A kind of anti-well drilling rod capable of satisfying 8 meters diameter

Abstract

This invention discloses a raise boring machine capable of supporting 8-meter diameter drill pipes, relating to the field of drilling equipment technology. The invention includes a support platform, with a drilling rig mounted on top and a drill pipe shaft mounted at the bottom of the drilling rig. A reaming assembly is located at the bottom of the drill pipe shaft, including a fixed shell at the bottom of the drill pipe shaft. This invention utilizes a protective assembly with multiple sets of replaceable protective plates evenly covering the surface of the drill pipe shaft. During drilling, these plates replace the drill pipe shaft in direct friction with the borehole wall, effectively preventing wear and micro-cracks in the drill pipe shaft body. Simultaneously, after drilling, operators can visually determine the location of damage to the drill pipe shaft by observing the wear of the protective plates. The use of positioning screws, fixing caps, and limiting components enables rapid disassembly and reliable locking of the protective plates, preventing them from loosening under vibration. The reaming assembly, in conjunction with the drilling rig and the first hydraulic cylinder, completes large-diameter raise boring operations, improving construction stability.

Description

Technical Field

[0001] This invention belongs to the field of drilling equipment technology, and in particular relates to a reverse drilling pipe with a diameter of 8 meters. Background Technology

[0002] A raise boring machine (RBM) is a heavy machine used for vertical or inclined shaft construction in underground engineering projects, primarily in coal mines, metal mines, hydropower, and transportation tunnels. Its working principle involves drilling from top to bottom, first drilling a small-diameter pilot hole, then enlarging the hole to the designed diameter to form the shaft. The equipment consists of a main unit, power system, propulsion system, drilling tools, and control system. It features high mechanization, good hole quality, high construction efficiency, and strong safety. The raise drill pipe is a key component in raise boring machine construction, mainly used to transmit drilling power and convey flushing media, connecting the drilling rig and drill bit, and achieving rock breaking, slag removal, and wall protection functions.

[0003] Currently, during drilling operations, raised shaft drill pipes need to penetrate deep into the formation. If the drill bit encounters hard rock or faults during drilling, it is prone to deviation, leading to uneven stress on the drill pipe. Simultaneously, the continuous rotation of the drill pipe and its friction against the borehole wall cause surface wear and even micro-cracks. Because these damages are mostly located internally or in concealed areas, they are difficult to identify through visual inspection during recovery, posing a potential hazard for reuse. If not detected in time, they may suddenly break under high pressure and high torque conditions during secondary use, not only affecting project progress but also potentially causing safety accidents.

[0004] To address this issue, we offer a raised hole pipe with an 8-meter diameter to solve the aforementioned problem. Summary of the Invention

[0005] The purpose of this invention is to provide a raise pipe with a diameter of 8 meters. Through the structural cooperation of the reaming assembly, the protection assembly, and the limiting assembly, it solves the problems of existing raise pipes in use. During use, the drill bit needs to be lowered into the formation. During the lowering process, it is affected by the hard layer and will deviate to a certain extent. When the drill pipe is constantly rotating, it will rub against the formation. When the drill pipe is retrieved, the friction loss cannot be judged from the appearance. When it is reused, it is easy to break.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0007] This invention relates to a raised borehole drill pipe capable of supporting an 8-meter diameter, comprising a support platform, a drilling machine mounted on top of the support platform, and a drill pipe shaft mounted on the bottom of the drilling machine. A reaming assembly is located at the bottom of the drill pipe shaft, comprising a fixed housing at the bottom of the drill pipe shaft, a support seat mounted on one side of the fixed housing, a movable seat mounted on top of the support seat, and a cutterhead movably connected inside the movable seat. The reaming assembly increases the diameter of the borehole. A protective assembly is provided on the surface of the drill pipe shaft, comprising a protective plate located on one side of the drill pipe shaft. The mounting groove on the shaft surface, the positioning shaft mounted on one side of the protective plate, the fixing cap on one side of the positioning shaft, and the positioning screw threaded into the fixing cap, together with the protective assembly, protect the surface of the drill rod shaft; a limit assembly is provided on one side of the positioning shaft, the limit assembly includes a fixing groove on one side of the positioning shaft, a rotating shaft movably connected inside the fixing groove, a push rod mounted on the surface of the rotating shaft, a limit groove on one side of the fixing cap, a limit shaft movably connected inside the limit groove, and a moving rod mounted on the surface of the limit shaft, thereby limiting the protective plate through the limit assembly.

