A graphite crucible hoisting device

Abstract

The present invention discloses a lifting device for a graphite crucible, which relates to the technical field of lifting devices and includes a top frame. A plurality of fixed arms are fixedly connected to the bottom of the top frame. Bent arms are arranged inside the plurality of fixed arms. Support pads are fixedly connected to the inner sides of the plurality of bent arms. Fixed rods are fixedly connected to the bottom ends of the plurality of bent arms. Hinge plates are hinged to the bottom ends of the plurality of fixed rods. Fixed sleeves are fixedly connected to the bottoms of the plurality of hinge plates. Bottom support plates are arranged inside the plurality of fixed sleeves. Guide plates are fixedly connected to the outer sides of the plurality of bent arms. Vertical rods are arranged on the tops of the plurality of fixed sleeves. A support assembly for supporting the inner wall of the crucible is arranged at the center of the bottom of the top frame. For this graphite crucible lifting device, when supporting the crucible, a plurality of inner support plates cooperate with a plurality of support pads to fix the side wall of the crucible, improving the stability of the crucible during lifting and preventing deviation and skew during the lifting process.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting devices, and specifically to a graphite crucible lifting device. Background Art

[0002] A graphite crucible is a high-temperature container made of high-purity graphite material, with excellent high-temperature resistance, thermal conductivity, and chemical stability. It can withstand temperatures up to 3000°C and is suitable for melting, casting, and high-temperature treatment processes in the fields of metallurgy, chemical industry, electronics, etc. Its manufacturing process includes raw material selection, forming, sintering, and surface treatment to ensure high strength and durability. Graphite crucibles are widely used in scenarios such as metal melting, high-temperature chemical reactions, and single-crystal silicon production, with advantages such as high efficiency, durability, and versatility, but they are costly and fragile and require careful maintenance. With the growth of the demand for high-temperature processes, the application prospect of graphite crucibles in the industry is very broad.

[0003] During the process of lifting a graphite crucible, common problems include breakage of the crucible due to the brittleness of the material, slipping or tilting caused by mismatched lifting tools or improper operation, increased slipping risk due to the wet and slippery surface of the crucible, the influence of the high-temperature environment on the performance and operation safety of the lifting tools, imbalance caused by unstable center of gravity or uneven material distribution of the crucible, and operational difficulties due to narrow working space or many obstacles. Summary of the Invention

[0004] The purpose of the present invention is to provide a graphite crucible lifting device to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A graphite crucible lifting device includes a top frame. A plurality of fixed arms are fixedly connected to the bottom of the top frame. Bending arms are arranged inside the plurality of fixed arms. Support pads are fixedly connected to the inner sides of the plurality of bending arms. Fixed rods are fixedly connected to the bottom ends of the plurality of bending arms. Hinge plates are hinged to the bottom ends of the plurality of fixed rods. Fixed sleeves are fixedly connected to the bottoms of the plurality of hinge plates. Bottom support plates are arranged inside the plurality of fixed sleeves. Guide plates are fixedly connected to the outer sides of the plurality of bending arms. The plurality of bending arms and the plurality of guide plates penetrate through the top frame and are movably connected to the top frame. Oblique grooves are formed inside the plurality of guide plates. Vertical rods are arranged on the tops of the plurality of fixed sleeves. Guide frames are fixedly connected to the top ends of the plurality of vertical rods. First round rods are fixedly connected to the tops of the plurality of guide frames. The plurality of first round rods respectively penetrate through the plurality of oblique grooves and are slidably connected to the plurality of oblique grooves. A support assembly for supporting the inner wall of the crucible is arranged at the center of the bottom of the top frame.

[0006] Preferably, a connecting plate is fixedly connected to the rear side of the fixed sleeve, a rear baffle is fixedly connected to the rear end of the connecting plate, fixed cylinders are fixedly connected to both sides inside the fixed sleeve, rotating sleeves are rotatably connected to the inside of the two fixed cylinders, first threaded rods are slidably connected to the inside of the two rotating sleeves, limiting plates are integrally formed on both sides inside the two rotating sleeves, limiting grooves are formed on both sides of the two first threaded rods, and the two limiting plates are respectively slidably connected to the inside of the two limiting grooves and are adapted to the two limiting grooves. The first threaded rod is driven to rotate by limiting the limiting groove with the limiting plate.

