Environment-friendly construction site multi-mode efficient dust control device

Abstract

The application relates to an environment-friendly multi-mode high-efficiency dust raising control device for a construction site. When a rotating ring base is fixed on a cylindrical base through a locking assembly, a rotating disc drives a fog gun barrel and a lifting base to synchronously rotate. At this time, a guide flange slides along a wavy guide groove, drives the lifting base to move up and down, and then drives the fog gun barrel to rotate and swing up and down under the transmission of a first electric push rod, so that a "rotation + swing" compound spraying mode is formed, a large-area low-altitude diffusion dust raising area can be quickly covered, and a dust falling blind area is eliminated. When the rotating ring base is unlocked through an unlocking connecting assembly and is connected with the lifting base, the rotating disc drives the fog gun barrel, the lifting base and the rotating ring base to synchronously rotate as a whole, the wavy guide groove is relatively static with the guide flange, and the fog gun barrel only keeps rotating and spraying, so that a "only rotation" directional mode is formed, the mode is suitable for precise treatment of local concentrated dust raising, the two modes can be flexibly switched, the mode can be quickly adapted according to dust raising diffusion characteristics, and dust falling pertinence is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of construction engineering technology, and in particular to an environmentally friendly multi-mode high-efficiency dust control device for construction sites. Background Technology

[0002] Construction activities, such as building construction, road construction, and mining, generate a large amount of dust. This dust not only reduces the air quality in and around the construction area, posing a serious threat to the respiratory health of on-site workers, but may also spread to surrounding residential and commercial areas, causing environmental problems such as smog and reduced visibility. This does not meet the requirements of current environmentally friendly construction and is subject to strict control by environmental regulatory authorities.

[0003] To control construction dust, fog cannons are widely used as the core dust suppression equipment in the industry. Traditional fog cannons typically consist of a fixed base, a fog cannon tube, and a simple angle adjustment structure, which has limitations in their use.

[0004] Traditional fog cannons typically only offer a fixed-height rotating spray function, or can only achieve a small range of pitch angle adjustments via a single mechanism, failing to simultaneously achieve a combined "rotation + up-and-down oscillation" motion. For example, when dealing with large-area, low-altitude dust storms, the fog cannon needs to rotate while simultaneously oscillating up and down to expand the spray coverage; conversely, when dealing with locally concentrated dust storms that don't require extensive oscillation, the fog cannon only needs to maintain a rotating spray. Traditional devices cannot switch operating modes according to the characteristics of dust dispersion, resulting in incomplete spray coverage in some scenarios. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the problems existing in the existing related technologies. To this end, the present invention proposes a dust control device that can achieve precise switching of multiple modes, is easy to operate, and is highly efficient and environmentally friendly.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An environmentally friendly, multi-mode, high-efficiency dust control device for construction sites includes a cylindrical base, a rotating disk rotatably mounted on the upper end of the cylindrical base, a support on the rotating disk, a mist cannon rotatably mounted on the support, a lifting seat that moves up and down on the end face of the rotating disk, a first electric push rod hinged to the upper end of the lifting seat, the push rod end of the first electric push rod being hinged to the lower side of the mist cannon, a rotating ring seat rotatably fitted on the outer wall of the cylindrical base, a corrugated guide groove surrounding the outer wall of the rotating ring seat, a guide flange provided on one side of the lower end of the lifting seat, the guide flange being located within the corrugated guide groove, a locking component also provided on the rotating ring seat for locking the rotating ring seat onto the cylindrical base, and an unlocking connection component provided at the lower end of the lifting seat for unlocking the locking component, allowing the rotating ring seat to rotate relative to the cylindrical base, and simultaneously connecting with the rotating ring seat after unlocking.

[0008] In some embodiments, the locking assembly includes an extension seat on the front side of the rotating ring seat, a sliding block that slides back and forth on the front side of the extension seat, a connecting block extending out of the extension seat from the lower side of the sliding block and provided thereon, a locking post on the front side of the connecting block, an L-shaped extension block on the front side of the cylindrical base, a locking hole on the front side of the L-shaped extension block, the rotating ring seat being in a locked state when the locking post is inserted into the locking hole, and a spring being provided at the rear end of the sliding block to keep the sliding block in a forward position.

[0009] In some embodiments, when the locking pin is inserted into the locking hole, the front end of the sliding block extends out of the extension seat.

