Crawler-type drilling machine for coal mine

Abstract

The utility model discloses a crawler-type drilling machine for a coal mine, and relates to the technical field of drilling machines. The crawler-type drilling machine for the coal mine comprises a drilling machine body. The drilling machine limiting assembly comprises a limiting block, a groove is formed in the side face of the drilling machine body, a first hydraulic rod is rotationally connected into the limiting block, a second hydraulic rod is rotationally connected into the groove, the output end of the second hydraulic rod is rotationally connected with the surface of the first hydraulic rod, and the output end of the first hydraulic rod is fixedly connected with a third hydraulic rod. A drilling machine supporting plate is hinged to the output end of the third hydraulic rod, two conical rods are fixedly connected to the lower end of the drilling machine supporting plate, the drilling machine is additionally supported through the drilling machine supporting plate and the conical rods, meanwhile, the first hydraulic rod is limited through a limiting block, the supporting range of the drilling machine is enlarged, and the contact area between the drilling machine and the ground is increased; therefore, the stability of the drilling machine is improved, the drilling machine can be easily supported even on uneven terrains, the drilling machine is stable and does not shake, the drilling precision is improved, and the drilling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling rigs, in particular to a crawler type drilling rig for coal mines. Background Art

[0002] The crawler drilling rig consists of four major parts: a main machine, a pneumatic station, an operating console, and crawlers. They are interconnected with ultra-high-pressure air hoses so that the main machine can flexibly move the drilling rig. It is a complex machine composed of machines, units, and mechanisms. The drilling rig is a mechanical equipment that drives the drill tool to drill underground to obtain physical geological data during the exploration or development of mineral resources including solid ores, liquid ores, and gas ores. It is also called a drilling machine. The Chinese utility model patent, authorization announcement number "CN212614498U", discloses a pneumatic crawler drilling rig. The lower end outer surface of the main body is provided with a crawler assembly, the upper end outer surface of the crawler assembly is provided with a base, the outer surface of one side of the base is provided with an air pipe stabilization mechanism, the upper end side of the base is provided with a control assembly, and the upper middle part of the base is provided with a riser.

[0003] The above technical solution still has certain defects. The existing mine drilling rigs work in complex terrain environments and need to constantly change the drilling position and location. Frequent position changes require the drilling rig to be constantly fixed and calibrated. When drilling, the drill bit is subjected to a large force, which causes an offset effect on the drilling rig, and the drilling error will also be large. The drilling accuracy is not high, which not only affects the working efficiency of the pneumatic crawler drilling rig, but also affects the construction progress. For this reason, the utility model proposes a new solution. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide a crawler drill for coal mines, which can solve the problem that the existing mine drilling rigs need to constantly change the drilling position and location when working in a complex terrain environment. The frequent position changes require the drilling rig to be constantly fixed and calibrated. When drilling, the drill bit is subjected to a large force, which causes an offset effect on the drilling rig, and then the drilling error will also be large, and the drilling accuracy is not high, which not only affects the working efficiency of the pneumatic crawler drill, but also affects the construction progress.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a crawler drill for coal mines, comprising a drill body;

[0006] A drilling rig adjustment assembly is provided on the drilling rig body, a drilling rig limit assembly is provided on the drilling rig body, and the drilling rig limit assembly includes a limit block, which is fixedly connected to the side of the drilling rig body and is "U" shaped;

[0007] A groove is provided on the side of the drilling rig body, the first hydraulic rod is rotatably connected to the inside of the limit block, the second hydraulic rod is rotatably connected to the inside of the groove, the output end of the second hydraulic rod is rotatably connected to the surface of the first hydraulic rod, the output end of the first hydraulic rod is fixedly connected to the third hydraulic rod, the output end of the third hydraulic rod is hinged to the drilling rig support plate, and the lower end of the drilling rig support plate is fixedly connected to two tapered rods;

[0008] There are two first hydraulic rods, second hydraulic rods, third hydraulic rods, drilling rig support plates, grooves and tapered rods, which are symmetrically arranged on both sides of the limit block. The upper and lower sides of the limit block limit the two first hydraulic rods.

