Ground drilling equipment for grouting and filling area of coal mine

Abstract

The invention relates to the field of drilling equipment, and discloses coal mine grouting filling area ground drilling equipment which comprises a main frame, a drill rod mounting block is fixedly mounted on the main frame, a drilling machine is slidably mounted on the drill rod mounting block, a grouting piece is fixedly mounted on the drilling machine, and a grouting pipe is fixedly connected to the side of the grouting piece. A drill rod is arranged in the drilling machine, and a stabilizing device is arranged at the bottom of a drill rod mounting block. According to the stabilizing device, the stability of the drilling machine and the drilling rod during drilling is improved through the centering part in the stabilizing device, so that the outer part of the drilling rod is clamped, the problem of drilling hole inclination generated during preliminary drilling of the drilling rod is solved, and through the design of the centering part, when the drilling rod drills into a crossed rock stratum, the effect of early warning in advance can be achieved.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and more specifically, to a surface drilling device for grouting and filling areas in coal mines. Background Technology

[0002] A coal mine grouting and filling zone refers to an area where grout (such as fly ash grout, gangue paste, etc.) is injected into the underground goaf or separated space to solidify and support the overlying strata, reduce surface subsidence, and safely dispose of solid waste. To ensure efficient grouting, vertical boreholes are often drilled from the surface directly to the target filling layer; these boreholes are called surface boreholes in the coal mine grouting and filling zone. As a crucial channel connecting the surface and the underground filling zone, it enables large-scale, precise delivery of the grout, and is a vital engineering component ensuring filling effectiveness and surface safety. A patent application with publication number CN118622170B discloses a surface drilling device for grouting and filling areas in coal mines. The device includes a main frame, a posture adjustment mechanism, a drilling control mechanism, and an auxiliary grouting mechanism. The posture adjustment mechanism and the drilling control mechanism are located on the side wall of the main frame, and the auxiliary grouting mechanism is mounted on the drilling control mechanism. This significantly improves the stability, accuracy, and efficiency of drilling operations. The fixed support mechanism ensures the equipment remains stable even when drilling at an angle, avoiding the tendency to tilt that is common with traditional equipment. The adaptive angle adjustment mechanism allows for omnidirectional adjustment of the drilling frame in both horizontal and vertical directions, meeting the drilling needs under complex geological conditions. The drilling control mechanism, combined with monitoring technology, precisely controls the drilling process, effectively preventing drilling that is too deep or too shallow. The auxiliary grouting mechanism ensures the safety and efficiency of grouting operations through precise pressure and flow control. During the use of the above-mentioned device, although the main frame can be fixed and adjusted, when the drilling device is initially drilling or when the rock strata change, the drill bit may not be able to adapt quickly to the rock strata due to the tilt of the rock strata, resulting in the overall lifting of the drilling equipment. Tilting and errors may occur during drilling. After drilling, when grouting, a lot of grout is wasted, and problems such as grouting tilt and unqualified grouting occur. Summary of the Invention

[0003] This invention provides a ground drilling device for grouting and filling areas in coal mines, which solves the problem in related technologies that when drilling devices are initially drilling or when there are changes in rock strata, the drill bit may not be able to quickly adapt to the changes in rock strata due to rock tilt, resulting in the overall lifting of the drilling device. Tilting and errors may occur during drilling, and after drilling, a lot of grout is wasted during grouting, resulting in grouting tilt and unqualified grouting.

[0004] This invention provides a ground drilling device for grouting and filling areas in coal mines, including a main frame, a drill rod mounting block fixedly installed on the main frame, a drilling rig slidably installed on the drill rod mounting block, a grouting component fixedly installed on the drilling rig, a grouting pipe fixedly connected to the side of the grouting component, a drill rod inside the drilling rig, and a stabilizing device at the bottom of the drill rod mounting block for centering the drill rod. The stabilizing device includes a first stabilizing ring, an adjusting member, a centering member, and an adapting member. The bottom of the drill rod mounting block is provided with a first stabilizing ring. A circular array of adjusting members is fixedly installed on the outside of the first stabilizing ring. A centering member is provided on the adjusting member. An adapting member is fixedly installed on the side of the first stabilizing ring near the main frame. The drilling rig descends and presses the centering member to center the drill rod. The adapting member is used to improve the stability of the adjusting member.