[0010] In some embodiments, the unlocking connection assembly includes an unlocking push block that slides back and forth on the rear side of the lower end of the lifting seat. A pushing mechanism is also provided on the lifting seat. The pushing mechanism is used to drive the unlocking push block to slide backward against the extension seat. When the unlocking push block moves backward, it pushes against the sliding block, thereby causing its locking pin to move backward and disengage from the locking hole.

[0011] In some embodiments, the pushing mechanism includes a sliding vertical block that slides up and down on a lifting seat, a guide rod is provided at the lower end of the sliding vertical block, a guide groove is provided on the unlocking push block, the guide rod is located in the guide groove, a mounting frame is provided at the upper end of the lifting seat, a second electric push rod is provided on the mounting frame, and the push rod end of the second electric push rod is connected to the sliding vertical block.

[0012] In some embodiments, a gear ring is fixedly provided at the upper end of the cylindrical base, a rotating ring is rotatably installed inside the gear ring, a rotating disk is installed on the rotating ring, a motor is provided on the rotating disk, and a drive gear that meshes with the gear ring is provided on the output shaft of the motor.

[0013] In some embodiments, the support includes uprights spaced apart on the left and right, bearing seats are provided at the upper ends of both uprights, and a rotating shaft is connected between the two bearing seats. The fog cannon includes a cannon connecting frame located on the lower side of the fog cannon. The cannon connecting frame is rotatably mounted on the rotating shaft. A hinge frame extends forward from the cannon connecting frame, and the push rod end of the first electric push rod is hinged to the hinge frame.

[0014] In some embodiments, a retaining ring is provided at the front opening of the fog cannon, a circular pipe is provided inside the retaining ring, a plurality of nozzles are evenly distributed along the circumference of the circular pipe, and a water pipe assembly is connected to the lower side of the circular pipe, and a centrifugal pump is connected to the water pipe assembly.

[0015] In some embodiments, a limit switch mounting bracket is provided at the lower end of the rotary disk, and a limit switch is provided on the limit switch mounting bracket.

[0016] In some embodiments, an electrical control box is also provided on the rotating disk.

[0017] 1. This device utilizes a core linkage structure of "lifting seat + corrugated guide groove + guide flange," combined with locking and unlocking connection components, to create two efficient operating modes: When the rotating ring seat is fixed to the cylindrical base via the locking component, the rotating disk drives the mist cannon and lifting seat to rotate synchronously. At this time, the guide flange slides along the corrugated guide groove, driving the lifting seat to move up and down. Then, under the transmission of the first electric push rod, the mist cannon rotates and swings up and down simultaneously, forming a "rotation + swing" composite spray mode, which can quickly cover large areas of low-altitude dust diffusion and eliminate dust suppression blind spots. When the rotating ring seat is unlocked and connected to the lifting seat via the unlocking connection component, the rotating disk drives the mist cannon, lifting seat, and rotating ring seat to rotate synchronously as a whole. The corrugated guide groove and guide flange remain relatively stationary, and the mist cannon only maintains rotational spraying, forming a "rotation only" directional mode, suitable for precise control of localized concentrated dust. The two modes can be flexibly switched, quickly adapting to the characteristics of dust diffusion and significantly improving the targeting of dust suppression.

[0018] 2. The device's mode switching can be accomplished simply by unlocking the connecting component: Unlocking the connecting component unlocks the locking component, releasing the fixed relationship between the rotating ring seat and the cylindrical base; simultaneously, it connects the lifting seat and the rotating ring seat, eliminating the need for separate operation of the locking and connecting mechanisms, thus simplifying the mode switching process. Operators can quickly switch between "rotation + swing" and "rotation only" modes without complex parameter settings or mechanical adjustments, reducing operation time and workload, making it particularly suitable for applications with frequently changing dusty environments during construction. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the dust control device of the present invention.

[0020] Figure 2 This is a schematic diagram of the main structure of the dust control device of the present invention.

[0021] Figure 3 This is a cross-sectional structural schematic diagram of the dust control device of the present invention.

[0022] Figure 4 For the present invention Figure 3 Enlarged diagram of point A.

[0023] Figure 5 This is a schematic diagram of the unlocking connection component unlocking the locking component according to the present invention.

