A spray dust suppression device for bridge construction and use method thereof

Abstract

The present invention provides a spray dust reduction device for bridge construction and a method for using the same, wherein the spray dust reduction device comprises a movable frame, a dust removal platform, a dust removal box, a spray mechanism and a dust suction mechanism; the dust removal platform is arranged in the movable frame, and a cavity capable of accommodating a haircutting machine is arranged inside the lower end of the dust removal platform; dust particles are stacked in the dust removal box, and the dust removal box can be elastically supported on the dust removal platform above the cavity by sliding up and down, so that the haircutting machine can contact the lower end of the dust removal box and transmit vibration; the spray mechanism can be arranged in the movable frame so as to spray into the interior of the dust removal box; the dust suction mechanism is connected between the cavity and the dust removal box, so as to pass the dust generated by the haircutting machine into the dust particles stacked in the dust removal box; in the spray dust reduction device and the method for using the same of the present invention, the vibration of the haircutting machine itself can make the dust particles vibrate, which is beneficial for the dust particles to be spray-infiltrated and cleaned, and the generated dust-containing waste water is discharged, which can effectively reduce the overflow of dust during the haircutting process.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a spray dust suppression device for bridge construction and a use method thereof. Background Art

[0002] During the bridge deck paving process, the entire beam surface needs to be roughened in advance, and the use of a roughening machine during the roughening process will generate a large amount of dust, affecting the construction environment. At present, in most bridge deck roughening construction processes, operators reduce the inhalation of dust by wearing masks / respiratory masks, but there is a lack of effective treatment for the dust generated in the environment. Therefore, during the roughening process, the normal work of workers in other processes is easily affected by environmental dust.

[0003] Based on the above reasons, it is necessary to provide a spray dust suppression device for bridge construction and a method of using the same. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the background technology and provide a spray dust suppression device for bridge construction and a method of using the same, which is particularly suitable for construction operations that are prone to generate dust, such as roughening of bridge decks.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] In one aspect, the present invention provides a spray dust suppression device for bridge construction, comprising:

[0007] Mobile frame;

[0008] A dust removal platform is arranged in the movable frame, and a cavity capable of accommodating the hair cutting machine is arranged inside the lower end of the dust removal platform;

[0009] A dust removal box, in which dust removal particles are stacked, the dust removal box can be elastically supported on the dust removal table above the cavity by sliding up and down, so that the chiseling machine can contact the lower end of the dust removal box and transmit vibration;

[0010] a spray mechanism capable of spraying into the interior of the dust removal box, and the spray mechanism is disposed in the moving frame; and

[0011] A dust collecting mechanism is connected between the cavity and the dust removal box to pass the dust generated by the haircutting machine into the dust removal particles stacked in the dust removal box.

[0012] Furthermore, the dust removal table can be horizontally slidably arranged in the mobile frame;

[0013] The outer side wall of the movable frame is wrapped with a cloth film for dust isolation;

[0014] The dust removal box is also connected to an actuator component, which is connected to the brake mechanism of the roller in the mobile frame. The dust removal box is pried up and down by a haircutting machine, so that the actuator component unlocks the brake mechanism after moving up and stops the brake mechanism after moving down.

[0015] Furthermore, the spray mechanism includes a water source and a spray gun connected between the water source and the dust removal box; the water storage chamber of the spray gun is provided with a group of piston assemblies for suction and discharge of water, wherein the water storage chamber is connected to the water source through a one-way water inlet pipe, and is connected to the dust removal box through a one-way water outlet pipe;

[0016] The spray gun is arranged on the moving frame, and the piston assembly is connected with the dust removal platform, so that the dust removal platform slides back and forth in the moving frame to drive the spray gun to absorb water and spray periodically.

