A shock absorbing device for offshore wind power and a construction method thereof

Abstract

The present application relates to the technical field of seawater wind power engineering, and discloses a shock absorbing device for offshore wind power, comprising a first shock absorbing mechanism installed between a transition section and a jacket, the first shock absorbing mechanism comprising a mounting plate and a vertical rod mounted on the mounting plate, the mounting plate corresponding one-to-one with the support column of the jacket, the vertical rod comprising a first vertical rod and a second vertical rod, the first vertical rod being located at the center of the mounting plate, the second vertical rod being arranged at circumferential intervals around the first vertical rod, the first shock absorbing mechanism further comprising a plurality of steel balls, the steel balls being rotatably mounted on the mounting plate, the steel balls corresponding one-to-one with the vertical rods, the steel balls partially protruding from the mounting plate, the first vertical rod being provided with a first groove for accommodating the steel balls, the inner diameter of the first groove gradually increasing from the bottom to the notch of the groove, the second vertical rod being provided with a second groove for accommodating the steel balls, the inner diameter of the second groove being larger than the outer diameter of the steel balls. The present application can improve the stability of the transition section when installed on the jacket.

Description

Technical Field

[0001] The present application relates to the technical field of offshore wind power engineering, and in particular to a shock absorbing device for offshore wind power and a construction method thereof. Background Art

[0002] Wind energy, as a highly efficient and clean energy source, is one of the most technologically mature, scalable, and commercially viable power generation methods in the new energy sector. my country's offshore wind farm construction is gradually moving deeper into the ocean. Offshore wind farms may be planned near seismic zones, so seismic mitigation is often considered in their design.

[0003] An offshore wind turbine foundation consists of a jacket and a transition section mounted on the jacket. The transition section connects the upper and lower wind turbines. The lower end of the jacket is connected to a fixed pile, which is fixedly installed below the seabed. The upper end of the transition section and the jacket are exposed above the sea surface. The jacket comprises multiple support columns and diagonal support rods installed between adjacent jackets. Dampers are installed between the support columns and the transition section. The dampers transmit vibrations from submarine earthquakes to the jacket through the dampers, dissipating energy and reducing vibration, ensuring a stable installation of the transition section on the jacket.

[0004] Regarding the above-mentioned related technologies, the external loads transmitted to the jacket and the transition section at sea are multi-directional, and the existing energy dissipation and vibration reduction methods are relatively simple. Therefore, the stability of the transition section on the jacket needs to be improved. Summary of the Invention

[0005] In order to improve the stability of the transition section when it is installed on the jacket, the present application provides a shock absorbing device for offshore wind power and a construction method thereof.

[0006] In a first aspect, the present application provides a shock absorbing device for offshore wind power, which adopts the following technical solution:

[0007] A shock absorbing device for offshore wind power comprises a first shock absorbing mechanism installed between a transition section and a conductor frame, the first shock absorbing mechanism comprising a mounting plate and a vertical rod installed on the mounting plate, the mounting plate corresponding one-to-one to the support column of the conductor frame, the vertical rod comprising a first vertical rod and a second vertical rod, the first vertical rod being located at the center of the mounting plate, and a plurality of second vertical rods being arranged at circumferential intervals around the first vertical rod, the first shock absorbing mechanism also comprising a plurality of steel balls, the steel balls being rotatably mounted on the mounting plate, the steel balls corresponding one-to-one to the vertical rods, and the steel balls being partially exposed outside the mounting plate, the first vertical rod being provided with a first groove for accommodating the steel balls, the inner diameter of the first groove gradually increasing from the bottom of the first groove to the notch, the second vertical rod being provided with a second groove for accommodating the steel balls, the inner diameter of the second groove being larger than the outer diameter of the steel balls.

[0008] By adopting the above technical solution, any load from the seabed received by the jacket will be transmitted upward. The support column is in sliding contact with the transition section through the steel balls. The friction between the steel balls and the vertical rods and the friction between the steel balls and the transition section can dissipate energy and reduce shock on the transmitted vibration, so that the transition section can be stably installed on the jacket.

