An automatic grinding equipment for bevels of steel plates for wind turbine towers

Abstract

This invention discloses an automatic grinding device for the bevel of steel plates used in wind turbine towers, within the field of grinding equipment. It includes a mobile trolley capable of moving and traveling on the steel plate. A mounting plate is provided on the upper part of the trolley, and a grinding frame is mounted in the middle of the mounting plate. The grinding frame extends outward and is positioned corresponding to the grinding bevel. A liftable upper moving seat and a lower moving seat are respectively mounted on the grinding frame via a guide mechanism. An upper servo motor and a lower servo motor are respectively mounted on the upper and lower moving seats. The output shafts of the upper and lower servo motors pass through corresponding slots and are fitted with flat grinding wheels. A front grinding assembly and a rear grinding assembly are respectively mounted on the mounting plate on the front and rear sides of the grinding frame, corresponding to the upper and lower bevels, respectively. This invention enables automatic movement and grinding on the steel plate, achieving good flatness and smoothness, and higher grinding efficiency.

Description

Technical Field

[0001] This invention belongs to the field of grinding equipment, and specifically relates to an automatic grinding equipment for bevels of steel plates for wind turbine towers. Background Technology

[0002] As the core supporting structure of a wind power generation system, the manufacturing quality of the wind turbine tower directly affects the long-term operational stability and service life of the entire machine. The tower is usually assembled by welding multiple steel plate sections. The machining accuracy and surface quality of the steel plate bevel are key factors in ensuring the welding strength. To ensure the full fusion of the weld and the reliability of the structure during the welding process, the bevel area must be finely ground to thoroughly remove oxide scale, burrs and machining marks, providing a good foundation for high-quality welding.

[0003] Traditional beveling of wind turbine tower steel plates mainly relies on semi-automatic or handheld equipment, typically using grinding wheels, angle grinders, or small milling machines. During operation, auxiliary positioning and feeding are required. The oxide layer, burrs, and unevenness on the bevel surface are removed by rotary grinding or milling. This type of grinding equipment usually first fixes the wind turbine tower steel plate, then mounts the grinding equipment on top of the steel plate. As the grinding equipment advances, it aligns with one bevel on the wind turbine tower steel plate for grinding. After grinding one bevel, the output end is aligned with another bevel on the bottom of the steel plate for grinding again, thus completing the beveling of the wind turbine tower steel plate.

[0004] During the manufacturing process of wind turbine towers, the steel plates of the towers need to undergo fine grinding to ensure a smooth and flawless surface, thereby improving the overall strength and service life of the tower. The aforementioned traditional wind turbine tower steel plate beveling grinding equipment is mainly used for grinding the upper and lower bevels of the wind turbine tower. These devices can grind the upper and lower bevels in a predetermined order. Although such equipment performs well in grinding the upper and lower bevels, the surface of the wind turbine tower does not only include the upper and lower bevels. The upper and lower surfaces of the steel plate edges also need to be ground to ensure their flatness and smoothness. However, traditional bevel grinding equipment is often used to grind specific areas, making it difficult to process multiple surfaces that need grinding simultaneously. This seriously affects the overall grinding efficiency of the tower and increases production time and costs.

[0005] Therefore, the present invention provides an automatic grinding equipment for bevels of steel plates for wind turbine towers. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic grinding equipment for the bevel of steel plates for wind turbine towers. This equipment can automatically move on the steel plate and perform grinding, simultaneously grinding the upper and lower surfaces of the steel plate edges as well as the upper and lower bevels. The grinding results in good flatness and smoothness, and higher grinding efficiency.

[0007] The objective of this invention is achieved as follows: An automatic grinding device for the bevel of steel plates used in wind turbine towers includes a mobile trolley capable of moving and traveling on the steel plate. A grinding bevel is provided on one side of the steel plate. The mobile trolley includes a body, with a mounting plate on the upper part of the body. A grinding frame is mounted in the middle of the mounting plate. The grinding frame extends outward and is correspondingly positioned to the grinding bevel. A liftable upper moving seat and a lower moving seat are respectively mounted on the grinding frame via a guide mechanism. An upper servo motor and a lower servo motor are respectively mounted on the upper and lower moving seats. The grinding machine frame has several through slots corresponding to the upper and lower servo motors. The output shafts of the upper and lower servo motors pass through the corresponding through slots and are equipped with a flat grinding wheel. The flat grinding wheels of the upper and lower servo motors are respectively set on the upper and lower surfaces of the steel plate edge. The front grinding assembly and the rear grinding assembly are respectively installed on the mounting plate on the front and rear sides of the grinding machine frame. The grinding bevel includes an upper bevel and a lower bevel. The front grinding assembly and the rear grinding assembly are respectively set on the upper bevel and the lower bevel.

[0008] In operation, the mobile trolley moves along the steel plate. The output shafts of the upper and lower servo motors pass through the grinding machine frame. The flat grinding wheels on the output shafts of the upper and lower servo motors are respectively positioned to correspond to the upper and lower surfaces of the steel plate. The upper and lower movable seats on the grinding machine frame can be raised and lowered to adjust their positions, thereby adjusting the upper and lower flat grinding wheels to fit closely to the upper and lower surfaces of the steel plate for grinding. At the same time, the first inclined grinding wheel on the front grinding assembly grinds the upper inclined bevel, and the second inclined grinding wheel on the rear grinding assembly grinds the lower inclined bevel. As the mobile trolley moves along the steel plate, the side of the steel plate can be ground.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides an integrated and highly adaptable automatic grinding device for the bevel of steel plates used in wind turbine towers. By integrating the front grinding assembly, the rear grinding assembly, and the centrally located dual grinding wheel system onto the same self-propelled platform, it achieves synchronous and continuous grinding of the steel plate bevel and its upper and lower surfaces, significantly improving overall processing efficiency and avoiding the cumbersome process of multiple positioning and step-by-step operation required by traditional equipment. The device adopts a multi-level adjustable structure, such as the design of the rotating guide rod, linear guide rail, and moving slider in the front and rear grinding assemblies. This allows the position, angle, and pressure of the grinding wheels to be flexibly adjusted according to the steel plate thickness, bevel shape, and surface curvature, enhancing the device's adaptability to workpieces of different specifications and ensuring the uniformity and accuracy of the grinding process. This effectively solves the technical bottlenecks of traditional equipment, such as narrow applicability and inconvenient adjustment.

[0010] 2. The automatic grinding equipment for bevels of steel plates on wind turbine towers of the present invention further ensures grinding quality and equipment stability by introducing a composite vibration reduction system and an autonomous chip removal mechanism. By setting a damper and a combination of compression and tension springs at the lifting guide rail, the vibration and impact generated during the grinding process are effectively absorbed and buffered, reducing uneven grinding and equipment damage caused by vibration, and improving the reliability of long-term operation. At the same time, the output shaft of the servo motor drives the bevel gear transmission fan to form a multi-directional and inclined airflow in the air duct. Combined with the specially designed scraper groove structure on the grinding wheel, the grinding chips are removed and guided in real time, reducing the accumulation of chips that affect the grinding effect and cause secondary pollution. This grinding equipment not only reduces the frequency of manual cleaning, but also ensures the continuous cleanliness of the grinding area, thereby improving the surface quality of the weld bevel and providing a good foundation for subsequent welding processes.

[0011] As a further improvement of the present invention, the mounting plate is arranged horizontally, and a rear mounting part is provided on the side of the mounting plate away from the grinding bevel. A support seat is provided on the mounting plate, and the grinding machine frame is fixed on the support seat. The grinding machine frame is L-shaped and includes a flat plate and a vertical plate. The flat plate is fixed on the support seat, and the edge of the flat plate extends horizontally beyond the edge of the steel plate. The vertical plate is provided corresponding to the grinding bevel.

