Construction site dust suppression device for urban rail engineering construction

Abstract

The invention discloses a construction site dust suppression device for urban rail engineering construction, and belongs to the field of urban rail engineering construction.The construction site dust suppression device for urban rail engineering construction comprises a base, the left side of the base is fixedly connected with a water storage tank, and a water pump is fixedly installed at the top of the water storage tank; a water conveying pipe is fixedly installed at the end, away from the water storage tank, of the water pump, a spray head is fixedly installed at the end, away from the water pump, of the water conveying pipe, a swing assembly is arranged on the outer side of the spray head and comprises a motor, and the output end of the motor is fixedly connected with a first gear; and a first rotating plate is fixedly connected to the center of the top of the first gear. By arranging the swing assembly, the swing assembly can drive the spray head to swing left and right back and forth, the spray head can spray water mist at different angles at the same height, and the dust suppression effect of the spray head is improved.

Description

Technical Field

[0001] This application relates to the field of urban rail engineering construction. Specifically, it relates to a dust suppression device for construction sites in urban rail engineering construction. Background Art

[0002] A dust suppression device for construction sites in urban rail engineering construction is a device that can effectively control construction dust. It mainly reduces the dust concentration by adsorbing, purifying, and blocking dust, so as to reduce the pollution to the surrounding environment. This device is often used in large construction sites, especially those urban rail engineering, tunnel excavation, road construction and other construction sites where a large amount of dust often appears.

[0003] The patent document with the publication number CN118437100A discloses a dust suppression device for traffic engineering construction sites. The above application document includes an assembled dust suppression retaining wall, an external spray component, an internal spray component, and a water supply component; the assembled dust suppression retaining wall is arranged around the traffic engineering construction site to prevent the dust inside the traffic engineering construction site from spreading outward; the external spray component is arranged on the top of the assembled dust suppression retaining wall to spray and suppress dust outside the traffic engineering construction site; the internal spray component is arranged inside the assembled dust suppression retaining wall to spray and suppress dust inside the traffic engineering construction site; the water supply component is respectively connected to the external spray component and the internal spray component to convey the spray water source.

[0004] Although this application has a simple and reasonable structure and relatively convenient installation and operation, the adjustment angle of the nozzle is limited in actual use, and it is impossible to perform dust suppression operations on the construction site more comprehensively. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a dust suppression device for a construction site in urban rail engineering, which solves the problems raised in the above-mentioned background art. To achieve the above objectives, the present invention is realized through the following technical solutions: A dust suppression device for a construction site in urban rail engineering includes a base. A water storage tank is fixedly connected to the left side of the base. A water pump is fixedly installed on the top of the water storage tank. One end of the water pump away from the water storage tank is fixedly installed with a water delivery pipe. One end of the water delivery pipe away from the water pump is fixedly installed with a nozzle. A swing assembly is arranged outside the nozzle. The swing assembly includes a motor. The output end of the motor is fixedly connected with a first gear. The center of the top of the first gear is fixedly connected with a first rotating plate. The outer top of the first rotating plate is fixedly connected with a first sliding column. The outside of the first sliding column is slidably connected with a swing frame. The bottom of the rear end of the swing frame is hinged with a first support column. The inner wall of the rear end of the swing frame is slidably connected with the top of a second sliding column which is fixedly connected with a second rotating plate. The top right side of the second rotating plate is fixedly connected with a connecting column. The outer wall of the connecting column is hinged with a support frame. The top of the connecting column is fixedly connected with a fixing rod. First sliding grooves are opened at the left and right ends of the fixing rod. The outer wall of the first sliding groove is slidably connected with a limiting ring. The nozzle is fixedly installed at the front end of the limiting ring.

[0006] Preferably, the bottom of the support frame is fixedly connected to the top of the base, the bottom of the motor is fixedly connected to the top of the base, and the bottom of the first support column is fixedly connected to the top of the base.

[0007] Preferably, an adjustment assembly is arranged above the base. The adjustment assembly includes a second support column. The top of the second support column is hinged with a second gear. The right side of the second gear is engaged with a third gear. The bottom of the third gear is hinged with a third support column. The top of the third gear is fixedly connected with a reciprocating lead screw. The outer wall of the reciprocating lead screw is threadedly connected with a threaded block. The right side of the threaded block is fixedly connected with a sliding frame. The right side of the sliding frame is slidably connected with a limiting frame. The rear end of the threaded block is fixedly connected with a mounting frame. One end of the mounting frame away from the threaded block is fixedly connected with a circular plate. The outer bottom of the circular plate is fixedly connected with a connecting frame. Second sliding grooves are opened above the outer side of the limiting ring.

