CN110805529A

CN110805529A - Tuned mass damping device

Info

Publication number: CN110805529A
Application number: CN201910891522.8A
Authority: CN
Inventors: 袁鹏飞; 岳涛; 林胜; 胡伟辉; 苏泽涛; 杨超
Original assignee: Zhuzhou Times New Material Technology Co Ltd
Current assignee: Zhuzhou Times New Material Technology Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-02-18
Anticipated expiration: 2039-09-20
Also published as: CN110805529B

Abstract

The invention relates to a tuned mass damping device, comprising: a link extending in a longitudinal direction; a weight assembly connected at a lower end of the connecting rod; and a top connection assembly connected between the upper end of the connecting rod and the tower beam of the tower, and including an anti-rotation mechanism, including: the first connecting part is fixedly connected with the tower beam; a second connection part disposed below the first connection part and fixedly connected to an upper end of the connection rod; a pair of connecting shaft rods which are oppositely arranged at intervals, each of which extends along the longitudinal direction, the lower ends of the connecting shaft rods are fixedly connected with the second connecting parts, and the upper ends of the connecting shaft rods are inserted into the first connecting parts and are connected with the first connecting parts through connectors; and the connector comprises an outer sleeve part fixedly connected with the first connecting part, an inner sleeve part fixedly connected with the connecting shaft rod and sleeved in the outer sleeve part, and a middle elastic layer arranged between the inner sleeve part and the outer sleeve part. The device can effectively weaken the swing of the tower drum of the wind power engine.

Description

Tuned mass damping device

Technical Field

The invention relates to the technical field of vibration reduction of wind driven generators, in particular to a tuned mass damping device.

Background

Wind power generation is a clean energy source and has attracted much attention in recent years. In order to improve the power generation efficiency, high tower fans arranged in the areas with medium and low wind speeds and offshore wind farms gradually become an important direction for competition of various fan host plants. The increase in height of a tower section of thick bamboo can effectively improve the generating efficiency, but can lead to a tower section of thick bamboo to produce vibration, even great swing simultaneously. Such vibrations and oscillations have an adverse effect on the structural stability of the generator itself. In addition, the rotational speed of the unit may span the tower first order frequency. When this rotational speed crosses the tower frequency, resonance occurs, thereby posing a very serious safety hazard.

In the prior art, the transverse swing of the tower is reduced by hanging sandbags in the tower of the tower. This approach is very low cost and easy to implement. However, sandbags tend to spin during particular uses. In this case, the movement trajectory of the sandbag is very complicated and difficult to predict. This makes it difficult for the sandbag to achieve the desired effect of damping tower oscillation. Even more, in some cases, tower oscillations may be exacerbated.

Therefore, a device capable of effectively weakening the swing of the tower of the wind power engine is needed.

Disclosure of Invention

In order to solve the problems, the invention provides a tuned mass damping device which can effectively weaken the swing of a tower of a wind power engine.

According to the invention, a tuned mass damping device is proposed, comprising: a link extending along a longitudinal direction; a weight assembly connected at a lower end of the connecting rod; and a top coupling assembling, the top coupling assembling is connected between the upper end of connecting rod and the tower crossbeam of a tower section of thick bamboo to including preventing rotation mechanism, prevent rotation mechanism and include: the first connecting part is fixedly connected with the tower beam; the second connecting part is arranged below the first connecting part and fixedly connected with the upper end of the connecting rod; the pair of connecting shaft rods are oppositely arranged at intervals, each of the pair of connecting shaft rods extends along the longitudinal direction, the lower ends of the connecting shaft rods are fixedly connected with the second connecting parts, and the upper ends of the connecting shaft rods are inserted into the first connecting parts and connected with the first connecting parts through connectors; and the connector comprises an outer sleeve part connected with the first connecting part, an inner sleeve part sleeved in the outer sleeve part and connected with the connecting shaft rod, and an intermediate elastic layer arranged between the inner sleeve part and the outer sleeve part.

The structure of the connecting head, which is the outer sleeve part, the intermediate elastic layer and the inner sleeve part in this order from outside to inside, has a high radial stiffness (transverse stiffness) on the one hand and a low deflection stiffness on the other hand. The joint thus allows the connecting shaft, the second connecting portion and the connecting rod, as well as the weight assembly, to oscillate with respect to the first connecting portion and the tower, thereby attenuating the oscillation of the tower itself. Meanwhile, when the weighting assembly, the connecting rod and the second connecting part have autorotation tendency, the pair of shaft rods and the connecting head can be matched with the first connecting part to eliminate the tendency. Thereby, the self-rotation of the tuned mass damper can be effectively avoided and thus the oscillation of the device can be performed as desired. In this case, the tower oscillations can be effectively attenuated, thereby ensuring the structural stability of the wind turbine. Particularly, resonance between the swing of the tower and the rotation of the unit can be avoided, and potential safety hazards can be effectively avoided.

In one embodiment, the inner lateral surface of the outer sleeve and/or the outer lateral surface of the inner sleeve are configured as arcuate surfaces, the middle portion of which protrudes radially outwards.

In one embodiment, first recessed portions are configured at the upper and lower edges of the middle elastic layer.

In one embodiment, the top connection assembly further comprises an outer mounting sleeve, the connector is connected to the first connection portion through the outer mounting sleeve, and the outer mounting sleeve is configured to be pre-extruded to be sleeved outside the outer sleeve member, so that the middle elastic layer of the connector is pre-compressed.

In one embodiment, a mounting slot for mating with the inner sleeve and a thread for mating with the first connection portion are provided on the outer mounting sleeve.

In one embodiment, the top connection assembly further comprises an inner mounting sleeve, the connector is connected with the connection shaft rod through the inner mounting sleeve, and the inner mounting sleeve is configured to be arranged in the inner sleeve in a pre-extrusion mode, so that the middle elastic layer of the connector is pre-compressed.

In one embodiment, the inner mounting sleeve is fixedly connected with the connecting shaft rod into a whole.

In one embodiment, the connecting shaft is slidable in axial direction relative to the inner sleeve of the connecting head.

In one embodiment, a gap is provided between the connecting shaft and the inner sleeve of the connecting head, or a linear bearing or a wear-resistant material body is provided.

