Dust suppression excavation device for building construction

Abstract

The invention relates to the technical field of earthwork excavation, and discloses a dust suppression earthwork excavation device for building construction, which comprises an excavator body and an excavator arm arranged on the excavator body, and the end, far away from the excavator body, of the excavator arm is rotatably provided with an excavator bucket through a rotating shaft; a plurality of supporting pipes are symmetrically arranged at the end, close to the excavator bucket, of the excavator arm, atomizing nozzles are arranged at the ends of the supporting pipes, and a plurality of liquid pumping assemblies matched with the supporting pipes are arranged on the excavator body. According to the dust suppression excavation device for building construction, through extension of an electric push rod, a linkage ring can be driven to slide, an ejector rod is pulled, a supporting pipe is made to rotate, and therefore the angle of an atomization spray head is adjusted, the atomization range can be adjusted according to actual working conditions through the design, and compared with a spray head with a fixed angle, the dust suppression excavation device can better adapt to the complex construction environment; the dust suppression efficiency is improved, dust drifting in the air is reduced, the air quality of a construction site is improved, and the environment and the health of workers are protected.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of earth excavation, and in particular to a dust suppression earth excavation device for building construction. BACKGROUND

[0002] Dust suppression earth excavation for building construction refers to an engineering measure for dust suppression in the operation area through technical means or equipment during earth excavation, so as to reduce dust pollution, improve the construction environment and meet the environmental protection requirements. Earth excavation is a basic link of building construction, and is related to loosening, crushing, excavation and transportation of soil and rock, and is suitable for scenes such as foundation excavation, underground cavern excavation and river dredging. Dust suppression earth excavation is based on this, and dust suppression technology is integrated to actively control the dust generated during excavation.

[0003] According to the search, a dust suppression earth excavation device for building construction is disclosed in Chinese Patent No. CN113898022A, which comprises an excavator, an atomization mechanism and a conveying mechanism. The atomization mechanism comprises a water tank, a heat pipe and a fan. One end of the heat pipe is connected to the water tank, and the other end is connected to an atomization tank after winding the engine of the excavator. The heat pipe is used to obtain heat from the engine. The conveying mechanism comprises a conveying pipe and a spray head. One end of the conveying pipe is connected to the atomization tank through the fan to obtain water mist. The other end of the conveying pipe extends along the excavator arm and is connected to the spray head. The spray head is arranged around the end of the excavator arm and is used to output water mist to form a water curtain to cover the excavation area. The spray device is directly installed on the excavator and moves with the excavator. The spray device obtains heat from the engine of the excavator as an auxiliary cooling system to atomize water and deliver the atomized water to the end of the excavator arm for precise dust suppression, thereby ensuring dust suppression at the construction site and effectively saving water resources. However, the above-mentioned device has the following disadvantages in actual use:

[0004] The above-mentioned device adopts the technical scheme of arranging the spray head around the end of the excavator arm to form a water curtain for dust suppression. Although this device can effectively reduce the dust generated during operation to a certain extent, when the excavator uses the bucket to perform the excavation action and the bucket full of soil is transported through the machine body, the dust will spread to the two sides or the rear area of the machine body. The spread range of the dust is obviously different from the dust distribution during the excavation stage. However, the spray head is usually fixedly installed, and its spray angle, coverage radius and water curtain shape cannot be dynamically adjusted according to the real-time changes of the excavation action. Therefore, the water curtain dust suppression range cannot be accurately matched with the actual dust spread area during the actual operation, which restricts the further improvement of the overall dust suppression effect. SUMMARY

[0005] The technical problem to be solved by the present application is that in the prior art, a water curtain dust suppression device is arranged around the end of the excavator arm, which can suppress dust, but the dust generated during excavation and transportation spreads to the two sides or the back of the machine body, the range is different from that in the excavation stage, the fixed spray head cannot be dynamically adjusted, the water curtain and the dust area are difficult to match, and the dust suppression effect is limited.

