Wind power tower bottom damping device and damping method thereof

Abstract

The invention relates to a wind power tower drum bottom damping device and a damping method thereof, and relates to the technical field of wind power tower drums, the wind power tower drum bottom damping device comprises a wind power tower drum body, a damping assembly, a force decomposition frame and a buffer seat assembly, and the damping assembly comprises a fixed drum, a plurality of groups of pressure adjusting devices between the fixed drum and the tower drum body and a plurality of groups of buffer devices; when the wind power tower tube is impacted by pressure, one part of pressure is transmitted to the fixed tube end, one part of pressure penetrates through the fixed tube upper plate to extend to the lower portion of the tower tube, the pressure adjusting device buffers and absorbs the pressure of the fixed tube end, the pressure of the lower portion of the tower tube is buffered through the buffer device, and the pressure not released by the buffer device is transmitted into the buffer seat assembly through the tower tube. The pressure on the fixing cylinder is transmitted into the buffer seat assembly, the pressure is further released through the buffer seat assembly, the pressure on the tower cylinder is released through multiple damping, damage to the tower cylinder caused by strong pressure is avoided, the working stability and safety and the working efficiency are improved, and the working cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power towers, and in particular to a wind power tower bottom shock absorbing device and a shock absorbing method thereof. Background Art

[0002] With the development of wind power projects, the requirements for the construction of wind power stations are becoming higher and higher. As the supporting component of the wind turbine generator set, the anti-vibration ability of the wind turbine tower also needs to be greatly improved, which will directly affect the service life of the wind turbine generator set and the safety and stability of its operation.

[0003] For example, a wind turbine tower reinforcement device disclosed in publication number CN116624339A fixes the wind turbine tower by means of a plurality of barrel shock-absorbing assemblies arranged at intervals along the axial direction of the tower and a bottom reinforcement assembly arranged at the bottom of the tower. The barrel reinforcement assembly adopts a combination of an inner reinforcement ring, an outer reinforcement ring and a damping vibration absorber, and utilizes the elastic characteristics of the damper to realize energy dissipation of the inner reinforcement ring and the outer reinforcement ring on the upper part of the wind turbine tower, while the bottom of the wind turbine tower adopts concrete to resist the impact of external forces on the wind turbine tower, thereby realizing all-round protection of the wind turbine tower.

[0004] However, due to long-term use, the bottom of the tower will be subjected to more impacts from the harsh environment, and concrete is relatively rigid, so it can only absorb external force forcibly. If this continues for a long time, it will easily lead to problems such as poor bearing capacity of the bottom of the tower, unstable tower foundation tilting, and tower bottom fracture. Therefore, it is necessary to further reinforce the bottom of the wind turbine tower to achieve the overall stability of the wind turbine tower operation. Summary of the invention

[0005] Purpose of the invention: The present invention provides a wind turbine tower bottom shock absorbing device, and further provides a shock absorbing method based on the shock absorbing device to solve the above problems existing in the prior art.

[0006] Technical solution: A shock absorbing device at the bottom of a wind turbine tower, comprising a wind turbine tower body, a shock absorbing assembly and a force decomposition frame; wherein concrete is arranged along the circumference of the bottom of the wind turbine tower body, an inner cylinder is sleeved around the concrete, and the shock absorbing assembly is arranged at the bottom of the wind turbine tower body, comprising a fixed cylinder sleeved at the bottom of the wind turbine tower body, a chamber is formed between the inner wall of the fixed cylinder and the outer wall of the inner cylinder, a pressure regulating device is arranged in the chamber, and the pressure regulating device is arranged in a plurality of groups along the circumference of the wind turbine tower body, for adjusting the pressure transmitted by the wind turbine tower body; a force decomposition frame is erected between the fixed cylinder and the base surface, and is arranged in a plurality of groups along the circumference of the fixed cylinder, for decomposing external forces, and an outer cylinder is arranged around the force decomposition frame; when external forces act on the wind turbine tower body, the shock absorbing assembly is arranged at the bottom of the wind turbine tower body, and ... When pressure is generated on the wind turbine tower body, the pressure on it will be transmitted to the bottom of the tower through the upper part of the wind turbine tower body. Part of the pressure is transmitted to the base surface through the force decomposition frame, and part of the pressure is transmitted to the pressure regulating device through the fixed cylinder of the shock absorbing assembly. Then the pressure regulating device buffers the pressure thereon, thereby realizing the force decomposition of the axial direction of the wind turbine tower body. The other part of the force is transmitted to the force decomposition frame through the outer cylinder, thereby realizing the circumferential decomposition of the external force, thereby realizing the fixation of the bottom of the wind turbine tower, avoiding the impact of strong winds or heavy rains on the wind turbine tower, resulting in the problem of instability of the bottom causing tilting and fracture, thereby improving the stability of the wind turbine tower, greatly improving the safety and service life of the wind turbine generator set, further saving work costs and improving work efficiency.

