Turbine blade surface metal plating device and method

Abstract

The invention discloses a surface metal plating device and method for a turbine blade, and belongs to the technical field of plating equipment, the surface metal plating device for the turbine blade comprises a plating pool, a lifting assembly and a lifting plate; the connecting column is vertically and fixedly connected to the lifting plate, and the lower end of the connecting column is fixedly connected with a lifting frame; the plurality of positioning rotating shafts are vertically and rotatably connected to the lifting frame; the rotating assembly is arranged on the lifting frame and used for driving the positioning rotating shafts to axially rotate around the positioning rotating shafts. According to the device, the turbine blade is installed on the positioning rotating shaft, then the lifting plate is driven by the lifting assembly to move downwards into the plating pool, then plating operation can be conducted on the turbine blade, in the plating operation process, the positioning rotating shaft is driven by the rotating assembly to rotate, the turbine blade can rotate, and then plating liquid in the plating pool is stirred; and the plating solution is in a flowing state to a certain degree, so that the plating solution can be uniform, the dispersing capacity is improved, and the plating effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plating equipment, and in particular relates to a device and method for metal plating the surface of a turbine blade. Background Art

[0002] Turbine blades are core components of turbomachinery (such as aircraft engines, gas turbines, and steam turbines), responsible for converting the energy of high-temperature, high-pressure gases into mechanical energy (rotational power). Their design directly impacts engine efficiency, lifespan, and performance. Turbine blades are a crucial component of the turbine section of gas turbine engines. These high-speed rotating blades draw high-temperature, high-pressure airflow into the combustor to maintain engine operation. To ensure stable and long-term operation in these extreme environments, turbine blades are often forged from high-temperature alloys and employ various cooling methods, such as internal airflow cooling, boundary layer cooling, or thermal barrier coatings, to ensure operational reliability. Turbine engine blades are typically subjected to high operating stresses and temperatures, with frequent and drastic fluctuations in these stresses and temperatures. Furthermore, they face corrosion and wear challenges, placing extremely stringent operating conditions on the blades, requiring high machining precision. Furthermore, to improve turbine efficiency, the surface shape of turbine blades is often designed with a complex, twisted, and variable-section curved surface. Therefore, precise turbine blade geometry is essential for turbine machining. The essence of turbine blade geometric modeling is to find a mathematical method to describe the turbine blade surface that can effectively meet the requirements of shape representation and geometric design and facilitate the exchange of shape information and product data.

[0003] During production, turbine blades usually need to be coated with a protective layer on their surface to reduce wear during the rotation and use of the turbine blades. Existing plating equipment generally uses a hanger to hang the turbine blades in the plating equipment, and then the plating liquid in the plating equipment contacts the turbine blades and then plates the turbine blades, so that the surface of the turbine blades is passivated and a protective layer is formed. Since the plating liquid has a certain concentration, proper flow will improve the uniformity and dispersion ability of the plating liquid, thereby improving the plating effect. However, the plating liquid in the current plating equipment is generally static, and the uniformity and dispersion ability of the plating liquid need to be improved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a surface metal plating device and method for turbine blades.

[0005] The technical solution adopted to solve the above technical problems is: a surface metal plating device for turbine blades, including a plating pool, and also including: A lifting assembly provided in the plating tank, wherein the lifting assembly is drivingly connected to a lifting plate; A connecting column vertically fixed to the lifting plate, wherein the lower end of the connecting column is fixedly connected to the lifting frame; A plurality of positioning shafts vertically rotatably connected to the lifting frame; A rotating assembly is provided on the lifting frame, and the rotating assembly is used to drive the plurality of positioning shafts to rotate around their own axes.

[0006] Through the above technical solution, the turbine blades are installed on the positioning shaft, and then the lifting plate is driven down to the plating tank by the lifting assembly, so that the turbine blades can be plated. During the plating operation, the positioning shaft is driven to rotate by the rotating assembly, so that the turbine blades can rotate, thereby stirring the plating liquid in the plating tank, so that the plating liquid presents a certain degree of flow state, so that the plating liquid can be uniform, the dispersion ability is improved, and the plating effect is improved.

[0007] Furthermore, a drain valve is installed on the outer wall of the plating pool.

[0008] Through the above technical solution, the setting of the drain valve can drain the plating liquid in the plating pool after plating. In addition, the plating liquid can be transported to the plating pool through the drain valve for use in plating.