[0017] Further, the brake mechanism includes a brake block and a clip;

[0018] The actuator assembly can be slidably mounted on the moving frame;

[0019] The brake block is fixed on the wheel axle of the roller, and the cross-sectional profile of the brake block is a regular polygon on any cross section perpendicular to the axis of the wheel axle;

[0020] The clip is arranged on the actuator, and has a slot at the lower end that matches the cross-sectional profile of the brake block, so that the brake block can be inserted into the slot after the clip slides down.

[0021] Furthermore, a connecting piece is rotatably connected to the dust removal box;

[0022] The actuator assembly has a guide rod parallel to the sliding direction of the dust removal table, and the lower end of the connecting piece has a long hole extending up and down;

[0023] The guide rod is inserted into the long hole, so that the actuator remains stationary when the dust removal box vibrates up and down; and when the dust removal box is tilted up by the haircutting machine, the actuator is driven to slide up to unlock the brake mechanism.

[0024] Furthermore, a return spring is connected between the actuator and the movable frame to drive the actuator to move downward and stop the brake mechanism.

[0025] Furthermore, four groups of enclosures connected end to end are provided around the cavity to surround the haircutting machine; one group of the enclosures is configured as an openable and closable structure for entering and exiting the haircutting machine, and has a dust suction port connected to the dust suction mechanism.

[0026] Further, two groups of the spray guns are arranged in the spray mechanism, and the piston assembly includes a piston body and a piston rod connected to each other;

[0027] In the first group of spray guns, the water storage chamber and the piston rod are arranged on both sides of the piston body opposite to each other, and the one-way water outlet pipe is arranged through the piston body;

[0028] In the spray gun of the second group, the water storage chamber and the piston rod are located on the same side of the piston body, and the one-way water outlet pipe is arranged through the piston body.

[0029] Furthermore, a spring connected to the piston body is provided in the water storage chamber of each group of the spray guns, so as to automatically shrink the water storage chamber;

[0030] The spray dust suppression device also includes a pre-spraying mechanism arranged in front of the dust removal platform in the sliding direction, for pre-wetting the ground to be roughened;

[0031] It also includes a set of two-position three-way valves, and the one-way water outlet pipes of the two sets of spray guns are connected to a set of inlets of the two-position three-way valves; the pre-spraying mechanism and the dust removal box are each connected to a set of outlets of the two-position three-way valves;

[0032] The actuator is connected to the valve core of the two-position three-way valve so that after the actuator slides up, the pre-spray mechanism is connected to the spray gun; and after the actuator slides down, the dust removal box is connected to the spray gun.

[0033] On the other hand, the present invention also provides a method for using the spray dust suppression device for bridge construction as described above, comprising the following steps:

[0034] Assemble the hair cutting machine into the cavity of the dust removal table so that the lower end of the dust removal box contacts the upper end of the hair cutting machine;

[0035] The spray mechanism and the dust suction mechanism are started, the dust suction mechanism sucks the dust generated by the chiseling into the dust removal particles in the dust removal box, and the dust removal particles soaked by the spray mechanism absorb the dust.

[0036] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0037] In the spray dust suppression device and the use method thereof of the present invention, a group of mobile carts are arranged on the periphery of the haircutting machine, and the mobile carts are provided with a dust removal box, a spray mechanism and a dust suction mechanism; when in use, the dust suction mechanism sucks the dust generated by the haircutting into the dust removal box; because dust particles wetted by the spray are placed in the dust removal box, the dust needs to pass through the gaps between the densely packed dust particles during the discharge process, and this process increases the contact area between the dust particles and the dust, increases the adsorption effect on the dust, and can effectively reduce the overflow of dust generated by the haircutting machine.