[0007] In a further embodiment, the shock absorbing assembly also includes a buffer device, one side of the buffer device is connected to the outer wall of the inner cylinder, and the other side is connected to the inner wall of the fixed cylinder, and is arranged along the circumferential array of the wind turbine tower and alternately with the pressure regulating device, for buffering the pressure transmitted by the wind turbine tower body; if a strong external force is encountered, part of the pressure will be transmitted to the bottom of the wind turbine tower through the fixed cylinder. At this time, the buffer device receives the axial force of the wind turbine tower and buffers it, thereby further improving the stability and reliability of the wind turbine tower, greatly improving work efficiency, and saving work costs.

[0008] In a further embodiment, the pressure regulating device includes a support frame arranged on one side of the fixed cylinder, an energy absorbing mechanism connected to the support frame for absorbing pressure, a toothed structure arranged near one side of the energy absorbing mechanism, connected to the energy absorbing mechanism, and used to transmit pressure to a connecting rod of the energy absorbing mechanism, a connecting plate away from the support frame and arranged on the other side of the fixed cylinder, and a first elastic member sleeved on the connecting rod and arranged between the connecting plate and the support frame for buffering the pressure on the wind turbine tower body; when the pressure is transmitted to the bottom fixed assembly through the upper part of the tower, the pressure will generate a downward pressure on the upper plate of the fixed cylinder, thereby causing the upper plate of the fixed cylinder to press the connecting rod downward, the connecting rod moves downward, and the first elastic member sleeved thereon buffers it, and at this time, the connecting rod moves downward while driving the energy absorbing mechanism connected thereto to move, further absorbing the pressure on the connecting rod, thereby fully releasing the pressure on the wind turbine tower, further improving the stability of the work and its service life, and greatly saving the cost of the work.

[0009] In a further embodiment, the buffer device includes a sleeve arranged in a chamber formed between the inner wall of the fixed cylinder and the outer wall of the inner cylinder, a movable shaft connected to the wind turbine tower body at one end and arranged in the sleeve at the other end, and moving axially along the sleeve, a support member connected to the fixed cylinder at one end and arranged in the sleeve at the other end, and connected with the connecting shaft with a clearance fit, and at least two groups of stop plates respectively sleeved on the movable shaft and the support member and located in the sleeve, and a second elastic member arranged between the two groups of stop plates and sleeved on the movable shaft and the support member, for buffering the pressure on the wind turbine tower body. When the wind is strong, part of the pressure on the upper part of the wind turbine tower is released through the pressure regulating device, and the other part will extend to the bottom of the wind turbine tower. The pressure will pass through several groups of buffer devices during the extension process. At this time, the movable shaft connected to the tower will move outward along the sleeve under the pressure. At this time, the second elastic member buffers the force on it, and the movable shaft continues to move toward the support member. The other part of the force is transmitted to the outer wall of the fixed cylinder through the support member, and then released to the base surface, thereby further releasing the pressure, further improving the working stability of the wind turbine tower body, achieving further shock absorption efficiency of the wind turbine tower, and saving work costs.

[0010] In a further embodiment, the energy absorption mechanism includes a motor arranged on one side of the support frame, a first bevel tooth connected to the motor, and a rotating shaft that passes through the support frame and is arranged at a preset distance from the first bevel tooth, a spur tooth sleeved on the connecting shaft, one end of which is arranged at a preset distance from the bevel tooth and the other end is meshed with the toothed structure on the connecting rod, and a second bevel tooth assembly sleeved on the rotating shaft, symmetrically arranged with the spur tooth, and meshed with the first bevel tooth for absorbing the pressure on the connecting rod and transmitting it to the motor; when the connecting rod moves downward, it drives the spur tooth meshed with it to rotate, the rotation of the spur tooth drives the rotating shaft connected to it to rotate, and the rotation of the rotating shaft drives The second bevel gear assembly connected thereto rotates, and the second bevel gear assembly drives the first bevel gear meshing therewith to rotate, and the rotation of the first bevel gear drives the motor to rotate, thereby absorbing the pressure on the connecting rod. If the pressure value on the wind turbine tower body is less than the preset value at this time, the motor drives the first bevel gear to reverse, and the first bevel gear drives the second bevel gear assembly meshing therewith to reverse, and the second bevel gear assembly drives the rotating shaft to reverse, and the rotating shaft drives the spur gear to reverse, and the spur gear drives the connecting rod to move upward, thereby resetting the connecting rod, and repeating the above-mentioned buffering and energy absorption of pressure when the pressure is received again, thereby further improving the flexibility of the use of the pressure regulating device, greatly improving the working stability and the service life of the wind turbine tower.

[0011] In a further embodiment, a through groove is provided on the top surface of the fixed cylinder, and one end of the connecting rod away from the support frame extends through the through groove to a preset distance from the top surface of the fixed cylinder, and a sliding block is provided at the extended end of the connecting rod, and a guide groove matching the sliding block is provided on the fixed cylinder, which is used to buffer the force received by the connecting rod; the connecting rod and the fixed cylinder are movably connected, so that the pressure impacting the fixed cylinder can be buffered to a certain extent, avoiding the problem of fracture easily caused by rigid connection, further improving the flexibility of work, and improving the service life of the shock absorbing assembly.

