Adjustable hoisting device for wind power generation concrete tower drum

Abstract

The utility model relates to an adjustable hoisting device for a wind power generation concrete tower drum, which comprises a rigid main rod, and the rigid main rod comprises a top main rod and an adjusting main rod; a lifting hook is arranged at the top of the top main rod; a plurality of rigid cross beams are annularly arrayed on the side wall; the upper portion of the adjusting main rod is slidably sleeved with a rigid auxiliary rod, the lower portion of the adjusting main rod is provided with external threads, an adjusting device is arranged below the rigid auxiliary rod, and the inner wall of the adjusting device is provided with internal threads which are matched with the external threads of the adjusting main rod and move up and down through threaded connection. A supporting rod piece is connected between the rigid auxiliary rod and the rigid cross beam; the bottom faces of the ends, away from the top main rod, of the rigid cross beams are connected with hanging rings, and a flexible connecting cable is connected between every two adjacent rigid cross beams. According to the device, through ingenious structural design and an adjusting mechanism, the radius of a plane formed by the lifting rings can be adjusted, and center alignment and horizontal adjustment of the lifting ring device are achieved, so that the lifting quality is improved, and the adaptability of the device to different tower drum shapes and diversified lifting requirements is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of onshore wind power generation, specifically to an adjustable hoisting device for a concrete tower for wind power generation. Technical Background

[0002] As wind power development continues, traditional steel towers are no longer sufficient to meet the design requirements of large-capacity wind turbines and tall towers. Meanwhile, concrete towers, with their unique advantages, are playing an increasingly prominent role in wind turbine tower construction. However, the installation of concrete towers faces numerous challenges, and the quality of this installation directly affects the overall structural safety and operational performance of the wind turbine tower.

[0003] Currently, the hoisting method for concrete towers of wind turbines mostly adopts prefabricated segment dry connection, combined with single-point multi-sling hoisting. However, this hoisting method has obvious drawbacks: the arrangement of the slings is difficult to control precisely, resulting in the sling centerline not being perfectly aligned with the lifting point centerline. This problem can easily cause deformation of the concrete tower, and even before the dry connection reaches its design strength, serious quality problems such as misalignment and edge chipping may occur. In addition, the size of the concrete tower of a wind turbine varies with height, and a single-size hoisting device is difficult to adapt to towers of different sizes, resulting in poor practicality.

[0004] In view of this, this utility model proposes an adjustable hoisting device for wind power generation concrete towers, aiming to overcome the above-mentioned problems and provide strong support for the development of the wind power industry. Utility Model Content

[0005] This utility model provides an adjustable hoisting device for wind power generation concrete towers.

[0006] The specific technical solution is: an adjustable hoisting device for a wind power generation concrete tower, comprising a rigid main rod, wherein the rigid main rod includes a top main rod and an adjustable main rod;

[0007] The top of the main rod is equipped with a hook, and multiple rigid crossbeams are arranged in a ring on the side wall; the upper part of the adjusting main rod is slidably fitted with a rigid auxiliary rod, and the lower part is provided with an external thread. An adjusting device is provided below the rigid auxiliary rod. The inner wall of the adjusting device is provided with an internal thread that matches the external thread of the adjusting main rod, and the up and down movement is realized through the threaded connection.

[0008] A supporting member connects the rigid auxiliary rod and the rigid crossbeam; a lifting ring is connected to the bottom surface of the end of the rigid crossbeam away from the top main rod; at least one flexible connecting cable connects two adjacent rigid crossbeams.

[0009] The rigid crossbeam has a hollow structure inside the part between the support rod and the flexible connecting cable, and the two ends of the hollow structure are respectively provided with a first inlet and a first outlet; the support rod also has a hollow structure inside, and the two ends of the hollow structure are respectively provided with a second inlet and a second outlet.

[0010] The rigid auxiliary rod has a corresponding through hole on its side wall near the support rod, and the through hole communicates with the annular through groove inside the rigid auxiliary rod; the adjusting device has a through hole.

[0011] The flexible connecting cable can pass through the rigid crossbeam, support rod, rigid auxiliary rod and adjustment device in sequence, and is tensioned and fixed below the through hole.

