Integrated machining device for threaded hole of bearing seat of wind driven generator

Abstract

The invention relates to the field of wind driven generator part machining, in particular to a wind driven generator bearing seat threaded hole integrated machining device which comprises a base and two protection plates, the two protection plates are installed at the left end and the right end of the upper surface of the base correspondingly, and a multi-point tapping mechanism is installed at the top ends of the protection plates. A lifting mechanism is installed on the lower surface of the multi-point tapping mechanism, and a driving mechanism is installed on the upper surface of the multi-point tapping mechanism. A pure mechanical reversing mode is used for replacing a traditional electric control motor forward and reverse rotation mode, great loss caused by repeated forward and reverse rotation of the motor is effectively avoided, the service life of equipment is remarkably prolonged, the rotating operation failure rate caused by electric control system failures is further reduced, and the machining yield of bearing pedestal threaded holes is greatly improved; integrated and automatic machining of multiple threaded holes of the bearing seat is completed, the traditional machining mode of tapping a single hole one by one is thoroughly changed, and the machining efficiency of the threaded holes of the bearing seat is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine component processing technology, specifically a device for integrated processing of threaded holes in wind turbine bearing housings. Background Technology

[0002] Wind turbines are crucial power equipment in the clean energy sector. Their core working principle is to convert wind energy into mechanical work, which drives the rotor to rotate, ultimately producing alternating current. These devices typically consist of core components such as a wind turbine, generator, directional control unit (tail fin), tower, speed limiting safety mechanism, and energy storage device. As a key component for fixing the rotor, the assembly accuracy of the generator bearing housing directly affects the overall operational stability of the wind turbine. After being cast, the bearing housing needs to be threaded using a tapping machine. Only with threaded holes can a reliable assembly between the bearing housing and the generator housing be achieved; therefore, threading is a critical process in the manufacturing of wind turbine bearing housings.

[0003] Currently, the tapping equipment used for tapping wind turbine bearing housings is mainly manual or semi-automatic. Because these machines need to adapt to the tapping requirements of different components, they can only tap one hole at a time, and cannot automate the processing of multiple threaded holes in a single unit for bearing housings. This results in low efficiency in machining the threaded holes of bearing housings, making it difficult to meet the needs of large-scale production. During batch tapping operations, the motor driving the tap needs to repeatedly reverse to switch between tapping and retraction. This not only causes significant wear and tear on the motor, significantly shortening its lifespan, but also makes it prone to malfunctions in the motor control system, leading to deviations in threaded hole machining accuracy, or even direct damage to the threaded holes, drastically reducing the product yield. Furthermore, traditional tapping equipment lacks a flexible tapping depth adjustment structure, making it difficult to machine threaded holes of corresponding thicknesses for bearing housings of different heights and specifications. This significantly limits the processing scenarios and makes it unsuitable for the tapping needs of various sizes of wind turbine bearing housings. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated machining device for threaded holes in wind turbine bearing housings, in order to solve the problems mentioned in the background art, such as the inability to achieve integrated and automated machining, high wear of tapping machines during batch tapping, and limited types of bearing housing machining.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated machining device for threaded holes in a wind turbine bearing housing, comprising a base and two protective plates. The two protective plates are respectively installed on the left and right ends of the upper surface of the base. A multi-point tapping mechanism is installed on the top of the protective plates, which taps the bearing housing from all directions. A lifting mechanism is installed on the lower surface of the multi-point tapping mechanism. While positioning the bearing housing, the lifting mechanism is driven by the multi-point tapping mechanism to move up and down, allowing the bearing housing to be automatically tapped. A driving mechanism is installed on the upper surface of the multi-point tapping mechanism, which provides working power to the multi-point tapping mechanism.

