A coal seam mining floor roadway drilling mechanism

Abstract

The utility model discloses a kind of coal seam exploitation floor roadway drilling mechanism, it is related to coal seam exploitation auxiliary equipment technical field;Including floor, the upper surface of floor near middle part position is fixedly installed with rectangular box, guiding mechanism is arranged between the front and rear inner wall of rectangular box, the upper surface of rectangular box is fixedly installed with electric linear module, the slider right side surface of electric linear module is fixedly installed with driving mechanism, drill rod main body is provided on the lower surface of driving mechanism, rectangular opening is set up on the bottom corresponding to drill rod main body, dust collecting mechanism is fixedly installed on the floor corresponding to rectangular opening;The utility model can monitor the pressure and torque of drill rod main body, effectively avoid the damage of motor or drill rod main body due to excessive pressure or torque, increase the limiting guide function to drill rod main body, make drilling process more stable, drilling position is accurate, increase the dust collection function in drilling process, can blow air cooling to motor, improve service life.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for coal seam mining, specifically a drilling mechanism for the bottom roadway of coal seam mining. Background Technology

[0002] In coal mining faces with thick coal seams, strong pre-support stress is generated in front of the working face and transmitted through the coal seam to the floor strata, forming a high-stress zone in the floor strata. As the working face advances, the pre-support stress in front of the working face and the high stress in the floor also move forward. When the working face approaches the stop line, the mining-induced stress in the floor will act on the floor roadways, causing intensified roadway deformation.

[0003] Mining stress is the root cause of severe deformation in the floor roadway. The key to solving this problem lies in mitigating the impact of mining and achieving stress transfer. Identifying high-stress sources and stress transmission paths, and pre-fracturing key rock strata with hydraulic fracturing creates fracture zones in space. This partially severs the stress transmission structure of the rock strata, altering the high-stress transmission path in advance and transferring the high stress to the periphery of the floor roadway, thereby reducing roadway stress and effectively controlling roadway deformation. Pre-drilling fracturing boreholes within the roadway allows for hydraulic fracturing of the corresponding coal and rock strata, followed by observation of the surrounding rock deformation in the main floor roadway to analyze and verify the research results.

[0004] In existing technologies, conventional drilling mechanisms for coal seam mining floor roadways cannot monitor the downward pressure and torque of the drill rod during use. When the pressure and torque exceed the set values, it can easily damage the motor or drill rod. Furthermore, due to the long length of the drill rod, it is prone to shaking during drilling, causing deformation of the drill rod or inaccurate drilling position. In addition, dust is generated during the drilling process, which pollutes the on-site environment and is detrimental to its use. Utility Model Content

[0005] This utility model provides a drilling mechanism for the bottom roadway in coal seam mining to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drilling mechanism for a coal seam mining floor roadway, comprising a floor plate, with rollers fixedly mounted in a rectangular shape at the four corners of the lower surface of the floor plate, and limit mechanisms provided on the floor plate near the rollers; a rectangular box fixedly mounted near the center of the upper surface of the floor plate, with a guide mechanism provided between the front and rear inner walls of the rectangular box; an electric linear module fixedly mounted on the upper surface of the rectangular box, with a drive mechanism fixedly mounted on the right side of the slider of the electric linear module; a drill rod body provided on the lower surface of the drive mechanism, with the drill rod body and the guide mechanism corresponding vertically; a rectangular opening opened on the bottom of the corresponding drill rod body; a dust collection mechanism fixedly mounted on the floor plate corresponding to the rectangular opening; and a control box installed near the left side of the upper surface of the floor plate, with an alarm provided on the control box.

[0007] Furthermore, a handle is fixedly installed on the upper surface of the base plate near the left edge.

[0008] Furthermore, the limiting mechanism includes an electric telescopic rod, a tapered insert rod, and a through hole. The electric telescopic rod is fixedly installed on the upper surface of the base plate, and the tapered insert rod is fixedly installed on the lower surface of the output shaft of the electric telescopic rod. The base plate corresponding to the tapered insert rod has a through hole.

