Multifunctional construction platform for concrete towers of wind turbines

Abstract

This invention discloses a multifunctional construction platform for concrete towers of wind turbines, comprising a support beam (3), a platform body (4), fixed connectors (61), vibration damping connectors (62), and vibration dampers (7). The support beam is a grid structure composed of several beams connected together, with several connection ends formed at the edges of the support beam. One end of each fixed connector is connected to a connection end, and one end of each vibration damping connector is connected to a connection end via a vibration damper. Fixed connectors and vibration damping connectors are arranged at both ends of each beam. The other ends of the fixed connectors and the other ends of the vibration damping connectors are installed on the wall of the concrete tower (1). The platform body is installed on the support beam, so that the platform body is horizontally erected inside the concrete tower. This invention can reduce the vibration impact of wind turbine operation on the concrete tower, and also ensures the balance and stability of the construction platform, improving the safety of the concrete tower and the construction platform.

Description

Technical Field

[0001] This invention relates to a concrete tower for wind turbines, and more particularly to a multi-functional construction platform for concrete towers for wind turbines. Background Technology

[0002] Wind power, as a clean energy technology, has been widely used in the "Three Norths" region of my country, which has abundant wind resources. As development in the "Three Norths" region becomes increasingly saturated, wind power is expanding into inland areas. Due to lower wind speeds in inland areas, and the increasing power output of wind turbines, the diameter of wind turbine rotors is growing larger, and the height of towers is also increasing. Currently, the tower height of onshore wind turbines in China has reached 120-160 meters. Currently, wind turbine towers include concrete towers, steel towers, and steel-concrete hybrid towers.

[0003] Existing technologies for concrete towers generally employ segmented or sectional prefabrication. Segmentation involves dividing the concrete tower into several concrete sections along its height, while sectionalization involves dividing each concrete section into several concrete segments along its circumference. After the concrete segments are prefabricated in the factory, they are transported to the site and assembled on a dedicated assembly platform. The concrete sections are then hoisted into place, and finally, prestress is applied to the entire concrete tower section to form a unified structure, i.e., the concrete tower itself.

[0004] In existing concrete tower construction techniques, a construction platform is typically installed inside the top concrete section. This platform is bolted to the wall of the concrete section and is used for tower construction and routine maintenance, such as threading steel strands, installing the steel tower section at the top of the concrete tower, and laying cables. However, existing construction platforms have a simple structure and limited function. Under external forces such as wind turbine operation and large wind loads, the concrete tower is easily affected and vibrates, resulting in poor installation stability of the construction platform and compromising construction safety. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-functional construction platform for concrete towers of wind turbines, which can reduce the vibration impact of external forces such as wind turbine operation on the concrete tower, and also ensure the balance and stability of the construction platform, thereby improving the safety of the concrete tower and the construction platform.

[0006] This invention is implemented as follows:

[0007] A multi-functional construction platform for concrete towers of wind turbines includes a support beam, a platform body, fixed connectors, vibration damping connectors, and vibration dampers. The support beam is a grid structure composed of several beams connected together, with several connection ends formed at the edges of the support beam. One end of each of the multiple fixed connectors is fixedly connected to the connection end of the support beam, and one end of each of the multiple vibration damping connectors is connected to the connection end of the support beam through vibration dampers. Fixed connectors and vibration damping connectors are arranged at both ends of each beam of the support beam. The other ends of the multiple fixed connectors and the other ends of the multiple vibration damping connectors are installed on the wall of the concrete tower. The platform body is installed on the support beam, so that the platform body is horizontally erected inside the concrete tower.

[0008] The diameter of the platform body is smaller than the inner diameter of the concrete tower.

[0009] The diameter of the platform body is 20-40cm smaller than the inner diameter of the concrete tower at its installation location.

[0010] The platform body is equipped with several stiffening ribs.

[0011] The platform body has a ladder notch, through which the ladder passes through the platform body, and the spacing between the supporting beams is greater than the width of the ladder notch.

[0012] The platform body is provided with a kick plate around its circumference, and the kick plate is set perpendicular to the platform body.

