Improved positioning system for a fan foundation

Abstract

The application discloses an improved positioning system of a fan foundation, which comprises positioning templates, the positioning templates are in the shape of arc-shaped plates, the number of the positioning templates is several, adjacent positioning templates are connected to form a circular ring, a rear plate is connected to one side wall of the positioning template, a connecting screw rod is installed on the front side wall of the rear plate, and a connecting nut is arranged on the connecting screw rod. The front plate, the rear plate and the rotating shaft are arranged, so that concrete leakage can be effectively prevented, the sealing property of the joint of adjacent positioning templates is improved, the positioning templates are pushed open by the spiral force instead of manpower, and the linkage opening of the positioning templates is realized; the sleeve ring and the smoothing mechanism are arranged, so that the bottom plate can rotate along the fixing rod for one circle to smooth the periphery of the concrete surface, the traditional smoothing method of the surface of the fan foundation completely by manpower is changed, the smoothing speed of the concrete surface is improved, and the labor burden of the manpower is reduced.

Description

Technical Field

[0001] This invention relates to the field of wind turbine foundation construction technology, specifically to an improved positioning system for wind turbine foundations. Background Technology

[0002] A wind turbine foundation is a structure that connects to a wind turbine generator, serving as its base for fixation and protection. The foundation ensures the wind turbine generator is firmly anchored to the ground, preventing collapse. Current wind turbine foundations are circular, constructed by reinforcing steel and then pouring concrete in place. The concrete pouring process relies on formwork for positioning. This type of wind turbine foundation formwork is typically made of steel plates and consists of an upper and lower ring. The lower ring, located at the very bottom of the foundation, is formed by assembling several formwork units into a circular shape.

[0003] Currently, wind turbine foundation formwork units are connected by bolts during the assembly process. After the concrete has cured, the bolts need to be removed, and the formwork units need to be pried open manually or with the help of tools. Due to the large number of formwork units, the workload of opening the formwork is large, and it is time-consuming and labor-intensive to operate them one by one. In addition, during the pouring process, columns are needed to support and reinforce the outside of the formwork, and ladders are used to facilitate the movement of workers. However, due to the large number of columns used, the transportation cost is too high. Furthermore, before the concrete has cured, workers need to climb onto the surface of the wind turbine foundation to smooth the concrete surface. Manual smoothing is inefficient and must be completed before the concrete has cured. This process requires a lot of manpower and affects the progress of wind turbine foundation construction. Summary of the Invention

[0004] The purpose of this invention is to provide an improved positioning system for wind turbine foundations to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an improved positioning system for wind turbine foundations, comprising positioning templates, each positioning template being arc-shaped, and several positioning templates connected to form a ring. A rear side plate is connected to one side wall of each positioning template, and a connecting screw is installed on the front side wall of the rear side plate. A connecting nut is fitted onto the connecting screw, and a screw hole is formed on the rear side plate. A front side plate is connected to the other side wall of the positioning template, and a sealing gasket is connected to the rear side wall of the front side plate. Elongated holes are formed through the front side plate and the sealing gasket at positions corresponding to the connecting screw. A rotating shaft is formed through the front side plate at a position corresponding to the screw hole. A bearing is installed between the front side plate and the rotating shaft. An external thread is provided on the outer side wall of the rear end of the rotating shaft, and a transmission gear is connected to the front end of the rotating shaft. A fixing frame is connected to the top of the positioning template, and a fixing rod is connected to the top of the fixing frame. A groove is formed on the front side of the positioning template, and a support mechanism is provided inside the groove. A collar is fitted onto the fixing rod.

[0006] Preferably, the front and rear side plates are integrally connected to the positioning template, and the front and rear side plates on adjacent positioning templates overlap. The connecting screw passes through the elongated hole through the front side plate and is threadedly connected to the connecting nut. The outer diameter of the rear end of the rotating shaft is adapted to the inner diameter of the screw hole. The rotating shaft is threadedly connected to the rear side plate through the screw hole. There are two rotating shafts. The front end of one rotating shaft is connected to a crank handle, and the two rotating shafts are rotatably connected by a transmission gear.

[0007] Preferably, the fixing rod has slots on both sides of its sidewalls, the fixing rod is a curved round rod, and the bottom of the fixing rod is welded to the top of the positioning template via a fixing frame.