[0009] Furthermore, the guiding mechanism includes a bearing assembly, a ball screw, a handle, a ball nut, an arc-shaped clamp, and a guide sleeve. The ball screw is mirror-mounted on the front and rear inner walls of the rectangular box via the bearing assembly, and the front and rear ball screws are fixedly connected. A handle is fixedly mounted on the end of the ball screw located on the outer side of the rectangular box. A ball nut is provided on the ball screw, and an arc-shaped clamp is mirror-mounted on the right side of the front and rear ball nuts. The guide sleeve is clamped between the arc-shaped clamps.

[0010] Furthermore, the drive mechanism includes a mounting bracket, a pressure sensor, a mounting plate, a motor, a torque sensor, and a mounting sleeve. The mounting bracket is fixedly mounted on the right side of the electric linear module slider. The pressure sensor is arranged in a rectangular pattern on the upper inner wall of the mounting bracket. The mounting plate is fixedly mounted on the lower surface of the pressure sensor. The motor is fixedly mounted on the lower surface of the mounting plate. The output shaft of the motor is fixedly connected to the input shaft of the torque sensor. The torque sensor is fixedly mounted on the left inner wall of the mounting bracket. The mounting sleeve is fixedly mounted on the lower surface of the output shaft of the torque sensor, and the mounting sleeve is used for mounting and fixing the drill rod body.

[0011] Furthermore, the dust collection mechanism includes a fan, a dust collection nozzle, a hose, an air distribution box, and an air outlet. The fan is fixedly installed on the upper surface of the base plate. A dust collection nozzle is fixedly installed on the air inlet of the fan, and a dust collection hood is fixedly installed on the inner right side of the rectangular opening. The air outlet of the fan is connected to the air distribution box through a hose. The air distribution box is fixedly installed on the right side of the mounting frame, and air outlets are evenly embedded on the left side wall of the air distribution box.

[0012] Compared with the prior art, this utility model provides a drilling mechanism for the floor roadway in coal seam mining, which has the following beneficial effects: 1. The drilling mechanism for the bottom roadway of this coal seam mining can monitor the pressure and torque of the motor and drill rod body by setting pressure and torque sensors in the drive mechanism, which can effectively avoid damage to the motor or drill rod body due to excessive pressure or torque.

[0013] 2. The drilling mechanism for the bottom roadway of this coal seam mining has an added limiting and guiding function for the main body of the drill rod by setting a limiting mechanism, which makes the main body of the drill less prone to shaking, the drilling process more stable, and the drilling position more accurate.

[0014] 3. The drilling mechanism for the bottom roadway of this coal seam mining has a dust collection mechanism to collect dust during the drilling process, preventing dust from spreading and polluting the environment. In addition, the air blown out is directed towards the motor, which can cool the motor and improve its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a three-dimensional structural diagram of the electric telescopic pole of this utility model; Figure 4 This is a top sectional view of the rectangular box of this utility model.

[0016] In the diagram: 1. Base plate; 2. Roller; 3. Limiting mechanism; 301. Electric telescopic rod; 302. Tapered insert rod; 303. Through hole; 4. Rectangular box; 5. Guide mechanism; 501. Bearing assembly; 502. Ball screw; 503. Handle; 504. Ball nut; 505. Arc-shaped clamp; 506. Guide sleeve; 6. Electric linear module; 7. Drive mechanism; 701. Mounting bracket; 702. Pressure sensor; 703. Mounting plate; 704. Motor; 705. Torque sensor; 706. Mounting sleeve; 8. Drill rod body; 9. Rectangular opening; 10. Dust collection mechanism; 101. Fan; 102. Dust collection nozzle; 103. Hose; 104. Air distribution box; 105. Air outlet; 11. Control box; 12. Alarm; 13. Handle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 -Body 4, This utility model discloses a drilling mechanism for the bottom roadway of coal seam mining, including a bottom plate 1. Rollers 2 are fixedly mounted in a rectangular shape at the four corners of the lower surface of the bottom plate 1, and limit mechanisms 3 are provided on the bottom plate 1 near the rollers 2. A rectangular box 4 is fixedly mounted on the upper surface of the bottom plate 1 near the center. A guide mechanism 5 is provided between the front and rear inner walls of the rectangular box 4. An electric linear module 6 is fixedly mounted on the upper surface of the rectangular box 4. A drive mechanism 7 is fixedly mounted on the right side of the slider of the electric linear module 6. The lower surface of the actuator 7 is provided with a drill rod body 8, and the drill rod body 8 is arranged vertically and vertically with the guide mechanism 5. A rectangular opening 9 is opened on the bottom of the drill rod body 8. A dust collection mechanism 10 is fixedly installed on the base plate 1 corresponding to the rectangular opening 9. A control box 11 is installed on the upper surface of the base plate 1 near the left side. The control box 11 is electrically connected to all electrical components in the borehole. An operation display screen is provided on the upper surface of the control box 11. A storage battery is installed inside the control box 11. An alarm 12 is installed on the control box 11.

