Wind power tower drum with variable cross section

Abstract

The invention discloses a variable cross-section wind power tower drum, and relates to the field of wind power tower drums, the variable cross-section wind power tower drum comprises tower drum bodies, a base and a power generation mechanism, the tower drum bodies are mounted on the base, the diameters of the tower drum bodies are gradually reduced from bottom to top, and the tower drum bodies are spliced to form a tower body. According to the wind power tower drum with the variable cross section, the supporting and positioning mechanism is adopted, when the two tower drum bodies are assembled, the supporting and positioning functions of the tower drum bodies can be achieved by adjusting an arc-shaped positioning plate, and therefore it is guaranteed that the central axes of the two tower drum bodies coincide; when the threaded holes in the flanges in the two tower drum bodies are staggered, rotating acting force is applied to the hoisted tower drum bodies, so that the tower drum bodies deflect by a small angle until the positioning rods and the positioning clamping grooves are clamped and positioned, the alignment positioning effect of the threaded holes is achieved, tedious manual adjustment is not needed, safety can be guaranteed, and the hoisting efficiency is improved. And the installation efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine towers, and specifically to a variable cross-section wind turbine tower. Background Art

[0002] With the development of society, wind power generation, as a renewable energy source at the present stage, is widely used. A wind power generation device mainly consists of a tower body spliced by tower tubes and a power generation mechanism. As the support structure of the entire wind power generation device, the tower tube provides a basic guarantee for the stable operation of the wind power generation device;

[0003] The existing tower tubes for wind power generation devices are mainly variable cross-section cylindrical structures with a gradually decreasing diameter from bottom to top. When splicing and assembling the tower body with multiple tower tubes, since the tower tube assembly requires high-altitude hoisting by a crane, it is difficult to control the alignment of the assembly positions of the two tower tubes. It is necessary to make a cumbersome adjustment to align the empty positions of the two spliced tower tubes, which leads to a large amount of time consumed in the assembly of the tower tube and greatly affects the assembly efficiency of the tower tube splicing. Summary of the Invention

[0004] The purpose of the present invention is to provide a variable cross-section wind turbine tower to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A variable cross-section wind turbine tower, including a tower tube body, a base, and a power generation mechanism. The tower tube body is installed on the base, and the diameter of the tower tube body gradually decreases from bottom to top. The tower tube body is assembled to form a tower body. A tower tube body is installed at the upper end of the tower tube body. A workbench is fixed inside the tower tube body. An earthquake-resistant mechanism is installed below the workbench. A driving mechanism is installed on the workbench. The driving mechanism is connected to a positioning mechanism. The positioning mechanism includes a support frame. The support frame is slidably connected to the tower tube body, and the support frame is in a cross-shaped structure. A movable frame is slidably connected to the support frame. A bracket is fixed on the movable frame. The bracket is in contact with and slides on an arc-shaped positioning plate. Four groups of arc-shaped positioning plates are arranged at equal angles, and the arc-shaped positioning plates are in contact with the inner wall of the tower tube body to achieve positioning. An installation frame is arranged on the side of the movable frame. A positioning rod is connected to the installation frame by a bearing. The positioning rod is engaged with a positioning card slot to achieve a positioning function.

[0006] Preferably, inner flanges are fixed on both the upper and lower sides inside the tower tube body. Threaded holes are opened at equal angles on the inner flanges. Positioning card slots are also opened at equal angles on the inner flanges. At the same time, the positioning card slots and the threaded holes correspond to each other one by one. A staircase is fixedly installed inside the tower tube body. The inner flanges and the threaded holes cooperate with bolts and nuts, which can provide a basic guarantee for locking and fixing between two tower tube bodies.

[0007] Preferably, the seismic mechanism includes a fixed rod, the upper end of the fixed rod is fixed to the workbench, and an installation ring is fixed to the lower end of the fixed rod. The fixed rod is used to fixedly support the installation ring to ensure the stability of the installation ring.

[0008] Preferably, spring dampers are fixedly arranged at equal angles on the inner side of the installation ring, rolling balls are installed at the ends of the spring dampers, and the rolling balls are in contact with the gravity block. The spring dampers can buffer the movement of the gravity block, thereby realizing the seismic effect of the tower barrel body and ensuring the stability of the tower barrel body. With the rolling effect between the rolling balls and the gravity block, the acting force generated by the gravity block can be stably applied to the spring damper.