[0006] Preferably, the multi-point tapping mechanism includes a housing mounted on the top of the guard plate. A first rotating shaft is mounted on the center of the upper surface of the housing via a bearing. A driven bevel gear and a first straight gear are keyed to the upper and lower ends of the first rotating shaft, respectively. The driven bevel gear and the first straight gear rotate on the same axis. Several tapping assemblies are mounted on the lower surface of the housing around the first rotating shaft in the circumferential direction via bearings. The first straight gear drives the tapping assemblies to rotate, allowing them to perform tapping operations. This provides dual power for tapping and loading / unloading, achieving automated tapping and improving the processing efficiency of the bearing seat threaded holes.

[0007] Preferably, the tapping assembly includes a second rotating shaft mounted on the lower surface of the housing via a bearing. The top of the second rotating shaft is keyed to a second spur gear that meshes with a first spur gear. A clamp is mounted at the bottom of the second rotating shaft, and a tap is clamped inside the clamp. The clamp can install and remove the tap, and the tap taps the bearing seat when it rotates.

[0008] As a further embodiment of the present invention, the lifting mechanism includes lead screws mounted on the left and right ends of the lower surface of the housing via bearings, and the bottom end of the lead screws is connected to the upper surface of the base via bearings. Two guide rods are installed between the housing and the base, with the guide rods located outside the lead screws. A third spur gear is keyed to the top of the lead screw and meshes with a first spur gear. The transmission ratio between the first spur gear and the third spur gear is less than 1, which increases the angular velocity of the lead screw. A lead screw nut is screwed onto the outer wall of the lead screw. When the lead screw rotates clockwise or counterclockwise, the rotational force of the lead screw thread drives the lead screw nut to move upward or downward. A support plate is installed on the outer wall of the lead screw nut, and the support plate is sleeved on the outer wall of the guide rod. The guide rod can improve the lifting stability of the support plate. The upper surface of the support plate is perpendicular to the extension line of the tap axis, ensuring the accuracy of the tapped thread hole. The two lead screws are driven by multiple points, which improves the lifting stability of the support plate and realizes the loading and unloading of the bearing seat.

[0009] Preferably, a positioning groove is provided at the center of the upper surface of the pallet to position the bearing seat; Preferably, the center point of the positioning groove and the center line of the first rotating shaft are on the same vertical line.

[0010] Preferably, the drive mechanism includes a mounting plate mounted on the upper surface of the housing. A third rotating shaft is horizontally mounted on the bottom right side wall of the mounting plate via bearings. A fourth spur gear and a driving bevel gear are keyed to the left and right ends of the outer wall of the third rotating shaft, respectively. The driving bevel gear meshes with the driven bevel gear, and the transmission ratio between the driving bevel gear and the driven bevel gear is less than 1, increasing the angular velocity of the first spur gear. A motor is mounted on the top left side wall of the mounting plate, and a turntable is mounted on the output end of the motor. The right side wall of the turntable has several positioning blind holes from the inside to the outside, and positioning screw holes are formed on the inner side of the inner wall of each positioning blind hole. An actuating component is inserted into the inner cavity of the positioning blind hole. The actuating component is positioned by the positioning screw hole. A limit sleeve is installed in the middle of the right side wall of the mounting plate. A rack that meshes with the fourth spur gear is inserted into the inner cavity of the limit sleeve. A lifting frame is horizontally installed at the top of the rack. The actuating component is inserted into the inner cavity of the lifting frame. As the turntable drives the actuating component to make a circular motion, the actuating component moves within the lifting frame and pulls the lifting frame to make a lifting motion. This provides lifting power to the lifting frame, replacing the traditional electric control to change the rotation direction, extending the service life of the equipment, and mechanically changing the rotation direction reduces the failure rate and improves the yield of bearing housing processing.

[0011] Preferably, the inner cavity of the positioning blind hole has a regular polygonal shape.

[0012] Preferably, the length of the lifting frame is greater than the diameter of the turntable.

