Large wind power gear box component casting tooling

Abstract

This utility model relates to the field of casting and discloses a casting fixture for large wind turbine gearbox components, including a sand box. A scraper assembly is installed on the sand box, and the scraper assembly includes a conveyor belt with two pulleys driven to it. Each pulley is hinged with a collection box. Scraper bodies are provided on both sides of the conveyor belt, and first baffles are fixedly connected to both ends of the scraper bodies. The first baffles and scraper bodies are slidably connected to the sand box, and the first baffles are fixedly connected to the collection boxes. This utility model uses the scraper assembly to perform molding sand leveling operations. The scraper assembly collects the molding sand scraped by the scraper bodies through the conveyor belt, and the conveyor belt uses the driving force provided by the rollers to transport the molding sand to the collection box. Finally, the molding sand is poured into the collection trough. This assembly not only avoids the problem of the scraper body being laborious to use due to the accumulation of molding sand, but also realizes the unified collection of the scraped molding sand, thus facilitating subsequent cleaning work.

Description

Technical Field

[0001] This utility model relates to the field of casting, and in particular to casting tooling for large wind turbine gearbox components. Background Technology

[0002] Wind turbine gearbox components are generally manufactured using sand casting. The sand box is the equipment used to hold the mold in sand casting. In practical applications, the part's pattern needs to be sculpted first, then placed in the sand box. Molding sand is then filled into the sand box for casting. After each mold is cast, the boxes can be closed for final casting. After the molding sand is filled into the sand box, it needs to be compacted and leveled. Currently, this is often done by scraping the molding sand on the sand box surface. However, the scraper structure used in existing sand boxes is very simple. During use, downward pressure needs to be applied manually to ensure the scraper adheres to the sand box surface. This is not only laborious but also unstable, easily leading to unevenness of the molding sand surface due to uneven force application during the leveling process.

[0003] Chinese utility model patent CN222020620U discloses a casting box for sand casting, in which a scraper is pressed against the surface of the sand box by the elastic force of a spring. This solution solves the problem of unstable force application caused by manual pressure application. However, this scraping mechanism still has the following disadvantages in actual use: 1. During the scraping process, if the scraper is not thick enough, the scraped molding sand will directly pass over the scraper and fall onto the surface of the scraped molding sand, resulting in failure to achieve the purpose of scraping. Although increasing the thickness of the scraper can prevent the scraped molding sand from passing over the scraper, it will cause the molding sand to accumulate in front of the scraper, creating greater resistance to the movement of the scraper and making the scraper very laborious to use; 2. The scraper of this scraping mechanism lacks a molding sand collection function, and the scraped molding sand is easy to scatter from the edge of the sand box, causing inconvenience to subsequent cleaning work. Utility Model Content

[0004] To address the technical problem of the lack of molding sand collection function in the sand box scraping mechanism and the accumulation of molding sand in front of the scraper causing difficulty in using the scraper, this utility model provides a casting fixture for large wind turbine gearbox components.

[0005] This utility model is achieved using the following technical solution: a casting fixture for large wind turbine gearbox components, including a sand box, on which a scraper assembly is installed. The scraper assembly includes a conveyor belt, on which two pulleys are driven and connected. Each pulley is hinged with a collection box. Scraper bodies are provided on both sides of the conveyor belt. First baffles are fixedly connected to both ends of the scraper bodies, and the first baffles and scraper bodies are slidably connected to the sand box. The first baffles are fixedly connected to the collection boxes.

[0006] Through the above technical solution, the scraper assembly uses the scraper body to perform molding sand leveling operation. The scraped molding sand passes over the scraper body and falls onto the conveyor belt. The conveyor belt is driven by the pulley to send the molding sand into the collection box. During the leveling operation, the first baffle prevents the molding sand from falling from the edge of the sand box.

[0007] As a further improvement to the above solution, a fixed frame is fixedly connected to one of the collection boxes, a second rotating shaft is hinged to the fixed frame, a roller is fixedly connected to the second rotating shaft and the roller is rotatably connected to the sand box, a first gear is fixedly connected to the top of the second rotating shaft, a second gear is meshed with the first gear, a third rotating shaft is fixedly connected to the second gear and is hinged to the collection box, and the third rotating shaft is fixedly connected to the pulley.

[0008] The above technical solution utilizes a fixed frame to install a second rotating shaft, and a roller and a first gear are installed on the second rotating shaft. During the leveling operation, the roller will roll along the side of the sand box, driving the first gear via the second rotating shaft. The first gear, via the second gear, drives a third rotating shaft, which in turn drives a pulley, providing driving force to the pulley.

[0009] As a further improvement to the above solution, the conveyor belt is connected to multiple support rollers, and the support rollers are hinged to the scraper body.

[0010] The above technical solution utilizes support rollers to assist in transmission and support the conveyor belt. The combination of multiple support rollers can keep the middle of the conveyor belt horizontal while keeping both ends inclined, thereby promoting the slippage of molding sand.

[0011] As a further improvement to the above solution, each of the two collection boxes is fixedly connected to a connecting block, a connecting rod is slidably connected to the connecting block, a first rotating shaft is fixedly connected to the bottom end of the connecting rod, a slider is hinged to the first rotating shaft, and the slider is slidably connected to the sand box.

