A self-cleaning aero-engine turbine blade grinding device

Abstract

This invention discloses a self-cleaning aero-engine turbine blade grinding device. The invention relates to the field of turbine blade grinding technology and includes a base on which a robotic arm is rotatably connected. A servo motor is mounted on the end of the robotic arm furthest from the base, and a telescopic rod is connected to the output end of the servo motor. A vacuum cleaner is fixedly mounted on the side wall of the robotic arm. This self-cleaning aero-engine turbine blade grinding device achieves a smooth transition of the grinding head from one turbine blade to another through a simple rotational adjustment of the grinding head's orientation. This effectively shortens the overall grinding time, improves grinding efficiency, and automatically collects and processes dust and debris from the turbine blade surface, effectively preventing dust and debris from flowing back or splashing out from the air inlet, thus eliminating the risk of secondary scratches on the turbine blade surface caused by dust and debris.

Description

Technical Field

[0001] This invention relates to the field of engine turbine blade grinding technology, specifically to a self-cleaning aero-engine turbine blade grinding device. Background Technology

[0002] During the operation of aero-engines, the surface of turbine blades gradually accumulates dirt due to the accumulation of dust, sand, and other impurities in the air. This dirt reduces the surface smoothness of the turbine blades, affecting their performance and efficiency, and may even lead to decreased engine performance, accelerated wear, or even engine failure. In order to ensure the efficient and stable operation of aero-engines and improve their service life and performance, it is necessary to clean and polish the turbine blades regularly. However, traditional turbine blade cleaning and polishing methods have problems such as low efficiency, high cost, and complex operation. Therefore, it is necessary to propose a more efficient and convenient turbine blade polishing device. Summary of the Invention

[0003] To solve the above technical problems, the present invention is achieved through the following technical solution: a self-cleaning aero-engine turbine blade grinding device, including a base, a robotic arm rotatably connected to the base, a servo motor installed at the end of the robotic arm away from the base, a telescopic rod connected to the output end of the servo motor, and a vacuum cleaner fixedly installed on the side wall of the robotic arm;

[0004] A mounting plate is installed at the end of the telescopic rod away from the servo motor. A mounting ring is fixedly connected to the top of the mounting plate. A dust collection cylinder is fixedly connected to the top of the mounting ring. A connecting block is threaded onto the dust collection cylinder. The connecting block is rotatably mounted to the telescopic rod.

[0005] A brush plate is installed at the bottom of the mounting plate. A grinding head is installed at the middle of the end of the brush plate away from the mounting plate. A disc is connected to the end of the grinding head near the mounting plate. A sleeve is installed at the middle of the end of the disc near the mounting plate. A grinding motor is installed at the end of the sleeve near the mounting plate with a pin. The grinding motor is fixedly installed in the middle of the mounting plate. The grinding head is rotated and installed with the mounting plate through the cooperation of the disc and the grinding motor.

[0006] Preferably, the end of the telescopic rod away from the servo motor is threaded with a connector, and the end of the connector away from the telescopic rod is fixedly connected to a coil body. A guide tube is installed in the middle of the coil body, and the entire guide tube is made of flexible material that can be bent and deformed. The guide tube passes through the connector, the telescopic rod, the servo motor and is connected to the vacuum cleaner in sequence.

[0007] Preferably, a cooler is fixedly installed inside the mounting plate, and the cooler is ring-shaped. A cooling fin is connected between the cooler and the grinding motor, and the cooling fin is used to cool the grinding motor. An airbag ring is fitted on the side of the mounting plate, and the airbag ring protrudes from the side of the mounting plate to prevent the side of the mounting plate from directly contacting the blade. A double ring is fixedly connected to the side of the mounting plate near the grinding head, and the double ring is made entirely of a cooling material.

[0008] Preferably, the brush plate has brushes in three directions: brush area one on the side, and brush areas two and three facing and away from the mounting plate. A stepped ring frame is fixedly mounted on the sleeve plate in a ring-shaped manner, and the longitudinal section of the stepped ring frame is stepped and hollow inside. Half of the space inside the stepped ring frame is filled with coolant, and the other half is a vacuum. The stepped ring frame as a whole is also made of a heat-conducting material.

[0009] Preferably, brush area one, brush area two, and brush area three are jointly installed on the stepped structure on the outer side of the stepped ring frame, while the stepped structure on the inner side of the stepped ring frame is in close contact with the double ring body. The double ring body is used to isolate the stepped ring frame from the mounting plate. The side of the grinding head near the grinding motor is in close contact with the stepped ring frame. At the same time, it also prevents the dust and debris cleaned by brush area two from directly contaminating the sleeve plate, preventing dust and debris from blocking and interfering with the rotational transmission structure between the grinding motor and the grinding head, and ensuring that the grinding head's grinding of the blades is not affected by dust and debris.

