A drilling head structure and in-situ leaching construction drilling platform

Abstract

The present invention belongs to the technical field of equipment for geological exploration, and specifically relates to a drill head structure and an in-situ leaching drilling platform, comprising a first sprocket assembly; a second sprocket assembly; a drive device, the output end of which is coaxially connected to the input shaft of the second sprocket assembly; a chain disposed between the first sprocket assembly and the second sprocket assembly for transmitting the motion of the second sprocket assembly to the first sprocket assembly; a shoulder beam assembly connected to the chain; and a drilling rig disposed on the shoulder beam assembly. The present invention can complete a pressurized drilling process within 200m when drilling a hole, and does not require a rod-turning operation when drilling a 9m drill rod. This not only improves the hole-making rate and avoids quality accidents such as hole tilting caused by multiple rod-turning, but also reduces auxiliary construction time and improves construction efficiency. It is highly practical and worthy of promotion.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration equipment, and in particular relates to a drilling head structure and an in-situ leaching construction drilling platform. Background Art

[0002] At present, the drilling platforms used in in-situ leaching uranium exploration are divided into two types in terms of form: one is a trailer-type drilling platform, and the other is a ground-type drilling platform. One type places the drilling platform on a trailer, and the other type places the drilling platform on the ground.

[0003] A ground-based drilling platform typically consists of a vertical-axis drilling rig, a drilling tower, a tower base, and inclined outriggers. Components such as mud pumps, mixers, and generators are placed outside the platform. Once all components are in place, the tower base is assembled first. The vertical-axis drilling rig is then bolted to the base. The lower end of the drilling tower is mounted to the base using hinged supports, and the inclined outriggers are mounted on one side of the tower and the other side of the base using hinged supports. After the components are transported to the construction site in batches, the ground is leveled at the desired hole location, the tower base is assembled, and the drilling rig is installed on the tower base. The tower body is typically divided into two or three sections, depending on the required height, and bolted together to form a single unit. The tower body is then erected mechanically or by direct lifting using a truck crane. Components such as the inclined outriggers, second-tier platform, and vertical support brackets are then installed. After adjusting the desired angle, the drilling tower is complete. When construction is complete and the tower needs to be lowered, the above steps are reversed to complete the tower lowering, disassembly, assembly, and transportation processes.

[0004] A trailer-mounted drilling platform generally consists of a trailer platform, a drilling rig, a tower, and a rig cylinder. The tires and leaf springs of the three axles are mounted beneath the trailer platform. The drilling rig, mixer, and mud pump are mounted on the trailer platform. The lower and middle ends of the tower are hingedly mounted to the rig support, which is then secured to the trailer platform. The rig cylinder is hingedly mounted on one side of the tower and the other side of the trailer platform. All components are integrally connected and mounted on the trailer chassis, eliminating the need for on-site installation. The ground is leveled at the desired drilling location, and the rig cylinder is extended to lift the tower. Once the rig is adjusted to the desired angle, the rig is operated. The rig cylinder retracts to lower the tower.

[0005] However, at present, both forms of drilling platforms have defects:

[0006] The floor-type drilling platform relies on the feed cylinder of the vertical spindle drill for pressurized drilling. Each feed stroke is relatively short, and a single feed stroke generally does not exceed 800mm. Often, a 9-meter drill rod needs to be reversed more than ten times to complete the drilling construction of one drill rod. Multiple reverses will cause the hole to be tilted, resulting in poor positioning accuracy of the drill hole. The trailer-type drilling platform relies on the deadweight of the drill rod for pressurized drilling, which cannot solve the problem of pressurized drilling operations within 200m at the beginning of in-situ leaching uranium mine construction. Summary of the Invention

[0007] In view of this, the present invention provides a drilling head structure and an in-situ leaching construction drilling platform to solve the problems in the prior art of short feeding stroke of ground-based drilling platforms, multiple rod flipping causing hole tilt, and trailer-type drilling platforms relying on the deadweight of the drill rod for pressurized drilling, which cannot solve the technical problem of pressurized drilling operations within the initial 200m during in-situ leaching of uranium mines.

[0008] The technical solution of the present invention is:

[0009] A drilling probe structure, comprising:

[0010] a first sprocket assembly;

[0011] a second sprocket assembly;

[0012] A driving device, the output end of which is coaxially connected to the input shaft of the second sprocket assembly;

[0013] a chain disposed between the first sprocket assembly and the second sprocket assembly for transmitting motion on the second sprocket assembly to the first sprocket assembly;

[0014] a shoulder pole beam assembly connected to the chain;

[0015] The drilling rig is arranged on the shoulder pole beam assembly.

