Ground emergency rescue drilling and drainage equipment

Abstract

The application discloses a ground emergency rescue drilling and draining equipment, which comprises a vehicle body, a hook is arranged at the front end of the vehicle body, a driving device is installed at the tail of the vehicle body, a drill rod assembly is connected with the driving device, a drill bit is detachably installed at the lower end of the drill rod assembly, a stabilizing mechanism is arranged at the lower part of the drill rod assembly and is spaced from the end of the drill bit close to the drill bit, and the stabilizing mechanism can increase the strength of the hole wall.

Description

Technical Field

[0001] This invention relates to the field of rescue drainage equipment technology, specifically to a ground emergency rescue drilling drainage device. Background Technology

[0002] Emergency rescue in mine accidents is a crucial part of mine safety production. When water suddenly surges into a mine, it can lead to flooding and trapping workers underground. In mine drainage rescue, drilling drainage is a very effective rescue method. However, when existing drainage equipment encounters borehole collapse during drilling drainage, backfilling and re-drilling are generally used, resulting in low drilling efficiency and reduced rescue efficiency.

[0003] Therefore, it is necessary to provide a ground emergency rescue drilling and drainage device to solve the problems mentioned in the background art. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a ground emergency rescue drilling and drainage device, comprising: a vehicle body with a hook at its front end, a drive device installed at the rear of the vehicle body, a drill rod assembly connected to the drive device, a drill bit detachably mounted at the lower end of the drill rod assembly, and a stabilizing mechanism spaced apart at the lower end of the drill rod assembly near the drill bit, the stabilizing mechanism being able to increase the strength of the borehole wall.

[0005] As a preferred embodiment of the present invention, the driving device includes:

[0006] A fixed frame is installed at the rear of the carriage, and a gantry frame is vertically fixed to the upper end of the fixed frame;

[0007] A lifting assembly is installed inside the gantry frame, and a base is installed at the output end of the lifting assembly;

[0008] An electric motor is mounted on the upper end of the drill pipe assembly and is fixedly connected to the base; and a pump unit is located on the side of the mounting frame.

[0009] As a preferred embodiment of the present invention, the drill pipe assembly includes:

[0010] The rod body has a through hole inside, which is connected to the vehicle-mounted liquid tank through a pipe. An outer cylinder is coaxially and sealed on the outside of the rod body, and a reinforcing agent is pre-installed between the outer cylinder and the rod body.

[0011] An adjusting ring is located directly below the outer cylinder. It is sealed to the lower end of the outer cylinder through a flexible cylinder. The lower end of the adjusting ring is provided with multiple sliding grooves evenly distributed radially.

[0012] A tapered sleeve is fixedly disposed at a distance from the drill bit at the lower part of the rod body, with the large end of the tapered sleeve facing downwards. Multiple limiting grooves are vertically opened on the outer periphery of the tapered sleeve corresponding to the sliding groove.

[0013] A stabilizing mechanism, comprising multiple such mechanisms arranged around the outer side of the conical sleeve corresponding to the limiting groove, and capable of sliding up and down along the outer conical surface of the conical sleeve, each stabilizing mechanism having a limiting block at its upper end, the limiting block engaging with the sliding groove for limiting movement; and

[0014] Two sets of telescopic rods are symmetrically arranged circumferentially inside the flexible cylinder, and both ends of the telescopic rods are fixedly connected to the outer cylinder and the adjusting ring, respectively.

[0015] As a preferred embodiment of the present invention, the flexible cylinder is further provided with a plurality of telescopic guide tubes in the inner circumferential direction. The telescopic guide tubes are connected to the outer cylinder and a solenoid valve is provided at the connection point. The lower end of the telescopic guide tubes is connected to the interior of the stabilization mechanism through an adjustment ring.

[0016] As a preferred embodiment of the present invention, each of the stabilization mechanisms includes:

[0017] The support body has an inner surface that is a conical surface with the same taper as the conical sleeve and the two slide in a guiding fit. One side of the support body along the rotation direction of the rod body is an arc-shaped compaction surface. Multiple discharge holes communicating with the telescopic conduit are provided on the opposite surface of the compaction surface. Multiple liquid holes are also provided through the upper and lower guide surfaces of the support body.

[0018] As a preferred embodiment of the present invention, the spacing between adjacent supports gradually decreases from bottom to top.

[0019] As a preferred embodiment of the present invention, a rotating body is provided at the lower end of the rod, the rotating body is threadedly connected to the drill bit, and a pressure sensing unit is provided inside the rotating body.

[0020] As a preferred embodiment of the present invention, an annular groove is coaxially formed inside the rotating body, and a filter cylinder is slidably arranged in the annular groove, with the bottom end of the filter cylinder being fixedly connected to the upper end of the drill bit.