[0010] Preferably, the dust collection tube has convex ball parts fixedly installed in a circular array on the side near the telescopic rod, and the convex ball parts are made entirely of rubber material. A neck ring is fixedly fitted in an annular shape on the outer surface of the dust collection tube. A rubber ring is fitted on the outer surface of the dust collection tube through the convex ball parts for limiting, and the outer diameter of the rubber ring is larger than the outer diameter of the neck ring.

[0011] Preferably, the inner side of the vacuum cleaner is hollow, and a bucket tube is installed in the middle of the inner side of the vacuum cleaner. The bucket tube is fixedly connected to the grinding motor. A spiral suction tube is fixedly connected between the bucket tube and the vacuum cleaner. The spiral suction tube is connected to the bucket tube in a spiral downward shape. One end of the spiral suction tube passes through the vacuum cleaner and has an air inlet on the outer surface of the vacuum cleaner. The air inlet is located between the neck ring and the rubber ring. The air inlet is used to suck dust and debris into the spiral suction tube under the guidance of the neck ring and the rubber ring.

[0012] Preferably, an inner tube is threadedly installed at the end of the bucket tube away from the grinding motor, and the inner tube is threadedly connected to the guide tube. A tower-shaped suction tube is fixedly connected to the middle of the end of the inner tube near the grinding motor. A cone is fixedly connected to the middle of the inner side of the bucket tube, and the top of the cone extends into the inner side of the tower-shaped suction tube. The tower-shaped suction tube is connected to the spiral suction tube through the bucket tube.

[0013] Preferably, two sets of disc frames are fixedly connected to the connecting block in a centrally symmetrical manner. A DD motor is fixedly installed on the connecting block through the disc frames, and the DD motor is fixedly installed in the middle of one of the disc frames. The output end of the DD motor is installed with a pin to the coil body. The coil body is rotatably installed with the connecting block through the cooperation of the DD motor and the disc frames.

[0014] Preferably, the mounting ring has arc-shaped notches arranged in a circular array on one side near the telescopic rod. The spiral suction tube is fitted into the mounting ring through the arc-shaped notches, and the mounting ring guides and limits the installation of the spiral suction tube on the mounting plate through the arc-shaped notches.

[0015] This invention provides a self-cleaning aero-engine turbine blade grinding device, which has the following beneficial effects:

[0016] I. This self-cleaning aero-engine turbine blade grinding device, through the extension and retraction adjustment of the telescopic rod and the angle adjustment of the telescopic rod around its axis driven by the servo motor, enables the grinding head not only to grind the current turbine blade surface, but also to freely match the grinding direction to grind the other side of an adjacent turbine blade. By rotating to adjust the orientation and position of the grinding head, this simple action can complete the smooth transition of the grinding head from one turbine blade to another, effectively shortening the overall grinding period and improving grinding efficiency.

[0017] II. This self-cleaning aero-engine turbine blade grinding device, through the telescopic structure design of the telescopic rod, enables the grinding device to adapt to turbine blades of different sizes and shapes. The telescopic rod can be rotatably connected to the base via a servo motor and a robotic arm, and has multi-directional adjustment and movement functions. It can adjust the contact force between the grinding head and the surface of the turbine blade to ensure grinding effect and stability.

[0018] Third, this self-cleaning aircraft engine turbine blade grinding device can simultaneously activate a vacuum cleaner to provide suction inside the bucket tube while the grinding head is driven by a grinding motor to grind the surface of the turbine blades. This allows the dust and debris generated during the grinding process to be cleaned off the surface of the turbine blades by the brush plate and then collected into the spiral suction tube through the air inlet on the surface of the suction tube. Under the downward spiral guidance of the spiral suction tube, the dust and debris are then automatically collected and processed from the surface of the turbine blades.

[0019] IV. This self-cleaning aero-engine turbine blade polishing device, through a spiral suction tube and an air inlet on the surface of the suction tube, can actively collect dust and debris spirally downwards inside the tube body. This avoids the accumulation of dust and debris inside the spiral suction tube and effectively utilizes the spiral suction tube itself to guide the dust and debris downwards, limiting the effective movement space of dust and debris within the spiral suction tube. This prevents dust and debris from splashing or being ejected from the air inlet during the collection process, effectively preventing dust and debris from flowing back or splashing out from the air inlet, and eliminating the risk of secondary scratching of the turbine blade surface by dust and debris.