In one embodiment, a lifting hole is configured on the second connecting part, and a lifting rod can be selectively inserted into the lifting hole to fixedly connect the second connecting part and the tower beam together.

In one embodiment, the top connection assembly includes a longitudinal load mechanism comprising: the fixed connecting piece is fixedly connected with the tower beam and comprises an upward convex arc-shaped fixed joint surface; the movable connecting piece is arranged above the fixed connecting piece and is spaced from the fixed connecting piece, the movable connecting piece is connected with the upper end of the connecting rod, and the movable connecting piece comprises a concave arc-shaped movable joint surface facing downwards; and the elastic connecting piece is arranged between the fixed connecting piece and the movable connecting piece, and the elastic connecting piece is provided with an arc-shaped lower surface matched with the fixed joint surface of the fixed connecting piece and an arc-shaped upper surface matched with the movable joint surface of the movable connecting piece.

In one embodiment, the arcuate stationary engagement surface has a planar portion at the center extending in the lateral direction, and/or the arcuate movable engagement surface has a planar portion at the center extending in the lateral direction.

In one embodiment, a second recessed portion is provided at an edge of the elastic connector, the second recessed portion being configured to at least partially close when loaded in the longitudinal direction.

In one embodiment, a metal partition is embedded in the elastic connection member, the metal partition extends in the entire elastic connection member, or the metal partition is only disposed at the edge of the elastic connection member and not at the center of the elastic connection member.

In one embodiment, the fixed connecting part corresponds to the first connecting part, and the movable connecting part is fixedly connected with the second connecting part.

In one embodiment, the movable connector corresponds to the second connecting portion.

In one embodiment, the weight assembly includes one weight unit, and a collision mechanism is disposed under the one weight unit, the collision mechanism being configured to correspond to a mating collision member installed in the tower so as to be capable of colliding with each other.

In one embodiment, the weight assembly comprises at least two weight units spaced apart from each other in the longitudinal direction, a collision mechanism being provided between two of the at least two weight units, the collision mechanism being configured to correspond to a mating collision member mounted within the tower so as to be able to collide with each other, the at least two weight units being configured to be able to adjust the center of gravity of the tuned mass damping device to the collision mechanism.

In one embodiment, the impact mechanism comprises: a collision body sleeved in the matching collision piece in an annular structure; and a buffering elastic member connected between the collision body and a weight unit located above the collision body.

In one embodiment, the cushion spring is configured as a cylindrical spring extending in the longitudinal direction.

In one embodiment, an elastic pad is disposed between the striker body and the mating striker, the elastic pad being made of a metal or polymer material softer than the striker body.

In one embodiment, the weight unit includes a pallet extending in a lateral direction, and a weight plate stacked on the pallet.

In one embodiment, the tuned mass damping device further comprises a bottom spring assembly disposed below the weight assembly, the bottom spring assembly comprising a bottom resilient member extending in a longitudinal direction and connected between the bottom wall of the tower and the weight assembly.

In one embodiment, the bottom spring assembly further comprises: a first connecting rod extending downward from the weight assembly in a longitudinal direction; and the second connecting rod extends along the longitudinal direction, the upper end of the second connecting rod is hinged with the first connecting rod, and the lower end of the second connecting rod is connected with the bottom elastic part.

In one embodiment, the bottom spring assembly further comprises a third connecting rod connected between the bottom elastic member and the bottom wall of the tower, and the third connecting rod is hinged with the bottom wall of the tower.

In one embodiment, the tuned mass damping device further comprises a damper connected between the first connecting rod and the side wall of the tower, the damper extends in the transverse direction, and two ends of the damper are hinged to the first connecting rod and the tower respectively.

In one embodiment, two ends of the damper are respectively hinged with the first connecting rod and the side wall of the tower.

In one embodiment, two of said dampers are spaced from each other in the transverse direction by an angle of 90 °.

In one embodiment, the damper has an inclination in the longitudinal direction, and both ends of the damper are hinged to the first connecting rod and the bottom wall of the tower, respectively.

In one embodiment, the link comprises: a connecting mandrel connected between the top connection assembly and the weight assembly, the connecting mandrel being configured to be elongated to reduce its weight; and an outer housing extending in a longitudinal direction to abut between the top connection assembly and the weight assembly, the outer housing surrounding the connection mandrel.

Compared with the prior art, the invention has the advantages that: the autorotation of the tuned mass damping device can be effectively avoided, and therefore the swinging of the tower can be weakened more effectively. In addition, when the device swings beyond a certain amplitude, the collision mechanism collides with the mating collision member to dissipate the energy of the device swing while causing the device to swing in the opposite direction.

Drawings

The invention is described in more detail below with reference to the accompanying drawings. Wherein:

FIG. 1 illustrates an exemplary embodiment of a tuned mass damping device of the present invention;

FIG. 2 shows an enlarged partial view of the top connection assembly of the device of FIG. 1;

FIG. 3 shows a cross-sectional view of the top connection assembly of FIG. 2;

FIG. 4 shows a partial cross-sectional view of the top connection assembly of FIG. 3;

FIG. 5 shows an enlarged partial view of a preferred embodiment of the top connection assembly;

FIGS. 6 and 7 are block diagrams of the top attachment assembly of FIG. 5 in different states, respectively;

FIGS. 8 and 9 respectively illustrate another embodiment of a top connection assembly;

fig. 10 and 11 show perspective views of a portion of the top connection assembly;

FIG. 12 illustrates a cross-sectional view of one embodiment of a connector in the top connection assembly;

FIGS. 13 and 14 show schematic block diagrams of an embodiment of a linkage of a tuned mass damping device;

figures 15 and 16 show one embodiment of a weighted component of a tuned mass damping device;

FIGS. 17 and 18 illustrate one embodiment of a crash mechanism for a tuned mass damper;

FIG. 19 illustrates one embodiment of a bottom spring assembly in a tuned mass damping device;

FIG. 20 shows another embodiment of a bottom spring assembly in a tuned mass damping device;

figures 21 and 22 show another embodiment of the top linkage assembly of the tuned mass damping device of the present invention;

FIGS. 23 and 24 show another embodiment of a crash mechanism;

FIG. 25 shows yet another embodiment of a crash mechanism;

fig. 26 to 28 show different embodiments of the mounting of the connecting head between the connecting shaft and the fixing plate 14, respectively.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

Detailed Description

The invention will be further explained with reference to the drawings.

