Closed-pit goaf underground old kiln water drilling survey equipment

Abstract

The invention provides a closed-pit goaf underground old kiln water drilling survey device, which belongs to the technical field of drilling and comprises a drilling unit, a recovery unit and a drill loading unit. The drilling unit comprises a drill rod, a jacking structure in transmission connection with the drill rod and a drilling structure arranged on the drill rod, the drill rod is provided with a containing cavity, the jacking structure is used for pushing the drill rod to advance, the drilling structure comprises a plurality of drill bits and a rotating assembly, the drill bits have working positions and storage positions, and the drill bits located at the working positions are in transmission connection with the rotating assembly; the rotating assembly is used for driving the drill to rotate. The recycling unit comprises a position changing seat slidably arranged in the containing cavity and a position changing structure in transmission connection with the position changing seat, the position changing seat has a working state fixed to the drill bit and a shutdown state separated from the drill bit, the position changing seat moves in the axial direction of the containing cavity, and the position changing structure is used for driving the position changing seat to move; the drill installing unit is arranged in the containing cavity and used for pushing the drill bit to the working position. The possibility of accidents is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of drilling, specifically relating to a water drilling survey device for underground old mines in closed mining areas. Background Technology

[0002] my country has a long history of mining development. Over long geological periods, these mined-out areas have accumulated large amounts of water due to continuous replenishment from atmospheric precipitation, surface water, and underground aquifers, forming what is known as "underground old mine water." The scale, spatial distribution, and water pressure of these old mine water bodies are unknown, resembling "time bombs" placed deep underground, posing a serious potential threat to the safe production of surrounding mines, surface infrastructure (such as railways, highways, and buildings), and the ecological environment. Therefore, accurately determining the occurrence status of old mine water in closed mining areas is the primary prerequisite for disaster management, resource recovery, or safe reuse of land.

[0003] From the initial drilling to the final exposure of the goaf, the drill bit will successively traverse overburden, soft rock layers, hard rock layers, and potentially fractured zones. No single type of drill bit can maintain efficient drilling speed and lifespan in all formations, especially when drilling into hard overlying rock layers in goaf areas, where wear on the drill bit is extreme. Drill bits with carbide or diamond teeth, better suited to hard rock formations, must be used. Failure to replace them in time will result in extremely low drilling efficiency, increased energy consumption, and even severe drill bit wear or "burnt-out" conditions, preventing further drilling and ensuring the borehole reaches the designed target depth.

[0004] Changing the drill bit involves three steps: tripping up, changing the bit, and running the drill bit down. Tripping up is particularly important because the annular space between the outer wall of the drill pipe and the borehole wall is very narrow. When the drill pipe is lifted up quickly, it acts like a giant piston moving upwards in the wellbore, creating a momentary negative pressure at the bottom of the hole. This negative pressure draws in fluids and cuttings from around the borehole wall. For the borehole wall, which has been temporarily balanced by mud pressure, this inward suction force may disrupt its mechanical balance, leading to borehole narrowing, collapse, or blowout accidents. Summary of the Invention

[0005] This invention provides a water drilling survey device for underground old mines in closed mining areas, which aims to solve the technical problem that the mechanical balance of the protective wall may be disrupted during drilling, thus causing accidents.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a water drilling and investigation device for underground old mine shafts in closed mining areas, comprising: A drilling unit includes a drill rod, a jacking structure driven to the drill rod, and a drilling structure located at the front end of the drill rod. The front end of the drill rod is recessed inward to form a receiving cavity. The jacking structure is used to push the drill rod forward. The drilling structure includes multiple drill bits and a rotating assembly. The drill bits have a working position and a reserve position. The drill bit located in the working position is driven to the rotating assembly. The rotating assembly is used to drive the corresponding drill bit to rotate. The recovery unit includes a shifting seat slidably disposed in the receiving cavity and a shifting structure drively connected to the shifting seat. The shifting seat has a working state fixed with the drill bit and a stopped state separated from the drill bit. The shifting seat moves axially along the receiving cavity, and the shifting structure is used to drive the shifting seat to move. A drilling unit is disposed within the receiving cavity, and the drilling unit is used to push the drill bit from the reserve position to the working position.