[0020] Fifth, this self-cleaning aero-engine turbine blade grinding device, through a cone set inside the bucket tube, can intercept and block the dust and debris that are spirally collected and guided into the bucket tube, preventing the dust and debris already collected into the bucket tube from splashing out from other spiral suction pipes. At the same time, the curved surface of the cone disperses and offsets the impact force of the dust and debris entering the bucket tube, avoiding the impact and damage of dust and debris to the internal structure of the bucket tube during collection, and ensuring the service life of the bucket tube.

[0021] VI. This self-cleaning aircraft engine turbine blade grinding device, through its structural design of the top of the cone extending into the inside of the tower-shaped suction tube, partially blocks the air intake of the tower-shaped suction tube into the bucket tube body, while locally increasing the air pressure inside the bucket tube body. This enhances the suction force generated by the tower-shaped suction tube inside the bucket tube body, thereby better guiding and quickly collecting the dust and debris temporarily collected in the bucket tube body into the vacuum cleaner for storage.

[0022] VII. This self-cleaning aircraft engine turbine blade polishing device, through a spiral suction tube with a downward-spiraling, centrally converging structure, guides the airflow carrying dust and debris into the tube body. Utilizing this central convergence, combined with the upward-guiding of the cone's curved surface, the dust and debris are promptly sucked into the tower-shaped suction tube. Guided by the tower-shaped suction tube and the guide tube, the dust and debris are collected and stored in the vacuum cleaner, achieving separate collection and isolation of dust and debris. This allows the tube body, in conjunction with the vacuum cleaner cylinder, to continuously adsorb, collect, and clean dust and debris.

[0023] 8. This self-cleaning aircraft engine turbine blade grinding device uses a two-stage collection and guidance method to avoid the problem of individual dust and debris falling off after being sucked into the tower-shaped suction tube. This can alleviate the short-term clogging problem of the tower-shaped suction tube and automatically divide excess dust and debris into two separate streams for guidance, avoiding the problem of concentrated collection and clogging of dust and debris inside the tower-shaped suction tube. This also avoids the need for cleaning and maintenance of the tower-shaped suction tube after long-term use.

[0024] 9. This self-cleaning aero-engine turbine blade grinding device uses an airbag ring, a convex ball, and a rubber ring as a shock-absorbing and anti-collision structure to prevent the grinding head from scraping or bumping against the surface of adjacent turbine blades during its movement. The airbag ring serves as a protective medium between the side of the mounting plate and the turbine blade, avoiding the risk of damage to the turbine blade surface caused by the mounting plate during the movement of the grinding head. The convex ball and rubber ring serve as a protective medium between the dust collection cylinder and the turbine blade, avoiding the risk of damage to the turbine blade surface caused by the dust collection cylinder during the movement of the grinding head. This ensures that the grinding device performs non-destructive grinding on the turbine blades. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of a self-cleaning aero-engine turbine blade grinding device according to the present invention.

[0026] Figure 2 This is a schematic diagram of the assembly structure of the telescopic rod and the mounting plate of the present invention;

[0027] Figure 3 This is a schematic diagram of the assembly structure of the telescopic rod and the guide tube of the present invention;

[0028] Figure 4 This is a schematic diagram showing the disassembled structure of the coil body and connecting block of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the ring of the present invention;

[0030] Figure 6 This is a schematic diagram of the assembly structure of the vacuum cleaner cylinder and the spiral suction tube of the present invention;

[0031] Figure 7 This is a schematic diagram of the assembly structure of the dust collection cylinder and the mounting plate of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the bucket tube body and the convex ball portion of the present invention;

[0033] Figure 9 This is a schematic diagram of the assembly structure of the funnel body and the tower-shaped suction tube of the present invention;

[0034] Figure 10 This is a schematic diagram of the assembly structure of the mounting plate and the grinding head of the present invention;

[0035] Figure 11 This is a schematic diagram of a partial assembly structure of the cooler and airbag ring of the present invention;

[0036] Figure 12 This is a front view of the assembly of the mounting plate and the grinding head of the present invention.

[0037] In the diagram: 1. Base; 2. Robotic arm; 3. Servo motor; 4. Vacuum cleaner; 5. Telescopic rod; 6. Mounting plate; 7. Brush plate; 8. Vacuum cylinder; 9. Connecting block; 10. Mounting ring; 11. Grinding motor; 12. Grinding head; 13. Disc; 14. Sleeve plate; 51. Coil body; 52. Guide pipe; 53. Connector; 61. Cooler; 62. Cooling fin; 63. Airbag ring; 64. Double ring body; 71. Stepped ring frame; 81. Convex ball; 82. Neck ring; 83. Rubber ring; 84. Spiral suction tube; 85. Bucket tube body; 86. Inner tube; 851. Cone; 861. Tower-shaped suction tube; 91. Plate frame; 92. DD motor; 101. Arc-shaped notch. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0039] First embodiment, such as Figures 1 to 12 As shown, the present invention provides a technical solution: a self-cleaning aero-engine turbine blade grinding device, including a base 1, a mechanical arm 2 rotatably connected to the base 1, a servo motor 3 installed at the end of the mechanical arm 2 away from the base 1, a telescopic rod 5 connected to the output end of the servo motor 3, and a vacuum cleaner 4 fixedly installed on the side wall of the mechanical arm 2.