[0008] Preferably, the bottom of the connecting frame is slidably connected in the second sliding groove. The bottom of the limiting frame is fixedly connected to the top of the base. The bottom of the second support column is fixedly connected to the top of the base.

[0009] Preferably, the bottom of the third support column is fixedly connected to the top of the base. The left side of the second gear is engaged with the right side of the first gear.

[0010] Preferably, a protection component is provided above the base. The protection component includes a protective frame. A first hydraulic cylinder is fixedly installed on the upper right side of the limit frame. A second hydraulic cylinder is arranged below the first hydraulic cylinder. A limiter is arranged on the lower outer wall of the reciprocating lead screw. The right side of the limiter is fixedly connected to the outer wall on the right side of the limit frame by bolts. A first hydraulic rod is slidably connected to the lower inner surface of the first hydraulic cylinder. A second hydraulic rod is slidably connected to the upper inner surface of the first hydraulic cylinder. One end of the second hydraulic rod away from the first hydraulic cylinder is fixedly connected to the outer sides of the left and right ends of the protective frame. A fourth hydraulic rod is slidably connected to the lower inner surface of the second hydraulic cylinder. A third hydraulic rod is slidably connected to the upper inner surface of the second hydraulic cylinder. One end of the fourth hydraulic rod away from the second hydraulic cylinder is fixedly connected to the inner sides of the left and right ends of the protective frame. A clamping groove is formed inside the base. The lower outer wall of the first hydraulic cylinder is clamped inside the clamping groove.

[0011] Preferably, the bottom of the protective frame is hinged to the top of the base. The right side of the second hydraulic cylinder is fixedly connected to the lower left side of the limit frame.

[0012] Preferably, the second hydraulic cylinder is arranged above the third gear. The limiter is arranged above the second hydraulic cylinder.

[0013] (1) In this application, by setting the swing component, it is realized that the swing component can drive the nozzle to swing left and right back and forth, so that the nozzle can spray water mist at different angles at the same height, improving the dust suppression effect of the nozzle.

[0014] (2) In this application, by setting the adjustment component, while the swing component drives the nozzle to swing left and right, it can drive the nozzle to slide up and down, so that the nozzle can spray the dust in the air at different heights.

[0015] (3) In this application, by setting the protection component, when the swing component and the adjustment component drive the nozzle to move up and down, left and right, some parts on the base can be wrapped, effectively preventing the water sprayed by the nozzle from dropping onto the parts on the base in a large area and affecting the service life of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the cross-section of the present invention Figure 1 ; Figure 3 is a sectional view of the present invention Figure 2 ; Figure 4 is a sectional view of the present invention Figure 3 ; Figure 5 is a sectional view of the present invention Figure 4 ; Figure 6 is the present invention Figure 1 enlarged view of part A; Figure 7 is the present invention Figure 3 enlarged view of part B; Figure 8 is the present invention Figure 4 enlarged view of part C; Figure 9 is the present invention Figure 4 enlarged view of part D; Figure 10 is the present invention Figure 5 enlarged view of part E; Figure 11 is the present invention Figure 4 enlarged view of part F.

[0017] In the above figures, 1, base; 2, water storage tank; 3, water pump; 4, water delivery pipe; 5, nozzle; 6, swing assembly; 61, motor; 62, first gear; 63, first rotating plate; 64, first sliding column; 65, swing frame; 66, first support column; 67, second sliding column; 68, second rotating plate; 69, connecting column; 610, support frame; 611, fixed rod; 612, first chute; 613, limiting ring; 7, adjustment assembly; 71, second support column; 72, second gear; 73, third gear; 74, third support column; 75, reciprocating lead screw; 76, threaded block; 77, sliding frame; 78, limiting frame; 79, mounting frame; 710, circular plate; 711, connecting frame; 712, second chute; 8, protection assembly; 81, first hydraulic cylinder; 82, second hydraulic cylinder; 83, limiter; 84, protection frame; 85, first hydraulic rod; 86, second hydraulic rod; 87, third hydraulic rod; 88, fourth hydraulic rod; 89, card slot. Detailed implementation manners