[0009] Preferably, there are two drilling rig limit assemblies, which are symmetrically arranged on the left and right sides of the drilling rig body. Tracks and their drive mechanisms are installed on the left and right sides of the drilling rig body, and a hydraulic drive device is arranged inside the drilling rig body.

[0010] Preferably, the drilling rig adjustment assembly includes a connecting shaft, the connecting shaft is fixedly connected to the drilling rig body, the surface of the connecting shaft is fixedly connected to the second gear, and the surface of the connecting shaft is rotatably sleeved with a drilling rig turntable;

[0011] The surface of the drill rig turntable is fixedly connected with a first pneumatic motor. The output end of the first pneumatic motor rotates through the drill rig turntable and is fixedly connected with a first gear. The first gear is meshed with a second gear.

[0012] Preferably, the drilling rig adjustment assembly further comprises a connecting frame, the connecting frame being fixedly connected to the front end of the drilling rig turntable, the surface of the connecting frame being rotatably connected to the drilling rig bracket, the upper end of the drilling rig turntable being hinged to a fourth hydraulic rod, the output end of the fourth hydraulic rod being hinged to the drilling rig bracket;

[0013] The upper end of the drilling rig bracket is fixedly connected to the second pneumatic motor, the internal rotation of the drilling rig bracket is connected to the threaded rod, the output end of the second pneumatic motor is fixedly connected to the threaded rod, the surface of the threaded rod is threadedly sleeved with a movable frame, the movable frame is slidably connected to the drilling rig bracket, and the movable frame is in the shape of a quadrangular prism.

[0014] Preferably, the upper end of the movable frame is fixedly connected to a third pneumatic motor, and the output end of the third pneumatic motor is fixedly connected to a detachable drill rod.

[0015] Preferably, a pneumatic station is fixedly installed on the upper end of the drilling rig turntable, a console is fixedly installed on the upper end of the drilling rig turntable, and a support frame is fixedly connected to the upper end of the drilling rig turntable;

[0016] The surface of the drilling rig bracket is fixedly connected with a drill rod limiting frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The crawler drill rig for coal mines provides additional support to the drill rig through the drill rig support plate and cone rod. At the same time, the limit block limits the first hydraulic rod, thereby increasing the support range of the drill rig and increasing the contact area between the drill rig and the ground, thereby improving the stability of the drill rig. It can easily complete the support even on uneven terrain, ensuring that the drill rig is stable and does not shake, improving drilling accuracy and improving drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic structural diagram of a crawler drill for coal mines according to the utility model;

[0021] Figure 2 This is a schematic diagram of the tapered rod of the utility model;

[0022] Figure 3 This is a schematic diagram of the limit block of the utility model;

[0023] Figure 4 This is a schematic diagram of the drilling rig support of the present invention.

[0024] Figure numerals: 1. Drilling rig body; 2. Limit block; 3. First hydraulic rod; 4. Second hydraulic rod; 5. Third hydraulic rod; 6. Drilling rig support plate; 7. Groove; 8. Connecting shaft; 9. Drilling rig turntable; 10. First pneumatic motor; 11. First gear; 12. Second gear; 13. Pneumatic station; 14. Support frame; 15. Connecting frame; 16. Drilling rig bracket; 17. Second pneumatic motor; 18. Threaded rod; 19. Movable frame; 20. Third pneumatic motor; 21. Drill rod; 22. Drill rod limit frame; 23. Cone rod; 24. Fourth hydraulic rod. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] See also Figure 1-4 The utility model provides a technical solution: a crawler drill for coal mines, including a drill body 1, a drill adjustment assembly, the drill adjustment assembly is arranged on the drill body 1, a drill limit assembly, the drill limit assembly is arranged on the drill body 1, the drill limit assembly includes a limit block 2, the limit block 2 is fixedly connected to the side of the drill body 1, the limit block 2 is "U" shaped, the side of the drill body 1 is provided with a groove 7, the interior of the limit block 2 is rotatably connected to the first hydraulic rod 3, the interior of the groove 7 is rotatably connected to the second hydraulic rod 4. The output end of the second hydraulic rod 4 is rotatably connected to the surface of the first hydraulic rod 3. The output end of the first hydraulic rod 3 is fixedly connected to the third hydraulic rod 5. The output end of the third hydraulic rod 5 is hinged to the drilling rig support plate 6. The lower end of the drilling rig support plate 6 is fixedly connected to two tapered rods 23. There are two first hydraulic rods 3, second hydraulic rods 4, third hydraulic rods 5, drilling rig support plate 6, grooves 7 and tapered rods 23, which are symmetrically arranged on both sides of the limit block 2. The upper and lower sides of the limit block 2 limit the two first hydraulic rods 3.