[0040] A mounting plate 6 is installed at the end of the telescopic rod 5 away from the servo motor 3. A mounting ring 10 is fixedly connected to the top of the mounting plate 6. A dust collection cylinder 8 is fixedly connected to the top of the mounting ring 10. A connecting block 9 is threaded on the dust collection cylinder 8. The connecting block 9 is rotatably installed with the telescopic rod 5.

[0041] A brush plate 7 is installed at the bottom of the mounting plate 6. A grinding head 12 is installed at the middle of the end of the brush plate 7 away from the mounting plate 6. A disc 13 is connected to the end of the grinding head 12 near the mounting plate 6. A sleeve plate 14 is installed at the middle of the end of the disc 13 near the mounting plate 6. A grinding motor 11 is installed at the end of the sleeve plate 14 near the mounting plate 6. The grinding motor 11 is fixedly installed in the middle of the mounting plate 6. The grinding head 12 is rotated and installed with the mounting plate 6 through the cooperation of the disc 13 and the grinding motor 11. Several heat dissipation fins are fixedly connected in a circular array on the outer surface of the grinding motor 11 to help the grinding motor 11 dissipate heat and cool down. The disc 13 is designed to facilitate the assembly of the output end of the grinding motor 11 with the grinding head 12.

[0042] The end of the telescopic rod 5 furthest from the servo motor 3 is threaded with a connector 53. The end of the connector 53 furthest from the telescopic rod 5 is fixedly connected to a coil body 51. A guide tube 52 is installed in the middle of the coil body 51. The guide tube 52 is made of flexible material and can be bent and deformed. The guide tube 52 passes through the connector 53, the telescopic rod 5, the servo motor 3 and is connected to the vacuum cleaner 4. The guide tube 52 is connected to the output end of the vacuum cleaner 4 through the hollow setting of the output shaft of the servo motor 3. The inner middle part of the telescopic rod 5 is directly connected to the guide tube 52.

[0043] A cooler 61 is fixedly installed inside the mounting plate 6, and the cooler 61 is ring-shaped. A cooling fin 62 is connected between the cooler 61 and the grinding motor 11, and the cooling fin 62 is used to cool the grinding motor 11. An airbag ring 63 is fitted on the side of the mounting plate 6. The airbag ring 63 protrudes from the side of the mounting plate 6 to prevent the side of the mounting plate 6 from directly contacting the blade. A double ring body 64 is fixedly connected to the side of the mounting plate 6 near the grinding head 12, and the double ring body 64 is made entirely of a cooling material.

[0044] The brush plate 7 has brushes in three directions: brush area one on the side, and brush areas two and three facing and away from the mounting plate 6. The sleeve plate 14 is fixedly fitted with a stepped ring frame 71 in a ring-shaped manner. The longitudinal section of the stepped ring frame 71 is stepped and hollow inside. Half of the space inside the stepped ring frame 71 is filled with coolant and the other half is a vacuum. The stepped ring frame 71 is also made of a heat-conducting material.

[0045] Brush area one, brush area two, and brush area three are all installed on the stepped structure on the outside of the stepped ring frame 71, while the stepped structure on the inside of the stepped ring frame 71 is in close contact with the double ring body 64. The double ring body 64 is used to isolate the stepped ring frame 71 from the mounting plate 6. The side of the grinding head 12 that is close to the grinding motor 11 is in close contact with the stepped ring frame 71. At the same time, it also prevents the dust and debris cleaned by brush area two from directly contaminating the sleeve plate 14, preventing dust and debris from blocking and interfering with the rotational transmission structure between the grinding motor 11 and the grinding head 12, and ensuring that the grinding head 12 is not affected by dust and debris when grinding the blades.

[0046] The vacuum cleaner cylinder 8 has convex ball parts 81 fixedly installed in a circular array on the side near the telescopic rod 5. The convex ball parts 81 are made entirely of rubber material. A neck ring 82 is fixedly fitted in a ring on the outer surface of the vacuum cleaner cylinder 8 to guide dust to the location of the convex ball parts 81. A rubber ring 83 is fitted on the outer surface of the vacuum cleaner cylinder 8 through the convex ball parts 81. The rubber ring 83 is used to intercept the dust and debris guided by the neck ring 82. The outer diameter of the rubber ring 83 is larger than the outer diameter of the neck ring 82. The rubber ring 83 intercepts the dust and debris between itself and the brush plate 7, preventing the dust and debris from splashing and spreading further.