[0008] Preferably, the support mechanism includes two support rods connected by a crossbeam. A pin is inserted through the top of each support rod, and a foot is fitted onto the outer side of the bottom end of each support rod. A set screw is inserted through the outer wall of the foot, and a set screw hole is formed on the outer wall of the bottom end of the support rod corresponding to the position of the set screw. The support rod is connected to the crossbeam to form a ladder shape, and the top of the support rod is rotatably connected to the inner wall of the groove via the pin.

[0009] Preferably, the support leg is a hollow rectangular plate, the width of the inner wall of the support leg is adapted to the width of the bottom end of the support rod, the support leg is slidably connected to the support rod, and the set screw passes through the side wall of the support leg and is threadedly connected to the set screw hole.

[0010] Preferably, the collar includes a first side ring and a second side ring. The outer wall of the first side ring has a groove, and through grooves are formed on the upper sides of the groove. A smoothing mechanism is connected inside the groove. A handle is welded to the top of the second side ring. A hinge screw is provided through the first side ring and the second side ring. A hinge nut is sleeved on one end of the hinge screw. Rollers are installed on the inner walls of both the first and second side rings. Both the first and second side rings are semi-circular. The first and second side rings are rotatably connected by the hinge screw. The inner diameter of the first and second side rings is adapted to the outer diameter of the fixed rod. The first and second side rings are sleeved on the outside of the fixed rod and are slidably connected to the outer wall of the fixed rod.

[0011] Preferably, the height of the roller is adapted to the height of the slot, the roller is inserted into the slot, and the roller is in rolling contact with the inner wall of the slot.

[0012] Preferably, the smoothing mechanism includes a scraper, a base plate is connected to the bottom of the scraper, a slider is connected to one end of the scraper near the first side ring, positioning screws are connected to the outer walls of both ends of the slider, positioning nuts are sleeved on the positioning screws, the slider is integrally connected to the scraper, the slider is locked inside the slide groove to form a sliding connection, and the positioning screw passes through the slide groove side wall through the through groove and is threadedly connected to the positioning nut.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This improved positioning system for wind turbine foundations, through the installation of a front side plate, a rear side plate, and a rotating shaft, allows for stable splicing of adjacent positioning templates. The front side plate overlaps with the rear side plate during assembly, with the front plate inserted in front of the rear plate. A connecting bolt passes through a long hole in the front side plate and is threaded into a connecting nut. The end of the rotating shaft closest to the external thread is threaded into a bolt hole, achieving stable splicing of adjacent positioning templates. Furthermore, the front side plate seals the gaps between adjacent positioning templates, effectively preventing concrete leakage and enhancing the sealing of the spliced ​​templates. After the concrete has cured and the connecting nut is removed, the system... Turning the crank causes a shaft and a transmission gear to rotate, which in turn drives another transmission gear and shaft to rotate. Both shafts rotate and unscrew within the screw holes. Simultaneously, the shafts push the front side plate forward, separating it from the rear side plate on the adjacent positioning template. At the same time, the front side plate causes the positioning template to separate from the concrete outer wall. The screw force replaces manual pushing of the positioning template to open the mold. The positioning template is then pushed forward by the rear side plate, separating the adjacent positioning template on the other side. This achieves the coordinated opening of several positioning templates, making the mold opening faster and more convenient.

[0014] 2. This improved positioning system for wind turbine foundations, through the setting of a collar and a smoothing mechanism, involves fitting the first and second side rings onto a fixed rod, and locking the rollers in the slots on both sides of the fixed rod. Rotating the hinge nut compresses and secures the first and second side rings. The smoothing mechanism is then placed on the surface of the wind turbine foundation, with the base plate in contact with the concrete surface. Pushing the collar on the fixed rod via the handle causes the rollers to roll within the slots, thus moving the collar and the smoothing mechanism. This, in turn, causes the base plate to rotate one revolution along the fixed rod, smoothing the outer perimeter of the concrete surface. This changes the traditional method of relying entirely on manual smoothing of the wind turbine foundation surface, accelerating the smoothing process and reducing the labor burden.

[0015] 3. This improved positioning system for wind turbine foundations, by setting up a sliding groove, a sliding block, and a positioning screw, allows the sliding block to slide within the groove. The sliding block drives the scraper and the base plate to rotate around the center of the fixed rod, so that the bottom surface of the base plate just contacts the concrete surface. This enables the tilt angle adjustment function of the smoothing mechanism, making it suitable for smoothing concrete surfaces of wind turbine foundations with various inclinations. At the same time, the sliding block drives the positioning screw to slide within the through groove, and the sliding block can be pressed and positioned by screwing the positioning nut onto the positioning screw.