[0030] There are two drilling rig limit assemblies, which are symmetrically arranged on the left and right sides of the drilling rig body 1. Crawler tracks and their drive mechanisms are installed on the left and right sides of the drilling rig body 1, and a hydraulic drive device is arranged inside the drilling rig body 1.

[0031] The drilling rig adjustment assembly includes a connecting shaft 8, which is fixedly connected to the drilling rig body 1. The surface of the connecting shaft 8 is fixedly connected to the second gear 12. The surface of the connecting shaft 8 is rotatably sleeved with a drilling rig turntable 9. The surface of the drilling rig turntable 9 is fixedly connected to a first pneumatic motor 10. The output end of the first pneumatic motor 10 rotates through the drilling rig turntable 9 and is fixedly connected to the first gear 11. The first gear 11 is engaged with the second gear 12.

[0032] The drilling rig adjustment assembly also includes a connecting frame 15, which is fixedly connected to the front end of the drilling rig turntable 9. The surface of the connecting frame 15 is rotatably connected to the drilling rig bracket 16. The upper end of the drilling rig turntable 9 is hinged with a fourth hydraulic rod 24. The output end of the fourth hydraulic rod 24 is hinged on the drilling rig bracket 16. The upper end of the drilling rig bracket 16 is fixedly connected to a second pneumatic motor 17. The inside of the drilling rig bracket 16 is rotatably connected to a threaded rod 18. The output end of the second pneumatic motor 17 is fixedly connected to the threaded rod 18. The surface of the threaded rod 18 is threadedly sleeved with a movable frame 19. The movable frame 19 is slidably connected to the drilling rig bracket 16. The movable frame 19 is in the shape of a quadrangular prism. The upper end of the movable frame 19 is fixedly connected to a third pneumatic motor 20. The output end of the third pneumatic motor 20 is fixedly connected to a detachable drill rod 21.

[0033] A pneumatic station 13 is fixedly installed on the upper end of the drilling rig turntable 9, a console is fixedly installed on the upper end of the drilling rig turntable 9, a support frame 14 is fixedly connected to the upper end of the drilling rig turntable 9, and a drill rod limit frame 22 is fixedly connected to the surface of the drilling rig bracket 16.

[0034] When the drilling rig needs to be drilled in the mine, the drilling rig is moved to the mine, the drilling rig body 1 is started, the crawler tracks are used to move the drilling rig, the second hydraulic rod 4 is started to extend to drive the first hydraulic rod 3 to rotate around the limit block 2, the first hydraulic rod 3 is started to extend to drive the third hydraulic rod 5 and the drilling rig support plate 6 to move, the third hydraulic rod 5 is started to extend to drive the drilling rig support plate 6 and the cone rod 23 to descend, so that the cone rod 23 is inserted into the ground, which is convenient for supporting the drilling rig. The first hydraulic rod 3 is limited by the upper and lower sides of the limit block 2 to prevent the first hydraulic rod 3 from supporting the drilling rig with excessive stress at the connection between the first hydraulic rod 3 and the limit block 2, causing damage. The crawler tracks of the drilling rig body 1 and the drilling rig support plate 6 and the cone rod 23 are used to support the drilling rig, thereby increasing the support range of the drilling rig and increasing the contact area between the drilling rig and the ground, thereby improving the stability of the drilling rig. Even on uneven terrain, the support can be easily completed, ensuring that the drilling rig is stable and does not shake, and improving the drilling accuracy.

