A variable casting device for components of an offshore wind turbine

Abstract

The present invention belongs to the technical field of component casting, and discloses a variable casting device for components of an offshore wind turbine, including a casting table. A first hydraulic rod is fixedly connected to the middle of the top end of the casting table, and a pressure injection piston is fixedly connected to the output end of the pressure injection piston. A funnel is fixedly connected to one side of the top of the casting table. By starting the drive motor to push the threaded rod and the piston plate to move, at this time, the first rotating shaft rotates to synchronously drive the first connecting rod to rotate. The rotation of the first connecting rod drives the circular plate to rotate. The rotation of the circular plate drives the sliding column and the sealing plate to move to both sides through the sliding groove, and the liquid aluminum flows out and flows into the forming chamber through the second diversion pipe for secondary input, thereby avoiding the situation of volume reduction and insufficient thickness caused by cooling shrinkage after the casting is formed, thereby improving the dimensional accuracy, reducing the need for subsequent processing, enhancing the structural integrity, and reducing the risk of cracks and deformation.

Description

Technical Field

[0001] The present invention belongs to the technical field of component casting, and specifically relates to a variable casting device for components of an offshore wind turbine. Background Art

[0002] Casting is a process of melting metal into a liquid and then pouring it into a mold, and obtaining a casting with a predetermined shape, size and performance after cooling and solidification. It is one of the basic processes of modern mechanical manufacturing industry, and has the characteristics of wide adaptability and low cost, and is suitable for the production of parts with complex shapes and parts that are difficult to machine; in casting, casting is divided into sand casting, mold casting, investment casting, die casting, centrifugal casting, permanent mold casting, lost foam casting, continuous casting, etc., among which die casting is a metal casting process that uses a mold cavity to apply high pressure to molten metal to form castings with complex shapes and thin-walled cross-sections.

[0003] First, in the existing process of casting components of an offshore wind turbine, solid aluminum is usually heated to become liquid aluminum and then filled into a mold for cooling and forming. During this process, the mass per unit volume decreases. After the casting is formed, due to the increase in the distance between molecules, the number of aluminum atoms per unit volume decreases, resulting in a reduction in the overall volume, which may cause insufficient thickness of the casting, making the casting not meet the processing standards during the processing process, affecting the processing effect. Moreover, during the casting process, the liquid aluminum will shrink when cooling, which may cause voids or defects inside the casting, thus affecting the forming effect of the casting and the use of the casting. Summary of the Invention

[0004] The purpose of the present invention is to provide a variable casting device for components of an offshore wind turbine to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: a variable casting device for components of an offshore wind turbine, comprising a casting table, a first hydraulic rod is fixedly connected to the middle of the top of the casting table, a injection piston is fixedly connected to the output end of the first hydraulic rod, a funnel is fixedly connected to one side of the top of the casting table, a first diversion pipe is fixedly connected to the bottom of the funnel, the first diversion pipe is fixedly connected to the casting table, a diversion side pipe is fixedly communicated with the outer surface of the first diversion pipe, a driving motor is fixedly connected to the inside of the casting table, a mounting sleeve is fixedly connected to the output shaft of the driving motor, one end of the diversion side pipe is fixedly communicated with the mounting sleeve, a first rotating shaft is fixedly connected to the output end of the driving motor, a first internal thread gear is fixedly connected to the outside of the first rotating shaft, a first gear is meshed with one side inside the first internal thread gear, a second rotating shaft is fixedly connected to the middle of one of the first gears, a connecting block is movably sleeved at one end of one of the second rotating shafts, the connecting block is fixedly connected to the mounting sleeve, a second internal thread gear is arranged on one side of one of the connecting blocks, a first support plate is arranged at the bottom of the second internal thread gear, the first support plate is fixedly connected to the mounting sleeve, a threaded sleeve is fixedly connected to the bottom of the second internal thread gear, a threaded rod is threadedly connected inside the threaded sleeve, a piston plate is fixedly connected to the bottom of the threaded rod, an opening and closing assembly is arranged inside the mounting sleeve, and an ejection assembly is arranged on the top of the casting table.

