Dust removal and noise reduction structure for down-the-hole drill

Abstract

The dust removal and noise reduction structure comprises a drilling machine body, the drilling machine body comprises a drill bit assembly, the drill bit assembly comprises a drilling frame and a drilling rod, the bottom of the drilling frame is provided with a limiting seat used for limiting the drilling rod, and the limiting seat is provided with a semi-cylindrical limiting opening used for allowing the drilling rod to stretch in and limiting the drilling rod. A mounting column is arranged on the limiting seat below the limiting opening, a first cover body and a second cover body are rotationally arranged on the mounting column, a locking structure is arranged at the movable end of the first cover body and the movable end of the second cover body, an outer barrel is formed after the first cover body and the second cover body are locked, the outer barrel is provided with an inner bottom, and a plurality of spray heads for spraying water are arranged at the inner bottom of the outer barrel. Firstly, the two cover bodies capable of being opened and closed are arranged, the cover bodies are used for installing the drill rod after being opened and form one cover body after being closed, the cover bodies have a certain noise reduction effect, in addition, the spray nozzles capable of slidably adjusting the distance are arranged at the bottoms of the cover bodies, the water spraying density is adjusted, and therefore the spraying density is adjusted according to different soil textures; and a better effect is achieved through targeted dust removal.

Description

Technical Field

[0001] The utility model relates to a dust removal and noise reduction structure for a drill rig, in particular to a dust removal and noise reduction structure for a down-the-hole drill rig. Background Art

[0002] A drill rig is used to drive a drill tool to drill underground during exploration or mineral resource development and when driving piles, break the rock at the bottom of the hole, and lower or raise the drill tool in the hole. It can be used to drill core samples, ore samples, cuttings, gaseous samples, and liquid samples to obtain geological resources and drive piles to open holes.

[0003] The patent with application number CN201811162973.X discloses a dust-reducing down-the-hole drill rig, which includes a carriage and a slide plate slidably installed on the carriage. A slewing assembly is installed on the slide plate, and a drill pipe is installed at the output end of the slewing assembly. A guide seat is vertically installed at the lower end of the carriage. The guide seat has a guide hole coaxially arranged with the slewing assembly, and the drill pipe passes through the guide hole. A dust reduction cover with a tapered shape that is small at the top and large at the bottom is installed on the guide seat. The top of the dust reduction cover has a first through hole for the drill pipe to pass through. A spraying device is installed on the inner wall of the dust reduction cover. The spraying device is located in the upper part of the dust reduction cover and is arranged obliquely downward towards the middle of the dust reduction cover. The dust reduction cover also has a water inlet communicated with the spraying device, and the water inlet is connected to a water supply pump.

[0004] In the above patent, water is sprayed by setting a tapered cover and a spraying device inside the dust reduction cover, so that the dust reduction cover can achieve dust removal while reducing noise. However, the maximum diameter of the drill bit is often larger than the diameter of the drill pipe. Therefore, during installation, it needs to be installed from the side. The tapered cover in the above patent is an integral structure and the drill pipe cannot be installed from the side. In addition, its spraying device is fixedly arranged, and the number and spacing cannot be adjusted, resulting in a limited spraying coverage range and inability to adjust targeted. Summary of the Utility Model

[0005] Based on the deficiencies that the tapered cover in the prior art is an integral structure and the drill pipe cannot be installed from the side, and in addition, its spraying device is fixedly arranged, the number and spacing cannot be adjusted, resulting in a limited spraying coverage range and inability to adjust targeted, the utility model provides a dust removal and noise reduction structure for a down-the-hole drill rig.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] Dust removal and noise reduction structure for down-the-hole drill, including the drill rig body, the drill rig body includes a drill bit assembly, the drill bit assembly includes a drill frame and a drill pipe, a limit seat for limiting the drill pipe is provided at the bottom of the drill frame, a semi-cylindrical limit opening for the drill pipe to extend into and limit the drill pipe is provided on the limit seat, an installation column is provided on the limit seat below the limit opening, a first cover body and a second cover body are rotatably provided on the installation column, locking structures are provided at the movable ends of the first cover body and the second cover body, and an outer cylinder body is formed after the two are locked, the outer cylinder body has an inner bottom, and a plurality of spray heads for spraying water are provided at the inner bottom thereof.

[0008] Preferably, both the first cover body and the second cover body include a semi-circular ring-shaped inner top plate and a cover plate provided at the arc-shaped outer edge of the inner top plate.

[0009] Preferably, an arc-shaped slide rail is provided on the inner top plate, and a plurality of spray heads are slidably provided in the slide rail.

[0010] Preferably, the slide rail is an arc-shaped hole provided on the inner top plate, the spray head is provided with an external thread and is threadedly connected with two locking nuts, and the locking nuts are located on both sides of the inner top plate and can clamp the inner top plate to fix the spray head.

[0011] Preferably, arc-shaped plates extending vertically are provided at the arc-shaped inner edges of the two inner top plates, and an inner cylinder body is formed by enclosing the two arc-shaped plates after the first cover body and the second cover body are locked.