[0012] As a further improvement of the present invention, the guiding mechanism includes two vertical lifting guide rails arranged parallel to each other on the vertical plate. Each lifting guide rail is equipped with an upper electric slide and a lower electric slide that can move up and down. The upper and lower electric slides are arranged vertically and correspondingly to each other. The upper electric slides on the two lifting guide rails are arranged horizontally and correspondingly to each other. The lower electric slides on the two lifting guide rails are arranged horizontally and correspondingly to each other. The upper moving seat is fixed to the outer side of the two upper electric slides, and the lower moving seat is fixed to the outer side of the two lower electric slides. Two through slots are provided. The through slots are vertical waist-shaped slots. The two through slots are opened vertically and correspondingly in the middle of the vertical plate of the grinding machine frame. The two lifting guide rails are located on the left and right sides of the two through slots respectively. The output shaft of the upper servo motor passes longitudinally through the upper moving seat and then through the corresponding through slot. The output shaft of the lower servo motor passes longitudinally through the lower moving seat and then through the corresponding through slot. The vertical plate of the grinding machine frame is provided with an upper pressure component and a lower tension component corresponding to the upper moving seat and the lower moving seat respectively. The upper and lower electric slides are powered and can rise and fall autonomously on the lifting guide rail. Each upper and lower electric slide can drive the upper and lower moving seats to rise and fall respectively.

[0013] As a further improvement of the present invention, the upper pressure assembly includes an upper fixed support 1 disposed at the upper end of each lifting guide rail, and a vertical upper damper connected to each upper fixed support 1. An L-shaped upper bracket is also fixed to the upper fixed support 1. The upper bracket and the upper damper are staggered front and rear. Two symmetrical L-shaped lower brackets are installed on the upper movable seat. The two lower brackets are respectively arranged one-to-one with the two upper brackets. The horizontal parts of the L-shaped upper brackets and lower brackets extend outward. A vertical guide is provided between the corresponding L-shaped upper brackets and lower brackets. The upper end of the guide rod is fixed to the horizontal part of the upper support, and the lower end of the guide rod passes through the horizontal part of the lower support and is movably connected to it. A compression spring is sleeved on the outer periphery of the guide rod, and the upper and lower ends of the compression spring elastically abut against the horizontal parts of the upper and lower supports, respectively. Each of the upper and lower ends of the guide rod has a radial anti-disengagement positioning pin. A downwardly extending lower movable support is fixed on the vertical part of the lower support. Two lower movable supports are respectively set with two upper dampers, and the lower end of the upper damper is connected to the corresponding lower movable support. When the upper movable support descends to the upper flat grinding wheel and contacts the upper surface of the steel plate, the compression spring presses the lower support, thereby causing the flat grinding wheel on the upper movable support to press against the upper surface of the steel plate. The guide rod guides the lifting and lowering movement of the lower support, and the upper dampers provide damping when the upper movable support moves.

[0014] As a further improvement of the present invention, the pull-down force assembly includes an upper fixed support II disposed on each lifting guide rail. The upper fixed support II is vertically located below the upper electric slide. Each upper fixed support II is provided with a horizontal upper mounting pin. The lower moving seat is provided with two symmetrically distributed lower moving supports II corresponding to the two upper fixed supports II. Each lower moving support II is provided with a horizontal lower mounting pin. The two upper mounting pins are respectively provided with two lower mounting pins. A parallel lower damper and a tension spring I are provided between the corresponding upper and lower mounting pins. The upper and lower ends of the lower damper are respectively connected to the corresponding upper and lower mounting pins. The lower end of the lifting guide rail is provided with a fixed limiting block. When the lower moving seat rises and moves to the contact point between the lower flat grinding wheel and the lower surface of the steel plate, the tension spring I tightens the lower moving support II, thereby causing the flat grinding wheel on the lower moving seat to press against the lower surface of the steel plate. The lower damper provides damping for the movement of the lower moving seat.

[0015] As a further improvement of the present invention, the front grinding assembly includes a front support mounted on a mounting plate, the front support being located in front of the support base. A front ear seat is mounted on the front support, and a rotating frame is rotatably connected to the front ear seat via a pin shaft. A linear guide rail is mounted on the rotating frame, and a movable slider is movably connected to the linear guide rail. Mounting brackets and vertical limiting plates are respectively provided at the upper and lower ends of the rotating frame. Arc-shaped guide grooves are provided on both the left and right side plates of the front ear seat. Guide blocks are provided on both the left and right sides of the rotating frame, with the two guide blocks respectively fitting into the two guide grooves. A guide rod is fixed on the L-shaped mounting bracket, the guide rod being parallel to the length direction of the linear guide rail. An outer step is provided at the upper end of the guide rod, and a compression spring is sleeved on the outer periphery of the guide rod. A mounting bracket is fixed on the movable slider. The system is equipped with a rotating guide rod, which is perpendicular to the length direction of the linear guide rail. An L-shaped connecting bracket is fixed on the movable slider. The connecting bracket has a guide hole that allows the guide rod to pass through. The connecting bracket is movably connected to the guide rod. One end of the guide rod passing through the connecting bracket is radially provided with an anti-disengagement positioning pin. The upper and lower ends of the compression spring are elastically abutting against the outer step and the connecting bracket, respectively. A movable outer frame is movably connected to the rotating guide rod. The movable outer frame is fitted onto the rotating guide rod. Several clamping bolts are threaded onto the movable outer frame. The clamping bolts pass through the movable outer frame and clamp the rotating guide rod. A servo motor is mounted on the movable outer frame via a motor bracket. A slanted grinding wheel is mounted on the output end of the servo motor. The slanted grinding wheel is set with an upper inclined bevel. The rotating bracket on the front ear seat rotates to adjust the position of the rotating guide rod. The sliding block on the linear guide rail linearly adjusts the position of the rotating guide rod. After loosening the clamping bolt, the outer frame moves along the rotating guide rod to adjust its position. Under the action of the compression spring, the inclined grinding wheel on the servo motor presses against the upper inclined bevel for grinding. In order to lock and position the rotating bracket after it rotates to the correct position, a side positioning screw with a laterally protruding guide groove is provided on the guide block. A positioning nut is threaded onto the side positioning screw. The positioning nut presses against the outer side of the front ear seat to achieve locking and positioning.

[0016] As a further improvement of the present invention, the rear grinding assembly includes a rear support mounted on a mounting plate, the rear support being located behind the support base. A rear ear seat is provided on the rear support, and a rotating frame two is rotatably connected to the rear ear seat via a pin. The rear ear seat has the same structure as the front ear seat. A linear guide rail two is provided on the rotating frame two, and a movable slider two is movably connected to the linear guide rail two. An L-shaped rotating guide rod two is mounted on the movable slider two. A limiting plate two is vertically provided at the lower end of the rotating frame two. A U-shaped mounting bracket one is provided on the movable slider two, and two mounting holes one are provided on the mounting bracket one. The upper end of the linear guide rail two is fixed with the U-shaped mounting bracket. Second, the mounting bracket 2 has two mounting holes 2, which are respectively set to correspond to the two mounting holes 1. A tension spring 2 is provided between each corresponding mounting hole 2 and mounting hole 1. A movable frame is also movably connected to the rotating guide rod 2. The movable frame is fitted on the parallel section of the L-shaped rotating guide rod 2. The parallel section of the rotating guide rod 2 is parallel to the linear guide rail 2. Several clamping bolts 2 are threaded on the movable frame. The clamping bolts 2 pass through the movable frame and clamp the rotating guide rod 2. A servo motor 2 is installed on the movable frame via a motor bracket 2. A slanted grinding wheel 2 is installed at the output end of the servo motor 2. The slanted grinding wheel 2 is set to correspond to the lower slanted bevel. The rotating frame on the rear ear seat rotates to adjust the position of the rotating guide rod. The sliding block on the linear guide rail adjusts the position of the rotating guide rod. After loosening the clamping bolt, the moving frame moves along the rotating guide rod to adjust its position. Under the action of the tension spring, the inclined grinding wheel on the servo motor presses against the lower inclined bevel for grinding. The rear ear seat has the same structure as the front ear seat. After the rotating frame rotates to its position, it can also be locked and positioned.