[0047] Two sets of disc frames 91 are fixedly connected to the connecting block 9 in a centrally symmetrical manner. A DD motor 92 is fixedly installed on the connecting block 9 through the disc frame 91, and the DD motor 92 is fixedly installed in the middle of one of the disc frames 91. The output end of the DD motor 92 is installed with the coil body 51 by a pin. The coil body 51 is rotated and installed with the connecting block 9 through the cooperation of the DD motor 92 and the disc frame 91.

[0048] The mounting ring 10 has an arc-shaped notch 101 arranged in a circular array on one side near the telescopic rod 5. The spiral suction tube 84 is fitted and installed with the mounting ring 10 through the arc-shaped notch 101. The mounting ring 10 limits and guides the installation of the spiral suction tube 84 on the mounting plate 6 through the arc-shaped notch 101.

[0049] During operation, the device is used as follows: First, it is installed inside the aircraft engine so that the rotary grinding head 12 can contact the surface of the turbine blades. Then, the base 1 drives the robotic arm 2 to rotate on it, selects a suitable working angle, and then, in combination with the adjustment of the robotic arm 2's own work position angle, moves the mounting plate 6 to the surface of the turbine blades through the telescopic rod 5, so that the grinding head 12 can move along the surface of the turbine blades and grind them. During the grinding process, the grinding motor 11 drives the grinding head 12 and the brush plate 7 to rotate together. At the same time, combined with the telescopic movement of the telescopic rod 5 and the adaptive changes and adjustments of the work position of the robotic arm 2, it is ensured that the grinding head can fully contact all parts of the turbine blade surface to achieve comprehensive grinding.

[0050] During the grinding process, the grinding motor 11 simultaneously drives the sleeve 14 and the grinding head 12 to rotate along their axes. That is, the brush 7 installed on the stepped ring frame 71 rotates synchronously with the grinding head 12 on the surface of the turbine blade. The grinding head 12 grinds the surface of the turbine blade while the brush 7 cleans the dust and debris that are ground off the surface of the turbine blade. This allows the grinding and cleaning processes to be carried out simultaneously, saving the total time consumed by grinding and cleaning, shortening the total time for the grinding device to grind the surface of the turbine blade, and improving the overall efficiency of the grinding device in grinding and cleaning the surface of the turbine blade.

[0051] While the turbine blade surface is being cleaned using brush 7, the cooler 61 is also activated simultaneously. With the adjustment and change of the position of brush 7 by the base 1, robotic arm 2, servo motor 3 and telescopic rod 5, the dust and debris on the turbine blade surface can be effectively cleaned in all directions using brush area one, brush area two and brush area three, leaving no dead corners.

[0052] During the rotation of the brush plate 7 by the stepped ring frame 71, the centrifugal force generated by the rotation of the stepped ring frame 71 throws the coolant in the semi-chamber inside the stepped ring frame 71 to the outer stepped structure, while the chamber in the inner stepped structure is a vacuum. At this time, the stepped ring frame 71 as a whole can be cooled by the double ring body 64. By collecting and transferring coolant through the coolant, the part of the brush plate 7 in contact with the turbine blades can be cooled in real time. That is, the outer stepped structure of the stepped ring frame 71, which is equipped with brush area one, brush area two, and brush area three, is cooled by the coolant to prevent the cleaning part of the brush plate 7 from overheating and also to prevent... The surface of the turbine blades overheats; furthermore, the grinding head 12 can be cooled down through the contact area between the stepped ring frame 71 and the grinding head 12, which helps to dissipate the high temperature generated during grinding. At the same time, when the vacuum chamber is located at the contact area between the grinding head 12 and the stepped ring frame 71 during grinding, the heat generated by the grinding head 12 is blocked outside the mounting plate 6 by the heat insulation effect of the vacuum, avoiding direct contact between the heat and the mounting plate 6, which would affect the heat dissipation and cooling effect of the mounting plate 6 on the grinding motor 11 through the cooling fins 62. This ensures the normal operation of the cooler 61 and the grinding motor 11 and prevents the machine from burning out due to local overheating.

[0053] During use, the airbag ring 63, the convex ball part 81, and the rubber ring 83 serve as a shock-absorbing and anti-collision structure to prevent the grinding head 12 from scraping or bumping the surface of adjacent turbine blades during its movement. The airbag ring 63 serves as a protective medium between the side of the mounting plate 6 and the turbine blades, avoiding the risk of damage to the turbine blade surface caused by the mounting plate 6 during the movement of the grinding head 12. The convex ball part 81 and the rubber ring 83 serve as a protective medium between the dust collection cylinder 8 and the turbine blades, avoiding the risk of damage to the turbine blade surface caused by the dust collection cylinder 8 during the movement of the grinding head 12. This ensures that the grinding device performs non-destructive grinding on the turbine blades.