[0006] To achieve the above object, the following technical scheme is adopted in the present application: A dust suppression earth excavation device for building construction, comprising an excavator body and an excavator arm arranged on the excavator body, wherein one end of the excavator arm away from the excavator body is rotatably installed with a bucket through a rotating shaft, one end of the excavator arm close to the bucket is symmetrically provided with a plurality of support pipes, and the end of the support pipe is provided with an atomizing nozzle, the excavator body is provided with a pump liquid assembly matched with the plurality of support pipes, the two side surfaces of the excavator arm are rotatably installed with a fog gun barrel through a support shaft, and the support pipe and the atomizing nozzle are located inside the fog gun barrel, the inside of the fog gun barrel is provided with a control assembly corresponding to the support pipe, the inner wall of the opening end of the fog gun barrel is provided with an adjusting assembly corresponding to the support pipe, and the end of the excavator arm is provided with a swing assembly corresponding to the two fog gun barrels.

[0007] The control assembly comprises an electric push rod fixedly installed on the inner wall of the fog gun barrel, and the inner wall of the sliding sliding plate is fixedly connected with the extension end of the electric push rod.

[0008] The adjusting assembly comprises a guide plate fixedly installed on the inner wall of the fog gun barrel through a support, a linkage ring is slidably installed on the side surface of the guide plate, and the side surface of the guide plate is provided with two springs fixedly connected with the guide plate and the linkage ring at both ends.

[0009] Preferably, the pump liquid assembly comprises a water tank fixedly installed on the excavator body, the top surface of the water tank is provided with a pump group, the liquid outlet end of the pump group is fixedly installed with a conduit, and the end of the conduit away from the pump group is communicated with the plurality of support pipes through a communication pipe.

[0010] Preferably, the opening end of the fog gun barrel is rotatably installed with a cover plate through a mounting shaft and a torsional spring.

[0011] Preferably, one end of the support pipe close to the cover plate is bent, and the atomizing nozzle is connected with the bent end of the support pipe.

[0012] Preferably, the inner wall of the sliding arc plate is fixedly installed with a plurality of support rods corresponding to the support pipes, the outer wall of the support pipe is fixedly installed with a connecting block, the connecting block is rotatably connected with the end of the support rod through a mounting rod, the end of the mounting rod is sleeved with a torsional spring, and the two ends of the torsional spring are fixedly connected with the mounting rod and the support rod, respectively.

[0013] Preferably, the inner wall of the fog gun barrel is fixedly provided with a plurality of fixed plates corresponding to the support pipe, the side surface of the fixed plate is provided with a jacking rod penetratingly, and the jacking rod is hingedly connected with the outer wall of the linkage ring.

[0014] Preferably, the end of the jacking rod is provided with an arc shape matched with the outer wall of the support pipe.

[0015] Preferably, the telescopic end of the electric push rod is fixedly provided with a connecting rod slidingly connected with the inner wall of the linkage ring, the outer wall of the connecting rod is fixedly provided with a fixed push ring, and the end of the connecting rod away from the electric push rod is fixedly provided with a push block corresponding to the cover plate.

[0016] Preferably, the swing assembly comprises a protective shell fixedly installed at the connecting end of the excavator arm and the excavator bucket, the inner wall of the protective shell is symmetrically fixedly provided with two sealing barrels, the two sealing barrels are penetratingly provided with a shaft rod, the shaft rod and the rotating shaft are drivingly connected through a driven wheel and a synchronous belt, the inner wall of each of the two sealing barrels is slidingly provided with a piston plate through a sliding groove and a sliding block, and the piston plate is threadedly sleeved on the shaft rod.

[0017] Preferably, the end of the support shaft is fixedly provided with a transmission gear, the two side surfaces of the excavator arm are slidingly provided with a drive rack engaged with the transmission gear, the two side surfaces of the excavator arm are fixedly provided with a pneumatic telescopic rod corresponding to the drive rack, the two pneumatic telescopic rods are connected and communicated with the two sealing barrels through an air pipe, and the side surface of the excavator arm is fixedly provided with a protective box corresponding to the transmission gear and the drive rack.

