Vertical drilling device and method

Abstract

The invention provides a vertical well drilling device and method, and belongs to the technical field of vertical well drilling devices. The feeding mechanism is arranged at the side end of the frame; the tube box is fixedly connected to the top of the frame, and two parallel electromagnetic chucks are arranged between the inner walls of the tube box; the loading and unloading mechanism is arranged between the inner walls of the pipe box, is connected with the two electromagnetic chucks and is used for moving the two electromagnetic chucks, so that the single drill rod is moved towards the accommodating box or taken out from the accommodating box, and then the single drill rod is loaded and unloaded; a single drill rod is clamped between the cambered surface guide rod and the two electromagnetic chucks, so that the upper drill rod and the lower drill rod in the containing box and the rotating assembly vertically correspond to each other, mechanical butt joint of the drill rods is adopted to replace manual butt joint, errors generated by butt joint of the drill rods are avoided, deflection generated during vertical drilling of the drill bits is eliminated, real-time correction of the drill bits is effectively reduced, and the production efficiency is improved. And the vertical drilling operation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of vertical drilling devices, and in particular relates to a vertical drilling device and method. Background Art

[0002] Vertical drilling equipment is a device used to drill vertically into the ground, especially in oil and gas exploration and production. It is a key tool for obtaining underground oil and gas resources. The working principle of the vertical drilling device is to measure and process the well deviation data through the instruments carried by the system. When a well deviation trend is detected, the hydraulic components are started, and the telescopic mechanism is used to apply force to the well wall to resist the well deviation trend, so that the tool and the drill bit generate force toward the lower side of the wellbore to achieve the purpose of reducing the inclination. When the wellbore is completely vertical, the telescopic mechanism is fully extended and the same force is applied to the well wall to center the drill bit and keep the wellbore drilled in the vertical direction. This is a fully automatic and repetitive process that does not require human intervention.

[0003] The authorization publication number "CN110965940A" records "an automatic vertical drilling device, which includes a casing sleeved outside the drilling drive shaft, and the casing and the drive shaft are connected by a bearing; a pressure conversion cylinder is arranged outside the casing, and the upper and lower ends of the pressure conversion cylinder are fixedly connected to the casing through an upper sealing end and a deflection correction end respectively, and a pressure chamber is arranged between the pressure conversion cylinder and the casing; an annular first piston that moves up and down is arranged in the pressure chamber, and a plurality of push plates are arranged around the outer periphery of the deflection correction end, and a drainage hole is opened on the drive shaft, and the drainage hole is connected to the upper end of the pressure chamber through a corresponding drainage channel arranged on the casing. While realizing the balanced pressure difference between the inside and outside of the drill tool, the present invention utilizes the pressure of the drilling fluid itself to realize the deflection correction function of the drill bit, does not require the help of other energy, has the advantages of good deflection correction effect and energy saving, and is technically easier to realize."

[0004] The above patent is applied to vertical drilling, and a drilling correction mechanism is set near the drill bit end, and the pressure of high-pressure water discharged from the water hole during drilling is converted into hydraulic pressure for correcting the drill bit. When working, the device is installed near the drill bit end, and the transmission shaft drives the drill bit to rotate at high speed. The high-pressure drilling fluid discharged from the wellbore enters the pressure chamber through the drainage hole opened by the transmission shaft. The high-pressure drilling fluid pushes the first piston downward and transmits the pressure to the hydraulic oil under the first piston. The hydraulic oil works on the hydraulic mechanism, pushing the push plate to support the well wall, and the reaction force of the well wall also pushes the push plate. The push plates in all directions act simultaneously to avoid the drill bit from tilting and achieve the purpose of drilling correction. However, the interference of the drill pipe on the drill bit tilt during the actual vertical drilling operation is ignored. The drill pipe is manually docked, which is very easy to cause the drill bit to deflect during vertical drilling due to the manual docking error between the drill pipes, resulting in real-time correction of the drill bit in the later stage, thereby reducing the efficiency of vertical drilling operations. For this reason, we propose a vertical drilling device and method. Summary of the invention

[0005] The purpose of the present invention is to provide a vertical drilling device and method, which aims to use mechanical docking of drill pipes instead of manual docking, avoid the errors caused by drill pipe docking, eliminate the deflection of the drill bit during vertical drilling, effectively reduce the real-time correction of the drill bit, and improve the efficiency of vertical drilling operations.

[0006] To achieve the above object, the present invention provides the following technical solutions: A vertical drilling device includes a frame; A feeding mechanism, wherein the feeding mechanism is arranged at a side end of the frame; A pipe box, the pipe box is fixedly connected to the top of the frame, and two parallel electromagnetic chucks are arranged between the inner walls of the pipe box; and The loading and unloading mechanism is arranged between the inner walls of the pipe box, and the loading and unloading mechanism is connected to the two electromagnetic chucks to move the two electromagnetic chucks.

[0007] As a preferred solution of the present invention, the loading and unloading mechanism includes a pushing assembly, a lifting assembly, a limiting assembly, a connecting rod assembly and a positioning assembly. The connecting rod assembly is arranged between the inner walls of the pipe box, and the connecting rod assembly is connected to two electromagnetic suction cups. The pushing assembly is arranged between the inner walls of the pipe box, and the pushing assembly is connected to the connecting rod assembly. The limiting assembly is arranged at the side end of the pushing assembly, and the limiting assembly is connected to the connecting rod assembly. The lifting assembly is arranged between the inner walls of the pipe box, and the lifting assembly is connected to the pushing assembly. The positioning assembly is arranged at the side end of the frame, and the positioning assembly is connected to the pushing assembly.

[0008] As a preferred solution of the present invention, the lifting assembly includes a hollow box and two first electric push rods, the hollow box is arranged between the inner walls of the pipe box, the two first electric push rods are fixedly connected to the bottom of the frame, the output ends of the two first electric push rods extend between the inner walls of the pipe box, and the output ends of the two first electric push rods are both connected to the hollow box.

