Self-lifting hoisting operation platform for wind turbine hybrid tower construction

Abstract

The present invention belongs to the technical field of wind turbine tower construction and discloses a self-lifting hoisting operation platform for wind turbine hybrid tower construction, comprising a platform body, a winding drum, a lifting device, and a fixing device. The winding drum is rotatably connected to the center of the platform body, a driving device is fixed to the platform body, and partitions are fixed to the outer wall of the winding drum, with N partitions spaced apart along the axis of the winding drum. The lifting device comprises a lifting cable, a fixed pulley, and a fixed lug plate for fixing to the inner wall of the tower. The fixed pulley is rotatably connected to the platform body. One end of the lifting cable is detachably attached to the fixed lug plate, and the other end is fixed to the winding drum through the guide of the fixed pulley. Different lifting cables are wound around different winding areas of the winding drum. The fixing device comprises a fixing cable, one end of which is attached to the fixed lug plate and the other end is fixed to the platform body. The present invention can reduce waiting time and greatly improve construction efficiency, and is suitable for installing tower sections of wind turbine towers.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power tower construction, and relates to a wind power mixed tower construction operation platform, in particular to a wind power mixed tower construction self-lifting and hoisting operation platform. Background Art

[0002] A wind turbine generator system consists of a concrete tower and power generation components. The concrete tower is composed of multiple tower sections, which are generally 3 to 4 meters tall. During tower construction, a temporary construction platform is built at the connection point of the tower sections to accommodate construction workers and store construction materials. The tower section to be installed is then hoisted from the ground to the installation location using a lifting machine. The temporary construction platform needs to be fixed to the inner wall of the concrete tower. Construction workers use the platform to apply slurry to the tower section seat and install the previous tower section. After each tower section is completed, the temporary construction platform needs to be lifted and fixed to the top of the newly installed tower section before construction of the next tower section can be carried out. The installation height of the temporary construction platform gradually increases with the number of tower sections installed.

[0003] In the prior art, the lifting of temporary construction platforms mainly relies on large cranes. During the lifting process, the temporary construction platform is first hoisted by the large crane. After the connection between the temporary construction platform and the interior of the tower is removed, the large crane hoisting hook lifts the temporary construction platform to the fixed position of the upper tower section. The temporary construction platform is then fixed on the inner wall of the newly installed tower section. This step is gradually carried out until the installation of the uppermost tower section is completed. This method of lifting the temporary construction platform has the following disadvantages: since a large crane is required for the installation of a concrete tower, when installing a new tower section, the temporary construction platform needs to be lifted to the corresponding position by the large crane first, and then the tower section can be hoisted after it is fixed. During the hoisting process, the hook of the large crane needs to be lowered from a high position to the ground, and then lifted from the ground to the position to be installed. However, the crane has a slow operating speed, and construction workers need to wait for a long time on the temporary construction platform, which greatly reduces construction efficiency. Summary of the Invention

[0004] In order to solve the above deficiencies in the prior art, the present invention aims to provide a self-lifting hoisting operation platform for wind turbine hybrid tower construction, so as to achieve the purpose of improving construction efficiency.

[0005] To achieve the above object, the technical solutions adopted by the present invention are as follows:

[0006] A self-lifting hoisting operation platform for wind power hybrid tower construction, comprising a platform body, a winding drum, a lifting device for lifting the platform body, and a fixing device for fixing the platform body;

[0007] The winding drum is rotatably connected to the center of the platform body. A driving device for driving the winding drum to rotate is fixed on the platform body. A partition is fixed on the outer wall of the winding drum. The partitions are arranged at intervals of N along the axis of the winding drum, dividing the winding drum into N-1 groove-shaped winding areas along the axis.

[0008] The number of the lifting devices matches the number of the winding areas, with at least three being provided and evenly spaced with the winding drum as the center. The lifting device includes a lifting rope, a fixed pulley, and a fixed ear plate for fixing to the inner wall of the tower. The fixed pulley is rotatably connected to the platform body. One end of the lifting rope is detachably provided on the fixed ear plate, and the other end is fixed to the winding drum through the guidance of the fixed pulley. Different lifting ropes are wound around different winding areas of the winding drum.

[0009] The fixing device includes a fixing rope, one end of which is detachably arranged on the fixing ear plate, and the other end of which is fixed on the platform body.

[0010] As a limitation of the present invention, the height of each fixed pulley is different, so that the height of each lifting rope after passing through the fixed pulley matches the height of the corresponding winding area on the winding drum.

[0011] As a further limitation of the present invention, the lifting rope extends to the fixed pulley along a tangential direction of the winding drum.

