Conical cage expansion device

Abstract

This utility model discloses a conical cage expansion device, relating to the technical field of wind turbine cage expansion. It includes an expansion lower template, an expansion die body at the top of the expansion lower template, a limit ring at the middle of the top of the expansion die body, an expansion punch body at the top of the limit ring, a product to be expanded on the outer side of the limit ring, and the inner side of the product to be expanded fitting against the outer side of the expansion punch body. An expansion die insert is provided on the outer side of the product to be expanded. During the mold closing and docking of the expansion lower template and the expansion upper template, the conical cage expansion device uses a hydraulic rod to push downwards, and then the expansion upper template moves downwards synchronously. The expansion upper template moves along the guide of the ball bearing guide post, thereby ensuring stable mold closing between the expansion upper template and the expansion lower template, avoiding positional displacement during the guiding process, and increasing the accuracy of the guiding docking.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine cage expansion, specifically a conical cage expansion device. Background Technology

[0002] The conical cage expansion device is mainly designed according to the product size, and the upper expansion mold plate is equipped with guide pillars and guide sleeves when closing with the lower mold plate to prevent expansion offset. The lower mold plate is equipped with equal height pillars according to the number of product windows to prevent tilting and product warping when the upper and lower molds are closed. In use, because traditional cage expansion equipment is not convenient for positioning the inner wind turbine cage, positional offset may occur when closing the mold.

[0003] To overcome the aforementioned defects, existing technology (Chinese Patent No. CN213145114U, Publication Date: 2021-05-07) discloses a split-type low-wear cage for wind turbine pitch turntable bearings. The cage is positioned between the inner and outer ring flanges of the bearing, and is a split-type cage. The split-type cage consists of equally divided arc-shaped frames, with evenly distributed pockets in the middle of each arc-shaped frame segment. A central beam connects each adjacent pocket, and each arc-shaped frame segment is broken at the center of the pockets at both ends, forming end half-pockets. By designing the cage as a split structure at the pockets, the strength of the central beam is improved, reducing tension or compression during operation. The special adjacent split-type structure design avoids jamming wear caused by contact between adjacent split-type cages.

[0004] The aforementioned mechanism can improve the strength of the intermediate beam of the cage by using a split structure. However, during the processing, when the upper and lower mold plates of the cage are closed, positional misalignment may occur, resulting in inaccurate mold closure and affecting the overall stability during use. Utility Model Content

[0005] The purpose of this invention is to provide a conical cage expansion device to solve the problem mentioned in the background art that during the processing, the upper and lower mold plates of the cage may shift in position, resulting in inaccurate mold closing and affecting the overall stability during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a conical cage expansion device, comprising an expansion lower template, an expansion die body at the top of the expansion lower template, a limit ring installed at the middle position of the top of the expansion die body, an expansion punch body at the top of the limit ring, a product to be expanded on the outer side of the limit ring, the inner side of the product to be expanded fitting against the outer side of the expansion punch body, an expansion die insert on the outer side of the product to be expanded, the expansion die insert being disposed at the top of the expansion lower template, and an expansion die insert being installed at each of the four corners of the top of the expansion lower template. The device has ball bearing guide pillars, and an expansion upper template is sleeved on the outer side of the ball bearing guide pillars. An expansion punch pad is installed at the middle position of the bottom end of the expansion upper template, and an expansion equalizing block is fixedly connected to the top end of the expansion upper template. A first expansion mold support plate is distributed at equal angles on the top end of the expansion equalizing block, and a second expansion mold support plate is fixedly connected to the top end of the first expansion mold support plate. An installation frame is installed at the middle position of the bottom end of the expansion lower template, and a limiting mechanism for fixing the product to be expanded is provided inside the installation frame. Positioning mechanisms for preventing device displacement are installed at the four corners of the side of the expansion lower template.

[0007] Furthermore, a drive motor is provided on the side of the mounting bracket, and a threaded rod is installed at the output end of the drive motor through a sprocket transmission mechanism. A movable block is threadedly connected to the outer side of the threaded rod, and a limit bracket is installed at the top of the movable block.

[0008] Furthermore, the side of the limiting frame is in contact with the side of the drive motor, and the limiting frame is symmetrically distributed about the central axis of the vertical direction of the expansion lower template.

[0009] Furthermore, a slide rail is provided at the bottom of the mounting bracket, and a slider that matches the slide rail is fixedly connected to the bottom of the movable block. The movable block and the mounting bracket are connected by the slide rail and the slider to form a sliding mechanism.