[0007] Preferably, a front baffle is fixedly connected to the front end of the fixed sleeve, threaded sleeves are fixedly connected to both sides inside the front baffle, the two first threaded rods respectively penetrate through the two threaded sleeves and are threadedly connected to the two threaded sleeves, and the front ends of the two first threaded rods are rotatably connected to the corresponding bottom support plates. The bottom support plate is driven to move when the first threaded rod moves.

[0008] Preferably, support shafts are fixedly connected to both sides of the plurality of bent arms, the plurality of support shafts are respectively rotatably connected to the plurality of fixed arms, a plurality of mounting sleeves are fixedly connected to the bottom of the top frame, hydraulic cylinders are fixedly connected to the inside of the plurality of mounting sleeves, push frames are fixedly connected to the output ends of the plurality of hydraulic cylinders, second round rods are fixedly connected to the inside of the plurality of push frames, and the plurality of second round rods respectively penetrate through the plurality of arc-shaped grooves and are slidably connected to the plurality of arc-shaped grooves. The push frame is driven to move by starting the hydraulic cylinder, so that the push frame drives the second round rod to move, and the second round rod pushes the bent arm to swing.

[0009] Preferably, second threaded rods are rotatably connected to the inside of the plurality of front baffles, the rear ends of the plurality of second threaded rods respectively penetrate through the plurality of rear baffles and are rotatably connected to the plurality of rear baffles, moving sleeves are threadedly connected to the outside of the plurality of second threaded rods, and the plurality of moving sleeves are respectively fixedly connected to the bottom ends of the plurality of vertical rods. The moving sleeve is driven to move by rotating the second threaded rod, so that the moving sleeve drives the vertical rod to move.

[0010] Preferably, rotating rods are fixedly connected to the rear ends of the plurality of rotating sleeves, the plurality of rotating rods respectively penetrate through the rear ends of the plurality of fixed cylinders and are rotatably connected to the plurality of fixed cylinders, and the plurality of rotating rods respectively penetrate through the plurality of rear baffles and are rotatably connected to the plurality of rear baffles.

[0011] Preferably, driven gears are fixedly connected to the rear ends of the plurality of rotating rods, L-shaped plates are fixedly connected to the rear sides of the plurality of rear baffles, first motors are fixedly connected to the rear sides of the plurality of L-shaped plates, intermediate gears are fixedly connected to the output ends of the plurality of first motors, driven gears are meshed and connected to both sides of the plurality of intermediate gears, and the rear ends of the plurality of rotating rods are respectively fixedly connected to the plurality of driven gears.

[0012] Preferably, the support assembly includes a third threaded rod, a moving ring, and a plurality of support arms. A second motor is fixedly connected to the top of the top frame. The output end of the second motor is fixedly connected to the top end of the third threaded rod. The third threaded rod penetrates through the top frame and is rotatably connected to the top frame. The third threaded rod penetrates through the moving ring and is threadedly connected to the moving ring. A plurality of connection blocks are fixedly connected to the outer side of the moving ring. One end of each of the plurality of support arms is respectively hinged to one of the plurality of connection blocks. The rotation of the third threaded rod drives the movement of the moving ring.

[0013] Preferably, limit convex plates are fixedly connected to the outer sides of the plurality of mounting sleeves. Sliding sleeves are slidably connected to the outer sides of the plurality of limit convex plates. Push plates are fixedly connected to the bottoms of the plurality of sliding sleeves. One end of each of the plurality of support arms away from the moving ring is respectively hinged to the inner sides of the plurality of push plates, so that the moving ring drives the plurality of support arms to move and pushes the plurality of push plates to move outward.