[0013] The height of the kickboard is 150-250mm, the kickboard has a circular structure, and the kickboard has a ladder opening.

[0014] Gaps are left between the several connecting ends of the supporting beam and the wall of the concrete tower.

[0015] The gap between the connecting end and the concrete tower wall is 5-10cm.

[0016] The number of fixed connectors is comparable to the number of vibration damping connectors, and the sum of the number of fixed connectors and vibration damping connectors is comparable to the number of connection ends of the support beam.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Because the present invention is equipped with vibration dampers, which are arranged at one end of each beam of the support beam, the vibration dampers can achieve the purpose of vibration reduction, reduce the impact of external forces such as wind turbine operation and wind load on the vibration of the concrete tower, improve the operational safety of the concrete tower, and at the same time ensure the installation stability of the construction platform on the concrete tower wall, thus improving the safety of the construction platform in use.

[0019] 2. Because the present invention is equipped with a vibration damper, which is vertically installed between the support beam and the connecting parts, it can fully exert its vibration damping effect when the vertical displacement difference between the two sides of the concrete tower wall is large due to external forces such as wind turbine operation and wind load. This reduces the vibration of the concrete tower and ensures the stability and safety of the construction platform inside the concrete tower, thereby reducing additional costs.

[0020] 3. Because the invention is equipped with a kick plate, it can effectively prevent personnel and materials on the construction platform from falling through the gap between the construction platform and the concrete tower wall, thus further ensuring the safety of the construction platform and the construction safety of the tower.

[0021] 4. Because the present invention has a ladder notch, it can effectively avoid ladders installed on the concrete tower wall, so as to meet the normal construction and use requirements of the concrete tower.

[0022] This invention, through the installation of vibration dampers, can reduce the vibration impact of external forces such as wind turbine operation and wind load on the concrete tower, and also ensure the installation balance and stability of the construction platform, thereby improving the safety of the concrete tower and the construction platform and meeting the construction and daily maintenance requirements of the concrete tower. Attached Figure Description

[0023] Figure 1 This is a perspective view of the multi-functional construction platform for the concrete tower of the wind turbine of the present invention;

[0024] Figure 2 This is a schematic diagram of the support beam in the multi-functional construction platform for the concrete tower of the wind turbine of the present invention;

[0025] Figure 3 This is an installation diagram of the multi-functional construction platform for the concrete tower of wind turbine units according to the present invention.

[0026] In the diagram, 1 is the concrete tower, 3 is the supporting beam, 4 is the platform body, 41 is the ladder notch, 5 is the kick plate, 61 is the fixed connector, 62 is the vibration damping connector, and 7 is the vibration damper. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Please see the appendix Figure 2 A multi-functional construction platform for concrete towers of wind turbines includes a support beam 3, a platform body 4, a fixing connector 61, a vibration damping connector 62, and a vibration damper 7; please refer to the appendix. Figure 3The support beam 3 is a grid structure composed of several beams connected together, with several connection ends formed at the edges of the support beam 3; one end of multiple fixed connectors 61 is fixedly connected to the connection ends of the support beam 3, and one end of multiple vibration damping connectors 62 is connected to the connection ends of the support beam 3 through vibration dampers 7, and fixed connectors 61 and vibration damping connectors 62 are respectively arranged at both ends of each beam of the support beam 3; the other ends of the multiple fixed connectors 61 and the other ends of the multiple vibration damping connectors 62 are installed on the cylinder wall of the concrete tower 1; the platform body 4 is installed on the support beam 3, so that the platform body 4 is horizontally erected inside the concrete tower 1, as shown in the attached figure. Figure 1 As shown. One end of each support beam 3 is fixed to the wall of the concrete tower 1 through a fixed connector 61, and the other end of each support beam 3 is indirectly fixed to the wall of the concrete tower 1 through a vibration damper 7. The vibration damper 7 can reduce vibration and improve the safety of the platform body 4 for tower construction and daily maintenance, while also reducing the vibration of the concrete tower 1.