[0009] Furthermore, the lifting assembly includes two lifting cylinders vertically installed on the outer wall of the plating pool, and the ends of the lifting cylinders are fixedly connected to the lifting plate.

[0010] Through the above technical solution, the cylinder rod of the lifting cylinder is shortened, thereby driving the lifting plate to move downward. When the lifting plate moves downward, the lifting frame will move toward the plating pool, thereby allowing the turbine blades to be immersed in the plating liquid in the plating pool. After the plating is completed, the cylinder rod of the lifting cylinder is extended to drive the lifting plate to move upward, causing the lifting frame to move upward, thereby allowing the turbine blades to separate from the plating liquid.

[0011] Furthermore, the rotating assembly includes a rotating column coaxially connected to the connecting column, a driving gear is fixedly sleeved on the lower end of the rotating column, a small-diameter shaft is coaxially fixedly connected to the lower end of the positioning shaft, a driven gear is fixedly sleeved on the lower end of the small-diameter shaft, the driving gear is engaged with multiple driven gears, and the rotating column is driven to rotate by the driving unit.

[0012] Through the above technical solution, the driving unit drives the rotating column to rotate. When the rotating column rotates, the driving gear will rotate synchronously. The driving gear and the driven gear will engage and transmit, thereby driving the small-diameter shaft to rotate. When the small-diameter shaft rotates, it will drive the positioning shaft to rotate, thereby enabling the turbine blades to rotate.

[0013] Furthermore, the driving unit includes a flow-stabilizing float sleeved on the periphery of the connecting column, the flow-stabilizing float and the inner cavity of the plating pool form a sliding fit, the flow-stabilizing float is provided with a through hole for the connecting column to pass freely, the inner cavity of the connecting column is coaxially engaged with a floating portion, the periphery of the floating portion is fixedly connected with a connecting portion, the connecting portion passes through one end of the connecting column and is fixed to the flow-stabilizing float, the periphery of the connecting column is provided with a waist-shaped hole for the connecting portion to pass freely, the lifting plate is vertically installed with a lifting cylinder, and the cylinder rod of the lifting cylinder is fixedly connected to the flow-stabilizing float; The end face of the floating part is provided with a through hole for the rotating column to pass freely, and two balls are rotatably embedded in the wall of the through hole. The periphery of the rotating column is provided with a rolling groove for the balls to engage, and the rolling groove includes a spiral groove and a straight groove from top to bottom, and the balls roll freely in the spiral groove and the straight groove.

[0014] Through the above technical solution, the cylinder rod of the lifting cylinder is extended, thereby driving the flow-stabilizing float to move downward. When the flow-stabilizing float moves downward, the ball will roll from the spiral groove to the straight groove. When the ball rolls in the spiral groove, the ball will squeeze the inner wall of the spiral groove, thereby enabling the rotating column to rotate and drive the driving gear to rotate. Then, through the meshing transmission of the driving gear and the driven gear, the positioning shaft can be driven to rotate. When the ball rolls from the spiral groove to the straight groove, the flow-stabilizing float will move downward without driving the positioning shaft to rotate. When the flow-stabilizing float moves downward, it will contact the liquid surface of the plating solution and generate pressure on the liquid surface, so that the liquid surface can tend to calm down, thereby enabling the plating liquid in the plating tank to quickly and steadily after stirring, preventing the plating solution from continuing to flow and affecting the plating.

[0015] Furthermore, a vent is provided on the surface of the flow-stabilizing float, a hollow flange cylinder is connected to the surface of the flow-stabilizing float, the bottom of the hollow flange cylinder is closed and a plurality of vent grooves are provided, a sliding plug is coaxially engaged in the hollow flange cylinder, the sliding plug slides freely in the hollow flange cylinder, and an end surface of the sliding plug is provided with a vent hole staggered with the vent groove; A hollow ring is fixedly installed on the upper end portion of the hollow flange cylinder. A spring is installed in the hollow flange cylinder. Two ends of the spring in the direction of elastic force elastically press against the sliding plug and the hollow ring respectively.

