An integrated device for boring and milling leg holes of wind turbine installation vessels

Abstract

This invention provides an integrated boring and milling device for wind turbine installation vessel leg holes, belonging to the field of metal cutting technology. It includes a boring bar and a milling cutter, as well as an arc-shaped traveling frame. A movable stage is slidably mounted within the arc-shaped traveling frame, and a two-dimensional translation stage is fixedly mounted on the movable stage. Three limiting sliding columns are fixedly mounted on the top of the upper motion platform of the two-dimensional translation stage. A common lifting platform is slidably sleeved on the three limiting sliding columns. A rotating cylinder is rotatably mounted through and on the lifting platform, with its bottom end extending below the movable stage. A motor is fixedly mounted on the top of the lifting platform. The integrated boring and milling device for wind turbine installation vessel leg holes provided by this invention has the advantages of improving processing efficiency and accuracy, adopting a built-in boring bar feed mechanism to expand the adaptability range of small-diameter leg holes, and being equipped with an automatic chip cleaning system to ensure smooth transmission and enhance operational reliability.

Description

Technical Field

[0001] This invention relates to the field of metal cutting and machining technology, and in particular to an integrated device for boring and milling leg holes of wind turbine installation vessels. Background Technology

[0002] As a key structure supporting the hull and operating equipment, the machining accuracy of the leg holes on wind turbine installation vessels directly affects the assembly stability of the legs and related components, as well as the safe operation of the overall equipment. Boring and milling are two core processes in leg hole machining. Boring ensures the dimensional accuracy, roundness, and surface finish of the holes, while milling handles the forming of related structures such as the end face and stepped surfaces of the holes. Currently, the industry typically uses separate equipment for boring and milling leg holes, employing dedicated boring and milling equipment sequentially. These two types of equipment must be installed and debugged separately according to the machining process before being put into use.

[0003] However, existing boring and milling equipment for ship leg holes has the following shortcomings: First, the boring and milling equipment are independent of each other. During processing, the boring operation must be completed first, the boring equipment must be disassembled, and then the milling equipment must be installed and debugged. This not only results in time loss due to multiple alignments and equipment switching, but also leads to low processing efficiency. Second, the boring and milling equipment are installed and debugged based on different benchmarks. Errors are easily generated during the secondary calibration process, making it difficult to guarantee the coaxiality and positional accuracy of the boring and milling processes, which affects the overall processing quality of the leg holes.

[0004] Therefore, it is necessary to provide an integrated device for boring and milling the pile leg holes of wind turbine installation vessels to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem solved by this invention is to provide an integrated boring and milling device for wind turbine installation vessel pile leg holes that allows the boring cutter and milling cutter to work synchronously, thereby improving processing efficiency and accuracy. It adopts a built-in boring cutter feed mechanism to expand the adaptability range of small-diameter pile leg holes and is equipped with an automatic chip cleaning system to ensure smooth transmission and enhance operational reliability.

[0006] To solve the above-mentioned technical problems, the present invention provides an integrated device for boring and milling the leg holes of wind turbine installation vessels, including a boring bar and a milling cutter, and an arc-shaped traveling frame. A moving platform is slidably installed inside the arc-shaped traveling frame, and a two-dimensional translation platform is fixedly installed on the moving platform. The same lifting platform is slidably installed on the top of the upper motion platform of the two-dimensional translation platform. A rotating cylinder is rotatably installed through the lifting platform, and the bottom end of the rotating cylinder extends to the bottom of the moving platform. A first motor is fixedly installed on the top of the lifting platform, and the first motor is connected to the rotating cylinder in a transmission connection. A second motor is fixedly installed on the upper motion platform of the two-dimensional translation platform. A first lead screw is threaded through the lifting platform, and the bottom end of the first lead screw is fixedly connected to the output end of the second motor.

[0007] A movable slide bar is slidably mounted through and near the bottom of the rotary drum. The boring tool is mounted on one end of the movable slide bar. A boring tool feeding mechanism is provided inside the rotary drum. The boring tool feeding mechanism is used to drive the movable slide bar to move so as to realize the feeding action of the boring tool.

[0008] A fixed cylinder is fixedly installed at the bottom of the upper motion platform of the two-dimensional translation stage. The fixed cylinder is coaxial with the rotating cylinder. A milling cutter adjustment mechanism is provided on the fixed cylinder. The milling cutter is installed on the milling cutter adjustment mechanism. The milling cutter adjustment mechanism is used to adjust the milling radius and depth of the milling cutter.

[0009] Two arc-shaped racks are fixedly installed on the arc-shaped walking frame. A walking mechanism is provided on the top of the moving platform. The walking mechanism is used to cooperate with the two arc-shaped racks to drive the moving platform to move along the arc direction on the arc-shaped walking frame.

[0010] Preferably, arc-shaped limiting grooves are provided on the inner walls of both sides of the arc-shaped walking frame, and multiple supporting rollers are rotatably installed on the outer walls of both sides of the moving platform. The ends of the multiple supporting rollers away from the moving platform extend into the corresponding arc-shaped limiting grooves and are slidably connected to the inner walls of the corresponding arc-shaped limiting grooves.

