Rotary drilling rig type centering drilling rig

Abstract

According to the rotary drilling rig type centering drilling rig, the drill rod, the positioning block and the guide groove are combined, the drill bit extraction efficiency is improved, the drill bit can be rapidly extracted through the steel wire rope of the lifting winch without lifting the whole drill rod out, and time and power consumption in the drill bit extraction process are remarkably reduced. In addition, through quick connection and disassembly of the connecting rod and the drill rod, tedious operation in the traditional drill rod replacement process is avoided, and efficient utilization and operation continuity of the drill rod are guaranteed. And due to the arrangement of the universal coupling, the drill rod can meet the drilling requirements of various angles, and the operation flexibility is improved. And slurry or compressed air can be injected into the drill hole according to the operation requirement through the pouring channel formed in the drill rod, the drilling environment can be improved, and the operation quality is improved. On the whole, the defects of an existing drill rod structure in the aspects of operation efficiency, safety and adaptability are effectively overcome, and the utilization rate of drilling machine equipment is increased.

Description

Technical Field

[0001] The invention relates to the technical field of rotary drilling rigs, in particular to a rotary drilling rig type centering drilling rig. Background Art

[0002] The existing rotary drilling rig drill rod structure usually adopts the method of penetrating the power head, and the drill bit is fixed at the bottom of the drill rod. When drilling, due to the fixed connection between the drill bit and the drill rod, it leads to great limitations in use, which are specifically manifested as follows: Due to the fixed connection between the power head and the drill rod, the existing drill rod structure requires the entire drill rod to be pulled out of the drill hole when the drill bit is removed. This operation is time-consuming and complicated, especially in deep hole drilling operations, which seriously affects the construction progress and operation efficiency. The drill bit removal process consumes a lot of time and power consumption, affecting the construction efficiency and operation continuity.

[0003] The long-term fixed connection between the drill bit and the drill rod makes the connection part easy to loosen and break, which affects the accurate positioning and operational stability of the drill bit, thus reducing the safety and reliability of the operation. In deep hole drilling operations, the problems of stability and reliability are more prominent, especially in the case of continuous long-term operation, which is more likely to cause mechanical failure or safety accidents of the drill rod and drill bit.

[0004] The telescopic structural design of the existing rotary drilling rig drill rod causes the outer diameter of the drill rod to decrease step by step. The strength of each section of the drill rod is not uniform, the processing is difficult, and it is easy to damage. In addition, the maximum extension length of the drill rod is fixed, which limits the drilling depth. Moreover, the telescopic drill rod can only use the power head that matches it, and the maximum output power of the power head cannot be adjusted, which greatly restricts the usage scenarios.

[0005] The existing drill rod structure is usually unable to flexibly adapt to the drilling requirements of different angles, especially in deep hole drilling operations under complex geological conditions. The limitation of drilling angle reduces the construction efficiency and flexibility. Especially in some narrow spaces or special drilling environments, the existing drill rod structure cannot effectively achieve multi-angle drilling, and the adaptability of the operation is restricted.

[0006] There is usually no injection channel inside the drill pipe, and mud or compressed air cannot be injected into the hole during the drilling process, resulting in the drilling environment not being effectively improved, the drilling quality being difficult to ensure, and affecting the drilling efficiency and construction quality.

[0007] Therefore, improving the drill rod structure and enhancing the efficiency of drill bit extraction and drill rod replacement have become technical problems that need to be urgently solved in the current field of engineering machinery and equipment. Summary of the invention

[0008] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a rotary drilling rig-type centering drill to improve the drill bit extraction efficiency, simplify the drill rod replacement operation, and enhance the operation stability.

[0009] To achieve the above object, the present invention adopts the following technical solution: A rotary drilling rig type centering drilling rig is installed on a mast, and a main winch is arranged on the mast, comprising: A bracket, slidably mounted on the mast and connected to the wire rope of the main winch; A power box, fixed on the bracket, for providing a rotational driving force; The rotating body is rotatably mounted on the power box and driven to rotate by the power box; a lifting winch is mounted on the rotating body; A connecting rod, mounted at the lower end of the rotating body; A drill rod, detachably connected to the lower end of the connecting rod; The drill bit is detachably mounted on the drill rod; the wire rope of the lifting winch is connected to the drill bit.