[0016] Through the above technical solution, when the flow-stabilizing float moves downward, the air in the plating pool will be squeezed, and the air will be able to pass through the air-permeable groove to generate a thrust on the sliding plug, causing the sliding plug to move upward. When the sliding plug moves upward, the air will be able to enter the hollow flange cylinder from the air-permeable groove, and then be discharged from the air hole of the sliding plug, so that the flow-stabilizing float can discharge a large part of the air in the process of stabilizing the liquid level of the plating liquid in the plating pool, so as to avoid the air affecting the contact between the flow-stabilizing float and the liquid level of the plating liquid, and also to avoid the generation of large bubbles in the plating liquid in the plating pool.

[0017] Furthermore, the positioning shaft is coaxially provided with a sliding hole, a telescopic column is inserted into the sliding hole, a tapered portion is coaxially fixed to the upper end of the telescopic column, the outer diameter of the tapered portion decreases from top to bottom, and the upper end of the positioning shaft is coaxially provided with a tapered hole that matches the tapered portion; The periphery of the positioning shaft is provided with a plurality of deformation notches, the deformation notches are connected with the tapered hole and the sliding hole, and the lifting frame is provided with an expansion component, which is used to drive the positioning shaft to generate elastic expansion deformation when the driven gear rotates.

[0018] Through the above technical solution, when the driven gear rotates, the expansion assembly drives the telescopic column to move downward, causing the conical portion to move downward in the tapered hole and generate an extrusion force on the inner wall of the tapered hole, causing the positioning shaft to produce an elastic expansion deformation along its radial outer side, thereby enabling the positioning shaft to press against the turbine blades, so that when the turbine blades stir the plating liquid, the flow of the plating liquid impacts the turbine blades, without causing the turbine blades to move upward.

[0019] Furthermore, the expansion assembly includes a fixing ring mounted on the lower end of the telescopic column, the lower end of the telescopic column is rotatably connected to the fixing ring, the lower end face of the driven gear is fixed with an arc-shaped protrusion, the upper end face of the fixing ring is fixed with a protrusion that cooperates with the arc-shaped protrusion, the lifting frame is vertically fixed with a lower extension rod, the lower extension rod is mounted with a floating plate, the floating plate slides freely on the lower extension rod, and the fixing ring is rotatably connected to the floating plate.

[0020] Through the above technical solution, when the driven gear rotates, the arc-shaped protrusion will contact the protrusion. When the arc-shaped protrusion slides to the top of the protrusion, it will generate a downward squeezing force on the protrusion, so that the protrusion drives the fixing ring and the telescopic column to move downward, and the telescopic column drives the conical part to move downward, thereby causing the positioning shaft to produce elastic expansion deformation.

[0021] Furthermore, a limiting nut is fixedly mounted on the lower extension rod, and the limiting nut is used to limit the upward movement of the floating plate.

[0022] Through the above technical solution, the upward movement of the floating plate is limited by the limiting nut, thereby preventing the tapered portion from being exposed from the top surface of the positioning shaft.

[0023] A method for metal plating the surface of a turbine blade, applied to the surface metal plating device described above, comprises: The turbine blade is mounted on the positioning shaft, and the lifting plate is driven downward by the lifting assembly so that the lifting plate drives the turbine blade to move downward into the plating tank, and the plating mechanism of the plating tank is started to start plating the surface of the turbine blade; During the plating process, the rotating assembly drives the positioning shaft to rotate around its own axis, so that the turbine blades can rotate and stir the plating liquid in the plating tank, thereby making the plating liquid in a certain flow state.

[0024] Through the above technical solution, the positioning shaft is driven to rotate by the rotating component, so that the turbine blades can rotate, thereby stirring the plating liquid in the plating tank, so that the plating liquid presents a certain degree of flow state, thereby making the plating liquid uniform, improving the dispersion ability, and thus improving the plating effect.