[0054] Furthermore, during use, by activating the DD motor 92, the angle between the telescopic rod 5 and the dust collection cylinder 8 can be changed by rotating the output end of the DD motor 92 around its axis. This enables adaptive automatic adjustment to changes in the surface structure of the grinding head 12 and the turbine blades, allowing for the adjustment and adaptation to changes in the surface structure of the turbine blades, achieving close-fitting grinding of the turbine blade surface, and achieving grinding of the turbine blade surface without dead angles.

[0055] Meanwhile, the assembly of the telescopic rod 5 with the dust collection cylinder 8 and the mounting plate 6 via the connecting block 9 ensures that the grinding head 12 is rotated by the grinding motor 11, while the brush plate 7 can also clean dust and debris in a timely manner along with the grinding head 12. The internal structure of the dust collection cylinder 8 can also achieve real-time collection and processing of dust and debris. Furthermore, it can ensure that the angle between the telescopic rod 5 and the dust collection cylinder 8 can be adjusted within a small space, allowing the grinding head 12 to smoothly perform grinding operations between turbine blades with different installation densities.

[0056] By adjusting the extension and retraction of the telescopic rod 5, and by adjusting the angle of the telescopic rod 5 around its axis driven by the servo motor 3, the grinding head 12 can not only grind the surface of the current turbine blade, but also freely match the grinding direction to grind the other side of the adjacent turbine blade. By rotating and adjusting the orientation and position of the grinding head 12, this simple action can complete the smooth transition of the grinding head 12 from one turbine blade to another, effectively shortening the overall grinding period and improving the grinding efficiency.

[0057] The telescopic structure of the telescopic rod 5 allows the grinding device to adapt to turbine blades of different sizes and shapes. The telescopic rod 5 is rotatably connected to the base 1 via the servo motor 3 and the robotic arm 2, and has multi-directional adjustment and movement functions. It can adjust the contact force between the grinding head 12 and the turbine blade surface to ensure grinding effect and stability.

[0058] While the grinding motor 11 drives the grinding head 12 to grind the surface of the turbine blades, the vacuum cleaner 4 can also be activated simultaneously to provide suction to the inside of the tubular body 85. This allows the dust and debris generated during the grinding process to be cleaned from the surface of the turbine blades by the brush 7, and then collected into the spiral suction pipe 84 through the air inlet on the surface of the vacuum tube 8. Under the spiral downward guidance of the spiral suction pipe 84, the dust and debris on the surface of the turbine blades are automatically collected and processed.

[0059] The design of brush 7 enables timely cleaning of dirt on the surface of turbine blades, maintaining the cleanliness and stability of the grinding process. This reduces the manpower and time costs of cleaning, improves grinding efficiency, extends the service life of turbine blades, and ensures the efficient and stable operation of aero engines.

[0060] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 6 to 8As shown, the inner side of the vacuum cleaner 8 is hollow, and a bucket tube 85 is installed in the middle of the inner side of the vacuum cleaner 8 for temporarily collecting dust and debris. The bucket tube 85 is fixedly connected to the grinding motor 11. A spiral suction tube 84 is fixedly connected between the bucket tube 85 and the vacuum cleaner 8. The spiral suction tube 84 is connected to the bucket tube 85 in a spiral downward shape. One end of the spiral suction tube 84 passes through the vacuum cleaner 8 and has an air inlet on the outer surface of the vacuum cleaner 8. The air inlet is located between the neck ring 82 and the rubber ring 83. The air inlet is used to suck dust and debris into the spiral suction tube 84 under the guidance of the neck ring 82 and the rubber ring 83.

[0061] In use, the spiral suction tube 84, through the air inlet on the surface of the dust collection cylinder 8, can actively collect dust and debris spirally downwards into the inside of the tube body 85. This prevents dust and debris from accumulating inside the spiral suction tube 84 and effectively guides the downward spiral trajectory of dust and debris, limiting their effective movement space. This prevents dust and debris from splashing or being ejected from the spiral suction tube 84 during collection, effectively avoiding backflow or splashing of dust and debris from the air inlet and eliminating the risk of secondary scratches on the turbine blade surface caused by dust and debris.