[0014] Preferably, piston sleeves are fixedly connected to the outer sides of the plurality of push plates. Piston plates are slidably connected to the interiors of the plurality of piston sleeves. Slide rods are fixedly connected to one side of each of the plurality of piston plates. Inner support plates are fixedly connected to one end of each of the plurality of slide rods. A plurality of through holes are formed in the interiors of the plurality of piston plates. Buffer liquid is filled in the interiors of the plurality of piston sleeves. Springs are sleeved on the outer sides of the plurality of slide rods. Two ends of each of the plurality of springs are respectively fixedly connected to one of the plurality of piston sleeves and the inner support plate, so that the inner support plate contacts the inner wall of the crucible and supports the crucible thereby, improving stability.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. In this application, a plurality of second round rods push a plurality of bent arms to swing. When the plurality of second round rods swing, they deflect with the support shaft as the rotation center. Furthermore, the bottoms of the plurality of bent arms contract inward. The plurality of bent arms drive the plurality of fixed sleeves to move. The plurality of fixed sleeves drive the plurality of fixed cylinders and rotating sleeves to move. The plurality of rotating sleeves drive the plurality of first threaded rods to move, so that the plurality of first threaded rods push the plurality of bottom support plates to move inward, making the plurality of bottom support plates move towards the bottom of the crucible and approaching the bottom of the crucible to support the crucible.

[0017] 2. When the two driven gears of this application rotate, they drive the two rotating rods to rotate. When multiple rotating rods rotate, they drive multiple rotating sleeves to rotate. During the rotation of multiple rotating sleeves, the limiting plates on both sides inside them limit multiple limiting grooves, thereby driving multiple first threaded rods to rotate. Since the first threaded rods are threadedly connected to the threaded sleeves, the first threaded rods move horizontally when rotating, causing multiple first threaded rods to drive multiple bottom support plates to move towards the center of the crucible bottom, making multiple bottom support plates lift the crucible bottom upward. Multiple bottom support plates support the crucible, thereby improving the stability of the crucible during hoisting. At the same time, when multiple bent arms swing, they drive multiple support pads to move inward, making multiple support pads contact the outer wall of the crucible, thus cooperating with the bottom support plates to fix the crucible.

[0018] 3. This application enables multiple piston sleeves to drive multiple sliding rods and inner support plates to move. Multiple inner support plates are in close contact with the inner wall of the crucible. As the piston sleeves continue to move, the piston sleeves and the piston plates move relative to each other. During the movement of the piston plate inside the piston sleeve, the buffer liquid inside the piston sleeve flows through multiple through holes opened inside the piston plate, forming a damping effect, cooperating with the spring to buffer the piston plate. Finally, the piston sleeves push the inner support plates to tightly fit against the inner wall of the crucible to support the crucible. Multiple inner support plates cooperate with multiple support pads to fix the side wall of the crucible, improving the stability of the crucible during hoisting, preventing deviation and skew during the hoisting process. Multiple bottom support plates support the bottom of the crucible to prevent the crucible from falling off, and can also be adjusted adaptively according to the bottom curvature of the crucible for easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the present invention;

[0020] Figure 2 is the structural schematic diagram of the guide plate of the present invention;

[0021] Figure 3 is the structural schematic diagram of the mounting sleeve of the present invention;

[0022] Figure 4 is the structural schematic diagram of the support pad of the present invention;

[0023] Figure 5 is the structural schematic diagram of the fixing sleeve of the present invention;

[0024] Figure 6 is the structural schematic diagram of the rotating sleeve of the present invention;

[0025] Figure 7 is the structural schematic diagram of the moving sleeve of the present invention;

[0026] Figure 8 is the structural schematic diagram of the first threaded rod of the present invention;

[0027] Figure 9Structural schematic diagram of the front baffle of the present invention;

[0028] Figure 10 Structural schematic diagram of the guide plate of the present invention;

[0029] Figure 11 Structural schematic diagram of the moving ring of the present invention;

[0030] Figure 12 Structural schematic diagram of the push plate of the present invention;

[0031] Figure 13 Structural schematic diagram of the piston plate of the present invention.