[0005] As a further optimization of the present invention, a hydraulic slide rod is slidably installed in the inner circumferential array of the drill rod mounting block. The top of the hydraulic slide rod is fixedly installed with the drilling rig, and the bottom of the hydraulic slide rod is in contact with the centering member.

[0006] As a further optimization of the present invention, a connecting pipe is fixedly installed at the bottom of the grouting component, and the bottom of the connecting pipe is connected to the top of the drilling rig.

[0007] As a further optimization of the present invention, the adjusting member includes a first adjusting block fixedly installed in a circumferential array outside the first stabilizing ring, a first slider slidably installed inside the first adjusting block, and a first adjusting rod fixedly installed at the end of the first slider.

[0008] As a further optimization of the present invention, the adjusting member includes a second adjusting rod that is slidably installed inside the first adjusting rod, and an adjusting support block is fixedly installed at the bottom of the second adjusting rod.

[0009] As a further optimization of the present invention, the adjusting member includes an adjusting fixing ring fixedly installed outside the first adjusting rod, the adjusting fixing ring having a second adjusting groove inside, a third adjusting rod being slidably installed inside the second adjusting groove, and a centering member being provided at the end of the third adjusting rod.

[0010] As a further optimization of the present invention, the centering component includes a first centering rod fixedly installed on the central axis of the width of the third adjusting rod. A centering pressing rod is rotatably installed on one side of the first centering rod, and a centering following tube is rotatably installed on the other side of the first centering rod. A centering slide rod is slidably installed at the bottom of the centering following tube. A pressing semicircular block is fixedly installed at the end of the centering slide rod. A contact ball is movably installed inside the pressing semicircular block. A first spring is fixedly installed at the top of the pressing semicircular block, and the top of the first spring is fixedly connected to the centering following tube.

[0011] As a further optimization of the present invention, the adapting component includes a first adapting rod fixedly installed outside the first stabilizing ring, an adapting limiting block fixedly installed at the bottom of the drill pipe mounting block, an adapting limiting rod fixedly installed on the side of the adapting limiting block, an adapting frame fixedly installed at the bottom of the adapting limiting block, the adapting frame engaging with the first adapting rod, the adapting limiting rod being inserted into the interior of the first adapting rod, a second adapting rod slidably installed inside the first adapting rod, the adapting limiting rod being used to limit the second adapting rod, a first adapting U-shaped block fixedly installed at the end of the second adapting rod, a second adapting U-shaped block rotatably installed inside the first adapting U-shaped block, a third adapting rod fixedly installed on the side of the second adapting U-shaped block, and the side of the third adapting rod being fixedly connected to the main frame.

[0012] As a further optimization of the present invention, a torsion spring is provided between the centering extrusion rod and the centering follower tube.

[0013] As a further optimization of the present invention, the adaptation frame is provided with a plurality of adaptation adjustment grooves, and the distance between the upper and lower parts of the adaptation frame increases sequentially.

[0014] The beneficial effects of this invention are as follows: The ground drilling equipment for grouting and filling areas in coal mines described in this invention improves the stability of the drilling rig and drill rod during drilling by using a centering component inside the stabilizing device. Therefore, the drill rod is clamped externally, reducing the problem of drilling tilt during the initial drilling. The design of the centering component can provide early warning when the drill rod reaches intersecting rock strata. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall shape of the device of the present invention; Figure 2 This is a schematic diagram of the overall device installation of the present invention; Figure 3 This is a schematic diagram of the internal structure of the overall device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the adjusting component of the present invention; Figure 5 This is a schematic diagram of the internal structure of the centering component of the present invention; Figure 6 This is a schematic diagram showing the connection between the adjusting member and the centering member of the present invention; Figure 7 This is a schematic diagram of the internal structure of the adaptor of the present invention.