[0012] In a further embodiment, the shock absorbing assembly also includes a buffer seat assembly arranged between the fixed cylinder and the base surface, which is used to buffer the pressure generated by the shock absorbing assembly on the base surface; the design of the buffer seat further releases the pressure on the wind turbine tower body and the shock absorbing assembly, thereby further improving the stability of the wind turbine tower.

[0013] In a further embodiment, the buffer seat assembly includes a base arranged on one side of the fixed cylinder, a bottom plate arranged on the base surface at a preset distance from the base, a support shaft arranged between the base and the bottom plate for supporting the base, and a connecting rod arranged in an array circumferentially along the base for receiving pressure on the base and transmitting it to the base surface; the pressure on the shock absorbing assembly and the tower is transmitted to the connecting rod and the support shaft through the base, and then transmitted to the base surface. The connecting rod is connected in a rotating manner to avoid the problem of breakage caused by rigid connection when the impact force is large, further release the pressure, achieve further shock absorption of the wind turbine tower body, and further improve work safety.

[0014] In a further embodiment, the buffer seat assembly also includes a three-dimensional third elastic member that is sleeved on the support shaft and located between the bottom plate and the base, and is used to buffer the pressure on the base; the setting of the third elastic member further buffers the force on the support shaft, further improves the service life of the buffer seat assembly, and greatly improves the stability and safety of the operation.

[0015] A shock absorption method based on a shock absorption device at the bottom of a wind power tower comprises the following steps: S1, the wind turbine tower body is subjected to external force and the force is transmitted to the top surface of the fixed cylinder of the shock absorbing assembly. The top surface is subjected to force to squeeze the pressure regulating device, and the connecting rod moves downward, driving the spur gear on the energy absorbing mechanism to rotate, the spur gear drives the rotating shaft to rotate, the rotating shaft drives the second bevel gear assembly to rotate, and the second bevel gear assembly drives the first bevel gear to rotate until the pressure is transmitted to the motor, the motor absorbs the pressure, and the axial force of the wind turbine tower body (1) is decomposed. The other part of the force is transmitted to the force decomposition frame through the outer cylinder, and the circumferential force of the wind turbine tower body (1) is decomposed through the force decomposition frame, and then enters S2; S2, the buffer device also receives the pressure transmitted by the wind turbine tower, the movable shaft receives the circumferential pressure of the wind turbine tower and moves towards the support member, generating a certain impact force on the support member, at this time, the second elastic member buffers the pressure on it, and transmits it to the base surface through the fixed cylinder and the force decomposition frame, and then enters S3; S3. At this time, if the pressure on the wind turbine tower body is less than the preset value, the motor reverses by absorbing the pressure, driving the first bevel gear to rotate, the first bevel gear drives the second bevel gear assembly to rotate, the second bevel gear assembly drives the rotating shaft to reverse, the rotating shaft drives the spur gear to reverse, the spur gear drives the connecting rod to move upward, and the pressure regulating device is reset; if the pressure on the wind turbine tower body is greater than the preset value, enter S4; S4, the base of the buffer seat assembly receives the pressure on the fixed cylinder of the shock absorbing assembly and transmits it to the supporting shaft, and buffers it through the third elastic member. At the same time, the connecting rod also receives the pressure and rotates at a preset angle and transmits it to the base surface, thereby releasing the pressure on the wind turbine tower body; S5, and so on, repeating steps S1 to S4 in sequence until the pressure on the wind turbine tower body is less than a preset value.

[0016] Beneficial effect: The present invention provides a shock absorbing device at the bottom of a wind turbine tower and a shock absorbing method thereof, comprising a wind turbine tower body, a shock absorbing assembly, a force decomposition frame and a buffer seat assembly. The shock absorbing assembly comprises a fixed cylinder sleeved at the bottom of the wind turbine tower body, a plurality of groups of pressure regulating devices arranged between the fixed cylinder and the inner cylinder, and a plurality of groups of buffer devices arranged crosswise with the pressure regulating devices. When the wind turbine tower is subjected to pressure impact, part of the pressure is transmitted to the fixed cylinder end, and part of the pressure passes through the upper plate of the fixed cylinder and extends to the lower part of the tower. The pressure at the fixed cylinder end is buffered and absorbed by the pressure regulating device, and the pressure at the lower part of the tower is buffered by the buffer device. Further The pressure not released by the buffer device is transmitted to the buffer seat assembly through the tower, and the pressure on the fixed cylinder is transmitted to the buffer seat assembly. The pressure is further released by the buffer seat assembly, thereby realizing the decomposition of the axial force of the wind turbine tower body (1). The other part of the force is transmitted to the force decomposition frame through the outer cylinder, and the circumferential force of the wind turbine tower body (1) is decomposed by the force decomposition frame. The pressure on the tower is released through multiple buffers, thereby reducing the damage to the tower caused by strong pressure, solving the problem that the pressure cannot be released by using concrete alone, further improving the stability and safety of the work, greatly improving the work efficiency, and saving the work cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structural assembly of the present invention.