[0035] Then the fourth hydraulic rod 24 is started to extend and drive the drill rig support 16 to rotate around the connecting frame 15, so that the drill rig support 16 stands on the connecting frame 15, and the pneumatic station 13 is started to compress the air to provide power for the second pneumatic motor 17 and the third pneumatic motor 20. The second pneumatic motor 17 and the third pneumatic motor 20 are connected to the pneumatic station 13 through a high-pressure pneumatic pipeline. The third pneumatic motor 20 is started to drive the drill rod 21 to rotate, and the second pneumatic motor 17 is started to drive the threaded rod 18 to rotate. The threaded rod 18 drives the movable frame 19 to slide on the surface of the drill rig support 16. Since the movable frame 19 is in the shape of a quadrangular prism and the movable frame 19 is slidably connected to the drill rig support 16, the drill rig support 16 limits the movable frame 19 to prevent the threaded rod 18 from driving the movable frame 19 to rotate instead of moving during the rotation process. During the movement of the surface of the drill rig support 16, the movable frame 19 drives the third pneumatic motor 20 and the drill rod 21 to descend, and the drill rod 21 drills the bottom surface of the mine.

[0036] Since in the process of drilling through the drill rod 21, it is not only necessary to drill one hole in the mine, but also to drill holes in other locations of the mine. However, sometimes the locations where holes need to be drilled are distributed around the drilling rig. The first pneumatic motor 10 is started to drive the first gear 11 to rotate, and the first gear 11 rotates around the second gear 12, so that the first gear 11 not only rotates around itself but also revolves around the second gear 12, so that the first pneumatic motor 10 and the first gear 11 drive the drill rig turntable 9 to rotate around the connecting shaft 8, and the drill rig turntable 9 drives the pneumatic station 13, the support frame 14, the connecting frame 15 and the drill rig bracket 16 to rotate, thereby changing the position of the drill rod 21, that is, there is no need to change the position of the drill rig itself to drill holes in other locations of the mine, thereby improving the practicality of the drill rig, and increasing the drilling range of the drill rig. It can reduce the time for equipment transportation and reinstallation, thereby speeding up the construction progress, reducing the number of movements of the drill rig, reducing the labor intensity of the operator, and improving work efficiency.

[0037] When the drilling rig is not in use, the drilling rig bracket 16 is supported by the support frame 14. The support frame 14 can effectively prevent the drilling rig bracket 16 from tipping over or moving due to external force or its own weight. At the same time, the pressure of the drilling rig bracket 16 on the drilling rig body 1 is dispersed to ensure the stability and safety of the drilling rig. At the same time, the pneumatic station 13 and the drilling rig bracket 16 are respectively arranged on the front and rear sides of the drilling rig turntable 9, which is convenient for balancing the weight on both sides of the drilling rig turntable 9 to prevent one side from being too heavy, which can effectively maintain the stability of the drilling rig, prevent it from overturning, and improve the stability of the drilling rig.

[0038] Furthermore, the drill rig support plate 6 and the tapered rod 23 provide additional support to the drill rig, and the limit block 2 limits the first hydraulic rod 3, thereby increasing the support range of the drill rig and increasing the contact area between the drill rig and the ground, thereby improving the stability of the drill rig. Even on uneven terrain, the support can be easily completed, ensuring that the drill rig is stable and does not shake, improving drilling accuracy, and improving drilling efficiency.

[0039] By rotating the drill turntable 9, it is convenient to adjust the position of the drill rod 21, so that it is convenient to drill holes in other locations of the mine without moving the drill rig, thereby improving the practicality of the drill rig and increasing the drilling range of the drill rig. It can reduce the time for equipment transportation and reinstallation, thereby speeding up the construction progress, reducing the number of times the drill rig is moved, reducing the labor intensity of the operator, and improving work efficiency.