[0010] Preferably, the power box includes a box body, a rotating shaft and at least one driving unit; the box body is fixed on the bracket; the driving unit is fixed on the box body; the rotating shaft is rotatably mounted on the box body and is transmission-connected to the driving unit; the driving unit is any one of a driving motor or an electric motor.

[0011] Preferably, the rotating body includes a turntable, a pull rod and a universal coupling; the turntable is fixedly connected to the lower end of the rotating shaft; the pull rod is fixed to the lower end of the turntable; the axes of the pull rod, turntable and rotating shaft are collinear; the upper end of the universal coupling is connected to the lower end of the pull rod; the upper end of the connecting rod is connected to the lower end of the universal coupling.

[0012] Preferably, the drill rod is configured in multiple ways; including a rod body and a first joint; the first joint is fixedly arranged at one end of the rod body; the cross-sectional shape of the first joint is a regular polygon; a slot adapted to the first joint is arranged at the other end of the rod body; a first socket is arranged on the first joint; a second socket adapted to the first socket is arranged on the rod body; the first joint of the drill rod is inserted into the slot of another adjacent drill rod, and the two adjacent drill rods are connected and fixed by inserting a pin into the first socket and the second socket.

[0013] Preferably, a second joint adapted to the slot is fixedly provided on the connecting rod; a third socket is provided on the second joint; the second joint of the connecting rod is inserted into the slot of the adjacent drill rod, and the drill rod and the connecting rod are connected and fixed by inserting a pin into the third socket and the first socket.

[0014] Preferably, a perfusion channel is provided inside the drill rod, and the perfusion channel is provided through the drill rod along the axial direction of the drill rod.

[0015] Preferably, a guide groove is provided on the outer wall of the drill rod, and the guide groove extends in a direction parallel to the axis of the drill rod; a positioning groove is provided on the outer wall of one end of the drill rod close to the first joint, and the positioning groove is located on one side of the guide groove and is connected with the guide groove; a positioning block adapted to the guide groove and the positioning groove is provided on the drill bit, and the positioning block can be slidably placed in the guide groove; the positioning block slides along the guide groove to the positioning groove, the drill rod rotates, and the positioning block is clamped in the positioning groove to fix the drill bit on the drill rod; the drill rod rotates in the opposite direction, and the positioning block slides from the positioning groove to the guide groove.

[0016] Preferably, the drill bit comprises a cylinder, a guide sleeve, a cover plate, a baffle and a locking unit; the guide sleeve passes through the cylinder and is fixedly connected to the cylinder; the axis of the guide sleeve is in line with the axis of the cylinder; the positioning block is fixed on the inner wall of the guide sleeve; the wire rope of the lifting winch is connected to the upper end of the cylinder; the bottom of the cylinder is provided with an opening, the cover plate is hinged on the bottom of the cylinder and buckled on the opening; the middle part of the cover plate is provided with a through hole for accommodating the guide sleeve to pass through, the lower end of the guide sleeve passes through the through hole and extends to the bottom of the cover plate; the locking unit comprises a control rod and a hook head; the control rod is slidably arranged on the cylinder; the middle part of the hook head is hinged It is installed in the cylinder, one end of which is hingedly connected to the operating rod, and the other end is integrally provided with a locking block; a lock buckle is fixedly provided on the cover plate; when the cover plate is buckled on the opening of the cylinder, the operating rod is pulled toward the outside of the cylinder, driving the hook head to rotate, and the locking block is plugged and fixed in the lock buckle; a slag inlet hole is provided on the cover plate; an annular groove is provided on the outer side surface of the bottom of the guide sleeve, and the annular groove is located below the cover plate; the baffle plate is located below the cover plate, covering the slag inlet hole, and one end is slidably plugged in the annular groove; excavation teeth are fixedly provided on the lower end surface of the baffle plate; a limit block adapted to the baffle plate is fixedly provided on the lower end surface of the cover plate.

[0017] Preferably, a flow guide pipe is fixedly arranged inside the cylinder, and the axis of the flow guide pipe is parallel to the axis of the cylinder; a first flow guide port connected to the flow guide pipe is arranged at the upper end of the cylinder; and a second flow guide port corresponding to the flow guide pipe is arranged on the cover plate.

