[0042] Reference Figure 2 and Figure 3 A second control switch 8 is installed on the groove wall on one side of the mounting groove 53 away from the control seat 1. The second control switch 8 is connected to a moving motor 62 on an adjacent mounting plate 5 away from the control seat 1. When the mounting block 52 abuts against the second control switch 8, the moving motor 62 on the adjacent mounting plate 5 can be started.

[0043] Reference Figure 2 and Figure 3 , start the moving motor 62 closest to the control seat 1, and the mounting block 52 moves in the direction away from the control seat 1 until the mounting block 52 abuts against the second control switch 8. At this time, the moving motor 62 in the adjacent mounting plate 5 is started, and the adjacent mounting block 52 can move in the direction away from the control seat 1 until all the mounting blocks 52 have moved. By operating the moving motor 62 closest to the mounting plate 5, the mounting plates 5 can be moved away from the control seat 1 in sequence.

[0044] Reference Figure 2 and Figure 3 Under the action of the first control switch 7 and the second control switch 8, the operation steps of the operator are reduced and the convenience of using the device is improved (the first control switch 7 closest to the control seat 1 and the second control switch 8 farthest from the control seat 1 have no effect, and are only used for convenience of expression).

[0045] Reference Figure 4 and Figure 5 In order to improve the noise reduction function of the noise reduction device, general sound insulation materials need to be in contact with the ground to prevent noise from leaking from the lower end. If the mounting plate 5 is in contact with the ground, the friction force of the mounting plate 5 during the sliding process is relatively large, which affects the sliding operation of the mounting plate 5.

[0046] Reference Figure 4 and Figure 5 Therefore, a contact plate 9 is installed at the lower end of the mounting plate 5, and a movable groove 56 for the contact plate 9 to slide vertically is opened on the lower end surface of the mounting plate 5. The contact plate 9 replaces the mounting plate 5 to contact the ground, and the contact plate 9 is also provided with sound insulation material.

[0047] Reference Figure 4 and Figure 5 A lifting assembly 10 is also installed on the mounting plate 5, and the lifting assembly 10 includes a lifting fixed pulley 101 and a lifting rope 102, wherein the lifting fixed pulley 101 is connected to the mounting plate 5 by shaft rotation, a first rope groove 57 for the lifting rope 102 to move is provided on the mounting plate 5, a pulley groove 58 for the lifting fixed pulley 101 to rotate is provided in the mounting plate 5, and the lifting fixed pulley 101 is located on the side of the mounting plate 5 away from the control seat 1, a first rope groove 57 for the lifting rope 102 to move is provided on the mounting plate 5, one side of the lifting rope 102 bypasses the mounting block 52 and passes through the mounting block 52, and abuts on the side of the groove wall of the mounting groove 53 in the adjacent mounting plate 5 close to the control seat 1 away from the lifting fixed pulley 101, a second rope groove 522 for the lifting rope 102 to pass through is provided on the mounting block 52, and the other end of the lifting rope 102 abuts on the upper end surface of the abutment plate 9.

[0048] Reference Figure 4 and Figure 5 When the mounting block 52 slides toward the control seat 1, the lifting rope 102 pulls the abutment plate 9 upward, and the abutment plate 9 no longer abuts against the ground. When the mounting block 52 slides toward the direction away from the control seat 1, the abutment plate 9 can descend under the action of gravity. When the mounting block 52 abuts against the wall of the mounting slot 53 away from the control seat 1, the abutment plate 9 just abuts against the ground.

[0049] Reference Figure 4 and Figure 5 The lifting assembly 10 can ensure that the abutment plate 9 no longer abuts against the ground when the mounting block 52 is moving, and when the mounting plate 5 is located at the side farthest from the control seat 1 , the abutment plate 9 can just abut against the ground.

[0050] Reference Figure 4 and Figure 5 Since the lifting rope 102 is in contact with the abutment plate 9 at only one point, the abutment plate 9 is not very stable during the sliding process and may get stuck. Two auxiliary ropes 21 are arranged on the side of the lifting rope 102 close to the abutment plate 9. The two auxiliary ropes 21 are respectively in contact with the two sides of the abutment plate 9 in the length direction, so that the auxiliary ropes 21 are used to improve the stability of the lifting and lowering of the abutment plate 9.

[0051] Reference Figure 4 and Figure 5In order to further improve the sliding stability of the abutment plate 9, a plurality of abutment blocks 91 are provided on the side wall of the abutment plate 9, and a plurality of stabilizing grooves 59 are provided on the mounting plate 5 for the abutment blocks 91 to slide vertically. With the cooperation of the abutment blocks 91 and the stabilizing grooves 59, the sliding path and shape of the abutment plate 9 are both in a stable state.

[0052] Reference Figure 1 and Figure 2 A sliding plate 22 is fixedly mounted on the mounting plate 5 farthest from the control seat 1, and a sound insulation material is also arranged in the sliding plate 22. The two sliding plates 22 are parallel to each other.

[0053] Reference Figure 6 A sliding block 221 is fixedly mounted on one of the sliding plates 22, and a sliding groove 222 is provided on the other sliding plate 22 for the sliding block 221 to slide horizontally. When the sliding block 221 enters the sliding groove 222, the end surfaces of the two sliding plates 22 fit together.

[0054] Reference Figure 1 and Figure 2 Since the two mounting frames 2 are perpendicular to each other, when the mounting plate 5 slides, the two sliding plates 22 can just move towards or away from each other, and the sliding plates 22 abutting against the ground can improve the stability of the mounting frame 2 during the rotation process.

[0055] Reference Figure 1 and Figure 2 In order to facilitate the operator to enter and exit, an opening and closing door 223 is provided on one of the sliding plates 22.