[0040] Working principle: When using the device, when a drilling rig is needed to drill a hole in a mine, the drilling rig is moved to the mine, the drilling rig body 1 is started, the drilling rig is moved by the crawler, the second hydraulic rod 4 is started to extend to drive the first hydraulic rod 3 to rotate around the limit block 2, the first hydraulic rod 3 is started to extend to drive the third hydraulic rod 5 and the drilling rig support plate 6 to move, the third hydraulic rod 5 is started to extend to drive the drilling rig support plate 6 and the cone rod 23 to descend, so that the cone rod 23 is inserted into the ground, which is convenient for supporting the drilling rig. The first hydraulic rod 3 is limited by the upper and lower sides of the limit block 2 to prevent the first hydraulic rod 3 from supporting the drilling rig with excessive stress at the connection between the first hydraulic rod 3 and the limit block 2, causing damage. The crawler of the drilling rig body 1 itself and the drilling rig support plate 6 and the cone rod 23 are jointly supported to increase the support range of the drilling rig, increase the contact area between the drilling rig and the ground, thereby improving the stability of the drilling rig, and easily completing the support even on uneven terrain, ensuring that the drilling rig is stable and does not shake, and improving the drilling accuracy.

[0041] Then the fourth hydraulic rod 24 is started to extend and drive the drill rig support 16 to rotate around the connecting frame 15, so that the drill rig support 16 stands on the connecting frame 15, and the pneumatic station 13 is started to compress the air to provide power for the second pneumatic motor 17 and the third pneumatic motor 20. The second pneumatic motor 17 and the third pneumatic motor 20 are connected to the pneumatic station 13 through a high-pressure pneumatic pipeline. The third pneumatic motor 20 is started to drive the drill rod 21 to rotate, and the second pneumatic motor 17 is started to drive the threaded rod 18 to rotate. The threaded rod 18 drives the movable frame 19 to slide on the surface of the drill rig support 16. Since the movable frame 19 is in the shape of a quadrangular prism and the movable frame 19 is slidably connected to the drill rig support 16, the drill rig support 16 limits the movable frame 19 to prevent the threaded rod 18 from driving the movable frame 19 to rotate instead of moving during the rotation process. During the movement of the surface of the drill rig support 16, the movable frame 19 drives the third pneumatic motor 20 and the drill rod 21 to descend, and the drill rod 21 drills the bottom surface of the mine.

[0042] Since in the process of drilling through the drill rod 21, it is not only necessary to drill one hole in the mine, but also to drill holes in other locations of the mine. However, sometimes the locations where holes need to be drilled are distributed around the drilling rig. The first pneumatic motor 10 is started to drive the first gear 11 to rotate, and the first gear 11 rotates around the second gear 12, so that the first gear 11 not only rotates around itself but also revolves around the second gear 12, so that the first pneumatic motor 10 and the first gear 11 drive the drill rig turntable 9 to rotate around the connecting shaft 8, and the drill rig turntable 9 drives the pneumatic station 13, the support frame 14, the connecting frame 15 and the drill rig bracket 16 to rotate, thereby changing the position of the drill rod 21, that is, there is no need to change the position of the drill rig itself to drill holes in other locations of the mine, thereby improving the practicality of the drill rig, and increasing the drilling range of the drill rig. It can reduce the time for equipment transportation and reinstallation, thereby speeding up the construction progress, reducing the number of movements of the drill rig, reducing the labor intensity of the operator, and improving work efficiency.