[0016] 4. This improved positioning system for wind turbine foundations, through the installation of a support mechanism, allows the support mechanism to rotate relative to the positioning template by pulling it outward after the positioning template is assembled. This pulls the support legs at the bottom of the support rod, causing the bottom of the support legs to contact the foundation pit ground. The support rod tilts relative to the positioning template, thus providing support and reinforcement. Furthermore, the support rod connects to the crossbeam to form a ladder shape, allowing the support mechanism to function as a ladder while supporting the positioning template. This enables the positioning template to independently provide both support and a ladder function, avoiding the hassle of installing additional columns and ladders. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the present invention; Figure 3 This is a schematic diagram of the support mechanism structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the front and rear side panels of the present invention; Figure 5 This is a side cross-sectional view of the connection between the fixing rod and the collar of the present invention; Figure 6 This is a schematic diagram of one side of the collar structure of the present invention; Figure 7 This is a schematic diagram of the other side of the collar structure of the present invention; Figure 8 This is a schematic diagram of the smoothing mechanism of the present invention.

[0018] In the diagram: 1. Positioning template; 2. Rear side plate; 21. Connecting screw; 22. Connecting nut; 23. Screw hole; 3. Front side plate; 31. Sealing gasket; 32. Long slot; 33. Rotating shaft; 34. Bearing; 35. External thread; 36. Transmission gear; 37. Handle; 4. Fixing bracket; 5. Fixing rod; 51. Slot; 6. Groove; 7. Support mechanism; 71. Support rod; 72. Crossbeam; 73. Pin; 74. Set screw hole; 75. Support leg; 76. Set screw; 8. Collar; 81. First side ring; 811. Slide groove; 812. Through groove; 82. Second side ring; 821. Handle; 83. Hinge screw; 84. Hinge nut; 85. Roller; 9. Smoothing mechanism; 91. Scraper; 92. Base plate; 93. Slider; 94. Positioning screw; 95. Positioning nut. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] like Figures 1 to 8As shown, the improved positioning system for wind turbine foundations in this embodiment includes a positioning template 1, which is an arc-shaped plate. Several positioning templates 1 are connected to form a ring, and a lower ring is formed by connecting several positioning templates 1 to position the lower layer of the wind turbine foundation during pouring. A rear side plate 2 is connected to one side wall of the positioning template 1, and a connecting screw 21 is installed on the front side wall of the rear side plate 2. A connecting nut 22 is fitted onto the connecting screw 21, and a screw hole 23 is provided on the rear side plate 2. The other side wall of the positioning template 1 is connected to... A front side plate 3 is attached, and a rear side plate 2 overlaps with the front side plate 3. A connecting screw 21 passes through the front side plate 3 and connects to a connecting nut 22, connecting the front side plate 3 and the rear side plate 2 to complete the splicing of adjacent positioning templates 1. A sealing gasket 31 made of rubber is connected to the rear side wall of the front side plate 3 for sealing the connection between the front side plate 3 and the rear side plate 2. Elongated holes 32 are opened through the front side plate 3 and the sealing gasket 31 at positions corresponding to the connecting screw 21. The elongated holes 32 are for the front side plate 3 when the positioning template 1 is opened. To provide space for the previous movement of the connecting screw 21, a rotating shaft 33 is provided through the front side plate 3 of a positioning template 1 at a position corresponding to the screw hole 23. A bearing 34 is installed between the front side plate 3 and the rotating shaft 33, and the rotating shaft 33 is rotatably connected to the front side plate 3 via the bearing 34. An external thread 35 is provided on the outer side wall of the rear end of the rotating shaft 33. Two transmission gears 36 are connected to the front end of the rotating shaft 33, and the two transmission gears 36 mesh with each other. A fixing frame 4 is connected to the top of the positioning template 1 and is welded to the... On the upper surface of the positioning template 1, a fixing rod 5 is connected to the top of the fixing frame 4. The fixing rod 5 is used to support the collar 8 to rotate one revolution around the lower ring. A groove 6 is opened on the front side of the positioning template 1. The groove 6 is used to house the support mechanism 7. The support mechanism 7 is set inside the groove 6. After the support mechanism 7 rotates out of the groove 6, it is used to support and reinforce the positioning template 1, and also to be used as a ladder. A collar 8 is fitted on the fixing rod 5. The collar 8 moves on several fixing rods 5 to drive the smoothing mechanism 9 to smooth the concrete surface.