[0007] In one possible embodiment, the drill bit comprises: Central seat; Multiple cutter heads, each having a head end and a tail end, are connected in sequence and surround the outer periphery of the central seat. The cutter heads are connected head to head and tail to tail. Adjacent cutter heads are hinged to each other. The hinge joint at the head-to-head connection point of the cutter head has multiple connection points. The hinge axis of the cutter head is parallel to the moving direction of the shifting seat. The cutter head is also adsorbed and connected to the inner wall of the receiving cavity. The scaling component includes multiple traction rollers slidably connected to the central seat and traction sleeves screwed to the traction rollers in a corresponding manner. The central seat at the bottom is fixedly connected to the transposition seat. The traction rollers slide along the radial direction of the central seat. The traction rollers are adsorbed and connected to one of the connection points. The traction sleeves are also rotatably connected to the central seat. The traction sleeves rotate about the radial direction of the central seat. A power assembly is connected to the traction sleeve, and the power assembly is used to drive the traction sleeve to rotate.

[0008] In one possible embodiment, the drilling unit includes: A sleeve is fixed to the inner wall of the receiving cavity. The sleeve has a relief groove for the traction roller to extend out of the sleeve. The sleeve is also adsorbed and connected to the cutter head. The tool holder corresponds one-to-one with the drill bit. The tool holder includes a plurality of movable seats spaced apart around the outer periphery of the casing. The movable seats are magnetically connected to the drill bit. The movable seats in different tool holders are not aligned. The movable seats are also slidably connected to the casing. The movable seats move along the axial direction of the casing. A reversing seat is rotatably connected to the outer wall of the surrounding cylinder, and the reversing seat rotates about the axial direction of the surrounding cylinder. A driving element is connected to the reversing seat, and the driving element is used to drive the reversing seat to rotate. The telescopic component is fixedly connected to the reversing seat. The telescopic component extends and retracts along the axial direction of the surrounding cylinder, and the telescopic end of the telescopic component is adsorbed and connected to the tool holder.

[0009] In one possible embodiment, the rotating assembly includes a rotating member fixed to the inner wall of the receiving cavity and a rotating roller fixed to the output shaft of the rotating member. The rotating roller passes through the surrounding cylinder, and the shifting seat has a through hole for the rotating roller to pass through. A gap is left between the inner wall of the through hole and the rotating roller. The transposition structure includes: A flat plate is fixedly attached to the outer periphery of the rotating roller; A shifting roller is rotatably connected to the flat plate, the rotation axis of the shifting roller is parallel to the axial direction of the surrounding cylinder, and the shifting roller is screwed to the shifting seat; A shifting component is connected to the shifting roller, and the shifting component is used to drive the shifting roller to rotate. A guide roller is fixed to the flat plate, the guide roller passes through the shifting seat, and the guide roller is slidably adapted to the shifting seat.

[0010] In one possible embodiment, a torsion spring is provided at the hinge axis between two adjacent cutter heads, the torsion spring having a preload that causes the two adjacent cutter heads to move away from each other.

[0011] In one possible embodiment, the end of the pull roller away from the cutter head is provided with a compensation seat. The side of the compensation seat opposite to the pull roller is rotatably connected to a roller and a rolling element that is driven to the roller. The rotation axis of the roller is perpendicular to the moving direction of the pull roller. The roller is adsorbed to the rotating roller, and the rolling element is used to drive the roller to rotate.

[0012] In one possible configuration, the compensation seat is slidably connected to the traction roller, the compensation seat slides along the moving direction of the traction roller, and an elastic element is fixed between the compensation seat and the traction roller, the elastic element having a preload force that causes the compensation seat to move away from the traction roller.