[0018] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0019] It should be noted that, without conflict, the embodiments and the features in the embodiments in the present application may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0020] Embodiment 1

[0021] Referring to Figures 1 - 8 , this embodiment provides a dust suppression device for a construction site in urban rail engineering construction, including a base 1. A water storage tank 2 is fixedly connected to the left side of the base 1. A water pump 3 is fixedly installed on the top of the water storage tank 2. One end of the water pump 3 away from the water storage tank 2 is fixedly installed with a water delivery pipe 4. One end of the water delivery pipe 4 away from the water pump 3 is fixedly installed with a spray head 5. The upper part of the water delivery pipe 4 is wavy, which can effectively prevent the length of the water delivery pipe 4 from being insufficient when the spray head 5 swings. A swing assembly 6 is arranged outside the spray head 5. The swing assembly 6 includes a motor 61. The output end of the motor 61 is fixedly connected with a first gear 62. The motor 61 provides power for the use of the first gear 62. The center of the top of the first gear 62 is fixedly connected with a first rotating plate 63. The outer top of the first rotating plate 63 is fixedly connected with a first sliding column 64. The height of the first sliding column 64 is greater than the height of the swing frame 65, which can effectively prevent the first sliding column 64 from sliding out of the swing frame 65 when sliding in the swing frame 65. The outer side of the first sliding column 64 is slidably connected with a swing frame 65. The bottom of the rear end of the swing frame 65 is hinged with a first support column 66. The first support column 66 provides a supporting force for the use of the swing frame 65. The top of the second sliding column 67 slidably connected to the inner wall of the rear end of the swing frame 65 is fixedly connected with a second rotating plate 68. The swing frame 65 is arc-shaped and hollow, which can better realize the sliding of the first sliding column 64 and the second sliding column 67 inside. The right top of the second rotating plate 68 is fixedly connected with a connecting column 69. The outer wall of the connecting column 69 is hinged with a support frame 610. The support frame 610 is in an "L" shape, which can realize that the support frame 610 better provides a supporting force for the use of the connecting column 69. The top of the connecting column 69 is fixedly connected with a fixing rod 611. The left and right ends of the fixing rod 611 are provided with first sliding grooves 612. The number of the first sliding grooves 612 is two, and the first sliding grooves 612 are cuboid. The outer wall of the first sliding groove 612 is slidably connected with a limiting ring 613. The spray head 5 is fixedly installed at the front end of the limiting ring 613. The periphery of the limiting ring 613 is circular, and two sliders are arranged at the left and right inner ends, which can realize that the limiting ring 613 slides more stably inside the first sliding groove 612, and at the same time can realize that the rotation of the limiting ring 613 is more stable. The bottom of the support frame 610 is fixedly connected with the top of the base 1. The bottom of the motor 61 is fixedly connected with the top of the base 1. The bottom of the first support column 66 is fixedly connected with the top of the base 1.

[0022] When the above device is in specific use, the water pump 3 can transfer the water in the water storage tank 2 to the spray head 5 through the water delivery pipe 4, so as to realize the spraying of the spray head 5 to the outside. The movement of the motor 61 drives the first gear 62 to rotate. The rotation of the first gear 62 drives the first rotating plate 63 to rotate. The rotation of the first rotating plate 63 drives the first sliding column 64 to rotate in the swing frame 65, so that the swing frame 65 swings left and right on the first support column 66. The left and right swing of the swing frame 65 on the first support column 66 drives the second sliding column 67 to slide back and forth in the swing frame 65, so that the second rotating plate 68 above the second sliding column 67 rotates back and forth. The back and forth rotation of the second rotating plate 68 drives the connecting column 69 to rotate back and forth on the support frame 610. The back and forth rotation of the connecting column 69 drives the fixed rod 611 at the top to rotate back and forth. The back and forth rotation of the fixed rod 611 drives the limit rings 613 outside the first chutes 612 at both ends to rotate left and right back and forth. The back and forth rotation of the limit rings 613 drives the spray head 5 at the front end to rotate left and right back and forth.

