A seismic isolation and vibration reduction device for reducing the sway amplitude of a wind tower

Abstract

The present invention discloses a seismic isolation device for reducing the shaking amplitude of a wind tower, belonging to the technical field of outdoor tower structures, comprising a tower base supporting the tower, wherein the tower base is fixed with an inner column, and the inner column is provided with a plurality of yielding support parts, wherein the yielding support parts comprise a plurality of movable supporting wind plates supported on the upper and lower sides of the wind tunnel. The present invention is used for wind and earthquake resistance of outdoor towers. When the amount of wind blowing toward the tower is too large, the side with the largest relative wind pressure presses the supporting wind plates into the tower, and the supporting wind plates leave the wind tunnel. The opening of the wind tunnel reduces the force-bearing area of ​​the tower, thereby reducing the shaking amplitude of the wind tower; when the wind force is too small, the supporting wind plates fill the wind tunnel to provide vertical support for the tower, thereby preventing vibration from damaging the structure of the tower. The seismic isolation device is arranged in the field with the tower, has the effect of wind and earthquake resistance, reduces the shaking amplitude of the tower during wind blowing, and also ensures its earthquake resistance and structural tightness.

Description

Technical Field

[0001] The invention belongs to the technical field of outdoor tower structures, and in particular relates to a seismic isolation device for reducing the shaking amplitude of a wind tower. Background Art

[0002] A wind tower is a functional tower that is set up in the wild for a long time. It can be used as a fixed point mark and can also be installed with various functional components, such as lights, billboards or climbing ladders. Because it needs to be set up in the wild for a long time, the tower needs a certain degree of wind and earthquake resistance. In a wild environment with strong winds, the tower will produce a large shaking amplitude under the influence of wind, and eventually cause the tower to collapse or be damaged. Towers set up in vibration zones will also be affected by vibrations. Therefore, it is necessary to set up a seismic isolation device that is both wind-resistant and earthquake-resistant. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a seismic isolation device for reducing the shaking amplitude of a wind tower, thereby providing the tower with a structure that is both wind-resistant and earthquake-resistant.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention includes a tower base for supporting a tower, wherein an inner column having the same height as the tower is vertically fixed on the tower base, the inner column is located inside the tower, a plurality of yielding support parts are arranged on the inner column, the yielding support parts include a cross beam, a sliding beam and two supporting wind plates, the two supporting wind plates are respectively fixed at the two ends of the sliding beam, one end of the cross beam is fixed to the side surface of the inner column, the sliding beam is slidably arranged at the outer end of the cross beam, two baffles are fixed on the sliding beam, the two baffles are respectively located on the two sides of the cross beam, a spring is arranged between the baffle and the cross beam, the two supporting wind plates of each yielding support part are respectively located on the two sides of the tower, the tower is provided with a wind tunnel at the position of the supporting wind plates, and the supporting wind plates are supported on the upper and lower sides of the wind tunnel.

[0006] Furthermore, the wind tunnel is square, and the supporting wind plate includes a plurality of supporting columns, two transverse plates and a wind shield, the plurality of supporting columns are supported between the two transverse plates, the wind shield is located between the two transverse plates, the two transverse plates are respectively supported on the upper and lower sides of the wind tunnel, and the width of the transverse plate is greater than the side thickness of the wind tunnel.

[0007] Furthermore, two edges of the transverse plate are rounded.

[0008] Furthermore, two limit blocks for limiting the moving distance of the sliding beam are fixed on the sliding beam, and the two limit blocks are respectively located on both sides of the cross beam. Outer plates are extended outward on both sides of the cross plate, and a number of support columns are supported between the outer plates. When the sliding beam is at the limit moving distance position, the outer plates are supported on the upper and lower sides of the wind tunnel, and the support columns located on the outer plates are supported on the upper and lower sides of the wind tunnel.

[0009] Furthermore, the tower base includes a base and a top plate, and a plurality of steel plates and rubber plates with openings in the middle are overlapped in sequence between the base and the top plate. A plurality of retaining columns are fixed on the base, and the retaining columns are disposed at the four inner corners of the steel plate and the rubber plate. A plurality of lead columns are also fixed between the base and the top plate, and the lead columns pass through the steel plate and the rubber plate respectively. The inner column is fixed in the middle of the base, and the inner column passes through the top plate and is supported on the inner top of the tower. The side wall of the tower is supported above the steel plate and the rubber plate.