[0018] The technical effects and advantages of the present application are as follows:

[0019] In the present application, in the initial state, the support pipe and the atomizing nozzle are accommodated inside the fog gun barrel, and the cover plate blocks the opening, effectively preventing dust from entering and avoiding the accumulation of dust in the internal components, which may cause a decrease in atomization effect or mechanical failure, thereby prolonging the service life of the equipment. When in use, the electric push rod can be controlled to drive the support pipe and the atomizing nozzle to extend out of the fog gun barrel, so that the equipment quickly enters the working state. This design not only ensures dust protection and protection when the equipment is idle, but also enables quick use when needed, thereby improving the convenience and flexibility of use and reducing maintenance costs and downtime caused by dust intrusion.

[0020] In the present application, by continuously extending the electric push rod, the linkage ring can be slid and the jacking rod can be pulled, so that the support pipe rotates under the action of the torsional spring, thereby adjusting the angle of the atomizing nozzle. This design allows the atomization range to be adjusted according to actual working conditions, which can better adapt to complex construction environments, improve dust suppression efficiency, reduce the scattering of dust in the air, and help improve the air quality of the construction site, thereby protecting the environment and the health of workers.

[0021] In the present application, by setting, during the digging and closing of the bucket, the mist gun barrel can automatically adjust the position according to the action of the bucket. When digging, the mist gun barrel is aimed at the position of the bucket contacting the soil to suppress the initial dust. When closing, the bucket drives the rotating shaft to rotate, drives the mist gun barrel to rotate and unfold outward, covering a large range of dust generated by the soil in the bucket. This automatic adjustment mechanism ensures that the mist gun barrel can effectively and accurately suppress dust in different states of the bucket, realizes the whole process dust control, and improves the comprehensiveness and effectiveness of dust suppression. BRIEF DESCRIPTION OF DRAWINGS

[0022] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts:

[0023] Figure 1 for the overall structure of the present application Figure 1 ;

[0024] Figure 2 for the overall structure of the present application Figure 2 ;

[0025] Figure 3 for Figure 2 the enlarged structure schematic view of A in the present application;

[0026] Figure 4 for the structure schematic view of the mist gun barrel of the present application;

[0027] Figure 5 for the structure schematic view of the mist gun barrel of the present application Figure 1 ;

[0028] Figure 6 for the structure schematic view of the mist gun barrel of the present application Figure 2 ;

[0029] Figure 7 for Figure 6 the enlarged structure schematic view of B in the present application;

[0030] Figure 8 for the structure schematic view of the connecting rod of the present application;

[0031] Figure 9 for the internal structure schematic view of the protective shell of the present application;

[0032] Figure 10 for the structure schematic view of the sealing barrel of the present application.

[0033] Legend: 11, excavator body; 12, excavator arm; 13, excavator bucket; 21, fog gun barrel; 22, support pipe; 23, atomizing nozzle; 24, water tank; 25, pump set; 26, conduit; 27, communication pipe; 28, cover plate; 31, electric push rod; 32, sliding arc plate; 33, support rod; 34, connecting block; 35, torsional spring; 41, guide plate; 42, linkage ring; 43, spring; 44, fixed plate; 45, jacking rod; 46, pull rod; 51, connecting rod; 52, fixed push ring; 53, push block; 61, protective shell; 62, sealing cylinder; 63, shaft; 64, piston plate; 65, transmission gear; 66, pneumatic telescopic rod; 67, drive rack; 68, air pipe; 69, protective box. DETAILED DESCRIPTION

[0034] It is easy to understand that, according to the technical solution of the present application, those skilled in the art can propose a variety of structural modes and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary descriptions of the technical solution of the present application, and should not be considered as the whole or as a limitation or restriction on the technical solution of the present application.