[0032] Reference numerals in the figure: 1, top frame; 2, fixed arm; 3, bent arm; 301, arc-shaped groove; 302, support shaft; 4, support pad; 5, fixed rod; 6, fixed sleeve; 7, hinge plate; 8, bottom support plate; 9, guide plate; 901, inclined groove; 10, vertical rod; 11, guide frame; 12, first round rod; 13, mounting sleeve; 14, hydraulic cylinder; 15, push frame; 16, second round rod; 17, connecting plate; 18, rear baffle; 19, fixed cylinder; 20, rotating sleeve; 21, first threaded rod; 22, limiting plate; 23, limiting groove; 24, threaded sleeve; 25, front baffle; 26, second threaded rod; 27, moving sleeve; 29, first motor; 30, intermediate gear; 31, driven gear; 32, rotating rod; 33, third threaded rod; 34, moving ring; 35, connecting block; 36, support arm; 37, limiting convex plate; 38, sliding sleeve; 39, push plate; 40, piston sleeve; 41, sliding rod; 42, inner support plate; 43, piston plate; 44, spring; 45, second motor; 46, L-shaped plate. Detailed implementation manners

[0033] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment: As Figures 1 - 13As shown in the figure, the present invention provides a technical solution for a lifting device of a graphite crucible, including a top frame 1. A plurality of fixed arms 2 are fixedly connected to the bottom of the top frame 1. A bent arm 3 is arranged inside each of the plurality of fixed arms 2. A support pad 4 is fixedly connected to the inner side of each of the plurality of bent arms 3. A fixed rod 5 is fixedly connected to the bottom end of each of the plurality of bent arms 3. An articulated plate 7 is hinged to the bottom end of each of the plurality of fixed rods 5. A fixed sleeve 6 is fixedly connected to the bottom of each of the plurality of articulated plates 7. A bottom support plate 8 is arranged inside each of the plurality of fixed sleeves 6. A guide plate 9 is fixedly connected to the outer side of each of the plurality of bent arms 3. Each of the plurality of bent arms 3 and each of the plurality of guide plates 9 penetrate through the top frame 1 and are movably connected to the top frame 1. An inclined groove 901 is formed inside each of the plurality of guide plates 9. A vertical rod 10 is arranged on the top of each of the plurality of fixed sleeves 6. A guide frame 11 is fixedly connected to the top end of each of the plurality of vertical rods 10. A first round rod 12 is fixedly connected to the top of each of the plurality of guide frames 11. Each of the plurality of first round rods 12 penetrates through the corresponding inclined groove 901 and is slidably connected to the corresponding inclined groove 901. A connecting plate 17 is fixedly connected to the rear side of the fixed sleeve 6. A rear baffle 18 is fixedly connected to the rear end of the connecting plate 17. Fixed cylinders 19 are fixedly connected to both sides inside the fixed sleeve 6. A rotating sleeve 20 is rotatably connected to the inside of each of the two fixed cylinders 19. A first threaded rod 21 is slidably connected to the inside of each of the two rotating sleeves 20. Limiting plates 22 are integrally formed on both sides inside each of the two rotating sleeves 20. Limiting grooves 23 are formed on both sides of each of the two first threaded rods 21. Each of the two limiting plates 22 is slidably connected to the inside of the corresponding limiting groove 23 and is adapted to the corresponding limiting groove 23. The first threaded rod 21 is driven to rotate by limiting the limiting groove 23 by the limiting plate 22. A front baffle 25 is fixedly connected to the front end of the fixed sleeve 6. Threaded sleeves 24 are fixedly connected to both sides inside the front baffle 25. Each of the two first threaded rods 21 penetrates through the corresponding threaded sleeve 24 and is threadedly connected to the corresponding threaded sleeve 24. The front ends of the two first threaded rods 21 are rotatably connected to the corresponding bottom support plate 8. The bottom support plate 8 is driven to move by the movement of the first threaded rod 21. Shafts 302 are fixedly connected to both sides of each of the plurality of bent arms 3. Each of the plurality of shafts 302 is rotatably connected to the corresponding fixed arm 2. A plurality of mounting sleeves 13 are fixedly connected to the bottom of the top frame 1. A hydraulic cylinder 14 is fixedly connected to the inside of each of the plurality of mounting sleeves 13. A push frame 15 is fixedly connected to the output end of each of the plurality of hydraulic cylinders 14. A second round rod 16 is fixedly connected to the inside of each of the plurality of push frames 15. Each of the plurality of second round rods 16 penetrates through the corresponding arc-shaped groove 301 and is slidably connected to the corresponding arc-shaped groove 301. The hydraulic cylinder 14 is started to drive the push frame 15 to move, so that the push frame 15 drives the second round rod 16 to move, and the second round rod 16 pushes the bent arm 3 to swing. A second threaded rod 26 is rotatably connected to the inside of each of the plurality of front baffles 25. The rear ends of each of the plurality of second threaded rods 26 penetrate through the corresponding rear baffle 18 and are rotatably connected to the corresponding rear baffle 18. A moving sleeve 27 is threadedly connected to the outside of each of the plurality of second threaded rods 26. Each of the plurality of moving sleeves 27 is fixedly connected to the bottom end of the corresponding vertical rod 10. The moving sleeve 27 is driven to move by the rotation of the second threaded rod 26, so that the moving sleeve 27 drives the vertical rod 10 to move.A rotating rod 32 is fixedly connected to the rear end of each of the plurality of rotating sleeves 20. The plurality of rotating rods 32 respectively penetrate through the rear ends of the plurality of fixed cylinders 19 and are rotatably connected to the plurality of fixed cylinders 19. The plurality of rotating rods 32 respectively penetrate through the plurality of rear baffles 18 and are rotatably connected to the plurality of rear baffles 18. A driven gear 31 is fixedly connected to the rear end of each of the plurality of rotating rods 32. An L-shaped plate 46 is fixedly connected to the rear side of each of the plurality of rear baffles 18. A first motor 29 is fixedly connected to the rear side of each of the plurality of L-shaped plates 46. An intermediate gear 30 is fixedly connected to the output end of each of the plurality of first motors 29. The two sides of each of the plurality of intermediate gears 30 are meshed with a driven gear 31. The rear ends of the plurality of rotating rods 32 are respectively fixedly connected to the plurality of driven gears 31.