[0009] As a preferred scheme of the present invention, the pushing assembly includes a first limit groove, a first limit block, a motor groove, a pushing motor, a first screw rod and a first slider, the motor groove is opened at the side end of the pipe box, the motor groove corresponds to the hollow box, the pushing motor is fixedly connected to the side end of the hollow box, the pushing motor is located between the inner walls of the pushing motor, the first screw rod is rotatably connected between the inner walls of the hollow box, one end of the first screw rod extends to the side end of the hollow box, and the extended end of the first screw rod is fixedly connected to the output end of the pushing motor, the first slider is sleeved on the circumferential surface of the first screw rod, and the first slider is located between the inner walls of the hollow box, there are two first limit grooves, two first limit grooves are opened at two side ends of the hollow box, the two first limit grooves are connected to the inner wall of the hollow box, there are two first limit blocks, the two first limit blocks slide between the inner walls of the two first limit grooves, and the two first limit blocks are connected to the first slider.

[0010] As a preferred solution of the present invention, the connecting rod assembly includes a push-pull rod, a flap and a U-shaped stopper, the flap is rotatably connected between the inner walls of the hollow box through a hinge shaft, the flap is connected to two electromagnetic suction cups, the U-shaped stopper is fixedly connected between the inner walls of the hollow box, the U-shaped stopper is located on the lower side of the flap, the push-pull rod is arranged between the inner walls of the hollow box, one end of the push-pull rod is rotatably connected to the flap, and the other end of the push-pull rod is rotatably connected to the first slider.

[0011] As a preferred solution of the present invention, the limiting assembly includes a accommodating groove, an arc plate, an extension frame, an arc groove and a limiting rod. The accommodating groove is opened on the other side of the pipe box, and the accommodating groove corresponds to the hollow box. Two arc plates are provided, and the two arc plates are fixedly connected to one side of the hollow box, and the two arc plates are located between the inner walls of the accommodating groove. Two extension frames are provided, and the two extension frames are fixedly connected to the top of the flap, and the two extension frames are located between the inner walls of the two arc plates. Two arc grooves are provided, and the two arc grooves are opened between the inner walls of the two arc plates. Two limiting rods are provided, and the two limiting rods slide between the inner walls of the two arc grooves, and the two limiting rods are both connected to the two extension frames.

[0012] As a preferred solution of the present invention, the positioning assembly includes a positioning block and a laser locator, the positioning block is fixedly connected to the side end of the hollow box, the positioning block is located between the inner walls of the two arc plates, the laser locator is fixedly connected to the side end of the pipe box, the laser locator corresponds to the positioning block up and down, and the emitting end of the laser locator faces the positioning block.

[0013] As a preferred solution of the present invention, the feeding mechanism includes a fixed plate, a rotating assembly, a U-shaped plug-in block, a receiving box, a clamping block, a bolt, a lifting block, a curved guide rod, a buffer sleeve, a second limit block, a mounting groove, a rotating motor, a rubber pressure pad, a second screw rod, a driving motor, an embedding groove and a second limit groove. The fixed plate is fixedly connected to the side end of the pipe box, the receiving box is arranged on the upper side of the fixed plate, and two U-shaped plug-in blocks are provided. The two U-shaped plug-in blocks are fixedly connected to the side end of the pipe box, and the two U-shaped plug-in blocks are fixedly connected to the side end of the pipe box. Located on both sides of the storage box, there are two card blocks, the two card blocks are inserted between the inner walls of the two U-shaped plug-in blocks, the two card blocks are fixedly connected to the storage box, and the two card blocks are threadedly fixed with the two U-shaped plug-in blocks by two bolts, the rotating assembly is fixedly connected to the top of the fixed disk, and the rotating assembly is located between the inner walls of the storage box, the arc guide rod is fixedly connected between the inner walls of the storage box, and the arc guide rod corresponds to the two electromagnetic suction cups, and the second screw rod is rotatably connected to the inner wall of the storage box. The cam is connected to the top of the storage box, and the output end of the drive motor is fixedly connected to the extended end of the second screw rod. The lifting block is sleeved on the surface of the lifting block and the arc guide rod. The mounting groove is arranged at the top of the lifting block, and the embedded groove is arranged at the top of the storage box. The embedded groove corresponds to the mounting groove up and down. The rotating motor is fixedly connected between the inner walls of the mounting groove, and the output end of the rotating motor extends to the bottom of the lifting block. The rubber pressing pad is fixedly connected to the output end of the rotating motor, and the rubber pressing pad is located at the lower side of the lifting block. The buffer sleeve is fixedly connected to the bottom of the lifting block, and the buffer sleeve is sleeved on the circumferential surface of the second screw rod. Two second limiting grooves are provided, and two second limiting grooves are provided at two side ends of the storage box. The two second limiting grooves are both connected to the inner wall of the storage box. Two second limiting blocks are provided, and the two second limiting blocks slide between the inner walls of the two second limiting grooves, and the two second limiting blocks are both connected to the lifting block.

[0014] As a preferred solution of the present invention, a second electric push rod is fixedly connected to the bottom of the flap, the second electric push rod is located between the two electromagnetic suction cups, and the output end of the second electric push rod extends to the top of the flap.