[0056] The implementation principle of a construction site noise reduction device in the embodiment of the present application is as follows: After determining the construction area, install the bottom column 11 at the center of the construction area, and then fix the bottom column 11 to the ground through the fixing screw 31, and start the two moving motors 62 closest to the control seat 1 at the same time. With the cooperation of the mounting block 52, the moving screw 61 and the second control switch 8, several mounting plates 5 move in a direction away from the control seat 1 in turn, and the sliding plate 22 can move in a direction away from each other. During the sliding process of the mounting plate 5, with the cooperation of the lifting assembly 10, the abutment plate 9 is lowered until the abutment plate 9 abuts against the ground. When the mounting plate 5 moves to the farthest distance, the first noise reduction space is formed by several mounting plates 5 (the abutment plate 9 at the lower end of the mounting plate 5) and the two sliding plates 22, and the construction personnel can carry out construction in this noise reduction space.

[0057] When the construction position needs to be changed, the two moving motors 62 farthest from the control seat 1 are started at the same time. With the cooperation of the mounting block 52, the moving screw 61 and the first control switch 7, several mounting plates 5 move in the direction close to the control seat 1 in turn, and the sliding plate 22 can move in the direction close to each other. During the sliding of the mounting plate 5, with the cooperation of the lifting assembly 10, the abutment plate 9 rises, and at this time, the abutment plate 9 no longer abuts on the ground. When the mounting plate 5 moves to the position closest to the control seat 1, the rotating motor 41 is started at this time, the rotating column 12 rotates 90°, and then the moving assembly 6 is started again to move the mounting plate 5 to the farthest distance. At this time, the second noise reduction space is formed by several mounting plates 5 (the abutment plate 9 at the lower end of the mounting plate 5) and the two sliding plates 22, and the third noise reduction space and the fourth noise reduction space are formed in turn, until the construction of the entire construction area can be completed, so as to achieve the effect of improving the effective noise reduction space.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction site noise reduction device, characterized in that: The invention comprises a control seat (1) and two mounting frames (2), wherein the control seat (1) comprises a base column (11) and a rotating column (12), the two mounting frames (2) are arranged on the rotating column (12), the two mounting frames (2) are perpendicular to each other, the mounting frames (2) comprise a plurality of mounting plates (5) parallel to each other, the mounting plates (5) slide on adjacent mounting plates (5), a sliding plate (22) is arranged on the mounting plate (5) farthest from the control seat (1), the two sliding plates (22) are parallel to each other, and the sliding plates (22) can The control seat (1) is provided with a rotating member (4) for controlling the two mounting frames (2) to rotate simultaneously, the rotation center line of the mounting frame (2) extends in the vertical direction, the mounting frame (2) is provided with a plurality of moving components (6) for controlling the mounting plate (5) to slide towards or away from the adjacent mounting plate (5), the mounting frame (2) and the sliding plate (22) are both provided with sound insulation material, and the control seat (1) is provided with a fixing component (3) for fixing the base column (11).

2. A construction site noise reduction device according to claim 1, characterized in that: A mounting block (52) is provided on a side of the mounting plate (5) away from the adjacent mounting frame (2), and a mounting groove (53) for the mounting block (52) to slide in a horizontal direction is provided on the adjacent mounting plate (5) close to the control seat (1).

3. A construction site noise reduction device according to claim 2, characterized in that: The moving assembly (6) comprises a moving screw (61) and a moving motor (62) arranged on the mounting plate (5); the moving screw (61) is arranged on an output shaft of the moving motor (62); and the mounting block (52) is provided with a thread groove (521) adapted to the threaded portion of the moving screw (61).

4. A construction site noise reduction device according to claim 3, characterized in that: A first control switch (7) is provided on a groove wall of one side of the mounting groove (53) close to the control seat (1), and when the mounting block (52) abuts against the first control switch (7), the moving motor (62) on the adjacent mounting plate (5) close to the control seat (1) is started.

5. A construction site noise reduction device according to claim 4, characterized in that: A second control switch (8) is provided on a groove wall of the mounting groove (53) away from the control seat (1), and when the mounting block (52) abuts against the second control switch (8), the moving motor (62) on the adjacent mounting plate (5) away from the control seat (1) is started.

6. A construction site noise reduction device according to claim 1, characterized in that: The rotating member (4) is a rotating motor (41), and an output shaft of the rotating motor (41) is arranged on the rotating column (12).

7. A construction site noise reduction device according to claim 2, characterized in that: An abutment plate (9) is provided at the lower end of the mounting plate (5), and a lifting assembly (10) is provided on the mounting plate (5) for controlling the abutment plate (9) to move in a vertical direction when the mounting block (52) moves toward or away from the control seat (1).

8. A construction site noise reduction device according to claim 7, characterized in that: The lifting assembly (10) comprises a lifting fixed pulley (101) and a lifting rope (102) wound around the lifting fixed pulley (101); the lifting fixed pulley (101) is arranged on a side of the mounting plate (5) away from the control seat (1); one side of the lifting rope (102) passes through the mounting block (52) and enters the mounting groove (53) in the adjacent mounting plate (5) close to the control seat (1), and abuts against a groove wall on one side of the mounting groove (53) close to the lifting fixed pulley (101); the other end of the lifting rope (102) is arranged on the upper end surface of the abutment plate (9).

9. A construction site noise reduction device according to claim 8, characterized in that: The side wall of the abutment plate (9) is provided with a plurality of abutment blocks (91), and the mounting plate (5) is provided with a plurality of stabilizing grooves (59) for the abutment blocks (91) to slide in the vertical direction.

10. A construction site noise reduction device according to claim 1, characterized in that: The fixing assembly (3) comprises a plurality of fixing screws (31), wherein the fixing screws (31) are threadedly connected to the base column (11).

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