[0011] Preferably, the walking mechanism includes a rotating shaft, two gears (5) and a motor (5). The rotating shaft is rotatably mounted on the top of the moving platform. The two gears (5) are respectively fixedly sleeved at both ends of the rotating shaft and mesh with the two arc-shaped racks. A gear (6) is fixedly sleeved on the output end of the motor (5), and a gear (7) is fixedly sleeved on the rotating shaft. The gear (6) meshes with the gear (7).

[0012] Preferably, the milling cutter adjusting mechanism includes a collar, a third motor, a slide rail, a slide block, a first electric push rod, a second electric push rod, and a fourth motor. The collar is rotatably sleeved at the bottom end of the fixed cylinder. The third motor is fixedly mounted on the collar. A third gear is fixedly sleeved on the output end of the third motor. A fourth gear is fixedly sleeved on the fixed cylinder. The third gear meshes with the fourth gear. The slide rail is fixedly mounted on the collar. The slide block is slidably sleeved on the slide rail. A polygonal sliding column is slidably mounted through and on the slide block. A fixed base is fixedly installed at the bottom end of the polygonal sliding column. A rotating rod is rotatably installed on the fixed base. The milling cutter is installed at the bottom end of the rotating rod. A motor is fixedly installed at the top of the fixed base. The output end of the motor is fixedly connected to the top end of the rotating rod. An electric push rod is fixedly installed at the top of the slide block. The output end of the electric push rod is fixedly connected to the top end of the polygonal sliding column. An electric push rod is fixedly installed on the collar. The output end of the electric push rod is fixedly connected to the slide block.

[0013] Preferably, the slide rail has an avoidance opening, the polygonal sliding column passes through the avoidance opening and is movably connected to the inner wall of the avoidance opening.

[0014] Preferably, the boring tool feed mechanism includes a lifting push rod, a first rack, a worm, a worm wheel, a ninth gear, and a second rack. The lifting push rod is slidably installed inside the rotating drum and is coaxial with the rotating drum. The first rack is slidably installed inside the rotating drum. A crank is fixedly installed at the bottom end of the lifting push rod, and the bottom end of the crank is fixedly connected to the top of the first rack. A second rotating rod is rotatably installed inside the rotating drum. The worm is rotatably sleeved on the second rotating rod. A eighth gear is fixedly sleeved on the second rotating rod and meshes with the first rack. A third rotating rod is rotatably installed inside the rotating drum. The worm wheel is fixedly sleeved at the top end of the third rotating rod and meshes with the worm wheel. A ninth gear is fixedly sleeved at the bottom end of the third rotating rod. A second rack is fixedly installed on the outer wall of the movable slide near the third rotating rod, and the ninth gear meshes with the second rack.

[0015] The lifting platform is equipped with a power component, which is used to drive the lifting push rod to move up and down.

[0016] Preferably, a C-shaped limiting member is fixedly installed on the inner wall of the rotating drum, and limiting sliders are fixedly installed on both inner walls of the C-shaped limiting member. Limiting slides are opened on both outer walls of the rack. The ends of the two limiting sliders that are close to each other extend into the corresponding limiting slides and slide in a sliding connection with the inner wall of the corresponding limiting slides.

[0017] Preferably, the power assembly includes a limiting slide column two, a lifting plate, a lead screw two, and a motor six. The limiting slide column two and the motor six are both fixedly installed on the top of the lifting platform. The lifting plate is slidably sleeved on the limiting slide column two. The lead screw two is fixedly installed on the output end of the motor six. The lead screw two passes through the lifting plate and is threadedly connected to the lifting plate. A connecting plate is fixedly installed at the top of the limiting slide column two. The top of the lead screw two is rotatably connected to the connecting plate. The lifting push rod is rotatably connected to the lifting plate.

[0018] Furthermore, an air jet box is fixedly installed on the outer wall of the rotating cylinder near its bottom end. The air jet box is located above the movable slide bar. An upper air pipe is slidably installed inside the rotating cylinder, and a flexible hose is fixedly connected to the bottom end of the upper air pipe. A lower air pipe is fixedly installed inside the rotating cylinder, and the bottom end of the flexible hose is fixedly connected to the top end of the lower air pipe. The bottom end of the lower air pipe extends outside the rotating cylinder and is fixedly connected to the top of the air jet box. A convex air box is fixedly installed at the top end of the lifting push rod. A hollow rod is fixedly installed on the lifting bar. The top of the convex air box is rotatably and sealingly connected to the bottom end of the hollow rod. A connecting pipe is fixedly installed at the center of the top end of the hollow rod. An air pump is fixedly installed on the top of the lifting bar. An exhaust pipe is fixedly installed on the air outlet of the air pump. The bottom end of the exhaust pipe is fixedly connected to the top end of the connecting pipe. The top end of the upper air pipe extends above the rotating cylinder and is fixedly connected to the convex air box.

[0019] Preferably, the bottom of the jet box is provided with a jet nozzle, which is located directly above the second spur rack.