[0006] Preferably, the opening and closing assembly includes a plurality of first connecting rods, all of the first connecting rods are fixedly connected to the first internal thread gear, a circular plate is fixedly connected to one end of the plurality of first connecting rods, two chutes are respectively opened on both sides inside the circular plate, two sliding columns are respectively slidably connected inside the two chutes, sealing plates are fixedly connected to the bottoms of the two sliding columns, the sealing plates are slidably connected to the casting table, and a second diversion pipe is fixedly connected to the bottom of the mounting sleeve.

[0007] Preferably, the ejection assembly includes a plurality of second connecting rods, the plurality of second connecting rods are fixedly connected to the casting table, and a shaping mold is fixedly connected to the bottom of the second connecting rods.

[0008] Preferably, the ejection assembly further includes a second hydraulic rod, the second hydraulic rod is fixedly connected to the middle section inside the casting table, a moving mold is fixedly connected to the output end of the second hydraulic rod, a second support plate is fixedly connected to the inner top of the casting table, the moving mold is arranged on the top of the second support plate, the output end of the second hydraulic rod respectively penetrates through the casting table and the second support plate, a plurality of support rods are slidably connected to the periphery inside the moving mold, all of the support rods are fixedly connected to the second support plate, and a plurality of top blocks are respectively fixedly connected to the tops of the plurality of support rods.

[0009] Preferably, the two sets of the first gears are meshed with each other and staggered up and down, and are rotatably mounted on the top of the connecting block. The first support plate is of a circular ring structure and does not contact the threaded sleeve.

[0010] Preferably, the lower end inside the mounting sleeve is a rectangular chamber. The length and width of the piston plate and the lower rectangular structure of the mounting sleeve are equal. The upper end inside the mounting sleeve is a circular chamber.

[0011] Preferably, a pressing cavity is formed in the middle of the shaping die. The diameter of the pressing cavity is the same as that of the injection piston, and the positions of the pressing cavity and the injection piston correspond to each other.

[0012] Preferably, the second diversion pipe and the first diversion pipe both extend into the inside of the shaping die and are connected to the internal die forming cavity thereof.

[0013] Preferably, after the top block is lifted by the moving die and cooperates with the shaping die, the top surface of the top block is flush with the top surface of the moving die. A plurality of triangular grooves corresponding to the top block are formed on the top of the moving die.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. By starting the driving motor to push the threaded rod and the piston plate to move, the first rotating shaft rotates synchronously to drive the first connecting rod to rotate. The rotation of the first connecting rod drives the circular plate to rotate. The rotation of the circular plate drives the sliding column and the sealing plate to move to both sides through the sliding groove. The liquid aluminum flows out and flows into the forming chamber through the second diversion pipe for secondary input, thereby avoiding the volume reduction and insufficient thickness caused by the cooling shrinkage of the casting after forming, thus improving the dimensional accuracy, reducing the subsequent processing requirements, enhancing the structural integrity, and reducing the risk of cracks and deformation. At the same time, the secondary input of liquefied aluminum for casting can also avoid the occurrence of voids or defects inside the casting, thereby affecting the forming effect of the casting and the use of the casting.

[0016] 2. By starting the driving motor to drive the first connecting rod to rotate and drive the circular plate to rotate, the circular plate rotates to drive the sliding column and the sealing plate to move to both sides and open through the sliding groove. When the sliding column and the sealing plate move to both sides, the opening and closing speed is controlled by the driving motor. When the liquefied aluminum is input for the second time, the flow rate can be better controlled, so as to meet the needs of different casting processes and products. At the same time, it can be adjusted according to the casting, making the casting more perfect, improving the product forming effect, and improving the work efficiency.