[0012] Furthermore, preferably, the rigid crossbeam is hinged to the top main rod via a fixed hinge support, and the supporting rod is hinged to both the rigid crossbeam and the rigid secondary rod via fixed hinge supports.

[0013] Furthermore, preferably, the rigid crossbeams consist of 8 beams.

[0014] Furthermore, preferably, the rigid main rod also includes a safety limiting part connected to the bottom of the adjusting main rod.

[0015] Furthermore, preferably, the rigid main rod is a one-piece structure, and the main rod axis remains vertical.

[0016] Furthermore, preferably, four adjustment handles are evenly distributed on the side wall of the adjustment device.

[0017] Furthermore, preferably, a leveling instrument is also provided at the top of the top main rod.

[0018] The beneficial effects of this invention are as follows: Firstly, the device adjusts the angle of the rigid crossbeam using an adjustment mechanism, thereby precisely adjusting the radius of the plane formed by the lifting ring to accurately match the radius of the concrete tower. Then, by fine-tuning the flexible connecting cable, the levelness of the lifting device is precisely calibrated, ensuring that the centerline of the lifting device, the centerline of the concrete tower, and the lifting centerline of the lifting machinery are consistent. This effectively solves the problems existing in current lifting methods, such as insufficient lifting accuracy, uneven stress, and tower deformation, significantly improving lifting quality and enhancing the device's adaptability to different tower shapes and diverse lifting requirements. Furthermore, the synergistic cooperation of multiple rigid crossbeams and flexible connecting cables effectively distributes the stress across the entire device, improving its stability and load-bearing capacity during lifting. Overall, this device offers advantages such as convenient operation, high stability, strong load-bearing capacity, and strong adaptability. It can be widely used for lifting segmented and cast-in-place concrete towers, providing a more reliable, efficient, and economical solution for the lifting of wind power generation concrete towers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an adjustable hoisting device for a wind power generation concrete tower according to the present invention;

[0020] Figure 2 This is a front view of an adjustable hoisting device for a wind power generation concrete tower according to the present invention.

[0021] Figure 3 for Figure 2 Partial structural diagram of the AA section;

[0022] Figure 4 This is a structural schematic diagram of a rigid main rod;

[0023] Figure 5 This is a schematic diagram of the internal structure of a rigid auxiliary rod;

[0024] Figure 6 This is a schematic diagram of the regulating device;

[0025] In the diagram: 1-rigid main rod, 101-top main rod, 102-adjusting main rod, 103-safety limit part;

[0026] 2-Adjusting device, 201-Adjusting handle, 202-Through hole;

[0027] 3- Rigid auxiliary rod, 301- Through hole, 302- Annular through groove;

[0028] 4- Rigid crossbeam, 401- First inlet, 402- First outlet;

[0029] 5-Support rod, 501-Second inlet, 502-Second outlet;

[0030] 6-Flexible connecting cable; 7-Lifting ring; 8-Hook; 9-Leveling instrument. Detailed Implementation

[0031] To make the technical problems and solutions solved by this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] like Figure 1 Figure 4 As shown in the figure, the adjustable hoisting device for a wind power generation concrete tower provided in this embodiment includes a rigid main rod 1, which includes a top main rod 101 and an adjustable main rod 102.

[0035] The top of the main rod 101 is equipped with a hook 8 for connecting to the hoisting machinery; its side wall has a ring array of multiple rigid crossbeams 4.

[0036] The upper part of the adjusting main rod 102 is fitted with a rigid secondary rod 3, and the lower part is provided with an external thread. Below the rigid secondary rod 3 is an adjusting device 2. The inner wall of the adjusting device 2 is provided with an internal thread, which matches the external thread of the adjusting main rod 102, and the up and down movement is realized through the threaded connection.

[0037] A supporting member 5 connects the rigid auxiliary rod 3 and the rigid crossbeam 4. A lifting ring 7 is connected to the bottom surface of the rigid crossbeam 4 away from the top main rod 101 for connection to the concrete tower. At least one flexible connecting cable 6 connects two adjacent rigid crossbeams 4.