[0035] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The present application provides a technical solution: a dust suppression earthwork excavating device for construction, comprising an excavator body 11 and an excavator arm 12 arranged on the excavator body 11, and an excavator bucket 13 rotatably mounted on the end of the excavator arm 12 away from the excavator body 11, a plurality of support pipes 22 symmetrically arranged on the end of the excavator arm 12 close to the excavator bucket 13, and atomizing nozzles 23 arranged on the end of the support pipes 22, a pump liquid assembly adapted to the plurality of support pipes 22 arranged on the excavator body 11, and a fog gun barrel 21 rotatably mounted on the two side surfaces of the excavator arm 12 through support shafts, and the support pipes 22 and the atomizing nozzles 23 are located inside the fog gun barrel 21.

[0036] The pump liquid assembly comprises a water tank 24 fixedly installed on the excavator body 11, a pump set 25 arranged on the top surface of the water tank 24, a conduit 26 fixedly installed on the liquid outlet end of the pump set 25, and a communication pipe 27 connecting the plurality of support pipes 22 with the end of the conduit 26 away from the pump set 25, a cover plate 28 rotatably mounted on the open end of the fog gun barrel 21 through a mounting shaft and a torsional spring, the end of the support pipe 22 close to the cover plate 28 is bent, and the atomizing nozzle 23 is connected to the bent end of the support pipe 22.

[0037] In the initial state, the support pipe 22, the atomizing nozzle 23 and the like are located inside the fog gun barrel 21, under the action of the torsion spring, the cover plate 28 can block the opening end of the fog gun barrel 21, so as to reduce the dust and the like from entering the inside of the fog gun barrel 21 to affect the atomization effect of the atomizing nozzle 23, and when the earthwork is excavated, the operator can control the excavator body 11, so that the excavator arm 12 cooperates with the excavator bucket 13 to excavate the earthwork; and in the process of excavating the earthwork, the support pipe 22 and the atomizing nozzle 23 can be extended out of the fog gun barrel 21, and under the action of the pump set 25, the water in the water tank 24 is sprayed out through the conduit 26, the communication pipe 27, the support pipe 22 and the atomizing nozzle 23, so as to achieve the effect of dust suppression, so that the dust floating in the air during the earthwork excavation is less, which is helpful for environmental protection.

[0038] Referring to Figures 5-7 As shown in the figure, the inside of the fog gun barrel 21 is provided with a control assembly corresponding to the support pipe 22, the control assembly comprises an electric push rod 31 fixedly installed on the inner wall of the fog gun barrel 21, the inner wall of the fog gun barrel 21 is slidably provided with a sliding arc plate 32, the telescopic end of the electric push rod 31 is fixedly connected with the inner wall of the sliding arc plate 32, the inner wall of the sliding arc plate 32 is fixedly provided with a plurality of support rods 33 corresponding to the support pipe 22, the outer wall of the support pipe 22 is fixedly provided with a connecting block 34, the connecting block 34 is rotatably connected with the end of the support rod 33 through a mounting rod, the end of the mounting rod is sleeved with a torsion spring 35, and the two ends of the torsion spring 35 are fixedly connected with the mounting rod and the support rod 33.

[0039] In the non-use state, the support pipe 22 and the atomizing nozzle 23 are located inside the fog gun barrel 21, and in use, the operator can control the electric push rod 31 to elongate the electric push rod 31, which can drive the sliding arc plate 32 to slide on the inner wall of the fog gun barrel 21, so as to drive the support pipe 22 and the atomizing nozzle 23 to move through the support rod 33 and the connecting block 34, and in the moving process, the cover plate 28 can be first pushed to make the cover plate 28 rotate to expose the opening end of the fog gun barrel 21, and with the elongation of the electric push rod 31, the support pipe 22 and the atomizing nozzle 23 can be driven to extend out of the fog gun barrel 21 through the sliding arc plate 32, and the atomizing nozzle 23 is opened to achieve the effect of dust suppression.

