A flexible connection device

Abstract

The present invention belongs to the technical field of vibration damping, and specifically relates to a flexible connection device. The flexible connection device is connected to the equipment to be connected, and includes an upper seat and a lower seat which are buckled with each other. An upper rubber layer and a lower rubber layer are respectively fixedly arranged on the inner walls of the upper seat and the lower seat. An upper plate is fixedly arranged on the side of the upper rubber layer away from the upper seat, and a lower plate is fixedly arranged on the side of the lower rubber layer away from the lower seat. Among them, after the upper seat and the lower seat are buckled and installed, the upper plate and the lower plate are connected to each other and apply a pre-tightening force to the upper rubber layer and the lower rubber layer. Through holes for passing through the cable rod bodies are arranged along the axial direction on the upper seat, the upper rubber layer, the upper plate, the lower plate, the lower rubber layer and the lower seat. A cable nut capable of abutting against the upper plate is arranged on the cable rod body, and the cable rod body is configured to be able to tilt within a limited angle range relative to the upper seat and the lower seat. The present invention can play a role in vibration damping.

Description

Technical Field

[0001] The present invention belongs to the technical field of vibration damping, and specifically relates to a flexible connection device. Background Art

[0002] With the development of offshore wind power, the application of deep-sea floating units is becoming more and more widespread. As the power of the unit increases, the weight of the unit is also continuously increasing. A cable device needs to be installed between the main unit of the unit, the tower and the floating foundation for fixation. The cable device generally connects the main unit of the unit, the tower and the floating foundation to each other through a pull rod, which can increase the stability of the unit installation. However, due to the fact that the direction of external forces such as sea winds and waves changes at any time, the existing cable device cannot adapt to the external force changes in multiple directions, and the service life of the cable device will be greatly reduced due to factors such as vibration. Summary of the Invention

[0003] Aiming at the above-mentioned technical problems, the present invention aims to propose a flexible connection device, which can play a role in vibration damping.

[0004] According to the present invention, there is provided a flexible connection device, which is connected to the device to be connected, including an upper seat and a lower seat that are snap-fitted with each other. An upper rubber layer and a lower rubber layer are respectively fixedly provided on the inner walls of the upper seat and the lower seat. An upper plate is fixedly provided on the side of the upper rubber layer away from the upper seat, and a lower plate is fixedly provided on the side of the lower rubber layer away from the lower seat. Wherein, after the upper seat and the lower seat are snap-fitted and installed, the upper plate and the lower plate are connected to each other and apply a pre-tightening force to the upper rubber layer and the lower rubber layer. Through holes for passing a cable rod body are provided in the upper seat, the upper rubber layer, the upper plate, the lower plate, the lower rubber layer and the lower seat along the axial direction. A cable nut capable of abutting against the upper plate is provided on the cable rod body, and the cable rod body is configured to be able to tilt within a limited angle range relative to the upper seat and the lower seat.

[0005] In a specific embodiment, the upper plate and the lower plate are connected to each other by an axially inserted connection method.

[0006] In a specific embodiment, a positioning groove is provided on the upper plate, and a positioning protrusion for cooperating with the positioning groove is provided on the lower plate.

[0007] In a specific embodiment, the outer diameter of the cable nut is smaller than the through hole of the upper seat. When the cable rod body tilts relative to the upper seat to reach the limited angle, the cable nut is in rigid contact with the upper seat.

[0008] In a specific embodiment, the side of the upper plate facing the upper rubber layer is set to be arc-shaped, and the side of the lower plate facing the lower rubber layer is set to be arc-shaped.

[0009] In a specific embodiment, the upper rubber layer and the lower rubber layer respectively radially surround the upper plate and the lower plate.

[0010] In a specific embodiment, grooves are provided on both the inner and outer circles of the upper rubber layer and the lower rubber layer.

[0011] In a specific embodiment, a sleeve is provided between the upper seat and the lower seat.

[0012] In a specific embodiment, the sides of the upper seat and the lower seat close to the sleeve are provided as cylindrical surfaces.

[0013] In a specific embodiment, an adapter plate is provided on the side of the lower seat away from the upper seat.

[0014] Compared with the prior art, the advantages of the present application are as follows.