[0017] 3. After the casting is completely cooled and formed, the second hydraulic rod is activated to drive the moving die to descend. At this time, the formed casting will fit the surface of the moving die. As the moving die descends, the top block and the support rod will slowly move away from the inside of the triangular groove. During the continuous descent of the moving die, the formed casting will be ejected by the top block, thereby improving the casting efficiency and reducing the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a cross-sectional view of the casting table of the present invention;

[0020] Figure 3 is a schematic diagram of the structure of the diversion side pipe of the present invention;

[0021] Figure 4 is a cross-sectional view of the mounting sleeve of the present invention;

[0022] Figure 5 is a cross-sectional view of the first internal thread gear of the present invention;

[0023] Figure 6 is a schematic diagram of the structure of the circular plate of the present invention;

[0024] Figure 7 is a schematic diagram of the structure of the ejection assembly of the present invention;

[0025] Figure 8 is a cross-sectional view of the shaping die of the present invention;

[0026] Figure 9 is a schematic diagram of the structure of the first gear of the present invention.

[0027] In the figure: 1, casting table; 2, first hydraulic rod; 3, injection piston; 4, funnel; 5, first diversion pipe; 501, diversion side pipe; 6, drive motor; 7, mounting sleeve; 8, first rotating shaft; 9, first internal thread gear; 10, first gear; 11, second rotating shaft; 12, connecting block; 13, second internal thread gear; 14, first support plate; 15, threaded sleeve; 16, threaded rod; 17, piston plate; 18, first connecting rod; 19, circular plate; 20, chute; 21, sliding column; 22, sealing plate; 23, second connecting rod; 24, shaping die; 25, second hydraulic rod; 26, second support plate; 27, moving die; 28, support rod; 29, top block; 30, second diversion pipe. DETAILED DESCRIPTION OF THE INVENTION

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] As Figures 1 to 8 shown, the embodiment of the present invention provides a variable casting device for parts of an offshore wind turbine, including a casting table 1. In the middle of the top of the casting table 1, a first hydraulic rod 2 is fixedly connected. The output end of the first hydraulic rod 2 is fixedly connected with a injection piston 3. On one side of the top of the casting table 1, a funnel 4 is fixedly connected. The bottom of the funnel 4 is fixedly connected with a first diversion pipe 5. The first diversion pipe 5 is fixedly connected with the casting table 1. A diversion side pipe 501 is fixedly communicated with the outer surface of the first diversion pipe 5. Inside the casting table 1, a driving motor 6 is fixedly connected. The output shaft of the driving motor 6 is fixedly connected with a mounting sleeve 7. One end of the diversion side pipe 501 is fixedly communicated with the mounting sleeve 7. The output end of the driving motor 6 is fixedly connected with a first rotating shaft 8. On the outside of the first rotating shaft 8, a first internal thread gear 9 is fixedly connected. Inside the first internal thread gear 9, a first gear 10 is meshed on one side. The middle of one of the first gears 10 is fixedly connected with a second rotating shaft 11. One end of one of the second rotating shafts 11 is movably sleeved with a connecting block 12. The connecting block 12 is fixedly connected with the mounting sleeve 7. On one side of one of the connecting blocks 12, a second internal thread gear 13 is arranged. At the bottom of the second internal thread gear 13, a first support plate 14 is arranged. The first support plate 14 is fixedly connected with the mounting sleeve 7. The bottom of the second internal thread gear 13 is fixedly connected with a threaded sleeve 15. Inside the threaded sleeve 15, a threaded rod 16 is threadedly connected. The bottom of the threaded rod 16 is fixedly connected with a piston plate 17. An opening and closing assembly is arranged inside the mounting sleeve 7. A top-out assembly is arranged on the top of the casting table 1. By starting the driving motor 6, the threaded rod 16 and the piston plate 17 are pushed to move. At this time, the first rotating shaft 8 rotates and synchronously drives the first connecting rod 18 to rotate. The rotation of the first connecting rod 18 drives the circular plate 19 to rotate. The rotation of the circular plate 19 drives the sliding column 21 and the sealing plate 22 to move to both sides through the chute 20. The liquid aluminum flows out and is secondarily input into the forming chamber through the second diversion pipe 30, thereby avoiding the situation of volume reduction and insufficient thickness caused by the cooling shrinkage of the casting after forming. Thereby, the dimensional accuracy is improved, the subsequent processing requirements are reduced, the structural integrity is enhanced, the risks of cracks and deformation are reduced. At the same time, the secondary input of liquefied aluminum for casting can also avoid the occurrence of voids or defects inside the casting, thereby affecting the forming effect of the casting and the use of the casting.