[0013] In one possible embodiment, the power assembly includes: Multiple linked bevel gears are fixedly connected to the outer periphery of the traction sleeve in a one-to-one correspondence; The transmission bevel gear meshes synchronously with all the linkage bevel gears; A power component is connected to the transmission bevel gear, and the power component is used to drive the transmission bevel gear to rotate.

[0014] In one possible embodiment, the center seat has a guide hole through which the traction roller passes, a guide block is fixed to the inner wall of the guide hole, and a guide groove is provided on the outer wall of the traction roller to slide and adapt to the guide block, the guide groove extending along the axial direction of the traction roller.

[0015] The water drilling survey equipment for underground old mines in closed mining areas provided by this invention has the following advantages compared with the prior art: by working together with the recovery unit and the drilling unit, the drill bit can be recovered and replaced inside the drill rod, so that the entire drill bit replacement process is completed at the bottom of the hole. This eliminates the need to start drilling when replacing the drill bit, thereby minimizing the amount of movement of the drill rod. This avoids the "piston effect" and reduces the disturbance of the suction effect on the fragile hole wall, thus maintaining the mechanical balance of the wall and reducing the occurrence of accidents. Attached Figure Description

[0016] Figure 1 This is a partial schematic diagram of the underground old mine water drilling investigation equipment in the closed mining area according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A in the middle; Figure 3 This is a schematic diagram of the fully extended cutter head used in an embodiment of the present invention; Figure 4 This is a schematic diagram of the fully retracted cutter head used in an embodiment of the present invention; Figure 5 This is a partial schematic diagram illustrating the drilling unit in an embodiment of the present invention; Figure 6 This is a partial schematic diagram illustrating the recycling unit in an embodiment of the present invention; Figure 7 for Figure 6 A magnified view of part B in the middle section; Figure 8 This is a partial schematic diagram illustrating the roller and the compensation seat in an embodiment of the present invention; Figure 9 This is a partial cross-sectional view illustrating the elastic element in an embodiment of the present invention; Figure 10 This is a partial cross-sectional view illustrating the guide block and guide groove in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 10. Drilling unit; 101. Drill rod; 102. Center seat; 1021. Guide hole; 1022. Guide block; 103. Cutting head; 104. Traction roller; 1041. Guide groove; 105. Traction sleeve; 106. Rotating component; 107. Rotating roller; 108. Linkage bevel gear; 109. Transmission bevel gear; 110. Power component; 20. Recycling unit; 201. Transposition seat; 2011. Through hole; 202. Flat plate; 203. Transposition roller; 204. Guide roller; 30. Drilling unit; 301. Surrounding tube; 3011. Clearance groove; 302. Tool holder; 303. Reversing seat; 304. Telescopic component; 40. Compensation seat; 401. Roller; 402. Elastic component. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] Please refer to the following: Figures 1 to 10 This invention describes a drilling and investigation device for underground old mine shafts in closed mining areas. The device includes a drilling unit 10, a recovery unit 20, and a drill loading unit 30. The drilling unit 10 includes a drill rod 101, a jacking structure connected to the drill rod 101, and a drilling structure located at the front end of the drill rod 101. The front end of the drill rod 101 is recessed inward to form a receiving cavity. The jacking structure is used to push the drill rod 101 forward. The drilling structure includes multiple drill bits and a rotating assembly. The drill bits have a working position and a reserve position. The drill bit in the working position is connected to the rotating assembly. The rotating assembly is connected by a drive mechanism to drive the corresponding drill bit to rotate. The recovery unit 20 includes a shifting seat 201 slidably disposed in the receiving cavity and a shifting structure connected to the shifting seat 201 by a drive mechanism. The shifting seat 201 has a working state fixed with the drill bit and a stopped state separated from the drill bit. The shifting seat 201 moves axially along the receiving cavity, and the shifting structure is used to drive the shifting seat 201 to move. The drill loading unit 30 is disposed in the receiving cavity and is used to push the drill bit from the storage position to the working position.

[0020] It should be noted that the drill pipe 101 is composed of multiple pipes spliced ​​together. The jacking structure is a device that pushes the drill pipe 101 forward and splices the drill pipe 101 into an integrated unit. This is conventional technology and will not be described in detail in this application.