[0013] Preferably, the actuating assembly includes a sleeve, a limiting block is installed on the left end of the outer wall of the sleeve and inserted into the inner cavity of the positioning blind hole, the limiting block prevents the sleeve from rotating, and a roller is installed on the right end of the outer wall of the sleeve and inserted into the inner cavity of the lifting frame via a bearing.

[0014] Preferably, a positioning bolt is screwed to the center of the sleeve, and the roller is positioned when the positioning bolt is screwed into the positioning bolt hole.

[0015] Compared with the prior art, the beneficial effects of the embodiments of the present invention are: 1. This invention uses a motor to drive a turntable to rotate. The rollers and lifting frame work together to drive a rack to complete one lifting action. When the rack and fourth spur gear are in transmission, they drive the active bevel gear to rotate in both clockwise and counterclockwise directions. Then, the meshing of the active and driven bevel gears drives the first spur gear to rotate, providing dual power output for the loading / unloading of bearing housings and tapping operations. This significantly reduces the number of power output points in the device, making subsequent maintenance and repair more convenient. Simultaneously, the pure mechanical reversal method replaces the traditional electric motor forward / reverse mode, effectively avoiding significant wear and tear caused by repeated forward and reverse rotation of the motor, significantly extending the service life of the equipment, reducing the failure rate of rotational operations caused by electrical control system malfunctions, and greatly improving the yield rate of the threaded holes in the bearing housings.

[0016] 2. This invention achieves rational power distribution through the first spur gear. The meshing transmission between the first spur gear and the third spur gear drives the lead screw to rotate in both clockwise and counterclockwise directions. The rotational force of the lead screw's thread drives the pallet to rise and fall smoothly along the guide rod, realizing automated loading and unloading of the bearing housing. At the same time, the meshing transmission between the first spur gear and the second spur gear drives the taps of all tapping components to rotate synchronously in both clockwise and counterclockwise directions, realizing simultaneous tapping and unloading of multiple taps. This completes the integrated automated processing of multiple threaded holes in the bearing housing, completely changing the traditional single-hole tapping processing mode, greatly improving the processing efficiency of the threaded holes in the bearing housing, and can well match the processing needs of large-scale production of wind turbine bearing housings.

[0017] 3. This invention achieves flexible adjustment of tapping depth through the adjustable design of the actuating component. By inserting the limiting block into the positioning blind holes at different positions on the turntable, and fixing the actuating component through the thread engagement of the positioning bolt and the positioning screw hole, the rotation radius of the roller can be adjusted, thereby changing the movement distance of the rack. Ultimately, this achieves precise adjustment of the tapping distance of the device, allowing the device to adapt to the processing of threaded holes of wind turbine bearing seats of different heights and specifications according to processing requirements. This effectively breaks through the processing limitations of traditional tapping equipment, broadens the application range of the device, and significantly improves the use value and market applicability of the device. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the multi-point tapping mechanism of the present invention; Figure 3 This is a diagram illustrating the first spur gear and tapping assembly of the present invention; Figure 4 This is a perspective view of the tapping assembly of the present invention; Figure 5 This is a perspective view of the lifting mechanism of the present invention; Figure 6 This is a perspective view of the drive mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 This is a perspective view of the toggle component of the present invention.

