A small drilling rig for coal mines

Abstract

The invention relates to a small drilling rig for coal mine, which comprises a main machine body, a working mechanism, a rotary reduction mechanism and a rotary support mechanism. The main machine body is fixed with track walking devices on both sides. The main machine body is provided with the working mechanism on the top. The main machine body comprises a main machine frame. The main machine frame is provided with the rotary reduction mechanism. The working mechanism is connected with the rotary reduction mechanism. The working mechanism is provided with a group of rotary support mechanisms on both sides. The working mechanism comprises a sliding frame assembly, a power head, a gripper, a synchronous lifting mechanism and a working mechanism support column. The rear end of the sliding frame assembly is connected with two synchronous lifting mechanisms. The sliding frame assembly is provided with a working mechanism support column on both sides. The working mechanism support column is connected with the rotary support mechanism. The invention reduces the height of the vehicle body and increases the stability and reliability of the equipment.

Description

Technical Field

[0001] This invention relates to the field of coal mine drilling rig technology, and in particular to a small drilling rig for coal mines. Background Technology

[0002] With economic development, there is a tendency towards overexploitation of hard coal seams, specifically reflected in the decreasing number of hard coal seams and the gradual increase in mining depth, both of which increase the difficulty of development and utilization. Soft coal seams are more prevalent in my country, accounting for approximately 42% of total coal production. Therefore, the development and utilization of coal resources is gradually shifting towards soft coal seams. In production practice, it has been found that hard coal seams, due to their intact structure and low gas content, offer faster drilling speeds and higher hole formation rates when drilling for gas drainage within the seam. Therefore, drilling rigs designed for hard coal seams are primarily based on "high torque and low speed"; because hard coal seams are relatively hard and structurally intact, higher torque not only meets the requirements for bottom hole breaking but also enables rapid hole formation, with relatively low speed requirements. However, the current industry trend is shifting towards soft coal seams. Drilling rigs designed with the "high torque and low speed" concept are not well-suited for drilling for gas drainage within soft coal seams. "High speed and high power" are more suitable for drilling for gas drainage within soft coal seams.

[0003] Furthermore, in mine roadway excavation operations, traditional anchor drilling rigs are large in size, with a wide overall shape and body. They are not flexible in operation in narrow mine roadways and have poor adaptability. It is difficult to alternate with the tunneling machine for operation. During directional drilling, construction movement, and swinging, their stability and flexibility are greatly reduced, increasing the construction time. Therefore, there is an urgent need for a small drilling rig for coal mines. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a small drilling rig for coal mines that reduces the height of the vehicle body while maintaining the overall stability of the machine.

[0005] The objective of this invention is achieved as follows: A small drilling rig for coal mines includes a main body, a working mechanism, a rotary reduction mechanism, a rotary support mechanism, a lower support column, and upper and lower support columns. Tracked walking devices are fixed to both sides of the main body, and these tracks contact the ground for moving the main body. The working mechanism is located above the main body and is used to advance drill rods. The main body includes a main frame, on which a mounting plate is mounted. A rotary reduction mechanism is mounted on the mounting plate and connected to the working mechanism. A set of rotary support mechanisms is located on each side of the working mechanism. The structure includes a carriage assembly, a power head, a clamp, a synchronous lifting mechanism, and a working mechanism support column. The rear end of the carriage assembly is connected to two synchronous lifting mechanisms on the left and right sides for adjusting the height of the working mechanism. A working mechanism support column is provided on each side of the carriage assembly, and the working mechanism support column is connected to a rotating support mechanism on the same side. The rotating support mechanism includes a rotary reducer, and the two sides of the rotary reducer are respectively connected and fixed to the left column and the right column. The left column and the right column rise and fall synchronously with the synchronous lifting mechanism. The front end of the right column is connected to the working mechanism support column on the same side through a connector.

[0006] Preferably, a propulsion cylinder is arranged in parallel on the slide assembly, the propulsion cylinder is connected to a sliding guide rod, the sliding guide rod is provided with a power head, and the power head clamps the drill pipe through a clamp.

[0007] Preferably, an electrical control box and a first auxiliary oil tank are arranged behind the working mechanism on the main body, a second auxiliary oil tank is arranged behind the electrical control box and the first auxiliary oil tank, and an operating table is arranged behind the second auxiliary oil tank.

[0008] Preferably, a computer box is installed behind the operating console.

[0009] Preferably, the computer case and the host body are connected by a rotatable mechanism.

[0010] Preferably, a lower support column is connected to each of the two front ends of the main body to stabilize the front end of the vehicle.

[0011] Preferably, the bottom of the lower support column is provided with a universal support plate.

[0012] Preferably, the rear ends of the main body are respectively provided with upper and lower support columns.