[0038] In addition, the vibration of the chiseling machine itself can make the dust removal particles vibrate, which is beneficial for the dust removal particles to be wetted and cleaned by the spray, and it is convenient to discharge the generated dust-containing wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A top view of the spray dust suppression device of the present invention;

[0040] Figure 2 A three-dimensional diagram of the spray dust suppression device of the present invention;

[0041] Figure 3 A partial enlargement of the spray dust suppression device of the present invention Figure 1 ;

[0042] Figure 4 A partial enlargement of the spray dust suppression device of the present invention Figure 2 ;

[0043] Figure 5 The figure is a working principle diagram of a spray gun in one embodiment of the present invention;

[0044] Figure 6 The internal structure principle diagram of the dust removal box of the present invention;

[0045] Icons: 1-mobile frame, 10-roller, 11-water source, 12-pre-spraying mechanism, 2-dust removal table, 20-wing plate, 21-enclosure, 22-cavity, 3-dust removal box, 30-pressure relief valve, 31-dust removal particles, 32-waste water pipe, 4-hairing machine, 5-spray mechanism, 6-dust suction mechanism, 7-actuator, 70-guide rod, 71-connecting piece, 710-long hole, 73-reset spring, 74-sleeve, 8-brake mechanism, 80-brake block, 81-clamp, 810-slot, 9-spray gun, 90-water storage chamber, 91-piston body, 92-piston rod, 93-one-way water outlet pipe, 94-two-position three-way valve, 940-inlet, 941-outlet, 95-one-way water inlet pipe, 96-valve core. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Embodiment 1:

[0048] Reference Figures 1 to 6This embodiment provides a spray dust suppression device for bridge construction, including a mobile frame 1, a dust removal platform 2, a dust removal box 3, a spray mechanism 5 and a dust suction mechanism 6.

[0049] The mobile frame 1 is a body structure formed by welding steel pipes and steel bars, and four sets of rollers 10 are arranged at the lower end thereof for easy transfer; Figure 2 A notch is provided at one end of the mobile frame 1, so that the main body of the hand-push hair cutting machine can be easily pushed into the mobile frame 1.

[0050] The dust removal table 2 is arranged in the mobile frame 1. The lower end of the dust removal table 2 is provided with a cavity 22 capable of accommodating the main part of the hair cutting machine 4. After the main part of the hair cutting machine 4 is pushed into the cavity 22 and fixed, the whole mobile frame 1 can be driven to move when the hair cutting machine 4 is pushed.

[0051] Reference Figure 2 and Figure 6 Dust removal particles 31 are stacked inside the dust removal box 3. The dust removal particles 31 are sand particles or concrete particles with a particle size of several millimeters. They are stacked in the dust removal box 31 and are soaked in water. After the dust passes into the dust removal particles 31, the dust can be adsorbed by the water on the surface of the dust removal particles 31 during the overflow process along the gaps between the dust removal particles 31, and the contact working area for adsorbing the dust is greatly increased.

[0052] Among them, the dust removal box 3 can be elastically supported on the dust removal platform 2 above the cavity 22 by sliding up and down, that is, a guide groove is provided on the dust removal platform 2, and the dust removal box 3 can be slidably embedded in the guide groove. The lower end of the dust removal box 3 is supported on the dust removal platform 2 by a spring. After the hair cutting machine 4 is pushed into the cavity 22, the lower end of the dust removal box 3 contacts the top of the hair cutting machine 4. The hair cutting machine 4 will generate up and down vibrations during operation, and therefore, its vibration is transmitted to the dust removal box 3.

[0053] Reference Figure 2 The spray mechanism 5 is connected to a water source 11, and the water source 11 is a water tank installed at the front end of the mobile frame 1. Figure 6 The nozzle end of the spray mechanism 5 is installed inside the dust removal box 3. Under the pumping spray action of the spray mechanism 5, it can spray into the dust removal box 3 and continuously spray water onto the dust removal particles 31. The dust removal box 3 is driven by the haircutting machine 4 to vibrate, which can continuously vibrate and mix the water vapor formed by the spray with the dust removal particles 31, so that the dust removal particles 31 at various locations can be evenly soaked and cleaned, and the dust adsorbed on the surface of the dust removal particles 31 is mixed into sewage, which is discharged along the wastewater pipe 32 to the road surface being haircutted (a filter is provided on the wastewater pipe 32 to prevent the dust removal particles 31 from flowing out).

