Dust falling device for side slope anchor hole construction

Abstract

The utility model discloses a dust falling device for slope anchor hole construction, which comprises a spraying part for spraying and dust falling and a mounting part for fixing the spraying part, the spraying part comprises an inner cylinder, a plurality of water outlet holes are distributed on the inner wall of the inner cylinder; the outer cylinder is sleeved outside the inner cylinder; the two end plates are arranged at the two ends of the inner cylinder and the two ends of the outer cylinder correspondingly and block the gap between the inner cylinder and the outer cylinder. The water inlet penetrates through the cylinder wall of the outer cylinder and is communicated with a gap between the outer cylinder and the inner cylinder; the mounting part comprises a plurality of bolt holes, one end plate is connected with the drill rod limiting plate through the bolt holes and connecting bolts, and the other end plate is close to a slope anchor hole opening. According to the device, the inner cylinder, the outer cylinder and the end plates form a relatively closed dust falling environment, and the water outlet holes distributed in the inner wall of the inner cylinder are used for spraying water at multiple angles, so that the sprayed water can be fully combined with dust particles in the relatively closed dust falling environment to infiltrate the dust particles, and the purpose of fully falling dust is achieved.

Description

Technical Field

[0001] This utility model relates to the field of anchor drilling construction devices, specifically to a dust suppression device for slope anchor hole construction. Background Technology

[0002] In water conservancy and hydropower projects, slope protection typically employs methods such as anchor bolts, anchor cables, and shotcrete. Especially during anchor hole drilling, the drill rods of the anchoring drilling rig generate significant amounts of dust, causing widespread dust pollution. This negatively impacts the health of workers on the work surface and also significantly affects the air quality in the construction area.

[0003] In existing technologies, dust suppression is generally achieved through external spraying, such as using spray trucks. However, the construction site environment for slope anchor holes is complex and does not have the conditions for long-term parking of spray trucks. In addition, other spraying methods, such as manual spraying with handheld spray pipes, are usually sprayed above the borehole. Therefore, the dust suppression spraying environment is an open environment, resulting in poor dust suppression. A large amount of dust still cannot combine with water droplets to achieve the effect of dust suppression, causing the dust to be directly blown into the surrounding environment by the airflow generated during drilling.

[0004] To address this issue, a dust suppression device for slope anchor hole construction is proposed. Utility Model Content

[0005] This utility model provides a dust suppression device for slope anchor hole construction, which solves the problem that the spraying environment in the existing spraying method is an open environment, resulting in dust dispersion, poor dust suppression effect, and a large amount of dust that cannot combine with water droplets is directly blown into the surrounding environment by the airflow.

[0006] This utility model specifically refers to a dust suppression device for slope anchor hole construction. The slope anchor holes are drilled by an anchoring drill rig, which includes a drill body and a drill base. A drill rod limiting plate is provided at the front end of the drill base. The drill rod of the drill body passes through the positioning hole on the drill rod limiting plate to perform drilling operations. The device includes a spraying section for dust suppression and an installation section for fixing the spraying section. The spraying section includes:

[0007] The inner cylinder has several water outlet holes arranged on its inner wall;

[0008] The outer cylinder is fitted over the inner cylinder;

[0009] Two end plates are provided, one at each end of the inner cylinder and the other at the outer cylinder, and they seal the gap between the inner cylinder and the outer cylinder. The middle of the end plate is provided with a first directional hole for the drill rod to pass through. The diameter of the end plate is larger than the outer diameter of the outer cylinder.

[0010] The water inlet penetrates the outer cylinder wall from the outside of the outer cylinder and communicates with the gap between the outer cylinder and the inner cylinder.

[0011] The mounting section includes several bolt holes, which are evenly distributed in the annular area of ​​the end plate extending beyond the outer cylinder. One end plate is connected to the drill rod limiting plate through the bolt holes and connecting bolts, and the other end plate is close to the opening of the slope anchor hole.

[0012] Specifically, the water outlet holes are arranged in a 3*3 pattern to form several drainage hole groups, which are evenly distributed on the inner wall of the inner cylinder.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects: The device of this utility model installs one end of the spraying part on the drill rod limiting plate and the other end close to the anchor hole opening of the slope through the installation part, so that the inside of the inner cylinder and the slope at the anchor hole form a relatively closed environment, reducing the dispersion of dust; after water is introduced into the gap between the inner cylinder and the outer cylinder through the water inlet, water is sprayed at multiple angles through the water outlets distributed on the inner wall of the inner cylinder, so that the sprayed water can fully combine with and wet the dust particles in the relatively closed dust-reducing environment, thereby achieving the purpose of sufficient dust reduction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the device in use.

[0015] Figure 2 This is a partial cross-sectional view of the device of this utility model.

[0016] The labels in the diagram are as follows: Slope anchor hole—1; Drill rig body—2; Drill rig base—3; Drill rod limiting plate—4; Inner cylinder—501; Outer cylinder—502; Water outlet—503; End plate—504; First directional hole—505; Water inlet—506; Connecting bolt—507. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0018] like Figure 1 and Figure 2 As shown, a dust suppression device for slope anchor hole 1 construction is disclosed. The slope anchor hole 1 is drilled by an anchoring drill rig, which includes a drill body 2 and a drill base 3. A drill rod limiting plate 4 is provided at the front end of the drill base 3. The drill rod of the drill body 2 passes through the positioning hole on the drill rod limiting plate 4 to perform drilling operations. The device includes a spraying section for dust suppression and an installation section for fixing the spraying section. The spraying section includes:

[0019] The inner cylinder 501 has several water outlet holes 503 arranged on its inner wall;

[0020] The outer cylinder 502 is fitted over the inner cylinder 501;

[0021] Two end plates 504 are provided, which are respectively set at both ends of the inner cylinder 501 and the outer cylinder 502, and seal the gap between the inner cylinder 501 and the outer cylinder 502; the middle of the end plate 504 is provided with a first directional hole 505 for the drill rod to pass through, and the diameter of the end plate 504 is larger than the outer diameter of the outer cylinder 502.