[0018] Figure 2 It is a schematic diagram of the connection structure between the tower body, the fixing tube, the shock absorbing assembly and the force decomposition frame of the present invention.

[0019] Figure 3 It is a schematic diagram of the connection structure of the pressure regulating device, the buffer device, the concrete and the inner tube of the present invention.

[0020] Figure 4 It is a schematic diagram of the positional relationship between the pressure regulating device and the buffer device of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the pressure regulating device of the present invention.

[0022] Figure 6 It is a schematic diagram of the connection structure between the energy absorption mechanism and the connecting rod of the present invention.

[0023] Figure 7 It is a schematic diagram of the cross-sectional structure of the buffer device of the present invention.

[0024] Figure 8 It is a schematic diagram of the connection structure between the buffer device and the tower body of the present invention.

[0025] Fig. 9 It is a schematic diagram of the connection structure between the buffer device and the fixed cylinder of the present invention.

[0026] Fig.10 It is a schematic diagram of the connection structure between the top plate of the fixed cylinder and the top of the connecting rod of the present invention.

[0027] Fig.11 It is a schematic diagram of the top structure of the connecting rod of the present invention.

[0028] Fig.12 It is a schematic diagram of the cross-sectional structure of the connection between the top of the connecting rod and the top plate of the fixed cylinder of the present invention.

[0029] Fig.13 It is a schematic structural diagram of the buffer seat assembly of the present invention.

[0030] The reference numerals in the figure are: wind turbine tower body 1, force decomposition frame 2, buffer seat assembly 3, bottom plate 3a, support seat 3b, rotating rod 3c, support shaft 3d, third spring 3e, base 3f, support plate 3g, fixed plate 4, shock absorbing assembly 5, pressure regulating device 5a, support frame 51a, motor 52a, gear assembly 53a, first bevel gear 531a, second bevel gear assembly 532a, straight gear 533a, rotating shaft 534a, connecting rod 54a, first spring 55a, connecting plate 56a, sliding block 57a, buffer device 5b, movable shaft 51b, support member 52b, sleeve 53b, second spring 54b, stop plate 55b, fixed cylinder 5c, upper plate 51c, upper plate through groove 511c, inner cylinder 6, concrete 7, outer cylinder 8. DETAILED DESCRIPTION

[0031] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0032] The applicant believes that the stability of the bottom of the wind turbine tower body directly affects the performance of the entire wind turbine tower. At present, the bottom of the tower is mostly stabilized by concrete to resist external pressure. However, concrete is very rigid and is easily cracked when subjected to external force and bad weather for a long time, which in turn affects the tower tilt, the bottom of the tower and other disadvantages, thereby reducing the service life of the tower and increasing work costs.

[0033] To this end, the applicant has designed a shock-absorbing device and a shock-absorbing method for the bottom of a wind turbine tower, by sleeved a fixed cylinder at the bottom of the wind turbine tower, and arranging a plurality of groups of pressure regulating devices and buffer devices in a circular array between the fixed cylinder and the tower to buffer and release the pressure on the tower, and arranging a buffer seat assembly at the bottom of the fixed cylinder to further buffer the pressure on the fixed cylinder and the tower. This multiple shock-absorbing design further improves the stability of the tower installation, greatly improves the work efficiency and the service life of the tower, and further saves the work cost.