[0054] Reference Figure 2 and Figure 6The dust suction mechanism 6 is connected between the cavity 22 and the dust removal box 3 to pass the dust generated by the haircutting machine 4 into the dust removal particles 31 piled up in the dust removal box 3. The dust suction mechanism 6 is an industrial vacuum cleaner, and its air outlet is inserted into the lower part of the accumulated dust removal particles 31, so that the dust gas can contact more dust removal particles 31 to the greatest extent during the overflow process.

[0055] Reference Figure 2 Four groups of enclosures 21 connected end to end are arranged around the cavity 22 to surround the haircutting machine 4 and provide a nearly closed space for the dust generated by the haircutting machine 4, which can effectively prevent the dust from overflowing so that more dust can be absorbed by the dust collection mechanism 6.

[0056] Among them, refer to Figure 2 Among the four groups of enclosures 21, the enclosure 21 near the notch of the mobile frame 1 is an openable and closable structure, which has a dust suction port connected to the dust suction mechanism 6; one end of the enclosure 21 is hinged to the tail of the left group of enclosures 21, and the other end is detachably installed at the tail of the right group of enclosures 21.

[0057] In one embodiment, according to the power setting of the dust suction mechanism 6, the enclosure 21 near the notch of the mobile frame 1 can absorb dust and, at the same time, can also absorb the concrete particles produced after roughening into the dust removal box 3 as a supplement to the dust removal particles 31, and can also achieve the effect of cleaning the roughened surface; when adopting this design, the inner cavity of the dust removal box 3 needs to be set to be large / deep enough to accommodate more dust removal particles 31, and the top cover of the dust removal box 3 needs to be designed as a structure that is easy to disassemble, so that after the roughening is completed, the excess dust removal particles 31 inside can be cleaned up.

[0058] Embodiment 2:

[0059] Reference Figures 1 to 3 On the basis of the first embodiment, the dust removal platform 2 in this embodiment can be horizontally slidably arranged in the moving frame 1, that is, wing plates 20 are arranged on both sides of the dust removal platform 2, and the wing plates 20 are sleeved on the steel pipes of the moving frame 1.

[0060] Among them, the dust removal box 3 is also connected to an actuator 7, which is connected to the brake mechanism 8 of the roller 10 in the mobile frame 1. The dust removal box 3 is pried up and down by the chiseling machine 4, so that the actuator 7 unlocks the brake mechanism 8 after moving up and stops the brake mechanism 8 after moving down; specifically, in the process of the horizontal push chiseling machine 4 driving the dust removal platform 2 to move horizontally, the actuator 7 presses down the brake mechanism 8 of the roller 10, so that the roller 10 is locked and the mobile frame 1 cannot move. During this process, the chiseling machine 4 can move back and forth for chiseling; and when the handle of the chiseling machine 4 is pressed down, the chiseling machine 4 is supported by the wheels at its rear end and the front end is tilted, which can push the dust removal box 3 to move up. The upward movement of the dust removal box 3 drives the upward movement of the actuator 7, and then the brake mechanism 8 of the roller 10 can be unlocked.

[0061] In addition, refer to Figure 1 , Figure 3 and Figure 5 The spray mechanism 5 includes a spray gun 9 connected between a water source 11 and a dust removal box 3. The spray gun 9 is a piston chamber structure. The water storage chamber 90 of the spray gun 9 is provided with a group of piston assemblies for suction and drainage. The piston assembly includes a piston body 91 and a piston rod 92. The water storage chamber 90 is connected to the water source 11 through a one-way water inlet pipe 95 (provided with a one-way valve), and the water storage chamber 90 is connected to the dust removal box 3 through a one-way water outlet pipe 93 (provided with a one-way valve); wherein the spray gun 9 is arranged on a mobile frame 1, and a piston rod 92 in the piston assembly is connected to a dust removal platform 2, so as to drive the spray gun 9 to periodically absorb water and spray through the reciprocating sliding of the dust removal platform 2 in the mobile frame 1.