[0017] As a further improvement of the present invention, the mounting plate is provided with a fixed seat 1, and a fixed block 1 is provided on the fixed seat 1. The fixed block 1 has a sliding hole 1, and a longitudinal sliding rod 1 is fitted through the sliding hole 1 and movably connected thereto. A vertical clamping bolt 3 with a handle is threadedly connected to the fixed block 1. A fixed block 2 is provided at the front end of the sliding rod 1, and a sliding hole 2 is provided on the fixed block 2. The vertical sliding rod 2 is fitted through the sliding hole 2 and movably connected thereto. A transverse clamping bolt 4 with a handle is threadedly connected to the fixed block 2. A guide wheel is provided at the lower end of the sliding rod 2, and the guide wheel is set corresponding to one edge of the steel plate. After loosening the clamping bolt 3, the longitudinal position of the sliding rod 1 is adjusted. After loosening the clamping bolt 4, the vertical position of the sliding rod 2 is adjusted. The guide wheel moves along the edge of the steel plate to be ground, thus playing a guiding role.

[0018] As a further improvement of the present invention, a second fixed seat is provided on the rear mounting part, and a longitudinal limiting rod is installed on the second fixed seat. A limiting plate is slidably connected to the limiting rod, and a limiting frame is connected to the limiting plate. The limiting frame is gate-shaped and is correspondingly arranged with the limiting rod. A transverse clamping bolt five is threadedly connected to the limiting frame. The clamping bolt five passes through the limiting frame and clamps the limiting rod. The limiting plate is arranged corresponding to the steel plate. Both the limiting plate and the limiting frame are movably connected to the limiting rod. After loosening the clamping bolt five, the positions of the limiting plate and the limiting frame can be linearly adjusted. The limiting plate can prevent the moving trolley from falling off the steel plate.

[0019] As a further improvement of the present invention, the output ends of both the servo motor one and the servo motor two are provided with a first bevel gear. One side of each of the servo motor one and the servo motor two is fixedly connected to a duct. The duct includes an L-shaped connecting section, an end section, and a side section. The side section and the L-shaped connecting section are respectively provided on the left and right sides of the first or second inclined grinding wheel. The end section is provided on the front end of the first or second inclined grinding wheel. A support frame is fixedly connected inside the L-shaped connecting section of the duct. A rotating rod is rotatably connected to the middle of the support frame. The rotating rod is perpendicular to the axis of the first or second servo motor. One end of the rotating rod extends out of the duct and is fixedly connected to a second bevel gear. The second bevel gear meshes with the first bevel gear. Several fans are fixedly connected to the rotating rod, and the fans are located inside the duct. Multiple first air holes are opened on the L-shaped connecting section of the duct, and each first air hole is inclined. Servo motor one and servo motor two drive the corresponding oblique grinding wheels to rotate. At the same time, two bevel gears mesh and drive the rotating rod to rotate. The fan rotates and blows air along the air duct from the No. 1 air hole onto the steel plate to blow away the particulate impurities generated during the grinding process.

[0020] As a further improvement of the present invention, the side section of the air duct is provided with multiple No. 2 air holes, and each No. 2 air hole is inclined; the end section of the air duct is provided with several No. 3 air holes, and several air guide plates are provided on the air duct corresponding to each No. 3 air hole. Each No. 1, No. 2, and No. 3 air hole is set to the grinding bevel of the steel plate. The fan blows air along the air duct from the No. 2 and No. 3 air holes onto the steel plate to blow away particulate impurities generated during the grinding process. The air guide plates can guide the air; the No. 1, No. 2, and No. 3 air holes blow air towards the front end and left and right sides of the grinding wheel to achieve all-round removal of impurity particles.

[0021] As a further improvement of the present invention, both the first and second inclined grinding wheels are provided with multiple scraper grooves spaced apart circumferentially. One side of each scraper groove is shaped like a scraper blade, and the other side is shaped like a double slope. The scraper grooves can scrape away larger impurity particles generated during the grinding process.

[0022] As a further improvement of the present invention, an annular groove is formed on the outer periphery of the guide wheel, and the cross-sectional shape of the annular groove is triangular. The annular groove matches the side of the steel plate, resulting in better guiding effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 4 This is a three-dimensional structural view of the back of the grinding machine frame of the present invention.

[0027] Figure 5 This is a three-dimensional view of the back of the present invention.

[0028] Figure 6 This is a 3D structural diagram of the mobile vehicle.

[0029] Figure 7 This is a three-dimensional structural diagram of the grinding machine frame.

[0030] Figure 8 This is a three-dimensional structural diagram of the grinding machine frame.

[0031] Figure 9 This is a side view of the grinding machine frame.

[0032] Figure 10 yes Figure 9 A magnified view of a portion of the image.

[0033] Figure 11 This is the front view of the grinding machine frame.

[0034] Figure 12 This is a schematic diagram of the back structure of the grinding machine frame.

[0035] Figure 13 This is a schematic diagram of the front grinding assembly.

[0036] Figure 14 This is a schematic diagram of the post-grinding assembly.

[0037] Figure 15 This is a schematic diagram of the duct structure of the present invention.

[0038] Figure 16 This is a schematic diagram of the structure of each bevel gear of the present invention.

[0039] Figure 17 This is a schematic diagram of the structure of each air hole in the present invention.

[0040] Figure 18 This is an enlarged view of the side of the steel plate.

[0041] Among them, 1 is a steel plate, 2 is a moving trolley, 2a is the trolley body, 2b is the mounting plate, 2b1 is the rear mounting part, 3 is the grinding bevel, 3a is the upper inclined bevel, 3b is the lower inclined bevel, 4 is the grinding machine frame, 4a is the flat plate, 4b is the vertical plate, 5 is the upper moving seat, 6 is the lower moving seat, 7 is the upper servo motor, 8 is the lower servo motor, 9 is the through groove, 10 is the flat grinding wheel, 11 is the support seat, 12 is the lifting guide rail, 13 is the upper electric slide, 14 is the lower electric slide, 15 is the upper fixed support, 15a is the upper bracket, 16 is the upper damper, 17 is the lower bracket, 18 is the guide rod, 19 is the pressure 20. Spring 1, 21. Lower movable support 1, 22. Upper fixed support 2, 23. Upper mounting pin, 24. Lower movable support 2, 25. Lower mounting pin, 26. Lower damper, 27. Tension spring 1, 28. Fixed limit block, 29. Front support, 20. Front ear seat, 29a. Side plate, 30. Pin, 31. Rotary frame 1, 31a. Limiting plate 1, 32. Linear guide rail 1, 33. Moving slider 1, 34. Mounting bracket, 35. Guide groove, 36. Guide block, 37. Guide rod 2, 37a. Outer step, 38. Compression spring 2, 39. Rotating guide rod 1, 40. Connecting bracket, 4 1. Moving outer frame, 42. Clamping bolt 1, 43. Motor bracket 1, 44. Servo motor 1, 45. Angled grinding wheel 1, 46. Rear support, 47. Rear ear seat, 48. Rotating frame 2, 48a. Limiting plate 2, 49. Linear guide rail 2, 50. Moving slider 2, 51. Rotating guide rod 2, 52. Mounting bracket 1, 52a. Mounting hole 1, 53. Mounting bracket 2, 53a. Mounting hole 2, 54. Moving frame, 55. Clamping bolt 2, 56. Motor bracket 2, 57. Servo motor 2, 57a. Angled grinding wheel 2, 58. Fixed seat 1, 59. Fixed block 1, 6. 0. Slide rod one, 61. Clamping bolt three, 62. Fixing block two, 63. Slide rod two, 64. Clamping bolt four, 65. Guide wheel, 66. Fixing seat two, 67. Limiting rod, 68. Limiting disc, 69. Limiting frame, 70. Clamping bolt five, 71. Bevel gear one, 72. Air duct, 72a. Connecting section, 72b. End section, 72c. Side section, 73. Support frame, 74. Rotating rod, 75. Bevel gear two, 76. Fan, 77. Air hole one, 78. Air hole two, 79. Air hole three, 80. Air guide plate, 81. Scraper groove, 82. Controller, 83. Tension spring two. Detailed Implementation