[0018] Preferably, it also includes a rod changing device; the rod changing device includes a push rod unit, a rod changing platform and a rod feeding unit; the push rod unit includes a push rod base and a push rod cylinder; the push rod base is fixed on the bracket; the push rod cylinder is fixed on the push rod base; the piston rod of the push rod cylinder is arranged toward the connecting rod; an operation hole adapted to the drill rod is arranged on the rod changing platform; a clamping unit is arranged on one side of the operation hole; the clamping unit includes a vertical shaft, a support rod and two clamping cylinders; the vertical shaft is rotatably mounted on the rod changing platform; the support rod is vertically fixed on one side of the upper end of the vertical shaft; the two clamping cylinders are arranged on the rod changing platform ... two clamping cylinders are arranged on the rod changing platform; the vertical shaft is rotatably mounted on the rod changing platform; the support rod is vertically fixed on one side of the upper end of the vertical shaft; the two clamping cylinders are arranged on the rod changing platform; the vertical shaft is rotatably mounted on the rod changing platform; The scale is fixed on the support rod; the piston rods of the two clamping cylinders are arranged close to each other; a clamping block is fixed on the piston rod of the clamping cylinder; the rod sending unit includes a base, a guide seat, an angle adjustment cylinder and a push rod cylinder; the base is fixed on the rod changing platform; the guide seat is hingedly connected to one end of the base away from the rod changing platform; one end of the angle adjustment cylinder is hinged on the base, and the other end is hinged on the guide seat; a push rod groove is provided on the guide seat; the push rod groove extends toward the axial direction of the working hole; the push rod cylinder is fixed in the push rod groove, and the piston rod of the push rod cylinder is arranged toward the axial direction of the working hole.

[0019] Compared with the prior art, the present invention has the following beneficial effects: Improve drill bit extraction efficiency: The drill rod structure in this application enables the drill bit to be quickly positioned and locked in the drill rod through the cooperation of the positioning block and the guide groove. The drill bit can be extracted by lifting the wire rope of the winch without pulling the entire drill rod out of the borehole, which greatly reduces the time and labor cost of the drill bit removal process and significantly improves the working efficiency.

[0020] Reduce the time of drill rod replacement: The drill rods can be quickly connected and disassembled through the cooperation of joints and slots, avoiding the complicated operation and large amount of time consumption of frequent replacement of drill rods under traditional methods, ensuring the efficient use of drill rods and the continuity of operation. The length of the drill rod is not limited by the structure of the power head, and the application scenarios are wider.

[0021] Improved operation stability and safety: The drill rod structure of the present invention avoids loosening or damage caused by the long-term fixed connection between the drill bit and the drill rod, improves the connection stability between the drill bit and the drill rod, and thus enhances the safety and reliability of the operation.

[0022] Adapt to various drilling angle requirements: Through the configuration of the universal coupling, the drill rod can be used for drilling operations at different angles, which expands the adaptability of drilling operations and is especially suitable for deep hole drilling operations in special operating environments.

[0023] Support mud or compressed air injection function: The injection channel set inside the drill pipe can inject mud or compressed air into the borehole according to operation requirements, which helps to improve the drilling environment and improve the operation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the use state of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the connection relationship between the bracket, the power box, the rotating body, the connecting rod and the drill rod in the present invention; Figure 4 It is a schematic diagram of the connection relationship between the power box, the rotating body and the connecting rod in the present invention; Figure 5 It is a structural schematic diagram of the drill rod in the present invention; Figure 6 It is a structural schematic diagram of the drill bit in the present invention; Figure 7 It is a three-dimensional structural diagram of the drill bit in the present invention; Figure 8 It is the internal structure diagram of the drill bit in the present invention.