[0040] Referring to Figure 5 and Figure 8As shown, the inner wall of the opening end of the fog gun barrel 21 is provided with an adjusting assembly corresponding to the support pipe 22, the adjusting assembly comprises a guide plate 41 fixedly installed on the inner wall of the fog gun barrel 21, a linkage ring 42 slidingly installed on the side surface of the guide plate 41, and two springs 43 fixedly connected with the guide plate 41 and the linkage ring 42 at both ends of the side surface of the guide plate 41, and a plurality of fixing plates 44 corresponding to the support pipe 22 are fixedly installed on the inner wall of the fog gun barrel 21, a top rod 45 penetratingly arranged on the side surface of the fixing plate 44, and the end of the top rod 45 is provided in an arc shape matched with the outer wall of the support pipe 22, and a pull rod 46 is hinged between the outer wall of the top rod 45 and the linkage ring 42;

[0041] The telescopic end of the electric push rod 31 is fixedly installed with a connecting rod 51 slidingly connected with the inner wall of the linkage ring 42, the outer wall of the connecting rod 51 is fixedly sleeved with a fixed push ring 52, and the end of the connecting rod 51 away from the electric push rod 31 is fixedly installed with a push block 53 corresponding to the cover plate 28.

[0042] In the process of moving the support pipe 22, the support pipe 22 is connected with the support rod 33 through the connecting block 34, and the end of the support pipe 22 connected with the atomizing nozzle 23 is limited by the top rod 45, so that the support pipe 22 can normally move, if it is necessary to adjust the angle of the atomizing nozzle 23, the staff can continue to elongate the electric push rod 31, at this time the connecting rod 51 can drive the linkage ring 42 to slide along the guide plate 41 and compress the spring 43 through the fixed push ring 52, and when the linkage ring 42 slides, the top rod 45 can be pulled through the pull rod 46 due to the sliding connection between the top rod 45 and the fixing plate 44 and the hinge connection between the outer wall of the linkage ring 42 and the pull rod 46, so that the top rod 45 moves away from the support pipe 22, at this time the support pipe 22 can rotate at the end of the support rod 33 through the connecting block 34 under the action of the torsional spring 35, so that the angle of the support pipe 22 and the atomizing nozzle 23 is adjusted, the adjustment of the atomizing range of the atomizing nozzle 23 is realized, so as to cope with different use conditions; after the earth excavation operation is completed, the electric push rod 31 can be shortened, the fixed push ring 52 and the linkage ring 42 can be reset under the action of the spring 43 when the electric push rod 31 is initially shortened, the angle of the support pipe 22 is restored, and with the continuous shortening of the electric push rod 31, the support pipe 22 and the atomizing nozzle 23 can be moved to be stored in the fog gun barrel 21, and when the push block 53 is separated from the cover plate 28, the cover plate 28 covers the opening end of the fog gun barrel 21 under the action of the torsional spring.

[0043] Referring to Figure 3 , Figure 4 , Figure 9 and Figure 10As shown, the end of the excavator arm 12 is provided with a swing assembly corresponding to the two fog gun barrels 21, which includes a protective shell 61 fixedly installed at the end of the excavator arm 12 connected with the excavator bucket 13, and the inner wall of the protective shell 61 is symmetrically fixedly installed with two sealing barrels 62, and the shaft 63 is penetratingly arranged between the two sealing barrels 62, and the shaft 63 is drivingly connected with the rotating shaft through a driven wheel and a synchronous belt, and the inner wall of the two sealing barrels 62 is slidingly installed with a piston plate 64 through a sliding groove and a sliding block, and the piston plate 64 is threadedly sleeved on the shaft 63.

[0044] The end of the supporting shaft is fixedly installed with a transmission gear 65, and the two side surfaces of the excavator arm 12 are slidingly installed with a driving rack 67 engaged with the transmission gear 65, and the two side surfaces of the excavator arm 12 are fixedly installed with a pneumatic telescopic rod 66 corresponding to the driving rack 67, and the two pneumatic telescopic rods 66 are connected in communication with the two sealing barrels 62 through an air pipe 68, and the side surface of the excavator arm 12 is fixedly installed with a protective box 69 corresponding to the transmission gear 65 and the driving rack 67.