[0012] Preferably, the top part of the outer cylinder body is a cylindrical structure and the bottom part is a trumpet-shaped structure with an increasingly larger opening.

[0013] Preferably, two attachable mounting plates are provided at the movable ends of the first cover body and the second cover body, locking holes are provided on the mounting plates, fastening bolts are inserted into the locking holes and fixed by nuts.

[0014] Preferably, a first hinge ear with a round hole is provided on the side wall of the first cover body, two spaced second hinge ears with round holes are provided on the side wall of the second cover body, the first hinge ear is arranged at the gap between the two second hinge ears and the three hinge ears are coaxially arranged, wherein the diameter of each round hole is the same as the diameter of the installation column, and a limit head for preventing the hinge ears from falling off is provided at the bottom of the installation column.

[0015] Preferably, after the first cover body and the second cover body are installed on the installation column, a gap is left between the tops of the two and the bottom surface of the holding seat, and this gap is used for the top end of the spray head to protrude.

[0016] Preferably, a cavity is provided in the limit seat, a water inlet channel is provided on one side of the cavity, a plurality of water outlet joints are provided on the other side of the cavity, the water outlet joints are connected to the top ends of the spray heads through hoses, and the diameter of the water inlet channel is larger than the diameter of the water outlet joints.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: Firstly, by providing two openable and closable covers in this application, which are used for installing drill pipes after being opened and form a cover body after being closed. The cover body itself has a certain noise reduction effect. In addition, by providing a nozzle at the bottom of the cover body with adjustable sliding distance to adjust the water spraying density, the spraying density can be adjusted according to different soil types, and targeted dust removal can be achieved to obtain better effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 is a three-dimensional view of the whole drill rig;

[0020] Figure 2 is a three-dimensional view of the drill bit assembly;

[0021] Figure 3 is a three-dimensional view of the limit seat;

[0022] Figure 4 is a three-dimensional view (top) of the dust removal and noise reduction structure;

[0023] Figure 5 is a three-dimensional view (bottom) of the dust removal and noise reduction structure;

[0024] Figure 6 is an exploded view of the dust removal and noise reduction structure;

[0025] In the figures: 001, drill rig body; 002, drill bit assembly; 0021, limit seat; 00211, mounting post; 00212, water outlet joint; 003, dust removal and noise reduction structure; 0031, second cover; 00311, second hinge ear; 0032, first cover; 00321, first hinge ear; 0033, inner top plate; 0034, arc-shaped hole; 0035, nozzle; 0036, locking nut; 0037, inner cylinder; 00371, arc-shaped plate; 0038, outer cylinder; 0039, mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings. Those skilled in the art will understand that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present utility model.

[0027] It should be noted that similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0028] This embodiment mainly elaborates on the title of the dust removal and noise reduction structure for down-the-hole drills, specifically as follows:

[0029] The dust removal and noise reduction structure for down-the-hole drills, as Figure 1-6 shown, includes a drill rig body 001. The drill rig body 001 includes a drill bit assembly 002. The drill bit assembly 002 includes a drill rig and a drill pipe. A limit seat 0021 for limiting the drill pipe is provided at the bottom of the drill rig. A semi-cylindrical limit opening for the drill pipe to extend into and limit the drill pipe is provided on the limit seat 0021. An installation post 00211 is provided on the limit seat 0021 below the limit opening. A first cover body 0032 and a second cover body 0031 are rotatably provided on the installation post 00211. The movable ends of the first cover body 0032 and the second cover body 0031 are provided with a locking structure, and after they are locked, an outer cylinder 0038 is formed. The outer cylinder 0038 has an inner bottom, and a plurality of spray nozzles 0035 for spraying water are provided at the inner bottom thereof. By providing two openable and closable cover bodies, which are used for installing the drill pipe after being opened and form a cover body after being closed, the cover body itself has a certain noise reduction effect, and together with the spray nozzles 0035, it provides a dust removal effect, so that the drill rig has a certain dust removal and noise reduction ability.

[0030] Preferably, both the first cover body 0032 and the second cover body 0031 include a semi-circular ring-shaped inner top plate 0033 and a cover plate provided on the arc-shaped outer edge of the inner top plate 0033. The cover plate is used to cover the position where the drill bit drills the ground to prevent excessive noise and dust from leaking out.

[0031] Preferably, an arc-shaped slide rail is provided on the inner top plate 0033, and a plurality of spray nozzles 0035 are slidably provided in the slide rail. During use, the position of the spray nozzles 0035 can be slidably adjusted according to the situation.

[0032] Preferably, the slide rail is an arc-shaped hole 0034 provided on the inner top plate 0033. The spray nozzles 0035 are provided with external threads and are threadedly connected with two locking nuts 0036. The locking nuts 0036 are located on both sides of the inner top plate 0033 and can clamp the inner top plate 0033 to fix the spray nozzles 0035. After adjusting the position of the spray nozzles 0035, they are locked by the locking nuts 0036.

[0033] Preferably, arc-shaped plates 00371 extending vertically are provided at the arc-shaped inner edges of the two inner top plates 0033. After the first cover body 0032 and the second cover body 0031 are locked, the two arc-shaped plates 00371 enclose an inner cylinder 0037. The drill pipe is located inside the inner cylinder.