[0021] Compared with the prior art, the present invention provides a ground emergency rescue drilling and drainage device, which has the following beneficial effects:

[0022] In this invention, the flow gap inside the borehole is adjustable by using a conical sleeve, a stabilizing mechanism, and a telescopic rod. The soil texture is determined by monitoring the drilling resistance. When the borehole wall needs to be reinforced, a reinforcing agent is output, and the flow gap is reduced so that the drill cuttings and reinforcing agent are evenly filled and compacted onto the borehole wall under the rotation of the stabilizing mechanism. This enhances the strength of the borehole wall, prevents borehole collapse accidents, and improves rescue efficiency. On the one hand, it reduces the amount of debris discharged, which facilitates subsequent cleaning, and on the other hand, it reduces the consumption of reinforcing agent, saving costs.

[0023] By designing the rotating body and filter cylinder, the drill bit can automatically detach when it reverses, causing the filter cylinder to slide down and out, facilitating the drainage of water accumulated in the tunnel and improving rescue efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a ground emergency rescue drilling and drainage device;

[0025] Figure 2 This is a schematic diagram of the drive device for a ground emergency rescue drilling and drainage equipment.

[0026] Figure 3 A schematic diagram of the rotating cross-sectional structure of a drill rod assembly for a ground emergency rescue drilling and drainage equipment.

[0027] Figure 4 A schematic diagram of a stabilization mechanism for a ground emergency rescue drilling and drainage equipment.

[0028] Figure 5 This is a schematic diagram of the rotating cross-sectional structure of a ground emergency rescue drilling and drainage device;

[0029] In the diagram: 1. Vehicle body; 2. Drive unit; 3. Drill rod assembly; 4. Drill bit; 21. Fixing frame; 22. Gantry frame; 23. Lifting assembly; 24. Base; 25. Motor; 26. Pump assembly; 31. Rod body; 32. Conical sleeve; 33. Stabilizing mechanism; 34. Adjusting ring; 35. Outer cylinder; 36. Flexible cylinder; 37. Telescopic rod; 38. Telescopic guide tube; 39. Rotating body; 311. Through hole; 321. Limiting groove; 331. Support body; 332. Compacted surface; 333. Discharge hole; 334. Liquid hole; 391. Annular groove; 392. Filter cartridge. Detailed Implementation

[0030] Please see Figure 1-5 This invention provides a ground emergency rescue drilling and drainage device, comprising:

[0031] The vehicle body 1 has a hook at its front end. A drive device 2 is installed at the rear of the vehicle body 1. The drive device 2 is connected to a drill rod assembly 3. A drill bit 4 is detachably installed at the lower end of the drill rod assembly 3. A stabilizing mechanism 33 is provided at intervals at the lower part of the drill rod assembly 3 near the drill bit 4. The stabilizing mechanism 33 can increase the strength of the hole wall.

[0032] It should be explained that during implementation, the vehicle body 1 is transported to the target location, and the drill rod assembly 3 is started to rotate and drive the drill bit 4 to carry out drilling operations. When encountering soft geological conditions, the stabilization mechanism 33 reinforces the hole wall to prevent hole collapse and affect rescue efficiency.

[0033] In this embodiment, the driving device 2 includes:

[0034] A fixing frame 21 is installed at the rear of the carriage, and a gantry frame 22 is vertically fixed at the upper end of the fixing frame 21.

[0035] The lifting assembly 23 is installed inside the gantry frame 22, and a base 24 is installed at the output end of the lifting assembly 23;

[0036] Motor 25 is mounted on the upper end of the drill pipe assembly 3 and is fixedly connected to the base 24; and

[0037] Pump assembly 26 is located on the side of the fixed frame 21.

[0038] In other words, the drive device 2 can drive the drill rod assembly 3 to perform reciprocating lifting and lowering movements, which facilitates drilling and allows the drill rod assembly 3 to be lengthened to meet the drilling of drainage holes of different depths.

[0039] In this embodiment, the drill pipe assembly 3 includes:

[0040] The rod body 31 has a through hole 311 inside, which is connected to the vehicle liquid tank through a water inlet pipe. An outer cylinder 35 is coaxially and sealed on the outside of the rod body 31, and a reinforcing agent is pre-installed between the outer cylinder 35 and the rod body 31.

[0041] The adjusting ring 34 is located directly below the outer cylinder 35. It is sealed to the lower end of the outer cylinder 35 through the flexible cylinder 36. The lower end of the adjusting ring 34 is provided with multiple sliding grooves evenly distributed radially.