[0019] In the diagram: 1. Base; 2. Protective plate; 3. Multi-point tapping mechanism; 4. Lifting mechanism; 5. Drive mechanism; 31. Housing; 32. First rotating shaft; 33. Driven bevel gear; 34. First spur gear; 35. Tapping assembly; 351. Second rotating shaft; 352. Second spur gear; 353. Fixture; 354. Tap; 41. Lead screw; 42. Guide rod; 43. Third spur gear; 44. Lead screw nut; 45. Support plate; 46. Positioning groove; 51. Mounting plate; 52. Third rotating shaft; 53. Fourth spur gear; 54. Driving bevel gear; 55. Motor; 56. Turntable; 57. Positioning blind hole; 58. Positioning screw hole; 59. Actuating assembly; 510. Limit sleeve; 511. Rack; 512. Lifting frame; 591. Sleeve; 592. Limit block; 593. Roller; 594. Positioning bolt. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] Please see Figures 1-8 In this embodiment of the invention, a wind turbine bearing housing threaded hole integrated processing device includes a base 1 and two protective plates 2. The two protective plates 2 are respectively installed on the left and right ends of the upper surface of the base 1. A multi-point tapping mechanism 3 is installed on the top of the protective plate 2. The multi-point tapping mechanism 3 taps the bearing housing in all directions. A lifting mechanism 4 is installed on the lower surface of the multi-point tapping mechanism 3. While positioning the bearing housing, the lifting mechanism 4 is driven by the multi-point tapping mechanism 3 to lift and lower, so that the bearing housing is automatically tapped. A driving mechanism 5 is installed on the upper surface of the multi-point tapping mechanism 3. The driving mechanism 5 provides working power for the multi-point tapping mechanism 3.

[0023] Furthermore, the multi-point tapping mechanism 3 includes a housing 31 mounted on the top of the guard plate 2. A first rotating shaft 32 is mounted on the center of the upper surface of the housing 31 via a bearing. The upper and lower ends of the first rotating shaft 32 are respectively keyed to a driven bevel gear 33 and a first straight gear 34. The driven bevel gear 33 and the first straight gear 34 rotate on the same axis. The first straight gear 34 drives the tapping assembly 35 and the lifting mechanism 4, enabling not only automated loading and unloading but also integrated tapping, thus achieving automated tapping. Several tapping assemblies 35 are mounted on the lower surface of the housing 31 around the first rotating shaft 32 in the circumferential direction via bearings. The first straight gear 34 drives the tapping assembly 35 to rotate, allowing the tapping assembly 35 to perform tapping operations.

[0024] Abandoning the traditional single-hole tapping method, multiple tapping components arranged circumferentially rotate synchronously at 35°, which can complete the tapping of all preset threaded holes in the bearing housing at one time, thus increasing the processing efficiency several times and adapting to the needs of large-scale production.

[0025] The dual power distribution for tapping and lifting is achieved through the first spur gear 34, eliminating the need for a separate power source for tapping. This reduces the number of power output points and transmission components in the equipment, making the overall structure simpler and lowering the manufacturing cost and assembly difficulty.

[0026] The coaxial drive and circumferential uniform distribution design ensure that the rotational angular velocity of each tapping component is consistent, and the tapping depth and thread accuracy are uniform. This effectively avoids the problem of inconsistent thread hole machining accuracy caused by transmission deviation and improves the overall quality of bearing housing tapping.

[0027] The overall modular design of the mechanism allows for flexible adjustment of the number and installation position of the tapping components 35 according to the distribution of threaded holes in bearing housings of different specifications; at the same time, the integrated assembly method makes component inspection and replacement more convenient, reducing the later maintenance cost of the equipment.

[0028] Furthermore, the tapping assembly 35 includes a second rotating shaft 351 mounted on the lower surface of the housing 31 via a bearing. The top of the second rotating shaft 351 is keyed to a second spur gear 352 that meshes with the first spur gear 34. A clamp 353 is mounted at the bottom of the second rotating shaft 351. A tap 354 is clamped inside the clamp 353. The clamp 353 can install and remove the tap 354. When the tap 354 rotates, it taps the bearing seat.