[0010] Furthermore, the yielding support parts are evenly distributed along the inner columns, and the supporting wind plates are evenly located on the sides of the tower.

[0011] The beneficial effects of the present invention are:

[0012] The present invention is used for outdoor towers to resist wind and earthquakes. When the wind volume blowing toward the tower is too large, the side with the largest relative wind pressure squeezes the supporting wind plate into the tower, and the supporting wind plate leaves the wind tunnel, so that the wind flow passes through the wind tunnel of the tower to avoid being squeezed on the surface of the wind tower. The opening of the wind tunnel reduces the force-bearing area of ​​the tower, thereby reducing the shaking amplitude of the wind tower. When the wind force is too small to compress the supporting wind plate, the supporting wind plate is filled in the wind tunnel to provide vertical support for the tower. Through the support of the supporting wind plate in the wind tunnel, insufficient structural support caused by too many wind tunnels of the tower is avoided, thereby preventing vibration from damaging the structure of the tower. This seismic isolation device is arranged in the field with the tower, and has the effect of resisting wind and earthquakes. While reducing the shaking amplitude of the tower during wind blowing, it also ensures its seismic resistance and structural tightness.

[0013] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0015] Figure 1 It is an overall schematic diagram of a seismic isolation device according to an embodiment of the present invention;

[0016] Figure 2 It is a structural schematic diagram of a yield support portion according to the first embodiment of the present invention;

[0017] Figure 3 for Figure 2 A magnified schematic diagram of point A;

[0018] Figure 4 It is a structural schematic diagram of a yield support portion according to a second embodiment of the present invention;

[0019] Figure 5 It is a structural schematic diagram of a base according to an embodiment of the present invention;

[0020] Figure 6 for Figure 5 An enlarged schematic diagram of point B;

[0021] The markings in the attached drawings are as follows: 1. vertical tower; 11. wind tunnel; 2. tower base; 21. base; 22. top plate; 23. steel plate; 24. rubber plate; 25. baffle column; 26. lead column; 3. inner column; 4. yield support; 41. cross beam; 42. sliding beam; 421. baffle plate; 422. spring; 423. limit block; 43. support wind plate; 431. support column; 432. cross plate; 433. wind shield plate; 434. outer plate. DETAILED DESCRIPTION

[0022] like Figures 1 - 6 As shown, the present invention provides a seismic isolation device for reducing the shaking amplitude of a wind tower. This structure is used for the wind and earthquake resistance of a tower 1 erected outdoors; Figure 1 In the first embodiment shown, the tower 1 is columnar and can be set to a cylindrical, square column or other shape according to the function of the tower 1; this embodiment introduces a seismic isolation device for a square column tower 1 for easy understanding; the seismic isolation device includes a tower base 2 supporting the tower 1, the tower base 2 is set under the bottom layer, and the top surface is flush with the ground, refer to Figure 5 An inner column 3 having the same height as the tower 1 is vertically fixed on the tower base 2. The inner column 3 is a steel column. The inner column 3 is located inside the tower 1. Figure 2, a number of yielding support portions 4 are provided on the inner column 3. The yielding support portion 4 includes a cross beam 41, a sliding beam 42 and two support wind plates 43. The two support wind plates 43 are respectively fixed at both ends of the sliding beam 42. One end of the cross beam 41 is welded and fixed to the side surface of the inner column 3, and the cross beam 41 is parallel to the horizontal plane. Two sliding beams 42 are provided and are simultaneously slidably arranged at the outer ends of the cross beam 41. Two baffle plates 421 are fixed on the sliding beam 42, and the two baffle plates 421 are respectively located on both sides of the cross beam 41. A spring 422 is provided between the baffle plate 421 and the cross beam 41. Under the support of the two springs 422, the support wind plates 43 arranged at both ends of the sliding beam 42 are respectively located on two opposite surfaces of the vertical tower 1. The vertical tower 1 is provided with wind holes 11 at the positions of the support wind plates 43, and the support wind plates 43 support on the upper and lower sides of the wind holes 11. The yielding support portions 4 are evenly distributed along the inner column 3, and a pair of yielding support portions 4 are provided for each section of the inner column 3. The moving directions of the sliding beams 42 in the two yielding support portions 4 are the same. In the yielding support portion 4 of the next section, the moving direction of the sliding beam 42 is perpendicular to the moving direction of the sliding beam 42 in the previous section. This setting method can make the support wind plates 43 evenly located on the peripheral sides of the vertical tower 1, ensuring that the number of wind holes 11 around the vertical tower 1 is basically the same.