[0009] Preferably, the upper end of the gravity block is fixedly connected to one end of a steel cable, the other end of the steel cable is fixedly connected to the workbench, and the central axis of the gravity block coincides with the central axis of the workbench. When the tower barrel body sways due to the action of external wind, the gravity block swings to apply a force to the spring damper, so that the spring damper moves to generate a damping force, and then the vibrations generated by the tower barrel body and the gravity block gradually weaken, ensuring the stability of the tower barrel body.

[0010] Preferably, the driving mechanism includes a hydraulic oil tank, the hydraulic oil tank is fixed on the workbench, and the hydraulic oil tank is connected to a hydraulic rod through a conduit and an oil pump. At the same time, the hydraulic rod is fixedly connected to the workbench. The hydraulic rod is connected to the support frame by a bearing. The action of the hydraulic rod can provide a basic acting force for positioning two tower barrel bodies, so as to facilitate the precise alignment and installation of the two tower barrel bodies.

[0011] Preferably, a driving motor is fixed to the output end of the hydraulic rod, a fixing plate is fixed to the output end of the driving motor, one end of the fixing plate is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to a movable frame. The connecting rods and the movable frames are distributed in a one-to-one correspondence. By the up and down movement of the fixing plate and the transmission action of the connecting rod, a basic acting force can be provided for the movement of the movable frame. With the action of the driving motor, a force can be provided for the rotation of the tower barrel body.

[0012] Preferably, the arc-shaped positioning plates and the positioning rods are distributed in a one-to-one correspondence, and the surface of the contact surface between the arc-shaped positioning plates and the inner wall of the tower barrel body is a rough structure. The rough structure on the surface of the arc-shaped positioning plates can effectively ensure the friction force between the arc-shaped positioning plates and the tower barrel body, thereby providing a basic guarantee for realizing the fine adjustment of the rotation of the tower barrel body.

[0013] Preferably, a vertical rod is fixedly mounted on the arc-shaped positioning plate, and the vertical rod is slidably connected to the support. A first spring is also fixedly mounted between the vertical rod and the support. Through the sliding action between the vertical rod and the support, it can provide a basic guarantee for the movement of the arc-shaped positioning plate. Combining with the elastic action of the first spring, it can provide a basic guarantee for the automatic reset of the arc-shaped positioning plate.

[0014] Preferably, a sliding rod is fixedly mounted on the mounting frame, and the sliding rod is slidably connected to the movable frame. A second spring is also fixedly mounted between the sliding rod and the movable frame. When the mounting frame moves, combining with the sliding guiding action between the sliding rod and the movable frame, it can ensure the stability of the movement of the mounting frame. Combining with the elastic action of the second spring, it can provide a basic acting force for the reset of the mounting frame to ensure the normal engagement of the mounting frame and the positioning slot.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. For this variable-section wind turbine tower, by adopting the support positioning mechanism, when assembling two tower barrel bodies, the support and positioning of the tower barrel bodies can be realized by adjusting the arc-shaped positioning plate, so as to ensure that the central axes of the two tower barrel bodies coincide. Then, combining with the linked elastic engagement mechanism, when the threaded holes on the inner flanges of the two tower barrel bodies are misaligned, by applying a rotational force to the hoisted tower barrel body, the tower barrel body can be deflected by a small angle until the positioning rod engages with the positioning slot, thereby realizing the alignment and positioning of the threaded holes. There is no need for cumbersome manual adjustment, which can not only ensure safety but also effectively improve the installation efficiency.

[0017] 2. For this variable-section wind turbine tower, by adopting the contact-type damping seismic mechanism, when the tower barrel body shakes due to external factors, the gravity block can shake under the action of potential energy. Combining with the action of multiple groups of spring dampers, a damping force can be generated to quickly stabilize the tower barrel body and ensure the safety of the use of the tower barrel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the internal composition of the tower of the present invention;

[0019] Figure 2 is a three-dimensional structural schematic diagram of the composition of the tower of the present invention;

[0020] Figure 3 is a three-dimensional structural schematic diagram of the composition of the seismic mechanism of the present invention;

[0021] Figure 4 is a three-dimensional structural schematic diagram of the composition of the seismic mechanism, driving mechanism and positioning mechanism of the present invention;

[0022] Figure 5 is a three-dimensional structural schematic diagram of the composition of the driving mechanism and positioning mechanism of the present invention;

[0023] Figure 6 This is a three-dimensional structural schematic diagram of a partial component of the positioning mechanism of the present invention;

[0024] Figure 7 This is a structural schematic diagram of the wind power generation device of the present invention.