[0025] The beneficial effects of the present invention are as follows: 1. In the present invention, the turbine blade is mounted on a positioning shaft, and the lifting plate is driven by a lifting assembly to move downward into the plating tank, so that the turbine blade can be plated. During the plating operation, the positioning shaft is driven to rotate by a rotating assembly, so that the turbine blade can rotate, thereby stirring the plating solution in the plating tank, so that the plating solution presents a certain degree of flow, thereby making the plating solution uniform, improving the dispersion ability, and thus improving the plating effect; 2. In the present invention, the cylinder rod of the lifting cylinder is extended, thereby driving the flow-stabilizing float to move downward. When the flow-stabilizing float moves downward, the ball will roll from the spiral groove to the straight groove. When the ball rolls in the spiral groove, the ball will squeeze the inner wall of the spiral groove, thereby enabling the rotating column to rotate and drive the driving gear to rotate. The driving gear and the driven gear are meshed and driven to drive the positioning shaft to rotate. When the ball rolls from the spiral groove to the straight groove, the flow-stabilizing float will move downward without driving the positioning shaft to rotate. When the flow-stabilizing float moves downward, it will contact the liquid surface of the plating solution and generate pressure on the liquid surface, so that the liquid surface can tend to be calm, thereby enabling the plating solution in the plating tank to quickly and steadily after being stirred, thereby preventing the plating solution from continuing to flow and affecting the plating; 3. In the present invention, when the flow-stabilizing float moves downward, the air in the plating pool will be squeezed, and the air can pass through the air-permeable groove to generate a thrust on the sliding plug, causing the sliding plug to move upward. When the sliding plug moves upward, the air can enter the hollow flange cylinder from the air-permeable groove and then be discharged from the air hole of the sliding plug. In the process of stabilizing the liquid level of the plating liquid in the plating pool, the flow-stabilizing float can discharge a large part of the air to avoid the air affecting the contact between the flow-stabilizing float and the liquid level of the plating liquid, and also to avoid the generation of large bubbles in the plating liquid in the plating pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 1 is a schematic diagram of the overall structure of a surface metal plating device for a turbine blade according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the positional relationship from another perspective; Figure 3 This is a schematic diagram of the positional relationship among the flow stabilizing float, the connecting column and the plurality of turbine blades after assembly in the present invention; Figure 4 yes Figure 3 A schematic diagram of the positional relationship from another perspective; Figure 5 This is a schematic diagram of the positional relationship among the flow stabilizing float, the connecting column and the lifting frame after assembly in the present invention; Figure 6 yes Figure 5 Schematic diagram of the positional relationship of the middle part structure after it is cut open; Figure 7 yes Figure 6 A magnified schematic diagram of the local structure at point A; Figure 8 yes Figure 6 A magnified schematic diagram of the local structure at point B in the middle; Figure 9 It is a structural schematic diagram of the hollow flange cylinder of the present invention; Figure 10 yes Figure 9 Schematic cross-sectional view of the structure; Figure 11 yes Figure 9 Schematic diagram of the exploded structure; Figure 12 This is a schematic diagram of the positional relationship between the positioning shaft and the small-diameter shaft after assembly in the present invention; Figure 13 yes Figure 12 Schematic cross-sectional view of the structure; Figure 14 It is a structural schematic diagram of the rotating column in the present invention.