[0009] Because the transition section is installed on the conductor frame through steel balls, the horizontal position of the transition section is not constrained in any direction. The transition section can withstand wind loads from all directions. The transition section dissipates energy and reduces vibration through friction between the steel balls and the vertical rods, thereby improving the stability of the transition section installed on the conductor frame.

[0010] When the offshore wind turbine foundation is installed at sea, the first shock-absorbing mechanism is installed between the transition section and the jacket. The cooperation between the steel ball and the vertical rod enables the transition section to be stably installed on the jacket. The inner wall of the second groove limits the steel ball, so that the steel ball can only move within the range of the second groove.

[0011] If the external load is strong, the sliding range of the steel ball in the first groove and the second groove is larger. Since the inner diameter from the bottom of the first groove to the groove mouth gradually increases, the steel ball may overcome gravity and slide toward the inner wall of the first groove, thereby further improving the shock absorption effect. When the earthquake stops or the wind load weakens, the steel ball on the transition section returns to the bottom of the first groove along the inclined inner wall of the first groove. Therefore, the cooperation between the steel ball and the first groove can not only dissipate energy and reduce shock, but also reset the transition section.

[0012] Optionally, a second shock-absorbing mechanism is also included, which includes a float rod and a floating part installed on the float rod. The mounting plate is circumferentially arranged with the float rod as the center. The upper end of the float rod is connected to an abutment plate, and the abutment plate abuts on the transition section.

[0013] By adopting the above technical solution, the floating rod floats up to make the abutment plate abut against the transition section. When the transition section has a tendency to shake, friction is also generated with the abutment plate, which can further improve the stability of the transition section.

[0014] Optionally, the conductor frame further includes a plurality of oblique rods, which are arranged at intervals along the length direction of the support column, and the inclination directions of two adjacent oblique rods are opposite. One end of the oblique rod is fixedly connected to the support column, and the other end of the oblique rod is rotatably mounted on the floating rod.

[0015] By adopting the above technical solution, the oblique rod support of the support column is installed on the floating rod, and multiple support columns are indirectly integrated through the floating rod. When the load on one support column is relatively large, the other support columns can also share the load.

[0016] Optionally, the float rod is a hollow structure, and a slider is slidably installed inside the float rod. The sliders are arranged at intervals along the length direction of the float rod. The rod wall of the float rod is provided with a through hole for the inclined rod to pass through. Multiple inclined rods of the support columns are located at the same height and are rotatably installed on the same slider.

[0017] By adopting the above technical solution, the inclined rod is rotatably installed on the slider. The slider immersed in seawater can also exert force on the inclined rod when subjected to buoyancy. If the external load on the support column is transferred to the inclined rod, part of the load on the inclined rod can offset the buoyancy.

[0018] Optionally, the inclined rod is rotatably connected to a latch, and the latch is slidably mounted on the slider.

[0019] By adopting the above technical solution, if the diagonal rod is subjected to a relatively strong external load, the rotating connection between the diagonal rod and the pin, the contact between the pin and the slider, and the diagonal rod located under the sea surface overcoming the buoyancy of the seawater can all reduce shock and dissipate energy to a certain extent.

[0020] Optionally, there is a floating column between two adjacent sliders, and both ends of the floating column are respectively in contact with the sliders.

[0021] By adopting the above technical solution, multiple floating columns are located inside the floating rod, some of the floating rods are located on the sea surface, and some of the floating rods are located below the sea surface. The buoyancy of the floating columns and sliders located below the sea surface can be transmitted to the floating columns and sliders on the sea surface, so that the inclined rods on the entire support column can be subjected to upward buoyancy.

[0022] Optionally, the floating member is located between two adjacent oblique rods in the axial direction of the support column, and the floating member includes a plurality of floating plates, which are circumferentially distributed around the floating rod, and a connecting member is connected between two adjacent floating plates of the same floating member.

[0023] By adopting the above technical solution, the two adjacent inclined rods in the axial direction of the support column can limit the floating part, so that the floating part can be stably installed on the floating rod. The floating part includes multiple floating plates, which are connected by connecting parts. When the waves hit the floating part, the floating plates can float up and down.

[0024] Optionally, the connecting member is a connecting net.