[0024] Figure 6 This is a cross-sectional structural schematic diagram of the lifting seat of the present invention. Detailed Implementation

[0025] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0026] like Figures 1-6The illustrated environmentally friendly multi-mode high-efficiency dust control device for construction sites includes a cylindrical base 1, a rotating disk 2 rotatably mounted on the upper end of the cylindrical base 1, a support 3 mounted on the rotating disk 2, a mist cannon 4 rotatably mounted on the support 3, a lifting seat 5 that moves up and down on the end face of the rotating disk 2, a first electric push rod 6 hinged to the upper end of the lifting seat 5, the push rod end of the first electric push rod 6 being hinged to the lower side of the mist cannon 4, and a rotating ring seat 7 rotatably sleeved on the outer wall of the cylindrical base 1. The outer wall of the 7 is surrounded by a wave-patterned guide groove 8. A guide flange 9 is provided on one side of the lower end of the lifting seat 5. The guide flange 9 is located in the wave-patterned guide groove 8. A locking component is also provided on the rotating ring seat 7. The locking component is used to lock the rotating ring seat 7 onto the cylindrical base 1. An unlocking connection component is provided at the lower end of the lifting seat 5. The unlocking connection component is used to unlock the locking component, so that the rotating ring seat 7 can rotate relative to the cylindrical base 1. After unlocking, it is simultaneously connected to the rotating ring seat 7.

[0027] Specifically, a cylindrical base 1 is machined, made of cast iron to ensure stability, and its lower end can be fixed to the hardened ground of the construction site or a mobile support by expansion bolts; a circular rotating disk 2 is rotatably installed on the upper end face of the cylindrical base 1 via bearings, and a support 3 is welded to the upper surface of the rotating disk 2, the height of which is designed according to the specifications of the fog cannon 4; the fog cannon 4 is rotatably installed on the upper end of the support 3 via a rotating shaft; a rectangular guide groove is opened on the end face of the rotating disk 2, and the lifting seat 5 is a rectangular metal block, the lower end of which is embedded in the guide groove, and the vertical movement is realized by a linear guide rail; a hinge ear plate is welded to the upper end of the lifting seat 5, and the cylinder end of the first electric push rod 6 is hinged to the ear plate by a pin; a cannon connecting frame 74 and a hinge frame 75 are welded to the lower side of the fog cannon 4, and the push rod end of the first electric push rod 6 is hinged to the hinge frame 75 by a pin, and the extension and retraction of the push rod can drive the fog cannon 4 to adjust its pitch.

[0028] The device controls the operating mode through the "locking component status": when the locking component locks the rotating ring seat 7 onto the cylindrical base 1, the rotating ring seat 7 remains stationary; when the rotating disk 2 rotates, it drives the lifting seat 5 to rotate synchronously, and the guide flange 9 slides along the fixed corrugated guide groove 8. Due to the corrugated structure of the guide groove, the guide flange 9 drives the lifting seat 5 to move up and down reciprocally, and then drives the fog cannon 4 to rotate and swing up and down at the same time through the first electric push rod 6, forming a "wide coverage mode".

[0029] When the unlocking connection component unlocks the locking component and connects the lifting seat 5 with the rotating ring seat 7, the rotating disk 2 rotates, causing the lifting seat 5 and the rotating ring seat 7 to rotate synchronously. The guide flange 9 and the corrugated guide groove 8 do not slide relative to each other, the height of the lifting seat 5 is fixed, and the fog cannon 4 only rotates with the rotating disk 2, forming a "directional spray mode".

[0030] In addition, the first electric push rod 6 independently controls the pitch angle of the fog cannon 4: when the push rod extends, the fog cannon 4 tilts upward around the rotation axis on the bracket 3, increasing the spray angle; when the push rod retracts, the fog cannon 4 tilts downward, decreasing the spray angle, which can be combined with the two core modes to further optimize the spray direction.

[0031] In this invention, the locking assembly includes an extension seat 21 on the front side of the rotating ring seat 7, a sliding block 22 sliding back and forth on the front side of the extension seat 21, a connecting block 23 extending out of the extension seat 21 from the lower side of the sliding block 22, a locking pin 24 on the front side of the connecting block 23, an L-shaped extension block 25 on the front side of the cylindrical base 1, and a locking hole 26 on the front side of the L-shaped extension block 25. When the locking pin 24 is inserted into the locking hole 26, the rotating ring seat 7 is in a locked state. A spring 27 is also provided at the rear end of the sliding block 22 to keep the sliding block 22 in a forward position. When the locking pin 24 is inserted into the locking hole 26, the front end of the sliding block 22 extends out of the extension seat 21.