[0030] Among them, the opening and closing component includes a plurality of first connecting rods 18. The plurality of first connecting rods 18 are all fixedly connected to the first internal thread gear 9. One end of the plurality of first connecting rods 18 is fixedly connected with a circular plate 19. Two sliding grooves 20 are respectively formed on both sides inside the circular plate 19. Two sliding columns 21 are respectively slidably connected inside the two sliding grooves 20. A sealing plate 22 is fixedly connected to the bottom of each of the two sliding columns 21. The sealing plate 22 is slidably connected to the casting table 1. A second diversion pipe 30 is fixedly connected to the bottom of the mounting sleeve 7. By starting the driving motor 6 to drive the first connecting rod 18 to rotate, the circular plate 19 is driven to rotate. The rotation of the circular plate 19 drives the sliding column 21 and the sealing plate 22 to move to both sides and open through the sliding groove 20. When the sliding column 21 and the sealing plate 22 move to both sides, the opening and closing speed is controlled by the driving of the driving motor 6. When the liquefied aluminum is input for the second time, the flow speed can be better controlled, so as to meet the needs of different casting processes and products. At the same time, it can be adjusted according to the casting, making the casting more perfect, improving the product forming effect and working efficiency.

[0031] Among them, the ejecting component includes a plurality of second connecting rods 23. The plurality of second connecting rods 23 are fixedly connected to the casting table 1. A shaping die 24 is fixedly connected to the bottom of the second connecting rod 23. The ejecting component further includes a second hydraulic rod 25. The second hydraulic rod 25 is fixedly connected to the middle section inside the casting table 1. The output end of the second hydraulic rod 25 is fixedly connected with a moving die 27. A second support plate 26 is fixedly connected to the inner top of the casting table 1. The moving die 27 is arranged on the top of the second support plate 26. The output end of the second hydraulic rod 25 respectively penetrates through the casting table 1 and the second support plate 26. A plurality of support rods 28 are slidably connected to the periphery inside the moving die 27. The plurality of support rods 28 are all fixedly connected to the second support plate 26. A plurality of top blocks 29 are respectively fixedly connected to the tops of the plurality of support rods 28. The two groups of first gears 10 are meshed with each other and are staggered up and down, and are rotatably installed on the top of the connecting block 12. The first support plate 14 is of an annular structure and does not contact the threaded sleeve 15. After the casting is completely cooled and formed, at this time, the second hydraulic rod 25 is started to drive the moving die 27 to descend. At this time, the formed casting will fit on the surface of the moving die 27. At this time, when the moving die 27 descends, the top block 29 and the support rod 28 will slowly move away from the inside of the triangular groove. During the continuous descent of the moving die 27, the formed casting will be ejected by the top block 29, thereby improving the casting efficiency and reducing the production cycle.

[0032] Among them, the lower end inside the mounting sleeve 7 is a rectangular chamber. The piston plate 17 has the same length and width as the rectangular structure at the lower end of the mounting sleeve 7. The upper end inside the mounting sleeve 7 is a circular chamber. The rectangular chamber can limit the piston plate 17. When the second internal thread gear 13 rotates, the piston plate 17 can be pushed out through the thread.

[0033] Among them, a pressure chamber is provided in the middle of the shaping die 24. The diameter of the pressure chamber is the same as that of the injection piston 3, and their positions correspond to each other. Both the second draft tube 30 and the first draft tube 5 extend into the interior of the shaping die 24 and are connected to the internal die forming cavity thereof. By having the same position and diameter for the pressure chamber and the injection piston 3, the injection piston 3 can better pressurize the die-casting process and improve the forming effect.

