Building construction dust reducing device

Abstract

The application belongs to the technical field of dust falling devices, and particularly relates to a building construction dust falling device, which comprises split plate cars, a spray head support seat and a support table. The split plate cars are provided with two folding support rods, one of the split plate cars is provided with a connecting assembly, the two folding support rods are fixed through the connecting assembly and form a complete support column, a plurality of first atomizing spray heads are arranged on the two folding support rods, the spray head support seat is rotatably connected with the support table and can move along the support column, the upper ends of the two folding support rods are hingedly connected with the support table, a swing mechanism is arranged on the support table, the swing mechanism is connected with a yoke rod, a yoke rod matched with the yoke rod is fixed on the spray head support seat, and the second atomizing spray head is fixedly connected with the spray head support seat. The building construction dust falling device is designed in cooperation with the split plate cars, the folding support rods and the spray head support seat, and flexible dust falling operation in different construction scenes is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of dust suppression devices, and in particular relates to a dust suppression device for construction. Background Art

[0002] Dust pollution has long been a concern during construction. Traditional dust suppression devices suffer from numerous shortcomings, making them difficult to meet diverse construction dust reduction needs. Many devices have limited functionality and lack the flexibility to adjust for high-altitude dust reduction operations, as well as those near fences and foundation pits. This requires different equipment for different scenarios, increasing construction costs and complicating equipment management. Furthermore, the nozzles of some dust suppression devices are fixed in position, making it impossible to effectively adjust the spray range, thus compromising dust reduction effectiveness. Furthermore, water quality in construction areas is often poor, with high levels of impurities, which can easily lead to nozzle blockage, compromising the proper functioning of dust suppression devices. Traditional devices are often difficult to operate, requiring significant time and effort to prepare and repair nozzles. Furthermore, the drive mechanisms of some dust suppression devices are poorly designed, failing to efficiently power multiple functional components simultaneously. This results in low overall device efficiency and makes them difficult to adapt to complex construction environments and the frequent dust reduction demands. These issues have led to the development of new dust suppression devices for construction. Summary of the Invention

[0003] In response to the above technical problems, the present invention provides a construction dust reduction device, which aims to solve the problem that existing construction dust reduction devices are difficult to take into account dust reduction operations at high places, fences, and foundation pits, and are inconvenient to maintain.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A construction dust suppression device includes a split truck, a nozzle support seat, and a support platform; the split trucks are provided with two, each of which is fixed with a folding support rod, one of which is provided with a connecting assembly, and the two folding support rods are fixed by the connecting assembly to form a complete support column; the two folding support rods are each provided with a plurality of first atomizing nozzles;

[0006] The nozzle support seat is rotatably connected to the support platform and can move along the support column; the upper ends of the two folding support rods are hinged to the support platform; a swing mechanism is provided on the support platform, the swing mechanism is connected to a fork rod, and a lever that cooperates with the fork rod is fixed on the nozzle support seat; a second atomizing nozzle is fixedly connected to the nozzle support seat;

[0007] The support platform is fixedly connected to a first bracket, and the first bracket is rotatably connected to a winding drum; the support platform is rotatably connected to a second bracket, and the second bracket is rotatably connected to a support wheel; a traction rope is wound around the winding drum, and one end of the traction rope passes around the support wheel and is fixedly connected to the nozzle support seat; a limiting component is provided on the first bracket, and the rotation of the winding sleeve is limited by the limiting component;

[0008] The support platform is connected with a driving mechanism via a lifting mechanism, and the lifting mechanism drives the driving mechanism to move, so that the driving mechanism is connected to the swing mechanism or the winding drum.

[0009] The connecting assembly includes a bidirectional screw and a slider, and the bidirectional screw is rotationally connected to the split cart; there are two sliders, the two sliders are arranged opposite to each other and are both slidingly connected to the split cart, and the two sliders are both threadedly connected to the bidirectional screw; both sliders are fixedly connected with a fixed clamping ring, and the two fixed clamping rings are arranged opposite to each other.

[0010] The driving mechanism comprises a double-output shaft motor, an upper driving gear and a lower driving gear, wherein the upper driving gear and the lower driving gear are fixedly connected to the upper and lower ends of the output shaft of the double-output shaft motor respectively; the winding drum is provided with a first driven gear for engaging with the upper driving gear; the swing mechanism is connected to a second driven gear for engaging with the lower driving gear.