[0021] The inward direction of the drill pipe 101 is forward.

[0022] The water drilling survey equipment for underground old mines in closed mining areas provided in this embodiment uses a jacking structure to push the entire drill rod 101 forward, and a rotating component to drive the drill bit in the working position to rotate and perform rock cutting operations. When the drill bit is severely worn and needs to be replaced, the switching structure is activated to drive the switching seat 201 to move axially within the receiving cavity, pulling the worn drill bit back into the receiving cavity and separating it from the switching seat 201. Then, the switching seat 201 is reset to the working position. The drilling unit 30 pushes the drill bit to be replaced from the reserve position to the working position. After the drill bit reaches the working position, it is attracted to the switching seat 201, thereby completing the replacement of the drill bit.

[0023] Compared with existing technologies, the drill bit can be recovered and replaced inside the drill rod 101 by working in concert with the recovery unit 20 and the drilling unit 30. The entire drill bit replacement process is completed at the bottom of the hole, so that the drill bit replacement does not require drilling. This minimizes the movement of the drill rod 101, thereby avoiding the "piston effect" and reducing the disturbance of the suction effect on the fragile hole wall. This keeps the mechanical balance of the wall stable and reduces the occurrence of accidents.

[0024] In some embodiments, see Figures 1 to 4 The drill bit includes a center seat 102, multiple cutter heads 103, a scaling assembly, and a power assembly. Each cutter head 103 has a head end and a tail end. The cutter heads 103 are sequentially connected and surround the outer periphery of the center seat 102, with the head ends connected and the tail ends connected. Adjacent cutter heads 103 are hinged to each other. The hinge points at the head-to-head connection of the cutter heads 103 have multiple connection points. The hinge axis of the cutter head 103 is parallel to the moving direction of the shift seat 201. The cutter head 103 is also adsorbed and connected to the inner wall of the receiving cavity. The scaling assembly includes multiple... A traction roller 104 is slidably connected to the center seat 102, and a traction sleeve 105 is screwed to the traction roller 104 in a corresponding manner. The center seat 102 at the bottom is fixedly connected to the transposition seat 201. The traction roller 104 slides along the radial direction of the center seat 102. The traction roller 104 is adsorbed and connected to one of the connection points. The traction sleeve 105 is also rotatably connected to the center seat 102. The traction sleeve 105 rotates about the radial direction of the center seat 102. A power component is driven and connected to the traction sleeve 105. The power component is used to drive the traction sleeve 105 to rotate.

[0025] When the power unit is activated, it drives the traction sleeve 105 to rotate. Since the traction sleeve 105 and the traction roller 104 are screwed together, the rotation of the traction sleeve 105 will cause the traction roller 104 to move outward along the radial direction of the center seat 102, thereby pushing the cutter head 103 to expand outward, thus increasing the drill bit diameter. When the power unit works in the opposite direction, it drives the traction sleeve 105 to rotate in the opposite direction, and the traction roller 104 retracts inward. At this time, the traction roller 104 pulls the cutter head 103 to move radially inward, thereby realizing the drill bit retraction.

[0026] The drill bit 103 is a continuous type with its ends connected. When the drill bit expands or contracts, both ends of any drill bit 103 are supported by another drill bit 103. In contrast, although the diameter of the intermittent drill bit 103 can also be changed, there is a gap between two adjacent drill bits 103 after the drill bit expands, resulting in no support points at both ends of the drill bit 103. Therefore, the drilling stability of the continuous drill bit 103 is higher than that of the intermittent drill bit 103.

[0027] When changing the drill bit, first retract the cutter head 103 to reduce the outer diameter of the drill bit, so that the drill bit can be pulled back into the receiving cavity to avoid interference or jamming.