[0023] Specifically, both the front side plate 3 and the rear side plate 2 are integrally connected to the positioning template 1. The front side plate 3 and the rear side plate 2 on adjacent positioning templates 1 overlap, and the front side plate 3 seals the gap between adjacent positioning templates 1, which can effectively prevent concrete leakage and enhance the sealing of the splicing of adjacent positioning templates 1. The connecting screw 21 passes through the elongated hole 32 through the front side plate 3 and is threaded to the connecting nut 22. The connecting nut 22 tightens and presses the front side plate 3 and the rear side plate 2 tightly. The outer diameter of the rear end of the rotating shaft 33 is adapted to the inner diameter of the screw hole 23. The rotating shaft 33 is threaded to the rear side plate 2 through the screw hole 23. When the mold is opened, the rotating shaft 33 rotates in the opposite direction in the screw hole 23, and the spiral force replaces the manual pushing of the positioning template 1 to open the mold. There are two rotating shafts 33. The front end of one rotating shaft 33 is connected to the crank handle 37. The two rotating shafts 33 are connected by a transmission gear 36. A rotating connection is formed. By rotating the crank 37, the crank 37 drives one rotating shaft 33 and the transmission gear 36 to rotate. The transmission gear 36 drives another transmission gear 36 and the rotating shaft 33 to rotate, so that both rotating shafts 33 rotate and unscrew within the screw holes 23. At the same time, the rotating shafts 33 push the front side plate 3 to move forward, so that the front side plate 3 separates from the rear side plate 2 on the adjacent positioning template 1. Simultaneously, the front side plate 3 drives the positioning template 1 to separate from the outer concrete wall. The spiral force is used to replace manual pushing of the positioning template 1 to open the mold. The positioning template 1 is pushed by the rear side plate 2 to separate the adjacent positioning template 1 on the other side from the front side, realizing the linkage opening of several positioning templates 1. In order to adapt to the two transmission gears 36 driving the two rotating shafts 33 to rotate in opposite directions, the external threads 35 on the two rotating shafts 33 are in opposite directions, and the corresponding two screw holes 23 are also in opposite directions.

[0024] Furthermore, the fixing rod 5 has slots 51 on both sides of its side walls. The fixing rod 5 is a curved round rod. The curvature of the fixing rod 5 is consistent with that of the positioning template 1. The bottom of the fixing rod 5 is welded to the top of the positioning template 1 via the fixing bracket 4. After the positioning template 1 is assembled, several fixing rods 5 are connected in pairs to form a ring.

[0025] Furthermore, the support mechanism 7 includes two support rods 71, connected by a crossbeam 72. The support rods 71 ​​are welded and fixed to the crossbeam 72. A pin 73 is inserted through the top of each support rod 71, and a support foot 75 is fitted onto the outer side of the bottom end of each support rod 71. A set screw 76 is inserted through the outer wall of the support foot 75. A set screw hole 74 is formed on the outer wall of the bottom end of the support rod 71 at a position corresponding to the set screw 76. The outer diameter of the set screw 76 matches the inner diameter of the set screw hole 74. The support rod 71 is connected to the crossbeam 72 to form a ladder shape. The support mechanism 7 is used as a ladder while supporting the positioning template 1, so that the positioning template 1 can independently play the role of support and ladder, avoiding the trouble of installing columns and ladders separately. The top of the support rod 71 is rotatably connected to the inner wall of the groove 6 via the pin shaft 73. The support mechanism 7 can rotate relative to the positioning template 1 via the pin shaft 73, so as to complete the inclined support of the support rod 71 for the positioning template 1. At the same time, the support mechanism 7 can be stored, which is convenient for the overall transportation of the positioning template 1.

[0026] Furthermore, the support leg 75 is a hollow rectangular plate. The width of the inner wall of the support leg 75 is adapted to the width of the bottom end of the support rod 71. The support leg 75 is slidably connected to the support rod 71. By pulling the support leg 75 downward, it extends at the bottom of the support rod 71, thus extending the support rod 71 and making the bottom of the support leg 75 contact the ground of the foundation pit. The support rod 71 is tilted relative to the positioning template 1 to achieve the function of supporting and reinforcing the positioning template 1. The set screw 76 passes through the side wall of the support leg 75 and is threaded to the set screw hole 74. After the set screw 76 passes through the side wall of the support leg 75 and is threaded to the set screw hole 74, the support leg 75 is positioned.