[0015] The cable rod body of the present invention abuts against the upper plate through the cable nut provided thereon to achieve the purpose of connection. At the same time, an upper rubber layer and a lower rubber layer are respectively provided on the upper and lower sides of the upper plate and the lower plate, thereby providing a vibration damping function for the cable rod body. In addition, the cable rod body of the present invention can tilt at an angle when bearing an eccentric load, thereby reducing the bending moment load of the cable rod body. Description of the Drawings

[0016] The present invention will be described below with reference to the drawings.

[0017] Figure 1 Shows a schematic diagram of an embodiment of a flexible connection device according to the present invention;

[0018] Figure 2 Shows a schematic diagram of the structure of the cable rod body of the flexible connection device according to the present invention when tilted;

[0019] Figure 3 Shows a schematic diagram of another embodiment of the flexible connection device according to the present invention.

[0020] In the figure: 11, upper seat; 12, upper rubber layer; 13, upper plate; 14, positioning groove; 21, lower seat; 22, lower rubber layer; 23, lower plate; 24, positioning protrusion; 3, cable rod body; 4, cable nut; 5, sleeve; 6, adapter plate; 10, nacelle housing; 100, flexible connection device.

[0021] In the present application, all the drawings are schematic drawings, only used to illustrate the principle of the present invention and not drawn to actual scale. Detailed Description of the Embodiment

[0022] The present invention will be introduced below with reference to the accompanying drawings.

[0023] It should be noted that the directional terms or qualifiers such as "upper" and "lower" used in this application are all with reference to the accompanying drawings. They do not limit the absolute positions of the components involved, but can vary according to specific circumstances.

[0024] Figure 1 Shows the structure of the flexible connection device 100 according to the present invention. As Figure 1 shown, the flexible connection device 100 includes an upper seat 11 and a lower seat 21 which are buckled with each other. The inner cavity parts of the upper seat 11 and the lower seat 21 have the same structure. A plurality of axially penetrating bolts are arranged along the circumferential direction of the upper seat 11 and the lower seat 21 for fixing the upper seat 11 and the lower seat 21. Further, the flexible connection device 100 is used to connect two devices that need to be connected to each other. In this embodiment, taking the nacelle cover 10 as an example, the bolts penetrating through the upper seat 11 and the lower seat 21 extend into the interior of the nacelle cover 10, thereby connecting the flexible connection device 100 with the nacelle cover 10.

[0025] It is easy to understand that the nacelle cover 10 is the housing of a common device in an existing offshore wind turbine, which is not the technical key point of the present invention and will not be elaborated here.

[0026] An upper rubber layer 12 and a lower rubber layer 22 are respectively fixedly arranged on the inner walls of the upper seat 11 and the lower seat 21. Specifically, in this embodiment, the upper rubber layer 12 and the lower rubber layer 22 are fixedly connected to the upper seat 11 and the lower seat 21 respectively by vulcanization. An upper plate 13 is fixedly arranged on the side of the upper rubber layer 12 away from the upper seat 11, and a lower plate 23 is fixedly arranged on the side of the lower rubber layer 22 away from the lower seat 21. Specifically, in this embodiment, the upper rubber layer 12 and the lower rubber layer 22 are fixedly connected to the upper plate 13 and the lower plate 23 respectively by vulcanization.

[0027] In a specific embodiment, after the upper seat 11 and the lower seat 21 are buckled and installed, the upper plate 13 and the lower plate 23 are connected to each other. Specifically, the upper plate 13 and the lower plate 23 are connected to each other by plugging, thereby preventing the upper plate 13 and the lower plate 23 from slipping during the installation process. After the upper seat 11 and the lower seat 21 are tightly installed, a pre-tightening force will be applied to the upper rubber layer 12 and the lower rubber layer 22 under the joint action of the upper plate 13 and the lower plate 23, that is, at this time, the upper rubber layer 12 and the lower rubber layer 22 are in a compressed state.

