Long-stroke small drill carriage for coal mine

Abstract

The utility model relates to a long-stroke small drill carriage for coal mine, which comprises a main machine body and a working mechanism, the working mechanism comprises a carriage assembly, a power head, a clamp holder, a double-out thrust cylinder, a cylinder positioning slider and a power head base, and the cylinder positioning slider and the power head base are slidably arranged on the carriage assembly. A power head is fixedly arranged on the power head base, the power head clamps a drill rod through a clamp holder, the double-out thrust oil cylinder comprises a first oil cylinder and a second oil cylinder which are arranged in parallel up and down, the first oil cylinder and the second oil cylinder are arranged reversely, the first oil cylinder comprises a first cylinder barrel and a first piston rod, and the second oil cylinder comprises a second cylinder barrel and a second piston rod. The end of the first piston rod is hinged to the sliding frame assembly, and the end of the second piston rod is hinged to the power head base. According to the utility model, the double-outlet oil cylinders are arranged reversely, so that the stroke is multiplied; the positioning sliding block is matched with the base, and deformation is effectively restrained; the adaptability of the long drill rod is improved, and the steering radius is obviously reduced.

Description

Technical Field

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

[0002] In mine tunneling operations, traditional bolt drilling rigs are large in size, with a wide overall dimensions and body. This makes them inflexible and poorly adaptable in narrow mine tunnels, making it difficult to alternate operations with tunneling machines. During directional drilling, construction movement, and oscillation, their stability and flexibility are significantly reduced, increasing construction time. Current miniaturization solutions for drilling rigs neglect the following issues:

[0003] (1) Short stroke: The propulsion stroke of a conventional single-outlet hydraulic cylinder is limited, requiring frequent replacement of drill rods, resulting in low efficiency;

[0004] (2) Poor stability: The hydraulic cylinder is prone to generating rotational torque during the propulsion process, which causes the carriage to deform and affects the drilling accuracy;

[0005] (3) Large turning radius: The short drill pipe has insufficient deflection and is difficult to adapt to the directional drilling requirements of complex strata.

[0006] Therefore, in order to address the above-mentioned deficiencies, this utility model proposes a long-stroke small drilling rig for coal mines. Utility Model Content

[0007] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a long-stroke small drilling rig for coal mines, which is suitable for long-distance directional drilling in confined spaces, and solves the problems of short stroke, easy deformation and inflexible steering of existing drilling rigs.

[0008] The purpose of this utility model is achieved as follows:

[0009] A long-stroke small drilling rig for coal mines includes a main body and a working mechanism. Tracked walking devices are fixed to both sides of the main body, and these devices contact the ground for moving the main body. The main body includes a main frame, on which a working platform is mounted. A working mechanism is mounted above the working platform for advancing drill rods. A rotary reduction mechanism is mounted on the working platform and connected to the working mechanism.

[0010] The working mechanism includes a slide assembly, a power head, a clamp, a double-outlet propulsion cylinder, a cylinder positioning slider, and a power head base. The cylinder positioning slider and the power head base are slidably mounted on the slide assembly. The power head is fixedly mounted on the power head base. The power head clamps the drill rod through the clamp, which is fixed to the end of the slide assembly.

[0011] The dual-outlet propulsion cylinder includes a first cylinder and a second cylinder arranged in parallel. The first cylinder and the second cylinder are arranged in opposite directions. The first cylinder includes a first cylinder barrel and a first piston rod. The second cylinder includes a second cylinder barrel and a second piston rod. The end of the first piston rod is hinged to the slide assembly, and the end of the second piston rod is hinged to the power head base.

[0012] The first cylinder is provided with a positioning base, which is located below the positioning slider of the oil cylinder and is fixedly connected to it.

[0013] Furthermore, the opposing surfaces of the first cylinder and the second cylinder are welded together.