[0029] The diameter of the platform body 4 is smaller than the inner diameter of the concrete tower 1, ensuring the installation of the platform body 4 inside the concrete tower 1 and reducing the direct impact of vibrations in the concrete tower 1 caused by external forces such as wind turbine operation and wind load on the platform body 4. Preferably, the platform body 4 can be made of patterned steel plate with a thickness of 4-6mm, and the platform body 4 can be fixedly installed on the support beam 3 by means of bolt connection or other methods.

[0030] Preferably, the diameter of the platform body 4 is 20-40cm smaller than the inner diameter of the concrete tower 1 at its installation location. This ensures sufficient construction space while avoiding direct connection and contact with the concrete tower 1, thus preventing mutual interference during vibration.

[0031] Preferably, the platform body 4 is provided with several stiffening ribs (not shown in the figure). If the span of the platform body 4 is large, the strength and rigidity of the platform body 4 can be effectively improved by stiffening ribs in order to ensure its load performance.

[0032] The platform body 4 has a ladder notch 41. The ladder (not shown in the figure) passes through the platform body 4 through the ladder notch 41. The spacing between the supporting beams 3 is greater than the width of the ladder notch 41. Ladders are commonly used facilities in the construction and maintenance of the concrete tower 1. Usually, ladders are installed on the inner wall of the concrete tower 1 as needed. The ladder notch 41 can avoid the ladder and ensure the installation of the ladder.

[0033] A kick plate 5 is provided circumferentially at the edge of the platform body 4, and the kick plate 5 is set perpendicular to the platform body 4. Since there is a large gap between the platform body 4 and the wall of the concrete tower 1, materials and personnel can easily fall. The kick plate 5 effectively prevents falls. Preferably, the kick plate 5 can be made of patterned steel plate with a thickness of 3-4mm. The length of the kick plate 5 can be determined according to the circumferential dimensions of the platform body 4, and the kick plate 5 can be welded to the platform body 4 using fillet welds.

[0034] Preferably, the height of the kick plate 5 is 150-250mm, the kick plate 5 has a circular structure, and the kick plate 5 is provided with a ladder opening to ensure avoidance of the ladder installation position.

[0035] The support beam 3 has gaps between several connecting ends and the wall of the concrete tower 1, which facilitates the installation of the fixing connector 61 and the vibration damping connector 62, so that the platform body 4 is coaxially installed inside the concrete tower 1, and also avoids the mutual influence between the concrete tower 1 and the support beam 3 when vibration occurs.

[0036] Preferably, the gap between the connecting end and the wall of the concrete tower 1 is 5-10cm, and the lengths of the fixing connector 61 and the vibration damping connector 62 are small, making installation convenient.

[0037] The number of fixed connectors 61 is equivalent to the number of vibration damping connectors 62, and the sum of the number of fixed connectors 61 and vibration damping connectors 62 is equivalent to the number of connection ends of the support beam 3. This ensures that each support beam 3 has a vibration damper 7 at one end to achieve vibration reduction, thereby ensuring the balance and stability of the platform body 4. The number of vibration dampers 7 is small, the cost is low, and additional costs are also reduced.

[0038] Preferably, the vibration damper 7 can be a viscous damper. The vibration damper 7 is vertically connected between the support beam 3 and the vibration damping connector 62. Since the concrete tower is a slender and tall structure, it is prone to bending deformation under load. The vertical displacement difference between the two sides of the tower wall is large. The vertically installed viscous damper can effectively reduce the vibration of the concrete tower and ensure the balance and stability of the platform body 4, thereby achieving the purpose of vibration reduction.

[0039] Example 1:

[0040] Four I-beams are cut to form the beam body, and the four beam bodies are welded to form a grid-shaped support beam 3. Eight connection ends are formed at the edge of the support beam 3, and a 10cm gap is left between each connection end and the wall of the concrete tower 1.

[0041] The platform body 4 is made of 5mm thick patterned steel plate. The diameter of the platform body 4 is 20cm smaller than the inner diameter of the concrete tower 1 at its installation location. A ladder notch 41 is left on the side of the platform body 4 to avoid interference with the ladder installed on the wall of the concrete tower 1. The platform body 4 is fixed to the top surface of the support beam 3 with bolts, and multiple stiffening ribs are provided on the bottom surface of the platform body 4.