[0032] Specifically, a rectangular extension seat 21 is integrally cast or welded to the front side of the rotating ring seat 7, and a rectangular sliding cavity with front and rear passage is opened inside the extension seat 21; the sliding block 22 is a rectangular metal block that fits with the sliding cavity with a clearance and can slide back and forth along the sliding cavity; an L-shaped connecting block 23 is welded to the lower side of the sliding block 22, and a cylindrical locking pin 24 is welded to the front end of the connecting block 23; an L-shaped extension block 25 is welded to the front side of the cylindrical base 1, and a locking hole 26 matching the locking pin 24 is opened at the front end of the L-shaped extension block 25; a spring 27 is installed at the rear end of the sliding cavity of the extension seat 21, one end of the spring 27 abuts against the rear end of the sliding cavity, and the other end abuts against the rear end of the sliding block 22. In the natural state, the spring 27 pushes the sliding block 22 forward, so that the locking pin 24 is inserted into the locking hole 26, and at the same time, the front end of the sliding block 22 extends out of the extension seat 21.

[0033] In the locked state, the spring 27 is in a naturally extended state, pushing the sliding block 22 to slide forward. The locking pin 24 is inserted into the locking hole 26 of the L-shaped extension block 25, and the rotating ring seat 7 is restricted from rotating and fixed relative to the cylindrical base 1, providing a fixed reference for the "wide coverage mode".

[0034] When the unlocking connection component pushes the sliding block 22 backward, the sliding block 22 compresses the spring 27, the locking pin 24 exits from the locking hole 26, the rotating ring seat 7 is unlocked, and can rotate synchronously with the lifting seat 5.

[0035] See Figures 4-6As shown, the unlocking connection assembly includes an unlocking push block 41 that slides back and forth on the rear side of the lower end of the lifting seat 5. A pushing mechanism is also provided on the lifting seat 5. The pushing mechanism is used to drive the unlocking push block 41 to slide backward against the extension seat 21. When the unlocking push block 41 moves backward, it pushes the sliding block 22, thereby causing its locking pin 24 to move backward and disengage from the locking hole 26.

[0036] Furthermore, the pushing mechanism includes a sliding vertical block 51 that slides up and down on the lifting seat 5. A guide rod 52 is provided at the lower end of the sliding vertical block 51. A guide groove 53 is provided on the unlocking push block 41. The guide rod 52 is located in the guide groove 53. A mounting frame 54 is provided at the upper end of the lifting seat 5. A second electric push rod 55 is provided on the mounting frame 54. The push rod end of the second electric push rod 55 is connected to the sliding vertical block 51.

[0037] Unlocking process of the locking component: Activate the second electric push rod 55. The push rod extends and pushes the sliding vertical block 51 to slide downward. The guide rod 52 slides along the guide inclined groove 53. Due to the inclined groove angle design, the guide rod 52 generates a backward thrust on the inclined groove, which drives the unlocking push block 41 to slide backward. The push block pushes the sliding block 22 to compress the spring 27 backward. The locking pin 24 exits from the locking hole 26, completing the unlocking.

[0038] Connection process: When the unlocking push block 41 slides backward, the rear end of the push block abuts against the side wall of the extension seat 21 of the rotating ring seat 7, realizing a rigid connection between the lifting seat 5 and the rotating ring seat 7, and the two rotate synchronously.

[0039] This allows for the simultaneous execution of two actions—"unlocking the locking component" and "connecting the lifting seat and the rotating ring seat"—through a single set of actuators, simplifying the operation and avoiding the inefficiency caused by separate steps.

[0040] See Figure 2 , Figure 3 As shown, a gear ring 61 is fixedly provided at the upper end of the cylindrical base 1, and a rotating ring 62 is rotatably installed inside the gear ring 61. The rotating disk 2 is installed on the rotating ring 62, and a motor 63 is provided on the rotating disk 2. A drive gear 64 that meshes with the gear ring 61 is provided on the output shaft of the motor 63.

[0041] The electrical control box controls the start of the geared motor 63, and the motor output shaft drives the drive gear 64 to rotate. Because the drive gear 64 meshes with the fixed gear ring 61, the gear transmission generates a reverse torque, which drives the rotating disk 2 to rotate around the cylindrical base 1.