[0011] The lifting mechanism includes a lifting plate and a telescopic cylinder. The lifting plate is slidably connected to the guide rod on the support platform, and the lifting plate is fixedly connected to the housing of the double-output shaft motor; the two ends of the telescopic cylinder are respectively connected to the lifting plate and the support platform.

[0012] The lifting plate is provided with a sliding column connected to the telescopic cylinder, the sliding column is slidably connected to the lifting plate, and a buffer spring is provided between the sliding column and the lifting plate.

[0013] The limiting assembly includes a limiting pull rod and a return spring; the limiting pull rod is slidably connected to the first bracket, and the two ends of the return spring are hinged to the limiting pull rod and the first bracket respectively; the winding drum is provided with a plurality of slots connected to the limiting pull rod; the limiting pull rod is fixedly connected to a top plate that cooperates with the lifting plate.

[0014] The swing mechanism includes a swing ring and a toothless gear. The swing ring is slidably connected to the support platform, the toothless gear is rotatably connected to the support platform and meshes with the swing ring, and corresponding teeth are provided on the upper and lower sides of the swing ring; the fork rod is fixedly connected to the swing ring.

[0015] The nozzle support seat is provided with a guide groove, and any folding support rod is provided with a corresponding guide protrusion.

[0016] The lower end of the guide groove is a gradually opening structure.

[0017] The second bracket is fixedly connected to a limiting column.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This construction dust suppression device, through the collaborative design of a split platform, folding support rods, and nozzle support base, enables flexible dust suppression operations in various construction scenarios. When suppressing dust at height, the folding support rods can be fixed into a support column using a connecting assembly, and the second atomizing nozzle can be activated for operation. When suppressing dust near fences or foundation pits, the split platform is separated and the spacing between them is increased, allowing the folding support rods to unfold into an N-shape, and the first atomizing nozzle can be activated to operate, meeting the dust suppression needs of different locations.

[0020] In terms of maintenance, when the second atomizing nozzle is blocked due to poor water quality in the construction area, the traction rope can be loosened using the winding drum to move the nozzle support seat downward, lowering its height for easy maintenance. After the maintenance is completed, the winding drum can be rotated in the opposite direction to restore it. For the maintenance of the first atomizing nozzle, the split cart is separated to increase the spacing and lower its height for maintenance. The maintenance design is practical and reduces the tedious operations of maintenance preparation.

[0021] The drive mechanism utilizes a dual-shaft motor in conjunction with a lifting mechanism. By moving up and down, it connects to the winding drum and the swing mechanism, respectively. This allows for multiple uses, improves drive efficiency, reduces the number of power sources, and lowers equipment costs. Furthermore, a limiter assembly is linked to the lifting mechanism. When the winding drum is connected to the drive mechanism, the limit is released, while when the swing mechanism is connected, the rotation of the winding drum is restricted, ensuring stable and safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of one aspect of the present invention;

[0023] Figure 2 It is a structural diagram of the swing mechanism, driving mechanism, limiting assembly and lifting mechanism of the present invention;

[0024] Figure 3 yes Figure 1 A partial enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the present invention when dust is falling at a high altitude;

[0026] Figure 5 This is a schematic diagram of the structure of the present invention when performing dust reduction on a fence or foundation pit;

[0027] Figure 6 It is a structural schematic diagram of the connection assembly of the present invention;

[0028] Figure 7 It is a structural diagram of the limit assembly of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the swing mechanism of the present invention;

[0030] Figure 9 It is a structural schematic diagram of the nozzle support seat of the present invention;

[0031] Figure 10 It is a structural diagram of another aspect of the present invention;

[0032] Figure 11 yes Figure 10 A partial enlarged view of point B in the middle;

[0033] Among them: 1 is a split cart, 2 is a nozzle support seat, 3 is a support platform, 30 is a guide rod, 4 is a connecting assembly, 40 is a two-way screw, 41 is a slider, 42 is a fixed clamping ring, 5 is a folding support rod, 6 is a support column, 7 is a first atomizing nozzle, 8 is a swing mechanism, 80 is a swing ring, 81 is a toothless gear, 82 is a tooth, 9 is a fork lever, 10 is a shift lever, 11 is a second atomizing nozzle, 12 is a first bracket, 13 is a winding drum, 14 is a second bracket, 15 is a support wheel, 16 is Traction rope, 17 is a limit assembly, 170 is a limit pull rod, 171 is a reset spring, 172 is a slot, 173 is a top plate, 18 is a driving mechanism, 180 is a double-output shaft motor, 181 is an upper driving gear, 182 is a lower driving gear, 183 is a first driven gear, 184 is a second driven gear, 19 is a lifting mechanism, 190 is a lifting plate, 191 is a telescopic cylinder, 192 is a sliding column, 193 is a buffer spring, 20 is a guide groove, 21 is a guide protrusion, and 22 is a limit column. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] like Figures 1 to 5 As shown, a construction dust suppression device includes a split pallet truck 1, a nozzle support base 2, and a support platform 3. Two split pallet trucks 1 are provided. Each of the two split pallet trucks 1 is secured with a foldable support rod 5, which consists of two hinged vertical rods. Wheels are provided at the bottom of the two split pallet trucks 1, allowing for easy movement to locations where dust suppression is required. The split pallet trucks 1 can be secured to the ground using expansion bolts or other means.