[0020] Compared with related technologies, the integrated boring and milling device for wind turbine installation vessel leg holes provided by this invention has the following advantages:

[0021] The device integrates a boring bar and a milling cutter, both driven and adjusted independently. The boring bar is powered by motor one, and its axial and radial adjustments are achieved through motor two and the boring bar feed mechanism. The milling cutter is driven by motor four, and its adjustment is accomplished with the help of motor three and an electric push rod. During machining, the boring bar and the milling cutter can operate synchronously, while the moving table moves along the arc of the curved traveling frame, expanding the coverage area and reducing the number of adjustments to the ship's pile legs. This eliminates the need for multiple alignments and switching times required by traditional equipment. Furthermore, synchronous machining based on the same reference (the fixed cylinder and the rotating cylinder are coaxial) avoids secondary calibration errors, effectively improving machining efficiency and accuracy.

[0022] The boring tool feed mechanism is built into the rotary drum, integrating the lifting push rod, rack and pinion, worm gear, and worm wheel transmission components within the drum. This completely avoids the space occupation problem caused by the overlapping radial dimensions of traditional external feed structures. The minimum machinable hole diameter is limited only by the rotary drum itself, allowing it to accommodate smaller diameter pile leg holes and expanding its applicability. Simultaneously, the reverse self-locking characteristics of the worm gear and worm wheel stably lock the position of the moving slide bar, resisting the reaction of cutting forces, preventing feed rate deviation, and ensuring boring accuracy.

[0023] By setting up components such as an air pump, exhaust pipe, convex air box, upper air pipe, hose, and lower air pipe, a permeable path is formed inside the rotating drum. The high-pressure gas generated by the air pump is transported to the jet box through the above-mentioned air path and is directionally sprayed onto the rack 2 through the jet nozzle, which promptly removes the debris on the rack 2 and prevents it from getting stuck in the meshing with gear 9. This helps to ensure smooth transmission and improve the reliability of the device operation. The hose can adapt to the lifting and lowering movement of the upper air pipe, and the convex air box is rotatably sealed to the hollow rod. This allows the various components of the automatic cleaning system to adapt to the lifting and rotating movements of the lifting push rod in the boring tool feed mechanism during operation, without hindering the operation of the boring tool feed mechanism. This ensures that the cleaning function and boring processing are carried out in synergy. Attached Figure Description

[0024] Figure 1 A schematic diagram of the integrated device for boring and milling the leg holes of wind turbine installation vessels provided by the present invention;

[0025] Figure 2 for Figure 1 The diagram shows the structure of the mobile station.

[0026] Figure 3 for Figure 2 An enlarged schematic diagram of part A shown;

[0027] Figure 4 for Figure 2 A structural schematic diagram from another perspective is shown;

[0028] Figure 5 for Figure 4 The diagram shows a partial structural representation.

[0029] Figure 6 for Figure 5 The diagram shows the structure of the milling cutter adjustment mechanism.

[0030] Figure 7 for Figure 6 A structural schematic diagram from another perspective is shown;

[0031] Figure 8 for Figure 5 The diagram shows the structure of the rotating drum.

[0032] Figure 9 for Figure 8 The diagram shows the structure after the rotating drum is hidden.

[0033] Figure 10 for Figure 9 An enlarged schematic diagram of part B shown;

[0034] Figure 11 for Figure 9 An enlarged schematic diagram of section C shown;

[0035] Figure 12 for Figure 10 An enlarged schematic diagram of part D shown;

[0036] Figure 13 for Figure 11 The diagram shows a cross-sectional view of the convex air box.

[0037] Numbering on the map:

[0038] 1. Arc-shaped traveling frame; 2. Arc-shaped rack; 3. Moving table; 4. Two-dimensional translation table; 5. Limiting slide column one; 6. Lifting platform; 7. Rotary drum; 8. Motor one; 9. Gear one; 10. Gear two; 11. Motor two; 12. Lead screw one; 13. Boring cutter; 14. Milling cutter; 15. Fixed cylinder; 16. Ring; 17. Motor three; 18. Gear three; 19. Gear four; 20. Slide rail; 21. Slide base; 22. Electric push rod one; 23. Electric push rod two; 24. Fixed base; 25. Rotating rod one; 26. Motor four; 27. Rotating shaft; 28. 29. Gear 5; 30. Motor 5; 31. Gear 6; 32. Gear 7; 33. Lifting push rod; 34. Crank rod; 35. Spur rack 1; 36. Rotating rod 2; 37. Worm gear; 38. Gear 8; 39. Rotating rod 3; 40. Worm wheel; 41. Gear 9; 42. Moving slide bar; 43. Spur rack 2; 44. Limiting slide column 2; 45. Lifting bar; 46. Lead screw 2; 47. Motor 6; 48. Air pump; 49. Convex air box; 50. Hollow rod; 51. Exhaust pipe; 52. Upper air pipe; 53. Hose; 54. Lower air pipe; 55. Jet box. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Please refer to the following: Figures 1-13An integrated device for boring and milling leg holes of wind turbine installation vessels includes a boring bar 13 and a milling cutter 14, and an arc-shaped traveling frame 1. The arc-shaped traveling frame 1 provides an arc-shaped motion track for the entire device. A moving platform 3 is slidably installed inside the arc-shaped traveling frame 1. Specifically, arc-shaped limiting grooves are formed on the inner walls of both sides of the arc-shaped traveling frame 1. Multiple support rollers are rotatably installed on the outer walls of both sides of the moving platform 3. The ends of the multiple support rollers away from the moving platform 3 extend into the corresponding arc-shaped limiting grooves and are slidably connected to the inner walls of the corresponding arc-shaped limiting grooves. The moving platform 3 is fixed with... A two-dimensional translation stage 4 is installed, enabling precise horizontal movement along the X and Y axes. This stage is used to adjust the machining positions of the boring bar 13 and the milling cutter 14 in the horizontal plane. A lifting platform 6 is slidably mounted on the top of the upper motion platform of the two-dimensional translation stage 4. Specifically, three limiting slide columns 5 are fixedly installed on the top of the upper motion platform of the two-dimensional translation stage 4. The lifting platform 6 is slidably fitted onto the three limiting slide columns 5. The limiting slide columns 5 guide and limit the lifting movement of the lifting platform 6, ensuring its stable vertical movement. A rotating cylinder 7 is rotatably mounted through and on the lifting platform 6. The bottom end of the cylinder 7 extends below the moving platform 3. A motor 8 is fixedly installed on the top of the lifting platform 6. The motor 8 is connected to the rotating drum 7 via a transmission connection. Specifically, a gear 9 is fixedly fitted on the output end of the motor 8, and a gear 10 is fixedly fitted on the rotating drum 7 near its top. Gear 9 and gear 10 mesh. The motor 8 drives the rotating drum 7 to rotate around its own axis through the meshing of gear 9 and gear 10, providing rotational cutting power for the boring tool 13. A linear bearing is fixedly installed on the upper motion platform of the two-dimensional translation stage 4. Through the linear bearing, the lower motion platform of the two-dimensional translation stage 4 and the center of the base are provided with clearance openings. The moving stage 3 is also provided with clearance openings to provide space for the position adjustment of the rotating drum 7. The upper motion platform of the two-dimensional translation stage 4 is fixedly installed with motor 11. The lifting stage 6 is threaded with lead screw 12. The bottom end of lead screw 12 is fixedly connected to the output end of motor 11. Motor 11 drives lead screw 12 to rotate, and through the lead screw nut, the lifting stage 6 is driven to rise and fall along the limit slide column 5 to realize the axial feed adjustment of the boring tool 13.

[0041] A movable slide bar 41 is slidably mounted through and near the bottom of the rotating cylinder 7. The movable slide bar 41 can slide radially along the rotating cylinder 7. The boring tool 13 is mounted at one end of the movable slide bar 41 and moves synchronously with the movable slide bar 41. A boring tool feeding mechanism is provided inside the rotating cylinder 7. The boring tool feeding mechanism is used to drive the movable slide bar 41 to move so as to realize the radial feeding action of the boring tool 13, and complete the boring operation in conjunction with the rotation of the rotating cylinder 7.

[0042] A fixed cylinder 15 is fixedly installed at the bottom of the upper motion platform of the two-dimensional translation stage 4. The fixed cylinder 15 is coaxial with the rotating cylinder 7 to ensure that the machining datum of the milling cutter 14 and the boring cutter 13 are consistent. A milling cutter adjustment mechanism is provided on the fixed cylinder 15. The milling cutter 14 is installed on the milling cutter adjustment mechanism. The milling cutter adjustment mechanism is used to adjust the milling radius and depth of the milling cutter 14 to realize the milling machining of the end face of the pile leg hole, the step surface and the stepped hole.

[0043] Two arc-shaped racks 2 are fixedly installed on the arc-shaped traveling frame 1. A traveling mechanism is provided on the top of the moving platform 3. The traveling mechanism is used to cooperate with the two arc-shaped racks 2 to drive the moving platform 3 to move along the arc direction on the arc-shaped traveling frame 1, so as to realize the processing coverage of different circumferential positions of the pile leg hole. Specifically, the traveling mechanism includes a rotating shaft 27, two gears 28, and a motor 29. The rotating shaft 27 is rotatably installed on the top of the moving platform 3. The two gears 28 are fixedly sleeved at both ends of the rotating shaft 27, and the two gears 28 mesh with the two arc-shaped racks 2 respectively. The output end of the motor 29 is fixedly fitted with a gear 30, and the rotating shaft 27 is fixedly fitted with a gear 31. The gears 30 and 31 mesh with each other. The output torque of the motor 29 is transmitted to the rotating shaft 27 after being driven by the meshing of the gears 30 and 31, which drives the two gears 28 to rotate synchronously. The gears 28 mesh with the arc rack 2, converting the rotational motion into the arc translational motion of the moving table 3. The symmetrical arrangement of the two gears 28 and the two arc racks 2 can balance the meshing reaction force, prevent the moving table 3 from tilting, and improve the motion accuracy.

[0044] In this embodiment, walking support components are also adapted and installed at both ends of the arc-shaped walking frame 1. These components can roll along the I-beam slide rails located on both sides of the ship pile leg to realize the overall displacement adjustment and mechanical support of the arc-shaped walking frame 1. This type of mechanism is a mature implementation scheme known to those skilled in the art in mechanical track walking systems, and its structural details will not be described in detail here.