[0014] Furthermore, a welding oil pipe is provided on the left and right sides of the first cylinder and the second cylinder respectively. One end of the welding oil pipe is connected to port A of the first cylinder and the other end is connected to port A of the second cylinder. The other welding oil pipe is connected to port B of the first cylinder and the other end is connected to port B of the second cylinder.

[0015] Furthermore, a lifting cylinder is provided on each side of the end of the carriage assembly.

[0016] Furthermore, one end of the lifting cylinder is mounted on the working platform via a hinged connector, and the other end is connected to the carriage assembly to achieve changes in the tilt angle of the working mechanism.

[0017] Furthermore, a front support column is connected to each of the front ends of the main body to stabilize the front end of the vehicle, and the bottom of the front support column is provided with a universal support foot.

[0018] Furthermore, a rear support column is provided on each of the two rear ends of the main body to stabilize the rear end of the vehicle, and a universal support foot is provided at the bottom of the rear support column.

[0019] Furthermore, an electrical control box, an auxiliary oil tank, a water pump, an operating table, and a computer box are provided at the rear of the working mechanism, and the electrical control box, auxiliary oil tank, water pump, operating table, and computer box are all mounted on the working platform.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model discloses a long-stroke small drilling rig for coal mines, featuring an integrated structure with dual-outlet propulsion cylinders. Combined with the synergistic design of the slide and positioning slider, it significantly improves stroke efficiency and stability, and possesses the following advantages:

[0022] (1) Long stroke: The double-outlet cylinder doubles the stroke for the same length, which can be adapted to long drill pipes, reduce the frequency of replacement, and improve efficiency by more than 30%;

[0023] (2) Torque resistance: The positioning slider cooperates with the base to counteract the rotational torque of the double-outlet cylinder, reducing the deformation of the carriage by 60%;

[0024] (3) Small turning radius: The long drill rod has better deflection and the minimum turning radius is reduced by 40% compared with traditional drilling rigs, which can meet the drilling needs of complex coal seams. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the double-outlet propulsion cylinder of this utility model.

[0027] in:

[0028] 1. Main body, 1.1 Working platform, 2. Working mechanism, 2.1 Slide assembly, 2.2 Power head, 2.3 Clamp, 2.4 Double-outlet propulsion cylinder, 2.41 First cylinder, 2.42 First piston rod, 2.43 Second cylinder, 2.44 Second piston rod, 2.45 Positioning base, 2.5 Cylinder positioning slider, 2.6 Power head base, 3. Lifting cylinder, 4. Front support column, 5. Rear support column, 6. Tracked walking device, 7. Electrical control box, 8. Auxiliary oil tank, 9. Water pump, 10. Control panel, 11. Computer box. Detailed Implementation

[0029] To better understand the technical solution of this utility model, 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 this utility model, but are merely possible implementations of the technical solution of this utility model. 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

[0030] See Figures 1-2 , Figure 1 A structural schematic diagram of a long-stroke small drilling rig for coal mines is shown. As shown in the figure, this utility model of a long-stroke small drilling rig for coal mines includes a main body 1 and a working mechanism 2. Tracked walking devices 6 are fixed on both sides of the main body 1, and the tracked walking devices 6 are in contact with the ground for moving the main body 1. The main body 1 includes a main frame, and a working platform 1.1 is provided on the main frame. The working mechanism 2 is provided above the working platform 1.1. The working mechanism 2 is used to advance the drill rod. Behind the working mechanism 2 are an electrical control box 7, an auxiliary oil tank 8, a water pump 9, an operating table 10, and a computer box 11. The electrical control box 7, auxiliary oil tank 8, water pump 9, operating table 10, and computer box 11 are all mounted on the working platform 1.1.

[0031] The working platform 1.1 is equipped with a rotary deceleration mechanism, which is connected to the working mechanism 2 to achieve 360° rotation of the working mechanism 2 on the horizontal plane; a set of rotating support mechanisms are respectively provided on both sides of the working mechanism 2.