[0016] In the picture: 1. Main frame; 11. Drill rod mounting block; 12. Drilling rig; 13. Grouting components; 131. Connecting pipe; 14. Grouting pipe; 15. Drill rod; 151. Hydraulic slide bar; 2. Stabilizing device; 21. First stabilizing ring; 22. Adjusting component; 221. First adjusting block; 222. First slider; 223. First adjusting rod; 224. Second adjusting rod; 225. Adjusting support block; 226. Adjusting fixing ring; 227. Second adjusting groove; 228. Third adjusting rod; 23. Centering component; 231. First centering rod; 232. Centering extrusion rod; 233. Centering follower tube; 234. Centering slide rod; 235. First spring; 236. Extrusion semicircular block; 237. Contact ball; 24. Adapting component; 241. First adapting rod; 242. Adapting frame; 243. Adapting limiting rod; 244. Adapting limiting block; 245. Adapting adjusting groove; 246. Second adapting rod; 247. First adapting U-shaped block; 248. Second adapting U-shaped block; 249. Third adapting rod. Detailed Implementation

[0017] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0018] like Figures 1 to 3 As shown in the embodiment of the present invention, a ground drilling device for grouting and filling areas in coal mines includes a main frame 1, on which a drill rod mounting block 11 is fixedly installed. A drilling rig 12 is slidably installed on the drill rod mounting block 11, and a grouting component 13 is fixedly installed on the drilling rig 12. A grouting pipe 14 is fixedly connected to the side of the grouting component 13. A drill rod 15 is provided inside the drilling rig 12. A stabilizing device 2 is provided at the bottom of the drill rod mounting block 11. The stabilizing device 2 is used to center the drill rod 15. The stabilizing device 2 includes a first stabilizing ring 21, an adjusting member 22, a centering member 23, and an adapting member 24. The bottom of the drill rod mounting block 11 is provided with the first stabilizing ring 21. A circular array of adjusting members 22 is fixedly installed on the outside of the first stabilizing ring 21. The centering member 23 is provided on the adjusting member 22. The adapting member 24 is fixedly installed on the side of the first stabilizing ring 21 near the main frame 1. The drilling rig 12 descends and presses the centering member 23 to center the drill rod 15. The adapting member 24 is used to improve the stability of the adjusting member 22.

[0019] It should be noted that when the drill rig 12 first contacts the ground, it is prone to tilting due to the interaction force between the ground and the drill rod 15. Therefore, a stabilizing device 2 is installed on the side of the drill rod mounting block 11. When the drill rig 12 starts and drives the drill rod 15 to rotate, and the drill rig 12 descends under the action of the hydraulic cylinder, multiple adjusting components 22 can be adjusted to ensure that the stabilizing device 2, the drill rig 12, and the main frame 1 can stand stably on the ground, reducing vibration. The main frame 1 is equipped with an intelligent monitoring module and a control module. The control module can adjust the speed of the drill rig during drilling to adapt to drilling in different soil types and rock layers. The intelligent monitoring module can detect and provide data feedback on the vibration and temperature on the main frame 1, thereby providing real-time feedback on the stable operation of the machine during drilling, thus improving the stability of the machine's operation. After drilling, the bottom of the drill rig 12 presses against the centering component 23. The centering component 23 squeezes and centers the drill rod 15, ensuring that the drill rod 15 remains centered with the drilling rig 12 during drilling, reducing the risk of tilting during operation. However, when the drill rod 15 contacts the rock strata and is at the transition surface, its rotational speed is no longer suitable for the drilling speed of the bottom rock strata. This could cause the drill rod 15 to lift the drill rod mounting block 11 as the drilling rig 12 descends. Therefore, an adaptor 24 is provided on the side of the main frame 1. When the drill rod mounting block 11 tends to rise, the adaptor 24 can close the grouting component 13 and the drilling rig 12, ensuring that the first stabilizing ring 21 and the adjusting component 22 remain perpendicular to the drill rod 15. This reduces the risk of drilling failures due to bending or tilting of the drill rod 15, improving drilling efficiency until drilling is complete. Afterward, the grouting pipe 14 is connected to the grout to achieve the effect of drilling grouting.