[0025] By adopting the above technical solution, when the waves hit the floating member, the connecting net can also play a role in breaking the waves.

[0026] Optionally, a third shock-absorbing mechanism is also included, wherein the lower end of the support column is connected to a fixed pile, and a third shock-absorbing mechanism is installed between the support column and the fixed pile. The third shock-absorbing mechanism includes a connecting pipe and a first flange installed on both ends of the connecting pipe, a second flange is installed on the support column and the fixed pile, a bolt is installed between the first flange and the second flange, and the first flange and the second flange are provided with a through hole, and the inner diameter of the through hole is larger than the outer diameter of the bolt.

[0027] By adopting the above technical solution, since the inner diameter of the through hole is larger than the outer diameter of the bolt, the first flange and the second flange can be offset from each other, so the third shock-absorbing mechanism enables the lower end of the support column to receive loads transmitted from multiple directions, and relative displacement can occur between the first flange and the second flange, thereby achieving the effect of energy dissipation and shock absorption.

[0028] In a second aspect, the present application provides a construction method for a shock absorbing device for offshore wind power, which adopts the following technical solution:

[0029] The above-mentioned shock-absorbing device for offshore wind power is used for construction. The steel ball of the first shock-absorbing mechanism is rotatably installed on the transition section, and then the mounting plate is fixedly installed on the support column. The steel ball is installed on the vertical rod, so that relative offset can occur between the transition section and the jacket.

[0030] By adopting the above technical solution, both the transition section and the jacket can receive loads transmitted from multiple directions, and a relative offset occurs between the transition section and the jacket to achieve the effect of energy dissipation and shock absorption, thereby improving the stability of the transition section installed on the jacket.

[0031] In summary, this application has at least one of the following beneficial effects:

[0032] 1. When the jacket or transition section is subjected to external loads from all directions, the friction between the steel balls and the vertical rods can effectively dissipate energy and reduce shock, thereby improving the stability of the transition section when installed on the jacket. The provision of the first groove can also enable the transition section to automatically reset after shaking;

[0033] 2. The float rod can indirectly integrate multiple support rods into one, and the multiple support rods are mutually constrained by the float rod. The float rod can also play a certain corrective role on the multiple support rods, so that the jacket can stably support the transition section;

[0034] 3. The slide is subjected to the buoyancy of seawater and floats up and down inside the floating rod. The support rod is rotatably connected to the slide through the diagonal rod. The upward buoyancy of the slide can be transmitted to the diagonal rod, which can at least offset part of the vibration on the diagonal rod. The slide can also dissipate energy and reduce vibration on the conductor frame.

[0035] 4. The pin of the inclined rod is slidably connected to the slider. The inclined rod can not only be rotatably mounted on the slider, but also slide on the slider, so that the slider can better adapt to the force transmitted by the inclined rod, and the slider can also better eliminate the force transmitted by the inclined rod;

[0036] 5. Although part of the floating rod is exposed on the sea surface so that part of the slider is not in contact with the seawater, the sliders are connected by floating columns. The buoyancy can be transferred upward through the floating columns to the sliders that are not in contact with the seawater. Therefore, all the sliders have buoyancy and can exert force on the diagonal rod;

[0037] 6. The third shock-absorbing mechanism is installed between the support column and the fixed pile. The relative displacement between the first flange and the second flange enables the lower end of the support column to receive loads transmitted from multiple directions. The upper end of the support column can also receive loads transmitted from multiple directions on the transition section through the first shock-absorbing mechanism. Therefore, the direction in which the entire support column bears loads in the horizontal position is not restricted. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0039] Figure 2 is a cross-sectional view of a first shock absorbing mechanism according to an embodiment of the present application;

[0040] Figure 3 This is a schematic diagram of the structure of an embodiment of the present application in which vertical rods are distributed on a mounting plate;

[0041] Figure 4 is a cross-sectional view of the overall structure of an embodiment of the present application;

[0042] Figure 5 This is a schematic diagram of the structure of the embodiment of the present application showing the connection between the inclined rod and the slider;

[0043] Figure 6 This is a cross-sectional view of an embodiment of the present application showing a floating member installed on a floating rod;

[0044] Figure 7 yes Figure 4 A magnified schematic diagram of .