[0045] In this embodiment, the milling cutter adjustment mechanism includes a collar 16, a third motor 17, a slide rail 20, a slide block 21, a first electric push rod 22, a second electric push rod 23, and a fourth motor 26. The collar 16 is rotatably sleeved at the bottom of the fixed cylinder 15 and can rotate around the axis of the fixed cylinder 15. The third motor 17 is fixedly mounted on the collar 16, and a third gear 18 is fixedly sleeved on the output end of the third motor 17. A fourth gear 19 is fixedly sleeved on the fixed cylinder 15, and the third gear 18 and the fourth gear 19 mesh. The third motor 17 drives the collar 16 to rotate through the meshing of the third gear 18 and the fourth gear 19, thereby realizing the circumferential angle adjustment of the milling cutter 14. The slide rail 20 is fixedly mounted on the collar 16, and the slide block 21 is slidably sleeved on the slide rail 20. A polygonal sliding column is slidably mounted through and on the slide block 21. A fixed seat 24 is fixedly mounted on the bottom end of the polygonal sliding column to restrict the rotation of the fixed seat 24 and ensure the stability of the cutting direction of the milling cutter 14. A rotating rod is rotatably mounted on the fixed seat 24. 25. The milling cutter 14 is installed at the bottom end of the rotating rod 25. The top of the fixed base 24 is fixedly installed with the motor 26. The output end of the motor 26 is fixedly connected to the top end of the rotating rod 25 to provide cutting power for the milling cutter 14. The electric push rod 22 is fixedly installed on the top of the slide 21. The output end of the electric push rod 22 is fixedly connected to the top end of the polygonal slide column. The electric push rod 23 is fixedly installed on the collar 16. The output end of the electric push rod 23 is fixedly connected to the slide 21. The extension and retraction of the electric push rod 22 drives the polygonal slide column and the fixed base 24 to rise and fall, thereby adjusting the axial milling depth of the milling cutter 14. The extension and retraction of the electric push rod 23 pushes the slide 21 to move radially along the slide rail 20, thereby adjusting the milling radius of the milling cutter 14. Through the three-dimensional adjustment of the collar 16 rotation, the radial movement of the slide 21, and the axial rise and fall of the fixed base 24, combined with the rotation of the milling cutter 14 driven by the motor 26, milling processing at different positions and depths on the end face of the pile leg hole can be achieved.

[0046] In this embodiment, the slide rail 20 is provided with a clearance opening, the polygonal slide column passes through the clearance opening and is movably connected to the inner wall of the clearance opening. The clearance opening provides space for the polygonal slide column to move radially with the slide block 21, thereby avoiding interference between the slide rail 20 and the polygonal slide column.

[0047] In this embodiment, the boring tool feed mechanism includes a lifting push rod 32, a first rack 34, a worm gear 36, a worm wheel 39, a ninth gear 40, and a second rack 42. The lifting push rod 32 is slidably installed inside the rotating drum 7 and is coaxial with the rotating drum 7, allowing it to slide axially along the rotating drum 7. The first rack 34 is slidably installed inside the rotating drum 7. A crank 33 is fixedly installed at the bottom end of the lifting push rod 32, and the bottom end of the crank 33 is fixedly connected to the top of the first rack 34. The lifting push rod 32 drives the first rack 34 to slide axially synchronously through the crank 33. A second rotating rod 35 is rotatably installed inside the rotating drum 7, and the worm gear 36 is rotatably sleeved. On the rotating rod 2 35, a gear 8 37 is fixedly sleeved. The gear 8 37 meshes with the rack 1 34. The rack 1 34 slides, driving the gear 8 37 and the rotating rod 2 35 to rotate, which in turn drives the worm 36 to rotate synchronously. A rotating rod 3 38 is rotatably installed inside the rotating cylinder 7. A worm wheel 39 is fixedly sleeved on the top of the rotating rod 3 38. The worm 36 meshes with the worm wheel 39. The worm 36 drives the worm wheel 39 and the rotating rod 3 38 to rotate. A gear 9 40 is fixedly sleeved on the bottom end of the rotating rod 3 38. A rack 2 42 is fixedly installed on the outer wall of the movable slide bar 41 near the rotating rod 3 38. Gear 9 40 meshes with rack 2 42. Rotating rod 3 38 drives the sliding slide 41 radially through the meshing of gear 9 40 and rack 2 42, realizing the feed of boring tool 13. Utilizing the reverse self-locking characteristic of worm gear transmission, the position of sliding slide 41 can be locked after boring tool 13 has been fed into place, avoiding feed deviation caused by cutting force reaction and ensuring the dimensional accuracy of the boring hole. Compared with the traditional design where the boring tool feed component is placed outside the rotating spindle, this type of external structure will increase the minimum machinable diameter of the boring hole due to the superposition of its own radial dimensions (for example, the radius of the boring tool rotating spindle is...). 50mm, the external feed mechanism requires an additional 100mm of radial space, so the minimum machining diameter of the boring tool needs to be ≥Φ300mm). However, this invention, through its built-in design, embeds the transmission structure into the rotating drum 7, which not only avoids the interference of external redundant components with the rotational cutting action of the boring tool 13, but also completely eliminates the problem of radial space encroachment by the external structure. This makes the minimum machinable diameter of the boring tool 13 only limited by the structure of the rotating drum 7 itself, greatly expanding the adaptability of the device to the machining of small-diameter pile leg holes. At the same time, the built-in layout can also use the shell of the rotating drum 7 to protect the internal transmission components, reducing the erosion of cutting debris and related components.