[0038] like Figure 3 As shown, the rigid beam 4 has a hollow internal structure located between the supporting member 5 and the flexible connecting cable 6, with a first inlet 401 and a first outlet 402 at each end of the hollow structure; the supporting member 5 also has a hollow internal structure, with a second inlet 501 and a second outlet 502 at each end of the hollow structure. Figure 5 and Figure 6As shown, the rigid auxiliary rod 3 has a through hole 301 on its side wall near the support rod 5, and the through hole 301 communicates with the annular through groove 302 inside the rigid auxiliary rod 3; the adjusting device 2 also has a through hole 202. With this design, the flexible connecting cable 6 can pass through the rigid crossbeam 4, the support rod 5, the rigid auxiliary rod 3 and the adjusting device 2 in sequence, and finally be tensioned and fixed below the through hole 202 by a cable-locking device (such as an anchor). In this way, the two ends of the same flexible connecting cable 6 pass through two adjacent sets of rigid crossbeams 4, support rods 5, rigid auxiliary rods 3 and adjusting devices 2 respectively, and are fixed below two adjacent through holes 202.

[0039] When adjusting the hoisting device, the adjusting device 2 is rotated along the external thread on the adjusting main rod 102, thus moving the adjusting device 2 up and down. The height of the external thread is the adjustable height range. When the adjusting device 2 moves downward, the rigid auxiliary rod 3 moves downward under the action of gravity and the pull of the flexible connecting cable 6, which in turn drives the supporting rod 5 and the rigid crossbeam 4 connected to it to move downward. This process pulls the far end of the rigid crossbeam 4 away from the top main rod 101 downward, thereby changing the radius of the plane formed by all the lifting rings 7 to accommodate concrete towers with different radii. In addition, the flexible connecting cable 6 connecting each pair of adjacent rigid crossbeams 4 not only makes the far ends of all the rigid crossbeams 4 form a whole, improving the stability of the entire device, but also allows for adjustment of the horizontality of the plane formed by all the rigid crossbeams 4 by fine-tuning the tension of the flexible connecting cable 6, so as to ensure uniform force distribution.

[0040] like Figure 2 As shown, in this preferred embodiment, the rigid beam 4 is hinged to the top main rod 101 via a fixed hinge support, and the support rod 5 is also hinged to the rigid beam 4 and the rigid auxiliary rod 3 via a fixed hinge support. This hinged connection not only facilitates the vertical movement of each component but also ensures that the rigid beam 4 only moves in the vertical direction, avoiding unnecessary horizontal offset.

[0041] like Figure 1 Figure 2 As shown, in this preferred embodiment, there are preferably 8 rigid beams 4, which can effectively distribute the force on the entire device and improve the stability and load-bearing capacity during the hoisting process.

[0042] like Figure 4 As shown, in a preferred embodiment, the rigid main rod 1 further includes a safety limiting part 103 connected to the bottom of the adjusting main rod 102, which limits the maximum adjustment displacement of the adjusting device 2, prevents over-adjustment from causing damage to the device, and ensures the safety of the hoisting process. Furthermore, the rigid main rod 1 adopts an integrated structure, which ensures both the verticality of the main rod shaft and improves the overall stability of the device.

[0043] like Figure 6 As shown, in a preferred embodiment, four adjustment handles 201 are evenly distributed on the side wall of the adjustment device 2. The adjustment device 2 can be quickly rotated through the adjustment handles 201 to achieve rapid adjustment.

[0044] like Figure 4 As shown, as a preferred embodiment, the top of the top main rod 101 is also equipped with a leveling instrument 9 for leveling the hoisting device, ensuring that the center line of the hoisting device, the center line of the concrete tower, and the hoisting center line of the hoisting machinery are consistent during the hoisting process, thereby improving the accuracy and safety of the hoisting.

