Single-point turnover device for fan tower

Abstract

The utility model discloses a single-point turnover device for a fan tower. The single-point turnover device comprises a fixed bottom plate, a turnover unit arranged on the fixed bottom plate and a connecting unit arranged on the turnover unit, the turning-over units are used in pairs, and each turning-over unit comprises a turning-over base arranged on the fixed bottom plate and a turning-over vertical beam arranged on the turning-over base; the connecting unit comprises an upper connecting assembly and a lower connecting assembly, the upper connecting assembly comprises an upper connecting bolt and an upper connecting plate, and the lower connecting assembly comprises a lower connecting bolt and a lower connecting plate. After the length of the turnover unit and the direction of the connecting unit are adjusted, the bottom of the tower to be turned over is fixed to the connecting unit, the top of the tower to be turned over is lifted through a crane, the tower to be turned over rotates around the turnover unit, turnover operation of the tower to be turned over is completed, the installation process of the fan tower is simplified, and the installation efficiency of the fan tower is improved. Resources needed by turning over are saved, the installation efficiency of the fan tower is improved, and the operation safety is improved.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of wind power generation, and more specifically, relate to a single-point turning device for a wind turbine tower. Background Art

[0002] Wind power generation, a key technology for renewable energy, has been widely promoted and applied in China. Due to the strong, unobstructed, and long-lasting offshore winds, wind turbines have been deployed offshore. During the installation of offshore wind turbines, after the bottom section of the tower is hoisted, the remaining sections must be turned over before being hoisted and installed. This turning operation is performed by the main and auxiliary cranes on the wind turbine operating platform. As wind power technology continues to improve, the weight of wind turbine towers has increased. The auxiliary crane parameters of some existing wind turbine operating platforms are unable to meet the turning requirements for large-tonnage wind turbine towers.

[0003] The double-hook lifting method is currently the most commonly used method for turning over wind turbine towers on construction sites. This method involves the coordination of the main and auxiliary cranes on the wind turbine operation vessel. The main crane is mounted on the upper flange lifting point of the wind turbine tower, while the auxiliary crane is mounted on the lower flange lifting point. After the crane is installed, they are lifted simultaneously. Once the wind turbine tower is a certain distance away from the deck, the main crane is lifted, driving the wind turbine tower to complete the turning motion. This method can complete the turning of the wind turbine tower and meet the requirements of on-site operations.

[0004] However, this method of turning over the wind turbine tower requires a high lifting capacity for the auxiliary crane during operation. Furthermore, the mid-air turning requires high coordination between the main and auxiliary cranes, posing significant safety risks. Furthermore, this method is inefficient and can easily cause inconvenience in wind turbine construction due to unpredictable weather conditions at sea. Therefore, a single-point turning device for the wind turbine tower is needed, which can perform a fixed-point turning operation on the shipboard, effectively completing the turning task with only a single main crane. Utility Model Content

[0005] In response to the above defects or improvement needs of the prior art, the utility model provides a single-point turning device for a wind turbine tower. According to the diameter of the tower to be turned, the length of the turning unit and the direction of the connecting unit are adjusted, and the bottom of the tower to be turned is fixed on the connecting unit. The top of the tower is lifted by a crane and rotated around the turning unit to complete the turning operation of the tower to be turned. After the turning is completed, the tower is hoisted again, which simplifies the installation process of the wind turbine tower, saves the resources required for turning, improves the efficiency of the wind turbine tower installation, and improves the safety of the operation.

[0006] In order to achieve the above-mentioned object, an embodiment of the present utility model provides a single-point turning device for a wind turbine tower, comprising a fixed base plate, a turning unit provided on the fixed base plate, and a connecting unit provided on the turning unit;

[0007] The turning units are used in pairs and include a turning base provided on the fixed base plate and a turning vertical beam provided on the turning base;

[0008] The connecting unit includes an upper connecting assembly and a lower connecting assembly. The upper connecting assembly includes an upper connecting bolt and an upper connecting plate. The lower connecting assembly includes a lower connecting bolt and a lower connecting plate.