[0034] Among them, after the ejector block 29 cooperates with the shaping die 24 when the moving die 27 is jacked up, the top surface of the ejector block 29 is flush with the top surface of the moving die 27. Multiple triangular grooves corresponding to the ejector block 29 are provided on the top of the moving die 27, enabling the ejector block 29 to perfectly cooperate with the moving die 27, thus not affecting the casting forming. At the same time, when the moving die 27 moves, it can eject the casting, improving the discharging speed and work efficiency.

[0035] Working principle:

[0036] When die-casting is required, start the second hydraulic rod 25 to jack out the moving die 27 to cooperate with the shaping die 24 to form a forming cavity. At this time, pour the melted metal in liquid state from the funnel 4. The liquid aluminum flows from the funnel 4 into the interior of the shaping die 24 through the first draft tube 5. At this time, due to the existence of the draft side tube 501, a part of the liquid aluminum will flow into the interior of the mounting sleeve 7 through the draft side tube 501. Since the circular plate 19 is in a closed state, the liquid aluminum will accumulate in the interior of the mounting sleeve 7. At the same time, start the first hydraulic rod 2 to drive the injection piston 3 to press down to pressurize the interior of the forming cavity, so that another part of the liquid aluminum is die-cast in the forming cavity. After the liquid aluminum is die-cast and cooled, the casting is formed at this time. However, during the forming process, due to the shrinkage during cooling, the volume will decrease. At this time, start the drive motor 6. The drive motor 6 starts to drive the first rotating shaft 8 to rotate. The first rotating shaft 8 rotates to drive the first internal thread gear 9 to rotate. The first internal thread gear 9 rotates to drive the first gear 10 to rotate. The first gear 10 rotates to drive another first gear 10 to rotate. Another first gear 10 rotates to drive the second internal thread gear 13 to rotate. The second internal thread gear 13 rotates to drive the thread sleeve 15 to rotate. The thread sleeve 15 rotates to push the threaded rod 16 and the piston plate 17 to move. At this time, the first rotating shaft 8 rotates synchronously to drive the first connecting rod 18 to rotate. The first connecting rod 18 rotates to drive the circular plate 19 to rotate. The circular plate 19 rotates to drive the sliding column 21 and the sealing plate 22 to move to both sides through the sliding groove 20. The liquid aluminum flows out and flows into the interior of the forming chamber through the second draft tube 30 for secondary input, thus avoiding the situation of volume reduction and insufficient thickness caused by cooling shrinkage after the casting is formed, thereby improving the dimensional accuracy, reducing the need for subsequent processing, enhancing the structural integrity, reducing the risk of cracks and deformation. At the same time, secondary input of liquefied aluminum for casting can also avoid voids or defects inside the casting, thus affecting the forming effect of the casting and the use of the casting.