[0025] In the figure: 1, tower barrel body; 101, inner flange; 102, threaded hole; 103, positioning card slot; 104, staircase; 2, base; 3, power generation mechanism; 4, workbench; 5, seismic resistance mechanism; 501, fixing rod; 502, mounting ring; 503, spring damper; 504, ball; 505, steel cable; 506, gravity block; 6, driving mechanism; 601, hydraulic oil tank; 602, hydraulic rod; 603, driving motor; 604, fixing plate; 605, connecting rod; 7, positioning mechanism; 701, support frame; 702, movable frame; 703, bracket; 704, arc-shaped positioning plate; 705, vertical rod; 706, first spring; 707, mounting frame; 708, positioning rod; 709, sliding rod; 710, second spring. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-7 , the present invention provides a technical solution: a variable cross-section wind tower barrel, including a tower barrel body 1, a base 2 and a power generation mechanism 3. The tower barrel body 1 is installed on the base 2, and the diameter of the tower barrel body 1 gradually decreases from bottom to top. And the tower barrel body 1 is assembled to form a tower body. A tower barrel body 1 is installed at the upper end of the tower barrel body 1. A workbench 4 is fixed inside the tower barrel body 1. A seismic resistance mechanism 5 is installed below the workbench 4. A driving mechanism 6 is installed on the workbench 4. The driving mechanism 6 is connected to the positioning mechanism 7. The positioning mechanism 7 includes a support frame 701. The support frame 701 is slidably connected to the tower barrel body 1, and the support frame 701 is a cross-shaped structure. A movable frame 702 is slidably connected to the support frame 701. A bracket 703 is fixed on the movable frame 702. The bracket 703 is in contact with and slides on the arc-shaped positioning plate 704. And four groups of arc-shaped positioning plates 704 are arranged at equal angles. And the arc-shaped positioning plate 704 is in contact with the inner wall of the tower barrel body 1 to achieve positioning. An installation frame 707 is arranged on the side of the movable frame 702. A positioning rod 708 is connected to the installation frame 707 by a bearing. The positioning rod 708 is engaged with the positioning card slot 103 to achieve a positioning function.

[0028] On the inner side of the tower barrel body 1, inner flanges 101 are fixedly installed at both the upper and lower parts. Threaded holes 102 are equally angularly arranged on the inner flanges 101, and positioning card slots 103 are also equally angularly arranged on the inner flanges 101. At the same time, the positioning card slots 103 and the threaded holes 102 correspond to each other one by one. A staircase 104 is fixedly installed inside the tower barrel body 1; The driving mechanism 6 includes a hydraulic oil tank 601, and the hydraulic oil tank 601 is fixed on the workbench 4. The hydraulic oil tank 601 is connected to a hydraulic rod 602 through a conduit and an oil pump. At the same time, the hydraulic rod 602 is fixedly connected to the workbench 4, and the hydraulic rod 602 is connected to the support frame 701 through a bearing; A driving motor 603 is fixed at the output end of the hydraulic rod 602, and a fixing plate 604 is fixed at the output end of the driving motor 603. The fixing plate 604 is rotatably connected to one end of a connecting rod 605. At the same time, the other end of the connecting rod 605 is rotatably connected to a movable frame 702, and the connecting rod 605 and the movable frame 702 are distributed in a one-to-one correspondence; The arc-shaped positioning plates 704 and the positioning rods 708 are distributed in a one-to-one correspondence, and the surface of the contact surface between the arc-shaped positioning plates 704 and the inner wall of the tower barrel body 1 is a rough structure; A vertical rod 705 is vertically fixed on the arc-shaped positioning plate 704, and the vertical rod 705 is slidably connected to the support 703. At the same time, a first spring 706 is also fixed between the vertical rod 705 and the support 703; A sliding rod 709 is fixed on the mounting bracket 707, and the sliding rod 709 is slidably connected to the movable frame 702. At the same time, a second spring 710 is also fixed between the sliding rod 709 and the movable frame 702;