[0028] After the shifting seat 201 is retracted into the receiving cavity, the free connection point on the cutter head 103 is aligned with and abuts against the upper traction roller 104. Then the lower traction roller 104 separates from the cutter head 103, thus completing the handover of the worn cutter head 103. After the handover of the worn cutter head 103 is completed, the shifting seat 201 returns to the working position and is attracted and connected to the cutter head 103 to be replaced.

[0029] In some embodiments, see Figure 5 The drilling unit 30 includes a coaxial sleeve 301, a cutter holder 302, a reversing seat 303, a driving component, and a telescopic component 304. The coaxial sleeve 301 is fixed to the inner wall of the receiving cavity. The coaxial sleeve 301 has a relief groove 3011 for the pull roller 104 to extend out of the coaxial sleeve 301. The coaxial sleeve 301 is also magnetically connected to the cutter head 103. The cutter holder 302 corresponds to each drill bit. The cutter holder 302 includes multiple movable seats spaced around the outer periphery of the coaxial sleeve 301. The movable seats are magnetically connected to the cutter head 103. The movable seats in different cutter holders 302 are not aligned. The movable seats are also magnetically connected to the coaxial sleeve 301. The sliding connection allows the movable seat to move along the axial direction of the surrounding cylinder 301; the reversing seat 303 is rotatably connected to the outer wall of the surrounding cylinder 301, and the reversing seat 303 rotates about the axial direction of the surrounding cylinder 301; the driving component is connected to the reversing seat 303 and is used to drive the reversing seat 303 to rotate, and the driving component is an annular guide rail; the telescopic component 304 is fixed to the reversing seat 303 and extends and retracts along the axial direction of the surrounding cylinder 301. The telescopic component 304 is a telescopic oil cylinder or hydraulic cylinder, and the telescopic end of the telescopic component 304 is adsorbed and connected to the tool holder 302, for example, by vacuum adsorption or magnetic adsorption.

[0030] After the worn cutter head 103 is pulled into the receiving cavity, the drive unit starts and drives the reversing seat 303 to start, so that the telescopic member 304 corresponds to the cutter holder 302 located at the bottom. The telescopic member 304 starts to extend until it abuts against the corresponding cutter holder 302. Then the telescopic member 304 and the corresponding cutter holder 302 are attracted and connected. The telescopic member 304 continues to extend until the cutter head 103 to be replaced is pushed to the working position.

[0031] The drive unit starts and drives the reversing seat 303 to rotate, thereby changing the extension position of the telescopic member 304, so that the telescopic member 304 can be attracted and connected to different cutter heads 103, and thus the storage position can store multiple cutter heads 103.

[0032] In some embodiments, see Figure 6 The rotating assembly includes a rotating component 106 fixed to the inner wall of the receiving cavity and a rotating roller 107 fixed to the output shaft of the rotating component 106. The rotating component 106 is a servo motor. The rotating roller 107 passes through the surrounding cylinder 301. The shifting seat 201 has a through hole 2011 for the rotating roller 107 to pass through. A gap is left between the inner wall of the through hole 2011 and the rotating roller 107.

[0033] The transposition structure includes a flat plate 202, a transposition roller 203, a transposition component, and a guide roller 204. The flat plate 202 is fixed to the outer periphery of the rotating roller 107. The transposition roller 203 is rotatably connected to the flat plate 202, and the rotation axis of the transposition roller 203 is parallel to the axial direction of the surrounding cylinder 301. The transposition roller 203 is screwed to the transposition seat 201. The transposition component is driven to the transposition roller 203 and is used to drive the transposition roller 203 to rotate. The transposition component is a servo motor. The guide roller 204 is fixed to the flat plate 202 and passes through the transposition seat 201. The guide roller 204 and the transposition seat 201 are slidably adapted to each other.

[0034] The rotating component 106 starts and drives the rotating roller 107 to rotate, the rotating roller 107 drives the flat plate 202 to rotate, and the flat plate 202 drives the drill bit to rotate, thereby cutting the rock strata; the shifting component starts and drives the shifting roller 203 to rotate, and during the rotation of the shifting roller 203, the shifting seat 201 is restricted to rotate by the guide roller 204, so that the shifting seat 201 moves along the shifting roller 203, thereby pulling the worn cutter head 103 back into the receiving cavity through the shifting seat 201; after the worn cutter head 103 has completed the handover, the shifting component starts in the opposite direction and drives the shifting seat 201 back to the working position.