[0027] Figure numerals: 1. drain valve; 2. lifting cylinder; 3. plating pool; 4. turbine blade; 5. flow stabilizing float; 6. lifting cylinder; 7. lifting plate; 8. hollow flange cylinder; 9. connecting column; 10. driving gear; 11. lower extension rod; 12. lifting frame; 13. floating plate; 14. driven gear; 15. small diameter shaft; 16. air vent; 17. positioning shaft; 18. rotating column; 19. floating part; 20. ball; 21. tapered part; 22. telescopic column; 23. protrusion; 24. fixing ring; 25. arc-shaped protrusion; 26. large diameter section; 27. hollow ring; 28. spring; 29. air vent; 30. sliding plug; 31. air vent groove; 32. deformation notch; 33. tapered hole; 34. sliding hole; 35. straight groove; 36. spiral groove. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] like Figures 1-14 As shown, this embodiment provides: a surface metal plating device for turbine blades, comprising a plating pool 3 with an open top, and a plating mechanism installed in the plating pool 3. Drain valves 1 are installed on both sides of the plating pool 3, one drain valve 1 is connected to an external plating liquid delivery system through a pipeline, so that the plating liquid delivery system can deliver the plating liquid from the drain valve 1 to the plating pool 3, and the other drain valve 1 is connected to an external collecting device through a pipeline, and the collecting device is used to collect the waste plating liquid in the plating pool 3. Ear plates are fixed to the outer walls of the opposite sides of the plating pool 3, and a lifting cylinder 2 is vertically installed on each ear plate. The cylinder rod ends of the two lifting cylinders 2 are fixedly connected to a lifting plate 7. The lifting plate 7 is located above the mouth of the plating pool 3 and is horizontally arranged. A connecting column 9 is vertically fixed on the lifting plate 7. The connecting column 9 is hollow inside. A lifting frame 12 is fixed to the lower end of the connecting column 9. A plurality of positioning shafts 17 are installed on the end of the lifting frame 12 away from the connecting column 9. The positioning shafts 17 are vertically rotatably connected to the lifting frame 12 through bearings. The plurality of positioning shafts 17 are arranged in an array along the axial direction of the connecting column 9. The outer diameter of the positioning shaft 17 is slightly smaller than the diameter of the shaft hole of the turbine blade 4, so that the shaft hole of the turbine blade 4 can be smoothly sleeved on the positioning shaft 17. The lower end of the connecting column 9 is coaxially connected to the rotating column 18 through a bearing, and the upper end of the rotating column 18 penetrates the inner cavity of the connecting column 9, and the lower end of the rotating column 18 is fixedly sleeved with a driving gear 10, and the lower end of the positioning shaft 17 is coaxially fixed with a small-diameter shaft 15, and the lower end of the small-diameter shaft 15 is fixedly sleeved with a driven gear 14. The driving gear 10 is engaged with multiple driven gears 14. The peripheral edge of the connecting column 9 is covered with a flow stabilizing float 5. The outer contour of the flow stabilizing float 5 matches the contour of the inner cavity of the plating pool 3, and the flow stabilizing float 5 and the inner cavity of the plating pool 3 form a sliding fit. , the flow-stabilizing float 5 is provided with a through hole for the connecting column 9 to pass freely, the inner cavity of the connecting column 9 is coaxially engaged with a floating portion 19, the periphery of the floating portion 19 is fixedly connected with a connecting portion, the connecting portion passes through one end of the connecting column 9 and is fixed to the flow-stabilizing float 5, and the periphery of the connecting column 9 is provided with a waist-shaped hole for the connecting portion to pass freely, the lifting plate 7 is vertically installed with a lifting cylinder 6, the cylinder rod of the lifting cylinder 6 is fixedly connected to the flow-stabilizing float 5, and the cylinder rod of the lifting cylinder 6 is extended, thereby driving the flow-stabilizing float 5 to move downward, and driving the floating portion 19 to move downward through the connecting portion; The end surface of the floating portion 19 is provided with a through-hole for the free passage of the rotating column 18. Two balls 20 are rotatably embedded in the wall of the through-hole. The periphery of the rotating column 18 is provided with a rolling groove for the engagement of the balls 20. The rolling grooves include, from top to bottom, a spiral groove 36 