[0025] in: 1. Mast; 2. Main winch; 3. Drill bit; 31. Cylinder; 32. Cover plate; 33. Digging teeth; 34. Guide sleeve; 35. Positioning block; 36. Control lever; 37. Slag inlet hole; 38. Hook; 39. Diversion pipe; 310. Lock buckle; 311. Baffle; 312. Stop block; 4. Drill rod; 41. Positioning groove; 42. First joint; 43. Guide groove; 44. Slot; 5. Rod changing platform; 6. Base; 7. Guide seat; 8. angle adjustment cylinder; 9. rotating body; 10. power box; 101. lifting winch; 102. universal coupling; 103. pull rod; 104. turntable; 105. box; 106. drive unit; 107. rotating shaft; 11. bracket; 12. working hole; 13. connecting rod; 131. second joint; 14. vertical shaft; 15. support rod; 16. push rod cylinder; 17. push rod base; 18. cutting head. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 8 As shown, a rotary drilling rig type centering drill is installed on a mast 1 of the rotary drilling rig, and a main winch 2 is arranged on the mast 1, including: The bracket 11 is slidably mounted on the mast 1 and connected to the steel wire rope of the main hoist 2. The bracket 11 is pulled by the main hoist 2 to slide on the mast 1; The power box 10 is fixed on the bracket 11 and is used to provide a rotational driving force; The rotating body 9 is rotatably mounted on the power box 10 and driven to rotate by the power box 10; a lifting winch 101 is mounted on the rotating body 9, and the lifting winch 101 rotates synchronously with the rotating body 9; two lifting winches 101 are configured and are symmetrically arranged on the rotating body 9 with the axis of the rotating body 9 as the center; A connecting rod 13 is mounted on the lower end of the rotating body 9; The drill rod 4 is detachably connected to the lower end of the connecting rod 13, and the axis of the drill rod 4 is collinear with the axis of the connecting rod 13; a cutting head 18 is installed on the end of the drill rod 4 away from the rotating body 9, and the cutting head 18 is an existing component and is used to cut rock and soil when drilling; The drill bit 3 is detachably mounted on the drill rod 4; the wire rope of the lifting winch 101 is connected to the drill bit 3. When the wire rope of the lifting winch 101 is wound, the drill bit 3 is pulled upward along the axial direction of the drill rod 4. When the wire rope of the lifting winch 101 is unwound, the drill bit 3 falls along the axial direction of the drill rod 4 under the action of gravity.

[0028] In this embodiment, the power box 10 includes a box body 105, a rotating shaft 107 and at least one driving unit 106; the number of driving units 106 is set according to the requirements of the working environment to optimize the efficiency of the drive system; the box body 105 is fixed on the bracket 11; the driving unit 106 is fixed on the box body 105; the rotating shaft 107 is rotatably mounted on the box body 105 and is connected to the driving unit 106 by transmission; the driving unit 106 and the rotating shaft 107 are connected by gear transmission, and the driving unit 106 drives the rotating shaft 107 to rotate after being started; the driving unit 106 is any one of a driving motor or an electric motor.

[0029] In this embodiment, the rotating body 9 includes a rotating disk 104, a tie rod 103 and a universal coupling 102; the rotating disk 104 is fixedly connected to the lower end of the rotating shaft 107; the tie rod 103 is fixed to the lower end of the rotating disk 104; the axes of the tie rod 103, the rotating disk 104 and the rotating shaft 107 are collinear; the upper end of the universal coupling 102 is connected to the lower end of the tie rod 103; the upper end of the connecting rod 13 is connected to the lower end of the universal coupling 102; the setting of the universal coupling 102 allows the drill rod 4 to freely adjust the angle in the drilling operation at different angles. The universal coupling 102 uses a positionable universal coupling.

[0030] In this embodiment, the cross-sectional shape of the drill rod 4 is circular or polygonal; the drill rod 4 is configured in multiples; including a rod body and a first joint 42; the first joint 42 is fixedly arranged at one end of the rod body; the cross-sectional shape of the first joint 42 is a regular polygon; the other end of the rod body is provided with a slot 44 adapted to the first joint 42; the first joint 42 is provided with a first plug hole; the rod body is provided with a second plug hole adapted to the first plug hole; the first joint 42 of the drill rod 4 is plugged into the slot 44 of another adjacent drill rod 4, and the two adjacent drill rods 4 are connected and fixed by inserting a pin into the first plug hole and the second plug hole. The cutting head 18 is installed at the end position of the drill rod 4 farthest from the rotating body 9.

[0031] According to the drilling depth requirement, the drill rod 4 is installed during the operation to increase the drilling depth. After the operation is completed, the drill rod 4 is pulled up and removed step by step. The specific operation is as follows: Installing the drill rod 4: inserting the first joint 42 of the newly taken drill rod 4 into the slot 44 of the drill rod 4 in the drill hole, and inserting the latch to complete the connection of the two drill rods 4; Disassembling the drill rod 4: pull the drill rod 4 in the borehole upward until the top of the next drill rod 4 is exposed from the borehole, remove the latch, and complete the disassembly of the upper drill rod 4.