[0035] A support assembly for supporting the inner wall of the crucible is arranged at the center of the bottom of the top frame 1. The support assembly includes a third threaded rod 33, a moving ring 34 and a plurality of support arms 36. A second motor 45 is fixedly connected to the top of the top frame 1. The output end of the second motor 45 is fixedly connected to the top end of the third threaded rod 33. The third threaded rod 33 penetrates through the top frame 1 and is rotatably connected to the top frame 1. The third threaded rod 33 penetrates through the moving ring 34 and is threadedly connected to the moving ring 34. A plurality of connecting blocks 35 are fixedly connected to the outer side of the moving ring 34. One end of each of the plurality of support arms 36 is respectively hinged to one of the plurality of connecting blocks 35. By rotating the third threaded rod 33, the moving ring 34 is driven to move. A limiting convex plate 37 is fixedly connected to the outer side of each of the plurality of mounting sleeves 13. A sliding sleeve 38 is slidably connected to the outer side of each of the plurality of limiting convex plates 37. A push plate 39 is fixedly connected to the bottom of each of the plurality of sliding sleeves 38. One end of each of the plurality of support arms 36 away from the moving ring 34 is respectively hinged to the inner side of one of the plurality of push plates 39. The moving ring 34 drives the plurality of support arms 36 to move and pushes the plurality of push plates 39 to move outward. A piston sleeve 40 is fixedly connected to the outer side of each of the plurality of push plates 39. A piston plate 43 is slidably connected to the inside of each of the plurality of piston sleeves 40. A sliding rod 41 is fixedly connected to one side of each of the plurality of piston plates 43. An inner support plate 42 is fixedly connected to one end of each of the plurality of sliding rods 41. A plurality of through holes are formed in each of the plurality of piston plates 43. A buffer liquid is filled in each of the plurality of piston sleeves 40. A spring 44 is sleeved on the outer side of each of the plurality of sliding rods 41. Two ends of each of the plurality of springs 44 are respectively fixedly connected to one of the plurality of piston sleeves 40 and the inner support plate 42. The inner support plate 42 contacts the inner wall of the crucible, and the crucible is supported thereby to improve stability.