[0028] According to the present invention, a cable rod body 3 with a cable nut 4 needs to be penetrated through the upper seat 11, the upper rubber layer 12, the upper plate 13, the lower plate 23, the lower rubber layer 22 and the lower seat 21. Figure 1Only the connection structure of one end of the cable rod 3 and the nacelle housing 10 is shown. The other end of the cable rod 3 can be connected to another nacelle housing 10 using the same connection structure. Therefore, through holes for passing the cable rod 3 are provided along the axial direction on the upper seat 11, the upper rubber layer 12, the upper plate 13, the lower plate 23, the lower rubber layer 22, and the lower seat 21. A cable nut 4 capable of abutting against the upper plate 13 is provided on the cable rod 3. The cable nut 4 can abut against the upper plate 13, so that the cable rod 3 can bear tensile force.

[0029] According to the present invention, a cable nut 4 (not shown in the figure) can also be provided on the cable rod 3, which is located below the lower plate 23 and abuts against the lower plate 23. In this setting, the two cable nuts 4 are respectively provided above the upper plate 13 and below the lower plate 23, so that the cable rod 3 can bear both tensile force and thrust.

[0030] As Figure 2 shown, the cable rod 3 is configured to be able to tilt within a limited angle range relative to the upper seat 11 and the lower seat 21. Specifically, the outer diameter of the cable nut 4 is smaller than the through hole of the upper seat 11, so that there is a certain tilting space for the cable nut 4. When the cable rod 3 bears an eccentric load and tilts at an angle, the cable nut 4 can tilt at an angle following the cable rod 3. When the side surface of the cable nut 4 is in rigid contact with the hole wall of the through hole of the upper seat 11, the cable rod 3 reaches the maximum limited angle. In this setting, when the cable rod 3 bears an eccentric load, on the one hand, the bending moment load of the cable rod 3 can be reduced through the deformation of the rubber layer. On the other hand, the eccentric load can be adjusted to an axial load as much as possible. At the same time, by setting the maximum limited angle, the cable rod 3 can only tilt within the limited angle range, thereby ensuring the most basic limit connection function of the cable rod 3.

[0031] In a specific embodiment, the diameter of the cable rod 3 just matches the size of the through holes of the upper plate 13 and the lower plate 23, that is, when the cable rod 3 bears an eccentric load and tilts at an angle, the upper plate 13 and the lower plate 23 will squeeze the upper rubber layer 12 and the lower rubber layer 22 under the drive of the cable rod 3.

[0032] According to the present invention, the upper plate 13 and the lower plate 23 are connected to each other by axial plugging. As Figure 1 shown, a positioning groove 14 is provided on the surface of the upper plate 13 facing the lower plate 23, that is, the lower end surface of the upper plate 13. A positioning protrusion 24 is provided on the surface of the lower plate 23 facing the upper plate 13, that is, the upper end surface of the lower plate 23. In this embodiment, the positioning protrusion 24 is provided in a ring shape with a rectangular cross section. The positioning groove 14 is also in a ring shape with a rectangular cross section. When the upper plate 13 and the lower plate 23 are in contact, the positioning protrusion 24 can be plugged into the positioning groove 14 to achieve radial limit, thereby preventing radial slip between the upper plate 13 and the lower plate 23.

[0033] As Figure 1 and Figure 2 shown, one side of the upper plate 13 facing the upper rubber layer 12 is set to be arc-shaped, and one side of the lower plate 23 facing the lower rubber layer 22 is set to be arc-shaped. The upper rubber layer 12 and the lower rubber layer 22 respectively radially surround the upper plate 13 and the lower plate 23. Correspondingly, one side of the upper seat 11 and the lower seat 21 in contact with the upper rubber layer 12 and the lower rubber layer 22 is set to be arc-shaped, so that both the upper and lower sides of the upper rubber layer 12 and the lower rubber layer 22 can be closely attached. In this setting, when the cable rod body 3 is subjected to a radial force and drives the upper plate 13 and the lower plate 23 to move radially, the upper rubber layer 12 and the lower rubber layer 22 can play a vibration damping and protection role on the upper plate 13 and the lower plate 23 radially, preventing the upper plate 13 and the lower plate 23 from being damaged due to impact.