[0008] The present invention is further configured such that a connector is installed at the output end of the drilling machine, an external thread is provided at the top of the drill rod shaft, an internal thread is provided at the bottom of the drill rod shaft, and the connector is adapted to the external thread.

[0009] The invention is further configured such that a support frame is installed on one side of the drilling machine, and a first hydraulic cylinder is installed inside the support frame, with the output end of the first hydraulic cylinder fixedly connected to the support platform.

[0010] The present invention is further configured such that a mounting plate is fixedly connected to the bottom of the fixed shell, a mounting screw is provided at the bottom of the mounting plate, and the other end of the mounting screw passes through the mounting plate and is threadedly connected to the drill rod shaft.

[0011] The invention is further configured such that one end of the positioning shaft extends into the mounting groove, a rotating head is mounted on one side of the positioning screw, and an internal hexagonal groove is formed on one side of the rotating head.

[0012] The present invention is further configured such that a support assembly is provided on one side of the support platform, the support assembly includes a second hydraulic rod installed on the top of the support platform, the output end of the second hydraulic rod is fixedly connected to a limiting plate, a positioning groove is provided on the surface of the drill rod shaft, and the limiting plate is adapted to the positioning groove.

[0013] The present invention is further configured such that an adjusting frame is fixedly connected to one side of the limiting plate, a third hydraulic rod is fixedly connected to one side of the adjusting frame, and a check plate is fixedly connected to the output end of the third hydraulic rod.

[0014] The present invention is further configured such that a sliding rod is fixedly connected to one side of the limiting plate, and the sliding rod is slidably connected to the inner wall of the support platform.

[0015] The present invention is further configured such that one side of the positioning screw extends through to the outside of the protective plate, and one side of the protective plate is in contact with the drill rod shaft.

[0016] The invention is further configured such that a pin is movably connected to the other end of the push rod, and the other side of the pin is movably connected to the moving rod.

[0017] The present invention has the following beneficial effects: by setting up a protective component, multiple sets of replaceable protective plates uniformly covering the surface of the drill rod shaft are used to replace the drill rod shaft in direct friction with the borehole wall during the drilling process, effectively avoiding wear and micro-cracks in the drill rod shaft body. At the same time, after drilling, the operator can intuitively judge the damaged location of the drill rod shaft by observing the wear of the protective plates. By setting up a linkage structure of positioning screw, fixing cap and limiting component, the protective plates can be quickly disassembled and reliably locked to prevent them from loosening under vibration conditions. The hole enlargement component works with the drilling machine and the first hydraulic cylinder to complete large-diameter raise boring operations.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional diagram of a type of raisebore drill pipe with a diameter of 8 meters.

[0021] Figure 2 This is a schematic diagram of a hole-reaming assembly that can meet the requirements of an 8-meter diameter reverse drilling pipe.

[0022] Figure 3 This is a schematic diagram of the structure of a drill pipe shaft that can meet the requirements of an 8-meter diameter raise boring pipe.

[0023] Figure 4 This is a cross-sectional view of the drill pipe shaft in a raised drilling pipe with a diameter of 8 meters.

[0024] Figure 5 This is a schematic diagram of a protective component in a raise boring pipe with a diameter of 8 meters.

[0025] Figure 6 This is a cross-sectional view of the positioning axis in a raise boring pipe with an 8-meter diameter.

[0026] Figure 7 This is a schematic diagram of a support assembly in a raise boring pipe with a diameter of 8 meters.