[0035] After the shift seat 201 returns to its original position, the power unit starts, causing the pull roller 104 to come into contact with and be attracted to the cutter head 103 in the working position. Then the power unit starts again to fully unfold the cutter head.

[0036] Through the coordinated action of the rotating roller 107 and the shifting roller 203, two different movements of the shifting seat 201 are achieved. When the rotating roller 107 is started, the shifting seat 201 rotates in place, thereby driving the cutter head to cut; when the shifting roller 203 is started, the shifting seat 201 drives the cutter head 103 to retract into the receiving cavity.

[0037] In some embodiments, a torsion spring is provided at the hinge shaft between two adjacent cutter heads 103, and the torsion spring has a preload force that causes the two adjacent cutter heads 103 to move away from each other.

[0038] When the traction roller 104 moves outward radially along the center seat 102, the torsion spring releases its elastic force synchronously, thereby assisting the cutter head 103 to expand outward.

[0039] In some embodiments, see Figure 3 and Figure 8 The end of the pull roller 104 away from the cutter head 103 is provided with a compensation seat 40. The side of the compensation seat 40 away from the pull roller 104 is rotatably connected to a roller 401 and a rolling element connected to the roller 401 for transmission. The rotation axis of the roller 401 is perpendicular to the moving direction of the pull roller 104. The roller 401 is adsorbed to the rotating roller 107, for example, by vacuum adsorption or magnetic adsorption. The rolling element is used to drive the roller 401 to rotate. The rolling element is a servo motor.

[0040] During the process of the center seat 102 at the bottom being retracted into the receiving cavity from the working position, the area enclosed by the cutter head 103 is the smallest. At this time, the roller 401 abuts against the rotating roller 107, avoiding sliding friction between the pull roller 104 and the rotating roller 107, thereby reducing wear on the rotating roller 107. At the same time, the simultaneous abutment of multiple rollers 401 against the rotating roller 107 also ensures that the moving direction of the center seat 102 is parallel to the axial direction of the rotating roller 107.

[0041] After the worn drill bit is fully retracted into the receiving cavity, the roller 401 adheres to the rotating roller 107, enhancing the stability of the center seat 102.

[0042] The roller 401, which is always located on the center seat 102 in the receiving cavity, remains in contact with the rotating roller 107. The attraction between the roller 401 and the rotating roller 107 can keep the corresponding scaling component and the rotating roller 107 relatively stationary. After the scaling component receives the worn cutter head 103, the corresponding rolling element starts to drive the scaling component to move upward until the free connection point on the cutter head 103 is aligned with the upper traction roller 104. This transports the worn cutter head 103 to the innermost side of the receiving cavity. Then the lower scaling component returns to its position to wait for the arrival of the next worn cutter head 103.

[0043] In some embodiments, see Figure 9 The compensation seat 40 is slidably connected to the pull roller 104. The compensation seat 40 slides along the moving direction of the pull roller 104. An elastic element 402 is fixed between the compensation seat 40 and the pull roller 104. The elastic element 402 has a preload force that causes the compensation seat 40 to move away from the pull roller 104. The elastic element 402 is a spring or a spring rod.

[0044] It should be noted that if the hinge joint of the two cutter heads 103 is connected to the traction roller 104, then the opening and closing area at that point is located on the outer side of the cutter ring; if the hinge joint of the two cutter heads 103 is not connected to the traction roller 104, then the opening and closing area at that point is located on the inner side of the cutter ring. The cutter heads 103 can be connected by hinges. By controlling the installation direction of the hinges and the different opening and closing angles of the hinges, the opening and closing area can be determined to be on the inner or outer side of the cutter ring, thus preventing the cutter ring from folding back when it contracts or expands.