[0032] In this embodiment, a second joint 131 adapted to the slot 44 is fixedly provided on the connecting rod 13; a third socket is provided on the second joint 131; the second joint 131 of the connecting rod 13 is inserted into the slot 44 of the adjacent drill rod 4, and the drill rod 4 and the connecting rod 13 are connected and fixed by inserting a pin into the third socket and the first socket.

[0033] Specific operations for installing and removing drill rod 4 during operation: A section of drill rod 4 is installed on the connecting rod 13, and the drill bit 3 is installed on the drill rod 4. As the drill rod 4 rotates, drilling is performed. When the second joint 131 of the connecting rod 13 is located at the top position of the drill hole, the pin is taken out, and the main winch 2 pulls up the bracket 11 to separate the connecting rod 13 from the drill rod 4. A new section of drill rod 4 is taken out and installed on the connecting rod 13. The bracket 11 continues to move upward to make the new drill rod 4 in a vertical state. The bracket 11 moves downward to insert the first joint 42 of the drill rod 4 at the upper end into the slot 44 of the drill rod 4 at the lower end, and the pin is inserted to complete the connection of the two drill rods 4.

[0034] When disassembling the drill rod 4, the bracket 11 pulls the drill rod 4 up to the first joint 42 of the top drill rod 4 to expose the drill hole, takes out the pin there, separates the two drill rods 4 there, pushes the upper drill rod 4 to tilt and the bracket 11 slowly moves downward, lays the drill rod 4 flat, removes the pins at the drill rod 4 and the connecting rod 13, removes the removed drill rod 4, and then the bracket 11 continues to move downward to the second joint 131 and inserts it into the slot 44 of the drill rod 4 in the drill hole, inserts the pin to connect the connecting rod 13 and the drill rod 4, repeats the above steps to complete the step-by-step disassembly of the drill rod 4.

[0035] In this embodiment, a perfusion channel is provided inside the drill rod 4 , and the perfusion channel is provided through the drill rod 4 along the axial direction of the drill rod 4 ; according to the operation requirements, mud or compressed air can be injected into the borehole through the perfusion channel.

[0036] In this embodiment, a guide groove 43 is provided on the outer wall of the drill rod 4, and the guide groove 43 extends in a direction parallel to the axis of the drill rod 4; a positioning groove 41 is provided on the outer wall of one end of the drill rod 4 near the first joint 42, and the positioning groove 41 is located on one side of the guide groove 43 and communicated with the guide groove 43; a positioning block 35 adapted to the guide groove 43 and the positioning groove 41 is provided on the drill bit 3, and the positioning block 35 can be slidably placed in the guide groove 43; the positioning block 35 slides along the guide groove 43 to the positioning groove 41, the drill rod 4 rotates, and the positioning block 35 is engaged in the positioning groove 41 to fix the drill bit 3 on the drill rod 4; the drill rod 4 rotates in the opposite direction, and the positioning block 35 slides from the positioning groove 41 to the guide groove 43. When the positioning block 35 is engaged in the positioning groove 41, the first joint 42 at the lower end of the drill rod 4 is located inside the drill bit 3, ensuring that the drill bit 3 first contacts the area to be drilled.

[0037] In this embodiment, the drill bit 3 includes a cylinder 31, a guide sleeve 34, a cover plate 32, a baffle 311 and a locking unit; the guide sleeve 34 passes through the cylinder 31 and is fixedly connected to the cylinder 31, and both ends of the guide sleeve 34 extend to the outside of the cylinder 31; the axis of the guide sleeve 34 and the axis of the cylinder 31 are collinear; the positioning block 35 is fixed to the inner wall of the guide sleeve 34; the drill rod 4 is arranged through the guide sleeve 34; the wire rope of the lifting winch 101 is connected to the upper end of the cylinder 31; the bottom of the cylinder 31 is provided with an opening, and the cover plate 32 is hinged at the bottom of the cylinder 31 and buckled on the opening; the middle part of the cover plate 32 is provided with a through hole for accommodating the guide sleeve 34 to pass through, and the lower end of the guide sleeve 34 passes through the through hole and extends to the bottom of the cover plate 32; the locking unit includes a control rod 36 and a hook head 38; the control rod 36 is slidably arranged on the cylinder 31; the middle part of the hook head 38 is hingedly mounted on The cam 33 is secured in place with the cam 33 and is easily accessible when the cam 33 is in a position to engage the cam 33a and 33b. When excavating, the excavating teeth 33 are used for crushing and excavating. At this time, the baffle 311 will slide in the annular groove until one end abuts against the limit block 312. At this time, the slag inlet hole 37 on the cover plate 32 is opened, and the excavated slag enters the interior of the cylinder 31 from the slag inlet hole 37 and is collected. When the cylinder 31 rotates in the opposite direction, the baffle 311 is reset, and the baffle 311 blocks the slag inlet hole 37, thereby limiting the slag in the cylinder 31.