[0027] Figure 8This is a cross-sectional view of a limiting plate in a raise boring pipe with a diameter of 8 meters.

[0028] In the attached diagram: 1. Support platform; 2. Drilling machine; 3. Drill rod shaft; 4. Reaming assembly; 401. Fixed shell; 402. Support base; 403. Movable base; 404. Cutterhead; 5. Protective assembly; 501. Protective plate; 502. Mounting groove; 503. Positioning shaft; 504. Fixing cap; 505. Positioning screw; 6. Limiting assembly; 601. Fixing groove; 602. Rotating shaft; 603. Push rod; 604. Limiting groove; 60 5. Limiting shaft; 606. Moving rod; 7. Connector; 8. External thread; 9. Internal thread; 10. Support frame; 11. First hydraulic cylinder; 12. Mounting plate; 13. Mounting screw; 14. Rotating head; 15. Support assembly; 1501. Second hydraulic rod; 1502. Limiting plate; 1503. Positioning groove; 1504. Adjusting frame; 1505. Third hydraulic rod; 1506. Check plate; 16. Slide rod; 17. Pin. Detailed Implementation

[0029] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments. Example

[0030] Please see Figures 1-8 This invention relates to a raised borehole drill pipe capable of supporting an 8-meter diameter, comprising a support platform 1, a drilling machine 2 mounted on top of the support platform 1, and a drill pipe shaft 3 mounted on the bottom of the drilling machine 2; a borehole reaming assembly 4 is mounted on the bottom of the drill pipe shaft 3, the borehole reaming assembly 4 including a fixed housing 401 mounted on the bottom of the drill pipe shaft 3, a support base 402 mounted on one side of the fixed housing 401, a movable base 403 mounted on the top of the support base 402, and a cutterhead 404 movably connected inside the movable base 403, thereby increasing the diameter of the borehole through the borehole reaming assembly 4; a protective assembly 5 is provided on the surface of the drill pipe shaft 3, the protective assembly 5 including a protective plate 501 mounted on one side of the drill pipe shaft 3, and a mounting groove 502 formed on the surface of the drill pipe shaft 3, which is mounted on the protective plate 501. A positioning shaft 503 is located on one side of the positioning shaft 503, a fixing cap 504 is provided on one side of the positioning shaft 503, and a positioning screw 505 is threadedly connected to the inside of the fixing cap 504. The surface of the drill rod shaft 3 is protected by the protective component 5. A limit component 6 is provided on one side of the positioning shaft 503. The limit component 6 includes a fixing groove 601 opened on one side of the positioning shaft 503, a rotating shaft 602 movably connected to the inside of the fixing groove 601, a push rod 603 installed on the surface of the rotating shaft 602, a limit groove 604 opened on one side of the fixing cap 504, a limit shaft 605 movably connected to the inside of the limit groove 604, and a moving rod 606 installed on the surface of the limit shaft 605. The protective plate 501 is limited by the limit component 6.