[0027] Furthermore, the collar 8 includes a first side ring 81 and a second side ring 82. A groove 811 is formed on the outer wall of the first side ring 81, and through grooves 812 are formed on the upper sides of both sides of the groove 811, communicating with the groove 811. A smoothing mechanism 9 is connected inside the groove 811. A handle 821 is welded to the top of the second side ring 82, providing a point of force for manually pushing the collar 8. A hinge screw 83 is threaded through the first side ring 81 and the second side ring 82, with a hinge nut 84 fitted at one end. By rotating the hinge nut 84, the first side ring 81 and the second side ring 82 are pressed together and tightened, thus connecting the inner walls of the first side ring 81 and the second side ring 82. The first side ring 81 and the second side ring 82 are both equipped with rollers 85 on their inner walls. Both the first side ring 81 and the second side ring 82 are semi-circular rings. The first side ring 81 and the second side ring 82 are rotatably connected by a hinge screw 83. The hinge screw 83 enables the first side ring 81 and the second side ring 82 to be hinged, which facilitates the first side ring 81 and the second side ring 82 to be fitted onto the fixed rod 5. The inner diameter of the first side ring 81 and the second side ring 82 is adapted to the outer diameter of the fixed rod 5. The first side ring 81 and the second side ring 82 are fitted onto the outside of the fixed rod 5 and are slidably connected to the outer wall of the fixed rod 5. The smoothing mechanism 9 can be moved by moving the collar 8 on the fixed rod 5.

[0028] Furthermore, the height of the roller 85 is matched with the height of the slot 51. The roller 85 is inserted into the slot 51, and the roller 85 rolls against the inner wall of the slot 51. When the collar 8 is fitted onto the fixed rod 5, the roller 85 is engaged in the slots 51 on both sides of the fixed rod 5. The rolling of the roller 85 in the slots 51 reduces the friction between the inner wall of the collar 8 and the fixed rod 5, making the movement of the collar 8 smoother. In actual use, since there is a contact gap between adjacent fixed rods 5, the collar 8 should move slowly when passing through the gap.

[0029] Furthermore, the smoothing mechanism 9 includes a scraper 91, with a base plate 92 connected to the bottom of the scraper 91. The bottom of the base plate 92 contacts the upper surface of the concrete. A handle 821 pushes a collar 8 to move on a fixed rod 5, causing the collar 8 to rotate the base plate 92 around the fixed rod 5 to smooth the outer perimeter of the concrete surface. This changes the traditional method of relying entirely on manual smoothing of the wind turbine foundation surface, accelerating the smoothing speed and reducing the labor burden. The base plate 92 has a right-angled trapezoidal side, with a thicker side near the slider 93 to accommodate the height difference between the smoothing mechanism 9 and the concrete surface after the collar 8 is connected to the fixed rod 5. A slider 93 is connected to the end of the scraper 91 near the first side ring 81. Both the groove 811 and the slider 93 have an L-shaped cross-section, with the slider 93 locked inside the groove 811. Positioning screws 94 are connected to the outer walls of both ends of the slider 93. A positioning nut 95 is fitted on the 94. The slider 93 and the scraper 91 are integrally connected. The slider 93 is locked inside the slide groove 811 to form a sliding connection. By moving the slider 93 to slide in the slide groove 811, the slider 93 drives the scraper 91 and the base plate 92 to rotate around the center of the fixed rod 5, so that the bottom surface of the base plate 92 just contacts the concrete surface, realizing the tilt angle adjustment function of the smoothing mechanism 9. On the one hand, it avoids the situation where the base plate 92 does not fully contact the concrete or contacts the concrete too deeply. On the other hand, it makes the smoothing mechanism 9 applicable to smoothing the concrete surface of wind turbine foundations with different inclinations. The positioning screw 94 passes through the through groove 812 through the side wall of the slide groove 811 and is threadedly connected to the positioning nut 95. When the slider 93 moves in the slide groove 811, the slider 93 drives the positioning screw 94 to slide in the through groove 812. The positioning nut 95 can be screwed into the positioning screw 94 to squeeze and position the slider 93.