[0045] In the process of excavating the soil by the excavator bucket 13, the excavator bucket 13 is unfolded to excavate the soil, at this time the fog gun barrels 21 are located in the state of Figure 4 The two fog gun barrels 21 on the two sides of the excavator arm 12 can be aligned with the excavator bucket 13 to suppress the dust generated when the excavator bucket 13 contacts the soil, and in the process of folding the excavator bucket 13 after excavating the soil, at this time the excavator bucket 13 can drive the rotating shaft to rotate, and the rotating shaft can drive the shaft 63 to rotate through the driven wheel and the synchronous belt, the shaft 63 is screwed with the piston plate 64, and the piston plate 64 is slidingly connected with the inner wall of the sealing barrel 62 through the sliding groove and the sliding block, so that the shaft 63 can drive the piston plate 64 to slide along the sliding groove when rotating, so that the inside of the sealing barrel 62 is in a negative pressure state, that is, the gas in the pneumatic telescopic rod 66 can be sucked into the sealing barrel 62 through the air pipe 68, and the pneumatic telescopic rod 66 can be shortened to drive the driving rack 67 to slide, so that the transmission gear 65 and the fog gun barrel 21 are rotated and unfolded outward to suppress the large range of dust generated by the soil in the excavator bucket 13 when the excavator body 11 is rotated, and in the process of unfolding and excavating the soil again, the fog gun barrel 21 can be reversed to align with the excavator bucket 13 again, so that the fog gun barrel 21 can effectively and accurately suppress the dust of the excavator bucket 13 in different states.

[0046] Working principle: in use, the initial state, support tube 22, atomizing nozzle 23, etc. are located in the inside of the fog gun barrel 21, under the action of torsional spring, cover plate 28 can be sealed to the opening end of the fog gun barrel 21, reduce dust into the inside of the fog gun barrel 21 influence atomizing nozzle 23 atomizing effect, and in the process of earth excavation, workers can control the excavator body 11, make the excavator arm 12 and excavator bucket 13 cooperate to excavate earthwork; while in the process of earth excavation, support tube 22 and atomizing nozzle 23 can be extended out of the fog gun barrel 21, and under the action of pump group 25, the water in water tank 24 is sprayed into atomizing nozzle 23 through conduit 26, communication pipe 27, support tube 22, which plays a dust suppression effect, so that the dust in the air during earth excavation is less, which is helpful to environmental protection;

[0047] In non-use state, support tube 22, atomizing nozzle 23 are located in the inside of the fog gun barrel 21, and in use, workers can control the electric push rod 31 to make the electric push rod 31 elongate, the electric push rod 31 elongate can drive the sliding slide plate to slide on the inner wall of the fog gun barrel 21, so as to drive the support tube 22 and atomizing nozzle 23 to move through the support rod 33 and connecting block 34, and the electric push rod 31 elongate can drive the connecting rod 51, fixed push ring 52 and push block 53 to move synchronously, in the process of moving, the push block 53 can first drive the cover plate 28 to make the cover plate 28 rotate to expose the opening end of the fog gun barrel 21, with the elongation of the electric push rod 31, the support tube 22 and atomizing nozzle 23 can be driven out of the fog gun barrel 21 through the sliding arc plate 32, and the fixed push ring 52 is in contact with the linkage ring 42 at this time, but the linkage ring 42 is not driven, the atomizing nozzle 23 is opened, which can realize the dust suppression effect;

[0048] In the process of moving the support tube 22, the support tube 22 is connected with the support rod 33 through the connecting block 34, and the end of the support tube 22 connected with the atomizing nozzle 23 is limited by the jack 45, so that the support tube 22 can move normally, if it is necessary to adjust the angle of the atomizing nozzle 23, the worker can continue to elongate the electric push rod 31, at this time the connecting rod 51 can drive the linkage ring 42 to slide along the guide plate 41 and compress the spring 43 through the fixed push ring 52, and when the linkage ring 42 slides, the jack 45 is connected with the fixed plate 44 through the pull rod 46 and is hinged with the outer wall of the linkage ring 42, so that when the linkage ring 42 slides, the jack 45 can be pulled through the pull rod 46, so that the jack 45 moves away from the support tube 22, at this time, under the action of the torsional spring 35, the support tube 22 can rotate through the connecting block 34 at the end of the support rod 33, so that the angle of the support tube 22 and the atomizing nozzle 23 is adjusted, the adjustment of the atomizing range of the atomizing nozzle 23 is realized, in order to cope with different use conditions;