[0009] Furthermore, the fixed bottom plate is a square plate, and a pair of slide grooves are provided on its top surface along the length direction, and the slide grooves are T-shaped slide grooves with a small opening and a large interior;

[0010] A clamping groove is respectively provided on both sides of the fixed base plate in the same direction as the sliding groove, and both the sliding groove and the clamping groove pass through the two ends of the fixed base plate.

[0011] Furthermore, the bottom of the turning base is a square plate, and a pair of parallel slide rails are provided at both ends of the bottom. The slide rails are T-shaped slide rails with the same cross-section as the slide grooves, and the distance between the two slide rails is the same as the distance between the two slide grooves. The slide grooves cooperate with the slide rails.

[0012] The turning base is provided with two V-shaped support plates, which are fixed upright on the turning base facing each other, and the V-shaped support plates are triangular plates with a V-shaped groove at the top corner facing downward, and the bottom of the V-shaped groove is rounded;

[0013] A reinforcing rib is further provided between the V-shaped support plate and the fixed bottom plate to enhance the supporting strength of the turning base;

[0014] The two V-shaped support plates of the turning base are arranged at intervals.

[0015] Furthermore, the turning vertical beam is a telescopic rod structure, with a support hole provided on the bottom side, and a support pin provided in the support hole;

[0016] The support pin is larger at both ends and smaller in the middle, and is located on the outside of the V-shaped support plate at both ends;

[0017] The support pin transmits the downward force of the turning vertical beam, supports it on the turning base, and enables it to rotate around the support pin.

[0018] Furthermore, connecting holes are provided at both ends of one side surface of the turning vertical beam, and internal threads are provided in the connecting holes. The side surface provided with the connecting holes and the side surface provided with the supporting holes are adjacent sides.

[0019] Furthermore, the upper connecting plate is connected to the top connecting hole of the turning vertical beam through an upper connecting bolt, and the upper connecting plate rotates around the upper connecting bolt at the top of the turning vertical beam.

[0020] Furthermore, the upper connecting plate is a strip-shaped square plate with a countersunk through hole in the middle and a plurality of through holes on the surface as fixing holes, and the plurality of fixing holes are equidistantly arranged along an arc of a certain radius to form a fixing hole array;

[0021] When the upper connecting bolt is tightened, there is still a gap between the bottom of the nut and the countersunk through hole of the upper connecting plate, so that the upper connecting plate can rotate freely. The top of the nut of the connecting bolt is flush with or lower than the countersunk hole in the countersunk hole.

[0022] Furthermore, the shape and size of the lower connecting bolt and the lower connecting plate are respectively the same as those of the upper connecting bolt and the upper connecting plate;

[0023] The array of fixing holes on the lower connecting plate and the array of fixing holes on the upper connecting plate are arranged opposite to each other.

[0024] Furthermore, it also includes a movable buckle, the movable buckle body is a strip plate, its length is the same as the width of the fixed base plate, and hook plates bent inward are provided at both ends, and the hook plates are slidably connected to the slots on both sides of the fixed base plate.

[0025] Furthermore, the strip plate of the movable buckle passes through the gap between the two V-shaped support plates of the turning base and presses it onto the fixed base plate;

[0026] The movable buckle slides on the fixed bottom plate along with the turning base.

[0027] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0028] 1. The utility model provides a single-point turning device for a wind turbine tower. According to the diameter of the tower to be turned, the length of the turning unit and the direction of the connecting unit are adjusted, and the bottom of the tower to be turned is fixed on the connecting unit. The top of the tower is lifted by a crane and rotated around the turning unit to complete the turning operation of the tower to be turned. After the turning is completed, the tower is hoisted again, which simplifies the installation process of the wind turbine tower, saves the resources required for turning, improves the efficiency of wind turbine tower installation, and improves the safety of operation.

[0029] 2. The utility model provides a single-point turning device for a wind turbine tower, in which the connection between the turning base and the turning vertical beam is set to an open design with a V-shaped groove, which ensures that the turning vertical beam can rotate normally while realizing rapid installation and disassembly between the two.