[0045] Explanation of the accompanying drawings: 1. Transition section; 11. Accommodating groove; 12. Limiting ring; 2. Conductor frame; 21. Support column; 22. Diagonal rod; 3. First shock-absorbing mechanism; 31. Mounting plate; 32. Vertical rod; 321. First vertical rod; 3211. First groove; 322. Second vertical rod; 3221. Second groove; 33. Steel ball; 4. Second shock-absorbing mechanism; 41. Floating rod; 411. Abutment plate; 42. Floating part; 421. Floating plate; 422. Connecting net; 5. Slider; 51. Missing groove; 52. Slide; 6. Pin; 7. Floating column; 8. Third shock-absorbing mechanism; 81. Connecting pipe; 82. First flange; 9. Fixed pile; 10. Second flange. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-7 This application is described in further detail.

[0047] The embodiment of the present application discloses a shock absorbing device for offshore wind power. Figure 1 and Figure 2 A shock absorption device for offshore wind power includes a first shock absorption mechanism 3 installed between a transition section 1 and a jacket 2. The first shock absorption mechanism 3 includes a mounting plate 31 and a vertical rod 32 installed on the mounting plate 31. The mounting plate 31 corresponds to the support column 21 of the jacket 2 one by one, and the mounting plate 31 is fixedly installed on the upper end of the support column 21.

[0048] Reference Figure 2 and Figure 3 The vertical rod 32 includes a first vertical rod 321 and a second vertical rod 322. The first vertical rod 321 is fixedly mounted at the center of the mounting plate 31, and the second vertical rod 322 is fixedly mounted on the mounting plate 31 at intervals around the first vertical rod 321. The first shock absorbing mechanism 3 also includes a steel ball 33, which is rotatably mounted on the mounting plate 31, with a portion of the steel ball 33 extending outside the mounting plate 31. The steel balls 33 correspond one-to-one with the vertical rods 32. The first vertical rod 321 is provided with a first groove 3211 for accommodating the steel balls 33. The inner diameter of the first groove 3211 gradually increases from the bottom wall to the notch. The portion of the steel ball 33 extending outside the mounting plate 31 is located within the first groove 3211, and a gap is left between the steel ball 33 and the inner wall of the first groove 3211. The second vertical rod 322 defines a second groove 3221 for accommodating the steel ball 33 . The inner diameter of the second groove 3221 is larger than the outer diameter of the steel ball 33 , and a gap is left between the steel ball 33 and the inner wall of the second groove 3221 .

[0049] When the earthquake on the seabed is transmitted to the jacket 2, the first vertical rod 321 and the second vertical rod 322 form friction with the steel ball 33. The steel ball 33 needs to overcome gravity and slide along the inner wall of the first groove 3211 in the first groove 3211, which can increase the friction between the steel ball 33 and the first vertical rod 321 and improve the shock absorption effect. When the earthquake stops, under the action of gravity, the steel ball 33 returns to the bottom of the first groove 3211, and the transition section 1 can automatically reset.

[0050] Reference Figure 4 A shock absorbing device for offshore wind power also includes a second shock absorbing mechanism 4, which includes a float rod 41 and a floating member 42 installed on the float rod 41. The lower end of the float rod 41 is immersed in the seabed, and the upper end of the float rod 41 is connected to an abutment plate 411. The transition section 1 is provided with a receiving groove 11 for accommodating the abutment plate 411. The cross-section of the abutment plate 411 is also a circular structure, and the abutment plate 411 and the float rod 41 are coaxially arranged. The outer diameter of the abutment plate 411 is larger than the diameter of the float rod 41, and the inner wall of the receiving groove 11 is installed with a limit ring 12 for limiting the detachment of the abutment plate 411. When the float rod 41 is installed on the transition section 1, the abutment plate 411 abuts on the transition section 1, and a plurality of mounting plates 31 are circumferentially arranged with the float rod 41 as the center. The transition section 1 is exposed to the sea, and wind loads from all directions act on the transition section 1 . The transition section 1 reduces vibration and dissipates energy through the friction between the steel ball 33 and the vertical rod 32 , and the friction between the transition section 1 and the abutment plate 411 .