[0031] Specifically: the drilling rig 2 drives the drill pipe shaft 3 to rotate, providing the high torque output required for reaming in raised boreholes. The drill pipe shaft 3 transmits the rotational power and axial thrust generated by the drilling rig 2 to the reaming assembly 4 below. The fixed housing 401 fixes the reaming assembly 4 as a whole to the bottom of the drill pipe shaft 3, bearing and transmitting the rotational and propulsive forces of the drill pipe shaft 3. The support 402 provides a solid mounting base for the movable seat 403 and transmits the reaction force generated by the cutterhead 404 to the fixed housing 401 and the drill pipe shaft 3. The movable seat 403 connects to the cutterhead 404 and allows the cutterhead 404 to... During the reaming process, the angle is automatically adjusted according to the hardness of the rock strata. The cutterhead 404 is used to rotate and cut the rock or soil under the drive of the drill rod shaft 3, gradually increasing the borehole diameter to meet the requirement of an 8-meter borehole diameter. The protective plate 501 is used to replace the drill rod shaft 3 in direct contact with the inner wall of the borehole when the drill rod shaft 3 rotates, bearing friction and impact. The mounting groove 502 is used to accommodate the positioning shaft 503, providing a precise installation position for the protective plate 501. The positioning shaft 503 is used to insert into the mounting groove 502, mechanically locking the protective plate 501 to the surface of the drill rod shaft 3. The fixing cap 504 is used to press the positioning shaft 503 and... The axial movement of the positioning shaft 503 is restricted to prevent it from exiting the mounting slot 502. The positioning screw 505 is used to push or pull back the fixing cap 504 by rotation to achieve quick installation and removal of the protective plate 501. The fixing slot 601 is used to accommodate the rotating shaft 602 and provide movement space for the push rod 603. The rotating shaft 602 is used to support the push rod 603 and allow the push rod 603 to rotate around it. The push rod 603 is used to rotate around the rotating shaft 602 under the push of the fixing cap 504, thereby driving the moving rod 606 to move. The limiting slot 604 is used to accommodate the limiting shaft 605 and guide its movement direction. 5 is used to slide within the limiting groove 604, transmitting the displacement of the fixed cap 504 to the moving rod 606. The moving rod 606 is used to cooperate with the push rod 603 to achieve angle changes when the fixed cap 504 moves, and to clamp the positioning shaft 503 to prevent it from exiting the mounting groove 502. The connector 7 is used to transmit the rotational power of the drilling machine 2 to the drill rod shaft 3, and to facilitate the quick connection and replacement of the drill rod shaft 3. The external thread 8 is used to connect with the connector 7 to ensure the stability and sealing of the power transmission. The internal thread 9 is used to connect with the next section of the drill rod shaft 3 or the reaming assembly 4 to achieve the gradual lengthening of the drill rod. Example

[0032] Please see Figures 1-8Based on embodiment 1, the output end of the drilling machine 2 is equipped with a connector 7, the top of the drill rod shaft 3 is provided with an external thread 8, the bottom of the drill rod shaft 3 is provided with an internal thread 9, the connector 7 is adapted to the external thread 8, a support frame 10 is installed on one side of the drilling machine 2, a first hydraulic cylinder 11 is installed inside the support frame 10, the output end of the first hydraulic cylinder 11 is fixedly connected to the support platform 1, the bottom of the fixed shell 401 is fixedly connected with an mounting plate 12, the bottom of the mounting plate 12 is provided with a mounting screw 13, the other end of the mounting screw 13 passes through the mounting plate 12 and is threadedly connected to the drill rod shaft 3, one end of the positioning shaft 503 passes through the mounting groove 502, a rotating head 14 is installed on one side of the positioning screw 505, and an internal hexagonal groove is provided on one side of the rotating head 14.

[0033] Specifically: the support frame 10 is used to fix the first hydraulic cylinder 11 and provide guidance for the lifting and lowering of the drilling machine 2. The first hydraulic cylinder 11 is used to provide axial thrust to push the drilling machine 2 and the drill rod shaft 3 to move up and down. The mounting plate 12 is used to connect the fixed shell 401 to the end of the drill rod shaft 3 and provide a flat mounting surface. The mounting screw 13 is used to pass through the mounting plate 12 and screw into the drill rod shaft 3 to achieve mechanical locking between the fixed shell 401 and the drill rod shaft 3. The rotating head 14 is used for tool clamping to facilitate the operator to rotate the positioning screw 505. The internal hexagonal slot is used to cooperate with the internal hexagonal wrench to improve the tightening and loosening efficiency of the positioning screw 505. The second hydraulic rod 1501 is used to drive the limiting plate 1502 to move closer to or away from the drill rod shaft 3. Example