[0013] Preferably, the bottom of the upper and lower support columns is provided with a universal support plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention achieves miniaturization of the whole machine by reasonably setting up the working mechanism, the rotating support mechanism and each support column, and reducing the height of the machine body. Compared with the existing drilling rig with a height of about 1.6 meters, the height of the drilling rig of the present invention is less than 1.4 meters. The front and rear ends of the drilling rig of the present invention are equipped with support columns (i.e. support cylinders) to maintain the stability of the whole machine. At the same time, the working mechanism is set on the main machine through the rotary reduction mechanism, and the rotating support mechanism is set on both sides of the working mechanism. The rotating support mechanism is connected to the support column of the working mechanism, so that the support column of the working mechanism and the working mechanism are raised and lowered synchronously, reducing the vibration intensity of the power head when working, further realizing the stability of the working mechanism during drilling and reaming, increasing the stability and reliability of the equipment, miniaturizing the drilling rig while ensuring its mechanical performance such as torque, speed and climbing speed.

[0015] (2) The drilling rig of the present invention has a low height, small size, light weight, compact structure, simple operation and convenient maintenance; and compared with conventional directional drilling which can only adjust a small pitch angle, the working mechanism of the present invention can rotate 360° in both the radial and axial directions, and can adjust the horizontal opening height, which can adapt to narrow construction space, thereby quickly completing the construction operation and greatly improving the working efficiency of the drilling rig in narrow space. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is the front view of the present invention.

[0018] Figure 3 This is a top view of the present invention.

[0019] in: 1. Main body; 2. Working mechanism; 2. Slide assembly; 2.1. Power head; 2.2. Clamp; 2.3. Synchronous lifting mechanism; 2.4. Working mechanism support column; 2.5. Rotary reduction mechanism; 3. Rotary support mechanism; 4. Left column; 4.1. Right column; 4.2. Rotary reducer; 4.3. Lower support column; 5. Upper and lower support columns; 6. Electrical control box; 7. First auxiliary oil tank; 8. Second auxiliary oil tank; 9. Control panel; 10. Computer box; 11. Tracked walking device; 12. Implementation

[0020] To better understand the technical solution of the present invention, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of the present invention, but are merely possible implementations of the technical solution of the present invention. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components. Example 1

[0021] See Figures 1-3 , Figure 1 A schematic diagram of a small drilling rig for coal mines is shown. As shown in the figure, the small drilling rig for coal mines of the present invention includes a main body 1, a working mechanism 2, a rotary reduction mechanism 3, a rotary support mechanism 4, a lower support column 5, and upper and lower support columns 6. Tracked walking devices 12 are fixed on both sides of the main body 1, and the tracked walking devices 12 are in contact with the ground for moving the main body 1. The working mechanism 2 is provided on the top of the main body 1, and the working mechanism 2 is used to advance the drill rod. The main body 1 is also provided with an electrical control box 7, a first auxiliary oil tank 8, a second auxiliary oil tank 9, an operating table 10, and a computer box 11.

[0022] The main body 1 includes a main frame, on which a mounting plate is provided. A rotary reduction mechanism 3 is provided on the mounting plate. The rotary reduction mechanism 3 is connected to the working mechanism 2, enabling the working mechanism 2 to rotate 360° on the horizontal plane. A set of rotating support mechanisms 4 are provided on both sides of the working mechanism 2.

[0023] The working mechanism 2 includes a slide assembly 2.1, a power head 2.2, a clamp 2.3, a synchronous lifting mechanism 2.4, and a working mechanism support column 2.5. A propulsion cylinder is arranged parallel to the slide assembly 2.1. The propulsion cylinder is connected to a sliding guide rod. The power head 2.2 is provided on the sliding guide rod. The power head 2.2 clamps the drill rod through the clamp 2.3. The rear end of the slide assembly 2.1 is connected to two synchronous lifting mechanisms 2.4 on the left and right sides for adjusting the height of the working mechanism 2. A working mechanism support column 2.5 is provided on each side of the slide assembly 2.1. The working mechanism support column 2.5 is connected to the rotating support mechanism 4 on the same side.

[0024] The rotating support mechanism 4 includes a rotary reducer 4.3. The two sides of the rotary reducer 4.3 are connected and fixed to the left column 4.1 and the right column 4.2 respectively. The left column 4.1 and the right column 4.2 move up and down synchronously with the synchronous lifting mechanism 2.4 to realize the axial lifting and rotation of the working mechanism 2. The front end of the right column 4.2 is connected to the working mechanism support column 2.5 on the same side through a connector to realize the synchronous lifting and rotation of the working mechanism support column 2.5 and the working mechanism 2.

[0025] An electrical control box 7 and a first auxiliary oil tank 8 are arranged behind the working mechanism 2 on the main body 1. A second auxiliary oil tank 9 is arranged behind the electrical control box 7 and the first auxiliary oil tank 8. An operating table 10 is arranged behind the second auxiliary oil tank 9. A computer box 11 is arranged behind the operating table 10. The computer box 11 is rotatably connected to the main body 1.

