A drilling device for underground boulder blasting

Abstract

This utility model relates to a drilling device for blasting isolated boulders underground, comprising a drill rod and a drill bit. The drill rod is mounted on a support base, and a mud scraper is located below the support base. The drill rod passes through the mud scraper. A cooling section, including water spray pipes, is located below the support base. Multiple water spray pipes are located below the support base and have anti-clogging structures. A cleaning structure is located above the support base. The drill rod drives the drill bit to drill into the underground boulder. When the drill rod is pulled upwards with attached mud, the mud scraper removes the mud, reducing its adhesion. The water spray from the water spray pipes sprays water onto the drill rod and drill bit, which not only removes some of the mud below the drill rod but also cools the drill bit. The anti-clogging structure on the water spray pipes prevents the mud scraper from clogging the water spray pipes during the mud scraping process. The cleaning structure on the support base further cleans the mud on the drill rod.

Description

Technical Field

[0001] This utility model relates to the field of rock drilling technology, and in particular to a drilling device for blasting underground boulders. Background Technology

[0002] Drilling and blasting refers to the method of excavating rock by drilling, charging explosives, and blasting. Drilling and blasting has always been the main construction method for rock excavation of underground structures. This method is highly adaptable to geological conditions and has low excavation costs, making it particularly suitable for the construction of caverns in hard rock. The main tasks of drilling and blasting design are to determine the layout of blast holes in the excavation section, including the location, depth, and direction of various types of blast holes; to determine the charge quantity, charge structure, and plugging method for various types of blast holes; and to determine the detonation method and detonation sequence for various types of blast holes.

[0003] Drill rods easily carry sludge during drilling, and if the sludge is not treated for a long time, it can accumulate. For example, Chinese patent CN217269977 U discloses a drilling device for blasting isolated rocks in bedrock. This device uses a sludge cleaning mechanism on the side of the drill rod to flush away the sludge and accumulated sludge on the drill rod. It also automatically injects water to cool the drill bit, extending the life of the drill bit and preventing sludge accumulation on the drill rod. However, the high-pressure nozzle of this device is located below the scraper. The scraped sludge falls onto the high-pressure nozzle, which can cause blockage when the high-pressure nozzle is not working, resulting in poor water spray and affecting the cleaning effect.

[0004] Therefore, in order to address the above problems, a drilling device for blasting underground boulders is proposed to solve these problems. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a drilling device for blasting underground boulders. This invention can drill holes in underground boulders and simultaneously clean the mud from the drill rod.

[0006] The technical solution of this utility model to solve the technical problem is as follows: a drilling device for blasting underground boulders, including a drill rod and a drill bit. The drill rod is set on a support base, and a mud scraping platform is set below the support base. The drill rod passes through the mud scraping platform. A cooling part is set below the support base. The cooling part includes a water spray pipe. Multiple water spray pipes are set below the support base. An anti-clogging structure is set on the water spray pipes. A cleaning structure is set above the support base.

[0007] The drill rod drives the drill bit to drill into the underground boulder, facilitating the subsequent blasting of the boulder with explosives. As the drill rod is pulled upwards with mud attached, the mud scraper removes the mud, reducing its adhesion. Water jets from the water spray pipe spray water onto the drill rod and drill bit, removing some of the mud below the drill rod and cooling the drill bit to prevent overheating. The water spray pipe is also equipped with an anti-clogging structure to prevent the mud scraper from clogging the pipe during the mud scraping process. The cleaning structure on the support base further cleans the mud off the drill rod.

[0008] Preferably, the cooling section also includes a water spray trough and a connector. The water spray trough is provided on the side of the water spray pipe, facing the drill rod. The connector is provided on the water spray trough and is located above the support base. The connector is connected to the first water inlet pipe, which is connected to the water distributor. The water distributor is connected to the main pipe, which is equipped with a valve and connected to the water inlet system.

[0009] The water inlet system delivers water to the first inlet pipe through the main pipe and distributor. The water flow is then delivered to the spray pipe through the first inlet pipe and connector. The spray trough on the spray pipe sprays the water out, and the sprayed water flows towards the drill rod, which cleans the lower part of the drill rod and cools the drill bit.