[0042] like Figure 1-18As shown, an automatic grinding device for bevels of steel plates used in wind turbine towers includes a mobile trolley 2 that can move on a steel plate 1. A grinding bevel 3 is provided on one side of the steel plate 1. The mobile trolley 2 includes a body 2a, with a mounting plate 2b on the upper part of the body 2a. A grinding frame 4 is mounted in the middle of the mounting plate 2b. The grinding frame 4 extends outward and is correspondingly positioned to the grinding bevel 3. A liftable upper moving seat 5 and a lower moving seat 6 are respectively mounted on the grinding frame 4 via a guide mechanism. An upper servo motor 7 and a lower servo motor 8 are respectively mounted on the upper moving seat 5 and the lower moving seat 6. The grinding machine... The frame 4 has several through slots 9 corresponding to the upper servo motor 7 and the lower servo motor 8. The output shafts of the upper servo motor 7 and the lower servo motor 8 pass through the corresponding through slots 9 and are equipped with a flat grinding wheel 10. The flat grinding wheels 10 of the upper servo motor 7 and the lower servo motor 8 are respectively set on the upper and lower surfaces of the edge of the steel plate 1. The mounting plate 2b is equipped with a front grinding assembly and a rear grinding assembly on the front and rear sides of the grinding machine frame 4, respectively. The grinding bevel 3 includes an upper inclined bevel 3a and a lower inclined bevel 3b. The front grinding assembly and the rear grinding assembly are respectively set for the upper inclined bevel 3a and the lower inclined bevel 3b.

[0043] The mounting plate 2b is arranged horizontally, and a rear mounting part 2b1 is provided on the side of the mounting plate 2b away from the grinding bevel 3. A support base 11 is provided on the mounting plate 2b, and the grinding machine frame 4 is fixed on the support base 11. The grinding machine frame 4 is L-shaped and includes a flat plate 4a and a vertical plate 4b. The flat plate 4a is fixed on the support base 11, and the edge of the flat plate 4a extends horizontally beyond the edge of the steel plate 1. The vertical plate 4b is correspondingly arranged with respect to the grinding bevel 3. A controller 82 is provided on the grinding machine frame 4, and the controller 82 contains an electrical control system.

[0044] The mounting plate 2b is provided with a fixing seat 58, and a fixing block 59 is provided on the fixing seat 58. The fixing block 59 has a sliding hole 1. A longitudinal sliding rod 60 passes through the sliding hole 1 and is movably connected to it. A vertical clamping bolt 61 with a handle is threadedly connected to the fixing block 59. The front end of the sliding rod 60 is provided with a fixing block 62. The fixing block 62 has a sliding hole 2. A vertical sliding rod 63 passes through the sliding hole 2 and is movably connected to it. A transverse clamping bolt 64 with a handle is threadedly connected to the fixing block 62. The lower end of the sliding rod 63 is provided with a guide wheel 65, which is set on one side edge of the steel plate 1. After loosening the clamping bolt 61, the sliding rod 60 is adjusted longitudinally. After loosening the clamping bolt 64, the sliding rod 63 is adjusted vertically. The guide wheel 65 moves along the edge of the steel plate 1 to be ground, playing a guiding role.

[0045] The rear mounting part 2b1 is provided with a fixed seat 66, on which a longitudinal limiting rod 67 is installed. A limiting plate 68 is slidably connected to the limiting rod 67, and a limiting frame 69 is connected to the limiting plate 68. The limiting frame 69 is gate-shaped and is correspondingly set to the limiting rod 67. A transverse clamping bolt 70 is threadedly connected to the limiting frame 69. The clamping bolt 70 passes through the limiting frame 69 and clamps the limiting rod 67. The limiting plate 68 is set to correspond to the steel plate 1. Both the limiting plate 68 and the limiting frame 69 are movably connected to the limiting rod 67. After loosening the clamping bolt 70, the positions of the limiting plate 68 and the limiting frame 69 can be linearly adjusted. The limiting plate 68 can prevent the moving trolley 2 from falling off the steel plate 1.

[0046] The guiding mechanism includes two parallel vertical lifting guide rails 12 arranged on the vertical plate 4b. Each lifting guide rail 12 is equipped with an upper electric slide 13 and a lower electric slide 14 that can move up and down. The upper electric slides 13 and lower electric slides 14 are arranged vertically and vertically corresponding to each other. The upper electric slides 13 on the two lifting guide rails 12 are arranged horizontally and horizontally corresponding to each other. The upper moving seat 5 is fixed to the outer side of the two upper electric slides 13, and the lower moving seat 6 is fixed to the outer side of the two lower electric slides 14. Two vertical, waist-shaped slots 9 are provided, spaced vertically at the center of the vertical plate 4b of the grinding machine frame 4. Two lifting guide rails 12 are located on the left and right sides of the two slots 9 respectively. The output shaft of the upper servo motor 7 passes longitudinally through the upper moving seat 5 and then through the corresponding slot 9, and the output shaft of the lower servo motor 8 passes longitudinally through the lower moving seat 6 and then through the corresponding slot 9. An upper pressure component and a lower tension component are respectively provided on the vertical plate 4b of the grinding machine frame 4 corresponding to the upper moving seat 5 and the lower moving seat 6. The upper electric slide 13 and the lower electric slide 14 are powered and can move up and down autonomously on the lifting guide rails 12. Each upper electric slide 13 and lower electric slide 14 can drive the upper moving seat 5 and the lower moving seat 6 to move up and down respectively.

[0047] The upper pressure assembly includes an upper fixed support 15 disposed at the upper end of each lifting guide rail 12. Each upper fixed support 15 is connected to a vertical upper damper 16. An L-shaped upper bracket 15a is also fixed to the upper fixed support 15. The upper bracket 15a and the upper damper 16 are staggered. Two symmetrical L-shaped lower brackets 17 are installed on the upper movable seat 5. The two lower brackets 17 are respectively arranged one-to-one with the two upper brackets 15a. The horizontal parts of the L-shaped upper brackets 15a and lower brackets 17 extend outward. A vertical guide rod 18 is provided between the corresponding upper and lower L-shaped upper brackets 15a and lower brackets 17. The upper end of the guide rod 18 is fixed to the horizontal part of the upper bracket 15a, and the lower end of the guide rod 18 passes through the horizontal part of the lower bracket 17 and is movably connected to it. A compression spring 19 is sleeved on the outer periphery of the guide rod 18. The upper and lower ends of the compression spring 19 elastically abut against the horizontal parts of the upper bracket 15a and the lower bracket 17, respectively. A locating pin is radially provided at both the upper and lower ends of the guide rod 18. An outwardly extending lower movable support 20 is fixed on the vertical part of the lower bracket 17. The two lower movable supports 20 are respectively provided with two upper dampers 16. The lower end of the upper damper 16 is connected to the corresponding lower movable support 20. When the upper movable seat 5 moves down to the upper flat grinding wheel 10 and contacts the upper surface of the steel plate 1, the compression spring 19 presses the lower bracket 17, so that the flat grinding wheel 10 on the upper movable seat 5 presses the upper surface of the steel plate 1. The guide rod 18 guides the lifting and lowering movement of the lower bracket 17, and the upper damper 16 provides damping when the upper movable seat 5 moves.