Figure 1 shows one embodiment of a tuned mass damping device (hereinafter referred to simply as the "device") 100 of the present invention. The device 100 is arranged in a tower 9 of a wind driven generator and comprises a top connecting assembly 1, a connecting rod 2, a weight assembly 3 and a bottom spring assembly 6 which are arranged from top to bottom in sequence, wherein the top connecting assembly 1 is connected with a tower beam 91 at the top of the tower 9, and the bottom spring assembly 6 is connected with a bottom wall 92 of the tower 9. In addition, a collision mechanism 4 may be provided near the weight assembly 3. A damper connected to the side wall of the tower 9 is also provided at the bottom spring assembly 6.

The detailed structure of the apparatus 100 will be described in more detail below in conjunction with fig. 2-25.

As shown in fig. 2 and 3, the top connection assembly 1 includes a fixing plate 14 extending in the lateral direction, the fixing plate 14 being disposed below the tower cross member 91 substantially in parallel with the tower cross member 91. A support pipe 11 is provided between the tower beam 91 and the fixed plate 14. Bolts are passed through the tower cross-member 91, the support pipes 11 and the fixing plate 14 to fix them together.

The top attachment assembly 1 further comprises a first movable plate 15 arranged below the fixed plate 14 extending in the transverse direction. A connecting shaft 18 extending in the longitudinal direction passes through the fixed plate 14 and the first movable plate 15 to connect them together, wherein one end of the connecting shaft 18 is fixedly connected with the first movable plate 15, and the other end is connected with the fixed plate 14 by a connecting head 16. The first movable plate 15 may be fixedly connected with the lower link 2.

In addition, the top connection assembly 1 further includes a lower ball seat 133 provided on the fixed plate 14, and the lower ball seat 133 protrudes upward with respect to the fixed plate 14 to form an arc-shaped fixed engagement surface. On this fixed engagement surface, a resilient connector 132 is provided. An upper ball seat 131 is provided on the elastic connection member, the upper ball seat 131 being configured with a downwardly directed concave lower surface, which is also arc-shaped. Thereby, the upper ball seat 131 and the lower ball seat 133 are spaced apart from each other in a longitudinal direction, and the elastic connection member 132 is connected therebetween. The resilient connecting member 132, the lower ball seat 133 and the upper ball seat 131 are fixedly connected together, for example by vulcanization, to form one integral component. A second movable plate 12 may be further provided above the upper ball seat 131, and fixedly connected to the first movable plate 15 by an auxiliary connecting member 19 extending across the fixed plate 14 in the longitudinal direction. Thereby, the weight of the weight assembly 3 may be transferred to the upper ball seat 131 through the link 2, the first movable plate 15, the auxiliary connection member 19 and the second movable plate 12, and thereby the elastic connection member 132 is compressed downward. This arrangement allows the resilient connecting member 132 to be designed with greater longitudinal stiffness and greater longitudinal load carrying capacity. At the same time, the resilient connecting member 132 has a small deflection rigidity (i.e., about the center of the arc), which allows the upper ball seat 131 to rotate with respect to the lower ball seat 133, thereby allowing the link 2 and the weight assembly 3 fixed to the upper ball seat 131 to swing with respect to the tower 9 fixed to the lower ball seat 133.

From another perspective, the fixing plate 14, the tower cross member 91 and the support pipe 11 are connected by bolts to form a substantially square ring structure. The second movable plate 12, the auxiliary connecting member 19 and the first movable plate 15 are connected by bolts to form another substantially square ring structure. The two ring structures are fitted to each other and connected together by the upper and

lower seats

131 and 133 and the elastic connection member 132 to perform a load-bearing function in a longitudinal direction.

In one embodiment, the lower surface (i.e., the movable engagement surface) of the upper ball seat 131 and the upper surface (i.e., the fixed engagement surface) of the lower ball seat 133 are each configured as a portion of a sphere, and they have the same center. Whereby the elastic connection between them has a uniform thickness. The arrangement is easy to process and has good longitudinal bearing capacity and shearing deformation capacity.

In another embodiment, the lower surface of the upper ball seat 131 and the upper surface of the lower ball seat 133 are configured as a portion of a sphere, but have different radii, wherein the lower surface of the upper ball seat 131 has a smaller radius and the upper surface of the lower ball seat 133 has a larger radius. Whereby the resilient elastic connection between them is thicker in the middle part and thinner in the edge parts. This arrangement advantageously reduces rubber stresses in the intermediate portion, making the resilient connecting member 132 less susceptible to fatigue and having a high longitudinal (vertical) load carrying capacity.

In the embodiment shown in fig. 5, the lower surface of the upper ball seat 131 and the upper surface of the lower ball seat 133 each include a middle straight line portion and an arc portion at the edge. This arrangement facilitates reducing strain in the intermediate portion of the intermediate elastic member 132 and improves longitudinal load bearing capacity. In addition, a second recess portion 132A is also preferably configured at an edge of the middle elastic member 132. As shown in fig. 6, the second concave portion 132A has a sharp-pointed gap when the intermediate elastic member 132 is unloaded (i.e., in a free state). As shown in fig. 7, when the intermediate elastic member 132 is loaded (i.e., in a loaded state), the intermediate elastic member 132 is compressively deformed so that the gap of the second concave portion 132A is at least partially closed, i.e., the upper and lower sidewalls of the gap are brought into close proximity to each other to be at least partially fitted together. Thus, when the weight assembly 3 swings with respect to the tower 9, the load at the edge of the intermediate elastic member 132 is a static load. This is very advantageous in extending the fatigue life of the intermediate elastic member 132. Preferably, as shown in fig. 5-7, the second recess portion 132A is closer to the upper ball seat 131. This structure facilitates the manufacture of the mold, and can effectively reduce the manufacturing cost of the device 100.