[0034] The present invention provides a wind power tower bottom shock absorbing device, such as Figures 1 to 8As shown, it includes three parts: a wind turbine tower body 1, a shock absorbing component 5 and a force decomposition frame 2. Concrete 7 of a preset height is fixed around the bottom of the wind turbine tower body 1. The bottom of the wind turbine tower body 1 is further reinforced by the concrete 7. An inner cylinder 6 is sleeved on the outer periphery of the concrete 7. Four groups of force decomposition frames 2 are arranged along the circumference of the shock absorbing component 5. An outer cylinder 8 is sleeved around the force decomposition frame. When the force on the outer cylinder 8 is transmitted to the force decomposition frame 2, the connecting rods of each group of force decomposition frames 2 rotate relatively to avoid the problem of easy breakage caused by rigid connection. The force decomposition frame 2 further reduces the shock of the wind turbine tower body 1, wherein the shock absorbing component 5 includes a sleeve on the wind A fixed tube 5c is provided at the bottom of the power tower body 1, and a chamber is formed between the fixed tube 5c and the inner tube 6. Four groups of pressure regulating devices 5a are arranged in a circumferential array in the annular chamber, and four buffer devices 5b are arranged alternately with the pressure regulating devices 5a between the inner tube 6 and the side wall of the fixed tube 5c. In this embodiment, multiple pressure regulating devices 5a and buffer devices 5b can also be provided according to actual conditions. The pressure regulating device 5a in this embodiment includes a support frame 51a provided on the bottom surface of the fixed tube 5c, and an energy absorbing mechanism is provided on one side of the support frame 51a. The energy absorbing mechanism in this embodiment includes a motor 52a and a gear assembly 53a. The gear assembly 53a is provided with a plurality of gears. The assembly 53a includes a first bevel gear 531a connected to the motor 52a, and a rotating shaft 534a which is at a preset distance from the first bevel gear 531a and is arranged on the support frame 51a and connected to the support frame 51a through a bearing. A straight tooth 533a is sleeved on the center of the rotating shaft 534a, and the straight tooth 533a is arranged at a preset distance from the first bevel gear 531a, and a second bevel gear assembly 532a which is sleeved on the rotating shaft 534a and is symmetrically arranged with the straight tooth 533a. The second bevel gear assembly 532a is meshed and connected with the first bevel gear 531a assembly. A connecting rod 5 is connected to one side of the straight tooth 533a of the energy absorption mechanism. 4a, the connecting rod 54a is located between the second bevel gear assembly 532a, wherein a tooth structure is provided at the connection between the connecting rod 54a and the straight tooth 533a, the tooth structure on the connecting rod 54a is meshed and connected with the straight tooth 533a, a connecting plate 56a is provided at the connection between the connecting rod 54a and the upper plate 51c of the fixed cylinder 5c, the connecting plate 56a is used to further support the connecting rod 54a, a baffle is also provided at the position where the connecting rod 54a and the supporting frame 51a face each other, a first spring 55a is sleeved on the connecting rod 54a and located between the baffle and the connecting plate 56a, and is used to buffer the pressure on the fixed cylinder 5c;The buffer device 5b includes a sleeve 53b arranged in the chamber, and a movable shaft 51b movably arranged at one end of the sleeve 53b and connected with the groove of the wind power tower body 1, and a support member 52b arranged at the other end of the sleeve 53b and connected with the groove of the side wall of the fixed cylinder 5c. The groove connection between the movable shaft and the tower body can also be connected by a bearing, and the groove connection between the support member and the fixed cylinder can also be connected by a bearing. On the one hand, the friction between the movable shaft and the support member on the tower body and the fixed cylinder is reduced. On the other hand, the bearing can further provide support for the movable shaft and the support member, further improving the service life of the movable shaft and the support member. The buffer device also includes stopper plates 55b respectively arranged at both ends of the sleeve 53b, and a second spring 54b is arranged between the two groups of stopper plates 55b and sleeved on the movable shaft 51b and the support member 52b. The end of the support member 52b close to the movable shaft 51b is provided with a groove matching the diameter of the movable shaft 51b, which is used to provide a preset space for the movement of the movable shaft 51b. ;

[0035] In actual use, the external force generates a certain pressure on the wind turbine tower body 1. When the upper part of the wind turbine tower body 1 is subjected to a greater force, the pressure will be transmitted to the bottom of the tower. After the connection between the wind turbine tower body 1 and the fixed cylinder 5c, that is, the upper plate 51c of the fixed cylinder 5c is subjected to pressure, a downward pressure will be generated on the fixed cylinder 5c. At this time, the connecting rod 54a connected to the fixed cylinder 5c will also be affected by the force and move downward. The first spring 55a sleeved on the connecting rod 54a buffers part of the pressure on the connecting rod 54a, and the other part of the pressure drives the spur gear 533a meshing with it to rotate as the connecting rod 54a moves downward. The rotation of the rotating shaft 534a connected thereto drives the rotating shaft 534a to rotate, and the rotation of the rotating shaft 534a drives the second bevel gear assembly 532a connected thereto to rotate, and the second bevel gear assembly 532a drives the first bevel gear 531a meshing with it to rotate, and the rotation of the first bevel gear 531a drives the motor 52a to rotate, thereby realizing that the motor 52a absorbs the pressure on the fixed cylinder 5c; at the same time, another part of the pressure of the wind tower body 1 will extend downward through the upper plate 51c of the fixed cylinder 5c, and at this time, the movable shaft 51b with a gap in the groove of the wind tower body 1 will move toward the support member 52b with the pressure on the wind tower body 1, and then Part of the pressure thereon will be buffered by the second spring 54b, while the other part of the pressure will be transmitted to the fixed cylinder 5c through the support shaft 3d, and then transmitted to the force decomposition frame 2 through the fixed cylinder 5c, and released to the ground through the force decomposition frame 2, thereby realizing the decomposition of the axial force on the wind turbine tower body 1. When the circumferential position of the bottom of the wind turbine tower body 1 is impacted by external forces such as seawater, the external force impacts the outer cylinder 8, and the outer cylinder 8 transmits the force to the force decomposition frame 2, and decomposes it through the movable connecting rod between each group of force decomposition frames 2. If the force is large, it can also be transmitted to the shock absorbing assembly through the force decomposition frame 2 for further decomposition, thereby realizing the decomposition of the wind turbine. The circumferential force at the bottom of the tower body 1 is decomposed; if the pressure on the wind turbine tower body 1 is less than the preset value, the motor 52a uses the absorbed energy to drive the first bevel gear 531a connected thereto to reverse, the second bevel gear reverses to drive the second bevel gear assembly 532a connected thereto to reverse, the second bevel gear drives the rotating shaft 534a connected thereto to reverse, the rotating shaft 534a drives the spur gear 533a connected thereto to reverse, the spur gear 533a drives the connecting rod 54a meshing therewith to move upward, thereby realizing the reset of the connecting rod 54a, when the pressure on the wind turbine tower body 1 exceeds the preset value, the above-mentioned pressure buffering process is repeated, which will not be described one by one here;The pressure on the wind turbine tower body 1 is partially buffered by the pressure regulating device 5a, and then partially buffered by the buffer device 5b, so as to realize multiple buffering release of the pressure. Finally, a small part of the pressure or the circumferential pressure is transmitted to the ground through the force decomposition frame 2, or when the external force is less than the preset value, the tower pressure can be completely released without the force decomposition frame 2, thereby avoiding the problem that the pressure concentrated on one area caused by the concrete fixing the bottom of the tower is easily broken, resulting in the instability of the wind turbine tower body 1 caused by the fracture and tilt of the wind turbine tower body 1, further improving the working stability and reliability of the wind turbine tower body 1, further saving the working cost, and greatly improving the working efficiency. ;