[0048] The pull-down force assembly includes an upper fixed support 21 mounted on each lifting guide rail 12. The upper fixed support 21 is vertically located below the upper electric slide 13. Each upper fixed support 21 is provided with a horizontal upper mounting pin 22. The lower moving seat 6 is provided with two lower moving supports 23 symmetrically distributed on the left and right sides corresponding to the two upper fixed supports 21. Each lower moving support 23 is provided with a horizontal lower mounting pin 24. The two upper mounting pins 22 are respectively provided with the two lower mounting pins 24. A parallel lower damper 25 and a tension spring 26 are provided between the corresponding upper mounting pins 22 and lower mounting pins 24. The upper and lower ends of the lower damper 25 are respectively connected to the corresponding upper mounting pins 22 and lower mounting pins 24. The lower end of the lifting guide rail 12 is provided with a fixed limiting block 27. When the lower moving seat 6 rises and moves to the lower surface of the steel plate 1, the tension spring 26 tightens the lower moving support 23, so that the flat grinding wheel 10 on the lower moving seat 6 presses against the lower surface of the steel plate 1, and the lower damper 25 provides damping when the lower moving seat 6 moves.

[0049] The front grinding assembly includes a front support 28 mounted on a mounting plate 2b, located in front of the support base 11. A front ear seat 29 is mounted on the front support 28, and a rotating frame 31 is rotatably connected to the front ear seat 29 via a pin 30. A linear guide rail 32 is mounted on the rotating frame 31, and a movable slider 33 is movably connected to the linear guide rail 32. Mounting brackets 34 and vertical limiting plates 31a are respectively provided at the upper and lower ends of the rotating frame 31. The front ear... Arc-shaped guide grooves 35 are provided on both the left and right side plates 29a of the base 29. Guide blocks 36 are provided on both the left and right sides of the rotating frame 31. The two guide blocks 36 are respectively inserted into the two guide grooves 35. A guide rod 37 is fixed on the L-shaped mounting bracket 34. The guide rod 37 is parallel to the length direction of the linear guide rail 32. The upper end of the guide rod 37 is provided with an outer step 37a. A compression spring 38 is sleeved on the outer periphery of the guide rod 37. A rotating guide rod 39 is fixedly installed on the movable slider 33. The rotating guide rod 39 is perpendicular to the length direction of the linear guide rail 32. An L-shaped connecting bracket 40 is also fixed on the movable slider 33. The connecting bracket 40 is provided with a guide hole that allows the guide rod 37 to pass through. The connecting bracket 40 is movably connected to the guide rod 37. The end of the guide rod 37 that passes through the connecting bracket 40 is provided with an anti-disengagement positioning pin. The upper and lower ends of the compression spring 38 elastically abut against the outer step 37a and the connecting bracket 40, respectively. A movable outer frame 41 is movably connected to the rotating guide rod 39. The movable outer frame 41 is fitted onto the rotating guide rod 39. Several clamping bolts 42 are threaded onto the movable outer frame 41. The clamping bolts 42 pass through the movable outer frame 41 and clamp the rotating guide rod 39. A servo motor 44 is mounted on the movable outer frame 41 via a motor bracket 43. A slanted grinding wheel 45 is mounted on the output end of the servo motor 44. The slanted grinding wheel 45 is set corresponding to the bevel 3a on the upper slope. The rotating bracket 31 on the front ear seat 29 rotates to adjust the position of the rotating guide rod 39. The moving slider 33 on the linear guide rail 32 linearly adjusts the position of the rotating guide rod 39. After loosening the clamping bolt 42, the moving outer frame 41 moves along the rotating guide rod 39 to adjust its position. Under the action of the compression spring 38, the inclined grinding wheel 45 on the servo motor 44 presses against the upper inclined bevel 3a for grinding. In order to lock the rotating bracket 31 after it rotates into place, a side positioning screw with a lateral extension of the guide groove 35 is provided on the guide block 36. A positioning nut is threaded on the side positioning screw. The positioning nut presses against the outside of the front ear seat 29 to achieve locking and positioning.

[0050] The rear grinding assembly includes a rear support 46 mounted on the mounting plate 2b, located behind the support base 11. A rear ear seat 47 is mounted on the rear support 46, and a rotating frame 48 is rotatably connected to the rear ear seat 47 via a pin 30. The rear ear seat 47 has the same structure as the front ear seat 29. A linear guide rail 49 is mounted on the rotating frame 48, and a movable slider 50 is movably connected to the linear guide rail 49. An L-shaped rotating guide rod 51 is mounted on the movable slider 50. A limiting plate 48a is vertically provided at the lower end of the rotating frame 48. A U-shaped mounting bracket 52 is mounted on the movable slider 50, with two mounting holes 52a. A U-shaped mounting bracket 53 is fixed to the upper end of the linear guide rail 49. Two mounting holes 53a are provided on the upper part, which correspond to two mounting holes 52a respectively. A tension spring 83 is provided between each corresponding mounting hole 53a and mounting hole 52a. A movable frame 54 is also movably connected to the rotating guide rod 51. The movable frame 54 is fitted on the parallel section of the L-shaped rotating guide rod 51. The parallel section of the rotating guide rod 51 is parallel to the linear guide rail 49. Several clamping bolts 55 are threaded on the movable frame 54. The clamping bolts 55 pass through the movable frame 54 and clamp the rotating guide rod 51. A servo motor 57 is installed on the movable frame 54 via a motor bracket 56. An inclined grinding wheel 57a is installed at the output end of the servo motor 57. The inclined grinding wheel 57a is set corresponding to the lower inclined bevel 3b. The rotating bracket 48 on the rear ear seat 47 rotates to adjust the position of the rotating guide rod 51. The sliding slider 50 on the linear guide rail 49 linearly adjusts the position of the rotating guide rod 51. After loosening the clamping bolt 55, the moving frame 54 moves along the rotating guide rod 51 to adjust its position. Under the action of the tension spring 83, the inclined grinding wheel 57a on the servo motor 57 presses against the lower inclined bevel 3b for grinding. The rear ear seat 47 has the same structure as the front ear seat 29. The rotating bracket 48 can also be locked and positioned after rotating into place.

[0051] The output ends of both the first servo motor 44 and the second servo motor 57 are equipped with a first bevel gear 71. A duct 72 is fixedly connected to one side of each of the first servo motor 44 and the second servo motor 57. The duct 72 includes an L-shaped connecting section 72a, an end section 72b, and a side section 72c. The side section 72c and the L-shaped connecting section 72a are respectively positioned on the left and right sides of the first or second oblique grinding wheel 45 or the second oblique grinding wheel 57a. The end section 72b is positioned at the front end of the first or second oblique grinding wheel 45 or the second oblique grinding wheel 57a. The L-shaped connecting section of the duct 72... A support frame 73 is fixedly connected inside 72a. A rotating rod 74 is rotatably connected to the middle of the support frame 73. The rotating rod 74 is perpendicular to the axis of either servo motor 44 or servo motor 57. One end of the rotating rod 74 extends out of the air duct 72 and is fixedly connected to a second bevel gear 75. The second bevel gear 75 meshes with the first bevel gear 71. Several fans 76 are fixedly connected to the rotating rod 74 and are located inside the air duct 72. Multiple first air holes 77 are opened on the L-shaped connecting section 72a of the air duct 72, and each first air hole 77 is inclined. While the servo motor 44 and servo motor 57 drive the corresponding inclined grinding wheel to rotate, the two bevel gears mesh and drive the rotating rod 74 to rotate. The fans 76 rotate and blow air along the air duct 72 from the first air holes 77 onto the steel plate 1, blowing away the particulate impurities generated during the grinding process.

[0052] The side section 72c of the air duct 72 has multiple second air holes 78, each of which is inclined. The end section 72b of the air duct 72 has several third air holes 79. Several air guide plates 80 are provided on the air duct 72 corresponding to each third air hole 79. Each first air hole 77, second air hole 78, and third air hole 79 is provided corresponding to the grinding bevel 3 of the steel plate 1. The fan 76 blows air along the air duct 72 from the second air holes 78 and third air holes 79 onto the steel plate 1 to remove particulate impurities generated during the grinding process. The air guide plates 80 can guide the air. The first air holes 77, second air holes 78, and third air holes 79 blow air onto the front end and left and right sides of the grinding wheel to achieve all-round removal of impurity particles.