[0010] Furthermore, the positioning mechanism includes a fixing plate, which is fixedly connected to the side of the expansion lower template. A fixing rod is installed at the middle position of the bottom end of the fixing plate, and a suction cup is installed at the bottom end of the fixing rod. A piston is slidably connected inside the fixing rod, and a pull rod is fixedly connected to the top end of the piston. The top end of the pull rod extends to the top of the fixing plate. Pressing plates are installed on the sides of the expansion lower template.

[0011] Furthermore, a connecting spring is wound around the upper end of the outer side of the pull rod, and the fixing plate and the pull rod form an elastic structure through the connecting spring.

[0012] Furthermore, an exhaust hole is provided at the middle position of the top of the fixing plate, and a sealing gasket matching the exhaust hole is provided at the top of the fixing plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. When the expansion lower mold plate and expansion upper mold plate are closed and connected, the hydraulic rod is pushed down, and then the expansion upper mold plate is moved down synchronously. The expansion upper mold plate moves along the guide of the ball guide post, so that the expansion upper mold plate and expansion lower mold plate can be closed stably, avoiding positional deviation during the guiding process and increasing the accuracy of guiding and connecting.

[0014] Furthermore, the output of the drive motor can drive the threaded rod to rotate. The threaded rod is threadedly connected to the movable block, which causes the movable block to be driven and moved synchronously. During the movement, the movable block will drive the limiting frame to move towards the product to be expanded, so that the side of the limiting frame can fit with the side of the product to be expanded. This fixes the position of the product to be expanded from the corner, effectively preventing the product to be expanded from shifting due to force when installing the equal-height column.

[0015] Furthermore, as the movable block moves, it causes the slider to slide inside the slide rail. By utilizing the sliding connection between the mounting bracket and the movable block, the angle of the movable block will not deflect during movement, thus making the movement of the movable block more stable.

[0016] 2. By pressing down on the pressing plate and simultaneously pressing and pushing the pull rod, the piston will be pushed forward. The piston will then squeeze and expel the gas at the lower end of the fixed rod and the gas inside the suction cup. By using the piston to squeeze and expel the gas, the inside of the suction cup can be kept in a vacuum state, thereby achieving positional positioning.

[0017] Furthermore, the piston and pull rod will automatically reset due to the elasticity of the connecting spring, which allows the piston to simultaneously compress the air at the top of the fixed rod and discharge it through the exhaust port, keeping the interior of the fixed rod and suction cup in a vacuum state. When the exhaust port is not in use, the sealing gasket will keep it sealed by the elasticity of the connecting spring, thereby reducing the amount of gas entering the interior of the fixed rod and suction cup. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model.

[0019] Figure 2 This is a frontal sectional view of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of this utility model from a bottom view.

[0021] Figure 4This is a schematic diagram of the positioning mechanism of this utility model.

[0022] Figure 5 This is a schematic diagram of the clamping mechanism of this utility model.

[0023] Figure 6 This is a partially enlarged structural diagram of the positioning mechanism of this utility model.

[0024] Figure 7 This is a structural diagram of the present invention in use.

[0025] In the diagram: 1. Lower expansion mold plate; 2. Ball bearing guide post; 3. Upper expansion mold plate; 4. Product to be expanded; 5. Fixing rod; 6. Suction cup; 7. Fixing plate; 8. Pull rod; 9. Piston; 10. Connecting spring; 11. Vent hole; 12. Sealing gasket; 13. Mounting bracket; 14. Drive motor; 15. Threaded rod; 16. Movable block; 17. Limiting bracket; 18. Slide rail; 19. Slider; 20. Pressing plate; 21. First expansion mold support plate; 22. Expansion leveling block; 23. Expansion punch pad; 24. Expansion punch body; 25. Expansion die insert; 26. Expansion die body; 27. Limiting ring; 28. Second expansion mold support plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: As Figure 1-3 and Figure 7The technical solution shown addresses the issue of inaccurate mold closing due to potential positional misalignment during the mold closing of the upper and lower mold plates of the retainer, which affects the overall accuracy during use. The conical retainer expansion device discloses a guiding and docking mechanism, including an expansion lower mold plate 1. An expansion die body 26 is located at the top of the expansion lower mold plate 1, and a limit ring 27 is installed at the middle position of the top of the expansion die body 26. An expansion punch body 24 is located at the top of the limit ring 27, and the product to be expanded 4 is located outside the limit ring 27, with the inner side of the product to be expanded 4 aligned with the outer side of the expansion punch body 24. The expansion die insert 25 is provided on the outer side of the product 4 to be expanded, and the expansion die insert 25 is provided at the top of the expansion lower template 1. Ball guide pillars 2 are installed at the four corners of the top of the expansion lower template 1, and an expansion upper template 3 is sleeved on the outer side of the ball guide pillars 2. An expansion punch pad 23 is installed at the middle position of the bottom end of the expansion upper template 3, and an expansion equalization block 22 is fixedly connected to the top of the expansion upper template 3. A first expansion mold support plate 21 is distributed at equal angles on the top of the expansion equalization block 22, and a second expansion mold support plate 28 is fixedly connected to the top of the first expansion mold support plate 21.