[0010] As a preferred embodiment, the anti-clogging structure includes a baffle and a chute. The baffle is arc-shaped and slides on the outside of the water spray pipe. A connecting plate is provided on the baffle and slides in the chute. The chute is set on a support base and is arc-shaped, and is coaxial with the water spray pipe.

[0011] When the drill rod is pulled upwards, rotate the baffle to block the water spray trough and prevent sludge from entering the water spray pipe. When the drill rod stops being pulled upwards, rotate the baffle to open the water spray trough and spray water.

[0012] Preferably, the anti-clogging structure includes a positioning plate, a positioning plate is provided on the connecting plate, the positioning plate is set on the support base, the positioning plate is provided with positioning holes, the positioning holes are provided with adjusting bolts, the support base is provided with multiple first limiting holes and multiple second limiting holes, and the adjusting bolts change the baffle angle by cooperating with the first limiting holes and the second limiting holes.

[0013] The positioning plate is located above the support plate, making it convenient for operators to rotate the positioning plate, which in turn drives the baffle to rotate. The positioning plate is positioned by adjusting the bolts and the first and second limit holes to prevent the positioning plate and the baffle from being tilted under force.

[0014] Preferably, the cleaning structure includes mounting plates and nozzles. Multiple mounting plates are vertically arranged on the support frame and are arranged around the drill rod. Multiple nozzles are arranged on the side of the mounting plate facing the drill rod. The multiple nozzles are connected to a second water inlet pipe, which is connected to the water inlet system.

[0015] The water inlet system delivers water to the second inlet pipe, and the water is sprayed out through multiple nozzles to spray the sludge on the surface of the drill rod. The mounting plate is set around the drill rod to clean multiple angles of the drill rod and improve the cleaning effect.

[0016] Preferably, the cleaning structure also includes a support frame, with multiple support frames mounted on a support base. A limiting plate is installed on the support frame, located above the connector, and an installation plate is vertically mounted on the limiting plate.

[0017] The limiting plate is positioned above the connector via a support frame, without affecting the connection between the connector and the first water inlet pipe.

[0018] Preferably, the scraper platform is frustum-shaped, with the end of the scraper platform with a smaller diameter facing downwards, and the end of the scraper platform with a larger diameter connected to the support base.

[0019] When the mud scraper removes mud from the drill rod surface, the mud moves upward along the outer wall of the scraper, reducing the accumulation of mud at the lower end of the scraper and improving the scraping effect.

[0020] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0021] The drill rod drives the drill bit to drill into the underground boulder, facilitating the subsequent blasting of the boulder with explosives. As the drill rod is pulled upwards with mud attached, the mud scraper removes the mud, reducing its adhesion. The water jet from the water spray pipe sprays water onto the drill rod and drill bit, which not only removes some of the mud below the drill rod but also cools the drill bit to prevent overheating. At the same time, the water spray pipe is equipped with an anti-clogging structure to prevent the mud scraper from clogging the water spray pipe during the mud scraping process. The cleaning structure on the support base further cleans the mud on the drill rod.

[0022] When the drill rod is pulled upwards, rotate the baffle to block the water spray trough, preventing sludge from entering the water spray pipe. When the drill rod stops being pulled upwards, rotate the baffle to open the water spray trough and spray water. The positioning plate is located above the support plate, making it easy for the operator to rotate the positioning plate, which in turn drives the baffle to rotate. The positioning plate is positioned by adjusting the bolts and the first and second limit holes to prevent the positioning plate and the baffle from being tilted due to force. Attached Figure Description

[0023] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0026] Figure 3 This is a bottom view of the support base of this utility model.

[0027] Figure 4 This is a schematic diagram of the baffle structure of this utility model.