[0015] A vertical drilling method comprises the following steps: S1. Lift the rod: The output ends of the two first electric push rods contract to pull the hollow box down to the bottom of the pipe box. Multiple drill rods are stacked in the pipe box. Two electromagnetic suction cups electromagnetically absorb a single drill rod. The two first electric push rods are powered on to start. The output ends of the two first electric push rods extend to lift the hollow box and the flap, pushing the motor to move upward. The two electromagnetic suction cups lift the single drill rod. The laser locator detects the position of the positioning block in real time by emitting infrared laser. When the single drill rod is lifted to the highest position, the two first electric push rods are powered off and stopped, thereby lifting the single drill rod. S2, backswing: After the single drill rod is lifted, the pushing motor is powered on to start, and the output end of the pushing motor drives the first screw rod to rotate. The first screw rod pushes the first slider close to the accommodation box through the sliding cooperation with the first slider. The first slider pushes the push-pull rod in one direction, so that the push-pull rod pushes the flap to deflect in the hollow box, and the flap drives the two electromagnetic suction cups to flip. The two electromagnetic suction cups flip and lift the single drill rod, and flip the single drill rod to between the inner walls of the accommodation box, so that the single drill rod is located between the arc guide rod and the two electromagnetic suction cups, so as to realize the lifting of the single drill rod; S3, Docking: After a single drill rod is put on, the two electromagnetic suction cups are powered off and demagnetized, and the driving motor is powered on to start. The output end of the driving motor drives the second screw to rotate, and the second screw presses the lifting block downward through the sliding cooperation with the lifting block, so that the lifting block drives the rotating motor and the rubber pressing pad to press down, and the rubber pressing pad presses down the upper drill rod, and the bottom of the upper drill rod is inserted into the rotating assembly, and the upper drill rod corresponds to the lower drill rod up and down, and the rotating assembly clamps the lower drill rod at the same time, and the rotating motor is powered on again to start the rotating motor, and the output end of the rotating motor drives the rubber pressing pad to rotate, and the rubber pressing pad drives the upper drill rod to rotate, so that the two corresponding drill rods up and down are threadedly connected, so as to achieve the connection of the two drill rods; S4, disconnection: When it is necessary to cancel the threaded connection between the two drill rods, the rotating assembly pulls up the two connected drill rods, so that the upper drill rod moves into the accommodation box, and the lower drill rod is clamped between the arc guide rod and the two electromagnetic suction cups. At the same time, the second screw rod cooperates with the lifting block through sliding, and the rubber pressing pad is pressed against the upper drill rod. The rotating motor drives the rubber pressing pad to rotate in the opposite direction, so that the upper and lower drill rods are released from the threaded connection, and then the upper and lower drill rods are disconnected; S5, Downswing: After the upper and lower drill rods are disconnected, the two electromagnetic suction cups electromagnetically suction the single drill rod on the upper side, and the push motor is energized to drive the first screw rod to rotate. The first screw rod pushes the first slider to reset through the sliding cooperation with the first slider. The first slider pulls the push-pull rod back to the inner walls of the hollow box. The two electromagnetic suction cups then move the single drill rod to between the inner walls of the pipe box. The two electromagnetic suction cups are powered off and demagnetized, and then the second electric push rod is powered on to start. The output end of the second electric push rod is extended to push the single drill rod on the upper side of the two electromagnetic suction cups into the pipe box, thereby realizing the lowering of the single drill rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In this solution, when a single drill rod is raised or lowered, the first slider pushes and pulls the push-pull rod, which in turn pushes the flap to deflect, and the flap drives the single drill rod to move through two electromagnetic suction cups, thereby moving the single drill rod to the accommodating box or taking the single drill rod out of the accommodating box, thereby raising or lowering the single drill rod. By clamping the single drill rod between the arc guide rod and the two electromagnetic suction cups, the upper and lower drill rods in the accommodating box and the rotating assembly are vertically aligned, and mechanical docking of the drill rods is used instead of manual docking to avoid errors caused by drill rod docking, eliminate the deflection of the drill bit during vertical drilling, effectively reduce real-time correction of the drill bit, and improve the efficiency of vertical drilling operations.

[0017] In this solution, when a single drill rod is lifted, the output ends of the two first electric push rods contract to pull the hollow box down to the bottom of the pipe box, where multiple drill rods are stacked. The two electromagnetic suction cups electromagnetically absorb the single drill rod, and the two first electric push rods are powered on to start. The output ends of the two first electric push rods extend to lift the hollow box and the flap, pushing the motor to move upward, and the two electromagnetic suction cups lift the single drill rod, thereby lifting the single drill rod, effectively lifting the single drill rod from multiple drill rods, and selecting the single drill rod without manual selection. The mechanical structure increases the drill rod selection capability of the vertical drilling device, reduces the workload of the operator of the vertical drilling device, and improves the working efficiency of the vertical drilling device.

[0018] In this solution, the two limit rods guide the flipping movement of the flap in an arc through sliding cooperation with the two arc grooves, thereby limiting the maximum and minimum deflection angles of the flap, ensuring the stable deflection of the flap, the two electromagnetic suction cups and the single drill pipe, avoiding the demagnetization and falling off of the single drill pipe, and ensuring the clamping stability of the vertical drilling device on the single drill pipe.

[0019] In this solution, during the lifting and lowering process of the rubber pressure pad, the output end of the driving motor drives the second screw to rotate, and the second screw lifts the lifting block by sliding with the lifting block, thereby realizing the lifting and lowering of the rotating motor and the rubber pressure pad. When the rubber pressure pad contacts a single drill rod, the rubber pressure pad can drive the single drill rod to rotate, and the rotating assembly clamps or lifts the drill rod, so that the upper and lower drill rods can be threadedly connected or released from the threaded connection, thereby realizing the rapid docking or rapid disconnection of the upper and lower drill rods.

[0020] In this solution, the second electric push rod is used to lift the drill rod between the two electromagnetic suction cups, so as to push the drill rod down to the inner walls of the pipe box to achieve rapid rod removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the operation of a vertical drilling device of the present invention; Figure 2 A first perspective stereoscopic diagram of a vertical drilling device according to the present invention; Figure 3 A second perspective stereoscopic diagram of a vertical drilling device according to the present invention; Figure 4 A first half cross-sectional view of a vertical drilling device according to the present invention; Figure 5 A second half cross-sectional view of a vertical drilling device according to the present invention; Figure 6 A half-section diagram of a loading and unloading mechanism of a vertical drilling device of the present invention; Figure 7 A first half cross-sectional view of a feed mechanism of a vertical drilling device of the present invention; Figure 8 A second half cross-sectional view of a feed mechanism of a vertical drilling device of the present invention; Fig. 9 An exploded diagram of a feed mechanism of a vertical drilling device of the present invention; Fig.10 This is an exploded view of a loading and unloading mechanism of a vertical drilling device of the present invention.