[0020] like Figure 6 As shown, hydraulic slide rods 151 are slidably mounted in the inner circumferential array of the drill rod mounting block 11. The top of the hydraulic slide rods 151 is fixedly mounted to the drilling rig 12, and the bottom of the hydraulic slide rods 151 is in contact with the centering member 23.

[0021] It should be noted that a hydraulic slide rod 151 is slidably mounted in the inner circumferential array of the drill rod mounting block 11. The top of the hydraulic slide rod 151 is fixedly mounted to the drilling machine 12, and the bottom of the hydraulic slide rod 151 contacts the centering member 23. When the hydraulic slide rod 151 descends, it can squeeze the centering member 23, thereby centering the position of the drill rod 15, improving the drilling accuracy and stability, and preventing the drill rod 15 from tilting during drilling.

[0022] like Figure 6 As shown, a connecting pipe 131 is fixedly installed at the bottom of the grouting component 13, and the bottom of the connecting pipe 131 is connected to the top of the drilling rig 12.

[0023] It should be noted that a connecting pipe 131 is fixedly installed at the bottom of the grouting component 13. The bottom of the connecting pipe 131 is connected to the top of the drilling rig 12. The grout flowing inside the grouting pipe 14 enters the inside of the drill rod 15 through the grouting component 13 and the connecting pipe 131, thereby completing the grouting work.

[0024] like Figures 3 to 4 As shown, the adjusting member 22 includes a first adjusting block 221 fixedly installed in a circumferential array outside the first stabilizing ring 21, a first slider 222 slidably installed inside the first adjusting block 221, and a first adjusting rod 223 fixedly installed at the end of the first slider 222.

[0025] It should be noted that when it is necessary to support the stabilizing device 2 and the drill rod mounting block 11, the first slider 222 and the first adjusting rod 223 can be slid to make the first adjusting rod 223 support the ground, thus completing the support function.

[0026] like Figures 3 to 4 As shown, the adjusting member 22 includes a second adjusting rod 224 that is slidably installed inside the first adjusting rod 223, and an adjusting support block 225 is fixedly installed at the bottom of the second adjusting rod 224.

[0027] It should be noted that, in order to facilitate support and height adjustment, a second adjusting rod 224 and an adjusting support block 225 are provided inside the first adjusting rod 223. The adjusting support block 225 is convenient to support on the ground, while the second adjusting rod 224 is convenient to adjust and adapt to the height.

[0028] like Figures 3 to 4 As shown, the adjusting member 22 includes an adjusting fixing ring 226 fixedly installed outside the first adjusting rod 223. The adjusting fixing ring 226 has a second adjusting groove 227 inside. A third adjusting rod 228 is slidably installed inside the second adjusting groove 227. A centering member 23 is provided at the end of the third adjusting rod 228.

[0029] It should be noted that by adjusting the position of the third adjusting rod 228 and then tightening the third adjusting rod 228 with bolts, when the hydraulic slide rod 151 descends, it can squeeze the centering part 23, thereby clamping and centering the drill rod 15, maintaining the stability of the drill rod 15 during drilling, and preventing the drill rod 15 from tilting.

[0030] like Figures 3 to 5 As shown, the centering component 23 includes a first centering rod 231 fixedly installed on the width center axis of the third adjusting rod 228. A centering pressing rod 232 is rotatably installed on one side of the first centering rod 231, and a centering following tube 233 is rotatably installed on the other side of the first centering rod 231. A centering slide rod 234 is slidably installed at the bottom of the centering following tube 233. A pressing semicircular block 236 is fixedly installed at the end of the centering slide rod 234. A contact ball 237 is movably installed inside the pressing semicircular block 236. A first spring 235 is fixedly installed at the top of the pressing semicircular block 236, and the top of the first spring 235 is fixedly connected to the centering following tube 233.

[0031] It should be noted that when the hydraulic slide bar 151 descends, it can drive the centering compression rod 232 to rotate. A torsion spring is provided at the connection position between the centering compression rod 232 and the centering follower tube 233. Therefore, the rotation of the centering compression rod 232 can drive the centering follower tube 233 to rotate, thereby driving the contact ball 237 to clamp and center the outside of the drill rod 15, reducing the problem of the drill rod 15 tilting when drilling.