[0016] Preferably, the first sprocket assembly includes a first support and a second support arranged at intervals, a third support is arranged between the first support and the second support, a first rotating shaft passes through the first support, the second support and the third support, a first sprocket with a chain wrapped around it is arranged between the first support and the third support, the first sprocket is fixed on the first rotating shaft, a second sprocket with a chain wrapped around it is arranged between the second support and the third support, and the second sprocket is fixed on the first rotating shaft.

[0017] Preferably, the second sprocket assembly includes a fourth support and a fifth support arranged at intervals, a sixth support is arranged between the fourth support and the fifth support, the second rotating shaft is passed through the fourth support, the fifth support and the sixth support, a third sprocket with a chain wrapped around it is arranged between the fourth support and the sixth support, the third sprocket is fixed on the second rotating shaft, a fourth sprocket with a chain wrapped around it is arranged between the fifth support and the sixth support, the fourth sprocket is fixed on the second rotating shaft, and one end of the second rotating shaft is coaxially fixed to the output end of the driving device.

[0018] Preferably, the shoulder beam assembly includes a box body, and two connecting structures for connecting to the chain are symmetrically arranged on one side of the box body. A drill rod connecting assembly for connecting the square active drill rod of the drilling rig is arranged between the two connecting structures, and the drill rod connecting assembly is connected to the box body.

[0019] Preferably, the drill pipe connection assembly includes:

[0020] a cylinder body, detachably connected to the box body;

[0021] A reducing adapter is provided in the cylinder body for connecting a square active drill rod. The reducing adapter includes a circular tube, the outer ring of the circular tube has an annular protrusion structure, one end face of the circular tube is provided with a tapered thread sleeve structure, and the other end face is provided with a cylindrical thread sleeve structure. The tapered thread sleeve structure, the cylindrical thread sleeve structure and the circular tube are coaxial; two sets of limit assemblies are respectively provided on both sides of the protrusion structure to limit the position of the reducing adapter.

[0022] Preferably, the limiting assembly includes a thrust ball bearing and a bearing cover mounted on the reducer, a sealing assembly is provided between the thrust ball bearing and the bearing cover, the thrust ball bearing is pressed onto the raised structure, and the bearing cover is detachably connected to the cylinder.

[0023] An in-situ leaching drilling platform comprises the above-mentioned drilling head structure, wherein the first sprocket assembly and the second sprocket assembly are respectively arranged at the upper end and the lower end of the drilling tower on the drilling platform.

[0024] Preferably, it further comprises a guide assembly for guiding the shoulder pole beam assembly, wherein the guide assembly is arranged between the drilling tower and the shoulder pole beam assembly.

[0025] Preferably, the guide assembly includes two guide rails arranged on the drilling tower, and the guide rails are arranged along the height direction of the drilling tower. The two ends of the box are respectively connected to a connecting rod through a fastening structure, and the length direction of the connecting rod is perpendicular to the length direction of the square active drill rod. The end of the connecting rod away from the box is provided with a roller clamped in the guide rail.

[0026] The present invention provides a drilling head structure and an in-situ leaching construction drilling platform, which can complete the pressurized drilling process within 200m when opening a hole. No rod-turning operation is required when drilling a 9m drill rod. This not only improves the hole-making rate and reduces the occurrence of hole deviation accidents, but also shortens the auxiliary construction time and improves the construction efficiency. It has strong practicality and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 3 It is a schematic diagram of the local structure of the present invention Figure 1 ;

[0030] Figure 4 It is a schematic diagram of the local structure of the present invention Figure 2 ;

[0031] Figure 5 It is a schematic diagram of the local structure of the present invention Figure 3 ;

[0032] Figure 6 It is a schematic diagram of the local structure of the present invention Figure 4 ;

[0033] Figure 7 It is a schematic diagram of the local structure of the present invention Figure 5 ;

[0034] Figure 8 It is a schematic diagram of the local structure of the present invention Figure 6 ;

[0035] Figure 9 It is a schematic diagram of the local structure of the present invention Figure 7 ;

[0036] Figure 10 It is a schematic diagram of the local structure of the present invention Figure 8 ;

[0037] Figure 11 It is a schematic diagram of the local structure of the present invention Figure 9 ;

[0038] Figure 12 It is a schematic diagram of the local structure of the present invention Figure 10 ;

[0039] Figure 13 It is a schematic diagram of the local structure of the present invention Figure 11 ;

[0040] Figure 14 It is a schematic diagram of the local structure of the present invention Figure 12 . DETAILED DESCRIPTION

[0041] The present invention provides a drilling head structure and an in-situ leaching construction drilling platform. Figures 1 to 14 The present invention is described with reference to a structural schematic diagram of FIG.