[0042] A tapered sleeve 32 is fixedly disposed at the lower part of the rod body 31 and spaced apart from the drill bit 4, with the large end of the tapered sleeve 32 facing downwards. Multiple limiting grooves 321 are vertically opened on the outer periphery of the tapered sleeve 32 corresponding to the sliding groove.

[0043] A plurality of stabilizing mechanisms 33 are arranged around the outer side of the conical sleeve 32, corresponding to the limiting groove 321, and can slide up and down along the outer conical surface of the conical sleeve 32. Each stabilizing mechanism 33 has a limiting block at its upper end, and the limiting block slides and limits the movement of the groove.

[0044] Two sets of telescopic rods 37 are symmetrically arranged circumferentially inside the flexible cylinder 36, and the two ends of the telescopic rods 37 are respectively fixedly connected to the outer cylinder 35 and the adjusting ring 34.

[0045] It should be explained that by extending and retracting the telescopic rod 37, the stabilizing mechanisms 33 are controlled to slide along the conical sleeve 32, which facilitates the adjustment of the flow gap in the borehole and thus controls the amount of drill cuttings discharged.

[0046] In this embodiment, the flexible cylinder 36 is also provided with a plurality of telescopic guide tubes 38 in the inner circumference. The telescopic guide tubes 38 are connected to the outer cylinder 35, and a solenoid valve is provided at the connection point. The lower end of the telescopic guide tube 38 is connected to the inside of the stabilization mechanism 33 through an adjusting ring 34.

[0047] In other words, when it is necessary to strengthen the hole wall, the reinforcing agent is delivered to the stabilizing mechanism 33 by the built-in micro pump, which facilitates the strengthening of the hole wall.

[0048] In this embodiment, each of the stabilization mechanisms 33 includes:

[0049] The support body 331 has an inner surface that is a conical surface with the same taper as the conical sleeve 32 and the two slide and guide each other. One side of the support body 331 along the rotation direction of the rod 31 is an arc-shaped compaction surface 332. Multiple discharge holes 333 communicating with the telescopic conduit 38 are provided on the opposite surface of the compaction surface 332. Multiple liquid holes 334 are also provided through the upper and lower guide surfaces of the support body 331.

[0050] It should be explained that when encountering soft soil layers, the telescopic rod 37 extends to reduce the flow gap inside the borehole, and at the same time appropriately reduces the pressure of the flushing fluid in the through hole 311, reducing the speed and discharge volume of drill cuttings. Under the rotation of the support body 331, more drill cuttings are filled and compacted on the borehole wall. Meanwhile, under the action of the internal micro pump, the reinforcing agent is discharged and also filled and compacted on the borehole wall. On the one hand, the discharge volume of debris is reduced to facilitate subsequent cleaning, and on the other hand, the consumption of reinforcing agent is reduced to save costs. A pressure sensor is installed on the outer side of the support body 331 to facilitate monitoring of the reinforcement status. The liquid hole 334 is designed to facilitate the flow of flushing fluid.

[0051] When the soil hardness is normal, the telescopic rod 37 retracts to increase the flow clearance in the borehole, appropriately increase the flushing fluid pressure, accelerate the discharge of drill cuttings, and improve drilling efficiency.

[0052] In this embodiment, the spacing between adjacent supports 331 gradually decreases from bottom to top. This facilitates the adjustment of the flow clearance within the borehole.

[0053] In this embodiment, a rotating body 39 is provided at the lower end of the rod 31. The rotating body 39 is threadedly connected to the drill bit 4, and a pressure sensing unit is provided inside the rotating body 39.

[0054] It should be explained that the drilling resistance of drill bit 4 is monitored by the pressure sensing unit, and the geological conditions are judged by the resistance level to determine whether the borehole wall needs to be reinforced and stabilized. The threaded connection allows drill bit 4 to be automatically detached by reversing motor 25, so that drainage work can be carried out directly, improving rescue efficiency.

[0055] In this embodiment, an annular groove 391 is coaxially formed inside the rotating body 39, and a filter cylinder 392 is slidably disposed in the annular groove 391. The bottom end of the filter cylinder 392 is fixedly connected to the upper end of the drill bit 4.

[0056] In other words, when the borehole reaches the predetermined depth (the pressure sensing unit reading approaches zero), the drill bit 4 is controlled to extend into the water, and the water inlet pipe of the rod 31 is replaced with a drainage pipe. The motor 25 is driven to reverse so that the drill bit 4 automatically falls off. Under its gravity, the filter cartridge 392 slides out and is suspended by the drill bit 4, which facilitates the filtration of the water to be drained. Finally, the drainage operation is carried out under the action of the pump group 26.