[0028] In this example, such as Figure 1 and Figure 7 As shown, the product to be expanded 4 is placed on the top of the lower expansion mold 1, and then the equal-height column is installed on the surface of the product to be expanded 4. Then, the upper expansion mold 3 and the lower expansion mold 1 are closed to achieve the docking of the cage. When the lower expansion mold 1 and the upper expansion mold 3 are docked, the hydraulic rod is pushed down, and then the upper expansion mold 3 is moved down synchronously. The upper expansion mold 3 moves along the guide of the ball guide post 2, so that the upper expansion mold 3 and the lower expansion mold 1 can be stably closed, avoiding positional deviation during the guiding process and increasing the accuracy of the guiding docking.

[0029] Example 2: Figure 1 , Figure 2 and Figure 4The technical solution shown addresses the problem of potential positional center misalignment of the product 4 during placement, leading to inaccurate subsequent docking. The conical retainer expansion device discloses a limiting mechanism. A mounting frame 13 is installed at the middle position of the bottom end of the lower expansion template 1, and the mounting frame 13 contains a limiting mechanism for fixing the product 4 to be expanded. The limiting mechanism includes the mounting frame 13, which is fixedly connected to the middle position of the bottom end of the lower expansion template 1. A drive motor 14 is provided on the side of the mounting frame 13, and the output of the drive motor 14... A threaded rod 15 is installed at the end via a sprocket transmission mechanism. A movable block 16 is threadedly connected to the outer side of the threaded rod 15, and a limit frame 17 is installed at the top of the movable block 16. The side of the limit frame 17 is in contact with the side of the drive motor 14, and the limit frame 17 is symmetrically distributed about the vertical central axis of the expansion lower template 1. A slide rail 18 is provided at the bottom inside the mounting frame 13, and a slider 19 matching the slide rail 18 is fixedly connected to the bottom of the movable block 16. The movable block 16 and the mounting frame 13 form a sliding mechanism through the sliding connection of the slide rail 18 and the slider 19.

[0030] In this example, such as Figure 5 As shown, the output end of the drive motor 14 can drive the threaded rod 15 to rotate. The threaded rod 15 is threadedly connected to the movable block 16, so that the movable block 16 will be driven synchronously and move. During the movement, the movable block 16 will drive the limiting frame 17 to move towards the product to be expanded 4, so that the side of the limiting frame 17 can fit with the side of the product to be expanded 4, thereby fixing the position of the product to be expanded 4 from the corner, effectively preventing the position of the product to be expanded 4 from shifting due to force during the installation of the equal height column; and during the movement, the movable block 16 will drive the slider 19 to slide inside the slide rail 18. The sliding connection between the mounting frame 13 and the movable block 16 ensures that the angle of the movable block 16 will not deflect during the movement, thus making the movement of the movable block 16 more stable.

[0031] Example 3: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6The technical solution shown addresses the issue of potential overall misalignment caused by vibration during mold closing and connection in actual use of the device. The conical retainer expansion device discloses a positioning mechanism. Positioning mechanisms to prevent device misalignment are installed at the four corners of the lower expansion template 1. The positioning mechanism includes a fixed plate 7, which is fixedly connected to the side of the lower expansion template 1. A fixed rod 5 is installed at the middle of the bottom end of the fixed plate 7, and a suction cup 6 is installed at the bottom end of the fixed rod 5. A piston 9 is slidably connected inside the fixed rod 5, and a pull rod 8 is fixedly connected to the top of the piston 9. The top of the pull rod 8 extends above the fixed plate 7. Pressing plates 20 are installed on the sides of the lower expansion template 1. A connecting spring 10 is wound around the upper outer end of the pull rod 8, and the fixed plate 7 and the pull rod 8 form an elastic structure through the connecting spring 10. An exhaust hole 11 is opened at the middle of the top of the fixed plate 7, and a sealing gasket 12 matching the exhaust hole 11 is provided at the top of the fixed plate 7.