[0032] like Figures 4 to 7 As shown, the adapting component 24 includes a first adapting rod 241 fixedly installed outside the first stabilizing ring 21. An adapting limiting block 244 is fixedly installed at the bottom of the drill pipe mounting block 11. An adapting limiting rod 243 is fixedly installed on the side of the adapting limiting block 244. An adapting frame 242 is fixedly installed at the bottom of the adapting limiting block 244. The adapting frame 242 engages with the first adapting rod 241. The adapting limiting rod 243 is inserted into the interior of the first adapting rod 241. A second adapting rod 246 is slidably installed inside the first adapting rod 241. The adapting limiting rod 243 is used to limit the second adapting rod 246. A first adapting U-shaped block 247 is fixedly installed at the end of the second adapting rod 246. A second adapting U-shaped block 248 is rotatably installed inside the first adapting U-shaped block 247. A third adapting rod 249 is fixedly installed on the side of the second adapting U-shaped block 248. The side of the third adapting rod 249 is fixedly connected to the main frame 1.

[0033] It should be noted that when the drill rod 15 drills into the rock formation, the drilling speed needs to change. Therefore, the current drilling speed cannot meet the feed rate. When the descent speed of the drill rod 15 slows down, the feed rate needs to be adjusted. Therefore, an adaptation element 24 is provided on the side of the first stabilizing ring 21. When the feed is too fast, the drill rig 12 and the drill rod 15 will rise. At this time, the drill rig 12 needs to be shut down and the parameters readjusted for drilling. Therefore, an adaptation limit block 244, an adaptation frame 242, and an adaptation limit rod 243 are provided. When the adaptation limit rod 243 no longer contacts the surface of the second adaptation rod 246, the drill rig 12 is shut down, which facilitates the detection and adjustment of parameters. The first adaptation U-shaped block 247 and the second adaptation U-shaped block 248 provide a certain elastic space for the drill rod 15 when it is slightly tilted and bent, preventing the drill rod 15 from breaking after tilting and improving the safety of the drill rod 15 during use.

[0034] like Figure 5 As shown, a torsion spring is provided between the centering compression rod 232 and the centering follower tube 233.

[0035] It should be noted that a torsion spring is provided between the centering extrusion rod 232 and the centering follower tube 233, so that the hydraulic slide rod 151 continues to descend and extrude the centering follower tube 233. Under the action of the torsion spring, the centering follower tube 233 can clamp the drill rod 15 and will not be damaged by the rotation of the centering extrusion rod 232.

[0036] like Figure 7 As shown, the adaptation frame 242 is provided with a plurality of adaptation adjustment grooves 245, and the distance between the adaptation adjustment grooves 245 and the lower part of the adaptation frame 242 increases sequentially.

[0037] It should be noted that the adaptation frame 242 is provided with multiple adaptation adjustment grooves 245. The distance between the upper and lower parts of the adaptation frame 242 increases sequentially, so that after the adaptation adjustment grooves 245 rise, the first stabilizing ring 21 will not cause the problem of the original drilling position being undetermined due to its connection with the centering member 23.

[0038] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the embodiments described above, all of which are within the protection scope of the present invention.

Claims

1. A surface drilling device for grouting and filling areas in coal mines, comprising a main frame (1), characterized in that: A drill rod mounting block (11) is fixedly installed on the main frame (1). A drilling machine (12) is slidably installed on the drill rod mounting block (11). A grouting component (13) is fixedly installed on the drilling machine (12). A grouting pipe (14) is fixedly connected to the side of the grouting component (13). A drill rod (15) is provided inside the drilling machine (12). A stabilizing device (2) is provided at the bottom of the drill rod mounting block (11). The stabilizing device (2) is used to center the drill rod (15). The stabilizing device (2) includes a first stabilizing ring (21), an adjusting member (22), a centering member (23), and an adapting member (24). The bottom of the drill rod mounting block (11) is provided with a first stabilizing ring (21). A circular array of adjusting members (22) is fixedly installed on the outside of the first stabilizing ring (21). A centering member (23) is provided on the adjusting member (22). An adapting member (24) is fixedly installed on the side of the first stabilizing ring (21) near the main frame (1). The drilling rig (12) descends and squeezes the centering member (23) to center the drill rod (15). The adapting member (24) is used to improve the stability of the adjusting member (22).