[0053] Both the first slanted grinding wheel 45 and the second slanted grinding wheel 57a have multiple scraper grooves 81 spaced apart circumferentially. One side of each scraper groove 81 is shaped like a scraper blade, and the other side is shaped like a double slope. The scraper grooves 81 can scrape away larger impurity particles generated during the grinding process.

[0054] The guide wheel 65 has an annular groove on its outer circumference, and the cross-sectional shape of the annular groove is triangular. The annular groove matches the side of the steel plate 1, resulting in better guiding effect.

[0055] The wind turbine tower is the core support structure of the wind turbine generator set. It is usually made by rolling multiple large steel plates into cylindrical sections and then welding them together. These tower steel plates are mostly high-strength thick steel plates, characterized by large size, high thickness and strict precision requirements. The processing quality directly determines the overall strength, stability and service life of the tower. During the manufacturing process, the ends of the steel plates need to be beveled in a specific shape to achieve full fusion and reliable connection during welding.

[0056] This invention can simultaneously grind and polish the upper and lower surfaces of the steel plate 1 as well as the upper and lower bevels.

[0057] The front grinding assembly and the rear grinding assembly are used to grind the upper and lower bevels 3b of the wind turbine tower steel plate 1, respectively. When automatically grinding the bevel of the wind turbine tower steel plate 1, the vehicle body 2a drives the grinding equipment to move by itself. The grinding frame 4 serves as the assembly support for the upper and lower surface grinding components. The grinding frame 4 is fixed at the center of the moving trolley 2. The front grinding assembly is located at the front end of the grinding frame 4 and is aligned with the upper bevel of the wind turbine tower steel plate 1, while the rear grinding assembly is located at the rear end of the grinding frame 4 and is aligned with the lower bevel of the wind turbine tower steel plate 1.

[0058] As the vehicle body 2a moves, the front grinding assembly aligns with the upper slope of the wind turbine tower steel plate 1 for grinding. The two electric slides slide on their own, so that the two flat grinding wheels 10 are in contact with the upper and lower surfaces of the wind turbine tower steel plate 1. The servo motor drives the two flat grinding wheels 10 to grind the upper and lower surfaces of the steel plate 1. The rear grinding assembly aligns with the lower slope of the wind turbine tower steel plate 1 for grinding, achieving the effect of grinding multiple parts of the steel plate 1 at the same time. This replaces the traditional grinding equipment that grinds the upper and lower slopes in a predetermined order, improving grinding efficiency and reducing grinding time. Meanwhile, when grinding the bevel of wind turbine tower steel plates 1 of different thicknesses, the two electric slides can adaptively slide and adjust according to the different thicknesses of the wind turbine tower steel plates 1, so that the two flat grinding wheels 10 can fit against the upper and lower surfaces of the wind turbine tower steel plates 1, ensuring that steel plates 1 of different thicknesses can be ground evenly and effectively, further enhancing the adaptability and flexibility of the equipment.

[0059] The slanted grinding wheel 45 of servo motor 44 is aligned with the upper slanted bevel 3a of the wind turbine tower steel plate 1. Both servo motor 44 and servo motor 57 adopt frequency conversion speed regulation design, which can adjust the speed according to the bevel material and grinding requirements to adapt to the grinding intensity of steel plates 1 with different thicknesses. As the vehicle body 2a moves, it grinds the upper slanted bevel 3a of the wind turbine tower steel plate 1. At the same time, the position and angle of servo motor 44 and slanted grinding wheel 45 can be flexibly adjusted to adapt to the grinding requirements of upper slanted bevel 3a with different shapes and angles. The sliding of the moving outer frame 41 on the rotating guide rod 39 further fine-tunes the contact position between the slanted grinding wheel 45 and the upper slanted bevel 3a to ensure the accuracy of grinding. This multi-dimensional adjustable design enables the front grinding component to complete the grinding work of the upper slanted bevel 3a of the wind turbine tower steel plate 1 efficiently and accurately.

[0060] The servo motor 257's angled grinding wheel 257a is aligned with the lower slope bevel 3b of the wind turbine tower steel plate 1. As the vehicle body 2a moves, it grinds the lower slope bevel 3b of the wind turbine tower steel plate 1. At the same time, the position and angle of the servo motor 257 and the angled grinding wheel 257a can be flexibly adjusted to adapt to the grinding requirements of the lower slope bevel 3b with different shapes and angles. The sliding of the moving frame 54 on the rotating guide rod 251 further fine-tunes the contact position between the angled grinding wheel 257a and the lower slope bevel 3b, ensuring the accuracy of grinding. This multi-dimensional adjustable design enables the rear grinding assembly to efficiently and accurately complete the grinding work of the lower slope bevel 3b of the wind turbine tower steel plate 1.

[0061] The grinding machine frame 4 is equipped with multiple sets of dampers, compression springs, and tension springs. The dampers, in combination with the tension springs and the dampers, in combination with the compression springs, can reduce the vibration during the grinding process, effectively absorb the impact force generated during grinding, reduce uneven grinding caused by vibration and equipment damage, thereby improving grinding quality and extending the service life of the equipment. The combination design of multiple sets of dampers with tension springs and compression springs can also automatically adjust the buffering force according to different grinding pressures and steel plate thickness 1, ensuring a stable shock absorption effect under various working conditions.

[0062] Slide rod 1 (60) and slide rod 2 (63) can be adjusted longitudinally and vertically to ensure that the guide wheel 65 at the bottom of slide rod 2 (63) can accurately fit against one side of the wind turbine tower steel plate 1. As the vehicle body 2a moves at a constant speed, the guide wheel 65 can rotate to limit and guide on one side of the wind turbine tower steel plate 1, ensuring the straightness and stability of the grinding equipment during movement, reducing uneven grinding and grinding omissions caused by equipment deviation. At the same time, the rotation design of the guide wheel 65 allows it to adapt to the side of the wind turbine tower steel plate 1 with different curvatures, providing a flexible limiting and guiding function. The clamping bolts 3 (61) and 4 (64) not only play a role in positioning and locking, but their threaded design also facilitates quick adjustment and fixing, improving operating efficiency and reducing equipment debugging time.

[0063] Based on the width of the steel plate 1 being processed, the position of the limiting plate 68 is adaptively adjusted so that the limiting plate 68 corresponds to the side of the steel plate 1 away from the guide wheel 65, ensuring that the limiting plate 68 always corresponds to the other edge of the steel plate 1, forming a bidirectional limiting structure together with the guide wheel 65. This symmetrical guiding design can effectively reduce the probability of equipment deviation and vibration during long-distance movement. When processing steel plates 1 of different widths, the operator only needs to loosen the clamping bolt 70 to quickly slide the limiting plate 68 to the target position and lock it again, making the operation convenient and fast.

[0064] When multiple grinding wheels grind multiple surfaces of the wind turbine tower steel plate 1, grinding easily generates a large amount of debris. Multiple air ducts 72 are fixed to servo motor 44 and servo motor 57 respectively. Through bevel gear transmission, air is blown into the air ducts 72 via a fan 76. The air is then blown out from multiple angled No. 1 air holes 77, removing debris from the grinding area at the bottom of the grinding wheels. The simultaneous operation of multiple air ducts 72 creates multiple airflows, effectively removing debris from different locations and preventing debris accumulation that could affect grinding quality. Simultaneously, the angled design of the No. 1 air hole 77 makes the airflow more concentrated, accurately blowing debris away from the grinding area and ensuring that the grinding wheels maintain clean contact with the surface of the steel plate 1, further improving grinding accuracy. To further enhance cleanliness, the fan 76 can reverse to draw in debris particles through the air holes into the air ducts 72, making the process cleaner and safer.