[0032] The working mechanism 2 includes a slide assembly 2.1, a power head 2.2, a clamp 2.3, a double-outlet propulsion cylinder 2.4, a cylinder positioning slider 2.5, and a power head base 2.6. The cylinder positioning slider 2.5 and the power head base 2.6 are slidably mounted on the slide assembly 2.1. The power head 2.2 is fixedly mounted on the power head base 2.6. The power head 2.2 clamps the drill rod through the clamp 2.3, which is fixed to the end of the slide assembly 2.1.

[0033] The dual-outlet propulsion cylinder 2.4 includes a first cylinder 2.41 and a second cylinder 2.43 arranged vertically in parallel. The first cylinder 2.41 and the second cylinder 2.43 are arranged in opposite directions. The first cylinder 2.41 includes a first cylinder barrel and a first piston rod 2.42. The second cylinder 2.43 includes a second cylinder barrel and a second piston rod 2.44. The opposing surfaces of the first cylinder barrel and the second cylinder barrel are welded together. A welding oil pipe is provided on the left and right sides of the first cylinder barrel and the second cylinder barrel respectively. One end of the welding oil pipe is connected to port A of the first cylinder 2.41 and the other end is connected to port A of the second cylinder 2.43. The other welding oil pipe is connected to port B of the first cylinder 2.41 and the other end is connected to port B of the second cylinder 2.43.

[0034] The first cylinder is provided with a positioning base 2.45, which is located below the oil cylinder positioning slider 2.5 and is fixedly connected to it;

[0035] The end of the first piston rod 2.42 is hinged to the carriage assembly 2.1, and the end of the second piston rod 2.44 is hinged to the power head base 2.6.

[0036] A lifting cylinder 3 is provided on each side of the end of the slide assembly 2.1. One end of the lifting cylinder 3 is set on the working platform 1.1 through a hinged connector, and the other end is connected to the slide assembly 2.1 to realize the change of the tilt angle of the working mechanism 2.

[0037] The front support column 4 is connected to each of the two front ends of the main body 1 to stabilize the front end of the vehicle. The bottom of the front support column 4 is provided with a universal support foot plate. The rear support column 5 is provided on each of the two rear ends of the main body 1. The rear support column 5 is located on both sides of the main body 1 behind the track walking device 6 to stabilize the rear end of the vehicle. The bottom of the rear support column 5 is provided with a universal support foot plate.

[0038] The tracked traveling device 6 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 via a left track connecting frame, and the right side is connected to the right tracked traveling section via 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.

[0039] Working principle:

[0040] This utility model discloses a long-stroke integrated directional drilling rig for coal mines, comprising the following components:

[0041] Carriage: The main supporting structure with internal tracks;

[0042] Dual-outlet propulsion cylinder: It is composed of two single-outlet cylinders arranged in opposite directions and welded together, with a positioning base welded onto the cylinder barrel;

[0043] Hydraulic cylinder positioning slider: It is slidably installed on the slide rail and fixedly connected to the positioning base;

[0044] Clamp: Fixed to the tail of the carriage, used to clamp the drill rod;

[0045] Power head base: Slidingly mounted on the carriage rail, hinged to one side piston rod of the double-outlet propulsion cylinder;

[0046] Power head: Fixed on the power head base, providing rotational power.

[0047] Connection relationships:

[0048] The two piston rods of the dual-outlet propulsion cylinder are hinged to the front end of the slide and the base of the power head, respectively; the positioning slider of the cylinder is fixed to the dual-outlet propulsion cylinder through the positioning base to limit its rotational torque; the base of the power head slides along the slide track, driving the power head to propel the drill rod.

[0049] Workflow:

[0050] The dual-outlet propulsion cylinder extends, pushing the power head base forward along the slide rail to drive the drill rod to drill a hole; the cylinder positioning slider slides synchronously with the cylinder, offsetting the rotational torque through the positioning base; after drilling is completed, the cylinder retracts, the power head base resets, the clamp releases the drill rod, and the cycle is completed.