[0022] In the figure: 1, frame; 2, pipe box; 3, hollow box; 4, receiving slot; 5, first electric push rod; 6, flap; 7, electromagnetic suction cup; 8, arc plate; 9, extension frame; 10, arc slot; 11, limit rod; 12, second electric push rod; 13, first limit slot; 14, first limit block; 15, motor slot; 16, push motor; 17, first screw rod; 18, push-pull rod; 19, first slide block; 21, U-shaped stopper; 22. Fixed plate; 23. Rotating assembly; 24. U-shaped plug-in block; 25. Accommodating box; 26. Block; 27. Bolt; 28. Lifting block; 29. ​​Arc guide rod; 30. Buffer sleeve; 31. Second limit block; 32. Mounting groove; 33. Rotating motor; 34. Rubber pressure pad; 35. Second screw rod; 36. Driving motor; 37. Embedded groove; 38. Positioning block; 39. Laser locator; 40. Second limit groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1: Reference Figure 1 - Fig.10 , a vertical drilling device, comprising: Frame 1; A feeding mechanism, the feeding mechanism is arranged at a side end of the frame 1; A pipe box 2, the pipe box 2 is fixedly connected to the top of the frame 1, and two parallel electromagnetic chucks 7 are arranged between the inner walls of the pipe box 2; and The loading and unloading mechanism is arranged between the inner walls of the pipe box 2 , and is connected to the two electromagnetic chucks 7 to move the two electromagnetic chucks 7 .

[0025] In the present invention, the frame 1 is used to support and fix the pipe box 2, the feeding mechanism is used for docking, disconnecting and drilling between drill rods, the pipe box 2 is used to accommodate the loading and unloading mechanism, and the pipe box 2 is used to support and fix the feeding mechanism, and the loading and unloading mechanism is connected to the two electromagnetic suction cups 7 to move the two electromagnetic suction cups 7.

[0026] The loading and unloading mechanism includes a pushing assembly, a lifting assembly, a limiting assembly, a connecting rod assembly and a positioning assembly. The connecting rod assembly is arranged between the inner walls of the pipe box 2, and the connecting rod assembly is connected to the two electromagnetic suction cups 7. The pushing assembly is arranged between the inner walls of the pipe box 2, and the pushing assembly is connected to the connecting rod assembly. The limiting assembly is arranged at the side end of the pushing assembly, and the limiting assembly is connected to the connecting rod assembly. The lifting assembly is arranged between the inner walls of the pipe box 2, and the lifting assembly is connected to the pushing assembly. The positioning assembly is arranged at the side end of the frame 1, and the positioning assembly is connected to the pushing assembly.

[0027] In the present invention, the connecting rod assembly is used to move the single drill rod up and down, the pushing assembly is used to provide power for the movement of the single drill rod, the limiting assembly is used to guide the up and down flipping movement of the single drill rod, the lifting assembly is used to magnetically fix the single drill rod with two electromagnetic suction cups 7, and the positioning assembly is used to trigger the up and down movement of the single drill rod.

[0028] The lifting assembly includes a hollow box 3 and two first electric push rods 5. The hollow box 3 is arranged between the inner walls of the pipe box 2. The two first electric push rods 5 are fixedly connected to the bottom of the frame 1. The output ends of the two first electric push rods 5 extend between the inner walls of the pipe box 2, and the output ends of the two first electric push rods 5 are both connected to the hollow box 3.

[0029] In the present invention, the hollow box 3 is used to accommodate the flap 6, and the hollow box 3 is used to support and fix the first screw rod 17, the driving motor 16 and the U-shaped stopper 21. The two first electric push rods 5 are used to lift the hollow box 3. When lifting a single drill rod, the output ends of the two first electric push rods 5 are contracted to pull the hollow box 3 down to the bottom of the pipe box 2. Multiple drill rods are stacked in the pipe box 2. The two electromagnetic suction cups 7 are used to electromagnetically absorb the single drill rod. The two first electric push rods 5 are powered on to start the two first electric push rods 5. The output end of an electric push rod 5 extends to lift the hollow box 3 and the flap 6, pushing the motor 16 to move upward, and the two electromagnetic suction cups 7 lift the single drill rod, thereby lifting the single drill rod, effectively lifting the single drill rod from multiple drill rods, and selecting the single drill rod without manual selection of the single drill rod. The mechanical structure increases the drill rod selection capability of the vertical drilling device, reduces the workload of the vertical drilling device operator, and improves the working efficiency of the vertical drilling device.

[0030] The pushing assembly includes a first limiting groove 13, a first limiting block 14, a motor groove 15, a pushing motor 16, a first screw rod 17 and a first slider 19. The motor groove 15 is opened at the side end of the pipe box 2, and the motor groove 15 corresponds to the hollow box 3. The pushing motor 16 is fixedly connected to the side end of the hollow box 3. The pushing motor 16 is located between the inner walls of the pushing motor 16. The first screw rod 17 is rotatably connected between the inner walls of the hollow box 3. One end of the first screw rod 17 extends to the side end of the hollow box 3, and the extended end of the first screw rod 17 is connected to the pushing motor 16. The output end of the driving motor 16 is fixedly connected, the first slider 19 is sleeved on the circumferential surface of the first screw rod 17, and the first slider 19 is located between the inner walls of the hollow box 3. Two first limit grooves 13 are provided, and the two first limit grooves 13 are opened at the two side ends of the hollow box 3. The two first limit grooves 13 are connected to the inner wall of the hollow box 3. Two first limit blocks 14 are provided, and the two first limit blocks 14 slide between the inner walls of the two first limit grooves 13. The two first limit blocks 14 are connected to the first slider 19.

[0031] In the present invention, the motor slot 15 is used to accommodate the pushing motor 16, and the pushing motor 16 is used to drive the first screw rod 17 to rotate. The first screw rod 17 pushes the first slider 19 to reciprocate between the inner walls of the hollow box 3 by sliding cooperation with the first slider 19. The first slider 19 is used to push and pull the push-pull rod 18. The two first limit grooves 13 are used to accommodate the sliding of the two first limit blocks 14. The two first limit blocks 14 guide the movement of the first slider 19 by sliding cooperation with the two first limit grooves 13. When a single drill rod is raised or lowered, the output end of the pushing motor 16 drives the first screw rod 17 to rotate. The first screw rod 17 pushes the first slider 19 to reciprocate between the inner walls of the hollow box 3 by sliding cooperation with the first slider 19, thereby providing power for the upper and lower rods of the single drill rod.

[0032] The connecting rod assembly includes a push-pull rod 18, a flap 6 and a U-shaped stopper 21. The flap 6 is rotatably connected to the inner walls of the hollow box 3 through a hinge shaft. The flap 6 is connected to two electromagnetic suction cups 7. The U-shaped stopper 21 is fixedly connected to the inner walls of the hollow box 3. The U-shaped stopper 21 is located on the lower side of the flap 6. The push-pull rod 18 is arranged between the inner walls of the hollow box 3. One end of the push-pull rod 18 is rotatably connected to the flap 6, and the other end of the push-pull rod 18 is rotatably connected to the first slider 19.

