A wind turbine unit primary lightweight planet carrier casting device

Abstract

The utility model relates to wind generating set planetary carrier casting technical field especially a kind of wind generating set primary lightweight planetary carrier casting device, including lower sand box and upper sand box, the upper sand box is set in the upper end of lower sand box, the inner chamber of lower sand box is provided with lower mould frame, the inner chamber of lower mould frame is installed with lower mould seat, the inner chamber of upper sand box is installed with upper mould frame, the inner chamber of upper mould frame is installed with upper mould seat, compared with prior art, the utility model designs this special precoated sand sand box of planetary carrier and tooling and precoated sand shell mould are matched, improve production efficiency, and precoated sand casting can reduce the processing amount of casting, improve processing efficiency;While reducing the amount of use of resin sand, reduce production cost, and it is convenient for existing real-time temperature measurement and rapid cooling operation, it is convenient and effective to control the cooling of casting, so as to facilitate the stress of product can be released in sand mould, thereby meet the high-precision casting requirement of casting, effectively improve the casting effect.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine planetary carrier technology, and in particular to a casting device for a first-stage lightweight planetary carrier of a wind turbine generator set. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. The wind turbine gearbox is a crucial component of a wind turbine. In modern industrial design, the weight of the wind turbine gearbox planetary carrier is reduced without compromising its overall performance. This lightweight design not only improves efficiency and reduces losses but also saves materials, reduces transportation costs, and achieves greater economic benefits.

[0003] Lightweight wind turbine planetary carriers are manufactured using casting processes. Traditional lightweight planetary carrier casting uses a large amount of sand, resulting in high production costs. Furthermore, the temperature of traditional planetary carriers cannot be monitored during casting, leading to ineffective control of casting cooling and failure to release stress within the sand mold. Consequently, it fails to meet the requirements for high-precision casting. To address this issue, we provide a primary lightweight planetary carrier casting device for wind turbine generators. Utility Model Content

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a lightweight planetary carrier casting device for the first stage of a wind turbine generator set.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a lightweight planetary carrier casting device for a wind turbine generator set, including a lower sand box and an upper sand box. The upper sand box is located at the upper end of the lower sand box. A lower mold frame is provided in the inner cavity of the lower sand box, and a lower mold base is installed in the inner cavity of the lower mold frame. An upper mold frame is installed in the inner cavity of the upper sand box, and an upper mold base is installed in the inner cavity of the upper mold frame. An upper coated sand shell and a lower coated sand shell are respectively provided in the inner cavities of the upper mold base and the lower mold base. Three sets of protruding slots are provided at the bottom of the inner cavity of the lower coated sand shell, and temperature measuring components are filled in the inner cavities of the protruding slots. The temperature measuring component includes a disc filled in the inner cavity of a groove. The lower end of the disc is integrally connected to a circular tube. The lower end of the circular tube passes through the groove and extends through the lower mold base to its lower end. A temperature sensor probe is installed in the inner cavity of the circular tube. The top of the temperature sensor probe is in contact with the lower end of the disc.

[0006] In a further preferred embodiment, the inner cavity of the lower mold base is provided with a cooling chamber, the lower end of the cooling chamber is provided with a liquid inlet and a liquid outlet, and the lower end of the cooling chamber is equipped with a liquid inlet pipe and a liquid outlet pipe corresponding to the positions of the liquid inlet and the liquid outlet, respectively.

[0007] In a further preferred embodiment, both sides of the lower mold base are provided with integrated support blocks, and both sides of the inner cavity of the lower mold frame are provided with mounting grooves that engage with the support blocks.

[0008] In a further preferred embodiment, the upper end of the lower sand box is provided with threaded grooves, and the lower mold frame is fixed to the threaded grooves by bolts on all four sides.

[0009] In a further preferred embodiment, the upper end of the upper coated sand shell is equidistantly connected with upper positioning posts, and the upper ends of the upper mold frame and the upper mold base are equidistantly provided with corresponding first positioning holes. The upper end of each upper positioning post passes through the first positioning hole at the upper end of the upper mold frame and the upper mold base and is fitted with a limit sleeve.

[0010] In a further preferred embodiment, the lower end of the lower coated sand shell is provided with lower positioning posts at equal intervals, and the upper end of the lower mold base is provided with second positioning holes that are inserted into it at equal intervals.