[0037] After the casting is completely cooled and formed, the second hydraulic rod 25 is activated to drive the moving die 27 to descend. At this time, the formed casting will fit the surface of the moving die 27. When the moving die 27 descends, the top block 29 and the support rod 28 will slowly move away from the inside of the triangular groove. During the continuous descent of the moving die 27, the formed casting will be ejected by the top block 29, thereby improving the casting efficiency and reducing the production cycle.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable casting device for components of an offshore wind turbine, comprising a casting table (1), a first hydraulic rod (2) is fixedly connected to the middle of the top of the casting table (1), and a shot piston (3) is fixedly connected to the output end of the first hydraulic rod (2), characterized in that: On one side of the top of the casting table (1), a funnel (4) is fixedly connected. The bottom of the funnel (4) is fixedly connected with a first diversion pipe (5). The first diversion pipe (5) is fixedly connected with the casting table (1). A diversion side pipe (501) is fixedly communicated with the outer surface of the first diversion pipe (5). Inside the casting table (1), a driving motor (6) is fixedly connected. The driving motor (6) is fixedly connected with a mounting sleeve (7). One end of the diversion side pipe (501) is fixedly communicated with the mounting sleeve (7). The output end of the driving motor (6) is fixedly connected with a first rotating shaft (8). On the outer side of the first rotating shaft (8), a first internal thread gear (9) is fixedly connected. Inside the first internal thread gear (9), a first gear (10) is meshed and connected on one side. The rotation of the first gear (10) drives the rotation of another first gear (10). The two first gears (10) are meshed with each other and staggered up and down. In the middle of the two first gears (10), a second rotating shaft (11) is fixedly connected. One end of the second rotating shaft (11) is movably sleeved with a connecting block (12). The connecting block (12) is fixedly connected with the mounting sleeve (7). On one side of one of the connecting blocks (12), a second internal thread gear (13) is arranged. The rotation of another first gear (10) drives the rotation of the second internal thread gear (13). At the bottom of the second internal thread gear (13), a first support plate (14) is arranged. The first support plate (14) is fixedly connected with the mounting sleeve (7). At the bottom of the second internal thread gear (13), a threaded sleeve (15) is fixedly connected. Inside the threaded sleeve (15), a threaded rod (16) is threadedly connected. At the bottom of the threaded rod (16), a piston plate (17) is fixedly connected. An opening and closing assembly is arranged inside the mounting sleeve (7). A top-out assembly is arranged on the top of the casting table (1). The opening and closing assembly includes a plurality of first connecting rods (18). The plurality of first connecting rods (18) are all fixedly connected with the first internal thread gear (9). One end of the plurality of first connecting rods (18) is fixedly connected with a circular plate (19). On both sides inside the circular plate (19), two sliding grooves (20) are respectively opened. Inside the two sliding grooves (20), two sliding columns (21) are respectively slidably connected. At the bottom of the two sliding columns (21), a sealing plate (22) is fixedly connected. The sealing plate (22) is slidably connected with the casting table (1). The bottom of the mounting sleeve (7) is fixedly connected with a second diversion pipe (30). Both the second diversion pipe (30) and the first diversion pipe (5) extend into the inside of the shaping die (24) and are connected with the internal die forming cavity thereof.

2. The variable casting device for components of an offshore wind turbine according to claim 1, characterized in that: The top-out assembly includes a plurality of second connecting rods (23). The plurality of second connecting rods (23) are fixedly connected with the casting table (1). The bottom of the second connecting rods (23) is fixedly connected with a shaping die (24).

3. The variable casting device for components of an offshore wind turbine according to claim 2, characterized in that: The ejection assembly further includes a second hydraulic rod (25). The second hydraulic rod (25) is fixedly connected to the middle section inside the casting table (1). The output end of the second hydraulic rod (25) is fixedly connected to a moving die (27). The inner top of the casting table (1) is fixedly connected to a second support plate (26). The moving die (27) is arranged on the top of the second support plate (26). The output end of the second hydraulic rod (25) penetrates through the casting table (1) and the second support plate (26) respectively. A plurality of support rods (28) are slidably connected to the periphery inside the moving die (27). The plurality of support rods (28) are all fixedly connected to the second support plate (26). The tops of the plurality of support rods (28) are respectively fixedly connected to a plurality of top blocks (29).

4. The variable casting device for components of an offshore wind turbine according to claim 3, characterized in that, The first support plate (14) is of an annular structure and does not contact the threaded sleeve (15).

5. The variable casting device for components of an offshore wind turbine according to claim 4, wherein: The lower end inside the mounting sleeve (7) is a rectangular chamber. The length and width of the rectangular structure at the lower end of the piston plate (17) and the mounting sleeve (7) are equal. The upper end inside the mounting sleeve (7) is a circular chamber.

6. The variable casting device for components of an offshore wind turbine according to claim 5, characterized in that: A pressing cavity is formed in the middle of the shaping die (24). The diameter of the pressing cavity is the same as that of the injection piston (3), and the position of the pressing cavity corresponds to that of the injection piston (3).

7. A variable casting device for components of an offshore wind turbine according to claim 6, characterized in that: After the top block (29) is lifted by the moving die (27) and cooperates with the shaping die (24), the top surface of the top block (29) is flush with the top surface of the moving die (27). A plurality of triangular grooves corresponding to the top blocks (29) are formed in the top of the moving die (27).

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