[0019] Specifically, a handle 13 is fixedly installed on the upper surface of the base plate 1 near the left edge.

[0020] In this embodiment, the handle 13 facilitates the hand-held movement of the drill rod mechanism.

[0021] Specifically, the limiting mechanism 3 includes an electric telescopic rod 301, a tapered insert rod 302, and a through hole 303. The electric telescopic rod 301 is fixedly installed on the upper surface of the base plate 1. The tapered insert rod 302 is fixedly installed on the lower surface of the output shaft of the electric telescopic rod 301. The base plate 1 corresponding to the tapered insert rod 302 has a through hole 303.

[0022] In this embodiment, the output shaft of the electric telescopic rod 301 drives the tapered insert rod 302 to move downward in the through hole 303, so that the tapered insert rod 302 is inserted into the ground, and the base plate 1 is periodically positioned so that the base plate 1 is placed horizontally and firmly, and the lower surface of the roller 2 is lifted off the ground.

[0023] Specifically, the guiding mechanism 5 includes a bearing assembly 501, a ball screw 502, a handle 503, a ball nut 504, an arc-shaped clamping plate 505, and a guide sleeve 506. The ball screw 502 is mirror-mounted on the front and rear inner walls of the rectangular box 4 via the bearing assembly 501, and the front and rear ball screws 502 are fixedly connected. A handle 503 is fixedly mounted on the end of the ball screw 502 located on the outer side of the rectangular box 4. A ball nut 504 is provided on the ball screw 502, and an arc-shaped clamping plate 505 is mirror-mounted on the right side of the front and rear ball nuts 504. The guide sleeve 506 is clamped between the arc-shaped clamping plates 505.

[0024] In this embodiment, the handle 503 drives the front and rear mirror-arranged ball screws 502 to rotate synchronously in the bearing assembly 501. The rotation of the front and rear ball screws 502 causes the front and rear ball nuts 504 to move back and forth. The front and rear ball nuts 504 drive the front and rear arc-shaped clamps 505 to move, so that the front and rear arc-shaped clamps 505 clamp and fix the guide sleeve 506. The guide sleeve 506 is movably sleeved on the outside of the drill pipe body 8, so as to achieve the effect of limiting and protecting the drill pipe body 8. The guide sleeve 506 can be replaced with different specifications according to the specifications of the drill pipe body 8.

[0025] Specifically, the drive mechanism 7 includes a mounting bracket 701, a pressure sensor 702, a mounting plate 703, a motor 704, a torque sensor 705, and a mounting sleeve 706. The mounting bracket 701 is fixedly mounted on the right side of the slider of the electric linear module 6. The pressure sensor 702 is arranged in a rectangular pattern on the upper inner wall of the mounting bracket 701. The mounting plate 703 is fixedly mounted on the lower surface of the pressure sensor 702. The motor 704 is fixedly mounted on the lower surface of the mounting plate 703. The output shaft of the motor 704 is fixedly connected to the input shaft of the torque sensor 705. The torque sensor 705 is fixedly mounted on the left inner wall of the mounting bracket 701. The mounting sleeve 706 is fixedly mounted on the lower surface of the output shaft of the torque sensor 705, and the mounting sleeve 706 is used for mounting and fixing the drill rod body 8.

[0026] In this embodiment, the mounting frame 701 moves downward with the slider of the electric linear module 6, causing the mounting frame 701 to move downward via the pressure sensor 702 and the mounting plate 703 motor 704. The motor 704 drives the drill rod body 8 on the lower side of the mounting sleeve 706 to move downward via the torque sensor 705. The output shaft of the motor 704 drives the input shaft of the torque sensor 705 to rotate, causing the output shaft of the torque sensor 705 to drive the drill rod body 8 to rotate, so that the drill rod body 8 is inserted into the guide sleeve 506 and continues to move downward to drill a hole in the tunnel floor. During the drilling process, the pressure sensor 702 and the torque sensor 705 monitor the upward pressure and torque of the drill rod body 8. When the upward pressure or torque of the drill rod body 8 exceeds the set value, the information is fed back to the control box 11. The control box 11 stops the motor 704 and triggers the alarm 12, allowing the staff to check the situation.