[0012] The above technical solution utilizes a connecting block to connect the connecting rod and the collection box, and a first rotating shaft to connect the connecting rod and the slider.

[0013] As a further improvement to the above solution, a second baffle is fixedly connected to the top of the connecting rod, and a spring is sleeved on the connecting rod, with one end of the spring set on the second baffle and the other end set on the connecting block.

[0014] The above technical solution uses a second baffle to limit the spring and uses the spring's elasticity to apply pressure to the connecting block. This pressure is transmitted to the scraper body through the collection box, causing the scraper body to automatically adhere to the surface of the sand box.

[0015] As a further improvement to the above solution, a groove is provided on the sand box at the position corresponding to the slider.

[0016] The above technical solution utilizes a sliding groove to achieve a sliding connection between the slider and the sand box.

[0017] As a further improvement to the above solution, handles are fixedly connected to both outer walls of the sand box.

[0018] The above technical solution utilizes handles to move and transfer sand boxes.

[0019] As a further improvement to the above solution, a collection trough is provided on one side of the sand box.

[0020] The above technical solution utilizes a collection trough to collect the scraped molding sand in a unified manner.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a scraper assembly to perform molding sand leveling operations. The scraper assembly collects the molding sand scraped by the scraper body through a conveyor belt. The conveyor belt uses the driving force provided by the rollers to transport the molding sand to the collection box. Finally, the molding sand is poured into the collection trough. This assembly not only avoids the problem of the scraper body being laborious due to the accumulation of molding sand, but also realizes the unified collection of the scraped molding sand, thus facilitating the subsequent cleaning work. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the scraper assembly of this utility model;

[0024] Figure 3 for Figure 2 Enlarged view of the structure of region A in the middle;

[0025] Figure 4 This is a three-dimensional structural diagram of the material collection box of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the material collection box of this utility model from another angle.

[0027] Explanation of key symbols:

[0028] 1. Sand box; 11. Slide chute; 12. Handle; 2. Scraper assembly; 21. Conveyor belt; 22. Support roller; 23. Pulley; 24. Collection box; 25. Scraper body; 26. First baffle; 27. Connecting block; 28. Connecting rod; 29. ​​Second baffle; 210. Spring; 211. First rotating shaft; 212. Slider; 213. Fixing frame; 214. Second rotating shaft; 215. Roller; 216. First gear; 217. Second gear; 218. Third rotating shaft; 3. Collection trough. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] Example 1:

[0031] Please combine Figure 1 - Figure 5The large wind turbine gearbox component casting fixture of this embodiment includes a sand box 1, on which a scraper assembly 2 is installed. The scraper assembly 2 includes a conveyor belt 21, on which two pulleys 23 are drivenly connected. Each pulley 23 is hinged to a collection box 24. Scraper bodies 25 are provided on both sides of the conveyor belt 21. First baffles 26 are fixedly connected to both ends of the scraper bodies 25, and the first baffles 26 and the scraper bodies 25 are slidably connected to the sand box 1. The first baffles 26 are fixedly connected to the collection box 24. The scraper assembly 2 uses the scraper bodies 25 to perform a sand leveling operation. The scraped sand passes over the scraper bodies 25 and falls onto the conveyor belt 21. The pulleys 23 drive the conveyor belt 21 to send the sand into the collection box 24. During the leveling operation... The first baffle 26 prevents molding sand from falling from the edge of the sand box 1. A fixing frame 213 is fixedly connected to one of the collection boxes 24. A second rotating shaft 214 is hinged to the fixing frame 213. A roller 215 is fixedly connected to the second rotating shaft 214 and rolls on the sand box 1. A first gear 216 is fixedly connected to the top of the second rotating shaft 214. A second gear 217 is meshed on the first gear 216. A third rotating shaft 218 is fixedly connected to the second gear 217 and is hinged to the collection box 24. The third rotating shaft 218 is fixedly connected to the pulley 23. The second rotating shaft 214 is installed using the fixing frame 213, and the roller 215 and the first gear 216 are installed through the second rotating shaft 214. During the leveling operation, the roller 215... 5 rolls along the side of the sand box 1, driving the first gear 216 via the second shaft 214. The first gear 216 drives the third shaft 218 via the second gear 217, and the third shaft 218 drives the pulley 23, providing driving force for the pulley 23. Multiple support rollers 22 are connected to the conveyor belt 21, and the support rollers 22 are hinged to the scraper body 25. The support rollers 22 assist in the transmission and support of the conveyor belt 21. The combination of multiple support rollers 22 can keep the middle of the conveyor belt 21 horizontal and the two ends inclined, thereby promoting the sliding of molding sand. Connecting blocks 27 are fixedly connected to both collection boxes 24. Connecting rods 28 are slidably connected to the connecting blocks 27. The bottom end of the connecting rods 28 is fixedly connected to the first shaft 211, and a slider 21 is hinged to the first shaft 211. 2. The slider 212 is slidably connected to the sand box 1. The connecting rod 28 and the collection box 24 are connected by the connecting block 27. The connecting rod 28 and the slider 212 are connected by the first rotating shaft 211. The top of the connecting rod 28 is fixedly connected to the second baffle 29. A spring 210 is sleeved on the connecting rod 28. One end of the spring 210 is set on the second baffle 29, and the other end is set on the connecting block 27. The second baffle 29 limits the spring 210. The elastic force of the spring 210 applies pressure to the connecting block 27. This pressure is transmitted to the scraper body 25 through the collection box 24, so that the scraper body 25 automatically fits against the surface of the sand box 1. A groove 11 is opened on the sand box 1 at the position corresponding to the slider 212. The groove 11 is used to realize the sliding connection between the slider 212 and the sand box 1.Handles 12 are fixedly connected to both outer walls of the sand box 1, allowing for transport and transfer of the sand box 1. A collection trough 3 is provided on one side of the sand box 1 to collect the scraped molding sand.