[0036] One of the split carts 1 is provided with a connecting component 4, which fixes the two folding support rods 5 to form a complete supporting column 6 and limits the folding of the two folding support rods 5 and the displacement between the two split carts 1; a number of first atomizing nozzles 7 are provided on both folding support rods 5.

[0037] The nozzle support base 2 is rotatably connected to the support platform 3 and can move along the support column 6. The upper ends of the two folding support rods 5 are hinged to the support platform 3. The support platform 3 is provided with a swing mechanism 8, which is connected to a shift fork rod 9. A shift lever 10 is fixed to the nozzle support base 2 and cooperates with the shift fork rod 9. A second atomizing nozzle 11 is fixedly connected to the nozzle support base 2. When the shift lever 10 is connected to the shift fork rod 9, the swing mechanism 8 drives the nozzle support base 2 to swing back and forth through the shift fork rod 9 and the shift lever 10, thereby increasing the spray range of the second atomizing nozzle 11.

[0038] The first atomizing nozzle 7 and the second atomizing nozzle 11 are respectively connected to a valve and a water supply pipe; the water supply pipe is connected to a water source, and by controlling the valve, water can be sprayed from the first atomizing nozzle 7 or from the second atomizing nozzle 11.

[0039] When dust suppression is required at a height, the two folding support rods 5 are fixed together through the connecting assembly 4 to form a complete support column 6. Then, the valve of the second atomizing nozzle 11 is opened and the valve of the first atomizing nozzle 7 is closed. Water is sprayed through the second atomizing nozzle 11 to perform dust suppression operations at a height.

[0040] When dust reduction is required at a fence or foundation pit, the two folding support rods 5 are not secured via the connecting assembly 4. The two split carts 1 are then pulled apart, increasing the distance between them. During this process, the two folding support rods 5 unfold, eventually forming an N-shape. Finally, the valve of the first atomizing nozzle 7 is opened, and the valve of the second atomizing nozzle 11 is closed. Water is sprayed through the first atomizing nozzle 7 to reduce dust at the fence or foundation pit.

[0041] A first bracket 12 is fixedly connected to the support platform 3, and a winding drum 13 is rotatably connected to the first bracket 12; a second bracket 14 is rotatably connected to the support platform 3, and a support wheel 15 is rotatably connected to the second bracket 14; a traction rope 16 is wound around the winding drum 13, and one end of the traction rope 16 passes around the support wheel 15 and is fixedly connected to the nozzle support seat 2; a limiting component 17 is provided on the first bracket 12, and the rotation of the winding drum 13 is limited by the limiting component 17.

[0042] The poor quality of water used in construction areas (high in impurities) can easily clog the second atomizing nozzle 11. When the second atomizing nozzle 11 needs to be repaired, the winding drum 13 is rotated to loosen the traction rope 16, and the nozzle support base 2 moves downward under the action of gravity, thereby lowering its height and facilitating maintenance. Simultaneously, during this downward movement, the shift lever 10 separates from the shift fork lever 9 and moves down from the support platform 3 onto the support column 6.

[0043] After the maintenance, the traction rope 16 is wound by reversing the winding drum 13, the spray head support 2 is pulled to move along the support column 6 and finally moves to the support table 3, the push rod 10 is moved into the opening of the fork lever 9, and the cooperation between the two is realized. When the spray head support 2 moves to the support table 3, the rotation of the winding drum 13 is limited by the limiting assembly 17 to prevent the spray head support 2 from moving downward.

[0044] Since the second support 14 is rotationally connected with the support table 3, when the swing mechanism 8 drives the spray head support 2 to swing back and forth, the spray head support 2 will drive the second support to swing back and forth correspondingly through the traction rope 16. That is, through the above structure, the normal swing of the spray head support 2 will not be affected.