[0033] In the present invention, the flap 6 is used to support and fix the second electric push rod 12 and the two electromagnetic suction cups 7, the U-shaped stopper 21 is used to support and fix the flap 6, and the push-pull rod 18 is used to push the flap 6 to deflect. When a single drill rod is moved up and down, the first slider 19 pushes and pulls the push-pull rod 18, and the push-pull rod 18 then pushes the flap 6 to deflect, and the flap 6 drives the single drill rod to move through the two electromagnetic suction cups 7, and then realizes moving the single drill rod to the storage box 25 or taking out the single drill rod from the storage box 25, and then realizes the up and down of the single drill rod, by clamping the single drill rod between the arc guide rod 29 and the two electromagnetic suction cups 7, so that the upper and lower drill rods in the storage box 25 and the rotating assembly 23 are vertically corresponding, and mechanical docking of the drill rods is used instead of manual docking to avoid the error caused by the docking of the drill rods, eliminate the deflection caused by the drill bit during vertical drilling, effectively reduce the real-time correction of the drill bit, and improve the efficiency of vertical drilling operations.

[0034] The limiting assembly includes a receiving groove 4, an arc plate 8, an extension frame 9, an arc groove 10 and a limiting rod 11. The receiving groove 4 is opened on the other side of the pipe box 2, and the receiving groove 4 corresponds to the hollow box 3. Two arc plates 8 are provided, and the two arc plates 8 are fixedly connected to one side of the hollow box 3, and the two arc plates 8 are located between the inner walls of the receiving groove 4. Two extension frames 9 are provided, and the two extension frames 9 are fixedly connected to the top of the flap 6, and the two extension frames 9 are located between the inner walls of the two arc plates 8. Two arc grooves 10 are provided, and the two arc grooves 10 are opened between the inner walls of the two arc plates 8. Two limiting rods 11 are provided, and the two limiting rods 11 slide between the inner walls of the two arc grooves 10, and the two limiting rods 11 are both connected to the two extension frames 9.

[0035] In the present invention, the accommodating groove 4 is used to accommodate two arc plates 8, two extension frames 9 and two limit rods 11. The two extension frames 9 are used to support and fix the two limit rods 11. The two arc grooves 10 are used to accommodate the sliding of the two limit rods 11. The two limit rods 11 guide the flipping movement of the flap 6 in an arc through the sliding cooperation with the two arc grooves 10, and then limit the maximum and minimum deflection angles of the flap 6, thereby ensuring the stable deflection of the flap 6, the two electromagnetic suction cups 7 and the single drill pipe, avoiding the demagnetization and falling off of the single drill pipe, and ensuring the clamping stability of the vertical drilling device on the single drill pipe.

[0036] The positioning assembly includes a positioning block 38 and a laser locator 39. The positioning block 38 is fixedly connected to the side end of the hollow box 3. The positioning block 38 is located between the inner walls of the two arc plates 8. The laser locator 39 is fixedly connected to the side end of the pipe box 2. The laser locator 39 corresponds to the positioning block 38 up and down, and the emitting end of the laser locator 39 faces the positioning block 38.

[0037] In the present invention, the positioning block 38 is used to block the infrared laser emitted by the laser locator 39. The laser locator 39 monitors the highest and lowest moving positions of a single drill rod in real time by emitting infrared laser to the positioning block 38, and determines whether to trigger the power-on start or power-off shutdown of the motor slot 15, the drive motor 36, the rotating motor 33 and the two first electric push rods 5, thereby indirectly controlling the upper and lower rods of the single drill rod.

[0038] The feeding mechanism includes a fixed plate 22, a rotating assembly 23, a U-shaped plug-in block 24, a receiving box 25, a clamping block 26, a bolt 27, a lifting block 28, a curved guide rod 29, a buffer sleeve 30, a second limit block 31, a mounting groove 32, a rotating motor 33, a rubber pressing pad 34, a second screw rod 35, a driving motor 36, an embedding groove 37 and a second limit groove 40. The fixed plate 22 is fixedly connected to the side end of the pipe box 2, the receiving box 25 is arranged on the upper side of the fixed plate 22, and two U-shaped plug-in blocks 24 are provided. The two U-shaped plug-in blocks 24 are fixedly connected to the side end of the pipe box 2, and the two U-shaped plug-in blocks 24 are fixedly connected to the side end of the pipe box 2. The block 24 is located on both sides of the receiving box 25, and two card blocks 26 are provided. The two card blocks 26 are inserted between the inner walls of the two U-shaped plug-in blocks 24. The two card blocks 26 are fixedly connected to the receiving box 25, and the two card blocks 26 are threadedly fixed to the two U-shaped plug-in blocks 24 by two bolts 27. The rotating component 23 is fixedly connected to the top of the fixed plate 22, and the rotating component 23 is located between the inner walls of the receiving box 25. The arc guide rod 29 is fixedly connected between the inner walls of the receiving box 25, and the arc guide rod 29 corresponds to the two electromagnetic suction cups 7. The second screw rod 35 is rotatably connected to the receiving box 25. The inner wall of the storage box 25, one end of the second screw rod 35 extends to the top of the storage box 25, the drive motor 36 is fixedly connected to the top of the storage box 25, the output end of the drive motor 36 is fixedly connected to the extension end of the second screw rod 35, the lifting block 28 is sleeved on the surface of the lifting block 28 and the arc guide rod 29, the installation groove 32 is opened at the top of the lifting block 28, the embedded groove 37 is opened at the top of the storage box 25, the embedded groove 37 corresponds to the installation groove 32 up and down, the rotating motor 33 is fixedly connected between the inner walls of the mounting groove 32, the output end of the rotating motor 33 extends to the bottom of the lifting block 28, the rubber pressing pad 34 is fixedly connected to the output end of the rotating motor 33, the rubber pressing pad 34 is located at the lower side of the lifting block 28, the buffer sleeve 30 is fixedly connected to the bottom of the lifting block 28, and the buffer sleeve 30 is sleeved on the circumferential surface of the second screw rod 35, and two second limit grooves 40 are provided. The two second limit grooves 40 are opened at the two side ends of the accommodating box 25, and the two second limit grooves 40 are both connected to the inner wall of the accommodating box 25. Two second limit blocks 31 are provided, and the two second limit blocks 31 slide between the inner walls of the two second limit grooves 40, and the two second limit blocks 31 are both connected to the lifting block 28.