[0027] Specifically, the dust collection mechanism 10 includes a fan 101, a dust collection nozzle 102, a hose 103, an air distribution box 104, and an air outlet 105. The fan 101 is fixedly installed on the upper surface of the base plate 1. The dust collection nozzle 102 is fixedly installed on the air inlet of the fan 101, and the dust collection cover is fixedly installed on the inner right side of the rectangular opening 9. The air outlet of the fan 101 is connected to the air distribution box 104 through the hose 103. The air distribution box 104 is fixedly installed on the right side of the mounting frame 701, and the air outlets 105 are evenly embedded on the left side wall of the air distribution box 104.

[0028] In this embodiment, the turbine fan inside the air exchanger 101 draws air from the dust collection nozzle 102 through the air inlet, so that the dust generated when drilling the drill rod body 8 enters the air exchanger 101. The dust in the air is filtered by the filter element on the inner wall of the air exchanger 101 to prevent the dust from drifting randomly. The air blown out by the turbine fan inside the air exchanger 101 is blown into the air distribution box 104 through the hose 103, and then blown towards the motor 704 and torque sensor 705 through the air outlet 105 on the left side of the air distribution box 104, so as to achieve the effect of cooling the motor 704 and torque sensor 705. The hose 103 can move up and down with the drive mechanism 7. Multiple filter elements are inserted near the upper side of the right side of the air exchanger 101, and a dust collection box is inserted at the lower edge of the right side wall of the air exchanger 101.

[0029] In use, the handle 13 is used to move the drilling mechanism to the desired drilling position via the rollers 2 on the lower surface of the base plate 1. Then, the output shaft of the electric telescopic rod 301 in the limiting mechanism 3 drives the tapered insert rod 302 to move downwards within the through hole 303, inserting the tapered insert rod 302 into the ground. The base plate 1 is then leveled and placed firmly, and the lower surface of the rollers 2 is lifted off the ground. The slider of the electric linear module 6 drives the mounting bracket 701 in the drive mechanism 7 to move downwards. The mounting bracket 701 moves downwards via the pressure sensor 702 and the motor 704 on the mounting plate 703. The motor 704 drives the drill rod body 8 on the lower side of the mounting sleeve 706 to move downwards via the torque sensor 705. The output shaft of the motor 704 drives the input shaft of the torque sensor 705 to rotate, causing the output shaft of the torque sensor 705 to rotate the drill rod body 8, inserting the drill rod body 8 into the guide sleeve 506 and continuing to move downwards to drill a hole in the tunnel floor. The drilling process is more stable and the drilling position is more accurate. Indeed, during the drilling process, pressure sensor 702 and torque sensor 705 monitor the upward pressure and torque of the drill rod body 8. When the upward pressure or torque of the drill rod body 8 exceeds the set value, the information is fed back to control box 11. Control box 11 stops motor 704 and triggers alarm 12, allowing personnel to check the situation. The turbine fan inside the air exchanger 101 in the dust collection mechanism 10 draws air through the air inlet to the dust collection nozzle 102, thereby allowing the drill rod body 8 to drill... Dust generated during ventilation enters the air exchanger 101 and is filtered by the filter element on the inner wall of the air exchanger 101 to prevent dust from drifting away. The air blown out by the turbine fan in the air exchanger 101 is blown into the air distribution box 104 through the hose 103, and then blown towards the motor 704 and torque sensor 705 through the air outlet 105 on the left side of the air distribution box 104, thereby achieving the effect of cooling the motor 704 and torque sensor 705 and improving their service life.