[0062] Through the above arrangement, when roughening an area, the roughening machine 4 can be pushed horizontally, and the movable frame 1 does not move. During the process, the reciprocating movement of the roughening machine 4 can drive the spray gun 9 to pump out water reciprocally, thereby providing spray for the spray mechanism 5 and the dust removal box 3; therefore, the outer side wall of the movable frame 1 can be wrapped with a cloth film (not shown) for dust isolation, so as to avoid the splashing of foreign particles during the roughening process.

[0063] On the other hand, when the roughening of one area is completed and the process is transferred to the next area, the movable frame 1 can be unlocked by tilting up the roughening machine 4. At this time, pushing the roughening machine 4 can drive the movement of the entire movable frame 1; when moving to the appropriate roughening area, the roughening machine 4 can be laid flat to lock the rollers 10 of the movable frame 1 again.

[0064] It is easy to understand that the actuator 7 can be any structure that can be slidably arranged on the mobile frame 1, which can be connected to the dust removal box 3, and the brake mechanism 8 is a common brake structure of the universal wheel / fixed wheel of a baby carriage, and the lower end of the actuator 7 can be connected to the brake mechanism 8.

[0065] In one embodiment, referring to Figure 4 The brake mechanism 8 includes a brake block 80 and a clip 81. The brake block 80 is fixed on the axle of the roller 10 and rotates synchronously with the roller 10. On any cross section perpendicular to the axis of the axle, the cross-sectional profile of the brake block 80 is a regular polygon, such as a triangle, a quadrilateral, a pentagon, a hexagon, etc.; the lower end of the clip 81 has a groove 810 with the same cross-sectional profile as the brake block 80, so that the brake block 80 can be inserted into the groove 810 after the clip 81 slides down, and the roller 10 cannot rotate. After the actuator 7 drives the clip 81 to move up and away from the brake block 80, the roller 10 can rotate.

[0066] As for the execution component 7, in one embodiment, refer to Figure 2 and Figure 3, a connecting piece 71 is rotatably connected to the dust box 3, that is, the connecting piece 71 can rotate in a vertical plane around a horizontal axis on the dust box 3; the actuator 7 is provided with a guide rod 70 parallel to the sliding direction of the dust removal table 2, and the lower end of the connecting piece 71 has an elongated hole 710 extending up and down; the guide rod 70 is inserted into the elongated hole 710; the purpose of setting the elongated hole 710 is: when the dust box 3 vibrates up and down, it does not drive the actuator 7 to move up and down, so that the actuator 7 is in a static state; and when the dust box 3 is tilted up by the haircutting machine 4, since the upward movement amplitude of the dust box 3 is much greater than the vibration amplitude, the actuator 7 can be driven to slide up by the connecting piece 71; the lower end of the actuator 7 is provided with a sliding sleeve 74 that is inserted into the moving frame 1, and the clip 81 is welded to the lower end of the sliding sleeve 74, thereby unlocking the brake mechanism 8.

[0067] Reference Figure 2 and Figure 3 In one embodiment, a return spring 73 is connected between the actuator 7 and the movable frame 1 to drive the actuator 7 to move downward and stop the brake mechanism 8. When the haircutting machine 4 pries the dust removal box 3 upward, the elastic force of the return spring 73 needs to be overcome.

[0068] Embodiment three:

[0069] On the basis of the second embodiment, in order to enable the movable frame 1 to be in a braked state, the spray gun 9 can continuously provide spray during the reciprocating movement of the haircutting machine 4 during the haircutting process.