[0011] The advantages and beneficial effects of this utility model are as follows: 1. By designing an upper mold frame in the inner cavity of the upper sand box, and installing an upper mold base that matches the shape of the upper coated sand shell in the inner cavity of the upper mold frame, and screwing a lower mold frame in the lower sand box, and snapping a detachable lower mold base that matches the shape of the lower coated sand shell in the inner cavity of the lower mold frame, it is convenient to design a special coated sand box for this planetary frame and tooling (upper mold frame, upper mold base, lower mold frame and lower mold base) to match the coated sand shell mold during casting, thereby improving production efficiency. Moreover, coated sand casting can reduce the amount of processing of castings and improve processing efficiency; at the same time, it reduces the amount of resin sand used and reduces production costs. 2. The disc continuously conducts heat to the temperature sensor probe after contacting the liquid metal, which continuously monitors the temperature of the cast product and transmits the data to an external temperature monitoring terminal. The average of temperatures detected by multiple temperature sensor probes is calculated to obtain the real-time temperature during the product's casting cooling process. Simultaneously, the lower coated sand shell transfers the heat from the casting process to the lower mold base. External cooling water is injected into the cooling chamber through the inlet pipe, and then drained from the outlet pipe, creating a continuous flow of cooling water. The cooling water in the cooling chamber exchanges heat with the lower mold base, absorbing heat and rapidly releasing it as hot water. New cooling water continuously enters the cooling chamber for heat absorption and cooling. By monitoring the real-time temperature of the product during the cooling process, the cooling of the casting can be effectively controlled. When the temperature reaches the set range, the cooling water flow stops, allowing the stress in the product to be released within the sand mold, thus meeting the requirements for high-precision casting and effectively improving the casting effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model; Figure 2 This is a schematic diagram of the overall exploded three-dimensional structure proposed in this utility model; Figure 3 This is a three-dimensional exploded view of the upper sand box, upper mold frame, upper mold base, and upper coated sand shell proposed in this utility model. Figure 4 This is a three-dimensional exploded view of the lower coated sand shell, lower sand box, and lower mold frame proposed in this utility model. Figure 5 This is a three-dimensional exploded view of the lower coated sand shell, lower sand box, and lower mold base proposed in this utility model. Figure 6 This is a three-dimensional exploded cross-sectional view of the lower coated sand shell and lower mold base portion proposed in this utility model; Figure 7 This is a half-sectional three-dimensional structural diagram of the temperature measuring component proposed in this utility model.

[0013] In the diagram: 1. Lower sand box; 2. Upper sand box; 3. Upper mold frame; 4. Lower mold frame; 5. Lower coated sand shell; 6. Upper coated sand shell; 7. Upper positioning post; 8. Limiting sleeve; 9. First positioning hole; 10. Bolt; 11. Threaded groove; 12. Raised groove; 13. Lower positioning post; 14. Mounting groove; 15. Lower mold base; 16. Upper mold base; 17. Second positioning hole; 18. Support block; 19. Temperature measuring component; 191. Disc; 192. Circular tube; 193. Temperature sensor probe; 20. Cooling chamber; 21. Liquid inlet pipe; 22. Liquid outlet pipe. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0015] Reference Figure 1-7 As shown, a lightweight planetary carrier casting device for a wind turbine generator set includes a lower sand box 1 and an upper sand box 2. The upper sand box 2 is located at the upper end of the lower sand box 1. The lower sand box 1 has a lower mold frame 4 in its inner cavity. The upper end of the lower sand box 1 is provided with threaded grooves 11. The lower mold frame 4 is fixed to the threaded grooves 11 by bolts 10 around its perimeter.

[0016] The lower mold frame 4 is bolted to the upper threaded groove 11 of the lower sand box 1 using bolts 10, which facilitates detachable assembly, operation, and use.

[0017] The lower mold base 15 is installed in the inner cavity of the lower mold frame 4. Support blocks 18 are integrally connected on both sides of the lower mold base 15. Mounting grooves 14 that engage with the support blocks 18 are provided on both sides of the inner cavity of the lower mold frame 4.

[0018] During installation, the lower mold base 15 is engaged with the mounting groove 14 inside the lower mold frame 4 by the support blocks 18 on both sides, which facilitates installation and disassembly and makes it easy to use.