[0048] The lifting platform 6 is equipped with a power assembly, which drives the lifting push rod 32 to move up and down. Specifically, the power assembly includes a limiting slide column 43, a lifting plate 44, a lead screw 45, and a motor 46. The limiting slide column 43 and the motor 46 are both fixedly installed on the top of the lifting platform 6. The lifting plate 44 is slidably sleeved on the limiting slide column 43, which provides a lifting guide for the lifting plate 44. The lead screw 45 is fixedly installed on the output end of the motor 46, passes through the lifting plate 44, and is threadedly connected to the lifting plate 44. A connecting plate is fixedly installed at the top of the limiting slide column 43, and the top of the lead screw 45 is rotatably connected to the connecting plate. The lifting push rod 32 is rotatably connected to the lifting plate 44. The motor 46 drives the lead screw 45 to rotate, which drives the lifting plate 44 to rise and fall along the limiting slide column 43 through the lead screw nut, thereby driving the lifting push rod 32 to move axially synchronously, providing power input for the boring tool feeding mechanism.

[0049] In this embodiment, a C-shaped limiting member is fixedly installed on the inner wall of the rotating drum 7. Limiting sliders are fixedly installed on both inner walls of the C-shaped limiting member. Limiting slides are opened on both outer walls of the rack-gear 34. The ends of the two limiting sliders that are close to each other extend into the corresponding limiting slides and slide in a sliding connection with the inner wall of the corresponding limiting slides. The C-shaped limiting member restricts the movement direction of the rack-gear 34 through the cooperation of the limiting sliders and the limiting slides, ensuring that it slides only in a straight line along the axial direction, thereby improving the transmission accuracy.

[0050] In this embodiment, an air jet box 54 is fixedly installed on the outer wall of the rotating cylinder 7 near its bottom end. The air jet box 54 is located above the movable slide bar 41. An upper air pipe 51 is slidably installed inside the rotating cylinder 7. A flexible hose 52 is fixedly connected to the bottom end of the upper air pipe 51. The flexible hose 52 can guide air and also adapt to the lifting and lowering movement of the upper air pipe 51. A lower air pipe 53 is fixedly installed inside the rotating cylinder 7. The bottom end of the flexible hose 52 is fixedly connected to the top end of the lower air pipe 53. The bottom end of the lower air pipe 53 extends outside the rotating cylinder 7 and is fixedly connected to the top of the air jet box 54. A convex air box 48 is fixedly installed at the top end of the lifting push rod 32. A hollow rod 49 is fixedly installed on the lifting bar 44. The top of the convex air box 48 is rotatably and sealingly connected to the bottom end of the hollow rod 49. A connecting pipe is fixedly installed at the center of the top of the rod 49. An air pump 47 is fixedly installed on the top of the lifting bar 44. An exhaust pipe 50 is fixedly installed on the air outlet of the air pump 47. The bottom end of the exhaust pipe 50 is fixedly connected to the top of the connecting pipe. The top end of the upper air pipe 51 extends to the top of the rotating drum 7 and is fixedly connected to the convex air box 48. The high-pressure gas generated by the air pump 47 is sequentially transported to the jet box 54 through the exhaust pipe 50, hollow rod 49, convex air box 48, upper air pipe 51, hose 52, and lower air pipe 53 to clean the rack 2 42 with air jets, so as to prevent debris from sticking to the rack 2 42 and affecting its normal meshing with the gear 9 40. The above air circuit design can adapt to the lifting and rotating motion of the lifting push rod 32 and ensure continuous and stable air supply.

[0051] In this embodiment, the bottom of the jet box 54 is provided with a jet nozzle, which is located directly above the rack 42. The jet nozzle sprays high-pressure gas in a directional manner, which can accurately clean the cutting chips on the rack 42 and avoid chip jamming that affects the transmission accuracy.

[0052] In this embodiment:

[0053] When the device is in use, the overall displacement adjustment is achieved by the rolling of the walking support components at both ends of the arc-shaped walking frame 1 along the external I-beam slide rail; the moving table 3 moves along the arc-shaped trajectory of the arc-shaped walking frame 1 under the drive of the walking mechanism. The torque output by the motor 29 is transmitted to the rotating shaft 27 through the gear 30 and gear 31, which drives the gear 28 at both ends to mesh with the arc-shaped rack 2, converting the rotational motion into the arc-shaped translation of the moving table 3. With the help of the support roller rolling guide in the arc-shaped limiting slide groove, the device can cover different circumferential positions of the pile leg hole. The two-dimensional translation table 4 moves precisely through the X and Y axes to finely adjust the machining position of the boring tool 13 and the milling cutter 14 in the horizontal plane to ensure that the machining reference of both is accurate.