[0070] In this embodiment, refer to Figure 5 Two groups of spray guns 9 are arranged in the spray mechanism 5 .

[0071] Among them, in the first group of spray guns 9, the water storage chamber 90 and the piston rod 92 are arranged opposite to each other on both sides of the piston body 91, and the one-way water outlet pipe 93 is arranged through the piston body 91; in the second group of spray guns 9, the water storage chamber 90 and the piston rod 92 are located on the same side of the piston body 91, and the one-way water outlet pipe 93 is arranged through the plug body 91; during the reciprocating movement of the dust removal platform 2, when one group of spray guns 9 is spraying water, there is always another group of spray guns 9 in a water storage state, which can alternately and uninterruptedly provide spray to the spray mechanism 5.

[0072] Wherein, a spring connected to the piston body 91 is provided in the water storage chamber 90 of each group of spray guns 9, so as to make the water storage chamber 90 automatically contract.

[0073] Embodiment 4:

[0074] In this embodiment, refer to Figure 1The spray dust reduction device also includes a pre-spraying mechanism 12 arranged in front of the dust removal platform 2 in the sliding direction, which is used to pre-wet the ground to be roughened regionally. The regional pre-wetting step can avoid the rapid evaporation of water after the entire beam surface is pre-wetted in the hot summer environment, causing some areas to be dried before roughening. Therefore, the regional pre-wetting step saves more water.

[0075] It also includes a group of two-position three-way valves 94, the one-way water outlet pipes 93 of the two groups of spray guns 9 are connected to a group of inlets 940 of the two-position three-way valves 94, the pre-spray mechanism 12 and the dust removal box 3 are respectively connected to a group of outlets 941 of the two-position three-way valve 94; the actuator 7 is connected to the valve core 96 of the two-position three-way valve 94, so that after the actuator 7 slides up, the pre-spray mechanism 12 is connected to the spray gun 9. At this time, the movable frame 1 is in a transfer state, and the next roughening ground can be pre-sprayed; after the actuator 7 slides down, the pre-spraying ends, the dust suction mechanism 6 in the dust removal box 3 is connected to the spray gun 9, and the movable frame 1 is in a locked state, which can facilitate spray dust removal during the reciprocating movement of the roughening machine 4.

[0076] Embodiment five:

[0077] This embodiment also provides a method for using the spray dust suppression device for bridge construction as in the aforementioned embodiment 1, comprising the following steps:

[0078] First, the hair cutting machine 4 is assembled into the cavity 22 of the dust removal table 2, so that the lower end of the dust removal box 3 contacts the upper end of the hair cutting machine 4, and the enclosure 21 is closed, so that the hair cutting machine 4 can move synchronously with the dust removal table 2;

[0079] Secondly, the spray mechanism 5 and the dust suction mechanism 6 are started, the dust suction mechanism 6 sucks the dust generated by the chiseling into the dust removal particles 31 in the dust removal box 3, and the dust removal particles 31 after being soaked are adsorbed by the spray mechanism 5; the dust-containing wastewater is discharged along the wastewater pipe 32.

[0080] The pipelines involved in the above-mentioned several embodiments are all hoses.