As shown in fig. 8 and 9, a metal spacer 134 may be further embedded in the intermediate elastic member 132. In the embodiment shown in fig. 8, the metal diaphragm 134 extends throughout the intermediate resilient member 132. This arrangement is more advantageous in increasing the longitudinal stiffness of the intermediate resilient member 132 and thereby increasing its longitudinal load carrying capacity. In the embodiment shown in fig. 9, the metal spacer 134 extends only at the edge of the middle elastic member 132, and does not extend to the middle of the middle elastic member 132. This is more advantageous than the embodiment of fig. 8 in reducing the strain in the middle portion of the middle spring 132 and thus making it less fatiguing. It should be understood that the metal separator 134 may be one layer or may be multi-layered.

The upper ball seat 131 may be fixedly coupled to the second movable plate 12 by bolts. In addition, as shown in fig. 10, a positioning boss 131A may be provided at an upper portion of the upper ball seat 131. Correspondingly, matching recesses may be provided on the underside of the second flap 12. When the device 100 is assembled, the upper ball seat 131 and the second movable plate 12 can be positioned and engaged by the cooperation of the positioning boss 131A and the groove. Preferably, the positioning boss 131A may be fixedly connected to the second movable plate 12 together with a bolt. Thus, even if the bolt is unexpectedly damaged or fails to perform its function, the engagement of the positioning boss 131A with the groove can ensure the connection between the upper ball seat 131 and the second movable plate 12, and thus the swing motion of the weight assembly 3 can be smoothly performed.

Similarly, the lower ball seat 133 may be fixedly coupled to the fixed plate 14 by bolts. In addition, as shown in fig. 11, a positioning boss 133A may be provided at a lower portion of the lower ball seat 133. Correspondingly, matching recesses can be provided on the upper side of the fixing plate. The lower ball seat 133 and the fixed plate 14 may be positioned and engaged by the mating of the positioning boss 133A and the recess when the device 100 is assembled. Preferably, the positioning boss 133A may be combined with a bolt to fixedly couple the lower ball seat 133 and the fixing plate 14. Thus, even if the bolt is unexpectedly damaged or fails to perform its function, the engagement of the positioning boss 133A with the groove can ensure the connection between the lower ball seat 133 and the fixed plate 14, and thus the swing motion of the weight assembly 3 can be smoothly performed.

In the embodiment shown in fig. 2 and 3, the fixed plate 14, the lower ball seat 133, the elastic connection member 132, the upper ball seat 131 and the second movable plate 12 of the top connection assembly 1 form a longitudinal bearing mechanism in the present invention, wherein the fixed plate 14 and the lower ball seat 133 form a fixed connection member and the upper ball seat and the second movable plate form a movable connection member. It should be understood that various features in the longitudinal load bearing mechanism may be added, reduced, or replaced accordingly, as desired. It should also be understood that in the embodiment shown in fig. 2 and 3, there is some structural correspondence between the longitudinal bearing mechanism and the anti-rotation mechanism. For example, the fixed plate 14 and the lower ball seat 133 relate to both the fixed connection in the longitudinal bearing mechanism and the first connection in the anti-rotation mechanism. That is, the embodiment shown in fig. 2 and 3 includes an organic combination of the longitudinal bearing mechanism and the anti-rotation mechanism.

The construction of the above-described connecting head 16 is shown in more detail in fig. 12. The coupling head 16 includes a substantially cylindrical inner sleeve 161 extending in the longitudinal direction, an outer sleeve 163 fitted over the inner sleeve 161 at a distance from the inner sleeve 161, and an intermediate elastic layer 162 provided between the inner sleeve 161 and the outer sleeve 163. The intermediate elastic layer 162 may be made of rubber, for example. As a result, the connection head 16 (and particularly the intermediate elastic layer 162 thereof) has a greater radial stiffness, while having a lower deflection stiffness. That is, when the connecting head 16 is subjected to a force in the radial direction, the intermediate elastic layer 162 is mainly subjected to a pressure in the radial direction and is not easily compressed and deformed in the radial direction; when the connecting head 16 is subjected to a force in the deflecting direction, the intermediate elastic layer 162 is mainly subjected to a shear force in the longitudinal direction, and is easily subjected to shear deformation.

Preferably, the intermediate elastic layer 162 is press-fitted between the inner sleeve member 161 and the outer sleeve member 163 at the time of assembly to achieve pre-compression in the radial direction. This precompression helps to extend the useful life of the coupling head 16. This precompression may be achieved by squeezing the outer sleeve member 163. The outer sleeve member 163 may be made of, for example, 20# steel, 45# steel, or the like. The outer sleeve member 163 is characterized by a relatively thin wall thickness, and the outer sleeve member 163 may be slightly plastically deformed during extrusion to achieve pre-compression.

In one embodiment, as shown in fig. 26, the connecting head 16 may be directly mounted in a stepped bore in the fixed plate 14, and the outer sleeve member 163 may be connected to the fixed plate 14 with its lower end engaging a stepped surface of the stepped bore. In addition, the connecting shaft 18 is inserted into the inner sleeve 161. Thus, pre-compression of the intermediate resilient layer 162 (the connector 16) is achieved by fitting between the connecting shaft 18 and the fixing plate 14. In the embodiment shown in fig. 26, the inner sleeve 161 may be fixedly attached to the connecting shaft 18. However, preferably, the inner sleeve 161 is in contact with the connecting shaft 18 without being connected to allow the inner sleeve 161 to slide in the axial direction relative to the shaft 18. In this case, the coupling head 16 does not carry the shaft 18 in the axial direction. This prevents the shaft 18 from pulling the inner sleeve 161 in the axial direction, and is thus beneficial to prevent the intermediate elastic layer 162 from having shear deformation in the axial direction due to axial displacement of the inner sleeve 161 relative to the outer sleeve 163. This is beneficial to extend the useful life of the connector 16.