[0045] When the first atomizing nozzle 7 is maintained, the two split board carts 1 are separated and the distance between them is increased, so that the two folding support rods 5 are unfolded to form an n-shaped structure. Thus, the height of the first atomizing nozzle 7 is reduced, which is convenient for maintenance.

[0046] The driving mechanism 18 is connected with the lifting mechanism 19 on the support table 3, and the driving mechanism 18 is driven to move by the lifting mechanism 19. The driving mechanism 18 is connected with the swing mechanism 8 or the winding drum 13. When the lifting mechanism 19 drives the driving mechanism 18 to move upward, the driving mechanism 18 is connected with the winding drum 13, and the winding drum 13 can be driven to rotate. When the lifting mechanism 19 drives the driving mechanism 18 to move downward, the driving mechanism 18 is connected with the swing mechanism 8, and the swing mechanism 8 can be driven to move. That is, through the above structure, one driving mechanism 18 can provide power for the winding drum 13 and the swing mechanism 8.

[0047] Further, as shown in Figure 6 The connecting assembly 4 is arranged on any split board cart 1. The connecting assembly 4 includes a bidirectional screw rod 40 and two sliding blocks 41. The bidirectional screw rod 40 is rotationally connected with the split board cart 1. The two sliding blocks 41 are oppositely arranged and are both slidingly connected with the split board cart 1. The two sliding blocks 41 are both threadedly connected with the bidirectional screw rod 40. The two sliding blocks 41 can move towards or away from each other by rotating the bidirectional screw rod 40. The two fixed clamping rings 42 are fixedly connected with the two sliding blocks 41 and are oppositely arranged. By rotating the bidirectional screw rod 40, the two sliding blocks 41 are driven to move towards each other, and the two fixed clamping rings 42 clamp the two folding support rods 5 to form a complete support column 6 and can limit the movement between the two split board carts 1. Conversely, by reversing the bidirectional screw rod 40, the two sliding blocks 41 are driven to move away from each other, and the two fixed clamping rings 42 no longer clamp the folding support rods 5, so that the two split board carts 1 can move separately.

[0048] Further, as shown in Figure 3As shown, the drive mechanism 18 comprises a dual-shaft motor 180, an upper driving gear 181, and a lower driving gear 182. The upper driving gear 181 and the lower driving gear 182 are fixedly connected to the upper and lower ends of the output shaft of the dual-shaft motor 180, respectively. A first driven gear 183 is provided on the winding drum 13 for meshing with the upper driving gear 181. A second driven gear 184 is connected to the swing mechanism 8 for meshing with the lower driving gear 182. When the lifting mechanism 19 drives the dual-shaft motor 180 upward, the upper driving gear 181 meshes with the first driven gear 183, allowing the dual-shaft motor 180 to rotate. When the lifting mechanism 19 drives the dual-shaft motor 180 downward, the lower driving gear 182 meshes with the second driven gear 184, allowing the dual-shaft motor 180 to drive the swing mechanism 8. Specifically, the upper driving gear 181 and the first driven gear 183 can be bevel gears, while the lower driving gear 182 and the second driven gear 184 can be face gears.

[0049] Further, if Figure 2 As shown, the lifting mechanism 19 includes a lifting plate 190 and a telescopic cylinder 191. The lifting plate 190 is slidably connected to the guide rod 30 fixed to the support platform 3. The lifting plate 190 is fixedly connected to the housing of the dual-shaft motor 180. The ends of the telescopic cylinder 191 are respectively connected to the lifting plate 190 and the support platform 3. The extension and retraction of the telescopic cylinder 191 drives the lifting plate 190 and the dual-shaft motor 180 to move up and down.

[0050] The lifting plate 190 is provided with a sliding column 192 connected to the telescopic cylinder 191. The sliding column 192 is slidably connected to the lifting plate 190, and a buffer spring 193 is provided between the sliding column 192 and the lifting plate 190. Two buffer springs 193 are provided, with a buffer spring 193 provided between the upper and lower ends of the sliding column 192 and the lifting plate 190. Each buffer spring 193 is sleeved outside the sliding column 192, and its upper and lower ends respectively abut against the sliding column 192 and the lifting plate 190. By providing the buffer spring 193, it is possible to prevent collisions between the upper driving gear 181 and the first driven gear 183, and between the lower driving gear 182 and the second driven gear 184, when the telescopic cylinder 191 is extended and retracted to drive the dual-output shaft motor 180 to move up and down; that is, a movable buffer space is provided.