[0034] Preferably, the top part of the outer cylinder 0038 is a cylindrical structure, while the bottom part is a horn-shaped structure with a gradually increasing opening.

[0035] Preferably, two attachable mounting plates 0039 are provided at the movable ends of the first cover 0032 and the second cover 0031. Locking holes are provided on the mounting plates 0039, and fastening bolts are inserted through the locking holes and fixed with nuts.

[0036] Preferably, a first hinge ear 00321 with a round hole is provided on the side wall of the first cover 0032, and two spaced second hinge ears 00311 with round holes are provided on the side wall of the second cover 0031. The first hinge ear 00321 is arranged at the gap between the two second hinge ears 00311, and the three hinge ears are coaxially arranged. The diameter of each round hole is the same as the diameter of the mounting post 00211, and a limiting head for preventing the hinge ears from falling off is provided at the bottom of the mounting post 00211.

[0037] Preferably, after the first cover 0032 and the second cover 0031 are mounted on the mounting post 00211, there is a gap between their tops and the bottom surface of the holding seat, and this gap is used for the top end of the nozzle 0035 to protrude.

[0038] Preferably, a cavity is provided in the limit seat 0021. An inlet channel is provided on one side of the cavity, and a number of outlet connectors 00212 are provided on the other side of the cavity. The outlet connectors 00212 are connected to the top end of the nozzle 0035 through hoses. The diameter of the inlet channel is larger than the diameter of the outlet connectors 00212. During use, water is pumped into the cavity by a pump and then delivered to different nozzles 0035 through different outlet connectors 00212 for spraying.

[0039] The above has introduced the title provided by the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. Dust removal and noise reduction structure for down-the-hole drill, including the drill rig body, the drill rig body includes a drill bit assembly, the drill bit assembly includes a drill rig and a drill pipe, a limit seat for limiting the drill pipe is provided at the bottom of the drill rig, and a semi-cylindrical limit opening for the drill pipe to extend into and limit the drill pipe is provided on the limit seat, and it is characterized in that: An installation post is provided on the limit seat below the limit opening. The first cover body and the second cover body are rotatably arranged on the installation post. The movable ends of the first cover body and the second cover body are provided with a locking structure, and an outer cylinder body is formed after the two are locked. The outer cylinder body has an inner bottom, and a plurality of nozzles for spraying water are provided at the inner bottom thereof.

2. The dust removal and noise reduction structure for a down-the-hole drill according to claim 1, wherein: Both the first cover body and the second cover body include a semi-circular inner top plate and a cover plate arranged on the arc-shaped outer edge of the inner top plate.

3. The dust removal and noise reduction structure for a down-the-hole drill according to claim 2, wherein: An arc-shaped slide rail is provided on the inner top plate, and a plurality of nozzles are slidably arranged in the slide rail.

4. The dust removal and noise reduction structure for a down-the-hole drill according to claim 3, characterized in that: The slide rail is an arc-shaped hole arranged on the inner top plate. The nozzle is provided with an external thread and is threadedly connected with two locking nuts. The locking nuts are located on both sides of the inner top plate and can clamp the inner top plate to fix the nozzle.

5. The dust removal and noise reduction structure for a down-the-hole drill according to claim 2, characterized in that: Arc-shaped plates extending vertically are provided at the arc-shaped inner edges of the two inner top plates. After the first cover body and the second cover body are locked, the two arc-shaped plates enclose an inner cylinder body.

6. The dust removal and noise reduction structure for a down-the-hole drill according to claim 1, characterized in that: The top part of the outer cylinder body is a cylindrical structure, and the bottom part is a trumpet-shaped structure with an increasingly larger opening.

7. The dust removal and noise reduction structure for a down-the-hole drill according to claim 1, characterized in that: Two attachable mounting plates are provided at the movable ends of the first cover body and the second cover body. Locking holes are provided on the mounting plates, and fastening bolts are inserted into the locking holes and fixed by nuts.

8. The dust removal and noise reduction structure for a down-the-hole drill according to claim 1, characterized in that: A first hinge ear with a round hole is provided on the side wall of the first cover body. Two spaced second hinge ears with round holes are provided on the side wall of the second cover body. The first hinge ear is arranged in the gap between the two second hinge ears, and the three hinge ears are coaxially arranged. The diameter of each round hole is the same as the diameter of the installation post, and a limit head for preventing the hinge ears from falling off is provided at the bottom of the installation post.

9. The dust removal and noise reduction structure for a down-the-hole drill according to claim 1, characterized in that: After the first cover body and the second cover body are installed on the installation post, there is a spacing between their tops and the bottom surface of the holding seat, and this spacing is used for the top ends of the nozzles to protrude.

10. The dust removal and noise reduction structure for a down-the-hole drill according to claim 9, characterized in that: A cavity is provided in the limit seat. An inlet channel is provided on one side of the cavity, and a plurality of outlet joints are provided on the other side of the cavity. The outlet joints are connected to the top ends of the nozzles through hoses, and the diameter of the inlet channel is larger than the diameter of the outlet joints.

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