and a straight groove 35. The balls 20 roll freely in the spiral groove 36 and the straight groove 35. When the floating portion 19 moves downward, the balls 20 roll in the spiral groove 36 and the straight groove 35. When the balls 20 roll in the spiral groove 36, the inner wall of the spiral groove 36 is squeezed by the balls 20, thereby causing the rotating column 18 to rotate. The surface of the flow-stabilizing float 5 is provided with a vent 16, the upper surface of the flow-stabilizing float 5 is connected with a hollow flange cylinder 8, the periphery of the hollow flange cylinder 8 is provided with a large diameter section 26, the large diameter section 26 is installed on the surface of the flow-stabilizing float 5 by screws, the bottom of the hollow flange cylinder 8 is closed and a plurality of vent grooves 31 are provided, a sliding plug 30 is coaxially engaged in the hollow flange cylinder 8, the sliding plug 30 slides freely in the hollow flange cylinder 8, the end face of the sliding plug 30 is provided with a vent hole 29 staggered with the vent groove 31, the upper end portion of the hollow flange cylinder 8 is fixedly installed with a hollow ring 27, the hollow flange cylinder 8 is provided with a plurality of vent grooves 31, and the hollow flange cylinder 8 is provided with a plurality of vent grooves 31. A spring 28 is installed in the flange cylinder 8. The two ends of the spring 28 in the elastic direction elastically press against the sliding plug 30 and the hollow ring 27 respectively. The spring 28 generates an elastic pressing force on the sliding plug 30. When the flow stabilizing float 5 moves downward in the plating pool 3, it squeezes the air in the plating pool 3, so that the air generates an upward thrust on the sliding plug 30 through the vent groove 31, and the end face of the sliding plug 30 is away from the vent groove 31, so that the air can enter the hollow flange cylinder 8 through the vent groove 31, and then be discharged to the outside of the hollow flange cylinder 8 through the vent hole 29 on the sliding plug 30; In addition, the positioning shaft 17 is coaxially provided with a sliding hole 34, in which a telescopic column 22 is inserted. The upper end of the telescopic column 22 is coaxially fixed with a tapered portion 21. The outer diameter of the tapered portion 21 decreases from top to bottom. The upper end of the positioning shaft 17 is coaxially provided with a tapered hole 33 that matches the tapered portion 21. The periphery of the positioning shaft 17 is provided with a plurality of deformation notches 32. The deformation notches 32 are connected with the tapered hole 33 and the sliding hole 34. The lower end of the telescopic column 22 is provided with a fixing ring 24. The lower end of the telescopic column 22 is rotatably connected to the fixed ring 24. The lower end surface of the driven gear 14 is fixed with an arc-shaped protrusion 25. The upper end surface of the fixed ring 24 is fixed with a protrusion 23 that cooperates with the arc-shaped protrusion 25. The lifting frame 12 is vertically fixed to the lower extension rod 11. The lower extension rod 11 is equipped with a floating plate 13. The floating plate 13 slides freely on the lower extension rod 11. The fixed ring 24 is rotatably connected to the floating plate 13. When the driven gear 14 rotates, the arc-shaped protrusion 25 and the protrusion 23 are When the arc-shaped protrusion 25 contacts and slides to the top of the protrusion 23, it will generate a downward squeezing force on the protrusion 23, so that the protrusion 23 drives the fixing ring 24 and the telescopic column 22 to move downward, so that the telescopic column 22 drives the tapered portion 21 to move downward. The telescopic column 22 moves downward, so that the tapered portion 21 moves downward in the tapered hole 33 and generates a squeezing force on the inner wall of the tapered hole 33, so that the positioning shaft 17 produces elastic expansion deformation along its radial outer side, thereby enabling the positioning shaft 17 to press against the inner wall of the shaft hole of the turbine blade 4, so that when the turbine blade 4 stirs the plating liquid, the flow of the plating liquid impacts the turbine blade 4, which will not cause the turbine blade 4 to move upward. In addition, a limit nut (not shown in the figure) is fixedly mounted on the lower extension rod 11. The limit nut is used to limit the upward movement of the floating plate 13. The limit nut limits the upward movement of the floating plate 13 to prevent the tapered portion 21 from being exposed to the top surface of the positioning shaft 17.