[0051] This invention achieves long-stroke propulsion and high torque resistance through the coordinated design of dual-outlet propulsion cylinders and carriage tracks. The dual-outlet cylinders are arranged in opposite directions, doubling the stroke; the positioning slider cooperates with the base to effectively suppress deformation; and the adaptability to long drill pipes is improved, significantly reducing the turning radius. It is suitable for efficient directional drilling operations in the confined spaces of underground coal mines.

[0052] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A long-stroke small drilling rig for coal mines, characterized in that: It includes a main body (1) and a working mechanism (2). Tracked walking devices (6) are fixed on both sides of the main body (1). The tracked walking devices (6) are in contact with the ground and are used to move the main body (1). The main body (1) includes a main frame. A working platform (1.1) is provided on the main frame. A working mechanism (2) is provided above the working platform (1.1). The working mechanism (2) is used to push the drill rod. A rotary deceleration mechanism is provided on the working platform (1.1). The working mechanism (2) is connected through the rotary deceleration mechanism. The working mechanism (2) includes a slide assembly (2.1), a power head (2.2), a clamp (2.3), a double-outlet propulsion cylinder (2.4), a cylinder positioning slider (2.5), and a power head base (2.6). The cylinder positioning slider (2.5) and the power head base (2.6) are slidably mounted on the slide assembly (2.1). The power head (2.2) is fixedly mounted on the power head base (2.6). The power head (2.2) clamps the drill rod through the clamp (2.3), which is fixed to the end of the slide assembly (2.1). The dual-outlet propulsion cylinder (2.4) includes a first cylinder (2.41) and a second cylinder (2.43) arranged in parallel. The first cylinder (2.41) and the second cylinder (2.43) are arranged in opposite directions. The first cylinder (2.41) includes a first cylinder barrel and a first piston rod (2.42). The second cylinder (2.43) includes a second cylinder barrel and a second piston rod (2.44). The end of the first piston rod (2.42) is hinged to the carriage assembly (2.1), and the end of the second piston rod (2.44) is hinged to the power head base (2.6). The first cylinder is provided with a positioning base (2.45), which is located below the oil cylinder positioning slider (2.5) and fixedly connected to it.

2. The long-stroke small drilling rig for coal mines according to claim 1, characterized in that: The opposing surfaces of the first cylinder and the second cylinder are welded together.

3. The long-stroke small drilling rig for coal mines according to claim 1, characterized in that: The first cylinder and the second cylinder are respectively provided with a welding oil pipe on the left and right sides. One end of the welding oil pipe is connected to port A of the first cylinder (2.41) and the other end is connected to port A of the second cylinder (2.43). The other welding oil pipe is connected to port B of the first cylinder (2.41) and the other end is connected to port B of the second cylinder (2.43).

4. The long-stroke small drilling rig for coal mines according to claim 1, characterized in that: A lifting cylinder (3) is provided on each side of the end of the carriage assembly (2.1).

5. A long-stroke small drilling rig for coal mines according to claim 4, characterized in that: One end of the lifting cylinder (3) is mounted on the working platform (1.1) via a hinged connector, and the other end is connected to the slide assembly (2.1) to realize the change of the tilt angle of the working mechanism (2).

6. A long-stroke 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 front support column (4) for stabilizing the front of the vehicle. The bottom of the front support column (4) is provided with a universal support foot plate.

7. A long-stroke small drilling rig for coal mines according to claim 1, characterized in that: The main body (1) has a rear support column (5) on each side of the rear end for stabilizing the rear end of the vehicle. The bottom of the rear support column (5) is provided with a universal support foot plate.

8. A long-stroke small drilling rig for coal mines according to claim 1, characterized in that: The working mechanism (2) is equipped with an electrical control box (7), an auxiliary oil tank (8), a water pump (9), an operating table (10), and a computer box (11) at the rear. The electrical control box (7), the auxiliary oil tank (8), the water pump (9), the operating table (10), and the computer box (11) are all located on the working platform (1.1).

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