In another embodiment, as shown in fig. 27, the connecting head 16 is connected to the fixed plate 14 by an outer mounting sleeve 17. The outer mounting sleeve 17 is fixedly attached to the stepped bore of the stationary plate 14 by means of a screw thread. The outer mounting sleeve 17 is provided with a slot for mounting the outer sleeve 163 of the connector 16, while the inner sleeve 161 is connected to the connecting shaft 18 inserted therein. In this case, a step surface is formed on the outer mounting sleeve 17, which cooperates with the lower end of the outer sleeve part 163 of the connecting head 16. By this arrangement, the mounting sleeve 17, the connecting head 16 and the connecting shaft 18 can be mounted together to form a single unit. Thus, the precompression of the intermediate elastic layer 162 (the coupling head 16) is achieved by fitting between the mounting sleeve 17 and the connecting shaft 18. Thereafter, the mounting sleeve 17, the connecting head 16 and the connecting shaft 18 may be assembled together at the fixed plate 14 and the first movable plate 15. The pre-compression of the connection head 16 makes the operation at the construction site for installing the entire device 100 easier and simpler. In the embodiment shown in fig. 27, there is a gap between the inner sleeve 161 and the connecting shaft 18. This effectively ensures that the connecting rod 18 can slide freely in the axial direction with respect to the inner sleeve 161.

In the embodiment shown in fig. 28, the connecting head 16 is connected to the fixed plate 14 by means of an outer mounting sleeve 17. Further, a linear bearing or an abrasion resistant material 82 is provided between the inner sleeve 161 of the connecting head 16 and the connecting shaft 18, and an inner attachment sleeve 81 is provided between the linear bearing or the abrasion resistant material 82 and the inner sleeve 161. The coupling head 16 may be pre-compressed by first applying the inner mounting sleeve 81 and the outer mounting sleeve 17 to the inner and outer sides of the coupling head 16, respectively. They can then be mounted together between the fixed plate 14 and the linear bearing or body of wear-resistant material 82. The outer mounting sleeve 17, the coupling head 16, the inner mounting sleeve 81, the body 82 of linear bearing or wear-resistant material and the connecting shaft 18 are compressively engaged with each other to facilitate compact and stable mounting while also facilitating further compression of the intermediate resilient layer 162 in the coupling head 16. At the same time, a sliding movement of the connecting shaft 18 relative to the connecting head 16 in the axial direction can be effected by means of the linear bearing or the body 82 of wear-resistant material.

The wear-resistant material 82 may be made of modified high-molecular polyethylene, nylon, or the like.

It will be appreciated that it is necessary to ensure that there is a certain clearance between the fixing plate 14 and the connecting shaft 18 (see figure 3) to ensure that the connecting shaft 18 is able to swing freely.

Preferably, as shown in fig. 12, the inner side surface 163A of the outer sleeve member 163 and the outer side surface 161A of the inner sleeve member 161 are configured as arcuate surfaces, the central portions of which in the longitudinal direction project radially outward. With this arrangement, it is more advantageous to reduce the deflection rigidity of the joint 16. This is because the middle elastic layer can be relatively more subjected to shear deformation and relatively less subjected to compression deformation when the outer sleeve 163 and the inner sleeve 161 are subjected to opposite forces in the longitudinal direction, respectively.

In addition, it is also preferable that, as shown in fig. 12, the middle elastic layer is configured at both upper and lower edges thereof with first concave portions 162A. By providing such a first recessed portion 162A, the deformation at the edge of the middle elastic layer is substantially shear deformation and substantially no compression deformation when the outer sleeve 163 and the inner sleeve 161 are subjected to opposing forces in the longitudinal direction, respectively. Thereby, the shear rigidity of the joining head 16 is further advantageously reduced.

With the above arrangement, when the weight-increasing assembly 3 and the connecting rod 2 swing laterally relative to the tower 9, the weight-increasing assembly 3, the connecting rod 2, the first movable plate 15, the connecting shaft 18 and the inner sleeve member 161 can swing together relative to the outer sleeve member 163, the outer mounting sleeve 17 (if any), the fixed plate 14, the support pipe 11 and the tower beam 91. Therefore, when the tower 9 swings transversely, the structure can swing in the opposite direction, so that the transverse swing of the tower 9 is weakened.

In addition, as shown in fig. 2 and 3, the top connection assembly 1 comprises a pair of the above-mentioned connection shafts 18, and is correspondingly provided with a pair of connection heads 16. The pair of connecting shafts 18 and the respective connecting heads 16 are spaced apart from each other in the transverse direction. Since the connecting head 16 has a great radial rigidity, the middle elastic layer 162 of the connecting head 16 does not undergo a significant compression deformation when the weight assembly 3 and the connecting rod 2 have a tendency to rotate laterally together with the first movable plate 15, the connecting shaft 18 and the inner sleeve 161. In this case, the above-mentioned tendency is not translated into an actual movement or the rotation produced is very small and negligible.

The distance between the two connecting shafts 18 can be adjusted as desired. The larger the distance is, the more easily the above-mentioned rotation is prevented.

In the embodiment shown in fig. 2 and 3, the above-mentioned fixed plate 14, the first movable plate 15, the pair of connecting shafts 18 and the pair of connecting heads 16 in the top connecting assembly 1 form the anti-rotation mechanism in the present invention, wherein the fixed plate 14 forms the first connecting portion and the first movable plate 15 forms the second connecting portion. It should be understood that various features of the anti-spin mechanism may be added, reduced, or replaced accordingly, as desired.

In a preferred embodiment, as shown in fig. 4, the center of rotation R2 of the elastic link 132 is aligned in the lateral direction, i.e., at the same height, as the center of rotation R2 of the middle elastic layer 162 of the connecting head 16. By this arrangement, the stresses and strains carried by the resilient connecting members 132 and the intermediate resilient layer 162 are relatively uniform, thereby effectively extending the life of the top attachment assembly.

In addition, a lifting hole 154 may be formed on the fixing plate 14. If replacement or maintenance of the various structures in the top attachment assembly 1 is required, the second movable plate 15 may be temporarily secured to the top of the tower 9 by attaching lifting rods (not shown) between the lifting holes 154 and the tower cross-members 91. At this time, the respective components in fig. 2 can be easily replaced and maintained.

Fig. 21 and 22 show another embodiment of the top connection assembly 1. In this solution, the second flap 12 and the auxiliary connecting element 19 replace the movable element 71 in the form of a one-piece U. That is, in this embodiment, for the longitudinal load bearing mechanism, the articulating components are the upper ball seat 131 and the articulating member 71. It should be understood that the movable member 71 may also be used in the embodiment shown in fig. 2. However, the second movable plate 12 and the auxiliary connecting member 19, which are independent of each other, are more easily disassembled than the one-piece movable member 71; in contrast, the one-piece movable piece 71 is easier to install.