[0028] Figure 5 Appendix to this utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0029] In the diagram, 1. Drill rod; 2. Drill bit; 3. Support base; 4. Scraper platform; 5. Water spray pipe; 6. Water spray trough; 7. Connector; 8. First water inlet pipe; 9. Water distributor; 10. Main pipe; 11. Valve; 12. Baffle; 13. Slide groove; 14. Limiting plate; 15. Connecting plate; 16. Positioning plate; 17. Positioning hole; 18. Adjusting bolt; 19. First limiting hole; 20. Second limiting hole; 21. Mounting plate; 22. Nozzle; 23. Second water inlet pipe; 24. Support frame. Detailed Implementation

[0030] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figures 1 to 5 As shown, a drilling device for blasting underground boulders includes a drill rod 1 and a drill bit 2. The drill rod 1 is mounted on a support base 3. A mud scraper 4 is mounted below the support base 3. The drill rod 1 passes through the mud scraper 4. A cooling section is mounted below the support base 3. The cooling section includes a water spray pipe 5. Multiple water spray pipes 5 are mounted below the support base 3. An anti-clogging structure is mounted on the water spray pipes 5. A cleaning structure is mounted above the support base 3. Drill rod 1 drives drill bit 2 to drill into the underground boulder, facilitating the subsequent blasting of explosives inside the boulder. When drill rod 1 is pulled upwards with sludge attached, scraper platform 4 scrapes off the sludge to reduce its adhesion. Water jet from water spray pipe 5 sprays water onto drill rod 1 and drill bit 2, which can remove some of the sludge below drill rod 1 and cool drill bit 2 to prevent it from overheating. At the same time, anti-clogging structure is set on water spray pipe 5 to prevent sludge from clogging water spray pipe 5 during the scraping process. The cleaning structure set on support base 3 further cleans the sludge on drill rod 1.

[0032] The cooling section also includes a water spray trough 6 and a connector 7. The water spray trough 6 is located on the side of the water spray pipe 5, facing the drill rod 1. The connector 7 is located on the water spray trough 6, above the support base 3, and is connected to the first water inlet pipe 8. The first water inlet pipe 8 is connected to a water distributor 9, which is connected to a main pipe 10. A valve 11 is installed on the main pipe 10, which is connected to the water inlet system. The water inlet system delivers water to the first water inlet pipe 8 through the main pipe 10 and the water distributor 9. Water is then delivered to the water spray pipe 5 through the first water inlet pipe 8 and the connector 7. The water spray trough 6 on the water spray pipe 5 sprays the water out, directing the water flow towards the drill rod 1, thus cleaning the lower part of the drill rod 1 and cooling the drill bit 2.

[0033] The anti-clogging structure includes a baffle 12 and a chute 13. The baffle 12 is arc-shaped and slides on the outside of the water spray pipe 5. A connecting plate 15 is installed on the baffle 12 and slides in the chute 13. The chute 13 is mounted on the support base 3 and is arc-shaped, coaxial with the water spray pipe 5. When the drill rod 1 is pulled upward, the baffle 12 is rotated to block the water spray chute 6, preventing sludge from entering the water spray pipe 5. When the drill rod 1 stops being pulled upward, the baffle 12 is rotated to open the water spray chute 6 for water spraying.

[0034] The anti-clogging structure includes a positioning plate 16, which is mounted on a connecting plate 15 and placed on a support base 3. The positioning plate 16 has positioning holes 17, and adjusting bolts 18 are installed in the positioning holes 17. The support base 3 has multiple first limiting holes 19 and multiple second limiting holes 20. The adjusting bolts 18 change the angle of the baffle 12 by cooperating with the first limiting holes 19 and the second limiting holes 20. The positioning plate 16 is located above the support plate, allowing the operator to rotate it, which in turn rotates the baffle 12. The positioning plate 16 is positioned by the adjusting bolts 18 and the first and second limiting holes 19 and 20, preventing the positioning plate 16 and the baffle 12 from being misaligned under force.

[0035] The cleaning structure includes mounting plates 21 and nozzles 22. Multiple mounting plates 21 are vertically mounted on a support frame 24, surrounding the drill rod 1. Multiple nozzles 22 are positioned on the side of the mounting plates 21 facing the drill rod 1, and these nozzles are connected to a second water inlet pipe 23, which is connected to a water inlet system. The water inlet system supplies water to the second water inlet pipe 23, and the water is sprayed through the multiple nozzles 22 to spray the sludge off the surface of the drill rod 1. The mounting plates 21, positioned around the drill rod 1, clean multiple angles of the drill rod 1, improving the cleaning effect.

[0036] The cleaning structure also includes support frames 24, with multiple support frames 24 mounted on support base 3. Limiting plates 14 are mounted on the support frames 24, located above the connector 7. A mounting plate 21 is vertically mounted on the limiting plates 14. The limiting plates 14, positioned above the connector 7 via the support frames 24, do not interfere with the connection between the connector 7 and the first water inlet pipe 8.