[0034] Please see Figures 1-8 Based on Embodiments 1 and 2, a support assembly 15 is provided on one side of the support platform 1. The support assembly 15 includes a second hydraulic rod 1501 installed on the top of the support platform 1. A limit plate 1502 is fixedly connected to the output end of the second hydraulic rod 1501. A positioning groove 1503 is opened on the surface of the drill rod shaft 3. The limit plate 1502 is adapted to the positioning groove 1503. An adjustment frame 1504 is fixedly connected to one side of the limit plate 1502. A third hydraulic rod 1505 is fixedly connected to one side of the adjustment frame 1504. A check plate 1506 is fixedly connected to the output end of the third hydraulic rod 1505. A sliding rod 16 is fixedly connected to one side of the limit plate 1502. The sliding rod 16 is slidably connected to the inner wall of the support platform 1. One side of the positioning screw 505 extends through to the outside of the protective plate 501. One side of the protective plate 501 is in contact with the drill rod shaft 3. A pin 17 is movably connected to the other end of the push rod 603. The other side of the pin 17 is movably connected to the moving rod 606.

[0035] Specifically: the limiting plate 1502 is used to abut against the drill rod shaft 3 from the side when the drill rod shaft 3 rotates; the positioning groove 1503 is used to cooperate with the limiting plate 1502 to achieve precise positioning and support of the drill rod shaft 3 by the limiting plate 1502; the adjusting frame 1504 is used to install the third hydraulic rod 1505 and transmit the force; the third hydraulic rod 1505 is used to drive the check plate 1506 to move; the check plate 1506 is used to prevent the drill rod shaft 3 from sliding in the reverse direction when it stops rotating; the sliding rod 16 is used to slide on the inner wall of the support platform 1 to provide guidance for the movement of the limiting plate 1502; and the pin 17 is used to hinge the push rod 603 and the moving rod 606 so that the two can tilt relative to each other.

[0036] The working principle of this invention is as follows: the operator starts the drilling machine 2 through the external controller. The drilling machine 2, together with the connecting head 7, drives the drill rod shaft 3 to rotate. The drill rod shaft 3 drives the fixed shell 401 and the support seat 402 to rotate. The support seat 402, together with the movable seat 403, drives the cutter head 404 to rotate. Then, the first hydraulic cylinder 11 is started to drive the drilling machine 2 to move upward. The drilling machine 2, together with the drill rod shaft 3, drives the cutter head 404 to move upward, drilling upward from the bottom layer to realize the reverse well operation.

[0037] When the drill rod shaft 3 rotates, it drives the protective plate 501 to rotate. The protective plate 501 rotates and contacts the inner wall of the drilling channel. The protective plate 501 replaces the drill rod shaft 3 in friction with the hard soil layer. There are six protective plates 501, which are evenly covered on the surface of the drill rod shaft 3 to improve the protection of the drill rod shaft 3. After the drilling operation is completed, the staff can observe the wear of the six sets of protective plates 501 and determine the wear position on the surface of the drill rod shaft 3. When one set of protective plates 501 is severely worn, the staff can use an external tool to rotate the rotating head 14. The rotating head 14 drives the positioning screw 505 to rotate. The positioning screw 505 pushes the fixing cap 504 to move. The fixing cap 504 pushes the push rod 603 and the moving rod 606 to tilt, so that the push rod 603 and the moving rod 606 return to horizontal rotation, reducing the unfolded diameter of the push rod 603 and the moving rod 606, so that the positioning shaft 503 can be pushed out of the installation groove 502.

[0038] Then, the protective plate 501 is moved, and the protective plate 501 drives the positioning shaft 503 to disengage from the mounting groove 502, completing the quick disassembly of the protective plate 501. After that, the new protective plate 501 is reinstalled with the drill pipe shaft 3. The replaceable protective plate 501 improves the protection of the drill pipe shaft 3.