[0030] 3. The utility model provides a single-point turning device for a wind turbine tower, which buckles the turning base to a fixed base plate by moving the buckle, further providing it with a clamping force to prevent the turning base from being displaced due to excessive force during the turning process, thereby affecting the operation and improving the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of a single-point turning device for a wind turbine tower according to an embodiment of the present utility model;

[0032] Figure 2 This is a schematic structural diagram of a turning unit of a single-point turning device for a wind turbine tower according to an embodiment of the present utility model;

[0033] Figure 3 This is a schematic diagram of the connection between the fixed base plate and the turning base of a single-point turning device for a wind turbine tower according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the connection between the connecting unit and the turning vertical beam of a single-point turning device of a wind turbine tower according to an embodiment of the present utility model.

[0035] In all the drawings, the same figure marks represent the same technical features, specifically: 1-fixed base plate, 2-turning base, 3-turning vertical beam, 4-support pin, 5-lower connecting bolt, 6-lower connecting plate, 7-upper connecting bolt, 8-upper connecting plate, 9-movable buckle. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1As shown, this embodiment provides a single-point turning device for a wind turbine tower, comprising a fixed base plate 1, a turning unit provided on the fixed base plate 1, and a connecting unit provided on the turning unit. The connecting unit is directionally adjustable, and the turning unit is lengthwise adjustable. According to the diameter of the tower to be turned, by adjusting the length of the turning unit and the direction of the connecting unit, the bottom of the tower to be turned is fixed to the connecting unit, and the top of the tower is hoisted by a crane so that it rotates around the turning unit to complete the turning operation of the tower to be turned. After the turning operation is completed, the tower can be hoisted again, thereby simplifying the installation process of the wind turbine tower, saving resources required for turning, improving the efficiency of wind turbine tower installation, and enhancing the safety of the operation.

[0038] The fixed base plate 1 is a square plate, which is fixed to the ship deck by welding. A pair of slide grooves are provided on the top surface of the fixed base plate 1 along the length direction. The slide groove is a T-shaped slide groove with a small opening and a large inside. A card groove is provided on both sides of the fixed base plate 1 in the same direction as the slide groove, and the slide groove and the card groove both pass through the two ends of the fixed base plate 1.

[0039] like Figure 2 、 3 As shown, the turning unit is used in pairs, including a turning base 2 provided on the fixed base plate 1 and a turning vertical beam 3 provided on the turning base 2. The bottom of the turning base 2 is a square plate, and a pair of parallel slide rails are provided at both ends of the bottom. The slide rails are T-shaped slide rails with the same cross-section as the slide groove, and the distance between the two slide rails is the same as the distance between the two slide grooves, and the slide grooves cooperate with the slide rails. Two V-shaped support plates are provided on the turning base 2, and the two V-shaped support plates are fixed upright on the turning base 2 in opposite directions. The V-shaped support plates are triangular plates with a V-shaped groove on the top corner facing downward, and the bottom of the V-shaped groove is rounded. Reinforcing ribs are also provided between the V-shaped support plate and the fixed base plate 1 to enhance the supporting strength of the turning base 2. The two V-shaped support plates of the turning base 2 are spaced apart.

[0040] The turning beam 3 is a telescopic rod structure with a support hole provided on the bottom side. A support pin 4 is provided in the support hole. The support pin 4 is larger at both ends and smaller in the middle. The two ends of the support pin 4 are located outside the V-shaped support plate, that is, the support pin 4 transmits the downward force of the turning beam 3, supports it on the turning base 2, and enables it to rotate around the support pin 4. The V-shaped groove is flanked by inner and outer reinforcing plates. The inner and outer reinforcing plates are major arc fan-shaped plates with the same V-shaped grooves in the same positions as the V-shaped support plate. They are welded to the two sides of the V-shaped support plate. The inner and outer reinforcing plates increase the force-bearing area at the contact point between the support pin 4 and the V-shaped support plate, thereby enhancing the strength of the turning base 2 and providing better stability for the turning beam 3 to rotate on the turning base 2. The connection between the turning base 2 and the turning beam 3 is designed as an open V-shaped groove, which ensures that the turning beam 3 can rotate normally while enabling rapid installation and removal between the two.