[0054] During boring, motor 8 drives the rotating drum 7 to rotate around its own axis through the meshing of gear 9 and gear 10, which in turn drives the boring tool 13 to rotate synchronously, providing cutting power. Motor 11 drives the lead screw 12 to rotate, which drives the lifting platform 6 to rise or fall along the limiting slide column 5 through the lead screw nut, thereby adjusting the axial feed depth of the boring tool 13. When motor 46 is running, it drives the lead screw 45 to rotate, which drives the lifting plate 44 to rise or fall along the limiting slide column 43, thereby pushing the lifting push rod 32 to move axially. The lifting push rod 32 drives the straight rack 34 through the crank rod 33. Sliding, under the limiting action of the C-shaped limiting part, the rack 34 slides only in a straight line along the axial direction, causing the gear 37 and the rotating rod 35 to rotate, driving the worm 36 to rotate synchronously. The worm 36 meshes with the worm wheel 39 to realize the reversal of motion, driving the rotating rod 38 and the gear 40 to rotate. Finally, through the meshing of the gear 40 and the rack 42, the moving slide bar 41 is pushed to move radially, completing the precise feed of the boring tool 13. The self-locking characteristics of the worm 36 and the worm wheel 39 ensure the stability of the position of the boring tool 13 after feeding. Moreover, the boring tool feed structure is a built-in design, which greatly reduces the range of the minimum machinable hole diameter.

[0055] During the boring process described above, the milling cutter 14 can simultaneously perform milling operations. During milling, the milling cutter adjustment mechanism achieves multi-part milling through three-dimensional adjustment, which does not interfere with the boring operation of the boring cutter 13. When the motor 4 26 runs, it drives the rotating rod 1 25 to rotate, which drives the milling cutter 14 to rotate at high speed. The motor 3 17 drives the gear 3 18 to mesh with the gear 4 19 on the fixed cylinder 15, which drives the collar 16 to rotate around the fixed cylinder 15, thereby adjusting the circumferential coverage of the milling cutter 14. In terms of radial and depth adjustment, the electric push rod 2 23 pushes the slide block 21 to move radially along the slide rail 20, changing the cutting radius of the milling cutter 14. The electric push rod 1 22 extends and retracts, driving the polygonal slide column and the fixed seat 24 to rise and fall, adjusting the axial milling depth of the milling cutter 14. The polygonal slide column passes through the avoidance square opening on the slide rail 20, avoiding motion interference. With the coordinated action of rotating collar 16, moving slide 21 and lifting fixed seat 24, milling of pile leg hole end face, step face and stepped hole is achieved, while boring tool 13 can continuously perform boring operation.

[0056] The high-pressure gas generated by the air pump 47 is delivered to the jet box 54 through the exhaust pipe 50, hollow rod 49, convex air box 48, upper air pipe 51, hose 52 and lower air pipe 53. It is then sprayed onto the rack 42 through the jet nozzle located directly above the rack 42 at the bottom. This can promptly clean the cutting debris attached to the rack 42, prevent debris from getting stuck and affecting the transmission accuracy, and ensure the stability of the simultaneous machining process of the boring tool 13 and the milling cutter 14.

[0057] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An integrated device for boring and milling leg holes of wind turbine installation vessels, comprising a boring bar and a milling cutter, characterized in that, It also includes an arc-shaped walking frame, in which a moving platform is slidably installed. A two-dimensional translation platform is fixedly installed on the moving platform. A lifting platform is slidably installed on the top of the upper motion platform of the two-dimensional translation platform. A rotating cylinder is installed through and rotatably on the lifting platform. The bottom end of the rotating cylinder extends to the bottom of the moving platform. A first motor is fixedly installed on the top of the lifting platform. The first motor is connected to the rotating cylinder in a transmission connection. A second motor is fixedly installed on the upper motion platform of the two-dimensional translation platform. A first lead screw is threaded through and installed on the lifting platform. The bottom end of the first lead screw is fixedly connected to the output end of the second motor. A movable slide bar is slidably mounted through and near the bottom of the rotary drum. The boring tool is mounted on one end of the movable slide bar. A boring tool feeding mechanism is provided inside the rotary drum. The boring tool feeding mechanism is used to drive the movable slide bar to move so as to realize the feeding action of the boring tool. A fixed cylinder is fixedly installed at the bottom of the upper motion platform of the two-dimensional translation stage. The fixed cylinder is coaxial with the rotating cylinder. A milling cutter adjustment mechanism is provided on the fixed cylinder. The milling cutter is installed on the milling cutter adjustment mechanism. The milling cutter adjustment mechanism is used to adjust the milling radius and depth of the milling cutter. The milling cutter adjustment mechanism includes a collar, a third motor, a slide rail, a slide block, a first electric push rod, a second electric push rod, and a fourth motor. The collar is rotatably sleeved at the bottom of the fixed cylinder. The third motor is fixedly mounted on the collar. A third gear is fixedly sleeved on the output end of the third motor. A fourth gear is fixedly sleeved on the fixed cylinder. The third gear meshes with the fourth gear. The slide rail is fixedly mounted on the collar. The slide block is slidably sleeved on the slide rail. A polygonal sliding column is slidably mounted through and on the slide block. A fixed seat is fixedly mounted at the bottom end of the polygonal sliding column. A first rotating rod is rotatably mounted on the fixed seat. The milling cutter is mounted at the bottom end of the first rotating rod. The fourth motor is fixedly mounted on the top of the fixed seat. The output end of the fourth motor is fixedly connected to the top end of the first rotating rod. The first electric push rod is fixedly mounted on the top of the slide block. The output end of the first electric push rod is fixedly connected to the top end of the polygonal sliding column. The second electric push rod is fixedly mounted on the collar. The output end of the second electric push rod is fixedly connected to the slide block. The boring tool feed mechanism includes a lifting push rod, a first rack, a worm, a worm wheel, a ninth gear, and a second rack. The lifting push rod is slidably installed inside the rotating drum and is coaxial with the rotating drum. The first rack is slidably installed inside the rotating drum. A crank is fixedly installed at the bottom end of the lifting push rod, and the bottom end of the crank is fixedly connected to the top of the first rack. A second rotating rod is rotatably installed inside the rotating drum. The worm is rotatably sleeved on the second rotating rod. A eighth gear is fixedly sleeved on the second rotating rod and meshes with the first rack. A third rotating rod is rotatably installed inside the rotating drum. The worm wheel is fixedly sleeved at the top end of the third rotating rod and meshes with the worm wheel. A ninth gear is fixedly sleeved at the bottom end of the third rotating rod. A second rack is fixedly installed on the outer wall of the movable slide near the third rotating rod, and the ninth gear meshes with the second rack. The lifting platform is equipped with a power component, which is used to drive the lifting push rod to move up and down.