[0051] Further, if Figure 3 and Figure 7As shown, the limiting assembly 17 includes a limiting pull rod 170 and a reset spring 171; the limiting pull rod 170 is in sliding connection with the first support 12, and the two ends of the reset spring 171 are in hinged connection with the limiting pull rod 170 and the first support 12 respectively, and the reset spring 171 specifically adopts a tension spring. The winding drum 13 is provided with a plurality of clamping grooves 172 connected with the limiting pull rod 170, and the end of the limiting pull rod 170 can be clamped into the clamping groove 172, thereby limiting the rotation of the winding drum 13. The limiting pull rod 170 is fixedly connected with a top plate 173 cooperating with the lifting plate 190.

[0052] When the lifting mechanism 19 drives the double-output shaft motor 180 and the lifting plate 190 to move upwards, the lifting plate 190 pushes the top plate 173 and the limiting pull rod 170 to move upwards (the reset spring 171 generates elastic potential energy), so that the end of the limiting pull rod 170 moves out of the clamping groove 172, thereby not limiting the rotation of the winding drum 13. Conversely, when the lifting mechanism 19 drives the double-output shaft motor 180 and the lifting plate 190 to move downwards, the limiting pull rod 170 is pulled downwards under the action of the reset spring 171, so that the end of the limiting pull rod 170 can be clamped into the clamping groove 172, thereby limiting the rotation of the winding drum 13.

[0053] That is, through the structural arrangement of the top plate 173, linkage between the lifting mechanism 19 and the limiting assembly 17 can be achieved; that is, after the winding drum 13 is connected with the driving mechanism 18, the limiting assembly 17 releases the limitation on the winding drum 13; after the swinging mechanism 8 is connected with the driving mechanism 18, the limiting assembly 17 limits the winding drum 13.

[0054] Further, as shown in the figure, Figure 8 The swinging mechanism 8 specifically adopts the common missing tooth gear transmission mechanism in the prior art, which includes a swinging ring 80 and a missing tooth gear 81; the swinging ring 80 is in sliding connection with the support table 3, the missing tooth gear 81 is in rotational connection with the support table 3 and is in meshing connection with the swinging ring 80, and the swinging ring 80 is provided with corresponding teeth 82 on the upper and lower sides; the yoke rod 9 is fixedly connected with the swinging ring 80. The second driven gear 184 is fixedly connected coaxially with the missing tooth gear 81; the second driven gear 184 and the missing tooth gear 81 are rotated by the double-output shaft motor 180, and the missing tooth gear 81 is alternately meshed with the teeth 82 on the upper and lower sides of the swinging ring 80, thereby realizing the reciprocating movement of the swinging ring 80 and the yoke rod 9, and further driving the nozzle support seat 2 to swing reciprocatingly.

[0055] Further, as shown in the figure, Figures 9 to 11 The nozzle support seat 2 is provided with a guide groove 20, and any folding support rod 5 is provided with a corresponding guide protrusion 21; the guide groove 20 and the guide protrusion 21 are in sliding connection, and the nozzle support seat 2 can move along the guide protrusion 21 to prevent angular deviation during upward and downward movement.

[0056] The lower end of the guide groove 20 is in the form of an involute; during the process of moving the nozzle support seat 2 from the support table 3 to the support column 6, the involute structure of the lower end is first contacted with the guide protrusion 21 for guidance, thereby ensuring that the guide groove 20 can be matched with the guide protrusion 21.

[0057] Further, as shown in Figure 3 and Figure 11 , the second support 14 is fixedly connected with a limiting column 22; the upper end of the support wheel 15 is blocked by the limiting column 22, thereby avoiding the traction rope 16 from being pulled out from the upper end of the support wheel 15.

[0058] The above only describes the preferred embodiments of the present application in detail, but the present application is not limited to the above embodiments.