[0051] The jacket 2 also includes a plurality of diagonal rods 22, spaced apart along the length of the support column 21. Adjacent diagonal rods 22 in the axial direction of the support column 21 have opposite inclinations. One end of each diagonal rod 22 is fixedly connected to the support column 21, while the other end is pivotally mounted on a floating rod 41. The floating rod 41 is a hollow structure, and a slider 5 is slidably mounted within the floating rod 41. The sliders 5 are spaced apart along the length of the floating rod 41. When the sliders 5 are below sea level, they are buoyed by the buoyancy of the seawater. The wall of the floating rod 41 is provided with perforations for the diagonal rods 22 to pass through, with each perforation corresponding to a diagonal rod 22.

[0052] Reference Figure 4 and Figure 5 Multiple support columns 21 are located at the same height, and the inclined rods 22 are rotatably mounted on the same slider 5 through perforations. The inclined rods 22 are rotatably connected to the latch 6, which is slidably mounted on the slider 5. The slider 5 has a notch 51 for the inclined rod 22 to extend into, and the slider 5 has a sliding groove 52 on the inner wall of the notch 51 for the latch 6 to slide. When the inclined rod 22 is mounted on the slider 5, it is located within the notch 51, and the ends of the latch 6 slide within the sliding grooves 52. If one of the support columns 21 receives a strong load from the seabed, the load is transferred to the inclined rod 22, and the load is partially dissipated through the rotational connection between the inclined rod 22 and the slider 5 and the sliding contact between the latch 6 and the slider 5.

[0053] Reference Figure 4 A floating column 7 is located between two adjacent sliders 5, with both ends of the floating column 7 abutting against the sliders 5. The sliders 5 have a circular cross-section and a positioning slot at their center. A fixing rod is integrally formed at the end of the floating column 7, which is inserted into the positioning slot, ensuring a stable installation of the floating column 7 between the two sliders 5.

[0054] The jacket 2 near the transition section 1 is exposed above the sea level like the transition section 1 . The buoyancy of the floating columns 7 below the sea level is transmitted to the sliders 5 above the sea level through other floating columns 7 . All sliders 5 exert an upward force on all diagonal rods 22 .

[0055] Reference Figure 1 Multiple floating members 42 are spaced apart along the axial direction of the float rod 41, with one floating member 42 positioned between two adjacent diagonal rods 22 in the axial direction of the support column 21. The floating member 42 includes a plurality of floating plates 421, which are distributed circumferentially around the float rod 41. Connectors connect adjacent floating plates 421 of the same floating member 42.

[0056] Reference Figure 6 The number of diagonal rods 22 around the buoy 41 corresponds to the number of floating plates 421. In this embodiment, there are three diagonal rods 22 around the buoy 41, so there are three floating plates 421 distributed around the buoy 41. These floating plates 421 are curved, with the arcs facing the buoy 41. The connecting member is a connecting net 422, which connects adjacent floating plates 421. When waves strike the buoy 41, the connecting net 422 and the perforations on the buoy 41 act as wave breakers.

[0057] Reference Figure 7 A shock absorbing device for offshore wind power also includes a third shock absorbing mechanism 8, which is installed between the support column 21 and the fixed pile 9. The third shock absorbing mechanism 8 includes a connecting pipe 81 and a first flange 82 installed on both ends of the connecting pipe 81, and the connecting pipe 81 is made of steel structure material. A second flange 10 is installed on the support column 21 and the fixed pile 9, and bolts are connected between the first flange 82 and the second flange 10. The inner diameter of the through hole on the first flange 82 and the second flange 10 is larger than the inner diameter of the bolt, and the bolt passes through the through hole and is fixedly connected to the nut. Since the inner diameter of the through hole is larger than the inner diameter of the bolt, when the load comes, the first flange 82 and the second flange 10 can be relatively offset in any direction, and the energy is dissipated through friction between the first flange 82 and the second flange 10.