[0039] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A type of raise boring pipe capable of supporting an 8-meter diameter, comprising a support platform (1), characterized in that: The top of the support platform (1) is equipped with a drilling machine (2), and the bottom of the drilling machine (2) is equipped with a drill rod shaft (3). The bottom of the drill rod shaft (3) is provided with a hole reaming assembly (4). The hole reaming assembly (4) includes a fixed shell (401) disposed at the bottom of the drill rod shaft (3), a support seat (402) installed on one side of the fixed shell (401), a movable seat (403) installed on the top of the support seat (402), and a cutter head (404) movably connected to the inside of the movable seat (403). The diameter of the drill hole is increased by the hole reaming assembly (4). The drill rod shaft (3) is provided with a protective component (5). The protective component (5) includes a protective plate (501) provided on one side of the drill rod shaft (3), an installation groove (502) opened on the surface of the drill rod shaft (3), a positioning shaft (503) installed on one side of the protective plate (501), a fixing cap (504) provided on one side of the positioning shaft (503), and a positioning screw (505) threadedly connected to the inside of the fixing cap (504). The protective component (5) protects the surface of the drill rod shaft (3). A limiting component (6) is provided on one side of the positioning shaft (503). The limiting component (6) includes a fixed groove (601) opened on one side of the positioning shaft (503), a rotating shaft (602) movably connected inside the fixed groove (601), a push rod (603) installed on the surface of the rotating shaft (602), a limiting groove (604) opened on one side of the fixed cap (504), a limiting shaft (605) movably connected inside the limiting groove (604), and a moving rod (606) installed on the surface of the limiting shaft (605). The limiting component (6) limits the protective plate (501).

2. The raised drilling pipe with a diameter of 8 meters as described in claim 1, characterized in that: The drilling machine (2) has a connector (7) installed at the output end. The top of the drill rod shaft (3) is provided with an external thread (8) and the bottom of the drill rod shaft (3) is provided with an internal thread (9). The connector (7) is compatible with the external thread (8).

3. A raised drilling pipe with a diameter of 8 meters as described in claim 1, characterized in that: The drilling machine (2) is equipped with a support frame (10) on one side. The support frame (10) is equipped with a first hydraulic cylinder (11), and the output end of the first hydraulic cylinder (11) is fixedly connected to the support platform (1).

4. A raised drilling pipe with a diameter of 8 meters as described in claim 1, characterized in that: The bottom of the fixed shell (401) is fixedly connected to the mounting plate (12), and the bottom of the mounting plate (12) is provided with a mounting screw (13). The other end of the mounting screw (13) passes through the mounting plate (12) and is threadedly connected to the drill rod shaft (3).

5. A raised drilling pipe with a diameter of 8 meters as described in claim 1, characterized in that: One end of the positioning shaft (503) extends into the mounting groove (502), and a rotating head (14) is installed on one side of the positioning screw (505). An internal hexagonal groove is provided on one side of the rotating head (14).

6. A raised drilling pipe with a diameter of 8 meters as described in claim 1, characterized in that: A support assembly (15) is provided on one side of the support platform (1). The support assembly (15) includes a second hydraulic rod (1501) installed on the top of the support platform (1). The output end of the second hydraulic rod (1501) is fixedly connected to a limiting plate (1502). A positioning groove (1503) is provided on the surface of the drill rod shaft (3). The limiting plate (1502) is adapted to the positioning groove (1503).

7. A raised drilling pipe with a diameter of 8 meters as described in claim 6, characterized in that: An adjusting frame (1504) is fixedly connected to one side of the limiting plate (1502), a third hydraulic rod (1505) is fixedly connected to one side of the adjusting frame (1504), and a check plate (1506) is fixedly connected to the output end of the third hydraulic rod (1505).

8. A raised drilling pipe with a diameter of 8 meters as described in claim 6, characterized in that: A sliding rod (16) is fixedly connected to one side of the limiting plate (1502), and the sliding rod (16) is slidably connected to the inner wall of the support platform (1).

9. A raise pipe with a diameter of 8 meters as described in claim 1, characterized in that: One side of the positioning screw (505) extends to the outside of the protective plate (501), and one side of the protective plate (501) is in contact with the drill rod shaft (3).

10. A raise pipe with a diameter of 8 meters as described in claim 1, characterized in that: The other end of the push rod (603) is movably connected to a pin (17), and the other side of the pin (17) is movably connected to the moving rod (606).

Images