[0012] As another limitation of the present invention, a support frame is fixedly provided at the center of the platform body, and the driving device includes a rotating shaft, a motor, a driving gear fixed on the motor output shaft, and a driven gear fixed on the rotating shaft, one end of the rotating shaft is rotatably connected to the platform body, and the other end is rotatably connected to the support frame, and the driving gear is engaged with the driven gear.

[0013] As a limitation of the present invention, the platform body is a circular structure, including multiple circles of nested cross beams and multiple longitudinal beams connecting the cross beams. A panel is fixed on the frame structure formed by the cross beams and the longitudinal beams, and an opening is provided on the platform body for avoiding the ladder inside the tower.

[0014] As a further limitation of the present invention, the lifting lock is a steel wire rope, and a hook is fixed at one end, which is hung on the fixed ear plate through the hook.

[0015] As a third limitation of the present invention, the fixing rope is a steel wire rope or an iron chain, and a hook is fixed at one end and is hung on the fixing ear plate through the hook.

[0016] As a limitation of the present invention, five lifting devices are evenly spaced, six partitions are provided on the winding drum to divide the winding drum into five winding areas, and five fixing ear plates and five fixing ropes are provided.

[0017] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] (1) The present invention sets the fixed ear plate at the uppermost end of the tower section, drives the winding drum to wind up the lifting rope through the driving device to complete self-lifting, and after the ear plate is fixed by the original ladder in the tower, the starting motor can quickly lift the operating platform to the required position and then fix it through the fixed rope. During this process, the construction workers can always stand on the platform without standing under the platform, which is highly safe. At the same time, the shifting can be completed without using a large crane. The large crane can lift the tower section to be installed to the required position in advance. After the operating platform completes self-lifting and fixation, it can be put into the installation process of the tower section, saving the waiting time for lifting the tower section and greatly improving the work efficiency. Especially when installing a tower section at a higher position, due to the higher lifting height, the tower section can be hoisted in advance, and the time-saving effect is more obvious. During the self-lifting, different winding areas on the winding drum are used to reel in and unwind different lifting ropes, so that each lifting rope is independently wound in different areas on the winding drum without interfering with each other, and the overall force is uniform, the stability during lifting is high, the structure is ingenious and not complicated, it is easy to process, and the manufacturing cost is low.

[0019] (2) The height of each lifting rope of the present invention is consistent with the height of the corresponding winding area, and extends along the tangential direction of the winding drum, which improves the smoothness of the lifting rope winding on the winding drum and ensures the stability of the platform lifting.

[0020] In summary, the present invention can reduce waiting time, greatly improve construction efficiency, and is suitable for installing tower sections of wind power towers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the platform body without the panel according to an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of the three-dimensional structure of the support frame according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the other side of the platform body after removing the panel according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic structural diagram of the positional relationship between the winding drum and the support frame according to an embodiment of the present invention;

[0027] Figure 6 for Figure 4A schematic diagram of the enlarged structure of part A;

[0028] Figure 7 This is a structural diagram of the embodiment of the present invention when the operating platform is lifted.

[0029] In the figure: 1. Platform body; 11. Crossbeam; 12. Longitudinal beam; 13. Panel; 2. Support frame; 21. Top plate; 22. Bottom plate; 23. Enclosure; 24. Side support; 3. Winding drum; 4. Partition; 5. Driving device; 51. Rotating shaft; 52. Motor; 53. Driving gear; 54. Driven gear; 6. Lifting device; 61. Lifting rope; 62. Fixed pulley; 63. Fixed ear plate; 7. Hook; 8. Fixed rope; 91. Next tower section; 92. Current tower section; 93. Previous tower section. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention and are not intended to limit the present invention.

[0031] like Figure 1 As shown, it includes a platform body 1, a winding drum 3, a lifting device 6 and a fixing device. The platform body 1 is used to carry construction personnel and construction materials. The lifting device 6 is used to lift the platform body 1 to the desired position, and then fix the platform body 1 at the desired position through the fixing device. Construction personnel can then work on the platform body 1 without the help of a large crane. Therefore, the large crane can lift the tower section to be installed to the desired position during construction, and the tower section can be installed after the platform body 1 is in place, eliminating the time for waiting to lift the tower section and improving work efficiency. In addition, since the tower is relatively high, the higher the construction position is, the higher the height of the tower section lifted by the large crane is. Since the tower section is relatively large, the lifting speed of the large crane is relatively slow, and the lifting time is longer. If the tower section is hoisted to the installation position in advance, it can greatly save time and improve construction efficiency. The specific structure is described in detail below.