[0036] When this solution is in use, since the shape of the crucible is cylindrical and frustum-shaped with a wider top and a narrower bottom, after lifting the top frame 1 above the crucible and then lowering the top frame 1, the top frame 1 drives multiple fixing sleeves 6 to be located outside the crucible. By synchronously starting multiple hydraulic cylinders 14, then the hydraulic cylinders 14 push multiple push frames 15 to move outward. Then the multiple push frames 15 drive multiple second round rods 16 to move, so that the multiple second round rods 16 push multiple bent arms 3 to swing. When the multiple second round rods 16 swing, they deflect with the support shaft 302 as the rotation center, and further cause the bottoms of the multiple bent arms 3 to contract inward. The multiple bent arms 3 drive the multiple fixing sleeves 6 to move, the multiple fixing sleeves 6 drive multiple fixing cylinders 19 and rotating sleeves 20 to move, and the multiple rotating sleeves 20 drive multiple first threaded rods 21 to move, so that the multiple first threaded rods 21 push multiple bottom support plates 8 to move inward, making the multiple bottom support plates 8 move towards the bottom of the crucible and support the crucible near the bottom of the crucible.

[0037] By synchronously starting multiple first motors 29, the multiple first motors 29 drive multiple intermediate gears 30 to rotate. When the multiple intermediate gears 30 rotate, they drive two driven gears 31 to rotate. When the two driven gears 31 rotate, they drive two rotating rods 32 to rotate. When the multiple rotating rods 32 rotate, they drive multiple rotating sleeves 20 to rotate. During the rotation of the multiple rotating sleeves 20, the limiting plates 22 on both sides inside them limit multiple limiting grooves 23, so as to drive multiple first threaded rods 21 to rotate. Since the first threaded rods 21 are threadedly connected to the threaded sleeves 24, the first threaded rods 21 move horizontally when rotating, so that the multiple first threaded rods 21 drive multiple bottom support plates 8 to move towards the center of the bottom of the crucible, making the multiple bottom support plates 8 lift the bottom of the crucible upward. The multiple bottom support plates 8 support the crucible, so as to improve the stability of the crucible during hoisting. At the same time, when the multiple bent arms 3 swing, they drive multiple support pads 4 to move inward, making the multiple support pads 4 contact the outer wall of the crucible, so as to cooperate with the bottom support plates 8 to fix the crucible.

[0038] A plurality of second threaded rods 26 rotate. During the rotation of the plurality of second threaded rods 26, the moving sleeves 27 are driven to move, causing the plurality of moving sleeves 27 to drive the plurality of vertical rods 10 to move, and the plurality of vertical rods 10 to drive the plurality of guide frames 11 and the first round rod 12 to move. Then, the first round rod 12 moves along the inclined slot 901. Since the inclined slot 901 has an upwardly inclined trajectory, the first round rod 12 rises or falls during movement, thereby driving the guide frame 11 and the vertical rod 10 to lift and lower. During the lifting and lowering process of the vertical rod 10, the moving sleeve 27 is driven to lift and lower, so that the moving sleeve 27 drives the rear ends of the second threaded rod 26 and the fixed sleeve 6 to deflect up and down, adjusting the angle between the fixed sleeve 6 and the bottom support plate 8, so that the bottom support plate 8 fits against the bottom of the crucible, thereby improving the stability of the crucible during hoisting. Since the first round rod 12 is cylindrical, when the vertical rod 10 drives the guide frame 11 and the first round rod 12 to deflect at an angle, the first round rod 12 always remains inside the inclined slot 901.