[0058] It should be noted that one of the support columns 21 needs to be equipped with a steel ladder for people to enter the transition section 1. In this embodiment, the steel ladder installed on the support column 21 near the transition section 1 is not fixedly connected to the transition section 1, but is only close to the transition section 1, allowing people to enter the transition section 1 via the steel ladder.

[0059] The implementation principle of a shock absorption device for offshore wind power in the embodiment of the present application is as follows:

[0060] When the offshore wind turbine is installed at sea, the first shock absorbing mechanism 3, the second shock absorbing mechanism 4 and the third shock absorbing mechanism 8 can all play the role of energy dissipation and shock reduction for the offshore wind turbine. If the load is transmitted from the seabed to the transition section 1, the first flange 82 and the second flange 10 can be relatively offset in any direction, and the friction between the first flange 82 and the second flange 10 plays a preliminary role of energy dissipation and shock reduction.

[0061] If the external load on only one support column 21 is relatively strong, when the load on the support column 21 is transferred to the diagonal rod 22, the diagonal rod 22 can transfer the load to the slider 5, and the upward force of the floating column 7 and the floating part 42 can offset part of the load. Therefore, the other support columns 21 can restrain the support column 21 with strong vibration through the second shock-absorbing mechanism 4, so that the vibration felt by the support column 21 with strong vibration is evenly distributed; when the load on the support column 21 is transferred to the transition section 1, the friction between the steel ball 33 of the first shock-absorbing mechanism 3 and the vertical rod 32 further offsets part of the load, so that the transition section 1 can be stably installed on the conductor frame 2.

[0062] Wind loads from all directions at sea act on the transition section 1 and the jacket 2 exposed to the seawater. The friction between the transition section 1 and the abutment plate 411, as well as the friction between the steel ball 33 and the vertical rod 32, can offset part of the wind load. The support column 21 can also offset part of the wind force through the connection between the inclined rod 22 and the floating rod 41, so that the buoyancy of the water can also offset part of the wind force. Therefore, the transition section 1 can be stably installed on the jacket 2.

[0063] A construction method for a shock absorbing device for offshore wind power is disclosed. The above-mentioned shock absorbing device for offshore wind power is used for construction. The steel ball 33 of the first shock absorbing mechanism 3 is rotatably installed on the transition section 1. The mounting plate 31 is then fixedly installed on the support column 21. The steel ball 33 is installed on the vertical rod 32, so that relative offset can occur between the transition section 1 and the jacket 2.

[0064] When the transition section 1 or the jacket 2 is subjected to a load, the relative displacement of the steel balls 33 between the transition section 1 and the jacket 2 achieves the effect of energy dissipation and shock absorption, and the transition section 1 can withstand wind loads from all directions. The multiple support columns 21 are independent of each other, and the support columns 21 indirectly form a whole through the floating rod 41. If one of the support rods is subjected to a strong load, the other support rods can also share and constrain it.

[0065] In one embodiment, a shock absorbing device for offshore wind power further includes a second shock absorbing mechanism 4, and a floating rod 41 of the second shock absorbing mechanism 4 is installed on the transition section 1. The transition section 1 and the abutment plate 411 of the floating rod 41 are abutted against each other. When the transition section 1 is subjected to a load, the friction between the transition section 1 and the abutment plate 411 can also play the role of energy dissipation and shock reduction. The inclined rod 22 on the support column 21 is installed on the floating rod 41. The load received by the inclined rod 22 can be partially offset by the upward buoyancy of the slide plate. The second shock absorbing mechanism 4 can also play the role of shock absorption and energy dissipation on the conductor frame 2 and the transition section 1.

[0066] In one embodiment, a vibration reduction device for offshore wind power generation further includes a third vibration reduction mechanism 8, which is installed between the support column 21 and the fixed pile 9. The first flange 82 and the second flange 10 of the third vibration reduction mechanism 8 are offset relative to each other to achieve energy dissipation and vibration reduction. The loads transmitted from the seabed to the fixed pile 9 are partially offset by the third vibration reduction mechanism 8.