[0029] When assembling the variable-section wind tower barrel, such as Figures 1-7As shown, first install the lowermost tower barrel body 1 on the base 2, and then hoist the second tower barrel body 1 by a crane so that the second tower barrel body 1 is located above the lowermost tower barrel body 1. At this time, the driving mechanism 6 and the positioning mechanism 7 are located inside the second tower barrel body 1. Gradually lower the second tower barrel body 1 so that the distance between the second tower barrel body 1 and the lowermost tower barrel body 1 is 3 cm - 10 cm. At this time, control the hydraulic rod 602 to contract, thereby driving the driving motor 603 and the fixed plate 604 to move downward. With the transmission of the connecting rod 605, the movable frame 702 is forced to slide on the support frame 701, thereby driving the arc-shaped positioning plate 704 and the positioning rod 708 to move. When the positioning rod 708 moves to contact the inner wall of the lower inner flange 101 of the second tower barrel body 1 and generates a displacement of 1 cm - 3 cm, with the sliding guiding effect between the sliding rod 709 and the movable frame 702, the stability of the movement of the positioning rod 708 can be ensured. At this time, the second spring 710 is forced to contract, and at this time, the arc-shaped positioning plate 704 does not contact the inner wall of the second tower barrel body 1. Then, by driving the driving motor 603, the fixed plate 604, the connecting rod 605, the support frame 701, the movable frame 702, the arc-shaped positioning plate 704, and the positioning rod 708 can be rotated. At this time, the positioning rod 708 rolls in contact with the inner wall of the lower inner flange 101 of the second tower barrel body 1 until the positioning rod 708 is engaged with the positioning slot 103 on the lower inner flange 101 of the second tower barrel body 1. At this time, under the elastic force of the second spring 710, the positioning rod 708 is engaged with the positioning slot 103 on the lower inner flange 101 of the second tower barrel body 1, thereby realizing the primary positioning. By controlling the further contraction of the hydraulic rod 602, at this time, the arc-shaped positioning plate 704 continues to move until the arc-shaped positioning plate 704 contacts the inner wall of the second tower barrel body 1. Since the moving distances of the arc-shaped positioning plates 704 are equal, when all four arc-shaped positioning plates 704 contact the inner wall of the second tower barrel body 1 to generate pressure, it indicates that the central axis of the second tower barrel body 1 coincides with the central axis of the lowermost tower barrel body 1, thereby realizing the secondary positioning of the second tower barrel body 1 and the lowermost tower barrel body 1. After the positioning and installation, continue to lower the second tower barrel body 1. At this time, observe whether the position of the positioning rod 708 engaged with the positioning slot 103 on the lower inner flange 101 of the second tower barrel body 1 is engaged with the positioning slot 103 on the upper inner flange 101 of the lowermost tower barrel body 1. If the positioning rod 708 is engaged with the positioning slot 103 on the upper inner flange 101 of the lowermost tower barrel body 1, continue to lower the second tower barrel body 1 so that the positioning rod 708 engaged with the positioning slot 103 on the lower inner flange 101 of the second tower barrel body 1 is synchronously engaged with the positioning slot 103 on the upper inner flange 101 of the lowermost tower barrel body 1, thereby realizing the positioning of the threaded holes 102 on the upper and lower inner flanges 101. If the position of the positioning rod 708 does not match the positioning slot 103 on the upper inner flange 101 of the lowermost tower barrel body 1, at this time, control the driving motor 603 to start again,Thereby driving the positioning rod 708 and the arc-shaped positioning plate 704 to rotate. With the cooperation of the frictional force between the arc-shaped positioning plates 704 and the engagement between the positioning rod 708 and the positioning slot 103 on the second tower barrel body 1, the second tower barrel body 1 can be rotated synchronously by a small angle until the positioning rod 708 and the positioning slot 103 on the upper inner flange 101 of the lowermost tower barrel body 1 are in mutual cooperation. According to the above principle, the positioning of the central axes of the two tower barrel bodies 1 and the positioning of the threaded holes 102 can be achieved, greatly improving the assembly efficiency of the two tower barrel bodies 1;

[0030] The seismic resistance mechanism 5 includes a fixed rod 501, and the upper end of the fixed rod 501 is fixedly connected to the workbench 4, and an installation ring 502 is fixed to the lower end of the fixed rod 501; spring dampers 503 are fixedly arranged at equal angles inside the installation ring 502, and a rollable ball 504 is installed at the end of the spring damper 503, and the ball 504 contacts the gravity block 506; the upper end of the gravity block 506 is fixedly connected to one end of the steel cable 505, and the other end of the steel cable 505 is fixedly connected to the workbench 4, and the central axis of the gravity block 506 coincides with the central axis of the workbench 4;

[0031] After the assembly of multiple tower barrel bodies 1 is completed, during actual use, such as Figures 1-7 As shown, when the tower body composed of multiple tower barrel bodies 1 shakes due to external forces, at this time, the gravity block 506 moves synchronously under the action of potential energy. The movement of the gravity block 506 generates a force on the spring damper 503, causing the spring damper 503 to move and generate a damping force. Through the damping action of the spring damper 503, the vibration of the tower barrel body 1 and the gravity block 506 can be gradually weakened, thereby quickly stabilizing the tower barrel body 1 and improving the seismic resistance of the tower barrel body 1. And because the movement of the gravity block 506 is a non-linear movement, through the contact and rolling action between the ball 504 and the gravity block 506, the force generated by the gravity block 506 can be normally transmitted to the spring damper 503 to ensure the normal operation of the device. This is the working principle of the variable cross-section wind tower barrel.