[0030] The usage method of this embodiment is as follows: When the user actually uses the positioning template 1 for positioning and pouring the lower layer of the wind turbine foundation, firstly, the front side plate 3 of the positioning template 1 overlaps with the rear side plate 2 of the adjacent positioning template 1. At this time, the front side plate 3 is inserted into the front side of the rear side plate 2. The connecting screw 21 passes through the elongated hole 32 through the front side plate 3, and the rear end of the rotating shaft 33 is inserted into the screw hole 23. The connecting nut 22 is put on the connecting screw 21 and screwed in, so that the connecting nut 22 tightens and presses the front side plate 3 and the rear side plate 2 tightly together. At the same time, the crank handle 37 is rotated. The crank handle 37 drives one rotating shaft 33 and the transmission gear 36 to rotate. The transmission gear 36 drives another transmission gear 36 and the rotating shaft 33 to rotate, so that the two rotating shafts 33 are threadedly connected to the screw hole 23 through the external thread 35. Several positioning... The positioning template 1 is spliced ​​in pairs to form the lower ring. At this time, the fixing rods 5 at the top of the positioning template 1 are connected in pairs. Then, a steel mesh is built. After the construction is completed, concrete is poured into the gaps between the steel mesh. At the same time, the support mechanism 7 is pulled outward. The support mechanism 7 rotates relative to the positioning template 1 through the pin shaft 73 and pulls the support leg 75 to extend at the bottom of the support rod 71, so that the bottom of the support leg 75 contacts the ground of the foundation pit. The top screw 76 passes through the side wall of the support leg 75 and is threaded to the top screw hole 74 to position the support leg 75. The support rod 71 is tilted relative to the positioning template 1 to support and reinforce the positioning template 1. The support rod 71 is connected to the crossbeam 72 to form a ladder shape to provide upper and lower support for the workers. After the concrete is poured, the surface of the wind turbine foundation near the center is manually smoothed. Then, the first side ring 81 and the second side ring 82 are fitted onto the fixed rod 5, and the roller 85 is locked into the slots 51 on both sides of the fixed rod 5. The hinge nut 84 is rotated to press the first side ring 81 and the second side ring 82 to connect and secure them. The smoothing mechanism 9 is placed on the surface of the fan foundation, and the slider 93 is moved to slide in the groove 811. The slider 93 drives the scraper 91 and the base plate 92 to rotate around the center of the fixed rod 5, so that the bottom surface of the base plate 92 just contacts the concrete surface. At the same time, the slider 93 drives the positioning screw 94 to slide in the through groove 812. The positioning nut 95 is fitted onto the positioning screw 94 and screwed in to press and position the slider 93, so that the tilt angle of the scraper 91 is kept fixed. Then, the handle 821 pushes the collar 8 to move on the fixed rod 5, and the roller 85 is locked into the slot. The rolling motion within the groove 51 causes the collar 8 to move, driving the smoothing mechanism 9. The base plate 92 rotates once along the fixed rod 5 to smooth the outer perimeter of the concrete surface, reducing the workload of manual labor. After the concrete has cured, the connecting nut 22 is rotated in the opposite direction to disassemble it. Then, the crank 37 is rotated in the opposite direction, causing both shafts 33 to rotate and unscrew within the screw holes 23. Simultaneously, the shafts 33 push the front side plate 3 forward, separating it from the rear side plate 2 on the adjacent positioning template 1. The front side plate 3 then drives the positioning template 1 to separate from the outer wall of the concrete. The spiral force replaces manual pushing of the positioning template 1 to open the mold. After the positioning template 1 is opened, the rear side plate 2 pushes the adjacent positioning template 1 to separate towards the front, completing the linkage opening of several positioning templates 1.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An improved positioning system for wind turbine foundations, comprising positioning templates (1), wherein the positioning templates (1) are arc-shaped plates, and there are several positioning templates (1), adjacent positioning templates (1) being connected to form a ring, characterized in that: The positioning template (1) has a rear side plate (2) connected to one side wall. A connecting screw (21) is installed on the front side wall of the rear side plate (2). A connecting nut (22) is fitted on the connecting screw (21). A screw hole (23) is opened on the rear side plate (2). The positioning template (1) has a front side plate (3) connected to the other side wall. A sealing gasket (31) is connected to the rear side wall of the front side plate (3). An elongated hole (32) is opened through the front side plate (3) and the sealing gasket (31) at the position corresponding to the connecting screw (21). A rotating shaft (33) is installed through the front side plate (3) of one of the positioning templates (1) at the position corresponding to the screw hole (23). The front side plate (3) and the rotating shaft are connected through the rotating shaft. A bearing (34) is installed between the shafts (33). The outer side wall of the rear end of the shaft (33) is provided with an external thread (35). The front end of the shaft (33) is connected to a transmission gear (36). The top of the positioning template (1) is connected to a fixing frame (4). The top of the fixing frame (4) is connected to a fixing rod (5). The two side walls of the fixing rod (5) are provided with slots (51). The fixing rod (5) is a curved round rod. The bottom of the fixing rod (5) is welded to the top of the positioning template (1) via the fixing frame (4). The front side of the positioning template (1) is provided with a groove (6). The groove (6) is provided with a support mechanism (7). The fixing rod (5) is fitted with a collar (8). The collar (8) includes a first side ring (81) and a second side ring (82). The outer wall of the first side ring (81) is provided with a groove (811). The upper sides of the groove (811) are provided with through grooves (812). A smoothing mechanism (9) is connected inside the groove (811). A handle (821) is welded to the top of the second side ring (82). A hinge screw (83) is provided between the first side ring (81) and the second side ring (82). A hinge nut (84) is sleeved on one end of the hinge screw (83). Rollers (85) are installed on the inner walls of the first side ring (81) and the second side ring (82). The first side ring (81) and the second side ring (82) are both semi-circular rings. The first side ring (81) and the second side ring (82) are rotatably connected by a hinge screw (83). The inner diameter of the first side ring (81) and the second side ring (82) is adapted to the outer diameter of the fixed rod (5). The first side ring (81) and the second side ring (82) are fitted on the outside of the fixed rod (5) and are slidably connected to the outer wall of the fixed rod (5). The smoothing mechanism (9) includes a scraper (91), the bottom of which is connected to a base plate (92). A slider (93) is connected to one end of the scraper (91) near the first side ring (81). Positioning screws (94) are connected to the outer walls of both ends of the slider (93). A positioning nut (95) is fitted on the positioning screw (94). The slider (93) is integrally connected to the scraper (91). The slider (93) is locked inside the slide groove (811) to form a sliding connection. The positioning screw (94) passes through the slide groove (812) through the side wall of the slide groove (811) and is threadedly connected to the positioning nut (95).