[0029] Furthermore, the lifting mechanism 4 includes lead screws 41 mounted on the left and right ends of the lower surface of the housing 31 via bearings, with the bottom end of the lead screws 41 connected to the upper surface of the base 1 via bearings. Two guide rods 42 are installed between the housing 31 and the base 1, with the guide rods 42 located outside the lead screws 41. A third spur gear 43 is keyed to the top of the lead screw 41 and meshes with the first spur gear 34. The transmission ratio between the first spur gear 34 and the third spur gear 43 is less than 1, increasing the angular velocity of the lead screw 41. A lead screw nut 44 is screwed onto the outer wall of the lead screw 41. When the lead screw 41 rotates clockwise or counterclockwise, the lead screw 41... The rotational force of the thread drives the lead screw nut 44 to move up or down, enabling automatic loading and unloading of the bearing housing. A support plate 45 is installed on the outer wall of the lead screw nut 44, and the support plate 45 is sleeved on the outer wall of the guide rod 42. The guide rod 42 can improve the lifting stability of the support plate 45. The upper surface of the support plate 45 is perpendicular to the extension line of the axis of the tap 354, ensuring the accuracy of the tapped thread hole. A positioning groove 46 is opened at the center of the upper surface of the support plate 45. The bearing housing is positioned by the positioning groove 46. The center point of the positioning groove 46 is on the same vertical line as the center line of the first rotating shaft 32, which centers the bearing housing and determines the tapping position of the bearing housing.

[0030] Two lead screws 41 are symmetrically arranged between the housing 31 and the base 1, synchronously driving the support plate 45 to rise and fall, so that the support plate 45 is evenly stressed and avoids the problem of uneven load in single lead screw transmission.

[0031] The transmission ratio between the first spur gear 34 and the third spur gear 43 is less than 1, which increases the angular velocity of the lead screw 41, making the lifting rhythm of the support plate 45 match the tapping rhythm of the tap 354, thereby improving the overall work efficiency.

[0032] The combined design of the synchronous transmission of the double lead screw 41 and the limiting guidance of the guide rod 42 completely avoids the rotation and offset problems during the lifting and lowering process of the support plate 45, ensuring that the bearing seat remains stable in position during the tapping process and guaranteeing the machining accuracy of the threaded hole from the motion level.

[0033] The automatic lifting and lowering of the pallet 45 is achieved through the threaded transmission of the lead screw 41, and the tapping action of the multi-point tapping mechanism 3 completes the automated feeding and unloading, eliminating the traditional manual loading and unloading method, greatly improving the overall processing efficiency, and adapting to large-scale production.

[0034] The power source of the multi-point tapping mechanism 3 can be directly reused, eliminating the need for additional servo motors and electronic control systems. This reduces the number of power output points and electronic control components, which not only lowers the manufacturing cost of the equipment but also makes the transmission path clearer and facilitates later inspection and maintenance.

[0035] Furthermore, the drive mechanism 5 includes a mounting plate 51 mounted on the upper surface of the housing 31. A third rotating shaft 52 is horizontally mounted on the bottom right side wall of the mounting plate 51 via bearings. A fourth spur gear 53 and a driving bevel gear 54 are keyed to the left and right ends of the outer wall of the third rotating shaft 52, respectively. The driving bevel gear 54 meshes with the driven bevel gear 33, and the transmission ratio between the driving bevel gear 54 and the driven bevel gear 33 is less than 1, increasing the angular velocity of the first spur gear 34. A motor 55 is mounted on the top left side wall of the mounting plate 51, and a turntable 56 is mounted on the output end of the motor 55. Several positioning blind holes 57 are opened from the inside to the outside on the right side wall of the turntable 56. By varying the distance from the positioning blind holes 57 to the rotation center point of the turntable 56, the rotation radius of the actuating component 59 is changed. The inner cavity shape of the positioning blind holes 57 is a regular polygon, and the shape of the positioning blind holes 57 is used to prevent the limit block 592 from rotating. The limit block 592 can be inserted from various angles. The blind hole 57 reduces the difficulty of operation for staff. The inner wall of the blind hole 57 has a positioning screw hole 58. The actuating component 59 is inserted into the inner cavity of the blind hole 57 and is positioned by the positioning screw hole 58. The right side wall of the mounting plate 51 is equipped with a limit sleeve 510. The inner cavity of the limit sleeve 510 is equipped with a rack 511 that meshes with the fourth spur gear 53. The outer wall of the rack 511 is provided with a protruding ridge, which makes the contact between the rack 511 and the limit sleeve 510 more complex and improves the movement stability of the rack 511. The top of the rack 511 is horizontally mounted with a lifting frame 512. The actuating component 59 is inserted into the inner cavity of the lifting frame 512. As the turntable 56 drives the actuating component 59 to make a circular motion, the actuating component 59 moves in the lifting frame 512 and pulls the lifting frame 512 to make a lifting motion. The length of the lifting frame 512 is greater than the diameter of the turntable 56 to avoid the sliding of the actuating component 59 in the lifting frame 512 being restricted.