2. The surface drilling equipment for grouting and filling areas in coal mines according to claim 1, characterized in that: The drill rod mounting block (11) has a hydraulic slide rod (151) slidably mounted in an internal circumferential array. The top of the hydraulic slide rod (151) is fixedly mounted to the drill rig (12), and the bottom of the hydraulic slide rod (151) is in contact with the centering member (23).

3. The surface drilling equipment for grouting and filling areas in coal mines according to claim 2, characterized in that: A connecting pipe (131) is fixedly installed at the bottom of the grouting component (13), and the bottom of the connecting pipe (131) is connected to the top of the drilling rig (12).

4. The surface drilling equipment for grouting and filling areas in coal mines according to claim 3, characterized in that: The adjusting component (22) includes a first adjusting block (221) fixedly installed in a circumferential array outside the first stabilizing ring (21), a first slider (222) slidably installed inside the first adjusting block (221), and a first adjusting rod (223) fixedly installed at the end of the first slider (222).

5. The surface drilling equipment for grouting and filling areas in coal mines according to claim 4, characterized in that: The adjusting component (22) includes a second adjusting rod (224) that is slidably installed inside the first adjusting rod (223), and an adjusting support block (225) is fixedly installed at the bottom of the second adjusting rod (224).

6. The surface drilling equipment for grouting and filling areas in coal mines according to claim 5, characterized in that: The adjusting member (22) includes an adjusting fixing ring (226) fixedly installed outside the first adjusting rod (223). The adjusting fixing ring (226) has a second adjusting groove (227) inside. A third adjusting rod (228) is slidably installed inside the second adjusting groove (227). A centering member (23) is provided at the end of the third adjusting rod (228).

7. The surface drilling equipment for grouting and filling areas in coal mines according to claim 6, characterized in that: The centering component (23) includes a first centering rod (231) fixedly installed on the width center axis of the third adjusting rod (228). A centering compression rod (232) is rotatably installed on one side of the first centering rod (231), and a centering follower tube (233) is rotatably installed on the other side of the first centering rod (231). A centering slide rod (234) is slidably installed at the bottom of the centering follower tube (233). A compression semicircular block (236) is fixedly installed at the end of the centering slide rod (234). A contact ball (237) is movably installed inside the compression semicircular block (236). A first spring (235) is fixedly installed at the top of the compression semicircular block (236), and the top of the first spring (235) is fixedly connected to the centering follower tube (233).

8. The surface drilling equipment for grouting and filling areas in coal mines according to claim 7, characterized in that: The adaptor (24) includes a first adaptor rod (241) fixedly installed outside the first stabilizing ring (21), an adaptor limiting block (244) fixedly installed at the bottom of the drill pipe mounting block (11), an adaptor limiting rod (243) fixedly installed on the side of the adaptor limiting block (244), an adaptor frame (242) fixedly installed at the bottom of the adaptor limiting block (244), the adaptor frame (242) engaging with the first adaptor rod (241), and the adaptor limiting rod (243) inserted into the interior of the first adaptor rod (241). The second adapting rod (246) is slidably installed inside the first adapting rod (241). The adapting limiting rod (243) is used to limit the second adapting rod (246). The end of the second adapting rod (246) is fixedly installed with a first adapting U-shaped block (247). The second adapting U-shaped block (248) is rotatably installed inside the first adapting U-shaped block (247). The side of the second adapting U-shaped block (248) is fixedly installed with a third adapting rod (249). The side of the third adapting rod (249) is fixedly connected to the main frame (1).

9. A surface drilling device for grouting and filling areas in coal mines according to claim 8, characterized in that: A torsion spring is provided between the centering compression rod (232) and the centering follower tube (233).

10. A surface drilling device for grouting and filling areas in coal mines according to claim 9, characterized in that: The adaptation frame (242) is provided with a plurality of adaptation adjustment grooves (245), and the distance between the upper and lower parts of the adaptation frame (242) increases sequentially.

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