2. The improved positioning system for wind turbine foundations according to claim 1, characterized in that: The front side plate (3) and the rear side plate (2) are integrally connected to the positioning template (1). The front side plate (3) and the rear side plate (2) on the adjacent positioning template (1) are overlapped. The connecting screw (21) passes through the elongated hole (32) through the front side plate (3) and is threaded to the connecting nut (22). The outer diameter of the rear end of the rotating shaft (33) is adapted to the inner diameter of the screw hole (23). The rotating shaft (33) is threaded to the rear side plate (2) through the screw hole (23). There are two rotating shafts (33). The front end of one rotating shaft (33) is connected to the handle (37). The two rotating shafts (33) are rotatably connected through the transmission gear (36).

3. The improved positioning system for wind turbine foundations according to claim 1, characterized in that: The support mechanism (7) includes two support rods (71), and a crossbeam (72) is connected between the two support rods (71). A pin (73) is provided through the top of the support rod (71). A foot (75) is sleeved on the outer side of the bottom end of the support rod (71). A set screw (76) is provided through the outer wall of the foot (75). A set screw hole (74) is opened at the position corresponding to the set screw (76) on the outer wall of the bottom end of the support rod (71). The support rod (71) is connected to the crossbeam (72) to form a ladder shape. The top of the support rod (71) is rotatably connected to the inner wall of the groove (6) via the pin (73).

4. The improved positioning system for wind turbine foundations according to claim 3, characterized in that: The support leg (75) is a rectangular plate with a hollow interior. The width of the inner wall of the support leg (75) is adapted to the width of the bottom end of the support rod (71). The support leg (75) is slidably connected to the support rod (71). The set screw (76) passes through the side wall of the support leg (75) and is threadedly connected to the set screw hole (74).

5. The improved positioning system for wind turbine foundations according to claim 1, characterized in that: The height of the roller (85) is adapted to the height of the slot (51), the roller (85) is inserted into the slot (51), and the roller (85) is rolled in connection with the inner wall of the slot (51).

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