[0039] In the present invention, the fixed plate 22 is used to support the fixed rotating assembly 23, the accommodating box 25 is used to accommodate the lifting block 28, the arc guide rod 29, the buffer sleeve 30, the rotating motor 33 and the rubber pressing pad 34, the two U-shaped plug-in blocks 24 are used to accommodate the two card blocks 26, the two card blocks 26 are used to support the fixed accommodating box 25, the rotating assembly 23 is used to clamp and lift the drill rod, the arc guide rod 29 guides the lifting block 28 to lift and lower by sliding with the lifting block 28, the second screw rod 35 lifts and lowers the lifting block 28 by sliding with the lifting block 28, the driving motor 36 is used to drive the second screw rod 35 to rotate, the lifting block 28 is used to support the fixed buffer sleeve 30 and the rotating motor 33, the mounting groove 32 is used to accommodate the fixed rotating motor 33, the embedded groove 37 is used to accommodate the rotating motor 33, and the rotating motor 33 is used to drive the rubber pressing pad 3 4 is rotated, the buffer sleeve 30 is used to buffer the collision between the lifting block 28 and the inner wall of the accommodating box 25, the two second limiting grooves 40 are used to accommodate the two second limiting blocks 31, the two second limiting blocks 31 guide the lifting and lowering of the lifting block 28 by sliding cooperation with the two second limiting grooves 40, in the lifting and lowering movement of the rubber pressing pad 34, the output end of the driving motor 36 drives the second screw rod 35 to rotate, the second screw rod 35 lifts and lowers the lifting block 28 by sliding cooperation with the lifting block 28, and then realizes the lifting and lowering of the rotating motor 33 and the rubber pressing pad 34, when the rubber pressing pad 34 contacts with a single drill rod, the rubber pressing pad 34 can drive the single drill rod to rotate, the rotating assembly 23 clamps or lifts the drill rod, so that the upper and lower drill rods can be threaded or released, and the upper and lower drill rods can be quickly connected or disconnected.

[0040] A second electric push rod 12 is fixedly connected to the bottom of the flap 6 . The second electric push rod 12 is located between the two electromagnetic suction cups 7 , and an output end of the second electric push rod 12 extends to the top of the flap 6 .

[0041] In the present invention, the second electric push rod 12 is used to lift the drill rod between the two electromagnetic suction cups 7, so as to push the drill rod down to the inner walls of the pipe box 2, thereby realizing rapid rod removal.

[0042] A vertical drilling method comprises the following steps: S1. Lift the rod: The output ends of the two first electric push rods 5 contract to pull the hollow box 3 down to the bottom of the pipe box 2. Multiple drill rods are stacked in the pipe box 2. The two electromagnetic suction cups 7 electromagnetically absorb a single drill rod. The two first electric push rods 5 are powered on to start. The output ends of the two first electric push rods 5 extend to lift the hollow box 3 and the flap 6, pushing the motor 16 to move upward. The two electromagnetic suction cups 7 lift the single drill rod. The laser locator 39 detects the position of the positioning block 38 in real time by emitting infrared lasers. When the single drill rod is lifted to the highest position, the two first electric push rods 5 are powered off and stopped, thereby realizing the lifting of the single drill rod. S2, backswing: After the single drill rod is lifted, the push motor 16 is powered on to start, and the output end of the push motor 16 drives the first screw rod 17 to rotate. The first screw rod 17 pushes the first slider 19 close to the accommodating box 25 through the sliding cooperation with the first slider 19. The first slider 19 pushes the push-pull rod 18 in one direction, so that the push-pull rod 18 pushes the flap 6 to deflect in the hollow box 3. The flap 6 drives the two electromagnetic suction cups 7 to flip, and the two electromagnetic suction cups 7 flip and lift the single drill rod, flipping the single drill rod to between the inner walls of the accommodating box 25, so that the single drill rod is located between the curved guide rod 29 and the two electromagnetic suction cups 7, so as to realize the lifting of the single drill rod; S3, Docking: After a single drill rod is put on, the two electromagnetic suction cups 7 are powered off and demagnetized, and the drive motor 36 is powered on to start. The output end of the drive motor 36 drives the second screw rod 35 to rotate. The second screw rod 35 presses down the lifting block 28 by sliding with the lifting block 28, so that the lifting block 28 drives the rotating motor 33 and the rubber pressing pad 34 to press down. The rubber pressing pad 34 presses down the upper drill rod, and the bottom of the upper drill rod is inserted into the rotating assembly 23, and the upper drill rod corresponds to the lower drill rod up and down. At the same time, the rotating assembly 23 clamps the lower drill rod, and the rotating motor 33 is powered on again to start the rotating motor 33. The output end of the rotating motor 33 drives the rubber pressing pad 34 to rotate, and the rubber pressing pad 34 drives the upper drill rod to rotate, so that the two corresponding drill rods are threadedly connected, so as to achieve the connection of the two drill rods; S4, disconnection: When the two drill rods need to be unthreaded, the rotating assembly 23 pulls up the two drill rods, so that the upper drill rod moves into the accommodating box 25, and the lower drill rod is clamped between the arc guide rod 29 and the two electromagnetic suction cups 7. At the same time, the second screw rod 35 slides with the lifting block 28, and the rubber pressing pad 34 is pressed against the upper drill rod. The rotating motor 33 drives the rubber pressing pad 34 to rotate in the opposite direction, so that the upper and lower drill rods are unthreaded, and then the upper and lower drill rods are disconnected; S5, Downswing: After the upper and lower drill rods are disconnected, the two electromagnetic suction cups 7 electromagnetically absorb the single drill rod on the upper side, and the push motor 16 is energized to drive the first screw rod 17 to rotate. The first screw rod 17 pushes the first slider 19 to reset by sliding with the first slider 19. The first slider 19 pulls the push-pull rod 18 back to the inner walls of the hollow box 3. The two electromagnetic suction cups 7 then move the single drill rod to between the inner walls of the pipe box 2. The two electromagnetic suction cups 7 are powered off and demagnetized, and then the second electric push rod 12 is powered on to start. The output end of the second electric push rod 12 is extended to push the single drill rod on the upper side of the two electromagnetic suction cups 7 into the pipe box 2, thereby realizing the lowering of the single drill rod.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertical drilling device, characterized in that: include; Frame (1); A feeding mechanism, the feeding mechanism being arranged at a side end of the vehicle frame (1); A pipe box (2), the pipe box (2) being fixedly connected to the top of the vehicle frame (1), and two parallel electromagnetic suction cups (7) being arranged between the inner walls of the pipe box (2); and A loading and unloading mechanism is arranged between the inner walls of the pipe box (2), and the loading and unloading mechanism is connected to the two electromagnetic suction cups (7) to move the two electromagnetic suction cups (7).