[0036] When the pressure on the wind turbine tower body 1 is large, a large impact force will be generated on the upper plate 51c of the fixing cylinder 5c, which will cause the connection between the upper plate 51c of the fixing cylinder 5c and the connecting rod 54a to be easily broken. In order to solve this problem, Figures 9 to 11 As shown, in this embodiment, an upper plate through groove 511c is provided on the upper plate 51c of the fixed cylinder 5c, and one end of the connecting rod 54a away from the support frame 51a extends to a preset distance of the upper plate 51c of the fixed cylinder 5c through the upper plate through groove 511c, and a sliding block 57a is provided at the extended end of the connecting rod 54a, and a guide groove matching the sliding block 57a is provided on the fixed cylinder 5c; in this way, when the fixed cylinder 5c generates pressure on the connecting rod 54a, the connecting rod 54a can perform a certain buffering movement in the through groove of the upper plate 51c to avoid the problem of easy breakage of the rigid connection, and the sliding block 57a on the connecting rod 54a slides along the guide groove to avoid the misalignment problem caused by the deviation of the moving distance of the connecting rod 54a from the direction, and a moving block can also be provided at the bottom of the sliding block, and a guide rail matching the moving block is provided in the guide groove, so as to further improve the shock absorbing effect of the shock absorbing assembly 5 on the wind power tower body 1 and further improve the working stability.

[0037] Under extremely strong pressure, the fixing tube 5c of the shock absorbing assembly 5 is easily damaged by the impact of the pressure on the wind turbine tower body 1. In order to improve the service life of the fixing tube 5c and solve the problem that it is easily damaged by the pressure on the wind turbine tower body 1, as shown in FIG. Fig.12As shown, the shock absorbing assembly 5 of this embodiment also includes a buffer seat assembly 3 arranged below the fixed cylinder 5c, wherein the buffer seat includes a base 3f arranged below the fixed cylinder 5c, a support plate 3g is arranged below the base 3f, a support shaft 3d is arranged in the middle of the support plate 3g, a bottom plate 3a is arranged below the support shaft 3d, the bottom plate 3a is connected to the fixed plate 4 on the ground, four groups of connecting rod mechanisms are arranged between the support plate 3g and the bottom plate 3a, each group of connecting rod mechanisms includes a support seat 3b and a rotating rod 3c, and a third spring 3e sleeved on the support shaft 3d and located between the support plate 3g and the bottom plate 3a; A part of the excess pressure released on the fixed cylinder 5c is transmitted to the support plate 3g along the base 3f under the fixed cylinder 5c, and the support plate 3g then transmits the pressure to the support shaft 3d and buffers it through the third spring 3e. The other part is transmitted to the support seat 3b along the rotating rod 3c, and is transmitted to the bottom plate 3a through the support seat 3b, and is released on the ground through the bottom plate 3a. This embodiment adopts the rotating rod 3c to avoid the problem of easy breakage of the rigid connection, further improves the stability of the fixed cylinder 5c and the wind tower body 1, greatly saves work costs, and improves work efficiency.