[0038] In this embodiment, a flow guide tube 39 is fixedly arranged inside the cylinder 31, and the axis of the flow guide tube 39 is parallel to the axis of the cylinder 31; a first flow guide port connected to the flow guide tube 39 is arranged at the upper end of the cylinder 31; and a second flow guide port corresponding to the flow guide tube 39 is arranged on the cover plate 32. The flow guide tube 39 is used as a water permeable hole, so that the mud above the drill bit 3 flows to the bottom of the drill bit 3 through the water permeable hole, so as to reduce the vacuum phenomenon, which is conducive to reducing the lifting force and reducing the hole collapse phenomenon.

[0039] In this embodiment, a rod changing device is also included; the rod changing device includes a push rod unit, a rod changing platform 5 and a rod feeding unit; the push rod unit includes a push rod base 17 and a push rod cylinder 16; the push rod base 17 is fixed on the bracket 11; the push rod cylinder 16 is fixed on the push rod base 17; the piston rod of the push rod cylinder 16 is arranged toward the connecting rod 13; an operation hole 12 adapted to the drill rod 4 is arranged on the rod changing platform 5; a clamping unit is arranged on one side of the operation hole 12; the clamping unit includes a vertical shaft 14, a support rod 15 and two clamping cylinders; the vertical shaft 14 is rotatably mounted on the rod changing platform 5; the support rod 15 is vertically fixed to one side of the upper end of the vertical shaft 14; the two The two clamping cylinders are symmetrically fixed on the support rod 15; the piston rods of the two clamping cylinders are arranged close to each other; a clamping block is fixedly arranged on the piston rod of the clamping cylinder; the rod sending unit includes a base 6, a guide seat 7, an angle adjustment cylinder 8 and a rod sending cylinder; the base 6 is fixed on the rod changing platform 5; the guide seat 7 is hingedly connected to the end of the base 6 away from the rod changing platform 5; one end of the angle adjustment cylinder 8 is hinged on the base 6, and the other end is hinged on the guide seat 7; a push rod groove is arranged on the guide seat 7; the push rod groove extends toward the axial direction of the working hole 12; the rod sending cylinder is fixed in the push rod groove, and the piston rod of the rod sending cylinder is arranged toward the axial direction of the working hole 12. When installing the drill rod 4, the drill rod 4 at the drill hole is clamped by the clamping blocks of the two clamping cylinders, the drill rod 4 to be installed is placed in the push rod slot, and the slot 44 end is placed at the end facing the drill hole. The bracket 11 drives the connecting rod 13 to move to a predetermined height, and the piston rod of the push rod cylinder 16 extends to push the second joint 131 of the connecting rod 13 toward the drill rod 4 to be installed. The rod feeding cylinder pushes the drill rod 4 to be installed in the direction of the second joint 131 of the connecting rod 13, and the second joint 131 is inserted into the slot 44 of the drill rod 4 to be installed and fixed by a pin. The bracket 11 moves upward so that the drill rod 4 to be installed is lifted up in a vertical state, and then the bracket 11 moves downward to connect the two drill rods 4 to complete the drill rod 4 installation process.

[0040] Directions: Installation and commissioning The rotary drilling rig type centering drill is installed on the mast 1 of the rotary drilling rig, and the main winch 2 of the mast 1 is ensured to be connected with the main power system of the drilling rig.

[0041] Drilling Operation The driving unit 106 of the power box 10 is turned on to drive the rotating shaft 107, the rotating body 9, the connecting rod 13 and the drill rod 4 to rotate.

[0042] The main hoist 2 pulls the bracket 11 downwards through the wire rope to perform the drilling operation.

[0043] Adding and removing drill rods 4 According to the drilling depth requirements, use the rod changing device to complete the installation and removal of the drill rod 4: The push rod cylinder 16 pushes the connecting rod 13 to tilt, so as to facilitate docking with the new drill rod 4; the clamping unit ensures that the drill rod 4 in the borehole is fixed.