[0049] In the process of excavating, when the excavator bucket 13 is expanded to excavate soil, the fog gun barrel 21 is locatedFigure 4 When the excavator body 11 is in the state of digging soil, the mist gun barrels 21 on both sides of the excavator arm 12 can be aligned with the excavating bucket 13, so as to suppress dust when the excavating bucket 13 contacts the soil, and in the process of folding the excavating bucket 13 after the soil is excavated, the excavating bucket 13 can drive the rotating shaft to rotate, and the rotating shaft can drive the shaft rod 63 to rotate through the driven wheel and the synchronous belt, the shaft rod 63 is screwed with the piston plate 64, and the piston plate 64 is slidably connected with the inner wall of the sealing barrel 62 through the sliding groove and the sliding block, so that the shaft rod 63 can drive the piston plate 64 to slide along the sliding groove when the shaft rod 63 rotates, so that the inside of the sealing barrel 62 is in a negative pressure state, that is, the gas in the pneumatic telescopic rod 66 can be sucked into the sealing barrel 62 through the air pipe 68, and the pneumatic telescopic rod 66 can be shortened to drive the driving rack 67 to slide, so that the transmission gear 65 and the mist gun barrel 21 rotate outward to expand, so as to suppress a large range of dust generated by the soil in the excavating bucket 13 when the excavator body 11 rotates, and in the process of expanding and excavating the excavating bucket 13 again, the mist gun barrel 21 can be reversed to align with the excavating bucket 13 again, so as to ensure that the mist gun barrel 21 can effectively and accurately suppress the excavating bucket 13 in different states;

[0050] After the earthwork excavation operation is completed, the electric push rod 31 can be shortened, and the fixed push ring 52 and the linkage ring 42 can be reset under the action of the spring 43, the angle of the supporting pipe 22 is restored, and with the continuous shortening of the electric push rod 31, the supporting pipe 22 and the atomizing nozzle 23 can be moved to be stored in the mist gun barrel 21, and when the push block 53 is separated from the cover plate 28, the cover plate 28 covers the opening end of the mist gun barrel 21 under the action of the torsional spring.

[0051] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and modifications to the above embodiments without departing from the technical idea of the present application, and these modifications and modifications should be within the protection scope of the present application.

Claims

1. A dust suppression earthwork excavation device for construction, comprising an excavator body (11) and an excavator arm (12) arranged on the excavator body (11), wherein an end of the excavator arm (12) away from the excavator body (11) is rotatably mounted with a bucket (13) via a rotating shaft, and an end of the excavator arm (12) close to the bucket (13) is symmetrically provided with a plurality of support tubes (22), and an atomizing nozzle (23) is provided at the end of the support tube (22), and a pump fluid assembly adapted to the plurality of support tubes (22) is provided on the excavator body (11), characterized in that: The two side surfaces of the excavator arm (12) are rotatably mounted with fog cannon barrels (21) via support shafts, and the support tube (22) and the atomizing nozzle (23) are located inside the fog cannon barrel (21); a control component corresponding to the support tube (22) is provided on the inside of the fog cannon barrel (21); an adjustment component corresponding to the support tube (22) is provided on the inner wall of the open end of the fog cannon barrel (21); and a swing component corresponding to the two fog cannon barrels (21) is provided at the end of the excavator arm (12); The control assembly comprises an electric push rod (31) fixedly mounted on the inner wall of the fog cannon barrel (21), a sliding arc plate (32) is slidably mounted on the inner wall of the fog cannon barrel (21), and the telescopic end of the electric push rod (31) is fixedly connected to the inner wall of the sliding slide plate; The adjustment assembly comprises a guide plate (41) fixedly mounted on the inner wall of the fog cannon barrel (21) via a bracket, a linkage ring (42) being slidably mounted on the side of the guide plate (41), and a spring (43) having two ends fixedly connected to the guide plate (41) and the linkage ring (42) respectively on the side of the guide plate (41).