[0023] Embodiment 2

[0024] See Figures 1 - 7, on the basis of the first embodiment, an adjusting assembly 7 is provided above the base 1. The adjusting assembly 7 includes a second support column 71. The top of the second support column 71 is hinged with a second gear 72, and the second support column 71 provides a supporting force for the use of the second gear 72. The right side of the second gear 72 is meshed with a third gear 73. The bottom of the third gear 73 is hinged with a third support column 74, and the third support column 74 provides a supporting force for the use of the third gear 73. The top of the third gear 73 is fixedly connected with a reciprocating lead screw 75, and the third gear 73 provides a supporting force and power for the use of the reciprocating lead screw 75. The outer wall of the reciprocating lead screw 75 is threadedly connected with a threaded block 76. The right side of the threaded block 76 is fixedly connected with a sliding frame 77. The sliding frame 77 is in a "concave" shape. The right side of the sliding frame 77 is slidably connected with a limiting frame 78. The limiting frame 78 is in a "convex" shape. The rear end of the threaded block 76 is fixedly connected with a mounting frame 79. One end of the mounting frame 79 away from the threaded block 76 is fixedly connected with a circular plate 710. The mounting frame 79 provides a supporting force for the use of the circular plate 710, making the use of the circular plate 710 more stable. The outer bottom of the circular plate 710 is fixedly connected with a connecting frame 711. The bottom of the second chute 712 is in an "L" shape. The connecting frame 711 is in an "L" shape, and the bottom "L" shape of the connecting frame 711 is slidably connected in the second chute 712. A second chute 712 is provided above the outer side of the limiting ring 613. The upper part of the second chute 712 is circular. When the limiting ring 613 rotates along with the fixed rod 611 above the connecting column 69, the second chute 712 on the limiting ring 613 can stably slide around the bottom of the connecting frame 711, preventing the occurrence of movement interference. The bottom of the connecting frame 711 is slidably connected in the second chute 712. The bottom of the limiting frame 78 is fixedly connected with the top of the base 1. The bottom of the second support column 71 is fixedly connected with the top of the base 1. The base 1 provides a supporting force for the use of the second support column 71. The bottom of the third support column 74 is fixedly connected with the top of the base 1. The left side of the second gear 72 is meshed with the right side of the first gear 62. The base 1 provides a supporting force for the use of the third support column 74.

[0025] When the above-mentioned device is in specific use, the rotation of the first gear 62 drives the second gear 72 to rotate on the second support column 71. The rotation of the second gear 72 drives the third gear 73 to rotate on the third support column 74. The rotation of the third gear 73 drives the reciprocating lead screw 75 to rotate. The movement of the reciprocating lead screw 75 drives the sliding frame 77 on the right side of the threaded block 76 to move up and down on the limiting frame 78. The up and down movement of the threaded block 76 drives the mounting frame 79 to move up and down. The up and down movement of the mounting frame 79 drives the circular plate 710 to move up and down. The up and down movement of the circular plate 710 drives the connecting frame 711 at the bottom to move up and down. The up and down movement of the connecting frame 711 drives the lower limiting ring 613 to move up and down. When the limiting ring 613 rotates back and forth under the action of the connecting column 69, the bottom of the connecting frame 711 can slide back and forth in the second chute 712.