[0019] The upper mold frame 3 is installed in the inner cavity of the upper sand box 2. The upper mold base 16 is installed in the inner cavity of the upper mold frame 3. The upper mold base 16 and the lower mold base 15 are respectively provided with upper coated sand shell 6 and lower coated sand shell 5. The upper end of the upper coated sand shell 6 is connected with upper positioning pins 7 at equal intervals. The upper ends of the upper mold frame 3 and the upper mold base 16 are provided with corresponding first positioning holes 9 at equal intervals. The upper end of each upper positioning pin 7 passes through the first positioning hole 9 at the upper end of the upper mold frame 3 and the upper mold base 16 and is fitted with a limit sleeve 8.

[0020] The upper coated sand shell 6 is fixed by the upper positioning post 7 passing through the first positioning hole 9 and then the limiting sleeve 8 during assembly, which facilitates stable casting in the future.

[0021] The lower end of the lower coated sand shell 5 is equidistantly equipped with lower positioning posts 13, and the upper end of the lower mold base 15 is equidistantly provided with second positioning holes 17 for insertion.

[0022] The lower coated sand shell 5 is inserted into the inner cavity of the second positioning hole 17 at the upper end of the lower mold base 15 through the lower positioning post 13, which facilitates the positioning and installation of the lower coated sand shell 5. After the upper sand box 2 and the lower sand box 1 are fitted together, the upper coated sand shell 6 positioned in the inner cavity of the upper mold base 16 and the lower coated sand shell 5 in the inner cavity of the lower mold base 15 are precisely positioned and fitted together, which effectively improves the assembly efficiency of the lower coated sand shell 5 and the upper coated sand shell 6, and enhances the casting effect of the product.

[0023] The bottom of the inner cavity of the lower coated sand shell 5 is provided with three sets of protruding slots 12. The inner cavity of each protruding slot 12 is filled with a temperature measuring component 19. The temperature measuring component 19 includes a disc 191 filled in the inner cavity of the protruding slot 12. The lower end of the disc 191 is integrally connected to a circular tube 192. The lower end of the circular tube 192 passes through the protruding slot 12 and extends through the lower mold base 15 to its lower end. A temperature sensor probe 193 is installed in the inner cavity of the circular tube 192. The top of the temperature sensor probe 193 is in contact with the lower end of the disc 191.

[0024] The lower mold base 15 has a cooling chamber 20 in its inner cavity. The lower end of the cooling chamber 20 has a liquid inlet and a liquid outlet. The lower end of the cooling chamber 20 is equipped with a liquid inlet pipe 21 and a liquid outlet pipe 22, which correspond to the positions of the liquid inlet and the liquid outlet, respectively.

[0025] During casting, the inner cavity of the lower coated sand shell 5 is filled with liquid metal. Both the disc 191 and the tube 192 are made of high-temperature resistant ceramic material, and continuous heat conduction occurs between them upon contact with the liquid metal. The temperature sensor probe 193 at the lower end of the disc 191 continuously monitors the temperature of the cast product and transmits this data to an external temperature monitoring terminal. The average temperature detected by multiple temperature sensor probes 193 is calculated to obtain the real-time temperature during the product casting cooling process. The lower coated sand shell 5 also conducts heat, transferring the heat from the casting process to the lower mold base 15. The inner cavity of the cooling chamber 20 is filled with water. When rapid cooling of the product is required, external cooling water is supplied from… The inlet pipe 21 fills the inner cavity of the cooling chamber 20, allowing the water in the cooling chamber 20 to be discharged from the outlet pipe 22. This allows the cooling water in the cooling chamber 20 to flow in and out. The cooling water in the inner cavity of the cooling chamber 20 exchanges heat with the lower mold base 15, and the absorbed heat is quickly discharged as hot water. New cooling water continuously enters the cooling chamber 20 for heat absorption and cooling. The real-time temperature during the cooling process is monitored to effectively control the cooling of the casting. When the temperature reaches the set range, the flow of cooling water stops, allowing the stress of the product to be released within the sand mold. This meets the requirements of high-precision casting and effectively improves the casting effect.