[0038] On the basis of the above, the present invention proposes a shock absorption method. First, the wind turbine tower body 1 is subjected to external force and transmits it to the upper plate 51c of the fixed tube 5c of the shock absorption assembly 5. The upper plate 51c is subjected to the force to drive the connecting rod 54a to move downward. The first spring 55a sleeved on the connecting rod 54a buffers a part of the pressure on the connecting rod 54a, and the other part of the pressure drives the spur gear 533a meshing with it to rotate as the connecting rod 54a moves downward. The rotation of the spur gear 533a drives the rotating shaft 534a connected thereto to rotate. The rotation of the rotating shaft 534a drives the second bevel gear assembly 532a connected thereto to rotate. The second bevel gear assembly 532a drives the first bevel gear 531a meshing with it. The first bevel gear 531a rotates and drives the motor 52a to rotate, thereby realizing that the motor 52a absorbs the pressure on the fixed cylinder 5c; at the same time, another part of the pressure of the wind tower body 1 will extend downward through the upper plate 51c of the fixed cylinder 5c. At this time, the movable shaft 51b with a gap in the groove of the wind tower body 1 will move toward the support member 52b along with the pressure on the wind tower body 1, and then part of the pressure thereon will be buffered by the second spring 54b, while the other part of the pressure will be transmitted to the fixed cylinder 5c through the support shaft 3d, and then transmitted to the force decomposition frame 2 through the fixed cylinder 5c, and released to the ground through the force decomposition frame 2, thereby realizing the axial force decomposition of the wind tower body 1. If When an external force impact occurs at the circumferential position of the bottom of the wind turbine tower body 1, the force thereon is again transmitted to the force decomposition frame 2 through the outer cylinder 8, and the force decomposition frame 2 realizes the circumferential force decomposition of the wind turbine tower body 1; then, if the pressure on the wind turbine tower body 1 is less than the preset value, the motor 52a uses the absorbed energy to drive the first bevel gear 531a connected thereto to reverse, the second bevel gear reverses to drive the second bevel gear assembly 532a connected thereto to reverse, the second bevel gear drives the rotating shaft 534a connected thereto to reverse, the rotating shaft 534a drives the spur gear 533a connected thereto to reverse, and the spur gear 533a drives the connecting rod 54a meshing therewith to move upward, thereby realizing the resetting of the connecting rod 54a; if the wind turbine When the pressure on the tower body 1 is greater than the preset value, part of the excess pressure released on the fixed cylinder 5c is transmitted along the base 3f under the fixed cylinder 5c to the support plate 3g, and then transmitted to the support shaft 3d through the support plate 3g, and buffered by the third spring 3e, and the other part is transmitted along the rotating rod 3c to the support seat 3b, transmitted to the bottom plate 3a through the support seat 3b, and released on the ground through the bottom plate 3a, further realizing the buffering release of the pressure on the wind turbine tower body 1 and the pressure on the fixed cylinder 5c, and further improving the shock absorption of the bottom of the wind turbine tower body 1; the above-mentioned buffering and releasing pressure process is repeated in sequence until the pressure on the wind turbine tower body 1 is less than the preset value.

[0039] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A wind power tower bottom shock absorbing device, characterized in that include: A wind turbine tower body (1), wherein concrete is arranged along the circumference of the bottom of the wind turbine tower body (1), and an inner cylinder is arranged outside the concrete; A shock absorbing assembly (5) is arranged at the bottom end of the wind turbine tower body (1), comprising a fixing cylinder (5c) sleeved on the bottom of the wind turbine tower body (1), wherein a chamber is formed between the inner wall of the fixing cylinder (5c) and the outer wall of the inner cylinder, and a pressure regulating device (5a) is arranged in the chamber, wherein a plurality of groups of the pressure regulating devices (5a) are arranged along the circumference of the wind turbine tower body (1) and are used to regulate the pressure transmitted by the wind turbine tower body (1); A force decomposition frame (2) is arranged between the fixed cylinder (5c) and the base surface and is arranged in a plurality of groups along the circumference of the fixed cylinder (5c) for decomposing external forces. An outer cylinder is arranged on the periphery of the force decomposition frame.

2. The wind turbine tower bottom shock absorbing device according to claim 1, characterized in that: The shock absorbing assembly (5) further comprises: A buffer device (5b), one side of the buffer device (5b) is connected to the outer wall of the inner cylinder, and the other side is connected to the inner wall of the fixed cylinder (5c), and is arranged in an array along the circumference of the wind turbine tower, staggered with the pressure regulating device (5a), and is used to buffer the pressure transmitted by the wind turbine tower body (1).

3. The wind turbine tower bottom shock absorbing device according to claim 2, characterized in that: The pressure regulating device (5a) comprises: A support frame (51a) is arranged on one side of the fixing cylinder (5c); An energy absorbing mechanism, connected to the support frame (51a) and used for absorbing pressure; A connecting rod (54a) is provided with a toothed structure on one side close to the energy absorbing mechanism and is connected to the energy absorbing mechanism to transmit pressure to the energy absorbing mechanism; A connecting plate (56a), which is away from the supporting frame (51a) and is arranged on the other side of the fixing tube (5c); A first elastic member is sleeved on the connecting rod (54a) and arranged between the connecting plate (56a) and the supporting frame (51a), and is used to buffer the pressure on the wind power tower body (1).

4. The wind turbine tower bottom shock absorbing device according to claim 3 is characterized in that: The buffer device (5b) comprises: A sleeve (53b) is arranged in a cavity formed between the inner wall of the fixed cylinder (5c) and the outer wall of the inner cylinder; A movable shaft (51b), one end of which is connected to the wind power tower body (1), and the other end of which is arranged in the sleeve (53b) and moves axially along the sleeve (53b); A support member (52b), one end of which is connected to the fixing cylinder (5c), and the other end of which is disposed in the sleeve (53b) and connected to the connecting shaft with a clearance fit; The stopper plates (55b) are provided in at least two groups, are respectively sleeved on the movable shaft (51b) and the support member (52b), and are located in the sleeve (53b); The second elastic member is arranged between the two groups of stop plates (55b) and sleeved on the movable shaft (51b) and the support member (52b), and is used to buffer the pressure on the wind power tower body (1).