[0032] like Figure 1 、 Figure 2 As shown, the platform body 1 is a circular structure, including a crossbeam 11, a longitudinal beam 12, and a panel 13. The crossbeam 11 is made of square tubes bent into a circle. The crossbeam 11 is arranged in multiple circles to form a mutually nested structure. The longitudinal beams 12 are made of square tubes and fixedly connect the crossbeams 11 in each circle. This embodiment is provided with five longer longitudinal beams 12, which divide the circular platform body 1 into five equal parts. The panel 13 is fixed to the crossbeams 11 and the longitudinal beams 12 to form the platform body 1. The platform body 1 is provided with an opening for avoiding the ladder inside the tower. The opening is located between the two longitudinal beams 12, and the two sides of the opening are connected by two shorter longitudinal beams 12. An opening is provided on the panel 13 corresponding to the position of the lifting device 6 for installing the lifting device 6.

[0033] like Figure 3 As shown, a support frame 2 is fixedly mounted in the center of the platform body 1. The support frame 2 comprises a top plate 21, a bottom plate 22, side braces 24, and a panel 23. The panel 23 is cylindrical and fixed to the circular top plate 21. The side braces 24 connect the top plate 21 and the circular bottom plate 22. There are five side braces 24, evenly spaced. The ends of the longitudinal beams 12 of the platform body 1 extend to the panel 23 of the support frame 2 and are fixedly connected to the panel 23.

[0034] like Figure 4 、 Figure 5 As shown, the winding drum 3 is rotatably connected to the support frame 2 at the center of the platform body 1 and is located between the top plate 21 and bottom plate 22 of the support frame 2. Six partitions 4 are fixed to the outer wall of the winding drum 3. The partitions 4 are spaced apart along the axis of the winding drum 3, dividing the winding drum 3 into five winding areas along the axis. The winding areas are blocked on both sides by the partitions 4, forming a groove-shaped winding area.

[0035] like Figure 4 、 Figure 6 As shown, a driving device 5 for driving the winding drum 3 to rotate is fixedly mounted on the support frame 2. The driving device 5 includes a rotating shaft 51, a motor 52, a driving gear 53, and a driven gear 54. One end of the rotating shaft 51 is rotatably connected to the top plate 21 of the support frame 2, and the other end is rotatably connected to the bottom plate 22 of the support frame 2. The winding drum 3 is fixedly mounted on the rotating shaft 51. The motor 52 is connected to a reducer and fixedly mounted on the top plate 21 of the support frame 2. The driving gear 53 is fixedly mounted on the output shaft of the reducer. The driven gear 54 is fixedly mounted on the rotating shaft 51. The driving gear 53 meshes with the driven gear 54, and the rotation of the motor 52 drives the winding drum 3 to rotate.

[0036] like Figure 1 、 Figure 2As shown, the number of lifting devices 6 matches the number of winding areas. In this embodiment, five lifting devices 6 are provided, and are evenly spaced with the winding drum 3 as the center. The lifting device 6 includes a lifting rope 61, a fixed pulley 62, and a fixed ear plate 63 for fixing to the inner wall of the tower. The fixed pulley 62 is rotatably connected to the longitudinal beam 12 of the platform body 1, and the rotation direction of the fixed pulley 62 is consistent with the extension direction of the longitudinal beam 12. The lifting rope 61 of this embodiment is a steel wire rope. A hook 7 is fixed at one end of the lifting rope 61. One end of the lifting rope 61 is hung on the fixed ear plate 63 through the hook 7, and the other end is fixed to the winding drum 3 through the guidance of the fixed pulley 62. Different lifting cables 61 are wound around different winding areas of the winding drum 3. Because these winding areas are located at different heights, to ensure smooth winding, each fixed pulley 62 is set at a different height so that the height of each lifting cable 61 after passing through the fixed pulley 62 matches the height of the corresponding winding area on the winding drum 3. Specifically, the fixed pulley 62 corresponding to the higher winding area is set higher, while the fixed pulley 62 corresponding to the lower winding area is set lower. This ensures that each lifting cable 61 is wound around the winding drum 3 in a substantially horizontal position due to the placement of the partition 4. If the lifting cables 61 were tilted, they would not only cause friction with the partition 4 but also generate significant tension on the rotation of the winding drum 3, affecting the smooth rotation of the winding drum 3. To further improve the smooth rotation of the winding drum 3, the lifting cables 61 extend tangentially to the winding drum 3 to the fixed pulley 62. Specifically, the longitudinal beam 12 of the platform body 1 is fixedly extended along the tangential payout of the winding drum 3.

[0037] The securing device includes securing cables 8, which are steel wire ropes or chains. The number of securing cables 8 matches the number of lifting cables 61. In this embodiment, five securing cables 8 are steel wire ropes. One end of each securing cable 8 is secured with a hook, which is attached to the securing lug 63. The other end is secured to the platform body 1.