[0062] By using the cone 851 inside the hopper tube 85, dust and debris collected and guided into the hopper tube 85 by the spiral downwards can be intercepted and blocked inside the hopper tube 85, preventing dust and debris already collected into the hopper tube 85 from splashing out from the spiral suction tube 84 in other positions. At the same time, the curved surface of the cone 851 can disperse and offset the impact force of the dust and debris collected into the hopper tube 85, avoiding the impact and damage of dust and debris to the internal structure of the hopper tube 85 during collection, and ensuring the service life of the hopper tube 85.

[0063] Furthermore, by utilizing the structural design of the top of the cone 851 extending into the inside of the tower-shaped suction tube 861, the air inlet of the tower-shaped suction tube 861 extending into the tubular body 85 is partially blocked, thereby locally enhancing the air pressure inside the tubular body 85. This strengthens the suction force generated by the tower-shaped suction tube 861 inside the tubular body 85, allowing for better and faster guidance of the dust and debris temporarily collected inside the tubular body 85 to the vacuum cleaner 4 for storage.

[0064] By combining the spiral suction tube 84 with the air inlet, a spiral suction-like airflow can be formed around the dust collection tube 8 and converge towards the center of the dust collection tube 8. This airflow evenly absorbs, gathers, and guides the dust and debris distributed around the mounting plate 6 and brush plate 7 into the inner tube body 85 of the dust collection tube 8. This ensures that the dust and debris are evenly divided into five parts and collected into the tube body 85 from five different directions, preventing the spiral suction tube 84 from becoming clogged in any one direction and ensuring the normal use of the spiral suction tube 84.

[0065] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figure 9 As shown, an inner tube 86 is threadedly installed at the end of the bucket tube body 85 away from the grinding motor 11, and the inner tube 86 is threadedly connected to the guide tube 52. A tower-shaped suction tube 861 is fixedly connected to the middle of the end of the inner tube 86 near the grinding motor 11. A cone 851 is fixedly connected to the middle of the inner side of the bucket tube body 85, and the top of the cone 851 extends into the inner side of the tower-shaped suction tube 861, changing the air intake of the bucket tube body 85 from a circle to an annular shape, increasing the local air force and making the air pressure more concentrated. The tower-shaped suction tube 861 is connected to the spiral suction tube 84 through the bucket tube body 85.

[0066] In use, the spiral suction tube 84, with its downward spiral and centrally converging structure, guides the airflow carrying dust and debris into the tube body 85. Utilizing this central convergence, and combined with the upward curvature of the cone 851, the dust and debris are promptly sucked into the tower-shaped suction tube 861. Guided by the tower-shaped suction tube 861 and the guide tube 52, the dust and debris are collected and stored in the vacuum cleaner 4, achieving separate collection and isolation of dust and debris. This allows the tube body 85, in conjunction with the vacuum cleaner cylinder 8, to continuously absorb, collect, and clean dust and debris.

[0067] During this period, the tower-shaped straw 861, through its own tower-shaped structure design, works in conjunction with the cone 851 to adsorb and collect dust and debris over a large area inside the guide tube 85. Simultaneously, the change in the cross-section of the internal cavity of the tower-shaped straw 861—that is, the internal cavity structure of the tower-shaped straw 861—provides a two-stage guide for the collection of dust and debris: flared adsorption and constricted collection. This two-stage collection and guidance method avoids the problem of individual dust and debris falling off after being sucked into the tower-shaped straw 861, alleviating short-term clogging issues. It also automatically divides excess dust and debris into two separate streams for guidance, preventing concentrated collection and clogging within the tower-shaped straw 861, and avoiding the need for cleaning and maintenance of the tower-shaped straw 861 after long-term use.