[0026] The front sides of the main body 1 are each connected to a lower support column 5 to stabilize the front of the vehicle. The bottom of the lower support column 5 is provided with a universal support foot plate. The rear sides of the main body 1 are each provided with an upper and lower support column 6. The upper and lower support columns 6 are located between the first auxiliary fuel tank 8 and the second auxiliary fuel tank 9 to stabilize the rear of the vehicle. The bottom of the upper and lower support columns 6 is provided with a universal support foot plate.

[0027] The tracked traveling device 12 includes a left tracked traveling section and a right tracked traveling section symmetrically arranged on both sides of the main frame. The left side of the main frame is connected to the left tracked traveling section through a left track connecting frame, and the right side is connected to the right tracked traveling section through a right track connecting frame. The left tracked traveling section includes a sealed track assembly, a guide wheel, a sprocket, a track frame, a tensioning and buffering device, and five support rollers. The sealed track assembly includes a combined sealed track chain made of high-strength alloy steel. The track chain is fitted onto the sprocket and guide wheel arranged at the front and rear. The guide wheel is connected to the track frame. The track frame is equipped with a tensioning and buffering device. Five support rollers are connected to the bottom of the track frame. The sprocket is connected to a traveling motor. The traveling motor drives the sprocket, thereby realizing the movement of the track chain.

[0028] Working principle: The drilling rig of this invention mainly consists of an operating table, a computer box, auxiliary oil tanks, an electrical control box, a working mechanism, a main body, and a track assembly. The computer box has a movable and rotating structure, which facilitates operation and reduces the space required for drilling, making the drilling rig structure compact. Two auxiliary oil tanks are installed according to the characteristics of the machine body, which greatly increases the oil tank capacity without affecting the overall layout. The working mechanism consists of a rotary reduction mechanism, a rotary support mechanism, a slide, a power head, a clamp, and a chuck, which makes the overall machine narrow, has a wide working range, and a low minimum drilling height.

[0029] The above are merely specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. All technical solutions formed by equivalent transformations or substitutions fall within the scope of protection of the present invention.

Claims

1. A small drilling rig for coal mines, characterized in that: It includes a main body (1), a working mechanism (2), a rotary reduction mechanism (3), and a rotating support mechanism (4). Tracked walking devices (12) are fixed on both sides of the main body (1). The tracked walking devices (12) are in contact with the ground and are used to move the main body (1). The working mechanism (2) is provided above the main body (1). The working mechanism (2) is used to push the drill rod. The main body (1) includes a main frame. A mounting plate is provided on the main frame. A rotary reduction mechanism (3) is provided on the mounting plate. The working mechanism (2) is connected through the rotary reduction mechanism (3). A set of rotating support mechanisms (4) is provided on both sides of the working mechanism (2). The working mechanism (2) includes a slide assembly (2.1), a power head (2.2), a clamp (2.3), and a synchronous lifting mechanism. The slide assembly (2.1) is connected to two synchronous lifting mechanisms (2.4) on the left and right sides to adjust the height of the working mechanism (2). The slide assembly (2.1) has a working mechanism support column (2.5) on each side. The working mechanism support column (2.5) is connected to the rotating support mechanism (4) on the same side. The rotating support mechanism (4) includes a rotary reducer (4.3). The rotary reducer (4.3) is fixed to the left column (4.1) and the right column (4.2) on both sides. The left column (4.1) and the right column (4.2) are raised and lowered synchronously with the synchronous lifting mechanism (2.4). The front end of the right column (4.2) is connected to the working mechanism support column (2.5) on the same side through a connector. The slide assembly (2.1) is provided with a parallel propulsion cylinder, which is connected to a sliding guide rod. The sliding guide rod is provided with a power head (2.2), which clamps the drill rod through a clamp (2.3). An electrical control box (7) and a first auxiliary oil tank (8) are provided behind the working mechanism (2) on the main body (1). A second auxiliary oil tank (9) is provided behind the electrical control box (7) and the first auxiliary oil tank (8). An operating table (10) is provided behind the second auxiliary oil tank (9).

2. The small drilling rig for coal mines according to claim 1, characterized in that: A computer box (11) is installed behind the control panel (10).

3. A small drilling rig for coal mines according to claim 2, characterized in that: The computer case (11) and the host body (1) are connected by a rotating mechanism.

4. A small drilling rig for coal mines according to claim 1, characterized in that: The front sides of the main body (1) are respectively connected to a lower support column (5) to stabilize the front of the vehicle.

5. A small drilling rig for coal mines according to claim 4, characterized in that: The bottom of the lower support column (5) is provided with a universal support foot plate.

6. A small drilling rig for coal mines according to claim 1, characterized in that: The main body (1) has an upper and lower support column (6) on each side of its rear end.

7. A small drilling rig for coal mines according to claim 6, characterized in that: The bottom of the upper and lower support columns (6) is provided with universal support plates.

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