[0036] Through the mechanical cooperation of turntable 56, toggle assembly 59, lifting frame 512 and rack 511, the unidirectional circumferential rotation of motor 55 is transformed into the reciprocating lifting of rack 511, thereby realizing the bidirectional rotation of fourth spur gear 53, replacing the traditional electric control forward and reverse rotation structure.

[0037] The driving bevel gear 54 and the driven bevel gear 33 adopt a meshing design with a transmission ratio of less than 1 to achieve accelerated power transmission, so that the angular velocity of the first spur gear 34 can be adapted to the tapping and lifting operation rhythm.

[0038] Several positioning blind holes 57 are opened on the turntable 56 from the inside to the outside. The actuating component 59 can be selectively inserted and fixed. The tapping depth can be adjusted by changing the rotation radius and adjusting the lifting distance of the rack 511.

[0039] Abandoning the traditional servo motor's repeated forward and reverse rotation electrical control mode, it achieves bidirectional power commutation through a purely mechanical structure, effectively avoiding the winding losses and shortened lifespan caused by frequent forward and reverse rotation of the servo motor; at the same time, it reduces the number of components in the electrical control system, reduces processing accidents caused by electrical control failures, and improves the overall reliability of the equipment.

[0040] Motor 55 realizes the entire process of power input, reversal and transmission, and provides synchronous power for multi-point tapping mechanism 3 and lifting mechanism 4. It reduces the power components and transmission nodes of the equipment, makes the overall transmission path clear and the structure compact, and reduces the manufacturing cost of the equipment and the difficulty of later inspection and maintenance.

[0041] By adjusting the insertion position of the actuating component 59 in different positioning blind holes 57, its rotation radius is changed, and the lifting distance of the rack 511 is adjusted accordingly, ultimately achieving precise adjustment of the tapping depth. This can adapt to the processing requirements of wind turbine bearing seats of different heights and specifications, breaking through the processing limitations of traditional tapping equipment.

[0042] The multiple limiting structure of the regular polygonal positioning blind hole 57, the protruding ridge of the rack 511, and the extended lifting frame 512 fundamentally avoids the problems of rotation, offset, and jamming in the transmission process of the mechanism, ensuring the stability of the rack 511 lifting and the accuracy of gear meshing, thereby ensuring the synchronization of power transmission and allowing the tapping and lifting actions to be precisely coordinated.

[0043] Furthermore, the actuating assembly 59 includes a sleeve 591. A limiting block 592 is installed on the left end of the outer wall of the sleeve 591 and is inserted into the inner cavity of the positioning blind hole 57. The limiting block 592 prevents the sleeve 591 from rotating. A roller 593 is installed on the right end of the outer wall of the sleeve 591 through a bearing and is inserted into the inner cavity of the lifting frame 512. When the roller 593 rolls in the lifting frame 512, it reduces mechanical wear. A positioning bolt 594 is screwed into the center of the sleeve 591. When the positioning bolt 594 is screwed into the positioning screw hole 58, the roller 593 is positioned.