[0068] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A self-cleaning turbine blade polishing device for an aero-engine, comprising a base (1), a mechanical arm (2) is rotatably connected to the base (1), characterized in that: A servo motor (3) is installed at the end of the robotic arm (2) away from the base (1), and a telescopic rod (5) is connected to the output end of the servo motor (3). A vacuum cleaner (4) is fixedly installed on the side wall of the robotic arm (2). The telescopic rod (5) is equipped with a mounting plate (6) at the end away from the servo motor (3). A mounting ring (10) is fixedly connected to the top of the mounting plate (6). A dust collection cylinder (8) is fixedly connected to the top of the mounting ring (10). A connecting block (9) is threaded on the dust collection cylinder (8). The connecting block (9) is rotatably installed with the telescopic rod (5). A brush plate (7) is installed at the bottom of the mounting plate (6). A grinding head (12) is installed at the middle of the end of the brush plate (7) away from the mounting plate (6). A disc (13) is connected to the end of the grinding head (12) near the mounting plate (6). A sleeve disc (14) is installed at the middle of the end of the disc (13) near the mounting plate (6). A grinding motor (11) is installed at the end of the sleeve disc (14) near the mounting plate (6) with a pin. The grinding motor (11) is fixedly installed in the middle of the mounting plate (6). The grinding head (12) is rotated and installed with the mounting plate (6) through the cooperation of the disc (13) and the grinding motor (11). The telescopic rod (5) has a connector (53) threaded to one end away from the servo motor (3). The connector (53) has a coil body (51) fixedly connected to one end away from the telescopic rod (5). A guide tube (52) is installed in the middle of the coil body (51). The guide tube (52) is made of flexible material. The guide tube (52) passes through the connector (53), the telescopic rod (5), the servo motor (3), and is connected to the vacuum cleaner (4). A cooler (61) is fixedly installed inside the mounting plate (6), and the cooler (61) is ring-shaped. A cooling plate (62) is connected between the cooler (61) and the grinding motor (11), and the cooling plate (62) is used to cool the grinding motor (11). An air bag ring (63) is fitted on the side of the mounting plate (6). A double ring body (64) is fixedly connected to the side of the mounting plate (6) near the grinding head (12), and the double ring body (64) is made of a cooling material. The brush plate (7) has brushes in three directions: brush area one on the side, brush area two and brush area three facing and away from the mounting plate (6). The sleeve plate (14) is fixedly fitted with a stepped ring frame (71) in a ring-shaped manner. The longitudinal section of the stepped ring frame (71) is stepped and hollow inside. Half of the space inside the stepped ring frame (71) is filled with coolant and the other half is a vacuum. The stepped ring frame (71) is also made of a heat-conducting material.

2. A self-cleaning turbine blade polishing device for an aeroengine as claimed in claim 1, wherein: The brush area one, brush area two and brush area three are installed together on the stepped structure on the outside of the stepped ring frame (71), while the stepped structure on the inside of the stepped ring frame (71) is in close contact with the double ring body (64). The double ring body (64) is used to separate the stepped ring frame (71) from the mounting plate (6). The side of the grinding head (12) near the grinding motor (11) is in close contact with the stepped ring frame (71).

3. A self-cleaning turbine blade polishing device for an aeroengine according to claim 1, wherein: The vacuum cleaner tube (8) has a convex ball part (81) fixedly installed in a circular array on the side near the telescopic rod (5), and the convex ball part (81) is made of rubber material. A neck ring (82) is fixedly fitted on the outer surface of the vacuum cleaner tube (8) in an annular shape. A rubber ring (83) is fitted on the outer surface of the vacuum cleaner tube (8) through the convex ball part (81) and the outer diameter of the rubber ring (83) is larger than the outer diameter of the neck ring (82).

4. A self-cleaning turbine blade polishing device for an aeroengine according to claim 3, wherein: The inner side of the vacuum tube (8) is hollow. A bucket tube (85) is installed in the middle of the inner side of the vacuum tube (8). The bucket tube (85) is fixedly connected to the grinding motor (11). A spiral suction tube (84) is fixedly connected between the bucket tube (85) and the vacuum tube (8). The spiral suction tube (84) is connected to the bucket tube (85) in a spiral downward shape. One end of the spiral suction tube (84) passes through the vacuum tube (8) and an air inlet is opened on the outer surface of the vacuum tube (8). The air inlet is opened between the neck ring (82) and the rubber ring (83).

5. A self-cleaning turbine blade polishing device for an aeroengine according to claim 4, wherein: The end of the tubing body (85) away from the grinding motor (11) is threaded with an inner tube (86), and the inner tube (86) is threadedly connected to the guide tube (52). The middle of the end of the inner tube (86) near the grinding motor (11) is fixedly connected with a tower-shaped suction tube (861). The middle of the inner side of the tubing body (85) is fixedly connected with a cone (851), and the top of the cone (851) extends into the inner side of the tower-shaped suction tube (861). The tower-shaped suction tube (861) is connected to the spiral suction tube (84) through the tubing body (85).

6. A self-cleaning turbine blade polishing device for an aeroengine according to claim 1, wherein: The connecting block (9) is fixedly connected with two sets of disc frames (91) in a centrally symmetrical manner. The connecting block (9) is fixedly mounted with a DD motor (92) through the disc frame (91), and the DD motor (92) is fixedly mounted in the middle of one of the disc frames (91). The output end of the DD motor (92) is installed with the coil body (51) by a pin. The coil body (51) is rotated and installed with the connecting block (9) through the cooperation of the DD motor (92) and the disc frame (91).

7. The self-cleaning aero-engine turbine blade grinding device according to claim 4, characterized in that: The mounting ring (10) has an arc-shaped notch (101) in a circular array on one side near the telescopic rod (5), and the spiral suction tube (84) is fitted and installed with the mounting ring (10) through the arc-shaped notch (101).

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