[0045] Working Principle: When hoisting the concrete tower, the hoisting device is first placed in its initial state, with the top surface of the rigid auxiliary rod 3 in close contact with the bottom surface of the top main rod 101. Based on the radius of the concrete tower, the adjusting device 2 is then adjusted. The adjusting handle 201 is gripped and rotated, causing the adjusting device 2 to rotate downwards along the external thread of the adjusting main rod 102. At this time, the rigid auxiliary rod 3 moves downwards under the influence of gravity and the pull of the flexible connecting cable 6, thereby driving the connected support rod 5 and rigid crossbeam 4 downwards. This process pulls the far end of the rigid crossbeam 4 away from the top main rod 101 downwards, thus changing the radius of the plane formed by all the lifting rings 7 until it corresponds to the radius of the hoisted concrete tower, completing the radius adjustment of the hoisting device.

[0046] Subsequently, connect the hook 8 to the lifting machinery and fine-tune the tension of the eight flexible connecting cables 6 again, observing the leveling instrument 9 while adjusting. When the leveling instrument 9 indicates that the lifting device is level, fix each flexible connecting cable 6. Finally, use slings to connect the concrete tower to be installed to the lifting ring 7, ensuring a secure connection before lifting.

[0047] The adjustable hoisting device for wind power concrete towers provided by this utility model, through its ingenious structural design and adjustment mechanism, can effectively solve the problems existing in the current hoisting methods, improve the hoisting quality, enhance the adaptability and practicality of the device, and provide a more reliable, efficient and economical solution for the hoisting of wind power concrete towers.

[0048] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable hoisting device for a wind power generation concrete tower, comprising a rigid main rod (1), characterized in that: The rigid main rod (1) includes a top main rod (101) and an adjusting main rod (102). The top main rod (101) is provided with a hook (8) at the top and multiple rigid crossbeams (4) are arranged in a ring on the side wall; the upper part of the adjusting main rod (102) is slidably fitted with a rigid auxiliary rod (3) and the lower part is provided with an external thread. An adjusting device (2) is provided below the rigid auxiliary rod (3). The inner wall of the adjusting device (2) is provided with an internal thread, which matches the external thread of the adjusting main rod (102). The up and down movement is realized through the threaded connection. A support member (5) is connected between the rigid sub-rod (3) and the rigid crossbeam (4); a lifting ring (7) is connected to the bottom surface of the end of the rigid crossbeam (4) away from the top main rod (101); at least one flexible connecting cable (6) is connected between two adjacent rigid crossbeams (4). The rigid beam (4) located between the support member (5) and the flexible connecting cable (6) has a hollow internal structure, and the two ends of the hollow structure are respectively provided with a first inlet (401) and a first outlet (402); the support member (5) also has a hollow internal structure, and the two ends of the hollow structure are respectively provided with a second inlet (501) and a second outlet (502). The rigid auxiliary rod (3) has a through hole (301) on the side wall near the support rod (5), and the through hole (301) is connected to the annular through groove (302) inside the rigid auxiliary rod (3); the adjusting device (2) has a through hole (202). The flexible connecting cable (6) can pass through the rigid crossbeam (4), the support rod (5), the rigid auxiliary rod (3) and the adjustment device (2) in sequence, and be tensioned and fixed below the through hole (202).

2. The adjustable hoisting device for a wind power generation concrete tower according to claim 1, characterized in that: The rigid crossbeam (4) is hinged to the top main rod (101) via a fixed hinge support, and the support rod (5) is hinged to both the rigid crossbeam (4) and the rigid secondary rod (3) via a fixed hinge support.

3. An adjustable hoisting device for a wind power generation concrete tower according to claim 1 or 2, characterized in that: The rigid crossbeams (4) consist of 8 beams.

4. An adjustable hoisting device for a wind power generation concrete tower according to claim 1 or 2, characterized in that: The rigid main rod (1) also includes a safety limiting part (103) connected to the bottom of the adjusting main rod (102).

5. The adjustable hoisting device for a wind power generation concrete tower according to claim 4, characterized in that: The rigid main rod (1) is a one-piece structure, and the main shaft of the main rod remains vertical.

6. An adjustable hoisting device for a wind power generation concrete tower according to claim 1 or 2, characterized in that: Four adjustment handles (201) are evenly distributed on the side wall of the adjustment device (2).

7. An adjustable hoisting device for a wind power generation concrete tower according to claim 1 or 2, characterized in that: A leveling instrument (9) is also provided at the top of the top main rod (101).

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