[0037] The scraper platform 4 is frustum-shaped, with the smaller diameter end facing downwards and the larger diameter end connected to the support base 3. When scraping the mud off the surface of the drill rod 1, the mud moves upwards along the outer wall of the scraper platform 4, reducing the accumulation of mud at the lower end of the scraper platform 4 and improving the scraping effect.

[0038] Working principle: Drill rod 1 and drill bit 2 drill holes in underground boulders to facilitate the subsequent placement of explosives inside the boulders. When drill rod 1 is pulled upwards, the mud scraper 4 scrapes off the mud attached to drill rod 1. At the same time, the nozzle 22 above the support base 3 sprays water to clean the surface of drill rod 1. When drill rod 1 stops lifting, the baffle 12 is rotated to open the water spray channel 6. The water spray channel 6 sprays water to clean the mud on the lower part of drill rod 1 and also cools the drill bit 2.

[0039] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A drilling device for blasting underground boulders, comprising a drill rod (1) and a drill bit (2), wherein the drill rod (1) is mounted on a support base (3), characterized in that: A mud scraper (4) is provided below the support base (3), and the drill rod (1) passes through the mud scraper (4). A cooling section is provided below the support base (3), and the cooling section includes a water spray pipe (5). Multiple water spray pipes (5) are provided below the support base (3). An anti-clogging structure is provided on the water spray pipe (5). A cleaning structure is provided above the support base (3).

2. The drilling device for blasting underground boulders according to claim 1, characterized in that: The cooling section also includes a water spray trough (6) and a connector (7). The water spray trough (6) is provided on the side of the water spray pipe (5). The water spray trough (6) faces the drill rod (1). The connector (7) is provided on the water spray trough (6). The connector (7) is located above the support base (3). The connector (7) is connected to the first water inlet pipe (8). The first water inlet pipe (8) is connected to the water distributor (9). The water distributor (9) is connected to the main pipe (10). The main pipe (10) is provided with a valve (11). The main pipe (10) is connected to the water inlet system.

3. The drilling device for blasting underground boulders according to claim 1, characterized in that: The anti-clogging structure includes a baffle (12) and a slide groove (13). The baffle (12) is arc-shaped and slides on the outside of the water spray pipe (5). A connecting plate (15) is provided on the baffle (12) and slides in the slide groove (13). The slide groove (13) is provided on the support base (3) and is arc-shaped. The slide groove (13) is coaxial with the water spray pipe (5).

4. A drilling device for blasting underground boulders according to claim 3, characterized in that: The anti-blocking structure includes a positioning plate (16), which is provided on the connecting plate (15). The positioning plate (16) is provided on the support base (3). The positioning plate (16) is provided with a positioning hole (17). The positioning hole (17) is provided with an adjusting bolt (18). The support base (3) is provided with a plurality of first limiting holes (19) and a plurality of second limiting holes (20). The adjusting bolt (18) changes the angle of the baffle (12) by cooperating with the first limiting hole (19) and the second limiting hole (20).

5. A drilling device for blasting underground boulders according to claim 1, characterized in that: The cleaning structure includes a mounting plate (21) and nozzles (22). Multiple mounting plates (21) are vertically arranged on the support frame (24). The multiple mounting plates (21) are arranged around the drill rod (1). Multiple nozzles (22) are arranged on the side of the mounting plate (21) facing the drill rod (1). The multiple nozzles (22) are connected to the second water inlet pipe (23). The second water inlet pipe (23) is connected to the water inlet system.

6. A drilling device for blasting underground boulders according to claim 5, characterized in that: The cleaning structure also includes a support frame (24), a plurality of the support frames (24) are arranged on the support base (3), a limiting plate (14) is provided on the support frame (24), the limiting plate (14) is located above the connector (7), and an installation plate (21) is vertically arranged on the limiting plate (14).

7. A drilling device for blasting underground boulders according to claim 1, characterized in that: The scraper platform (4) is frustum-shaped, with the smaller diameter end of the scraper platform (4) facing downwards, and the larger diameter end of the scraper platform (4) connected to the support base (3).

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