[0041] Connecting holes are formed at both ends of one side of the turning vertical beam 3 , and internal threads are provided in the connecting holes. The side with the connecting holes and the side with the supporting holes are adjacent sides.

[0042] The connecting unit includes an upper connecting component and a lower connecting component. The upper connecting component includes an upper connecting bolt 7 and an upper connecting plate 8. The upper connecting plate 8 is connected to the top connecting hole of the turning vertical beam 3 through the upper connecting bolt 7. The upper connecting plate 8 rotates around the upper connecting bolt 7 at the top of the turning vertical beam 3. The upper connecting plate 8 is a strip-shaped square plate with a countersunk through hole in the middle and a plurality of through holes on the surface as fixing holes. The plurality of fixing holes are equidistantly arranged along an arc of a certain radius to form an array of fixing holes. When the upper connecting bolt 7 is tightened, there is still a gap between the bottom of its nut and the countersunk through hole of the upper connecting plate 8, so that the upper connecting plate 8 can rotate freely. The top of the nut of the connecting bolt 7 is flush with or lower than the countersunk hole mouth in the countersunk hole.

[0043] like Figure 4 As shown, the lower connecting assembly includes a lower connecting bolt 5 and a lower connecting plate 6. The shapes and sizes of the lower connecting bolt 5 and the lower connecting plate 6 are respectively the same as the upper connecting bolt 7 and the upper connecting plate 8. The difference is that the fixing hole array on the lower connecting plate 6 and the fixing hole array on the upper connecting plate 8 are arranged opposite to each other.

[0044] The turning device of the embodiment of the present utility model also includes a movable buckle 9, the main body of the movable buckle 9 is a strip plate, the length of which is the same as the width of the fixed base plate 1, and hook plates bent inward are provided at both ends. The hook plates are slidably connected to the slots on both sides of the fixed base plate 1. Through the sliding connection, the sliding of the movable buckle 9 on the fixed base plate 1 is achieved. The strip plate of the movable buckle 9 passes through the gap between the two V-shaped support plates of the turning base 2 and presses it on the fixed base plate 1. When in use, the movable buckle 9 slides on the fixed base plate 1 with the turning base 2. The movable buckle 9 buckles the turning base 2 on the fixed base plate 1, further providing it with a clamping force to prevent the turning base 2 from being displaced due to excessive force during the turning process, thereby affecting the operation and improving the safety of the operation.

[0045] Preferably, when performing a single-point turnover of the tower, the bottom of the tower to be turned is fixed to the lower connecting plate 6 and the upper connecting plate 8 with bolts, and the tower to be turned is lifted by a crane. During the lifting process, the tower to be turned rotates on the turning base 2 along with the turning vertical beam 3, gradually turning from horizontal to vertical, thereby realizing the turning of the tower. The bolts at the connection are then removed to separate the device from the tower.

[0046] Preferably, when facing towers of different diameters, the turning beams 3 are extended and retracted to change their length, the turning base 2 slides on the fixed base plate 1 to change the distance between the two turning beams 3, and the lower connecting plate 6 and the upper connecting plate 8 are rotated to align with some holes on the tower bottom flange. This allows the bottoms of towers of different diameters to be fixed, improving the versatility of the device.

[0047] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0049] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A single-point turning device for a wind turbine tower, characterized in that: It comprises a fixed base plate (1), a turning unit provided on the fixed base plate (1), and a connecting unit provided on the turning unit; The turning units are used in pairs, and include a turning base (2) provided on the fixed base plate (1) and a turning vertical beam (3) provided on the turning base (2); The connection unit comprises an upper connection assembly and a lower connection assembly, the upper connection assembly comprises an upper connection bolt (7) and an upper connection plate (8), and the lower connection assembly comprises a lower connection bolt (5) and a lower connection plate (6).