[0032] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0033] In this article, specific examples are used to illustrate the principles and implementation methods of the present invention. The descriptions of the above examples are only for helping to understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limited nature of literal expression and objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. A wind tower with a variable cross-section, comprising a tower body (1), a base (2) and a power generation mechanism (3), wherein the tower body (1) is mounted on the base (2), and the diameter of the tower body (1) gradually decreases from bottom to top, and the tower bodies (1) are assembled to form a tower body, and the tower body (1) is mounted on the upper end of the tower body (1), characterized in that: A workbench (4) is fixed inside the tower body (1), an anti-seismic mechanism (5) is installed on the lower side of the workbench (4), a driving mechanism (6) is installed on the workbench (4), the driving mechanism (6) and a positioning mechanism (7) are connected to each other, the positioning mechanism (7) comprises a support frame (701), the support frame (701) and the tower body (1) are slidably connected, and the support frame (701) is a cross-shaped structure, a movable frame (702) is slidably connected to the support frame (701), and the A bracket (703) is fixed on the movable frame (702), and the bracket (703) contacts and slides with the arc-shaped positioning plate (704), and the arc-shaped positioning plates (704) are arranged in four groups at equal angles, and the arc-shaped positioning plates (704) are in contact with the inner wall of the tower body (1) to achieve positioning. A mounting frame (707) is arranged on the side of the movable frame (702), and a positioning rod (708) is connected to the bearing on the mounting frame (707), and the positioning rod (708) is engaged with the positioning slot (103) to achieve the positioning effect.

2. A variable cross-section wind tower according to claim 1, characterized in that: The tower body (1) is provided with inner flanges (101) fixed at the top and bottom of the inner side, and threaded holes (102) are provided on the inner flanges (101) at equal angles, and positioning slots (103) are provided on the inner flanges (101) at equal angles, and the positioning slots (103) correspond to the threaded holes (102) one by one, and a staircase (104) is fixedly installed in the tower body (1).

3. A variable cross-section wind tower according to claim 1, characterized in that: The anti-seismic mechanism (5) comprises a fixing rod (501), wherein the upper end of the fixing rod (501) and the workbench (4) are fixed to each other, and a mounting ring (502) is fixed to the lower end of the fixing rod (501).

4. A variable cross-section wind tower according to claim 3, characterized in that: A spring damper (503) is fixed at an equal angle inside the mounting ring (502), and a rollable ball (504) is installed at the end of the spring damper (503), and the ball (504) is in contact with a gravity block (506).

5. A variable cross-section wind tower according to claim 4, characterized in that: The upper end of the gravity block (506) is fixed to one end of the steel cable (505), and the other end of the steel cable (505) is fixed to the workbench (4), and the central axis of the gravity block (506) coincides with the central axis of the workbench (4).

6. A variable cross-section wind tower according to claim 1, characterized in that: The driving mechanism (6) comprises a hydraulic oil tank (601), and the hydraulic oil tank (601) is fixed on the workbench (4), and the hydraulic oil tank (601) is connected to the hydraulic rod (602) through a conduit and an oil pump, and the hydraulic rod (602) and the workbench (4) are fixedly connected, and the hydraulic rod (602) and the support frame (701) are connected by a bearing.

7. A variable cross-section wind tower according to claim 6, characterized in that: The output end of the hydraulic rod (602) is fixed with a driving motor (603), and the output end of the driving motor (603) is fixed with a fixing plate (604), and the fixing plate (604) is rotatably connected to one end of a connecting rod (605), and the other end of the connecting rod (605) is rotatably connected to a movable frame (702), and the connecting rod (605) and the movable frame (702) are distributed in a one-to-one correspondence.

8. The variable cross-section wind tower according to claim 1, characterized in that: The arc-shaped positioning plates (704) and the positioning rods (708) are distributed in a one-to-one correspondence, and the contact surface between the arc-shaped positioning plates (704) and the inner wall of the tower body (1) is a rough structure.

9. The variable cross-section wind tower according to claim 1, characterized in that: A vertical rod (705) is vertically fixed on the arc-shaped positioning plate (704), and the vertical rod (705) and the bracket (703) are slidably connected, and a first spring (706) is also fixed between the vertical rod (705) and the bracket (703).

10. The variable cross-section wind tower according to claim 1, characterized in that: A sliding rod (709) is fixed on the mounting frame (707), and the sliding rod (709) is slidably connected to the movable frame (702), and a second spring (710) is also fixed between the sliding rod (709) and the movable frame (702).

Images