[0042] Example 1

[0043] The present invention provides a drilling probe structure, such as Figure 1As shown, its structure includes a first sprocket assembly 1, a second sprocket assembly 2, a driving device 3, a chain 4, a shoulder beam assembly 5 and a drilling rig.

[0044] Among them, such as Figure 1 and Figure 2 As shown, the drive device 3 can preferably be a hydraulic motor. The output end of the drive device 3 is coaxially connected to the input shaft of the second sprocket assembly 2, which is used to transmit the power from the drive device 3 to the input shaft of the second sprocket assembly 2. A chain 4 is provided between the first sprocket assembly 1 and the second sprocket assembly 2. The chain 4 is used to transmit the motion of the second sprocket assembly 1 to the first sprocket assembly 1. The chain 4 is connected to the shoulder beam assembly 5, and the drilling rig is mounted on the shoulder beam assembly 5.

[0045] Specifically, such as Figure 3 and Figure 4 As shown, the first sprocket assembly 1 includes a first support 101, a third support 104 and a second support 106 which are arranged in sequence at intervals, and the first rotating shaft 103 is passed through the first support 101, the second support 106 and the third support 104. Bearings for motion isolation and support are respectively provided between the first rotating shaft 103 and the first support 101, the second support 106 and the third support 104. A first sprocket 102 wrapped with a chain 4 is provided between the first support 101 and the third support 104. The first sprocket 102 is mounted on the first rotating shaft 103, and a key connection structure is used to fix the first sprocket 102 and the first rotating shaft 103. A second sprocket 105 wrapped with the chain 4 is provided between the second support 106 and the third support 104. The second sprocket 105 is mounted on the first rotating shaft 103, and a key connection structure is used to fix the second sprocket 105 and the first rotating shaft 103.

[0046] like Figure 8 and Figure 9 As shown, the second sprocket assembly 2 includes a fourth support 201, a sixth support 204, and a fifth support 206, which are arranged in sequence and spaced apart. The second rotating shaft 203 is provided through the fourth support 201, the fifth support 206, and the sixth support 204. A third sprocket 202, around which the chain 4 is wound, is provided between the fourth support 201 and the sixth support 204. The third sprocket 202 is mounted on the second rotating shaft 203, and a key connection structure is used to achieve the fixation of the third sprocket 202 and the second rotating shaft 203. A fourth sprocket 205, around which the chain 4 is wound, is provided between the fifth support 206 and the sixth support 204. The fourth sprocket 205 is mounted on the second rotating shaft 203, and a key connection structure is used to achieve the fixation of the fourth sprocket 205 and the second rotating shaft 203. One end of the second rotating shaft 203 is coaxially mounted and fixed to the output end of the driving device 3.

[0047] like Figure 5 、 Figure 6 and Figure 7 As shown, the shoulder beam assembly 5 includes a box body 501 , and two connecting structures 502 for being connected to the chain 4 are symmetrically provided on one side of the box body 501 .

[0048] Furthermore, the structure of the connecting structure 502 can be a lifting ring, and the lifting ring and the mounting hole opened on the box body 501 are detachably connected by threaded connection. The lifting ring and the chain 4 can be fixedly connected with screws, or the chain 4 can be connected to the lifting ring through a quick hanger.

[0049] A drill rod connection assembly 503 for connecting the square active drill rod 6 of the drilling rig is provided between the two connection structures 502 . The drill rod connection assembly 503 is detachably connected to the box body 501 by screws or bolts.

[0050] like Figure 10 and Figure 11 As shown, the structure of the drill rod connection assembly 503 includes a cylinder 5032, and an annular convex structure is provided on the outer circumference of the cylinder 5032. The convex structure is provided with a plurality of connecting holes, and bolts or screws for realizing a detachable connection between the cylinder 5032 and the box body 501 are inserted into the connecting holes.