5. The wind turbine tower bottom shock absorbing device according to claim 4 is characterized in that: The energy absorbing mechanism comprises: A motor (52a) is arranged on one side of the support frame (51a); A first bevel gear (531a) connected to the motor (52a); A rotating shaft (534a) passes through the support frame (51a) and is arranged at a preset distance from the first bevel gear (531a); A straight tooth (533a) is sleeved on the connecting shaft, one end of which is arranged at a preset distance from the bevel tooth and the other end of which is meshedly connected with the toothed structure on the connecting rod (54a); The second bevel gear assembly (532a) is sleeved on the rotating shaft (534a), symmetrically arranged with the spur gear (533a), and meshingly connected with the first bevel gear (531a), and is used to absorb the pressure on the connecting rod (54a) and transmit it to the motor (52a).

6. The wind turbine tower bottom shock absorbing device according to claim 5, characterized in that: The top surface of the fixed cylinder (5c) is provided with a through slot, one end of the connecting rod (54a) away from the support frame (51a) extends through the through slot to a preset distance from the top surface of the fixed cylinder (5c), and a sliding block (57a) is provided at the extended end of the connecting rod (54a), and a guide slot matching the sliding block (57a) is provided on the fixed cylinder (5c) for buffering the force received by the connecting rod (54a).

7. The wind turbine tower bottom shock absorbing device according to claim 6, characterized in that: The shock absorbing assembly (5) further comprises a buffer seat assembly (3) arranged between the fixing cylinder (5c) and the base surface, and used for buffering the pressure generated by the shock absorbing assembly (5) on the base surface.

8. The wind turbine tower bottom shock absorbing device according to claim 7, characterized in that: The buffer seat assembly (3) comprises: A base (3f) is arranged on one side of the fixed cylinder (5c); A bottom plate (3a) which is at a preset distance from the base (3f) and is arranged on the base surface; A support shaft (3d) is arranged between the base (3f) and the bottom plate (3a) and is used to support the base (3f); Connecting rods are arranged in a circumferential array along the base (3f) and are used to receive pressure on the base (3f) and transmit it to the base surface.

9. The wind turbine tower bottom shock absorbing device according to claim 8, characterized in that: The buffer seat assembly (3) further comprises: A third elastic member is sleeved on the support shaft (3d) and is located between the bottom plate (3a) and the base (3f), and is used to buffer the pressure on the base (3f).

10. The shock absorbing method of the wind turbine tower bottom shock absorbing device according to any one of claims 1 to 9, characterized in that The following steps are involved: S1, the wind turbine tower body (1) is subjected to external force and the force is transmitted to the top surface of the fixed cylinder (5c) of the shock absorbing assembly (5), the top surface is subjected to force to squeeze the pressure regulating device (5a), the connecting rod (54a) moves downward, driving the spur gear (533a) on the energy absorbing mechanism to rotate, the spur gear (533a) drives the rotating shaft (534a) to rotate, the rotating shaft (534a) drives the second bevel gear assembly (532a) to rotate, the second bevel gear assembly (532a) drives the first bevel gear (531a) to rotate until the pressure is transmitted to the motor (52a), the motor (52a) absorbs the pressure, and the axial force of the wind turbine tower body (1) is decomposed, the other part of the force is transmitted to the force decomposition frame through the outer cylinder, and the circumferential force of the wind turbine tower body (1) is decomposed through the force decomposition frame, and then enters S2; S2, the buffer device (5b) also receives the pressure transmitted by the wind turbine tower, the movable shaft (51b) receives the circumferential pressure of the wind turbine tower and moves in the direction of the support member (52b), generating an impact force on the support member (52b), at which time the second elastic member buffers the pressure on the support member, and transmits the pressure to the base surface through the fixed tube (5c) and the force decomposition frame (2), and then enters S3; S3. At this time, when the pressure on the wind turbine tower body (1) is less than a preset value, the motor (52a) reverses by absorbing the pressure, driving the first bevel gear (531a) to rotate, the first bevel gear (531a) drives the second bevel gear assembly (532a) to rotate, the second bevel gear assembly (532a) drives the rotating shaft (534a) to reverse, the rotating shaft (534a) drives the spur gear (533a) to reverse, the spur gear (533a) drives the connecting rod (54a) to move upward, and the pressure regulating device (5a) is reset; when the pressure on the wind turbine tower body (1) is greater than the preset value, enter S4; S4, the base (3f) of the buffer seat assembly (3) receives the pressure on the fixed cylinder (5c) of the damping assembly (5) and transmits it to the support shaft (3d), and buffers it through the third elastic member. At the same time, the connecting rod also receives the pressure, rotates at a preset angle and transmits it to the base surface, thereby releasing the pressure on the wind turbine tower body (1); S5, and so on, repeating steps S1 to S4 in sequence until the pressure on the wind turbine tower body (1) is less than a preset value.

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