[0043] When the drilling rig is not in use, the drilling rig bracket 16 is supported by the support frame 14. The support frame 14 can effectively prevent the drilling rig bracket 16 from tipping over or moving due to external force or its own weight. At the same time, the pressure of the drilling rig bracket 16 on the drilling rig body 1 is dispersed to ensure the stability and safety of the drilling rig. At the same time, the pneumatic station 13 and the drilling rig bracket 16 are respectively arranged on the front and rear sides of the drilling rig turntable 9, which is convenient for balancing the weight on both sides of the drilling rig turntable 9 to prevent one side from being too heavy, which can effectively maintain the stability of the drilling rig, prevent it from overturning, and improve the stability of the drilling rig.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A crawler drill for coal mines, characterized by: It comprises a drilling rig body (1); A drilling rig adjustment component, the drilling rig adjustment component is arranged on the drilling rig body (1); a drilling rig limiting component, the drilling rig limiting component is arranged on the drilling rig body (1); the drilling rig limiting component includes a limiting block (2); the limiting block (2) is fixedly connected to the side of the drilling rig body (1); the limiting block (2) is "U"-shaped; A groove (7) is provided on the side of the drilling rig body (1); the interior of the limit block (2) is rotatably connected to a first hydraulic rod (3); the interior of the groove (7) is rotatably connected to a second hydraulic rod (4); the output end of the second hydraulic rod (4) is rotatably connected to the surface of the first hydraulic rod (3); the output end of the first hydraulic rod (3) is fixedly connected to a third hydraulic rod (5); the output end of the third hydraulic rod (5) is hinged to a drilling rig support plate (6); and the lower end of the drilling rig support plate (6) is fixedly connected to two tapered rods (23); There are two first hydraulic rods (3), two second hydraulic rods (4), two third hydraulic rods (5), a drilling rig support plate (6), two grooves (7) and two tapered rods (23), which are symmetrically arranged on both sides of the limit block (2). The upper and lower sides of the limit block (2) limit the two first hydraulic rods (3).

2. A crawler drill for coal mines according to claim 1, characterized in that: There are two drilling rig limit assemblies, which are symmetrically arranged on the left and right sides of the drilling rig body (1). Tracks and their drive mechanisms are installed on the left and right sides of the drilling rig body (1), and a hydraulic drive device is arranged inside the drilling rig body (1).

3. The crawler drill for coal mines according to claim 1, characterized in that: The drilling rig adjustment assembly comprises a connecting shaft (8), the connecting shaft (8) is fixedly connected to the drilling rig body (1), a second gear (12) is fixedly connected to the surface of the connecting shaft (8), and a drilling rig turntable (9) is rotatably sleeved on the surface of the connecting shaft (8); A first pneumatic motor (10) is fixedly connected to the surface of the drilling rig turntable (9); an output end of the first pneumatic motor (10) rotates through the drilling rig turntable (9) and is fixedly connected to a first gear (11); the first gear (11) is meshed with a second gear (12).

4. The crawler drill for coal mines according to claim 1, characterized in that: The drilling rig adjustment assembly further comprises a connecting frame (15), the connecting frame (15) being fixedly connected to the front end of the drilling rig turntable (9), the surface of the connecting frame (15) being rotatably connected to a drilling rig support (16), the upper end of the drilling rig turntable (9) being hinged to a fourth hydraulic rod (24), the output end of the fourth hydraulic rod (24) being hinged to the drilling rig support (16); The upper end of the drilling rig support (16) is fixedly connected to a second pneumatic motor (17), the interior of the drilling rig support (16) is rotatably connected to a threaded rod (18), the output end of the second pneumatic motor (17) is fixedly connected to the threaded rod (18), the surface of the threaded rod (18) is threadedly sleeved with a movable frame (19), the movable frame (19) is slidably connected to the drilling rig support (16), and the movable frame (19) is in the shape of a quadrangular prism.

5. The crawler drill for coal mines according to claim 4, characterized in that: The upper end of the movable frame (19) is fixedly connected to a third pneumatic motor (20), and the output end of the third pneumatic motor (20) is fixedly connected to a detachable drill rod (21).

6. The crawler drill for coal mines according to claim 3, characterized in that: A pneumatic station (13) is fixedly installed on the upper end of the drilling rig turntable (9), a control console is fixedly installed on the upper end of the drilling rig turntable (9), and a support frame (14) is fixedly connected to the upper end of the drilling rig turntable (9); A drill rod limiting frame (22) is fixedly connected to the surface of the drilling rig support (16).

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