[0039] The second motor 45 is started to drive the third threaded rod 33 to rotate. Then, when the third threaded rod 33 rotates, the moving ring 34 is driven to descend, and the moving ring 34 pushes the plurality of connecting blocks 35 and the support arms 36 to move. When the plurality of support arms 36 descend, they open outwards and push the plurality of push plates 39 to slide outwards, causing the plurality of push plates 39 to drive the plurality of sliding sleeves 38 to move outside the plurality of limit convex plates 37, limiting and guiding the push plates 39 and improving the stability of the push plates 39. When the plurality of push plates 39 move outwards, they drive the plurality of piston sleeves 40 to move outwards, causing the plurality of piston sleeves 40 to drive the plurality of sliding rods 41 and the inner support plates 42 to move. The plurality of inner support plates 42 are in contact with the inner wall of the crucible. The piston sleeve 40 continues to move, causing the piston sleeve 40 and the piston plate 43 to move relative to each other. During the movement of the piston plate 43 inside the piston sleeve 40, the buffer liquid inside the piston sleeve 40 flows through the plurality of through holes opened inside the piston plate 43, forming a damping effect, and cooperating with the spring 44 to buffer the piston plate 43. Finally, the piston sleeve 40 pushes the inner support plate 42 to tightly fit against the inner wall of the crucible to support the crucible. The plurality of inner support plates 42 cooperate with the plurality of support pads 4 to fix the side wall of the crucible, improving the stability of the crucible during hoisting and preventing deviation and skew during the hoisting process. The plurality of bottom support plates 8 support the bottom of the crucible to prevent the crucible from falling off, and can also be adjusted adaptively according to the bottom curvature of the crucible for easy use.

[0040] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Thus, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A graphite crucible hoisting device, characterized in that: It includes a top frame (1), a plurality of fixed arms (2) are fixedly connected to the bottom of the top frame (1), bent arms (3) are arranged inside the plurality of fixed arms (2), support shafts (302) are fixedly connected to both sides of the plurality of bent arms (3), the plurality of support shafts (302) are respectively rotatably connected to the plurality of fixed arms (2), support pads (4) are fixedly connected to the inner sides of the plurality of bent arms (3), fixed rods (5) are fixedly connected to the bottom ends of the plurality of bent arms (3), hinge plates (7) are hinged to the bottom ends of the plurality of fixed rods (5), fixed sleeves (6) are fixedly connected to the bottoms of the plurality of hinge plates (7), bottom support plates (8) are arranged inside the plurality of fixed sleeves (6), guide plates (9) are fixedly connected to the outer sides of the plurality of bent arms (3), the plurality of bent arms (3) and the plurality of guide plates (9) penetrate through the top frame (1) and are movably connected to the top frame (1), inclined grooves (901) are formed inside the plurality of guide plates (9), vertical rods (10) are arranged on the tops of the plurality of fixed sleeves (6), guide frames (11) are fixedly connected to the top ends of the plurality of vertical rods (10), first round rods (12) are fixedly connected to the tops of the plurality of guide frames (11), the plurality of first round rods (12) respectively penetrate through the plurality of inclined grooves (901) and are slidably connected to the plurality of inclined grooves (901), a support assembly for supporting the inner wall of the crucible is arranged at the center of the bottom of the top frame (1), and the support assembly includes a third threaded rod (33), a moving ring (34) and a plurality of support arms (36). A second motor (45) is fixedly connected to the top of the top frame (1), the output end of the second motor (45) is fixedly connected to the top end of the third threaded rod (33), the third threaded rod (33) penetrates through the top frame (1) and is rotatably connected to the top frame (1), the third threaded rod (33) penetrates through the moving ring (34) and is threadedly connected to the moving ring (34), a plurality of connecting blocks (35) are fixedly connected to the outer side of the moving ring (34), and one ends of the plurality of support arms (36) are respectively hinged to the plurality of connecting blocks (35).

2. The graphite crucible hoisting device according to claim 1, characterized in that: A connecting plate (17) is fixedly connected to the rear side of the fixed sleeve (6), a rear baffle (18) is fixedly connected to the rear end of the connecting plate (17), fixed cylinders (19) are fixedly connected to both sides inside the fixed sleeve (6), rotating sleeves (20) are rotatably connected to the inside of the two fixed cylinders (19), first threaded rods (21) are slidably connected to the inside of the two rotating sleeves (20), limiting plates (22) are integrally formed on both sides inside the two rotating sleeves (20), limiting grooves (23) are formed on both sides of the two first threaded rods (21), and the two limiting plates (22) are respectively slidably connected to the inside of the two limiting grooves (23) and are adapted to the two limiting grooves (23).