Claims

1. A dust suppression device for construction, characterized by: The invention comprises a split pallet (1), a nozzle support seat (2) and a support platform (3); the split pallet (1) is provided with two, and a folding support rod (5) is fixed on each of the two split pallets (1), and the folding support rod (5) is composed of two hinged vertical rods; one of the split pallet (1) is provided with a connecting assembly (4); a plurality of first atomizing nozzles (7) are provided on each of the two folding support rods (5); the nozzle support seat (2) is rotatably connected to the support platform (3) and can move along the support column (6); the upper ends of the two folding support rods (5) are hinged to the support platform (3); a swing mechanism (8) is provided on the support platform (3), and the swing mechanism (8) is connected to a fork rod (9); a shift rod (10) that cooperates with the fork rod (9) is fixed on the nozzle support seat (2); a second atomizing nozzle (11) is fixedly connected to the nozzle support seat (2); When the connecting assembly (4) fixes the two folding support rods (5), a complete supporting column (6) is formed; when the connecting assembly (4) does not fix the two folding support rods (5), the two split carts (1) are pulled apart, so that the two folding support rods (5) are unfolded and form an N shape; The support platform (3) is fixedly connected to a first bracket (12), and a winding drum (13) is rotatably connected to the first bracket (12); the support platform (3) is rotatably connected to a second bracket (14), and the second bracket (14) is rotatably connected to a support wheel (15); a traction rope (16) is wound around the winding drum (13), and one end of the traction rope (16) is passed around the support wheel (15) and fixedly connected to the nozzle support seat (2); a limiting component (17) is provided on the first bracket (12), and the rotation of the winding sleeve is limited by the limiting component (17); the support platform (3) is connected to a driving mechanism (18) through a lifting mechanism (19), and the lifting mechanism (19) drives the driving mechanism (18) to move, so that the driving mechanism (18) is connected to the swing mechanism (8) or the winding drum (13) by power, and can drive the nozzle support seat (2) to swing back and forth or move up and down along the support column (6).

2. A construction dust suppression device according to claim 1, characterized in that: The connecting assembly (4) includes a bidirectional screw (40) and a slider (41), wherein the bidirectional screw (40) is rotatably connected to the split trolley (1); two sliders (41) are provided, and the two sliders (41) are arranged opposite to each other and are both slidably connected to the split trolley (1), and the two sliders (41) are both threadedly connected to the bidirectional screw (40); and the two sliders (41) are fixedly connected to a fixed snap ring (42), and the two fixed snap rings (42) are arranged opposite to each other.

3. A construction dust suppression device according to claim 1, characterized in that: The driving mechanism (18) comprises a double-output shaft motor (180), an upper driving gear (181) and a lower driving gear (182), wherein the upper driving gear (181) and the lower driving gear (182) are fixedly connected to the upper and lower ends of the output shaft of the double-output shaft motor (180), respectively; the winding drum (13) is provided with a first driven gear (183) for meshing with the upper driving gear (181); and the swing mechanism (8) is connected to a second driven gear (184) for meshing with the lower driving gear (182).

4. A construction dust suppression device according to claim 3, characterized in that: The lifting mechanism (19) comprises a lifting plate (190) and a telescopic cylinder (191); the lifting plate (190) is slidably connected to a guide rod (30) on a support platform (3); the lifting plate (190) is fixedly connected to a housing of a double-output shaft motor (180); and both ends of the telescopic cylinder (191) are respectively connected to the lifting plate (190) and the support platform (3).

5. A construction dust suppression device according to claim 4, characterized in that: The lifting plate (190) is provided with a sliding column (192) connected to the telescopic cylinder (191), the sliding column (192) is slidably connected to the lifting plate (190), and a buffer spring (193) is provided between the sliding column (192) and the lifting plate (190).

6. A construction dust suppression device according to claim 4, characterized in that: The limiting assembly (17) includes a limiting rod (170) and a return spring (171); the limiting rod (170) is slidably connected to the first bracket (12), and the two ends of the return spring (171) are hinged to the limiting rod (170) and the first bracket (12) respectively; the winding drum (13) is provided with a plurality of slots (172) connected to the limiting rod (170); the limiting rod (170) is fixedly connected to a top plate (173) that cooperates with the lifting plate (190).

7. The construction dust suppression device according to claim 3, characterized in that: The swing mechanism (8) comprises a swing ring (80) and a toothless gear (81), wherein the swing ring (80) is slidably connected to the support platform (3), the toothless gear (81) is rotationally connected to the support platform (3) and meshes with the swing ring (80), and corresponding teeth (82) are provided on both upper and lower sides of the swing ring (80); and the shift fork rod (9) is fixedly connected to the swing ring (80).

8. The construction dust suppression device according to claim 1, characterized in that: A guide groove (20) is provided on the nozzle support seat (2), and a corresponding guide protrusion (21) is provided on any folding support rod (5).

9. The construction dust suppression device according to claim 8, characterized in that: The lower end of the guide groove (20) is a gradually opening structure.

10. The construction dust suppression device according to claim 1, characterized in that: A limiting column (22) is fixedly connected to the second bracket (14).

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