[0030] The working principle of this embodiment is as follows: The external plating liquid delivery system delivers the plating liquid from the drain valve 1 to the plating tank 3 through the drain valve 1, so that the plating liquid in the plating tank 3 reaches a fixed liquid level, the shaft hole of the turbine blade 4 is sleeved on the positioning shaft 17, and then the lifting cylinder 2 is started. The cylinder rod of the lifting cylinder 2 is shortened and drives the lifting plate 7 to move downward, so that the lifting plate 7 drives the lifting frame 12 and the turbine blade 4 to move downward, thereby immersing the turbine blade 4 in the plating liquid in the plating tank 3. Then, the chemical components in the plating liquid begin to passivate the surface of the turbine blade 4, and then form a passivation layer on the surface of the turbine blade 4, so that the turbine blade 4 can be plated; After plating for a certain period of time, the lifting cylinder 6 is started, and the cylinder rod of the lifting cylinder 6 is extended, thereby driving the flow-stabilizing float 5 to move downward. When the flow-stabilizing float 5 moves downward, the ball 20 will roll from the spiral groove 36 to the straight groove 35. When the ball 20 rolls in the spiral groove 36, the ball 20 will squeeze the inner wall of the spiral groove 36, thereby enabling the rotating column 18 to rotate and drive the driving gear 10 to rotate. The meshing transmission between the driving gear 10 and the driven gear 14 can drive the positioning shaft 17 to rotate. When the driven gear 14 rotates, the arc-shaped protrusion 25 will contact the protrusion 23. When the arc-shaped protrusion 25 slides to the top of the protrusion 23, it will generate a downward squeezing force on the protrusion 23, so that the protrusion 23 drives the fixing ring 24 and the telescopic column 22 to move downward. The movement causes the telescopic column 22 to drive the tapered portion 21 to move downward, and the telescopic column 22 moves downward, causing the tapered portion 21 to move downward in the tapered hole 33 and generate an extrusion force on the inner wall of the tapered hole 33, so that the positioning shaft 17 produces an elastic expansion deformation along its radial outer side, thereby enabling the positioning shaft 17 to press against the inner wall of the shaft hole of the turbine blade 4, thereby preventing the turbine blade 4 from separating from the positioning shaft 17. At the same time, due to the large pressing force, when the positioning shaft 17 rotates (the rotation speed is low), the turbine blade 4 can rotate synchronously with the positioning shaft 17. When the turbine blade 4 rotates, on the one hand, the position of each blade of the turbine blade 4 is adjusted to achieve a better plating effect. On the other hand, the rotation of the turbine blade 4 will stir the plating liquid in the plating tank 3, so that the plating liquid is uniform and has a better dispersion effect. Since the plating solution needs to be stabilized in a relatively short time after being stirred, that is, the liquid level of the plating solution will not fluctuate, the lifting cylinder 6 is continued to be started, the cylinder rod of the lifting cylinder 6 continues to extend, and the flow-stabilizing float 5 is driven to continue to move downward, so that the ball 20 begins to roll from the spiral groove 36 to the straight groove 35. When the ball 20 rolls from the spiral groove 36 to the straight groove 35, the flow-stabilizing float 5 will be moved downward without driving the positioning shaft 17 to rotate. When the flow-stabilizing float 5 moves downward, it will contact the liquid level of the plating solution and generate pressure on the liquid level, so that the liquid level can be calmed, thereby making the plating solution in the plating tank 3 quickly and steadily after being stirred, preventing the plating solution from continuing to flow and affecting the plating. The air in the air vents 31 are pushed out of the air vents 31 and out of the air vents 39. The air in the air vents 39 are pushed out of the air vents 39. The air in the air vents 39 are pushed out of the air vents 39. After the plating is completed, the lifting cylinder 2 is started, and the cylinder rod of the lifting cylinder 2 is extended, thereby driving the lifting plate 7 to move upward. When the lifting plate 7 moves upward, it will drive the lifting frame 12 and the turbine blade 4 to move upward. After rising to the right position, the lifting cylinder 6 is started again, and the cylinder rod of the lifting cylinder 6 is shortened, and the flow stabilizing float 5 moves upward, thereby making the flow stabilizing float 5 away from the turbine blade 4, and at the same time making the arc-shaped protrusion 25 out of contact with the protrusion 23. Since the positioning shaft 17 has the ability to restore its own deformation after elastic deformation, the tapered portion 21 will move upward and reset, so that the positioning shaft 17 is transformed from elastic expansion deformation to elastic contraction deformation, so that the staff can remove the turbine blade 4 from the positioning shaft 17.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A surface metal plating device for turbine blades, comprising a plating pool (3), characterized in that: Also includes: A lifting assembly provided in the plating tank (3), wherein the lifting assembly is drivingly connected to a lifting plate (7); A connecting column (9) vertically fixed to the lifting plate (7), wherein a lifting frame (12) is fixed to the lower end of the connecting column (9); A plurality of positioning shafts (17) vertically rotatably connected to the lifting frame (12); A rotating assembly is provided on the lifting frame (12), and the rotating assembly is used to drive the plurality of positioning shafts (17) to rotate around their own axes.