[0051] The reducer 5031 is limitedly connected in the cylinder 5032 and is used to connect the square active drill rod 6. Figure 12 、 Figure 13 and Figure 14 As shown, the main structure of the reducer 5031 includes a circular tube 50311, the outer ring of the circular tube 50311 has an annular protrusion structure 50312, one end face of the circular tube 50311 is provided with a conical thread sleeve structure 50314, and the other end face is provided with a cylindrical thread sleeve structure 50313, and the conical thread sleeve structure 50314, the cylindrical thread sleeve structure 50313 and the circular tube 50311 are coaxial; two sets of limit assemblies are respectively provided on both sides of the protrusion structure 50312, for limiting the position of the reducer 5031.

[0052] Furthermore, the structure of the limiting assembly includes a thrust ball bearing 5034 and a bearing cover 5033 mounted on the reducer 5031, a sealing assembly is provided between the thrust ball bearing 5034 and the bearing cover 5033, the thrust ball bearing 5034 is pressed onto the raised structure 50312, the bearing cover 5033 is detachably connected to the cylinder 5032 by screws or bolts, and a pressure oil cup 5035 is fixed on the bearing cover 5033, and lubricating oil can be added to the thrust ball bearing 5034 through the pressure oil cup 5035.

[0053] Preferably, the sealing component is a circular sealing ring.

[0054] An in-situ leaching drilling platform comprises a drilling head structure as described above, wherein a first sprocket assembly 1 and a second sprocket assembly 2 are respectively arranged at the upper end and the lower end of a drilling tower on the drilling platform.

[0055] Furthermore, in order to prevent the square active drill rod 6 of the drilling rig on the drill rod connection assembly 503 from tilting, a guide assembly for guiding the shoulder beam assembly 5 is also provided, and the guide assembly is arranged between the drilling tower and the shoulder beam assembly 5.

[0056] Further, such as Figure 7 As shown, the structure of the guide assembly includes two guide rails arranged on the drilling tower, and the guide rails are arranged along the height direction of the drilling tower. The two ends of the box 501 are respectively connected to a connecting rod 506 through a fastening structure 504. The length direction of the connecting rod 506 is perpendicular to the length direction of the square active drill rod 6. The end of the connecting rod 506 away from the box 501 is provided with a roller 505 clamped in the guide rail.

[0057] During use, after the in-situ leaching drilling platform completes the drilling tower construction state, the gearbox handle of the drilling rig is operated to make the vertical shaft of the drilling rig output different speeds, driving the universal joint assembly and the turntable to rotate. The Sifang active drill rod 6 is passed through the turntable, and the turntable drives the Sifang active drill rod 6 to rotate, thereby providing torque and rotation speed for in-situ leaching drilling construction.

[0058] Operate the hydraulic operating valve of the drilling rig to activate the hydraulic motor as the driving device, driving the chain 4 to move downward, and the chain 4 pulls the shoulder beam assembly 5 to move downward. The lower part of the shoulder beam assembly 5 is equipped with a four-way active drill rod 6, thereby providing feed pressure for geological drilling construction. When the hydraulic valve is operated in reverse, an upward lifting force can be provided for the four-way active drill rod 6.

[0059] The in-situ leaching construction drilling platform uses a hydraulic motor to drive the Sifang active drill rod 6 to complete pressurized or decompressed drilling within 200m, or the wire rope on the drilling rig's winch suspends the shoulder beam assembly 5 to complete pressurized or decompressed drilling. Both methods have an effective feed stroke of 7.55m, which can complete one drilling of a 9-meter drill rod without reversing the rod back and forth, meeting the construction needs of 9m oil drill rods.

[0060] Since there are guide rails on both sides of the inner side of the upper tower of the ground-based in-situ immersion drilling platform, the guide rails are preferably slides, which can provide guidance and positioning support for the shoulder beam assembly 5 when it slides up and down, and when lifting or adding drill rods, the shoulder beam assembly 5 can be hung on the auxiliary slide. At this time, the wellhead position is clear, which is convenient for lifting and lowering the drill rod.

[0061] The ground-based in-situ immersion drilling platform uses a hydraulic motor to drive a chain mechanism to complete pressurized and decompressed drilling processes within 200m. After exceeding 200m, the wire rope on the drilling rig's winch is used to lift the shoulder beam assembly to complete decompression drilling, and the weight of the drill rod is used to complete pressurized drilling, making it suitable for different working conditions and able to meet long-stroke feeding operations. The feeding stroke can reach 7.55 meters at a time, which can avoid quality accidents such as hole inclination caused by multiple rod falls.

[0062] The present invention provides a drilling head structure and an in-situ leaching construction drilling platform, which can complete the pressurized drilling process within 200m when opening a hole. No rod-turning operation is required when drilling a 9m drill rod. This not only improves the hole-making rate and reduces the occurrence of hole deviation accidents, but also shortens the auxiliary construction time and improves the construction efficiency. It has strong practicality and is worthy of promotion.