[0081] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spray dust suppression device for bridge construction, characterized in that: include: Mobile frame; A dust removal platform is arranged in the movable frame, and a cavity capable of accommodating the hair cutting machine is arranged inside the lower end of the dust removal platform; A dust box, in which dust particles are stacked, the dust box can be elastically supported on the dust table above the cavity by sliding up and down, so that the chiseling machine can contact the lower end of the dust box and transmit vibration; a spray mechanism capable of spraying into the interior of the dust removal box, and the spray mechanism is disposed in the moving frame; and A dust collecting mechanism connected between the cavity and the dust removal box to pass the dust generated by the haircutting machine into the dust removal particles stacked in the dust removal box; The dust removal platform can be horizontally slidably arranged in the mobile frame; The outer side wall of the movable frame is wrapped with a cloth film for dust isolation; The dust removal box is also connected to an actuator, which is connected to the brake mechanism of the roller in the mobile frame. The dust removal box is pried up and down by the chiseling machine, so that the actuator unlocks the brake mechanism after moving up and stops the brake mechanism after moving down. The spray mechanism includes a water source and a spray gun connected between the water source and the dust removal box; the water storage chamber of the spray gun is provided with a group of piston assemblies for suction and discharge of water, wherein the water storage chamber is connected to the water source through a one-way water inlet pipe and is connected to the dust removal box through a one-way water outlet pipe; The spray gun is arranged on the moving frame, and the piston assembly is connected to the dust removal platform, so that the dust removal platform slides back and forth in the moving frame to drive the spray gun to absorb water and spray periodically; The brake mechanism includes a brake block and a clamp; The actuator assembly can be slidably mounted on the moving frame; The brake block is fixed on the wheel axle of the roller, and the cross-sectional profile of the brake block is a regular polygon on any cross section perpendicular to the axis of the wheel axle; The clip is arranged on the actuator, and has a slot at the lower end thereof matching the cross-sectional profile of the brake block, so that the brake block can be inserted into the slot after the clip slides down; The dust removal box is rotatably connected with a connecting piece; The actuator assembly has a guide rod parallel to the sliding direction of the dust removal table, and the lower end of the connecting piece has a long hole extending up and down; The guide rod is inserted into the long hole, so that the actuator remains stationary when the dust removal box vibrates up and down; and when the dust removal box is tilted up by the haircutting machine, the actuator is driven to slide up to unlock the brake mechanism.

2. The spray dust suppression device for bridge construction according to claim 1, characterized in that: A return spring is connected between the actuator and the moving frame to drive the actuator to move downward and stop the brake mechanism.

3. The spray dust suppression device for bridge construction according to claim 1, characterized in that: Four groups of enclosures connected end to end are arranged around the cavity to surround the haircutting machine; one group of the enclosures is configured as an openable and closable structure for entering and exiting the haircutting machine, and has a dust suction port connected to the dust suction mechanism.

4. The spray dust suppression device for bridge construction according to claim 1, characterized in that: Two groups of spray guns are arranged in the spray mechanism, and the piston assembly includes a piston body and a piston rod connected to each other; In the first group of spray guns, the water storage chamber and the piston rod are arranged on both sides of the piston body opposite to each other, and the one-way water outlet pipe is arranged through the piston body; In the spray gun of the second group, the water storage chamber and the piston rod are located on the same side of the piston body, and the one-way water outlet pipe is arranged through the piston body.

5. The spray dust suppression device for bridge construction according to claim 4, characterized in that: A spring connected to the piston body is provided in the water storage chamber of each group of the spray guns, so as to automatically shrink the water storage chamber; The spray dust suppression device also includes a pre-spraying mechanism arranged in front of the dust removal platform in the sliding direction, for pre-wetting the ground to be roughened; It also includes a set of two-position three-way valves, and the one-way water outlet pipes of the two sets of spray guns are connected to a set of inlets of the two-position three-way valves; the pre-spraying mechanism and the dust removal box are each connected to a set of outlets of the two-position three-way valves; The actuator is connected to the valve core of the two-position three-way valve so that after the actuator slides up, the pre-spray mechanism is connected to the spray gun; and after the actuator slides down, the dust removal box is connected to the spray gun.

6. A method for using the spray dust suppression device for bridge construction as claimed in any one of claims 1 to 5, characterized in that: The steps include: Assemble the hair cutting machine into the cavity of the dust removal table so that the lower end of the dust removal box contacts the upper end of the hair cutting machine; The spray mechanism and the dust suction mechanism are started, the dust suction mechanism sucks the dust generated by the chiseling into the dust removal particles in the dust removal box, and the dust removal particles soaked by the spray mechanism absorb the dust.

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