[0042] Thus, in the "wide coverage mode", the rotating disk 2 drives the lifting seat 5 to rotate, and the guide flange 9 slides along the fixed corrugated guide groove 8, realizing the rotation and swing of the fog cannon 4; in the "directional spray mode", the rotating disk 2 drives the lifting seat 5 and the rotating ring seat 7 to rotate synchronously, and the fog cannon 4 only rotates.

[0043] See Figures 1-3 As shown, the bracket 3 includes uprights 71 spaced apart on the left and right, and bearing seats 72 are provided at the upper ends of both uprights 71. A rotating shaft 73 is connected between the two bearing seats 72. The fog cannon 4 includes a cannon connecting frame 74 located on the lower side of the fog cannon 4. The cannon connecting frame 74 is rotatably mounted on the rotating shaft 73. A hinge frame 75 extends forward from the cannon connecting frame 74. The push rod end of the first electric push rod 6 is hinged to the hinge frame 75.

[0044] Specifically, the uprights 71 of the support 3 are made of seamless steel pipes, and two uprights 71 are welded to the rotating disk 2 at intervals. The upper end of the uprights 71 is welded with a bearing seat 72, and the rotating shaft 73 is installed in the bearing seat 72 through the bearing, so that it can rotate freely. A U-shaped cannon connecting frame 74 is welded to the lower side of the fog cannon 4. The two side walls of the cannon connecting frame 74 are connected to the rotating shaft 73, so that the fog cannon 4 pitches around the rotating shaft 73. A hinge frame 75 is welded to the front side of the cannon connecting frame 74. A hinge hole is opened on the hinge frame 75, and the push rod end of the first electric push rod 6 is connected to the hinge hole through a pin.

[0045] Thus, when the first electric push rod 6 extends or retracts, it generates an upward or downward thrust on the articulated frame 75, causing the barrel connecting frame 74 to rotate around the rotating shaft 73, thereby enabling the fog cannon barrel 4 to achieve pitch angle adjustment.

[0046] In this invention, a retaining ring 81 is provided at the front opening of the fog cannon 4, and a circular pipe 82 is provided inside the retaining ring 81. Several nozzles 83 are evenly distributed along the circumference of the circular pipe 82. A water pipe assembly 84 is also connected to the lower side of the circular pipe 82, and a centrifugal pump 85 is connected to the water pipe assembly 84.

[0047] Start the centrifugal pump 85, and the water flows through the water pipe group 84 to the circular pipe 82. Under high pressure, the water is atomized into fine water mist through the nozzle 83. The fan inside the fog cannon 4 (not labeled, standard configuration) generates airflow, which blows the water mist out from the front end of the fog cannon 4 to form a directional spray flow.

[0048] Of course, the spray structure of the fog cannon 4 is the existing conventional setting, and will not be described in detail here.

[0049] See Figure 1 , 2As shown, a limit switch mounting bracket 91 is provided at the lower end of the rotary disk 2, and a limit switch 92 is provided on the limit switch mounting bracket 91.

[0050] Specifically, a U-shaped limit switch mounting bracket 91 is welded to the lower end face of the rotating disk 2, which does not affect the movement of other components. Two limit switches 92 are fixed to the upper surface of the horizontal section of the limit switch mounting bracket 91 by bolts. The two limit switches 92 are arranged at intervals along the circumference of the rotating disk 2. A rectangular trigger block (not marked) is welded on the cylindrical base 1. The height of the trigger block is the same as the contact height of the limit switch 92. When the rotating disk 2 rotates to the limit position, the trigger block contacts the contact of the limit switch 92, triggering the switch to operate.

[0051] In this invention, an electrical control box 93 is also provided on the rotating disk 2.