[0022] The inlet 506 penetrates the outer cylinder 502 from the outside of the outer cylinder 502 and communicates with the gap between the outer cylinder 502 and the inner cylinder 501.

[0023] The mounting part includes a number of bolt holes, which are evenly distributed in the annular area of ​​the end plate 504 extending beyond the outer cylinder 502. One end plate 504 is connected to the drill rod limiting plate 4 through the bolt holes and connecting bolts 507, and the other end plate 504 is close to the opening of the slope anchor hole 1.

[0024] In this utility model, the spray section, as the main spraying part, includes an inner cylinder 501, an outer cylinder 502, and an end plate 504, as well as a central space formed by the three. The central space serves as a water passage layer. Water with a certain water pressure is introduced into the water passage layer through the water inlet 506. After the water flows into the water passage layer, it is sprayed out from the water outlet 503 provided on the inner wall of the inner cylinder 501 toward the drill rod, thereby achieving the purpose of spraying and dust suppression. In this process, since the entire spray unit is installed at the opening of the slope anchor hole 1 by the bolt holes and connecting bolts in the annular area of ​​the end plate 504 extending beyond the edge of the outer cylinder 502, the inner cylinder of the spray unit and the slope around the anchor hole opening together form a relatively closed hollow cylindrical environment. The dust generated during the drilling of the slope anchor hole 1 is directly wetted by the water flow sprayed from the water outlet 503 after entering the inner cylinder 501, thus replacing the problem of the spray environment being an open environment in the prior art, which caused some dust to be directly dispersed without being wetted, effectively improving the dust suppression effect. It should be noted that in order to reduce the premature dissipation of dust, the spray unit needs to be placed as close as possible to the opening of the anchor hole 1 on the slope. Therefore, the installation position of the anchoring drill needs to be adjusted according to the actual situation of the construction site, so that after the spray unit is installed, the gap between the spray unit and the opening is minimized by the drill rod limiting plate 4 on the drill base 3 of the anchoring drill, thus preventing the premature dissipation of dust. At the same time, since the spray water entering between the outer cylinder 502 and the inner cylinder 501 through the water inlet 506 usually has a certain water pressure, a large amount of atomization will occur when hitting the drill rod. Therefore, even if there is still a small gap between the spray unit and the slope at the opening of the anchor hole, the atomized and splashed droplets can still play a role in dust suppression.

[0025] In a preferred embodiment, the water outlet 503 is divided into several drainage hole groups in a 3*3 arrangement, and the drainage hole groups are evenly distributed on the inner wall of the inner cylinder 501.

[0026] In this embodiment, a method for arranging the water outlet 503 is provided, specifically, as follows: Figure 1 As shown, the water outlet holes are arranged in a 3*3 pattern to form several drainage hole groups. These drainage hole groups are evenly distributed on the inner wall of the inner cylinder. This allows the water flow from multiple drainage hole groups to intersect each other when it is sprayed out through the water outlet holes 503 of the drainage hole groups. This increases the coverage area of ​​the spray water flow and reduces the spray gaps. At the same time, the water flow from multiple drainage hole groups can also collide with each other, thereby forming a vigorous water mist and further improving the dust suppression effect of the spray.

[0027] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0028] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dust suppression device for slope anchor hole construction, wherein the slope anchor hole (1) is drilled by an anchoring drill, the anchoring drill includes a drill body (2) and a drill base (3), a drill rod limiting plate (4) is provided at the front end of the drill base (3), and the drill rod of the drill body (2) passes through the positioning hole on the drill rod limiting plate (4) for drilling operation, characterized in that, It includes a spray unit for dust suppression and a mounting unit for fixing the spray unit, the spray unit comprising: The inner cylinder (501) has several water outlet holes (503) arranged on its inner wall. The outer cylinder (502) is fitted over the inner cylinder (501); Two end plates (504) are provided, which are respectively set at both ends of the inner cylinder (501) and the outer cylinder (502) and seal the gap between the inner cylinder (501) and the outer cylinder (502); the middle part of the end plate (504) is provided with a first directional hole (505) for the drill rod to pass through, and the diameter of the end plate (504) is larger than the outer diameter of the outer cylinder (502); The inlet (506) penetrates the outer cylinder (502) wall from the outside of the outer cylinder (502) and communicates with the gap between the outer cylinder (502) and the inner cylinder (501); The mounting part includes several bolt holes, which are evenly opened in the annular area of ​​the end plate (504) extending beyond the outer cylinder (502). One end plate (504) is connected to the drill rod limiting plate (4) through the bolt holes and connecting bolts (507), and the other end plate (504) is close to the opening of the slope anchor hole (1).

2. The dust suppression device for slope anchor hole construction as described in claim 1, characterized in that, The water outlet (503) is divided into several drainage hole groups in a 3*3 arrangement, and the drainage hole groups are evenly distributed on the inner wall of the inner cylinder (501).

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