[0065] The air duct 72 has multiple second-level air holes 78, which are inclined. The air duct 72 also has multiple third-level air holes 79. The second-level air holes 78 are inclined on the air duct 72 and located at the front end of the grinding wheel. Multiple first-level air holes 77 are located at the rear end of the grinding wheel. The third-level air holes 79 are divided into two groups: one group is located between the second-level air holes 78 and the grinding wheel, and the other group is located between the first-level air holes 77 and the grinding wheel. Two air guide plates 80 are fixed to the two groups of third-level air holes 79 to block the airflow. This allows air to enter the air duct 72 and exit from the first-level air holes 77, third-level air holes 79, and second-level air holes 78, respectively. Airflow from the first-level air hole 77... The inclined airflow is used to clean the debris at the bottom of the grinding wheel, while the airflow from the two sets of No. 3 air holes 79 is used to blow away the remaining debris from the steel plate 1 directly. The inclined airflow from the No. 2 air hole 78 is used to clean the impurities and remaining debris at the front end of the grinding wheel. This multi-directional airflow design can form a three-dimensional debris cleaning mechanism, ensuring that the debris and impurities generated during the grinding process are completely and thoroughly removed, avoiding the accumulation and secondary adhesion of debris on the surface of the steel plate 1, thereby ensuring the continuous cleanliness of the grinding area and improving the grinding quality and efficiency. At the same time, the shielding design of the air guide plate 80 can precisely control the airflow direction, making the airflow more concentrated on the target area and enhancing the cleaning effect.

[0066] Both the first slanted grinding wheel 45 and the second slanted grinding wheel 57a are provided with multiple scraper grooves 81. One side of each scraper groove 81 is shaped like a shovel, and the other side is double-sloped. When the grinding wheels grind the steel plate 1 of the wind turbine tower, the multiple scraper grooves 81 are evenly distributed on the surface of the grinding wheels. The shovel-shaped side can better cut into the oxide layer and impurities on the surface of the steel plate 1 during the grinding process, playing a preliminary scraping role and improving grinding efficiency. The double-sloped side helps to smoothly discharge the scraped debris and guide it to the blowing structure for cleaning, avoiding the accumulation of debris between the grinding wheel and the steel plate 1, which would affect the grinding effect. This unique structural design enables the grinding wheels to efficiently remove defects from the surface of the steel plate 1 during the grinding process, while ensuring the uniformity and flatness of the grinding, further improving the grinding quality.

[0067] The guide wheel 65 has an annular groove with a triangular cross-section. When the guide wheel 65 at the lower end of the second slide rod is in contact with one side of the wind turbine tower steel plate 1, the triangular cross-section of the annular groove design can enhance the contact friction between the guide wheel 65 and the side of the steel plate 1, ensuring that it is not easy to slip during the guiding process and improving the stability of the limit guidance. At the same time, this structure can also form a slight scraping effect when the guide wheel 65 rotates, automatically removing the small impurities and rust particles attached to the side of the steel plate 1, and avoiding impurities from affecting the guiding accuracy.

[0068] When the invention is in operation, the mobile carriage 2 moves on the steel plate 1. The output shafts of the upper servo motor 7 and the lower servo motor 8 pass through the grinding frame 4. The flat grinding wheels 10 of the output shafts of the upper servo motor 7 and the lower servo motor 8 are respectively set on the upper and lower surfaces of the steel plate 1. The upper moving seat 5 and the lower moving seat 6 on the grinding frame 4 can be raised and lowered to adjust their positions, thereby adjusting the upper and lower flat grinding wheels 10 to fit tightly against the upper and lower surfaces of the steel plate 1 for grinding. At the same time, the first inclined grinding wheel 45 on the front grinding assembly grinds the upper inclined bevel 3a, and the second inclined grinding wheel 57a on the rear grinding assembly grinds the lower inclined bevel 3b. As the mobile carriage 2 moves on the steel plate 1, the side of the steel plate 1 can be ground.

[0069] This invention provides an integrated and highly adaptable automatic grinding device for the bevel of steel plates 1 of wind turbine towers. By integrating the front grinding assembly, the rear grinding assembly, and the centrally located dual grinding wheel system onto the same self-propelled platform, it achieves synchronous and continuous grinding of the bevel and upper and lower surfaces of the steel plate 1, significantly improving overall processing efficiency and avoiding the cumbersome process of multiple positioning and step-by-step operation required by traditional equipment. The device adopts a multi-level adjustable structure, such as the design of the rotating guide rod, linear guide rail, and moving slider in the front and rear grinding assemblies, which allows the position, angle, and pressure of the grinding wheels to be flexibly adjusted according to the thickness, bevel shape, and surface curvature of the steel plate 1. This enhances the adaptability of the device to workpieces of different specifications, ensures the uniformity and accuracy of the grinding process, and effectively solves the technical bottlenecks of narrow applicability and inconvenient adjustment of traditional equipment.

[0070] This invention is not limited to the above embodiments. Based on the technical solutions disclosed in this invention, those skilled in the art can make some substitutions and modifications to some of the technical features without creative effort, and all such substitutions and modifications are within the protection scope of this invention.

Claims

1. An automatic grinding device for bevels of steel plates used in wind turbine towers, comprising a mobile trolley capable of moving and traveling on the steel plate, wherein one side of the steel plate is provided with a grinding bevel, characterized in that... The mobile trolley includes a trolley body, with a mounting plate on the upper part of the trolley body. A grinding frame is mounted in the middle of the mounting plate. The grinding frame extends outward and is arranged corresponding to the grinding bevel. A liftable upper moving seat and a lower moving seat are respectively mounted on the grinding frame via a guide mechanism. An upper servo motor and a lower servo motor are respectively mounted on the upper moving seat and the lower moving seat. Several through slots are opened on the grinding frame corresponding to the upper and lower servo motors. The output shafts of the upper and lower servo motors pass through the corresponding through slots and are equipped with a flat grinding wheel. The flat grinding wheels of the upper and lower servo motors are respectively arranged corresponding to the upper and lower surfaces of the steel plate edge. A front grinding assembly and a rear grinding assembly are respectively mounted on the mounting plate on the front and rear sides of the grinding frame. The grinding bevel includes an upper inclined bevel and a lower inclined bevel. The front grinding assembly and the rear grinding assembly are respectively arranged corresponding to the upper inclined bevel and the lower inclined bevel.

2. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 1, characterized in that, The mounting plate is arranged horizontally, and a rear mounting part is provided on the side of the mounting plate away from the grinding bevel. A support seat is provided on the mounting plate, and the grinding machine frame is fixed on the support seat. The grinding machine frame is L-shaped and includes a flat plate and a vertical plate. The flat plate is fixed on the support seat, and the edge of the flat plate extends horizontally beyond the edge of the steel plate. The vertical plate is arranged corresponding to the grinding bevel.

3. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 2, characterized in that, The guiding mechanism includes two parallel vertical lifting guide rails arranged on the vertical plate. Each lifting guide rail is equipped with an upper electric slide and a lower electric slide that can move up and down. The upper and lower electric slides are arranged vertically and correspondingly to each other. The upper electric slides on the two lifting guide rails are arranged horizontally and correspondingly to each other. The upper moving seat is fixed to the outer side of the two upper electric slides, and the lower moving seat is fixed to the outer side of the two lower electric slides. There are two through slots, which are vertical waist-shaped slots. The two through slots are opened vertically and alternately in the middle of the vertical plate of the grinding machine frame. The two lifting guide rails are located on the left and right sides of the two through slots respectively. The output shaft of the upper servo motor passes longitudinally through the upper moving seat and then through the corresponding through slot. The output shaft of the lower servo motor passes longitudinally through the lower moving seat and then through the corresponding through slot. The vertical plate of the grinding machine frame is equipped with an upper pressure component and a lower tension component corresponding to the upper and lower moving seats respectively.

4. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 3, characterized in that, The upper pressure assembly includes an upper fixed support 1 disposed at the upper end of each lifting guide rail. Each upper fixed support 1 is connected to a vertical upper damper. An L-shaped upper bracket is also fixed to each upper fixed support 1. The upper brackets and upper dampers are staggered. Two symmetrical L-shaped lower brackets are mounted on the upper movable seat. Each lower bracket corresponds one-to-one with one of the two upper brackets. The horizontal portions of both the L-shaped upper and lower brackets extend outwards. A vertical guide rod 1 is provided between each corresponding L-shaped upper and lower bracket. The upper end of rod one is fixed to the horizontal part of the upper support. The lower end of guide rod one passes through the horizontal part of the lower support and is movably connected to it. A compression spring one is sleeved on the outer periphery of guide rod one. The upper and lower ends of compression spring one elastically abut against the horizontal parts of the upper and lower supports, respectively. An anti-disengagement positioning pin is radially provided at both the upper and lower ends of guide rod one. A lower movable support one extending outward is fixed on the vertical part of the lower support. The two lower movable supports one are respectively provided with two upper dampers. The lower end of the upper damper is connected to the corresponding lower movable support one.

5. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 3, characterized in that, The pull-down force assembly includes an upper fixed support 2 disposed on each lifting guide rail. The upper fixed support 2 is vertically located below the upper electric slide. Each upper fixed support 2 is provided with a horizontal upper mounting pin. The lower moving seat is provided with two lower moving supports 2 symmetrically distributed on the left and right sides corresponding to the two upper fixed supports 2. Each lower moving support 2 is provided with a horizontal lower mounting pin. The two upper mounting pins are respectively provided with two lower mounting pins. A parallel lower damper and a tension spring 1 are provided between the corresponding upper and lower mounting pins. The upper and lower ends of the lower damper are respectively connected to the corresponding upper and lower mounting pins. The lower end of the lifting guide rail is provided with a fixed limit block.

6. An automatic grinding equipment for beveling steel plates of wind turbine towers according to any one of claims 2-5, characterized in that, The front grinding assembly includes a front support mounted on a mounting plate, located in front of a support base. A front ear seat is mounted on the front support, and a rotating frame is rotatably connected to the front ear seat via a pin. A linear guide rail is mounted on the rotating frame, and a movable slider is movably connected to the linear guide rail. Mounting brackets and vertical limiting plates are respectively located at the upper and lower ends of the rotating frame. Arc-shaped guide grooves are formed on both the left and right side plates of the front ear seat. Guide blocks are provided on both the left and right sides of the rotating frame, with each guide block fitting into one of the guide grooves. A guide rod is fixed to the L-shaped mounting bracket, parallel to the length direction of the linear guide rail. An outer step is provided at the upper end of the guide rod, and a compression spring is fitted around its outer circumference. A rotating guide rod is fixedly mounted on the movable slider. First, the length direction of the rotating guide rod is perpendicular to that of the linear guide rail. The movable slider is also fixed with an L-shaped connecting bracket. The connecting bracket has a guide hole that allows the guide rod to pass through. The connecting bracket is movably connected to the guide rod. One end of the guide rod passing through the connecting bracket is radially provided with an anti-disengagement positioning pin. The upper and lower ends of the compression spring are elastically abutting against the outer step and the connecting bracket, respectively. A movable outer frame is movably connected to the rotating guide rod. The movable outer frame is fitted onto the rotating guide rod. Several clamping bolts are threaded onto the movable outer frame. The clamping bolts pass through the movable outer frame and clamp the rotating guide rod. A servo motor is mounted on the movable outer frame via a motor bracket. A slanted grinding wheel is mounted on the output end of the servo motor. The slanted grinding wheel is set with an upper inclined bevel.

7. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 6, characterized in that, The post-grinding assembly includes a rear support mounted on a mounting plate, located behind the support base. A rear ear seat is mounted on the rear support, and a rotating frame two is rotatably connected to the rear ear seat via a pin. The rear ear seat has the same structure as the front ear seat. A linear guide rail two is mounted on the rotating frame two, and a movable slider two is movably connected to the linear guide rail two. An L-shaped rotating guide rod two is mounted on the movable slider two. A limiting plate two is vertically mounted at the lower end of the rotating frame two. A U-shaped mounting bracket one is mounted on the movable slider two, with two mounting holes one. The upper end of the linear guide rail two is fixed to the U-shaped mounting bracket two. The rotating guide rod has two mounting holes, which correspond to the two mounting holes. A tension spring is provided between each corresponding mounting hole. A movable frame is also movably connected to the rotating guide rod. The movable frame is fitted onto the parallel section of the L-shaped rotating guide rod. The parallel section of the rotating guide rod is parallel to the linear guide rail. Several clamping bolts are threaded onto the movable frame. The clamping bolts pass through the movable frame and clamp the rotating guide rod. A servo motor is mounted on the movable frame via a motor bracket. A slanted grinding wheel is mounted on the output end of the servo motor. The slanted grinding wheel is set with a corresponding bevel on the lower slope.

8. An automatic grinding equipment for beveling steel plates of wind turbine towers according to any one of claims 2-5, characterized in that, The mounting plate is provided with a fixed seat 1, a fixed block 1 on the fixed seat 1, a sliding hole 1 on the fixed block 1, a longitudinal sliding rod 1 that passes through the sliding hole 1 and is movably connected thereto, a vertical clamping bolt 3 with a handle that is threaded onto the fixed block 1, a fixed block 2 at the front end of the sliding rod 1, a sliding hole 2 on the fixed block 2, a vertical sliding rod 2 that passes through the sliding hole 2 and is movably connected thereto, a transverse clamping bolt 4 with a handle that is threaded onto the fixed block 2, a guide wheel at the lower end of the sliding rod 2, the guide wheel being positioned corresponding to one edge of the steel plate.

9. An automatic grinding equipment for beveling steel plates of wind turbine towers according to any one of claims 2-5, characterized in that, The rear mounting part is provided with a fixed seat 2, and a longitudinal limiting rod is installed on the fixed seat 2. A limiting plate is slidably connected to the limiting rod, and a limiting frame is connected to the limiting plate. The limiting frame is gate-shaped and is set correspondingly to the limiting rod. A transverse clamping bolt 5 is threadedly connected to the limiting frame. The clamping bolt 5 passes through the limiting frame and clamps the limiting rod. The limiting plate is set corresponding to the steel plate.

10. An automatic grinding equipment for bevels of wind turbine tower steel plates according to claim 7, characterized in that, Both the output ends of servo motor one and servo motor two are equipped with a first bevel gear. A duct is fixedly connected to one side of each servo motor one and servo motor two. The duct includes an L-shaped connecting section, an end section, and a side section. The side section and the L-shaped connecting section are respectively positioned on the left and right sides of the first or second oblique grinding wheel. The end section is positioned at the front end of the first or second oblique grinding wheel. A support frame is fixedly connected inside the L-shaped connecting section of the duct. A rotating rod is rotatably connected to the middle of the support frame. The rotating rod is perpendicular to the axis of servo motor one or servo motor two. One end of the rotating rod extends out of the duct and is fixedly connected to a second bevel gear. The second bevel gear meshes with the first bevel gear. Several fans are fixedly connected to the rotating rod, and the fans are located inside the duct. Multiple first air holes are opened on the L-shaped connecting section of the duct, and each first air hole is inclined.

11. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 10, characterized in that, The side section of the air duct has multiple No. 2 air holes, and each No. 2 air hole is opened at an angle; the end section of the air duct has several No. 3 air holes, and several air guide plates are provided on the air duct corresponding to each No. 3 air hole. Each No. 1, No. 2 and No. 3 air hole is set with a grinding bevel on the steel plate.

12. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 11, characterized in that, Both the first and second inclined grinding wheels are provided with multiple scraping grooves spaced apart circumferentially. One side of the scraping groove is shaped like a shovel, and the other side is shaped like a double slope.

13. The automatic grinding equipment for beveling steel plates of wind turbine towers according to claim 8, characterized in that, The guide wheel has an annular groove on its outer periphery, and the cross-sectional shape of the annular groove is triangular.

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