2. The dust suppression earthwork excavation device for construction according to claim 1, characterized in that: The pump liquid assembly comprises a water tank (24) fixedly mounted on the excavator body (11); a pump group (25) is provided on the top surface of the water tank (24); a conduit (26) is fixedly mounted on the liquid outlet end of the pump group (25); and an end of the conduit (26) away from the pump group (25) is connected to a plurality of support pipes (22) via a connecting pipe (27).

3. The dust suppression earthwork excavation device for construction according to claim 1, characterized in that: The open end of the fog cannon barrel (21) is rotatably mounted with a cover plate (28) via a mounting shaft and a torsion spring.

4. The dust suppression earthwork excavation device for construction according to claim 3, characterized in that: One end of the support tube (22) close to the cover plate (28) is bent, and the atomizing nozzle (23) is connected to the bent end of the support tube (22).

5. The dust suppression earthwork excavation device for construction according to claim 1, characterized in that: A plurality of support rods (33) corresponding to the support tube (22) are fixedly mounted on the inner wall of the sliding arc plate (32), a connecting block (34) is fixedly mounted on the outer wall of the support tube (22), and the connecting block (34) is rotatably connected to the end of the support rod (33) through a mounting rod, a torsion spring (35) is sleeved on the end of the mounting rod, and the two ends of the torsion spring (35) are fixedly connected to the mounting rod and the support rod (33) respectively.

6. The dust suppression earthwork excavation device for construction according to claim 3, characterized in that: A plurality of fixing plates (44) corresponding to the support tube (22) are fixedly installed on the inner wall of the fog cannon barrel (21), a top rod (45) is provided through the side of the fixing plate (44), and a pull rod (46) is hinged between the top rod (45) and the outer wall of the linkage ring (42).

7. The dust suppression earthwork excavation device for construction according to claim 6, characterized in that: The end of the push rod (45) is configured to be in an arc shape that matches the outer wall of the support tube (22).

8. The dust suppression earthwork excavation device for construction according to claim 6, characterized in that: A connecting rod (51) is fixedly mounted on the telescopic end of the electric push rod (31) and is slidably connected to the inner wall of the linkage ring (42); a fixed push ring (52) is fixedly sleeved on the outer wall of the connecting rod (51); and a push block (53) corresponding to the cover plate (28) is fixedly mounted on one end of the connecting rod (51) away from the electric push rod (31).

9. The dust suppression earthwork excavation device for construction according to claim 1, characterized in that: The swing assembly includes a protective shell (61) fixedly mounted on the connecting end of the excavator arm (12) and the bucket (13); two sealing cylinders (62) are symmetrically fixedly mounted on the inner wall of the protective shell (61); a shaft (63) is provided between the two sealing cylinders (62); and the shaft (63) is connected to the rotating shaft through a driven wheel and a synchronous belt transmission; the inner walls of the two sealing cylinders (62) are both slidably mounted with piston plates (64) through a sliding groove and a slider, and the piston plates (64) are threadedly sleeved on the shaft (63).

10. The dust suppression earthwork excavation device for construction according to claim 9, characterized in that: A transmission gear (65) is fixedly installed at the end of the support shaft, and a driving rack (67) meshing with the transmission gear (65) is slidably installed on both sides of the excavator arm (12). Pneumatic telescopic rods (66) corresponding to the driving rack (67) are fixedly installed on both sides of the excavator arm (12). The two pneumatic telescopic rods (66) are connected to the two sealing cylinders (62) through an air pipe (68). A protective box (69) corresponding to the transmission gear (65) and the driving rack (67) is fixedly installed on the side of the excavator arm (12).

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