Radially symmetrical hydraulic slotting device in deep rock drilling

Abstract

A kind of rock deep borehole radial symmetry hydraulic slit cutting device, including bridge type support, support cylinder seat, reversing air pipe 1-2a, reversing valve A, reversing valve B, reversing valve C, cylinder bearing, reversing air pipe 2-2a, telescopic adjusting cylinder, reversing valve D, reversing air pipe 4-2a, angle adjusting cylinder, reversing air pipe 3-2a, connecting body, air motor, gearbox, high-pressure rubber tube, radial symmetry cutting nozzle, longitudinal support square tube, cylinder body, support cylinder, rubber tube storage wheel, emergency unloading valve, transverse support square tube, connecting tee, main shaft bearing, rotary joint, storage wheel hollow shaft, cylinder body / longitudinal support square tube is fixed on support cylinder, support cylinder is welded on bridge type support 1 by support cylinder seat;Air motor is installed on gearbox, gearbox is fixed on telescopic adjusting cylinder by connecting body, telescopic adjusting cylinder is fixed on transverse support square tube by cylinder bearing.The utility model structure is compact, and it is convenient to move.

Description

Technical Field

[0001] This utility model relates to a radially symmetrical hydraulic cutting device for deep rock boreholes. Specifically, it is a device that uses a high-pressure hose with a certain hardness to drag a cutting nozzle into a rock borehole, enabling radially symmetrical hydraulic cutting in long rock boreholes. Background Technology

[0002] Currently, to address the problem of large roadway variations and control difficulties caused by the overhanging roof in the goaf area of ​​coal pillars in underground coal mines, hydraulic fracturing and roof cutting depressurization technology has been proposed. The specific solution involves drilling a deep hole in the roof of the underground roadway using a hydraulic drilling rig, and then injecting high-pressure water into the borehole to fracture the roof. This fracturing method has no directional direction. However, hydraulic fracturing in underground coal mines requires directional fracturing, which necessitates creating two radially extending water line slots in the deep borehole to guide the water flow and achieve directional fracturing. However, there is currently no device that can create radially symmetrical hydraulic slots in underground boreholes to solve this problem. Summary of the Invention

[0003] This utility model addresses the problem of "currently, in coal mines, the large variables and difficulty in controlling the roadway caused by the overhanging roof in the goaf area of ​​the goaf-side roadway are addressed by hydraulic fracturing and roof cutting for pressure relief. The specific solution involves a hydraulic drilling rig drilling a deep hole in the roof of the underground roadway, and then injecting high-pressure water into the borehole to fracture the roof. This fracturing method has no directionality in all directions. However, hydraulic fracturing in underground goaf-side roadways requires directional fracturing, which necessitates the radially extending water line slots in the deep borehole to guide the water flow and achieve directional fracturing. However, there is currently no device that can radially symmetrically hydraulically cut slots in underground boreholes to solve this problem." Therefore, this utility model proposes a radially symmetrical hydraulic cutting device for deep rock boreholes.