[0067] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A shock absorption device for offshore wind power, characterized by: The invention comprises a first shock absorbing mechanism (3) installed between a transition section (1) and a jacket (2), wherein the first shock absorbing mechanism (3) comprises a mounting plate (31) and a vertical rod (32) installed on the mounting plate (31), wherein the mounting plate (31) corresponds to a support column (21) of the jacket (2) on a one-to-one basis, and wherein the vertical rod (32) comprises a first vertical rod (321) and a second vertical rod (322), wherein the first vertical rod (321) is located at a central position of the mounting plate (31), and a plurality of second vertical rods (322) are arranged at intervals in a circumferential direction with the first vertical rod (321) as the center. It also includes a plurality of steel balls (33), the steel balls (33) are rotatably mounted on the mounting plate (31), the steel balls (33) correspond to the vertical rods (32) one by one, and the steel balls (33) are partially exposed outside the mounting plate (31), the first vertical rod (321) is provided with a first groove (3211) for accommodating the steel balls (33), and the inner diameter of the first groove (3211) gradually increases from the bottom to the notch, and the second vertical rod (322) is provided with a second groove (3221) for accommodating the steel balls (33), and the inner diameter of the second groove (3221) is larger than the outer diameter of the steel balls (33); The second shock absorbing mechanism (4) includes a floating rod (41) and a floating member (42) mounted on the floating rod (41); the mounting plate (31) is circumferentially arranged with the floating rod (41) as the center; the upper end of the floating rod (41) is connected to an abutment plate (411), and the abutment plate (411) abuts against the transition section (1); The jacket (2) further comprises a plurality of inclined rods (22), the inclined rods (22) being arranged at intervals along the length direction of the support column (21), the inclined directions of two adjacent inclined rods (22) being opposite, one end of the inclined rod (22) being fixedly connected to the support column (21), and the other end of the inclined rod (22) being rotatably mounted on the floating rod (41); The floating rod (41) is a hollow structure. A slider (5) is slidably installed in the floating rod (41). The sliders (5) are arranged at intervals along the length direction of the floating rod (41). The rod wall of the floating rod (41) is provided with a through hole for the inclined rod (22) to pass through. The inclined rods (22) of multiple support columns (21) located at the same height are rotatably installed on the same slider (5).

2. A shock absorption device for offshore wind power according to claim 1, characterized in that: The inclined rod (22) is rotatably connected to a latch (6), and the latch (6) is slidably mounted on the slider (5).

3. A shock absorption device for offshore wind power according to claim 2, characterized in that: A floating column (7) is provided between two adjacent sliders (5), and both ends of the floating column (7) are respectively in contact with the sliders (5).

4. The shock absorption device for offshore wind power according to claim 1, characterized in that: The floating member (42) is located between two adjacent oblique rods (22) in the axial direction of the support column (21). The floating member (42) includes a plurality of floating plates (421). The plurality of floating plates (421) are circumferentially distributed with the floating rod (41) as the center. A connecting member is connected between two adjacent floating plates (421) in the same floating member (42).

5. The shock absorption device for offshore wind power according to claim 4, characterized in that: The connecting member is a connecting net (422).

6. The shock absorption device for offshore wind power according to claim 1, characterized in that: The invention also includes a third shock absorbing mechanism (8), wherein the lower end of the support column (21) is connected to a fixing pile (9), and the third shock absorbing mechanism (8) is installed between the support column (21) and the fixing pile (9), and the third shock absorbing mechanism (8) includes a connecting pipe (81) and a first flange (82) installed on both ends of the connecting pipe (81), and a second flange (10) is installed on the support column (21) and the fixing pile (9), and a bolt is installed between the first flange (82) and the second flange (10), and the first flange (82) and the second flange (10) are provided with a through hole, and the inner diameter of the through hole is larger than the outer diameter of the bolt.

7. A construction method for a shock absorbing device for offshore wind power, characterized in that: A shock absorbing device for offshore wind power according to claim 1 is used for construction, wherein the steel ball (33) of the first shock absorbing mechanism (3) is rotatably mounted on the transition section (1), and then the mounting plate (31) is fixedly mounted on the support column (21), and the steel ball (33) is mounted on the vertical rod (32), so that a relative offset can occur between the transition section (1) and the conductor frame (2).

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