[0044] The rod-feeding cylinder pushes out the new drill rod 4 , and the latch fixes the new drill rod 4 and the connecting rod 13 , thereby completing the smooth replacement of the drill rod 4 .

[0045] Debris cleaning The slag inlet hole 37 of the drill bit 3 guides the slag generated during the drilling process into the cylinder 31 for storage.

[0046] The locking unit is opened to clean the debris inside the cylinder 31 .

[0047] Operation Notes Check the stability of all connection points and locking mechanisms to ensure safe operation of the equipment during drilling.

[0048] According to the working environment and the drilling depth, the motor parameters in the power box 10 are adjusted to optimize the drilling efficiency.

Claims

1. A rotary drilling rig type centering drilling rig, mounted on a mast (1), on which a main winch (2) is arranged, characterized in that: include: A bracket (11) is slidably mounted on the mast (1) and connected to a steel wire rope of a main winch (2); A power box (10) is fixed on the bracket (11) and is used to provide a rotational driving force; The rotating body (9) is rotatably mounted on the power box (10) and driven to rotate by the power box (10); a lifting winch (101) is mounted on the rotating body (9); A connecting rod (13) mounted on the lower end of the rotating body (9); A drill rod (4) detachably connected to the lower end of the connecting rod (13); The drill bit (3) is detachably sleeved and mounted on the drill rod (4); and the steel wire rope of the lifting winch (101) is connected to the drill bit (3).

2. A rotary drilling rig type centering drill according to claim 1, characterized in that: The power box (10) comprises a box body (105), a rotating shaft (107) and at least one driving unit (106); the box body (105) is fixed on the bracket (11); the driving unit (106) is fixed on the box body (105); the rotating shaft (107) is rotatably mounted on the box body (105) and is in driving connection with the driving unit (106); the driving unit (106) is any one of a driving motor and an electric motor.

3. A rotary drilling rig type centering drill according to claim 2, characterized in that: The rotating body (9) includes a turntable (104), a pull rod (103) and a universal joint (102); the turntable (104) is fixedly connected to the lower end of the rotating shaft (107); the pull rod (103) is fixed to the lower end of the turntable (104); the axes of the pull rod (103), the turntable (104) and the rotating shaft (107) are collinear; the upper end of the universal joint (102) is connected to the lower end of the pull rod (103); and the upper end of the connecting rod (13) is connected to the lower end of the universal joint (102).

4. A rotary drilling rig type centering drill according to claim 1, characterized in that: The drill rod (4) is configured with a plurality of parts, including a rod body and a first joint (42); the first joint (42) is fixedly arranged at one end of the rod body; the cross-sectional shape of the first joint (42) is a regular polygon; the other end of the rod body is provided with a slot (44) adapted to the first joint (42); the first joint (42) is provided with a first plug hole; the rod body is provided with a second plug hole adapted to the first plug hole; the first joint (42) of the drill rod (4) is plugged into the slot (44) of another adjacent drill rod (4), and the two adjacent drill rods (4) are connected and fixed by inserting a pin into the first plug hole and the second plug hole.

5. A rotary drilling rig type centering drill according to claim 4, characterized in that: The connecting rod (13) is fixedly provided with a second joint (131) adapted to the slot (44); the second joint (131) is provided with a third plug hole; the second joint (131) of the connecting rod (13) is plugged into the slot (44) of the adjacent drill rod (4), and the drill rod (4) and the connecting rod (13) are connected and fixed by inserting a pin into the third plug hole and the first plug hole.

6. The rotary drilling rig type centering drill according to claim 1, characterized in that: The drill rod (4) is provided with a perfusion channel inside, and the perfusion channel is provided through the drill rod (4) along the axial direction of the drill rod (4).

7. A rotary drilling rig type centering drill according to claim 4, characterized in that: The outer wall of the drill rod (4) is provided with a guide groove (43), and the guide groove (43) extends in a direction parallel to the axis of the drill rod (4); the outer wall of the drill rod (4) at one end close to the first joint (42) is provided with a positioning groove (41), and the positioning groove (41) is located on one side of the guide groove (43) and is connected with the guide groove (43); the drill bit (3) is provided with a positioning block (35) adapted to the guide groove (43) and the positioning groove (41), and the positioning block (35) is slidably placed in the guide groove (43); the positioning block (35) slides along the guide groove (43) to the positioning groove (41), the drill rod (4) rotates, and the positioning block (35) is clamped in the positioning groove (41) to fix the drill bit (3) on the drill rod (4); the drill rod (4) rotates in the opposite direction, and the positioning block (35) slides from the positioning groove (41) to the guide groove (43).