[0032] The implementation principle of the casting fixture for large wind turbine gearbox components in this application embodiment is as follows: When using this utility model for molding sand leveling, the scraper body 25 can slide along the sand box 1, scraping off excess molding sand. The molding sand slides along the surface of the scraper body 25 onto the conveyor belt 21. During this process, the roller 215 rolls along the side of the sand box 1, driving the second rotating shaft 214 to rotate on the fixed frame 213. The second rotating shaft 214 drives the first gear 216, which in turn drives the third rotating shaft 218 via the second gear 217. The third rotating shaft 218 drives the pulley 23, which in turn drives the conveyor belt 21. The conveyor belt 21 delivers the molding sand into the collection box 24. When the sliding scraper body 25 reaches the end of the sand box 1, it can rotate around the first rotating shaft 21. 1. The scraper body 25 is deflected 90 degrees and slid to the side of the sand box 1, so that the molding sand in the conveyor belt 21, scraper body 25 and collection box 24 falls into the collection trough 3. The slide 11 is used to cooperate with the slider 212 to realize the sliding connection between the slider 212 and the sand box 1. The first baffle 26 is used to prevent the molding sand from falling from the edge of the sand box 1. The second baffle 29 is used to limit the spring 210. The elastic force of the spring 210 applies pressure to the connecting block 27. This pressure is transmitted to the scraper body 25 through the collection box 24, so that the scraper body 25 automatically fits the surface of the sand box 1. The connecting rod 28 is used to guide the connecting block 27. The support roller 22 is used to assist the transmission and support the conveyor belt 21. The handle 12 is used to facilitate the handling and transfer of the sand box 1.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A casting fixture for large wind turbine gearbox components, including a sand box (1), characterized in that, The sand box (1) is equipped with a scraper assembly (2), which includes a conveyor belt (21). Two pulleys (23) are connected to the conveyor belt (21). A collection box (24) is hinged on each pulley (23). Scraper bodies (25) are provided on both sides of the conveyor belt (21). A first baffle (26) is fixedly connected to both ends of the scraper body (25). The first baffle (26) and the scraper body (25) are slidably connected to the sand box (1). The first baffle (26) is fixedly connected to the collection box (24).

2. The casting fixture for large wind turbine gearbox components as described in claim 1, characterized in that, One of the collection boxes (24) is fixedly connected to a fixed frame (213), a second rotating shaft (214) is hinged to the fixed frame (213), a roller (215) is fixedly connected to the second rotating shaft (214), and the roller (215) is rotatably connected to the sand box (1). A first gear (216) is fixedly connected to the top of the second rotating shaft (214), a second gear (217) is meshed on the first gear (216), a third rotating shaft (218) is fixedly connected to the second gear (217), and the third rotating shaft (218) is hinged to the collection box (24) and fixedly connected to the pulley (23).

3. The casting fixture for large wind turbine gearbox components as described in claim 1, characterized in that, The conveyor belt (21) is connected to a plurality of support rollers (22), and the support rollers (22) are hinged to the scraper body (25).

4. The casting fixture for large wind turbine gearbox components as described in claim 1, characterized in that, Both of the collection boxes (24) are fixedly connected to a connecting block (27), and a connecting rod (28) is slidably connected to the connecting block (27). A first rotating shaft (211) is fixedly connected to the bottom end of the connecting rod (28). A slider (212) is hinged to the first rotating shaft (211), and the slider (212) is slidably connected to the sand box (1).

5. The casting fixture for large wind turbine gearbox components as described in claim 4, characterized in that, The top end of the connecting rod (28) is fixedly connected to a second baffle (29), and a spring (210) is sleeved on the connecting rod (28). One end of the spring (210) is set on the second baffle (29), and the other end is set on the connecting block (27).

6. The casting fixture for large wind turbine gearbox components as described in claim 4, characterized in that, A groove (11) is provided on the sand box (1) at the position corresponding to the slider (212).

7. The casting fixture for large wind turbine gearbox components as described in claim 6, characterized in that, Handles (12) are fixedly connected to both outer walls of the sand box (1).

8. The casting fixture for large wind turbine gearbox components as described in claim 7, characterized in that, A collection trough (3) is provided on one side of the sand box (1).

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