[0026] Embodiment III

[0027] See Figures 1 - 11, on the basis of the second embodiment, a protection assembly 8 is provided above the base 1. The protection assembly 8 includes a protection frame 84. The protection frame 84 is foldable, and the outer sides of the front and rear ends of the protection frame 84 are hinged to the top of the base 1. The number of the protection frames 84 is two, so that the protection frame 84 can protect the device on the base 1 more closely. A first hydraulic cylinder 81 is fixedly installed on the upper right side of the limit frame 78. A second hydraulic cylinder 82 is arranged below the first hydraulic cylinder 81. A stopper 83 is arranged on the outer wall of the lower part of the reciprocating lead screw 75. The stopper 83 can prevent the threaded block 76 from hitting the second hydraulic cylinder 82 when the second hydraulic cylinder 82 is not in use, which affects the use of the protection frame 84. The right side of the stopper 83 is fixed to the outer wall of the right side of the limit frame 78 by bolts. A first hydraulic rod 85 is slidably connected to the inner surface of the lower part of the first hydraulic cylinder 81. A second hydraulic rod 86 is slidably connected to the inner surface of the upper part of the first hydraulic cylinder 81. A liquid is arranged inside the first hydraulic cylinder 81. Pistons are arranged on both the first hydraulic rod 85 and the second hydraulic rod 86. The pistons on the first hydraulic rod 85 and the second hydraulic rod 86 are slidably connected to the inner surface of the first hydraulic cylinder 81. One end of the second hydraulic rod 86 far from the first hydraulic cylinder 81 is fixedly connected to the outer sides of the left and right ends of the protection frame 84. A fourth hydraulic rod 88 is slidably connected to the inner surface of the lower part of the second hydraulic cylinder 82. A third hydraulic rod 87 is slidably connected to the inner surface of the upper part of the second hydraulic cylinder 82. A liquid is arranged inside the second hydraulic cylinder 82. Pistons are arranged on both the third hydraulic rod 87 and the fourth hydraulic rod 88. The pistons on the third hydraulic rod 87 and the fourth hydraulic rod 88 are slidably connected to the inner surface of the second hydraulic cylinder 82. One end of the fourth hydraulic rod 88 far from the second hydraulic cylinder 82 is fixedly connected to the inner sides of the left and right ends of the protection frame 84. A card slot 89 is formed inside the base 1. The outer wall of the lower part of the first hydraulic cylinder 81 is clamped inside the card slot 89. The bottom of the protection frame 84 is hinged to the top of the base 1. The right side of the second hydraulic cylinder 82 is fixedly connected to the lower left side of the limit frame 78. The second hydraulic cylinder 82 is arranged above the third gear 73. The stopper 83 is arranged above the second hydraulic cylinder 82. A square groove larger than the width of the fixing rod 611 is formed in the middle of the rear protection frame 84. A circular groove slightly larger than the water delivery pipe 4 is formed in the inner side of the left end of the protection frame 84. A square groove slightly larger than the limit frame 78, the sliding frame 77 and the threaded block 76 is formed in the rear protection frame 84 on the right side. It can effectively prevent the parts on the base 1 from interfering with the use of the protection frame 84 when the protection frame 84 is opened or closed on the base 1, making the use of the protection frame 84 more convenient.

[0028] When the above-mentioned device is in specific use, when the reciprocating lead screw 75 drives the threaded block 76 to move up and down, when the threaded block 76 moves upward and hits the first hydraulic rod 85 below the first hydraulic cylinder 81, the first hydraulic rod 85 moves upward, the first hydraulic rod 85 squeezes the inside of the first hydraulic cylinder 81, the second hydraulic rod 86 moves outward, so that the second hydraulic rod 86 can drive the protective frame 84 to gather from both ends of the base 1 to the middle, realizing the protection of the structure on the base 1. When the threaded block 76 hits the first hydraulic cylinder 81, it will move downward. At this time, a stopper 83 is installed below the reciprocating lead screw 75. When the threaded block 76 hits the stopper 83, it will continue to move upward. When it is necessary to open the protective frame 84, by turning the bolt on the right side of the stopper 83, the stopper 83 is loosened from the reciprocating lead screw 75, so that the stopper 83 falls on the third gear 73. At this time, when the threaded block 76 moves downward under the action of the reciprocating lead screw 75, when the threaded block 76 hits the third hydraulic rod 87, the third hydraulic rod 87 moves downward, the third hydraulic rod 87 squeezes the inside of the second hydraulic cylinder 82, the fourth hydraulic rod 88 is pushed outward, and the protective frame 84 can be started to open outward.

[0029] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A dust suppression device for a construction site in urban rail engineering construction, including a base (1), characterized in that, On the left side of the base (1), a water storage tank (2) is fixedly connected. On the top of the water storage tank (2), a water pump (3) is fixedly installed. One end of the water pump (3) away from the water storage tank (2) is fixedly installed with a water delivery pipe (4). One end of the water delivery pipe (4) away from the water pump (3) is fixedly installed with a spray head (5). A swing assembly (6) is arranged outside the spray head (5). The swing assembly (6) includes a motor (61). The output end of the motor (61) is fixedly connected with a first gear (62). In the center of the top of the first gear (62), a first rotating plate (63) is fixedly connected. On the outer top of the first rotating plate (63), a first sliding column (64) is fixedly connected. The outer side of the first sliding column (64) is slidably connected with a swing frame (65). The bottom of the rear end of the swing frame (65) is hinged with a first support column (66). The inner wall of the rear end of the swing frame (65) is slidably connected with the top of a second sliding column (67) which is fixedly connected with a second rotating plate (68). On the top of the right side of the second rotating plate (68), a connecting column (69) is fixedly connected. The outer wall of the connecting column (69) is hinged with a support frame (610). On the top of the connecting column (69), a fixed rod (611) is fixedly connected. First sliding grooves (612) are formed at the left and right ends of the fixed rod (611). The outer walls of the first sliding grooves (612) are slidably connected with limit rings (613). The spray head (5) is fixedly installed at the front end of the limit ring (613).