2. A vertical drilling device according to claim 1, characterized in that: The loading and unloading mechanism comprises a pushing assembly, a lifting assembly, a limiting assembly, a connecting rod assembly and a positioning assembly, wherein the connecting rod assembly is arranged between the inner walls of the pipe box (2), the connecting rod assembly is connected to two electromagnetic suction cups (7), the pushing assembly is arranged between the inner walls of the pipe box (2), the pushing assembly is connected to the connecting rod assembly, the limiting assembly is arranged at the side end of the pushing assembly, the limiting assembly is connected to the connecting rod assembly, the lifting assembly is arranged between the inner walls of the pipe box (2), the lifting assembly is connected to the pushing assembly, the positioning assembly is arranged at the side end of the frame (1), and the positioning assembly is connected to the pushing assembly.

3. A vertical drilling device according to claim 2, characterized in that: The lifting assembly comprises a hollow box (3) and two first electric push rods (5); the hollow box (3) is arranged between the inner walls of the pipe box (2); the two first electric push rods (5) are fixedly connected to the bottom of the frame (1); the output ends of the two first electric push rods (5) extend between the inner walls of the pipe box (2), and the output ends of the two first electric push rods (5) are both connected to the hollow box (3).

4. A vertical drilling device according to claim 3, characterized in that: The pushing assembly comprises a first limiting groove (13), a first limiting block (14), a motor groove (15), a pushing motor (16), a first screw rod (17) and a first sliding block (19); the motor groove (15) is formed at a side end of the pipe box (2); the motor groove (15) corresponds to the hollow box (3); the pushing motor (16) is fixedly connected to the side end of the hollow box (3); the pushing motor (16) is located between the inner walls of the pushing motor (16); the first screw rod (17) is rotatably connected between the inner walls of the hollow box (3); one end of the first screw rod (17) extends to the side end of the hollow box (3); and the extension of the first screw rod (17) is The extending end is fixedly connected to the output end of the driving motor (16); the first slider (19) is sleeved on the circumferential surface of the first screw rod (17), and the first slider (19) is located between the inner walls of the hollow box (3); two first limit grooves (13) are provided, and the two first limit grooves (13) are opened at two side ends of the hollow box (3); the two first limit grooves (13) are both connected to the inner wall of the hollow box (3); two first limit blocks (14) are provided, and the two first limit blocks (14) slide between the inner walls of the two first limit grooves (13); the two first limit blocks (14) are both connected to the first slider (19).

5. A vertical drilling device according to claim 4, characterized in that: The connecting rod assembly comprises a push-pull rod (18), a flap (6) and a U-shaped stopper (21); the flap (6) is rotatably connected between the inner walls of the hollow box (3) via a hinge shaft; the flap (6) is connected to two electromagnetic suction cups (7); the U-shaped stopper (21) is fixedly connected between the inner walls of the hollow box (3); the U-shaped stopper (21) is located on the lower side of the flap (6); the push-pull rod (18) is arranged between the inner walls of the hollow box (3); one end of the push-pull rod (18) is rotatably connected to the flap (6); and the other end of the push-pull rod (18) is rotatably connected to the first slider (19).

6. A vertical drilling device according to claim 5, characterized in that: The limiting assembly comprises a receiving groove (4), an arc plate (8), an extension frame (9), an arc groove (10) and a limiting rod (11). The receiving groove (4) is opened at the other side of the pipe box (2), and the receiving groove (4) corresponds to the hollow box (3). Two arc plates (8) are provided, and the two arc plates (8) are fixedly connected to one side of the hollow box (3), and the two arc plates (8) are located between the inner walls of the receiving groove (4). Two extension frames (9) are provided, and the two extension frames (9) are fixedly connected to the top of the flap (6), and the two extension frames (9) are located between the inner walls of the two arc plates (8). Two arc grooves (10) are provided, and the two arc grooves (10) are opened between the inner walls of the two arc plates (8). Two limiting rods (11) are provided, and the two limiting rods (11) slide between the inner walls of the two arc grooves (10), and the two limiting rods (11) are connected to the two extension frames (9).

7. A vertical drilling device according to claim 6, characterized in that: The positioning assembly comprises a positioning block (38) and a laser positioner (39); the positioning block (38) is fixedly connected to the side end of the hollow box (3); the positioning block (38) is located between the inner walls of the two arc plates (8); the laser positioner (39) is fixedly connected to the side end of the pipe box (2); the laser positioner (39) corresponds to the positioning block (38) in upper and lower parts; the emission end of the laser positioner (39) faces the positioning block (38).