In addition, in the embodiment shown in fig. 21 and 22, the rotation preventing mechanism includes a top mount 72 fixedly connected to a tower beam 91 by a bolt. A pair of coupling heads 16 spaced apart from each other are provided in the top mount 72. A pair of spaced apart connecting shafts 18 have upper ends inserted into the pair of connecting heads 16, respectively, and lower ends extending longitudinally downward to be fixedly connected to the movable member 71. This arrangement facilitates the provision of a longer connecting shaft 18, which facilitates a more flexible swinging of the weight assembly 3 than in the embodiment shown in fig. 2. However, the configuration shown in fig. 2 facilitates setting the distance between the two connecting shafts 18 to be larger, thereby further facilitating avoiding the occurrence of the self-rotation of the weight assembly 3.

In the embodiment shown in fig. 21 and 22, the longitudinal bearing mechanism and the anti-rotation mechanism also have a certain structural correspondence. For example, the movable member 71 relates to both a movable connecting member in the longitudinal bearing mechanism and a second connecting portion in the rotation prevention mechanism. That is, the embodiment shown in fig. 21 and 22 also includes an organic combination of the longitudinal bearing mechanism and the rotation preventing mechanism.

Fig. 13 and 14 show the structure of the connecting rod 2 in detail. The connecting rod 2 comprises an elongated connecting mandrel. The connecting mandrel may be one or more screws 23. For example, in the case of a very long connecting rod 2, a plurality of threaded rods 23 can be continued together in the longitudinal direction by means of the joint 22. The upper end of the screw 23 is connected with the first movable plate 15 of the top connecting assembly 1 in a threaded manner, and the lower end is fixedly connected with the weighting assembly 3. A plurality of connecting mandrels may be arranged parallel to each other as shown in fig. 13 to ensure stability of the connection between the top connecting member 1 and the weight member 3. Alternatively, the connecting mandrel may be a wire rope or sling or the like. In addition, the connecting rod 2 further comprises an outer shell 21 sleeved outside the connecting mandrel. The outer shell 21 is abutted between the top connecting component 1 and the weighting component 3, and the bending of the slender connecting mandrel can be effectively prevented. The connecting rod 2 can effectively reduce the weight of the connecting rod on one hand and can be firmly connected on the other hand.

Fig. 15 and 16 show the structure of the weight assembly 3 in detail. The weighing assembly 3 comprises two weighing

cells

3A, 3B, which are arranged spaced apart from each other in the longitudinal direction. The weight unit 3A is fixedly connected to the lower end of the connecting rod 2. The weight unit 3B is connected to the weight unit 3A by a connecting rod 34. The connecting rod 34 has a structure similar to that of the connecting rod 2, and includes a screw 341 and an outer housing 342. The detailed structural coordination thereof is not repeated herein.

The weighting unit 3A includes a tray 33 extending in the lateral direction, and one or more weighting plates 31 stacked on the tray 33. The connecting rod 2 can extend to the tray 33 and is fixedly connected with the tray 33. The weighted plate 31 may be made of two parts which are arranged around the connecting rod 2 in a surrounding manner. This facilitates the addition or subtraction of the weight plate during use, thereby facilitating the adjustment of the weight unit to adjust the center of gravity of the apparatus 100. The weighting plate 31 may be fixed to the tray 33 by bolts 32.

Preferably, a corresponding groove may be provided at a lower surface of the tray 33 at a position corresponding to the connection rod 34, so that the upper end of the connection rod 34 may be inserted into the groove at the time of assembly for positioning.

Similarly, the weighting unit 3B includes a tray 36 and one or more weighting plates 35. The weight plate 35 is disposed around the connecting rod 34 in a surrounding manner. As shown in fig. 16, the connecting rod 34 extends downward to the tray 36, and the screw 341 extends through the tray 36 and is fixedly connected to the tray 36 via the backing plate 343 and the nut 344.

It should be understood that only one weight unit, or three, four or more weight units may be provided as necessary. In addition, the weighted plate may be configured as a rectangle, a circle, a triangle, or any other suitable shape, as desired. In the case where one weight unit is provided, the collision mechanism 4 is disposed below the one weight unit. In the case where three or more weight units are provided, the collision mechanism 4 may be provided between two of the weight units.

As shown in fig. 15, a collision mechanism 4 may also be provided between the two

weight units

3A, 3B. Fig. 17 and 18 show a specific structure of the collision mechanism 4.

As shown in fig. 17, the collision mechanism 4 includes a cushion elastic member 44 made of rubber. The cushion elastic member 44 is configured as a columnar structure extending in the longitudinal direction. The cushion elastic member 44 has an upper end fixedly connected to the mounting plate 42 and a lower end fixedly connected to the collision body 45. The mounting plate 42 is connected to the tray 33 of the weight unit 3A by bolts 43. One or more spacers 41 may be added between the mounting plate 42 and the tray 33 as needed to adjust the height of the mounting plate 42, and finally, the height of the collision body 45 is adjusted.

In correspondence with the collision body 45, a mating collision member 46 fixed with respect to the tower 9 is provided in the tower 9. The mating striker 46 can be designed, for example, in the form of a ring, the striker body 45 being enclosed by the mating striker 46. The height of the collision body 45 is adjusted to correspond to the height of the mating collision member 46. When the weight unit 3 swings, the collision body 45 swings together with the swing. When the weight assembly 3 and the collision body 45 swing more than a certain magnitude, the collision body 45 may collide with the mating collision member 46. At this time, the swinging of the collision body 45 is prevented, but the swinging of the weight unit 3 is continued by the inertia, so that the cushion elastic member 44 is shear-deformed. The shearing deformation dissipates the energy of the continuous oscillation of the weighting assembly 3 and causes it to generate a force in the opposite direction to restrain the continuous oscillation of the weighting assembly 3. In this way, it is advantageous to prevent the amplitude of oscillation of the weight assembly 3 from being further increased.