2. The construction site dust suppression device for urban rail engineering construction according to claim 1, characterized in that, The bottom of the support frame (610) is fixedly connected with the top of the base (1). The bottom of the motor (61) is fixedly connected with the top of the base (1). The bottom of the first support column (66) is fixedly connected with the top of the base (1).

3. A dust suppression device for a construction site in urban rail engineering construction according to claim 1, characterized in that, Above the base (1), an adjustment assembly (7) is arranged. The adjustment assembly (7) includes a second support column (71). The top of the second support column (71) is hinged with a second gear (72). The right side of the second gear (72) is engaged with a third gear (73). The bottom of the third gear (73) is hinged with a third support column (74). The top of the third gear (73) is fixedly connected with a reciprocating lead screw (75). The outer wall of the reciprocating lead screw (75) is threadedly connected with a threaded block (76). The right side of the threaded block (76) is fixedly connected with a sliding frame (77). The right side of the sliding frame (77) is slidably connected with a limit frame (78). The rear end of the threaded block (76) is fixedly connected with a mounting frame (79). One end of the mounting frame (79) away from the threaded block (76) is fixedly connected with a circular plate (710). The outer bottom of the circular plate (710) is fixedly connected with a connecting frame (711). Second sliding grooves (712) are formed above the outer side of the limit ring (613).

4. The construction site dust suppression device for urban rail engineering construction according to claim 3, characterized in that, The bottom of the connecting frame (711) is slidably connected in the second sliding grooves (712). The bottom of the limit frame (78) is fixedly connected with the top of the base (1). The bottom of the second support column (71) is fixedly connected with the top of the base (1).

5. A dust suppression device for a construction site in urban rail engineering according to claim 3, characterized in that, The bottom of the third support column (74) is fixedly connected to the top of the base (1), and the left side of the second gear (72) meshes with the right side of the first gear (62).

6. The dust suppression device for a construction site used in urban rail engineering construction according to claim 1, characterized in that, A protection assembly (8) is arranged above the base (1). The protection assembly (8) includes a protection frame (84). A first hydraulic cylinder (81) is fixedly installed on the upper right side of the limiting frame (78). A second hydraulic cylinder (82) is arranged below the first hydraulic cylinder (81). A limiter (83) is arranged on the outer wall of the lower part of the reciprocating lead screw (75). The right side of the limiter (83) is fixedly connected to the outer wall of the right side of the limiting frame (78) by bolts. A first hydraulic rod (85) is slidably connected to the inner surface of the lower part of the first hydraulic cylinder (81). A second hydraulic rod (86) is slidably connected to the inner surface of the upper part of the first hydraulic cylinder (81). One end of the second hydraulic rod (86) away from the first hydraulic cylinder (81) is fixedly connected to the outer sides of the left and right ends of the protection frame (84). A fourth hydraulic rod (88) is slidably connected to the inner surface of the lower part of the second hydraulic cylinder (82). A third hydraulic rod (87) is slidably connected to the inner surface of the upper part of the second hydraulic cylinder (82). One end of the fourth hydraulic rod (88) away from the second hydraulic cylinder (82) is fixedly connected to the inner sides of the left and right ends of the protection frame (84). A clamping groove (89) is formed in the inner side of the base (1). The outer wall of the lower part of the first hydraulic cylinder (81) is clamped in the inner side of the clamping groove (89).

7. The construction site dust suppression device for urban rail engineering construction according to claim 6, characterized in that, The bottom of the protection frame (84) is hinged to the top of the base (1), and the right side of the second hydraulic cylinder (82) is fixedly connected to the lower left side of the limiting frame (78).

8. The construction site dust suppression device for urban rail engineering construction according to claim 7, characterized in that, The second hydraulic cylinder (82) is arranged above the third gear (73), and the limiter (83) is arranged above the second hydraulic cylinder (82).

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