[0023] This seismic isolation and vibration reduction device is used for wind resistance and seismic resistance of the outdoor vertical tower 1. When the wind volume blowing towards the vertical tower 1 is too large, the support wind plate 43 is extruded into the vertical tower 1 on the side with the largest relative wind pressure. The support wind plate 43 leaves the wind hole 11, enabling the wind flow to pass through the wind hole 11 of the vertical tower 1, avoiding all extrusion on the surface of the wind tower. The opening of the wind hole 11 reduces the stress area of the vertical tower 1, thereby reducing the swaying amplitude of the wind tower; when the wind force is too small to compress the support wind plate 43, the support wind plate 43 fills the wind hole 11, providing vertical support for the vertical tower 1. Through the support of the support wind plate 43 on the wind hole 11, it is avoided that too many wind holes 11 of the vertical tower 1 lead to insufficient structural support, thereby preventing the structural damage of the vertical tower 1 caused by vibration. This seismic isolation and vibration reduction device is arranged outdoors in cooperation with the vertical tower 1, having the effects of wind resistance and seismic resistance, reducing the swaying amplitude of the vertical tower 1 during the blowing process, and also ensuring its seismic performance and structural compactness.

[0024] In a further solution, as Figure 2 shown, the wind hole 11 is square. The support wind plate 43 includes a number of support columns 431, two cross plates 432 and a wind baffle plate 433. The number of support columns 431 supports between the two cross plates 432. The wind baffle plate 433 is located between the two cross plates 432. The two cross plates 432 respectively support on the upper and lower sides of the wind hole 11. The width of the cross plate 432 is greater than the side thickness of the wind hole 11. Further, the two edges of the cross plate 432 are provided with rounded corners.

[0025] In this structure, the wind tunnel 11 is set to be square. The upper and lower sides of the wind tunnel 11 are parallel, and a support frame body is formed by a cross plate 432 and support columns 431. And a wind baffle 433 is arranged between the cross plates 432. The wind baffle 433 is pushed by the wind force, promoting the movement of the entire support wind plate 43. This structure can ensure the light weight of the support wind plate 43 while ensuring the support stability of the support wind plate 43. The cross plate 432 with rounded corners can ensure that the cross plate 432 can fit and support the upper and lower sides of the wind tunnel 11 as much as possible, and can smoothly enter and exit the wind tunnel 11.

[0026] In a further solution, as Figure 4 shown, the present invention further provides Embodiment 2. Two limit blocks 423 for limiting the moving distance of the sliding beam 42 are further fixed on the sliding beam 42. The two limit blocks 423 are respectively located on both sides of the cross beam 41. Outer plates 434 extend outward from both sides of the cross plate 432. A number of support columns 431 are also supported between the outer plates 434. When the sliding beam 42 reaches the limit moving distance position, the outer plates 434 support the upper and lower sides of the wind tunnel 11, and the support columns 431 located on the outer plates 434 support the upper and lower sides of the wind tunnel 11.

[0027] This structure further ensures that after the support wind plate 43 moves away from the wind tunnel 11, the wind tunnel 11 is still supported by the support columns 431 and the outer plates 434, avoiding damage to the entire tower 1 structure caused by vibration in the wild under strong wind conditions.

[0028] In a further solution, as Figure 5 and Figure 6 shown, the tower base 2 includes a base 21 and a top plate 22. The base 21 is a concrete base body. The top plate 22 is located above the base 21. The top plate 22 is the support bottom plate of the tower 1 and is flush with the horizontal plane. A number of steel plates 23 and rubber plates 24 with central openings are sequentially overlapped between the base 21 and the top plate 22. The steel plates 23 and the rubber plates 24 overlap with each other. The steel plates 23 and the rubber plates 24 are both in a square shape with openings. Four retaining columns 25 are fixed on the base 21. The retaining columns 25 are arranged at the inner corners of the steel plates 23 and the rubber plates 24. A number of lead columns 26 are also fixed between the base 21 and the top plate 22. The lead columns 26 respectively pass through the steel plates 23 and the rubber plates 24. The inner column 3 is fixed in the middle of the base 21. The inner column 3 passes through the top plate 22 and supports the inner top of the tower 1. The side wall of the tower 1 is supported above the steel plates 23 and the rubber plates 24.