[0038] The fixed ear plate 63 includes a vertical plate fixed on the inner wall of the tower and a horizontal plate fixed on the vertical plate. Since the fixed ear plate 63 needs to be hung with the lifting rope 61 and the fixing rope 8, two hanging holes are provided on the horizontal plate.

[0039] like Figure 7As shown, after the installation of the tower section 92 is completed, the operating platform is located at the top of the next tower section 91. When the next tower section 93 needs to be installed, the construction personnel use the existing ladder in the tower to fix a new set of fixing ear plates 63 to the inner wall of the upper end of the tower section 9, and then reverse the motor 52 to release the lifting rope 61, remove the hook 7 on the lifting rope 61, and hang it on the fixing ear plate 63 at the top of the tower section 92 through the existing ladder in the tower, and then rotate the motor 52 forward, tighten the lifting rope 61, slightly lift the platform, and remove the hook on the fixing rope 8 from the fixed wall of the next tower section 91. The fixed ear plate 63 is removed, and the fixed ear plate 63 on the next tower section 91 is removed. The lifting rope 61 is continued to be tightened, and the platform body 1 is lifted to the top of the current tower section 92. The hook of the fixing rope 8 is hooked to the fixed ear plate 63 at the top of the current tower section 92. The lifting rope 61 is slightly released to drop the platform body 1 so that the fixing rope 8 is stressed, and the platform body 1 enters the working state. At this time, the platform body 1 is located near the top of the current tower section 92, and the top of the current tower section 92 is at the waist of a person, which is convenient for construction workers to construct the connection between the bottom end of the previous tower section 93 and the top of the current tower section 92.

[0040] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A self-lifting hoisting operation platform for wind turbine hybrid tower construction, characterized by: It includes a platform body, a winding drum, a lifting device for lifting the platform body, and a fixing device for fixing the platform body; The winding drum is rotatably connected to the center of the platform body. A driving device for driving the winding drum to rotate is fixed on the platform body. A partition is fixed on the outer wall of the winding drum. The partitions are arranged at intervals of N along the axis of the winding drum, dividing the winding drum into N-1 groove-shaped winding areas along the axis. The number of the lifting devices matches the number of the winding areas, with at least three being provided and evenly spaced with the winding drum as the center. The lifting device includes a lifting rope, a fixed pulley, and a fixed ear plate for fixing to the inner wall of the tower. The fixed pulley is rotatably connected to the platform body. One end of the lifting rope is detachably provided on the fixed ear plate, and the other end is fixed to the winding drum through the guidance of the fixed pulley. Different lifting ropes are wound around different winding areas of the winding drum. The fixing device includes a fixing rope, one end of which is detachably mounted on the fixing lug plate, and the other end of which is fixed to the platform body; The lifting rope extends to the fixed pulley along the tangential direction of the winding drum.

2. The self-lifting hoisting operation platform for wind turbine hybrid tower construction according to claim 1 is characterized by: The height of each fixed pulley is different, so that the height of each lifting rope after passing through the fixed pulley matches the height of the corresponding winding area on the winding drum.

3. The self-lifting hoisting operation platform for wind turbine hybrid tower construction according to claim 1 or 2, characterized in that: A support frame is fixedly provided at the center of the platform body. The driving device includes a rotating shaft, a motor, a driving gear fixed on the output shaft of the motor, and a driven gear fixed on the rotating shaft. One end of the rotating shaft is rotatably connected to the platform body, and the other end is rotatably connected to the support frame. The driving gear is engaged with the driven gear.

4. The self-lifting hoisting operation platform for wind turbine hybrid tower construction according to claim 3 is characterized by: The platform body is a circular structure, including multiple circles of nested cross beams and multiple longitudinal beams connecting the cross beams. Panels are fixed on the frame structure formed by the cross beams and the longitudinal beams. An opening is provided on the platform body for avoiding the ladder inside the tower.

5. The self-lifting hoisting operation platform for wind turbine hybrid tower construction according to claim 4 is characterized by: The lifting rope is a steel wire rope, and a hook is fixedly provided at one end, and is hung on the fixed ear plate through the hook.

6. The self-lifting hoisting operation platform for wind turbine hybrid tower construction according to any one of claims 1, 2, 4, and 5, characterized in that: The fixing rope is a steel wire rope or an iron chain, and a hook is fixedly provided at one end thereof and is hung on the fixing lug plate through the hook.

7. The self-lifting hoisting operation platform for wind turbine hybrid tower construction according to claim 6 is characterized by: The lifting devices are evenly spaced and arranged in five pieces. The winding drum is provided with six partitions, which divide the winding drum into five winding areas. Five fixing lugs and five fixing ropes are provided.

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