[0032] In this example, such as Figure 6 As shown, pressing down on the pressing plate 20 simultaneously pushes the pull rod 8 forward. When the pull rod 8 is pressed forward, the piston 9 is pushed forward simultaneously. The piston 9 then squeezes out the gas at the lower end of the fixed rod 5 and the gas inside the suction cup 6. By squeezing out the gas with the piston 9, the suction cup 6 can be kept in a vacuum state, thereby achieving positional positioning. The piston 9 and the pull rod 8 will automatically reset by the elastic force of the connecting spring 10, so that the piston 9 can simultaneously squeeze out the air at the upper end of the fixed rod 5 and discharge it through the exhaust hole 11, keeping the fixed rod 5 and the suction cup 6 in a vacuum state. When the exhaust hole 11 is not in use, the sealing gasket 12 will be kept sealed by the elastic force of the connecting spring 10, thereby reducing the amount of gas entering the fixed rod 5 and the suction cup 6.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A conical cage expansion device, comprising an expansion lower template (1), characterized in that: The top of the expansion lower template (1) is provided with an expansion die body (26), and a limiting ring (27) is installed at the middle position of the top of the expansion die body (26). The top of the limiting ring (27) is provided with an expansion punch body (24). The product to be expanded (4) is provided on the outside of the limiting ring (27), and the inner side of the product to be expanded (4) is in contact with the outer side of the expansion punch body (24). An expansion die insert (25) is provided on the outside of the product to be expanded (4), and the expansion die insert (25) is located on the expansion lower template (1). At the top of the expansion lower template (1), ball guides (2) are installed at the four corners of the top of the expansion lower template (1), and an expansion upper template (3) is sleeved on the outside of the ball guides (2). An expansion punch pad (23) is installed at the middle position of the bottom of the expansion upper template (3), and an expansion equal height block (22) is fixedly connected to the top of the expansion upper template (3). A first expansion mold support plate (21) is distributed at equal angles on the top of the expansion equal height block (22), and a second expansion mold support plate (28) is fixedly connected to the top of the first expansion mold support plate (21). An installation frame (13) is installed at the middle position of the bottom end of the expansion lower template (1), and the installation frame (13) is provided with a limiting mechanism for fixing the product (4) to be expanded. Positioning mechanisms to prevent device displacement are installed at the four corners of the side of the expansion lower template (1).

2. The conical cage expansion device according to claim 1, characterized in that: The limiting mechanism includes a mounting frame (13), which is fixedly connected to the middle position of the bottom end of the expansion lower template (1). A drive motor (14) is provided on the side of the mounting frame (13), and a threaded rod (15) is installed at the output end of the drive motor (14) through a sprocket transmission mechanism. A movable block (16) is threadedly connected to the outer side of the threaded rod (15), and a limiting frame (17) is installed at the top of the movable block (16).

3. The conical cage expansion device according to claim 2, characterized in that: The side of the limiting frame (17) is in contact with the side of the drive motor (14), and the limiting frame (17) is symmetrically distributed about the vertical central axis of the expansion lower template (1).

4. The conical cage expansion device according to claim 3, characterized in that: The bottom of the mounting bracket (13) is provided with a slide rail (18), and the bottom of the movable block (16) is fixedly connected with a slider (19) that matches the slide rail (18). The movable block (16) and the mounting bracket (13) are connected by the slide rail (18) and the slider (19) to form a sliding mechanism.

5. The conical cage expansion device according to claim 4, characterized in that: The positioning mechanism includes a fixing plate (7), which is fixedly connected to the side of the expansion lower template (1). A fixing rod (5) is installed at the middle position of the bottom end of the fixing plate (7), and a suction cup (6) is installed at the bottom end of the fixing rod (5). A piston (9) is slidably connected inside the fixing rod (5), and a pull rod (8) is fixedly connected to the top end of the piston (9). The top end of the pull rod (8) extends to the top of the fixing plate (7). Pressing plates (20) are installed on the sides of the expansion lower template (1).

6. The conical cage expansion device according to claim 5, characterized in that: A connecting spring (10) is wound around the upper end of the outer side of the pull rod (8), and the fixing plate (7) and the pull rod (8) form an elastic structure through the connecting spring (10).

7. The conical cage expansion device according to claim 6, characterized in that: An exhaust hole (11) is provided at the middle position of the top of the fixing plate (7), and a sealing gasket (12) matching the exhaust hole (11) is provided at the top of the fixing plate (7).

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