2. The integrated device for boring and milling leg holes of wind turbine installation vessels according to claim 1, characterized in that, The inner walls of both sides of the curved walking frame are provided with arc-shaped limiting grooves. Multiple supporting rollers are rotatably installed on the outer walls of both sides of the moving platform. The ends of the multiple supporting rollers away from the moving platform extend into the corresponding arc-shaped limiting grooves and are slidably connected to the inner walls of the corresponding arc-shaped limiting grooves.

3. The integrated device for boring and milling leg holes of wind turbine installation vessels according to claim 1, characterized in that, Two arc-shaped racks are fixedly installed on the arc-shaped walking frame. A walking mechanism is provided on the top of the moving platform. The walking mechanism is used to cooperate with the two arc-shaped racks to drive the moving platform to move along the arc direction on the arc-shaped walking frame. The walking mechanism includes a rotating shaft, two gears (5) and a motor (5). The rotating shaft is rotatably mounted on the top of the moving platform. The two gears (5) are respectively fixedly sleeved at both ends of the rotating shaft and mesh with the two arc-shaped racks. A gear (6) is fixedly sleeved on the output end of the motor (5), and a gear (7) is fixedly sleeved on the rotating shaft. The gear (6) meshes with the gear (7).

4. The integrated device for boring and milling leg holes of wind turbine installation vessels according to claim 1, characterized in that, The slide rail has an opening for clearance, and the polygonal sliding column passes through the opening and is movably connected to the inner wall of the opening.

5. The integrated device for boring and milling leg holes of wind turbine installation vessels according to claim 1, characterized in that, A C-shaped limiting component is fixedly installed on the inner wall of the rotating cylinder. Limiting sliders are fixedly installed on both inner walls of the C-shaped limiting component. Limiting slides are opened on both outer walls of the straight rack. The ends of the two limiting sliders that are close to each other extend into the corresponding limiting slides and slide in a sliding connection with the inner wall of the corresponding limiting slides.

6. The integrated device for boring and milling leg holes of wind turbine installation vessels according to claim 1, characterized in that, The power assembly includes a second limiting slide column, a lifting plate, a second lead screw, and a sixth motor. The second limiting slide column and the sixth motor are both fixedly installed on the top of the lifting platform. The lifting plate is slidably sleeved on the second limiting slide column. The second lead screw is fixedly installed on the output end of the sixth motor. The second lead screw passes through the lifting plate and is threadedly connected to the lifting plate. A connecting plate is fixedly installed at the top of the second limiting slide column. The top of the second lead screw is rotatably connected to the connecting plate. The lifting push rod is rotatably connected to the lifting plate.

7. The integrated device for boring and milling leg holes of wind turbine installation vessels according to claim 6, characterized in that, An air jet box is fixedly installed on the outer wall of the rotating cylinder near its bottom end. The air jet box is located above the movable slide bar. An upper air pipe is slidably installed inside the rotating cylinder, and a flexible hose is fixedly connected to the bottom end of the upper air pipe. A lower air pipe is fixedly installed inside the rotating cylinder, and the bottom end of the flexible hose is fixedly connected to the top end of the lower air pipe. The bottom end of the lower air pipe extends outside the rotating cylinder and is fixedly connected to the top of the air jet box. A convex air box is fixedly installed at the top end of the lifting push rod. A hollow rod is fixedly installed on the lifting plate. The top of the convex air box is rotatably and sealingly connected to the bottom end of the hollow rod. A connecting pipe is fixedly installed at the center of the top end of the hollow rod. An air pump is fixedly installed on the top of the lifting plate. An exhaust pipe is fixedly installed on the air outlet of the air pump. The bottom end of the exhaust pipe is fixedly connected to the top end of the connecting pipe. The top end of the upper air pipe extends above the rotating cylinder and is fixedly connected to the convex air box.

8. The integrated device for boring and milling leg holes of wind turbine installation vessels according to claim 7, characterized in that, The bottom of the jet box has a jet nozzle, which is located directly above the second straight rack.

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