[0004] The objective of this utility model is achieved through the following technical solution: A radially symmetrical hydraulic cutting device for deep rock boreholes includes a bridge-type support 1, a supporting cylinder seat 2, a reversing air pipe 1-2a3, a reversing valve A4, a reversing valve B5, a reversing valve C6, a cylinder bearing 7, a reversing air pipe 2-2a8, a telescopic adjustment cylinder 9, a reversing valve D10, a reversing air pipe 4-2a11, an angle adjustment cylinder 12, a reversing air pipe 3-2a13, a connector 14, an air motor 15, a gearbox 16, a high-pressure hose 17, a radially symmetrical cutting nozzle 18, a longitudinally supporting square tube 19, a cylinder body 20, and a supporting cylinder 21. The components include: hose reel 22, emergency unloading valve 23, transverse support square tube 24, connecting tee 25, main shaft bearing 26, rotary joint 27, and hollow shaft 28 of the reel; characterized in that: the cylinder body 20 / transverse support square tube 24 is fixed on the support cylinder 21, and the support cylinder 21 is welded to the bridge bracket 1 via the support cylinder seat 2; the air motor 15 is mounted on the gearbox 16, and the gearbox 16 is fixed to the telescopic adjustment cylinder 9 via the connector 14, and the telescopic adjustment cylinder 9 is fixed to the transverse support square tube 24 via the cylinder bearing 7. The degree-adjusting cylinder 12 is connected between the telescopic adjusting cylinder 9 and the longitudinal support square tube 19. The reversing valve D10 is fixed to the longitudinal support square tube 19, which is welded to the transverse support square tube 24. The reversing valves A4, B5, and C6 are sequentially fixed to the transverse support square tube 24. Reversing air pipes 1-2a3 are connected between the reversing valve A4 and the support cylinder 21. Reversing air pipes 2-2a8 are connected between the reversing valve B5 and the telescopic adjusting cylinder 9. Reversing air pipes 3-2a13 are connected between the reversing valve C6 and the air motor 15. Between them, the reversing air pipe 4-2a11 is connected between the reversing valve D10 and the angle adjusting cylinder 12; the radially symmetrical cutting nozzle 18 is connected to the high-pressure hose 17, which is wound around the hose receiving wheel 22 through the gearbox 16, and then connected to the hollow shaft 28 of the receiving wheel through the connecting tee 25; the rotary joint 27 is connected to the hollow shaft 28 of the receiving wheel through the emergency unloading valve 23, and the hollow shaft 28 of the receiving wheel is fixed to the transverse support square tube 24 through the main shaft bearing 26, forming a radially symmetrical hydraulic cutting device for deep rock drilling.

[0005] To further facilitate control and operation, an emergency unloading valve 23 is installed on the transverse support square tube 24, which serves as an emergency unloading mechanism for the hydraulic system in case of emergencies.

[0006] This invention has the following advantages over existing hydraulic slitting devices: 1. Automatic push-and-retract high-pressure hose function: The equipment is equipped with an air motor 15 and a hose retractor 22. The forward and reverse rotation of the motor 15 is controlled by the reversing valve C6 to control the forward and backward movement of the high-pressure hose 17.

[0007] 2. It has a radial symmetrical cutting function: a radial symmetrical cutting nozzle 18 is installed on the high-pressure hose 17. The reciprocating motion of the high-pressure hose 17 in the borehole can achieve radial symmetrical cutting of the borehole.

[0008] 3. Adjustable cutting angle: An angle adjustment cylinder 12 is installed between the telescopic adjustment cylinder 9 and the longitudinal support square tube 19, which can realize the adjustment of the cutting angle.

[0009] 4. Simple structure: A radially symmetrical hydraulic cutting device for deep rock drilling has a compact structure, is easy to move, has complete specifications and models, and is easy to promote and apply. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0011] Figure 1 and Figure 2 This is a structural diagram of the present invention.

[0012] Figure 1 This is a front view schematic diagram of the present invention: Figure 2 This is a left-side view of the present invention.

[0013] Figure 1 middle: Bridge-type bracket 1, support cylinder seat 2, reversing air pipe 1-2a3, reversing valve A4, reversing valve B5, reversing valve C6, cylinder bearing 7, reversing air pipe 2-2a8, telescopic adjustment cylinder 9, reversing valve D10, reversing air pipe 4-2a11, angle adjustment cylinder 12, reversing air pipe 3-2a13, connector 14, air motor 15, gearbox 16, high-pressure hose 17, radially symmetrical cutting nozzle 18, longitudinal support square tube 19, cylinder body 20, support cylinder 21, hose reel 22, emergency unloading valve 23, lateral support square tube 24.