As shown in fig. 18, the collision body 45 may be configured in a ring shape so that the connecting rod 34 can pass therethrough to connect the two

weight units

3A, 3B together. A certain space is left between the connecting rod 34 and the colliding body 45 to reserve a space for the swing of the connecting rod 34 in the case where the colliding body 45 stops swinging and the connecting rod 34 continues swinging by inertia. An elastic pad 48 may be provided on the connecting rod 34 to buffer a possible collision between the connecting rod 34 and the collision body 45. Alternatively or additionally, a corresponding elastic cushion can also be provided on the inner side of the impact body 45.

Preferably, as shown in fig. 18, an elastic pad 47 is provided on the inner side of the mating collision member 46 to cushion the collision between the mating collision member 46 and the collision body 45. Alternatively or additionally, a corresponding elastic cushion can also be provided on the outside of the impact body 45. The

elastic pads

47 and 48 may be made of a relatively soft metal or a polymer material (e.g., pure aluminum or polyurethane, etc.).

In a preferred embodiment, the center of gravity of the device 100 can be adjusted by the weight assembly 3 to the impact mechanism 4, in particular to the impact body 45. Thus, when the collision body 45 collides with the mating collision member 46, the swing of the weight unit 3 can be stopped easily and effectively.

In the embodiment shown in fig. 17, a plurality of columnar cushion elastic members 44 are provided. These cushion elastic members 44 are arranged next to each other in sequence on an annular collision member 46 to form a ring.

Fig. 23 and 24 show a buffering elastic member 44' as another embodiment. The damping spring is configured as an integral ring. A plurality of studs 49 are provided along the annularly extending path of the cushion spring 44'. These studs 49 may be used to fixedly connect the mounting plate 42 and the impactor 45. Such a cushion spring 44' is more expensive to manufacture, but has a higher stiffness than the arrangement of the cushion spring 44 in fig. 17.

Fig. 25 shows a cushion elastic member 44 ″ as another embodiment. The damping spring 44 "is configured as a part of a segment. A plurality of cushion springs 44 "may be fixedly disposed between the mounting plate 42 and the collision body 45 around a full circle.

Fig. 19 shows a specific structure of the bottom spring assembly 6 of the device 100. The bottom spring assembly 6 includes a first connecting rod 61 fixedly connected to the tray 36 and extending downward from the tray 36, a second connecting rod 62 connected below the first connecting rod 61, and a bottom elastic member (spring) 63 connected between the second connecting rod 62 and a bottom wall 92 of the tower 9. The second connecting rod 62 is fixedly connected with the spring 63 and is hinged with the first connecting rod 61. By this arrangement, when the weight assembly 3 swings, the frequency at which the weight assembly 3 swings can be adjusted so as to be perfectly matched with the swing frequency of the tower 9.

Fig. 20 shows another embodiment of the bottom spring assembly 6. The embodiment of figure 20 differs from the embodiment of figure 19 in that a third connecting rod 64 is connected between the spring 63 and the bottom wall 92 of the tower 9. One end of the third connecting rod 64 is fixedly connected with the spring 63, and the other end is hinged with the bottom wall 92. Thereby, the spring 63 can be deformed substantially only in the axial direction thereof. This is advantageous in improving the working efficiency of the spring 63 and extending the life span of the spring 63.

Further, a first mounting plate 65 may be provided at the lower end of the second connecting rod 62 and a second mounting plate 66 may be provided at the upper end of the third connecting rod 64. A spring 63 is connected between the first mounting plate 65 and the second mounting plate 66. This allows a plurality of springs 63 to be arranged parallel to each other between the first mounting plate 65 and the second mounting plate 66 to form a spring group. The spring set can have high axial deformation rigidity.

In addition, a damper 5 extending in the transverse direction may be further disposed between the first connecting rod 61 and the sidewall of the tower 9, and two ends of the damper 5 are hinged to the first connecting rod 61 and the tower 9, respectively. In the embodiment shown in FIG. 19, damper 5 extends substantially horizontally and is thereby attached to the side wall of tower 9. In the embodiment shown in fig. 20, the damper 5 has a component of inclination in the longitudinal direction and is therefore connected to the bottom wall 92 of the tower 9.

In addition, in the embodiment shown in fig. 19, the damper 5 is directly connected to the first connecting rod 61. In the embodiment shown in fig. 20, a transversely extending plate is mounted on the first connecting rod 61, and the damper 5 is connected to the first connecting rod 61 by being hinged to the transversely extending plate.

Preferably, a plurality of dampers 5 may be provided. For example, 2 dampers 5 are provided in fig. 19. The extending directions of the two dampers 5 in the lateral direction are perpendicular to each other. By this arrangement, it is more advantageous to adjust the relative swinging relationship between the apparatus 100 and the tower 9. In addition, as shown in fig. 20, 3 dampers 5 may be provided. The three dampers 5 are arranged 120 deg. apart from each other. This inclined arrangement of the 3 dampers in fig. 20 is further advantageous for adjusting the frequency of the swing of the weight assembly 3.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A tuned mass damping device comprising:

a link extending along a longitudinal direction;

a weight assembly connected at a lower end of the connecting rod; and

top coupling assembling, top coupling assembling connects between the upper end of connecting rod and the tower crossbeam of a tower section of thick bamboo to including preventing rotation mechanism, prevent rotation mechanism and include:

the first connecting part is fixedly connected with the tower beam;

the second connecting part is arranged below the first connecting part and fixedly connected with the upper end of the connecting rod;

the pair of connecting shaft rods are oppositely arranged at intervals, each of the pair of connecting shaft rods extends along the longitudinal direction, the lower ends of the connecting shaft rods are fixedly connected with the second connecting parts, and the upper ends of the connecting shaft rods are inserted into the first connecting parts and connected with the first connecting parts through connectors; and

the connector, the connector include with the overcoat piece that first connecting portion link to each other, the cover is established overcoat in the piece with the internal member that the connecting shaft pole links to each other, and set up and be in the internal member with middle elastic layer between the overcoat piece.

2. The tuned mass damping device according to claim 1, wherein the inner side of the outer sleeve and/or the outer side of the inner sleeve is configured as an arcuate surface, a middle portion of which protrudes radially outwards.

3. The tuned mass damping device according to claim 1 or 2, wherein first recessed portions are configured at the upper and lower edges of the intermediate resilient layer.