[0026] Working principle: In use, this utility model is connected to an external cooling water input device and an inlet pipe 21 by screws, and to an outlet pipe 22 by a drain pipe. It is also connected to an external temperature monitoring terminal and a temperature sensor probe 193. During lightweight planetary carrier casting, the lower mold frame 4 is screwed to the upper threaded groove 11 of the lower sand box 1 using bolts 10. When installing the lower mold base 15, the support blocks 18 on both sides are engaged with the mounting groove 14 inside the lower mold frame 4. Subsequently, the lower coated sand shell 5 is inserted into the lower positioning post 13. The inner cavity of the second positioning hole 17 at the upper end of the mold base 15 facilitates the positioning and installation of the lower coated sand shell 5. The upper coated sand shell 6 passes through the first positioning hole 9 via the upper positioning post 7 and is then fitted with the limiting sleeve 8 for easy positioning and fixation. This allows for precise positioning and fitting between the upper sand box 2 and the lower sand box 1, with the upper coated sand shell 6 positioned in the inner cavity of the upper mold base 16 and the lower coated sand shell 5 in the inner cavity of the lower mold base 15. This effectively improves the assembly efficiency of the lower coated sand shell 5 and the upper coated sand shell 6, and enhances the casting effect of the product. After casting, the inner cavity of the lower coated sand shell 5 is filled with... After the liquid metal is filled, the disk continuously conducts heat upon contact with the liquid metal. Meanwhile, the temperature sensor probe 193 at the lower end of the disk 191 continuously monitors the temperature of the cast product and transmits this data to an external temperature monitoring terminal. The average of the temperatures detected by multiple temperature sensor probes 193 is calculated to obtain the real-time temperature during the product casting cooling process. The lower coated sand shell 5 also conducts heat, transferring the heat from the product casting process to the lower mold base 15. External cooling water is injected into the inner cavity of the cooling chamber 20 through the inlet pipe 21, causing the water in the cooling chamber 20 to be discharged through the drain pipe 22, thus cooling the product. Cooling water flows in and out of cooling chamber 20. The cooling water inside cooling chamber 20 exchanges heat with the lower mold base 15, and the absorbed heat is quickly discharged as hot water. New cooling water continuously enters cooling chamber 20 for heat absorption and cooling. The real-time temperature during the cooling process is monitored to effectively control the cooling of the casting. When the temperature reaches the set range, the flow of cooling water stops, allowing the stress of the product to be released within the sand mold. This meets the requirements of high-precision casting and effectively improves the casting effect.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lightweight planetary carrier casting device for a wind turbine generator set, comprising a lower sand box and an upper sand box, characterized in that, The upper sand box is located above the lower sand box. The lower sand box has a lower mold frame inside its cavity. The lower mold frame has a lower mold base inside its cavity. The upper sand box has an upper mold frame inside its cavity. The upper mold frame has an upper mold base inside its cavity. The upper mold base and the lower mold base have upper and lower coated sand shells inside their respective cavities. The bottom of the lower coated sand shell has three sets of protruding slots. The cavities of the protruding slots are all filled with temperature measuring components. The temperature measuring component includes a disc filled in the inner cavity of a groove. The lower end of the disc is integrally connected to a circular tube. The lower end of the circular tube passes through the groove and extends through the lower mold base to its lower end. A temperature sensor probe is installed in the inner cavity of the circular tube. The top of the temperature sensor probe is in contact with the lower end of the disc.

2. The lightweight planetary carrier casting device for a wind turbine generator set according to claim 1, characterized in that, The lower mold base has a cooling chamber in its inner cavity. The lower end of the cooling chamber has a liquid inlet and a liquid outlet. The lower end of the cooling chamber is equipped with a liquid inlet pipe and a liquid outlet pipe that correspond to the positions of the liquid inlet and the liquid outlet, respectively.

3. The lightweight planetary carrier casting device for a wind turbine generator set according to claim 1, characterized in that, Both sides of the lower mold base are provided with integrated support blocks, and both sides of the inner cavity of the lower mold frame are provided with mounting grooves that engage with the support blocks.

4. The lightweight planetary carrier casting device for a wind turbine generator set according to claim 1, characterized in that, The upper end of the lower sand box is provided with threaded grooves, and the lower mold frame is fixed to the threaded grooves by bolts on all four sides.

5. The lightweight planetary carrier casting device for a wind turbine generator set according to claim 1, characterized in that, The upper end of the upper coated sand shell is equidistantly connected with upper positioning posts, and the upper ends of the upper mold frame and the upper mold base are equidistantly provided with corresponding first positioning holes. The upper end of each upper positioning post passes through the first positioning hole at the upper end of the upper mold frame and the upper mold base and is fitted with a limit sleeve.

6. The lightweight planetary carrier casting device for a wind turbine generator set according to claim 1, characterized in that, The lower end of the lower coated sand shell is equidistantly equipped with lower positioning posts, and the upper end of the lower mold base is equidistantly provided with second positioning holes for insertion.

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