8. A vertical drilling device according to claim 7, characterized in that: The feeding mechanism comprises a fixed plate (22), a rotating assembly (23), a U-shaped plug-in block (24), a receiving box (25), a clamping block (26), a bolt (27), a lifting block (28), a curved guide rod (29), a buffer sleeve (30), a second limit block (31), a mounting groove (32), a rotating motor (33), a rubber pressing pad (34), a second screw rod (35), a driving motor (36), an embedding groove (37) and a second limit groove (40), wherein the fixed plate (22) is fixedly connected to a side end of the pipe box (2), the receiving box (25) is arranged on the upper side of the fixed plate (22), two U-shaped plug-in blocks (24) are provided, the two U-shaped plug-in blocks (24) are fixedly connected to the side ends of the pipe box (2), and the two U The U-shaped plug-in blocks (24) are located on both sides of the receiving box (25); two of the card blocks (26) are provided, and the two card blocks (26) are inserted between the inner walls of the two U-shaped plug-in blocks (24); the two card blocks (26) are fixedly connected to the receiving box (25), and the two card blocks (26) are threadedly fixed to the two U-shaped plug-in blocks (24) by two bolts (27); the rotating assembly (23) is fixedly connected to the top of the fixed plate (22), and the rotating assembly (23) is located between the inner walls of the receiving box (25); the arc surface guide rod (29) is fixedly connected between the inner walls of the receiving box (25), and the arc surface guide rod (29) corresponds to the two electromagnetic suction cups (7); the second screw rod (35) is rotatably connected to the receiving box (2 5), one end of the second screw rod (35) extends to the top of the accommodating box (25), the driving motor (36) is fixedly connected to the top of the accommodating box (25), the output end of the driving motor (36) is fixedly connected to the extension end of the second screw rod (35), the lifting block (28) is sleeved on the surface of the lifting block (28) and the arc guide rod (29), the mounting groove (32) is opened at the top of the lifting block (28), the embedded groove (37) is opened at the top of the accommodating box (25), the embedded groove (37) corresponds to the mounting groove (32) in the upper and lower parts, the rotating motor (33) is fixedly connected between the inner walls of the mounting groove (32), the output end of the rotating motor (33) extends to the bottom of the lifting block (28), the rubber The pressing pad (34) is fixedly connected to the output end of the rotating motor (33), the rubber pressing pad (34) is located at the lower side of the lifting block (28), the buffer sleeve (30) is fixedly connected to the bottom of the lifting block (28), and the buffer sleeve (30) is sleeved on the circumferential surface of the second screw rod (35), two second limiting grooves (40) are provided, the two second limiting grooves (40) are opened at two side ends of the accommodating box (25), the two second limiting grooves (40) are both connected to the inner wall of the accommodating box (25), two second limiting blocks (31) are provided, the two second limiting blocks (31) slide between the inner walls of the two second limiting grooves (40), and the two second limiting blocks (31) are both connected to the lifting block (28).

9. A vertical drilling device according to claim 8, characterized in that: A second electric push rod (12) is fixedly connected to the bottom of the flap (6), the second electric push rod (12) is located between the two electromagnetic suction cups (7), and the output end of the second electric push rod (12) extends to the top of the flap (6).

10. A vertical drilling method, characterized in that: A vertical drilling device according to claim 9 is used, comprising the following steps: S1. Lift the rod: The output ends of the two first electric push rods (5) are contracted to pull the hollow box (3) down to the bottom of the pipe box (2), and a plurality of drill rods are stacked in the pipe box (2). The two electromagnetic suction cups (7) are electromagnetically sucking a single drill rod, and the two first electric push rods (5) are powered on to start the two first electric push rods (5). The output ends of the two first electric push rods (5) are extended to lift the hollow box (3) and the flap (6), and the motor (16) is pushed to move upward. The two electromagnetic suction cups (7) lift the single drill rod, and the laser locator (39) detects the position of the positioning block (38) in real time by emitting infrared laser. When the single drill rod is lifted to the highest position, the two first electric push rods (5) are powered off and stopped, and the single drill rod is lifted. S2, backswing: After the single drill rod is lifted, the push motor (16) is powered on to start the push motor (16), and the output end of the push motor (16) drives the first screw rod (17) to rotate. The first screw rod (17) pushes the first slider (19) close to the accommodating box (25) by sliding cooperation with the first slider (19). The first slider (19) pushes the push-pull rod (18) unidirectionally, so that the push-pull rod (18) pushes the flap (6) to deflect in the hollow box (3). The flap (6) drives the two electromagnetic suction cups (7) to flip. The two electromagnetic suction cups (7) flip and lift the single drill rod, and flip the single drill rod to between the inner walls of the accommodating box (25), so that the single drill rod is located between the arc guide rod (29) and the two electromagnetic suction cups (7), thereby achieving the lifting of the single drill rod; S3, Docking: After a single drill rod is put on, the two electromagnetic suction cups (7) are powered off and demagnetized, and the drive motor (36) is powered on to start. The output end of the drive motor (36) drives the second screw rod (35) to rotate. The second screw rod (35) presses down the lifting block (28) by sliding with the lifting block (28), so that the lifting block (28) drives the rotating motor (33) and the rubber pressing pad (34) to press down. The rubber pressing pad (34) presses down the upper drill rod, and the bottom of the upper drill rod is inserted into the rotating assembly (23). The upper drill rod corresponds to the lower drill rod in the upper and lower directions. At the same time, the rotating assembly (23) clamps the lower drill rod. The rotating motor (33) is powered on again to start. The output end of the rotating motor (33) drives the rubber pressing pad (34) to rotate. The rubber pressing pad (34) drives the upper drill rod to rotate, so that the two corresponding drill rods are threadedly connected, thereby achieving the connection of the two drill rods. S4, disconnection: When it is necessary to cancel the threaded connection between the two drill rods, the rotating assembly (23) pulls up the two connected drill rods, so that the upper drill rod moves into the accommodating box (25), and the lower drill rod is clamped between the arc guide rod (29) and the two electromagnetic suction cups (7). At the same time, the second screw rod (35) slides with the lifting block (28), and the rubber pressing pad (34) is pressed against the upper drill rod. The rotating motor (33) drives the rubber pressing pad (34) to rotate in the opposite direction, so that the upper and lower drill rods are released from the threaded connection, and then the upper and lower drill rods are disconnected; S5, Downswing: After the upper and lower drill rods are disconnected, the two electromagnetic suction cups (7) electromagnetically absorb the single drill rod on the upper side, and the push motor (16) is powered on to drive the first screw rod (17) to rotate. The first screw rod (17) pushes the first slider (19) to reset by sliding with the first slider (19). The first slider (19) pulls the push-pull rod (18) back between the inner walls of the hollow box (3). The two electromagnetic suction cups (7) then move the single drill rod to between the inner walls of the pipe box (2). The two electromagnetic suction cups (7) are powered off and demagnetized, and then the second electric push rod (12) is powered on to start. The output end of the second electric push rod (12) is extended to push the single drill rod on the upper side of the two electromagnetic suction cups (7) into the pipe box (2), thereby achieving the lowering of the single drill rod.

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