4. The tuned mass damping device according to any one of claims 1 to 3, wherein the top connection assembly further comprises an outer mounting sleeve through which the connector is connected to the first connection portion, the outer mounting sleeve being configured to be pre-swaged over the outer sleeve member so that the intermediate resilient layer of the connector is pre-compressed.

5. The tuned mass damping device according to claim 4, wherein a mounting slot is provided on the outer mounting sleeve for mating with the inner sleeve, and a thread for mating with the first connection.

6. The tuned mass damping device according to any one of claims 1 to 5, wherein the top connection assembly further comprises an inner mounting sleeve through which the connecting head is connected to the connecting shaft, the inner mounting sleeve being configured to be pre-swaged over the inner sleeve member so that the intermediate resilient layer of the connecting head is pre-compressed.

7. The tuned mass damping device according to claim 5, wherein said inner mounting sleeve is fixedly connected to said connecting shaft as a single piece.

8. The tuned mass damping device according to any of claims 1 to 7, wherein the connecting shaft is slidable in axial direction relative to the inner sleeve of the connecting head.

9. The tuned mass damping device according to claim 8, wherein a gap is provided between the connecting shaft and the inner sleeve of the connecting head, or a linear bearing or a body of wear-resistant material is provided.

10. The tuned mass damping device according to any one of claims 1 to 9, wherein a lifting hole is configured on the second connection portion, into which a lifting rod can be selectively inserted to fixedly connect the second connection portion with the tower beam.

11. The tuned mass damping device according to any one of claims 1 to 10, wherein the top connection assembly comprises a longitudinal load mechanism comprising:

the fixed connecting piece is fixedly connected with the tower beam and comprises an upward convex arc-shaped fixed joint surface;

the movable connecting piece is arranged above the fixed connecting piece and is spaced from the fixed connecting piece, the movable connecting piece is connected with the upper end of the connecting rod, and the movable connecting piece comprises a concave arc-shaped movable joint surface facing downwards; and

elastic connection spare, elastic connection spare sets up fixed connection spare with between the swing joint spare, elastic connection spare have with fixed connection spare's fixed composition face assorted curved lower surface, and with swing joint spare's activity composition face assorted curved upper surface.

12. The tuned mass damping device according to claim 11, wherein the curved fixing engagement surface has a flat part at the centre extending in a transverse direction, and/or

The arcuate movable engagement surface has a planar portion extending in a transverse direction at a center.

13. The tuned mass damping device according to claim 11 or 12, wherein a second recessed portion is provided at an edge of the resilient connecting element, the second recessed portion being configured to at least partially close when loaded in a longitudinal direction.

14. The tuned mass damping device according to any of claims 11 to 13, wherein a metal spacer is embedded in the resilient connecting element,

the metal partition extends throughout the elastic connection member, or

The metal separator is disposed only at the edge of the elastic connection member and does not extend to the center of the elastic connection member.

15. The tuned mass damping device according to any of claims 11 to 14, wherein the fixed connection corresponds to the first connection and the movable connection is fixedly connected to the second connection.

16. The tuned mass damping device according to any of claims 11 to 15, wherein the movable connection corresponds to the second connection.

17. The tuned mass damping device according to any one of claims 1 to 16, wherein the weight assembly comprises one weight unit, below which a collision mechanism is arranged, which collision mechanism is configured to correspond to a mating collision member mounted within the tower so as to be able to collide with each other.

18. The tuned mass damping device according to any one of claims 1 to 16, wherein the weight assembly comprises at least two weight units, which are spaced apart from each other in the longitudinal direction, wherein a collision mechanism is provided between two of the at least two weight units, which collision mechanism is configured to correspond to a mating collision member mounted within the tower so as to be able to collide with each other, wherein the at least two weight units are configured to be able to adjust the center of gravity of the tuned mass damping device at the collision mechanism.

19. The tuned mass damping device according to claim 17 or 18, wherein the crash mechanism comprises:

a collision body sleeved in the matching collision piece in an annular structure; and

a buffering elastic member connected between the collision body and a weight unit located above the collision body.

20. The tuned mass damping device according to claim 19, wherein said damping spring is configured as a cylindrical spring extending in a longitudinal direction.

21. The tuned mass damping device according to claim 19 or 20, wherein an elastic pad is arranged between the striker body and the mating striker body, the elastic pad being made of a softer metal or polymer material than the striker body.

22. The tuned mass damping device according to any of claims 17 to 21, wherein the weighting unit comprises a pallet extending in a transverse direction, and a weighting plate superposed on the pallet.

23. The tuned mass damping device according to any one of claims 1 to 22, further comprising a bottom spring assembly disposed below the weight assembly, the bottom spring assembly comprising a bottom spring extending in a longitudinal direction and connected between a bottom wall of the tower and the weight assembly.

24. The tuned mass damping device according to claim 23, wherein said bottom spring assembly further comprises:

a first connecting rod extending downward from the weight assembly in a longitudinal direction; and

the second connecting rod extends along the longitudinal direction, the upper end of the second connecting rod is hinged to the first connecting rod, and the lower end of the second connecting rod is connected with the bottom elastic part.

25. The tuned mass damping device according to claim 23 or 24, wherein the bottom spring assembly further comprises a third connecting rod connected between the bottom spring and the bottom wall of the tower, the third connecting rod being hingedly connected to the bottom wall of the tower.

26. The tuned mass damping device according to claim 25, further comprising a damper connected between the first connecting rod and the side wall of the tower, the damper extending in a transverse direction, both ends of the damper being hinged to the first connecting rod and the tower, respectively.

27. The tuned mass damping device according to claim 26, wherein the damper is hingedly connected at each end to the first connecting rod and the side wall of the tower.

28. The tuned mass damping device according to claim 27, wherein said two dampers are laterally spaced from each other by an angle of 90 °.

29. The tuned mass damping device according to claim 26, wherein the damper has an inclination in the longitudinal direction, and both ends of the damper are hinged to the first connecting rod and the bottom wall of the tower, respectively.

30. The tuned mass damping device according to any one of claims 1 to 29, wherein the linkage comprises:

a connecting mandrel connected between the top connection assembly and the weight assembly, the connecting mandrel being configured to be elongated to reduce its weight; and

an outer housing extending in a longitudinal direction to abut between the top connection assembly and the weight assembly, the outer housing surrounding the connection mandrel.