[0044] The working principle is as follows: Step 1: Motor 55 provides rotational power to turntable 56, and roller 593, which is limited by positioning blind hole 57, makes circular motion. While roller 593 slides in lifting frame 512, it moves lifting frame 512 up and down. At the same time, rack 511 moves with lifting frame 512. Under the transmission condition of rack 511 and fourth spur gear 53, driving bevel gear 54 rotates clockwise and counterclockwise in both directions, providing power for automatic tapping of bearing seat. Step 2: The first spur gear 34 is rotated in both clockwise and counterclockwise directions by the transmission between the driving bevel gear 54 and the driven bevel gear 33. When the first spur gear 34 rotates counterclockwise, the tap 354 rotates clockwise under the transmission condition between the first spur gear 34 and the second spur gear 352. When the first spur gear 34 is transmitted to the third spur gear 43, the rotational force of the screw 41 drives the support plate 45 to rise. The bearing seat in the positioning groove 46 gradually approaches the tap 354, and the support plate 45 feeds the material. Multiple taps 354 tap at the same time to realize the integrated processing of the threaded hole of the bearing seat. Step 3: When the first spur gear 34 rotates clockwise, the second spur gear 352 drives the tap 354 to rotate counterclockwise. At the same time, the lead screw 41 rotates counterclockwise, causing the support plate 45 to gradually move away from the tap 354, allowing the tap 354 to exit from the bearing seat, thus avoiding damage to the threaded hole and achieving automatic and integrated processing of the bearing seat threaded hole. Step four: When it is necessary to adjust the tapping depth, unscrew the positioning bolt 594 from the positioning screw hole 58, separate the limit block 592 from the positioning blind hole 57, insert the limit block 592 into the corresponding positioning blind hole 57 according to the tapping depth, and then screw the positioning bolt 594 into the positioning screw hole 58. According to the different distances from the positioning blind hole 57 to the rotation center of the turntable 56, change the rotation radius of the roller 593, thereby changing the lifting distance of the rack 511. Adjust the lifting height of the support plate 45 by controlling the rotation angle of the lead screw 41, so as to complete the tapping of bearing seats of different depths according to the usage requirements.

[0045] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A device for integrally machining threaded holes in a wind turbine bearing housing, comprising a base (1) and two protective plates (2), wherein the two protective plates (2) are respectively installed on the left and right ends of the upper surface of the base (1), characterized in that, The top of the guard plate (2) is equipped with a multi-point tapping mechanism (3), which taps the bearing seat in all directions. The lower surface of the multi-point tapping mechanism (3) is equipped with a lifting mechanism (4). While positioning the bearing seat, the lifting mechanism (4) is driven by the multi-point tapping mechanism (3) to lift and lower, so that the bearing seat can be automatically tapped. The upper surface of the multi-point tapping mechanism (3) is equipped with a driving mechanism (5), which provides working power for the multi-point tapping mechanism (3). The multi-point tapping mechanism (3) includes a housing (31) installed on the top of the guard plate (2). A first rotating shaft (32) is installed at the center of the upper surface of the housing (31) via a bearing. The upper and lower ends of the first rotating shaft (32) are respectively keyed to a driven bevel gear (33) and a first straight gear (34). The driven bevel gear (33) and the first straight gear (34) rotate on the same axis. Several tapping assemblies (35) are installed on the lower surface of the housing (31) around the first rotating shaft (32) in the circumferential direction via bearings. The tapping assemblies (35) are driven to rotate by the first straight gear (34) so ​​that the tapping assemblies (35) can perform tapping operations.

2. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 1, characterized in that, The tapping assembly (35) includes a second rotating shaft (351) mounted on the lower surface of the housing (31) via a bearing. The top of the second rotating shaft (351) is keyed to a second spur gear (352) that meshes with the first spur gear (34). A clamp (353) is mounted at the bottom of the second rotating shaft (351). A tap (354) is clamped inside the clamp (353). The clamp (353) can install and remove the tap (354). When the tap (354) rotates, it taps the bearing seat.

3. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 2, characterized in that, The lifting mechanism (4) includes lead screws (41) mounted on the left and right ends of the lower surface of the housing (31) via bearings, and the bottom end of the lead screws (41) is connected to the upper surface of the base (1) via bearings. Two guide rods (42) are installed between the housing (31) and the base (1), with the guide rods (42) located outside the lead screws (41). The top of the lead screws (41) is keyed to a third spur gear (43) that meshes with the first spur gear (34). The transmission ratio between the first spur gear (34) and the third spur gear (43) is less than 1, which lifts the lead screw. The angular velocity of the screw (41) is such that a screw nut (44) is screwed onto the outer wall of the screw (41). When the screw (41) rotates clockwise or counterclockwise, the rotational force of the screw (41) thread drives the screw nut (44) to move up or down. A support plate (45) is installed on the outer wall of the screw nut (44), and the support plate (45) is sleeved on the outer wall of the guide rod (42). The guide rod (42) can improve the lifting stability of the support plate (45). The upper surface of the support plate (45) is perpendicular to the extension line of the tap (354) axis, ensuring the accuracy of the tapped thread hole.

4. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 3, characterized in that, A positioning groove (46) is provided at the center of the upper surface of the pallet (45) to position the bearing seat.

5. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 4, characterized in that, The center point of the positioning groove (46) and the center line of the first rotating shaft (32) are on the same vertical line.

6. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 5, characterized in that, The drive mechanism (5) includes a mounting plate (51) mounted on the upper surface of the housing (31). A third rotating shaft (52) is horizontally mounted on the bottom right side wall of the mounting plate (51) via a bearing. A fourth spur gear (53) and a driving bevel gear (54) are keyed to the left and right ends of the outer wall of the third rotating shaft (52), respectively. The driving bevel gear (54) meshes with the driven bevel gear (33). The transmission ratio between the driving bevel gear (54) and the driven bevel gear (33) is less than 1, which increases the angular velocity of the first spur gear (34). A motor (55) is mounted on the top left side wall of the mounting plate (51). A turntable (56) is mounted on the output end of the motor (55). Several positioning blind holes (5) are opened from the inside to the outside on the right side wall of the turntable (56). 7) A positioning screw hole (58) is provided on the inner side of the inner wall of the positioning blind hole (57). A toggle component (59) is inserted into the inner cavity of the positioning blind hole (57). The toggle component (59) is positioned by the positioning screw hole (58). A limit sleeve (510) is installed in the middle of the right side wall of the mounting plate (51). A rack (511) that meshes with the fourth spur gear (53) is inserted into the inner cavity of the limit sleeve (510). A lifting frame (512) is horizontally installed at the top of the rack (511). The toggle component (59) is inserted into the inner cavity of the lifting frame (512). As the turntable (56) drives the toggle component (59) to make a circular motion, the toggle component (59) moves in the lifting frame (512) while pulling the lifting frame (512) to make a lifting motion.

7. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 6, characterized in that, The inner cavity of the positioning blind hole (57) is a regular polygon.

8. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 7, characterized in that, The length of the lifting frame (512) is greater than the diameter of the turntable (56).

9. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 8, characterized in that, The actuating assembly (59) includes a sleeve (591), and a limiting block (592) is installed on the left end of the outer wall of the sleeve (591) and inserted into the inner cavity of the positioning blind hole (57). The limiting block (592) prevents the sleeve (591) from rotating. A roller (593) is installed on the right end of the outer wall of the sleeve (591) through a bearing and inserted into the inner cavity of the lifting frame (512).

10. The integrated machining device for threaded holes in wind turbine bearing housings according to claim 9, characterized in that, A positioning bolt (594) is screwed into the center of the sleeve (591). When the positioning bolt (594) is screwed into the positioning screw hole (58), the roller (593) is positioned.

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