[0014] Figure 2 middle: Air motor 15, gearbox 16, support cylinder 21, connecting tee 25, main shaft bearing 26, rotary joint 27, hollow shaft of storage wheel 28. Detailed Implementation

[0015] A radially symmetrical hydraulic cutting device for deep rock boreholes includes a bridge-type support 1, a supporting cylinder seat 2, a reversing air pipe 1-2a3, a reversing valve A4, a reversing valve B5, a reversing valve C6, a cylinder bearing 7, a reversing air pipe 2-2a8, a telescopic adjustment cylinder 9, a reversing valve D10, a reversing air pipe 4-2a11, an angle adjustment cylinder 12, a reversing air pipe 3-2a13, a connector 14, an air motor 15, a gearbox 16, a high-pressure hose 17, a radially symmetrical cutting nozzle 18, a longitudinal support square tube 19, a cylinder body 20, a supporting cylinder 21, a hose reel 22, an emergency unloading valve 23, and a transverse support square tube 24. 4. Connecting tee 25, main shaft bearing 26, rotary joint 27, and hollow shaft of receiving wheel 28; characterized in that: the cylinder body 20 / lateral support square tube 24 is fixed on the support cylinder 21, and the support cylinder 21 is welded to the bridge bracket 1 through the support cylinder seat 2; the air motor 15 is installed on the gearbox 16, the gearbox 16 is fixed to the telescopic adjustment cylinder 9 through the connecting body 14, the telescopic adjustment cylinder 9 is fixed to the lateral support square tube 24 through the cylinder bearing 7, the angle adjustment cylinder 12 is connected between the telescopic adjustment cylinder 9 / longitudinal support square tube 19, and the reversing valve D10 is fixed on the longitudinal support square tube 19. The longitudinal support square tube 19 is welded to the transverse support square tube 24; the reversing valves A4, B5, and C6 are sequentially fixed to the transverse support square tube 24; the reversing air pipes 1-2a3 are connected between the reversing valve A4 and the support cylinder 21; the reversing air pipes 2-2a8 are connected between the reversing valve B5 and the telescopic adjustment cylinder 9; the reversing air pipes 3-2a13 are connected between the reversing valve C6 and the air motor 15; and the reversing air pipes 4-2a11 are connected between the reversing valve D10 and the angle adjustment cylinder. Between cylinders 12; the radially symmetrical cutting nozzle 18 is connected to the high-pressure hose 17, the high-pressure hose 17 is wound around the hose receiving wheel 22 through the gearbox 16, and then connected to the hollow shaft 28 of the receiving wheel through the connecting tee 25; the rotary joint 27 is connected to the hollow shaft 28 of the receiving wheel through the emergency unloading valve 23, and the hollow shaft 28 of the receiving wheel is fixed to the transverse support square tube 24 through the main shaft bearing 26, forming a method for manufacturing a radially symmetrical hydraulic cutting device in deep rock drilling.

[0016] During operation, the radially symmetrical hydraulic slitting device for deep rock drilling is characterized by the following: Directional valve A4 controls the lifting and lowering of the cylinder body 20 on the support cylinder 21 via directional air pipe 1-2a3 to stabilize the bridge-type support 1 and the entire device; directional valve B5 controls the extension and retraction height of the telescopic adjustment cylinder 9 via directional air pipe 2-2a8 to achieve height changes in the gearbox 16; directional valve C6 controls the operating speed and forward / reverse rotation of the air motor 15 via directional air pipe 3-2a13; and directional valve D10 controls the length of the angle adjustment cylinder 12 via directional air pipe 4-2a11 to adjust the angle of the telescopic adjustment cylinder 9. The air motor 15 drives the gearbox 16 to rotate synchronously. The gearbox 16 drags the high-pressure hose 17 and the radially symmetrical cutting nozzle 18 forward and backward in the borehole. The forward and backward movement of the high-pressure hose 17 drives the hose receiving wheel 22 to rotate in both directions to transport and receive the high-pressure hose 17. The high-pressure water is supplied to the radially symmetrical cutting nozzle 18 through the rotary joint 27, the emergency unloading valve 23, the hollow shaft of the receiving wheel 28, the connecting tee 25, and the high-pressure hose 17 in sequence. The high-pressure water forms a high-speed water jet through the radially symmetrical cutting nozzle 18, which performs radially symmetrical cutting in the borehole, thus serving as a radially symmetrical hydraulic cutting device in deep rock drilling.