8. A rotary drilling rig type centering drill according to claim 7, characterized in that: The drill bit (3) comprises a cylinder (31), a guide sleeve (34), a cover plate (32), a baffle (311) and a locking unit; the guide sleeve (34) passes through the cylinder (31) and is fixedly connected to the cylinder (31); the axis of the guide sleeve (34) and the axis of the cylinder (31) are collinear; the positioning block (35) is fixed on the inner wall of the guide sleeve (34); the steel wire rope of the lifting winch (101) is connected to the upper end of the cylinder (31); The bottom of the cylinder (31) is provided with an opening, and the cover plate (32) is hinged on the bottom of the cylinder (31) and buckled on the opening; the middle of the cover plate (32) is provided with a through hole for accommodating the guide sleeve (34) to pass through, and the lower end of the guide sleeve (34) passes through the through hole and extends to the bottom of the cover plate (32); the locking unit comprises a control rod (36) and a hook head (38); the control rod (36) is slidably arranged on the cylinder (31); the hook head (38) is The middle part is hingedly installed in the cylinder (31), one end is hingedly connected to the operating rod (36), and the other end is integrally provided with a locking block; a lock buckle (310) is fixedly provided on the cover plate (32); when the cover plate (32) is buckled on the opening of the cylinder (31), the operating rod (36) is pulled toward the outside of the cylinder (31), driving the hook head (38) to rotate, and the locking block is inserted and fixed in the lock buckle (310); a slag inlet hole (310) is provided on the cover plate (32). 7); an annular groove is provided on the outer side surface of the bottom of the guide sleeve (34), and the annular groove is located below the cover plate (32); the baffle plate (311) is located below the cover plate (32), covers the slag inlet hole (37), and one end is slidably inserted in the annular groove; a digging tooth (33) is fixedly provided on the lower end surface of the baffle plate (311); a limit block (312) adapted to the baffle plate (311) is fixedly provided on the lower end surface of the cover plate (32).

9. A rotary drilling rig type centering drill according to claim 8, characterized in that: A flow guide pipe (39) is fixedly arranged inside the cylinder (31), and the axis of the flow guide pipe (39) is parallel to the axis of the cylinder (31); a first flow guide port connected to the flow guide pipe (39) is arranged at the upper end of the cylinder (31); and a second flow guide port corresponding to the flow guide pipe (39) is arranged on the cover plate (32).

10. The rotary drilling rig type centering drill according to claim 1, characterized in that: It also includes a rod changing device; the rod changing device includes a push rod unit, a rod changing platform (5) and a rod feeding unit; the push rod unit includes a push rod base (17) and a push rod cylinder (16); the push rod base (17) is fixed on the bracket (11); the push rod cylinder (16) is fixed on the push rod base (17); the piston rod of the push rod cylinder (16) is arranged toward the connecting rod (13); an operation hole (12) adapted to the drill rod (4) is arranged on the rod changing platform (5); a clamping unit is arranged on one side of the operation hole (12); the clamping unit includes a vertical shaft (14), a support rod (15) and two clamping cylinders; the vertical shaft (14) is rotatably mounted on the rod changing platform (5); the support rod (15) is vertically fixed on one side of the upper end of the vertical shaft (14); two clamping cylinders are arranged on the rod changing platform (5); The tightening cylinders are symmetrically fixed on the support rod (15); the piston rods of the two clamping cylinders are arranged close to each other; a clamping block is fixedly arranged on the piston rod of the clamping cylinder; the rod feeding unit comprises a base (6), a guide seat (7), an angle adjustment cylinder (8) and a push rod cylinder (16); the base (6) is fixed on the rod changing platform (5); the guide seat (7) is hingedly connected to one end of the base (6) away from the rod changing platform (5); one end of the angle adjustment cylinder (8) is hingedly connected to the base (6), and the other end is hingedly connected to the guide seat (7); a push rod groove is arranged on the guide seat (7); the push rod groove extends toward the axial direction of the working hole (12); the push rod cylinder (16) is fixed in the push rod groove, and the piston rod of the push rod cylinder (16) is arranged toward the axial direction of the working hole (12).

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