2. The surface metal plating device for turbine blades according to claim 1, characterized in that: A drain valve (1) is installed on the outer wall of the plating pool (3).

3. The surface metal plating device for turbine blades according to claim 1, characterized in that: The lifting assembly comprises two lifting cylinders (2) vertically mounted on the outer wall of the plating pool (3), and the ends of the lifting cylinders (2) are fixedly connected to the lifting plate (7).

4. The surface metal plating device of a turbine blade according to claim 1, characterized in that The rotating assembly includes a rotating column (18) coaxially connected to the connecting column (9), a driving gear (10) is fixedly sleeved on the lower end of the rotating column (18), a small-diameter shaft (15) is coaxially fixedly connected to the lower end of the positioning shaft (17), a driven gear (14) is fixedly sleeved on the lower end of the small-diameter shaft (15), the driving gear (10) is meshed with a plurality of the driven gears (14), and the rotating column (18) is driven to rotate by a driving unit.

5. The surface metal plating device for turbine blades according to claim 4, characterized in that: The driving unit includes a flow stabilizing float (5) sleeved on the periphery of the connecting column (9), the flow stabilizing float (5) and the inner cavity of the plating pool (3) form a sliding fit, the flow stabilizing float (5) is provided with a through hole for the connecting column (9) to pass freely, the inner cavity of the connecting column (9) is coaxially engaged with a floating portion (19), the periphery of the floating portion (19) is fixed with a connecting portion, one end of the connecting portion passes through the connecting column (9) and is fixed to the flow stabilizing float (5), the periphery of the connecting column (9) is provided with a waist-shaped hole for the connecting portion to pass freely, the lifting plate (7) is vertically installed with a lifting cylinder (6), and the cylinder rod of the lifting cylinder (6) is fixed to the flow stabilizing float (5); The end surface of the floating portion (19) is provided with a through hole for the rotating column (18) to pass freely, and two balls (20) are rotatably embedded in the wall of the through hole. The periphery of the rotating column (18) is provided with a rolling groove for the balls (20) to engage, and the rolling groove includes a spiral groove (36) and a straight groove (35) from top to bottom, and the balls (20) roll freely in the spiral groove (36) and the straight groove (35).

6. The surface metal plating device for turbine blades according to claim 5, characterized in that: The surface of the flow stabilizing float (5) is provided with a vent (16), the upper surface of the flow stabilizing float (5) is connected to a hollow flange cylinder (8), the bottom of the hollow flange cylinder (8) is closed and provided with a plurality of vent grooves (31), a sliding plug (30) is coaxially engaged in the hollow flange cylinder (8), the sliding plug (30) slides freely in the hollow flange cylinder (8), and an end surface of the sliding plug (30) is provided with a vent hole (29) staggered with the vent groove (31); A hollow ring (27) is fixedly mounted on the upper end of the hollow flange cylinder (8), and a spring (28) is mounted inside the hollow flange cylinder (8). Both ends of the spring (28) in the elastic force direction elastically press against the sliding plug (30) and the hollow ring respectively.

7. The surface metal plating device for turbine blades according to claim 4, characterized in that: The positioning shaft (17) is coaxially provided with a sliding hole (34), a telescopic column (22) is inserted into the sliding hole (34), a conical portion (21) is coaxially fixed to the upper end of the telescopic column (22), the outer diameter of the conical portion (21) decreases from top to bottom, and the upper end of the positioning shaft (17) is coaxially provided with a conical hole (33) that matches the conical portion (21); The periphery of the positioning shaft (17) is provided with a plurality of deformation notches (32), the deformation notches (32) are connected with the tapered hole (33) and the sliding hole (34), and the lifting frame (12) is provided with an expansion component, which is used to drive the positioning shaft (17) to generate elastic expansion deformation when the driven gear (14) rotates.

8. The surface metal plating device for turbine blades according to claim 7, characterized in that: The expansion assembly includes a fixing ring (24) sleeved on the lower end of the telescopic column (22), the lower end of the telescopic column (22) is rotatably connected to the fixing ring (24), the lower end surface of the driven gear (14) is fixed with an arc-shaped protrusion (25), the upper end surface of the fixing ring (24) is fixed with a protrusion (23) that cooperates with the arc-shaped protrusion (25), the lifting frame (12) is vertically fixed with a lower extension rod (11), the lower extension rod (11) is sleeved with a floating plate (13), the floating plate (13) slides freely on the lower extension rod (11), and the fixing ring (24) is rotatably connected to the floating plate (13).

9. The surface metal plating device for turbine blades according to claim 8, characterized in that: A limiting nut is fixedly mounted on the lower extension rod (11), and the limiting nut is used to limit the upward movement of the floating plate (13).

10. A method for metal plating the surface of a turbine blade, applied to the surface metal plating device according to any one of claims 1 to 9, characterized in that: include: The turbine blade (4) is mounted on the positioning shaft (17), and the lifting plate (7) is driven downward by the lifting assembly, so that the lifting plate (7) drives the turbine blade (4) to move downward into the plating pool (3), and the plating mechanism of the plating pool (3) is started to begin plating the surface of the turbine blade (4); During the plating process, the rotating assembly drives the positioning shaft (17) to rotate around the axial direction of the positioning shaft (17), so that the turbine blades (4) can rotate and stir the plating liquid in the plating pool (3), thereby causing the plating liquid to be in a certain flow state.

Images