[0045] By incorporating the elastic element 402, the roller 401 can always contact the rotating roller 107 regardless of the position of the traction roller 104. Without the elastic element 402, the roller 401 in the working position would separate from the rotating roller 107. With the addition of the elastic element 402, the roller 401 remains in contact with and adheres to the rotating roller 107, thereby enhancing the rotational stability of the cutter head 103 in the working position. Simultaneously, the addition of the elastic element 402 strengthens the contact between the roller 401 and the rotating roller 107 within the receiving cavity, thus improving the roller 401's grip and, consequently, its crawling force.

[0046] In some embodiments, see Figure 6 and Figure 7 The power assembly includes multiple linkage bevel gears 108, transmission bevel gears 109, and a power component 110; the multiple linkage bevel gears 108 are fixedly connected to the outer periphery of the traction sleeve 105 in a one-to-one correspondence; the transmission bevel gears 109 mesh synchronously with all the linkage bevel gears 108; the power component 110 is connected to the transmission bevel gears 109 for transmission, and the power component 110 is used to drive the transmission bevel gears 109 to rotate. The power component 110 is a servo motor.

[0047] It should be noted that the power component 110 can be connected to the transmission bevel gear 109 via a gear set.

[0048] When the power unit 110 starts, it drives the transmission bevel gear 109 to rotate through the gear set. The rotation of the transmission bevel gear 109 drives the linkage bevel gear 108 to rotate. The rotation of the linkage bevel gear 108 drives all the traction sleeves 105 to rotate synchronously, thereby ensuring that the movement of all the traction rollers 104 is consistent.

[0049] In some embodiments, see Figure 2 and Figure 10 The center seat 102 has a guide hole 1021 for the pull roller 104 to pass through. A guide block 1022 is fixed to the inner wall of the guide hole 1021. The outer wall of the pull roller 104 has a guide groove 1041 that is slidably adapted to the guide block 1022. The guide groove 1041 extends along the axial direction of the pull roller 104.

[0050] During the rotation of the traction sleeve 105, the traction roller 104 moves radially, causing the guide block 1022 to slide within the guide groove 1041. Thus, the guide block 1022 restricts the traction roller 104 to move only radially.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water drilling survey device for underground old mine shafts in closed mining areas, characterized in that, include: A drilling unit includes a drill rod, a jacking structure driven to the drill rod, and a drilling structure located at the front end of the drill rod. The front end of the drill rod is recessed inward to form a receiving cavity. The jacking structure is used to push the drill rod forward. The drilling structure includes multiple drill bits and a rotating assembly. The drill bits have a working position and a reserve position. The drill bit located in the working position is driven to the rotating assembly. The rotating assembly is used to drive the corresponding drill bit to rotate. The recovery unit includes a shifting seat slidably disposed in the receiving cavity and a shifting structure drively connected to the shifting seat. The shifting seat has a working state fixed with the drill bit and a stopped state separated from the drill bit. The shifting seat moves axially along the receiving cavity, and the shifting structure is used to drive the shifting seat to move. A drilling unit is disposed within the receiving cavity, and the drilling unit is used to push the drill bit from the reserve position to the working position.

2. The water drilling and investigation equipment for underground old mines in closed mining areas as described in claim 1, characterized in that, The drill bit includes: Central seat; Multiple cutter heads, each having a head end and a tail end, are connected in sequence and surround the outer periphery of the central seat. The cutter heads are connected head to head and tail to tail. Adjacent cutter heads are hinged to each other. The hinge joint at the head-to-head connection point of the cutter head has multiple connection points. The hinge axis of the cutter head is parallel to the moving direction of the shifting seat. The cutter head is also adsorbed and connected to the inner wall of the receiving cavity. The scaling component includes multiple traction rollers slidably connected to the central seat and traction sleeves screwed to the traction rollers in a corresponding manner. The central seat at the bottom is fixedly connected to the transposition seat. The traction rollers slide along the radial direction of the central seat. The traction rollers are adsorbed and connected to one of the connection points. The traction sleeves are also rotatably connected to the central seat. The traction sleeves rotate about the radial direction of the central seat. A power assembly is connected to the traction sleeve, and the power assembly is used to drive the traction sleeve to rotate.