[0063] The above disclosure is only a preferred specific embodiment of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A drilling probe structure, characterized in that: include: A first sprocket assembly (1); A second sprocket assembly (2); A driving device (3), the output end of which is coaxially sleeve-connected to the input shaft of the second sprocket assembly (2); a chain (4) disposed between the first sprocket assembly (1) and the second sprocket assembly (2), for transmitting the motion of the second sprocket assembly (1) to the first sprocket assembly (1); A shoulder beam assembly (5) connected to the chain (4); Drilling rig, provided on the shoulder beam assembly (5); The first sprocket assembly (1) comprises a first support (101) and a second support (106) arranged at an interval, a third support (104) being arranged between the first support (101) and the second support (106), a first rotating shaft (103) being passed through the first support (101), the second support (106) and the third support (104), a first sprocket (102) wound with a chain (4) being arranged between the first support (101) and the third support (104), the first sprocket (102) being fixedly mounted on the first rotating shaft (103), a second sprocket (105) wound with a chain (4) being arranged between the second support (106) and the third support (104), the second sprocket (105) being fixedly mounted on the first rotating shaft (103); The second sprocket assembly (2) includes a fourth support (201) and a fifth support (206) arranged at intervals, a sixth support (204) is arranged between the fourth support (201) and the fifth support (206), a second rotating shaft (203) is passed through the fourth support (201), the fifth support (206) and the sixth support (204), a third sprocket (202) around which a chain (4) is wound is arranged between the fourth support (201) and the sixth support (204), the third sprocket (202) is fixedly mounted on the second rotating shaft (203), a fourth sprocket (205) around which a chain (4) is wound is arranged between the fifth support (206) and the sixth support (204), the fourth sprocket (205) is fixedly mounted on the second rotating shaft (203), and one end of the second rotating shaft (203) is fixedly mounted coaxially with the output end of the driving device (3); The shoulder beam assembly (5) includes a box (501), two connecting structures (502) for connecting to the chain (4) are symmetrically provided on one side of the box (501), a drill rod connecting assembly (503) for connecting to the square active drill rod (6) of the drilling rig is provided between the two connecting structures (502), and the drill rod connecting assembly (503) is connected to the box (501); The drill pipe connection assembly (503) comprises: The cylinder (5032) is detachably connected to the box (501); A reducing adapter (5031) is connected in a limited manner within the cylinder (5032). The reducing adapter (5031) is used to connect a square active drill pipe (6). The reducing adapter (5031) comprises a circular tube (50311). The outer ring of the circular tube (50311) has an annular protruding structure (50312). A conical thread sleeve structure (50314) is provided on one end face of the circular tube (50311), and a cylindrical thread sleeve structure (50313) is provided on the other end face. The conical thread sleeve structure (50314), the cylindrical thread sleeve structure (50313) and the circular tube (50311) are coaxial. Two sets of limiting components are respectively provided on both sides of the protruding structure (50312) to limit the position of the reducing adapter (5031).

2. A drilling head structure according to claim 1, characterized in that: The limiting assembly comprises a thrust ball bearing (5034) and a bearing cover (5033) mounted on the reducer (5031); a sealing assembly is provided between the thrust ball bearing (5034) and the bearing cover (5033); the thrust ball bearing (5034) is press-fitted onto the protruding structure (50312); and the bearing cover (5033) is detachably connected to the cylinder (5032).

3. An in-situ leaching drilling platform, comprising a drilling head structure according to any one of claims 1-2, characterized in that: The first sprocket assembly (1) and the second sprocket assembly (2) are respectively arranged at the upper end and the lower end of the drilling tower on the drilling platform.

4. The in-situ leaching drilling platform according to claim 3, characterized in that: It also includes a guide assembly for guiding the shoulder pole beam assembly (5), wherein the guide assembly is arranged between the drilling tower and the shoulder pole beam assembly (5).

5. The in-situ leaching drilling platform according to claim 4, characterized in that: The guide assembly comprises two guide rails arranged on the drilling tower, the guide rails being arranged along the height direction of the drilling tower, and the two ends of the box (501) are respectively connected to a connecting rod (506) via a fastening structure (504), the length direction of the connecting rod (506) being perpendicular to the length direction of the square active drill rod (6), and the end of the connecting rod (506) away from the box (501) is provided with a roller (505) clamped in the guide rail.

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