[0030] In summary, this drilling mechanism for the bottom roadway of coal seam mining can monitor the pressure and torque of the drill rod body 8, effectively preventing damage to the motor 704 or the drill rod body 8 due to excessive pressure or torque. It also adds a limiting and guiding function to the drill rod body 8, making the drilling process more stable and the drilling position more accurate. It also adds a dust collection function during the drilling process and can blow air to cool the motor 704, thus improving its service life.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling mechanism for a coal seam mining floor roadway, comprising a floor (1), characterized in that: Rollers (2) are fixedly mounted in a rectangular shape at the four corners of the lower surface of the base plate (1), and limit mechanisms (3) are provided on the base plate (1) near the rollers (2). A rectangular box (4) is fixedly mounted on the upper surface of the base plate (1) near the middle. A guide mechanism (5) is provided between the front and rear inner walls of the rectangular box (4). An electric linear module (6) is fixedly mounted on the upper surface of the rectangular box (4). A drive mechanism (7) is fixedly mounted on the right side of the slider of the electric linear module (6). The drive mechanism (7) includes a mounting bracket (701), a pressure sensor (702), a mounting plate (703), a motor (704), a torque sensor (705), and a mounting sleeve (706). The mounting bracket (701) is fixedly mounted on the right side of the slider of the electric linear module (6). A pressure sensor (702) is arranged in a rectangular shape on the upper inner wall of the mounting bracket (701). The lower surface of the pressure sensor (702) A mounting plate (703) is fixedly installed. A motor (704) is fixedly installed on the lower surface of the mounting plate (703). The output shaft of the lower surface of the motor (704) is fixedly connected to the input shaft of the torque sensor (705). The torque sensor (705) is fixedly installed on the inner left side of the mounting bracket (701). A mounting sleeve (706) is fixedly installed on the lower surface of the output shaft of the torque sensor (705). The mounting sleeve (706) is used to install and fix the drill rod body (8). The lower surface of the drive mechanism (7) is provided with the drill rod body (8). The drill rod body (8) and the guide mechanism (5) are arranged vertically. A rectangular opening (9) is opened on the bottom of the corresponding part of the drill rod body (8). A dust collection mechanism (10) is fixedly installed on the bottom plate (1) corresponding to the rectangular opening (9). A control box (11) is installed on the upper surface of the bottom plate (1) near the left side. An alarm (12) is provided on the control box (11).

2. The drilling mechanism for the bottom roadway of coal seam mining according to claim 1, characterized in that: A handle (13) is fixedly installed on the upper surface of the base plate (1) near the left edge.

3. The drilling mechanism for the bottom roadway of coal seam mining according to claim 1, characterized in that: The limiting mechanism (3) includes an electric telescopic rod (301), a tapered insert rod (302), and a through hole (303). The electric telescopic rod (301) is fixedly installed on the upper surface of the base plate (1). The tapered insert rod (302) is fixedly installed on the lower surface of the output shaft of the electric telescopic rod (301). The base plate (1) corresponding to the tapered insert rod (302) has a through hole (303).

4. The drilling mechanism for the bottom roadway of coal seam mining according to claim 1, characterized in that: The guiding mechanism (5) includes a bearing assembly (501), a ball screw (502), a handle (503), a ball nut (504), an arc-shaped clamp (505), and a guide sleeve (506). The ball screw (502) is mirror-mounted on the front and rear inner walls of the rectangular box (4) via the bearing assembly (501), and the front and rear ball screws (502) are fixedly connected. The handle (503) is fixedly mounted on the end of the ball screw (502) located on the outside of the rectangular box (4). The ball screw (502) is provided with a ball nut (504), and the right side of the front and rear ball nuts (504) is mirror-mounted with an arc-shaped clamp (505). The guide sleeve (506) is clamped between the arc-shaped clamps (505).

5. A drilling mechanism for the bottom roadway of coal seam mining according to claim 1, characterized in that: The dust collection mechanism (10) includes a fan (101), a dust collection nozzle (102), a hose (103), an air distribution box (104), and an air outlet (105). The fan (101) is fixedly installed on the upper surface of the base plate (1). The dust collection nozzle (102) is fixedly installed on the air inlet of the fan (101), and the dust collection cover is fixedly installed on the inner right side of the rectangular opening (9). The air outlet of the fan (101) is connected to the air distribution box (104) through the hose (103). The air distribution box (104) is fixedly installed on the right side of the mounting frame (701), and the air outlet (105) is evenly embedded on the left side wall of the air distribution box (104).

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