3. The water drilling and investigation equipment for underground old mines in closed mining areas as described in claim 2, characterized in that, The drilling unit includes: A sleeve is fixed to the inner wall of the receiving cavity. The sleeve has a relief groove for the traction roller to extend out of the sleeve. The sleeve is also adsorbed and connected to the cutter head. The tool holder corresponds one-to-one with the drill bit. The tool holder includes a plurality of movable seats spaced apart around the outer periphery of the casing. The movable seats are magnetically connected to the drill bit. The movable seats in different tool holders are not aligned. The movable seats are also slidably connected to the casing. The movable seats move along the axial direction of the casing. A reversing seat is rotatably connected to the outer wall of the surrounding cylinder, and the reversing seat rotates about the axial direction of the surrounding cylinder. A driving element is connected to the reversing seat, and the driving element is used to drive the reversing seat to rotate. The telescopic component is fixedly connected to the reversing seat. The telescopic component extends and retracts along the axial direction of the surrounding cylinder, and the telescopic end of the telescopic component is adsorbed and connected to the tool holder.

4. The water drilling and investigation equipment for underground old mines in closed mining areas as described in claim 3, characterized in that, The rotating assembly includes a rotating member fixed to the inner wall of the receiving cavity and a rotating roller fixed to the output shaft of the rotating member. The rotating roller passes through the surrounding cylinder, and the shifting seat has a through hole for the rotating roller to pass through. A gap is left between the inner wall of the through hole and the rotating roller. The transposition structure includes: A flat plate is fixed to the outer periphery of the rotating roller; A shifting roller is rotatably connected to the flat plate, the rotation axis of the shifting roller is parallel to the axial direction of the surrounding cylinder, and the shifting roller is screwed to the shifting seat; A shifting component is connected to the shifting roller, and the shifting component is used to drive the shifting roller to rotate. A guide roller is fixed to the flat plate, the guide roller passes through the shifting seat, and the guide roller is slidably adapted to the shifting seat.

5. The water drilling and investigation equipment for underground old mines in closed mining areas as described in claim 3, characterized in that, A torsion spring is provided at the hinge axis between two adjacent cutter heads, and the torsion spring has a preload force that causes the two adjacent cutter heads to move away from each other.

6. The water drilling and investigation equipment for underground old mines in closed mining areas as described in claim 4, characterized in that, The end of the pull roller away from the cutter head is provided with a compensation seat. The side of the compensation seat opposite to the pull roller is rotatably connected to a roller and a rolling element that is driven to the roller. The rotation axis of the roller is perpendicular to the moving direction of the pull roller. The roller is adsorbed and connected to the rotating roller. The rolling element is used to drive the roller to rotate.

7. The water drilling and investigation equipment for underground old mine shafts in closed mining areas as described in claim 6, characterized in that, The compensation seat is slidably connected to the traction roller, and the compensation seat slides along the moving direction of the traction roller. An elastic member is fixed between the compensation seat and the traction roller, and the elastic member has a preload force that causes the compensation seat to move away from the traction roller.

8. The water drilling and investigation equipment for underground old mines in closed mining areas as described in claim 2, characterized in that, The power assembly includes: Multiple linked bevel gears are fixedly connected to the outer periphery of the traction sleeve in a one-to-one correspondence; The transmission bevel gear meshes synchronously with all the linkage bevel gears; A power component is connected to the transmission bevel gear, and the power component is used to drive the transmission bevel gear to rotate.

9. The water drilling and investigation equipment for underground old mines in closed mining areas as described in claim 2, characterized in that, The center seat has a guide hole for the traction roller to pass through, a guide block is fixed to the inner wall of the guide hole, and a guide groove is provided on the outer wall of the traction roller to slide and adapt to the guide block. The guide groove extends along the axial direction of the traction roller.

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