[0017] When the machine stops working, the gearbox 16 pulls the high-pressure hose 17 to the hose receiving wheel 22, closes all reversing valves, cleans the entire device with water, and places it in a ventilated and dry place.

[0018] Practice has proven that the radially symmetrical hydraulic slitting device for deep rock drilling designed according to the above implementation plan can be configured with cutting pressures of 45MPa, 50MPa, and 55MPa; and cutting drilling depths of 15m, 25m, 35m, and 45m. The device is fully functional, operates smoothly, is flexible in adjustment, safe and reliable, and is easy to promote.

Claims

1. A radially symmetrical hydraulic cutting device for deep rock drilling, comprising a bridge-type support (1), a supporting cylinder seat (2), a reversing air pipe 1-2a (3), a reversing valve A (4), a reversing valve B (5), a reversing valve C (6), a cylinder bearing (7), a reversing air pipe 2-2a (8), a telescopic adjustment cylinder (9), a reversing valve D (10), a reversing air pipe 4-2a (11), an angle adjustment cylinder (12), a reversing air pipe 3-2a (13), a connector (14), an air motor (15), a gearbox (16), a high-pressure hose (17), a radially symmetrical cutting nozzle (18), a longitudinal supporting square tube (19), a cylinder body (20), a supporting cylinder (21), a hose receiving wheel (22), an emergency unloading valve (23), a transverse supporting square tube (24), a connecting tee (25), a main shaft bearing (26), a rotary joint (27), and a hollow shaft of the receiving wheel (28); characterized in that: The cylinder body (20) / transverse support square tube (24) is fixed on the support cylinder (21), and the support cylinder (21) is welded to the bridge bracket (1) through the support cylinder seat (2); the air motor (15) is installed on the gearbox (16), and the gearbox (16) is fixed on the telescopic adjustment cylinder (9) through the connector (14). The telescopic adjustment cylinder (9) is fixed on the transverse support square tube (24) through the cylinder bearing (7). The angle adjustment cylinder (12) is connected between the telescopic adjustment cylinder (9) / longitudinal support square tube (19). The reversing valve D (10) is fixed on the longitudinal support square tube (19). The longitudinal support square tube (19) is welded to the transverse support square tube (24); the reversing valves A (4), B (5), and C (6) are fixed to the transverse support square tube (24) in sequence; the reversing air pipes 1-2a (3) are connected between the reversing valve A (4) and the support cylinder (21); the reversing air pipes 2-2a (8) are connected between the reversing valve B (5) and the telescopic adjustment cylinder (9); the reversing air pipes 3-2a (13) are connected between the reversing valve C (6) and the air motor (15); and the reversing air pipes 4-2a (11) are connected to the reversing valve D (10). / Angle adjustment cylinder (12) between; the radially symmetrical cutting nozzle (18) is connected to the high-pressure hose (17), the high-pressure hose (17) is wound around the hose receiving wheel (22) through the gearbox (16), and then connected to the hollow shaft (28) of the receiving wheel through the connecting tee (25); the rotary joint (27) is connected to the hollow shaft (28) of the receiving wheel through the emergency unloading valve (23), and the hollow shaft (28) of the receiving wheel is fixed on the transverse support square tube (24) through the main shaft bearing (26), forming a radially symmetrical hydraulic cutting device in deep rock drilling.

2. The radially symmetrical hydraulic slotting device for deep rock boreholes according to claim 1, characterized in that: High-pressure water is supplied to the radially symmetrical cutting nozzle (18) through the rotary joint (27), emergency unloading valve (23), hollow shaft of the receiving wheel (28), connecting tee (25), and high-pressure hose (17) in sequence. The high-pressure water forms a high-speed water jet through the radially symmetrical cutting nozzle (18) and performs radially symmetrical cutting in the borehole, playing the role of a radially symmetrical hydraulic cutting device in deep rock boreholes.

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