[0052] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly multi-mode high-efficiency dust control device for construction sites, comprising a cylindrical base (1), a rotating disk (2) rotatably mounted on the upper end of the cylindrical base (1), a support (3) provided on the rotating disk (2), and a fog cannon (4) rotatably mounted on the support (3), characterized in that: A lifting seat (5) is movable up and down on the end face of the rotating disk (2). A first electric push rod (6) is hinged to the upper end of the lifting seat (5). The push rod end of the first electric push rod (6) is hinged to the lower side of the fog cannon (4). A rotating ring seat (7) is rotatably sleeved on the outer wall of the cylindrical base (1). A corrugated guide groove (8) is surrounded on the outer wall of the rotating ring seat (7). A guide flange (9) is provided on one side of the lower end of the lifting seat (5). The guide flange (9) is located in the corrugated guide groove (8). The lifting seat (5) is also provided with a locking component, which is used to lock the rotating ring seat (7) onto the cylindrical base (1). An unlocking connection component is provided at the lower end of the lifting seat (5), which is used to unlock the locking component so that the rotating ring seat (7) can rotate relative to the cylindrical base (1). After unlocking, it is simultaneously connected to the rotating ring seat (7). The locking component includes an extension seat (21) on the front side of the rotating ring seat (7). A sliding block (22) slides back and forth on the front side of the extension seat (21). (22) extends from the lower side of the extension seat (21) and is provided with a connecting block (23). A locking pin (24) is provided on the front side of the connecting block (23). An L-shaped extension block (25) is provided on the front side of the cylindrical base (1). A locking hole (26) is provided on the front side of the L-shaped extension block (25). When the locking pin (24) is inserted into the locking hole (26), the rotating ring seat (7) is in a locked state. A spring (27) is also provided at the rear end of the sliding block (22) to keep the sliding block (22) in a forward position. When the locking pin (24) is inserted into the locking hole (26), the front end of the sliding block (22) extends out of the extension seat (21). The unlocking connection assembly includes an unlocking push block (41) that slides back and forth on the rear side of the lower end of the lifting seat (5). A pushing mechanism is also provided on the lifting seat (5). The pushing mechanism is used to drive the unlocking push block (41) to slide backward against the extension seat (21). When the unlocking push block (41) moves backward, it pushes the sliding block (22), thereby causing the locking pin (24) to move backward and disengage from the locking hole (26).

2. The environmentally friendly multi-mode high-efficiency dust control device for construction sites according to claim 1, characterized in that: The pushing mechanism includes a sliding vertical block (51) that slides up and down on the lifting seat (5). A guide rod (52) is provided at the lower end of the sliding vertical block (51). A guide groove (53) is provided on the unlocking push block (41). The guide rod (52) is located in the guide groove (53). A mounting frame (54) is provided at the upper end of the lifting seat (5). A second electric push rod (55) is provided on the mounting frame (54). The push rod end of the second electric push rod (55) is connected to the sliding vertical block (51).

3. The environmentally friendly multi-mode high-efficiency dust control device for construction sites according to claim 1, characterized in that: A gear ring (61) is fixedly provided at the upper end of the cylindrical base (1). A rotating ring sleeve (62) is rotatably installed inside the gear ring (61). The rotating disk (2) is installed on the rotating ring sleeve (62). A motor (63) is provided on the rotating disk (2). A drive gear (64) that meshes with the gear ring (61) is provided on the output shaft of the motor (63).

4. The environmentally friendly multi-mode high-efficiency dust control device for construction sites according to claim 1, characterized in that: The bracket (3) includes uprights (71) spaced apart on the left and right. Each of the two uprights (71) is provided with a bearing seat (72) at its upper end. A rotating shaft (73) is connected between the two bearing seats (72). The fog cannon (4) includes a cannon connecting frame (74) located on the lower side of the fog cannon (4). The cannon connecting frame (74) is rotatably mounted on the rotating shaft (73). A hinge frame (75) extends forward on the cannon connecting frame (74). The push rod end of the first electric push rod (6) is hinged to the hinge frame (75).

5. The environmentally friendly multi-mode high-efficiency dust control device for construction sites according to claim 1, characterized in that: A retaining ring (81) is provided at the front end opening of the fog cannon (4), and a circular pipe (82) is provided inside the retaining ring (81). Several nozzles (83) are evenly distributed along the circumference of the circular pipe (82). A water pipe assembly (84) is also connected to the lower side of the circular pipe (82), and a centrifugal pump (85) is connected to the water pipe assembly (84).

6. The environmentally friendly multi-mode high-efficiency dust control device for construction sites according to claim 1, characterized in that: A limit switch mounting bracket (91) is provided at the lower end of the rotary disk (2), and a limit switch (92) is provided on the limit switch mounting bracket (91).

7. The environmentally friendly multi-mode high-efficiency dust control device for construction sites according to claim 1, characterized in that: An electrical control box (93) is also provided on the rotating disk (2).

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