2. A wind turbine tower single-point turning device according to claim 1, characterized in that: The fixed bottom plate (1) is a square plate, and a pair of slide grooves are provided on its top surface along the length direction, and the slide grooves are T-shaped slide grooves with a small opening and a large interior; A clamping groove is provided on each of the two sides of the fixed base plate (1) in the same direction as the sliding groove, and both the sliding groove and the clamping groove pass through the two ends of the fixed base plate (1).

3. A wind turbine tower single-point turning device according to claim 2, characterized in that: The bottom of the turning base (2) is a square plate, and a pair of parallel slide rails are provided at both ends of the bottom. The slide rails are T-shaped slide rails with the same cross-section as the slide grooves, and the distance between the two slide rails is the same as the distance between the two slide grooves. The slide grooves are matched with the slide rails. The turning base (2) is provided with two V-shaped support plates, which are fixed upright on the turning base (2) facing each other, and the V-shaped support plates are triangular plates with V-shaped grooves on their top corners pointing downwards, and the bottoms of the V-shaped grooves are rounded. Reinforcing ribs are also provided between the V-shaped support plate and the fixed base plate (1) to enhance the supporting strength of the turning base (2); The two V-shaped support plates of the turning base (2) are arranged at intervals.

4. A wind turbine tower single-point turning device according to claim 3, characterized in that: The turning vertical beam (3) is a telescopic rod structure, with a support hole provided on the bottom side, and a support pin (4) provided in the support hole; The support pin (4) is larger at both ends and smaller in the middle, and is located on the outside of the V-shaped support plate at both ends; The support pin (4) transmits the downward force of the turning vertical beam (3), supports it on the turning base (2), and enables it to rotate around the support pin (4).

5. A wind turbine tower single-point turning device according to claim 4, characterized in that: Connecting holes are provided at both ends of one side surface of the turning vertical beam (3), wherein internal threads are provided in the connecting holes, and the side surface provided with the connecting holes and the side surface provided with the supporting holes are adjacent sides.

6. The single-point turning device for a wind turbine tower according to claim 4, characterized in that: The upper connecting plate (8) is connected to the top connecting hole of the turning vertical beam (3) through the upper connecting bolt (7), and the upper connecting plate (8) rotates around the upper connecting bolt (7) at the top of the turning vertical beam (3).

7. A wind turbine tower single-point turning device according to claim 6, characterized in that: The upper connecting plate (8) is a strip-shaped square plate with a countersunk through hole in the middle and a plurality of through holes on the surface as fixing holes, and the plurality of fixing holes are equidistantly arranged along an arc of a certain radius to form a fixing hole array; When the upper connecting bolt (7) is tightened, there is a gap between the bottom of its nut and the countersunk through hole of the upper connecting plate (8), so that the upper connecting plate (8) can rotate freely, and the top of the nut of the connecting bolt (7) is flush with the countersunk hole or lower than the countersunk hole mouth in the countersunk hole.

8. The single-point turning device for a wind turbine tower according to claim 7, characterized in that: The shape and size of the lower connecting bolt (5) and the lower connecting plate (6) are respectively the same as those of the upper connecting bolt (7) and the upper connecting plate (8); The array of fixing holes on the lower connecting plate (6) and the array of fixing holes on the upper connecting plate (8) are arranged facing each other.

9. A single-point turning device for a wind turbine tower according to any one of claims 3 to 8, characterized in that: It also includes a movable buckle (9), the main body of the movable buckle (9) is a strip plate, the length of which is the same as the width of the fixed base plate (1), and the two ends are provided with hook plates bent inwards downward, and the hook plates are slidably connected to the card slots on both sides of the fixed base plate (1).

10. The single-point turning device for a wind turbine tower according to claim 9, characterized in that: The strip plate of the movable buckle (9) passes through the gap between the two V-shaped support plates of the turning base (2) and is pressed onto the fixed base plate (1); The movable buckle (9) slides on the fixed base plate (1) along with the turning base (2).

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