[0042] The kick plate 5 is made of patterned steel plate with a thickness of 3mm. The kick plate 5 is set vertically along the circumference of the platform body 4 at the edge of the platform body 4. The height of the kick plate 5 is 150mm, and the kick plate 5 is provided with a ladder opening to avoid the ladder.

[0043] 250mm long I-beams are used as fixed connectors 61 and vibration damping connectors 62. One end of each of the four fixed connectors 61 and the four vibration damping connectors 62 is welded with a steel plate having bolt holes. One end of each fixed connector 61 is directly connected to the four connecting ends of the support beam 3 via bolts through the bolt holes on the steel plate. The other end of each fixed connector 61 is fixed to the wall of the concrete tower 1 via bolts. One end of each vibration damping connector 62 is connected to four vibration dampers 7 via bolts through the bolt holes on the steel plate. The other end of each vibration damping connector 62 is fixed to the wall of the concrete tower 1 via bolts. The four vibration dampers 7 are vertically connected to the bottom of the four connecting ends of the support beam 3. Fixed connectors 61 and vibration damping connectors 62 are respectively arranged at both ends of each beam of the support beam 3.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multifunctional construction platform for a wind turbine concrete tower, characterized in that: The utility model provides a kind of concrete tower platform, including support beam (3), platform main body (4), fixed connecting piece (61), damping connecting piece (62) and damper (7);Support beam (3) is the grid structure connected by several beam bodies, and a plurality of connecting ends are formed at the edge of support beam (3);The one end of multiple fixed connecting pieces (61) is respectively fixedly connected on the connecting end of support beam (3), and the one end of multiple damping connecting pieces (62) is respectively connected on the connecting end of support beam (3) by damper (7), and the both ends of each beam body of support beam (3) are arranged fixed connecting piece (61) and damping connecting piece (62) respectively;The other end of multiple fixed connecting pieces (61) and the other end of multiple damping connecting pieces (62) are mounted on the barrel wall of concrete tower barrel (1);Platform main body (4) is installed on support beam (3), so that platform main body (4) is horizontally erected in concrete tower barrel (1); The damper (7) is vertically connected between the support beam (3) and the damping connecting piece (62); The diameter of the platform main body (4) is less than the inner diameter of the concrete tower barrel (1); The platform main body (4) is formed with a ladder gap (41), and the ladder passes through the platform main body (4) through the ladder gap (41), and the beam body spacing of the support beam (3) is greater than the width of the ladder gap (41); The edge of the platform main body (4) is circumferentially provided with a skirting board (5), and the skirting board (5) is perpendicular to the platform main body (4); The support beam (3) has a plurality of connecting ends, and a gap is left between the connecting ends and the barrel wall of the concrete tower barrel (1).

2. The multifunctional construction platform for wind turbine concrete tower according to claim 1, characterized in that: The diameter of the platform main body (4) is 20-40 cm less than the inner diameter of the concrete tower barrel (1) at the installation position.

3. The multifunctional construction platform for a wind turbine tower according to claim 1 or 2, characterized in that: The platform main body (4) is provided with a plurality of stiffening ribs.

4. The multifunctional construction platform for wind turbine concrete tower according to claim 1, characterized in that: The height of the skirting board (5) is 150-250 mm, the skirting board (5) has a circular ring structure, and the skirting board (5) is provided with a ladder opening.

5. The multifunctional construction platform for wind turbine concrete tower according to claim 1, characterized in that: The gap between the connecting end and the barrel wall of the concrete tower barrel (1) is 5-10 cm.

6. The multifunctional construction platform for wind turbine concrete tower according to claim 1, characterized in that: The number of fixed connecting pieces (61) is equal to the number of damping connecting pieces (62), and the sum of the number of fixed connecting pieces (61) and the number of damping connecting pieces (62) is equal to the number of connecting ends of the support beam (3).

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