[0029] Supported by a number of steel plates 23 and rubber plates 24, lateral deformation and recovery occur between the steel plates 23 and the rubber plates 24 during an earthquake. Friction is generated through this structure to dissipate and absorb the energy input into the structure by the earthquake, so as to reduce the seismic response of the standing tower 1 structure. The four retaining columns 25 can fix the steel plates 23 and the rubber plates 24, preventing the sliding of the steel plates 23 and the rubber plates 24 and integrating the tower base 2. Inserting lead cores into the steel plates 23 and the rubber plates 24 can obtain a compact seismic isolation device. The lead cores provide energy dissipation under earthquakes and yield strength and stiffness under static loads. Under the action of a low-level force, due to its high initial stiffness, its deformation is very small. Under the action of an earthquake, due to the yield of the lead cores, on the one hand, earthquake energy is consumed; on the other hand, the stiffness is reduced, achieving the purpose of extending the structural period.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A seismic isolation and vibration reduction device for reducing the sway amplitude of a wind tower, characterized in that: The invention comprises a tower base (2) for supporting a tower (1), wherein an inner column (3) having the same height as the tower (1) is vertically fixedly arranged on the tower base (2), wherein the inner column (3) is located inside the tower (1), and wherein a plurality of yielding support parts (4) are arranged on the inner column (3), wherein the yielding support parts (4) comprise a cross beam (41), a sliding beam (42) and two supporting wind plates (43), wherein the two supporting wind plates (43) are respectively fixed at two ends of the sliding beam (42), wherein one end of the cross beam (41) is fixed to the side of the inner column (3), and the sliding beam (42) is slidingly arranged At the outer end of the cross beam (41), two baffles (421) are fixed on the sliding beam (42), and the two baffles (421) are respectively located on both sides of the cross beam (41), and a spring (422) is provided between the baffles (421) and the cross beam (41). The two supporting wind plates (43) of each of the yielding support parts (4) are respectively located on two sides of the vertical tower (1), and the vertical tower (1) is provided with a wind tunnel (11) at the position of the supporting wind plates (43), and the supporting wind plates (43) are supported on the upper and lower sides of the wind tunnel (11).

2. The seismic isolation and vibration reduction device for reducing the sway amplitude of a wind tower according to claim 1, wherein: The wind tunnel (11) is square, and the supporting wind plate (43) comprises a plurality of supporting columns (431), two transverse plates (432) and a wind shield (433), wherein the plurality of supporting columns (431) are supported between the two transverse plates (432), the wind shield (433) is located between the two transverse plates (432), and the two transverse plates (432) are respectively supported on the upper and lower sides of the wind tunnel (11), and the width of the transverse plate (432) is greater than the side thickness of the wind tunnel (11).

3. The seismic isolation and vibration reduction device for reducing the sway amplitude of the wind tower according to claim 2, wherein: The two edges of the transverse plate (432) are rounded.

4. The seismic isolation and vibration reduction device for reducing the sway amplitude of the wind tower according to claim 2, characterized in that: Two limit blocks (423) for limiting the moving distance of the sliding beam (42) are fixed on the sliding beam (42), and the two limit blocks (423) are respectively located on both sides of the cross beam (41). Outer plates (434) are extended outward on both sides of the cross plate (432), and a plurality of support columns (431) are supported between the outer plates (434). When the sliding beam (42) is at the limit moving distance position, the outer plates (434) are supported on the upper and lower sides of the wind tunnel (11), and the support columns (431) located on the outer plates (434) are supported on the upper and lower sides of the wind tunnel (11).

5. The seismic isolation and vibration reduction device for reducing the sway amplitude of the wind tower according to claim 1, wherein: The tower base (2) comprises a base (21) and a top plate (22), a plurality of steel plates (23) and rubber plates (24) with openings in the middle being overlapped in sequence between the base (21) and the top plate (22), a plurality of blocking columns (25) being fixed on the base (21), the blocking columns (25) being blocked at the four inner corners of the steel plates (23) and the rubber plates (24), a plurality of lead columns (26) being fixed between the base (21) and the top plate (22), the lead columns (26) respectively passing through the steel plates (23) and the rubber plates (24), the inner column (3) being fixed at the middle of the base (21), the inner column (3) passing through the top plate (22) and being supported on the inner top of the tower (1), and the side wall of the tower (1) being supported above the steel plates (23) and the rubber plates (24).

6. The seismic isolation and damping device for reducing the sway amplitude of a wind tower according to claim 1, characterized in that: The yielding support parts (4) are evenly distributed along the inner column (3), and the supporting wind plates (43) are evenly located on the sides of the tower (1).

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