3. The graphite crucible hoisting device according to claim 2, characterized in that: The front end of the fixed sleeve (6) is fixedly connected with a front baffle (25). Both sides inside the front baffle (25) are fixedly connected with threaded sleeves (24). The two first threaded rods (21) respectively penetrate through the two threaded sleeves (24) and are threadedly connected with the two threaded sleeves (24). The front ends of the two first threaded rods (21) are rotatably connected to the corresponding bottom support plates (8).

4. A graphite crucible hoisting device according to claim 1, characterized in that: The bottom of the top frame (1) is fixedly connected with a plurality of mounting sleeves (13). Hydraulic cylinders (14) are fixedly connected inside the plurality of mounting sleeves (13). The output ends of the plurality of hydraulic cylinders (14) are fixedly connected with push frames (15). Second round rods (16) are fixedly connected inside the plurality of push frames (15). The plurality of second round rods (16) respectively penetrate through the plurality of arc-shaped grooves (301) and are slidably connected with the plurality of arc-shaped grooves (301).

5. The graphite crucible lifting device according to claim 3, wherein: Second threaded rods (26) are rotatably connected inside the plurality of front baffles (25). The rear ends of the plurality of second threaded rods (26) respectively penetrate through the plurality of rear baffles (18) and are rotatably connected with the plurality of rear baffles (18). Moving sleeves (27) are threadedly connected to the outer sides of the plurality of second threaded rods (26). The plurality of moving sleeves (27) are respectively fixedly connected to the bottom ends of the plurality of vertical rods (10).

6. The graphite crucible hoisting device according to claim 2, characterized in that: The rear ends of the plurality of rotating sleeves (20) are fixedly connected with rotating rods (32). The plurality of rotating rods (32) respectively penetrate through the rear ends of the plurality of fixed cylinders (19) and are rotatably connected with the plurality of fixed cylinders (19). The plurality of rotating rods (32) respectively penetrate through the plurality of rear baffles (18) and are rotatably connected with the plurality of rear baffles (18).

7. The lifting device for graphite crucibles according to claim 6, characterized in that: The rear ends of the plurality of rotating rods (32) are fixedly connected with driven gears (31). L-shaped plates (46) are fixedly connected to the rear sides of the plurality of rear baffles (18). First motors (29) are fixedly connected to the rear sides of the plurality of L-shaped plates (46). Intermediate gears (30) are fixedly connected to the output ends of the plurality of first motors (29). The two sides of the plurality of intermediate gears (30) are meshed with the driven gears (31). The rear ends of the plurality of rotating rods (32) are respectively fixedly connected to the plurality of driven gears (31).

8. The graphite crucible hoisting device according to claim 4, wherein: Limit convex plates (37) are fixedly connected to the outer sides of the plurality of mounting sleeves (13). Sliding sleeves (38) are slidably connected to the outer sides of the plurality of limit convex plates (37). Push plates (39) are fixedly connected to the bottoms of the plurality of sliding sleeves (38). One ends of the plurality of support arms (36) far from the moving ring (34) are respectively hinged to the inner sides of the plurality of push plates (39).

9. The graphite crucible lifting device according to claim 8, characterized in that: A piston sleeve (40) is fixedly connected to the outside of each of the plurality of push plates (39). A piston plate (43) is slidably connected to the inside of each of the plurality of piston sleeves (40). A slide bar (41) is fixedly connected to one side of each of the plurality of piston plates (43). An inner support plate (42) is fixedly connected to one end of each of the plurality of slide bars (41). A plurality of through holes are formed in each of the plurality of piston plates (43). A buffer liquid is poured into the inside of each of the plurality of piston sleeves (40). A spring (44) is sleeved on the outside of each of the plurality of slide bars (41). Two ends of each of the plurality of springs (44) are fixedly connected to the corresponding piston sleeve (40) and inner support plate (42) respectively.

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