[0057] In practice, the vehicle body is transported to the target location, the drill rod assembly is started to drive the drill bit to carry out drilling operations. When encountering relatively soft geological conditions, the stabilization mechanism reinforces the hole wall to prevent hole collapse from affecting rescue efficiency. After drilling is completed, the control motor reverses to make the drill bit automatically detach and suspend for drainage operations.

[0058] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ground emergency rescue drilling and drainage device, characterized in that: include: The vehicle body (1) has a hook at its front end. A drive device (2) is installed at the rear of the vehicle body (1). The drive device (2) is connected to a drill rod assembly (3). A drill bit (4) is detachably installed at the lower end of the drill rod assembly (3). A stabilizing mechanism (33) is provided at intervals at the lower end of the drill rod assembly (3) near the drill bit (4). The stabilizing mechanism (33) can increase the strength of the hole wall. The drill pipe assembly (3) includes: The rod (31) has a through hole (311) inside, which is connected to the vehicle-mounted liquid tank through a pipe. An outer cylinder (35) is coaxially spaced and sealed on the outside of the rod (31), and a reinforcing agent is pre-installed between the outer cylinder (35) and the rod (31). An adjusting ring (34) is located directly below the outer cylinder (35). It is sealed to the lower end of the outer cylinder (35) through a flexible cylinder (36). The lower end of the adjusting ring (34) is provided with multiple sliding grooves evenly arranged radially. A tapered sleeve (32) is fixedly installed at the lower part of the rod body (31) and spaced apart from the drill bit (4), with the large end of the tapered sleeve (32) facing downwards. Multiple limiting grooves (321) are vertically opened on the outer periphery of the tapered sleeve (32) corresponding to the sliding groove. The stabilizing mechanism (33) is provided in multiple ways around the outside of the conical sleeve (32) and corresponding to the limiting groove (321), and can slide up and down along the outer conical surface of the conical sleeve (32). Each stabilizing mechanism (33) has a limiting block at its upper end, and the limiting block is in sliding limiting cooperation with the sliding groove. Two sets of telescopic rods (37) are symmetrically arranged along the circumference inside the flexible cylinder (36), and the two ends of the telescopic rods (37) are respectively fixedly connected to the outer cylinder (35) and the adjusting ring (34); The flexible cylinder (36) is also provided with a plurality of telescopic guide tubes (38) in the inner circumference. The telescopic guide tubes (38) are connected to the outer cylinder (35), and a solenoid valve is provided at the connection point. The lower end of the telescopic guide tubes (38) is connected to the inside of the stabilizing mechanism (33) through an adjusting ring (34). Each of the aforementioned stabilization mechanisms (33) includes: The support body (331) has an inner surface that is a tapered surface with the same taper as the tapered sleeve (32) and the two slide in a guide fit. The support body (331) has an arc-shaped compaction surface (332) on one side along the rotation direction of the rod (31). The opposite surface of the compaction surface (332) is provided with a plurality of discharge holes (333) that communicate with the telescopic conduit (38). The upper and lower guide surfaces of the support body (331) are also provided with a plurality of liquid holes (334). By extending and retracting the telescopic rod (37), the stabilizing mechanisms (33) are controlled to slide along the conical sleeve (32) to adjust the flow gap in the borehole and thus control the amount of drill cuttings discharged. The extension of the telescopic rod (37) reduces the flow gap in the borehole and at the same time appropriately reduces the pressure of the flushing fluid in the through hole (311), reducing the speed and discharge of drill cuttings. Under the rotation of the support body (331), more drill cuttings are filled and compacted on the borehole wall.

2. The ground emergency rescue drilling and drainage equipment according to claim 1, characterized in that: The driving device (2) includes: A fixed frame (21) is installed at the rear of the carriage, and a gantry frame (22) is vertically fixed at the upper end of the fixed frame (21); The lifting assembly (23) is installed inside the gantry frame (22), and the output end of the lifting assembly (23) is equipped with a base (24); A motor (25) is mounted on the upper end of the drill pipe assembly (3) and is fixedly connected to the base (24); and The pump unit (26) is located on the side of the fixed frame (21).

3. The ground emergency rescue drilling and drainage equipment according to claim 1, characterized in that: The spacing between adjacent supports (331) gradually decreases from bottom to top.

4. A ground emergency rescue drilling and drainage device according to claim 1, characterized in that: The lower end of the rod (31) is provided with a rotating body (39), which is threadedly connected to the drill bit (4), and a pressure sensing unit is provided inside the rotating body (39).

5. A ground emergency rescue drilling and drainage device according to claim 4, characterized in that: The rotating body (39) has an annular groove (391) coaxially formed inside. A filter cylinder (392) is slidably arranged in the annular groove (391), and the bottom end of the filter cylinder (392) is fixedly connected to the upper end of the drill bit (4).

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