[0034] According to the present invention, grooves are provided on both the inner circle and the outer circle of the upper rubber layer 12 and the lower rubber layer 22. When the upper rubber layer 12 and the lower rubber layer 22 are compressed and deformed, the ends perpendicular to the extrusion direction will protrude outward due to extrusion. Therefore, this setting in this embodiment can enable the upper rubber layer 12 and the lower rubber layer 22 to have sufficient deformation space during the compression process, thereby improving the vibration damping effect of the upper rubber layer 12 and the lower rubber layer 22.

[0035] According to the present invention, a sleeve 5 can be provided between the upper seat 11 and the lower seat 21. The sleeve 5 is coaxially arranged with the upper seat 11 and the lower seat 21, and the outer diameter of the sleeve 5 is equal to the outer diameters of the upper seat 11 and the lower seat 21. Through this setting, the installation distance between the upper seat 11 and the lower seat 21 can be adjusted by replacing sleeves 5 with different heights. Since the upper seat 11 and the lower seat 21 will generate a pre-tightening force on the upper rubber layer 12 and the lower rubber layer 22 after installation, replacing sleeves 5 with different heights can adjust the pre-tightening force received by the upper rubber layer 12 and the lower rubber layer 22, thereby adjusting the overall stiffness of the flexible connection device 100.

[0036] In another specific embodiment, as Figure 3As shown, a flat surface is provided in the middle of the top end face of the upper plate 13 for abutting against the cable nut 4, and the periphery of the top end face is provided as an arc surface for connecting with the upper seat 11 through the upper rubber layer 12. At the same time, a cylindrical surface is still reserved in the radial direction of the upper plate 13. The structure of the lower plate 23 is similar to that of the upper plate 13 and will not be elaborated here. Through this setting, the sleeve 5 can not only be used to adjust the pre-tightening force of the upper rubber layer 12. When the cable rod body 3 bears an eccentric load and tilts at an angle, it drives the upper plate 13 and the lower plate 23 to tilt together. When the upper plate 13 or the lower plate 23 comes into rigid contact with the sleeve 5, the tilting angle of the cable rod body 3 reaches the maximum limit angle. In this embodiment, when the tilting angle of the cable rod body 3 reaches the maximum limit angle, the upper plate 13 or the lower plate 23 comes into rigid contact with the sleeve 5, and at the same time, the cable nut 4 comes into rigid contact with the hole wall of the through hole of the upper seat 11, and the two act simultaneously to enhance the firmness and reliability.

[0037] In a preferred embodiment, a transition plate 6 is provided on the side of the lower seat 21 away from the upper seat 11. As Figure 1 shown, the upper end of the transition plate 6 is provided as a flat surface that fits the shape of the lower seat 21 and is fixedly connected to each other. The lower end of the transition plate 6 is provided with a step that matches the hole on the nacelle housing 10. The transition plate 6 is limited by this step with the nacelle housing 10, which is convenient for using bolts to fixedly install the transition plate 6 and the nacelle housing 10, and at the same time prevents the flexible connection device 100 from moving relative to the nacelle housing 10.

[0038] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Finally, it should be noted that the above are only the preferred implementation schemes of the present invention and do not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the foregoing implementation schemes, for those skilled in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flexible connection device is connected to the device that needs to be connected, and is characterized in that, It includes an upper seat (11) and a lower seat (21) which are snap-fitted with each other. An upper rubber layer (12) and a lower rubber layer (22) are respectively fixedly arranged on the inner walls of the upper seat (11) and the lower seat (21). An upper plate (13) is fixedly arranged on one side of the upper rubber layer (12) away from the upper seat (11). A lower plate (23) is fixedly arranged on one side of the lower rubber layer (22) away from the lower seat (21). Among them, After the upper seat (11) and the lower seat (21) are snap-fitted and installed, the upper plate (13) and the lower plate (23) are connected to each other, and a pre-tightening force is applied to the upper rubber layer (12) and the lower rubber layer (22). Through holes for passing a cable rod body (3) are arranged in the upper seat (11), the upper rubber layer (12), the upper plate (13), the lower plate (23), the lower rubber layer (22) and the lower seat (21) along the axial direction. A cable nut (4) capable of abutting against the upper plate (13) is arranged on the cable rod body (3). The cable rod body (3) is configured to be able to tilt within a limited angle range relative to the upper seat (11) and the lower seat (21). The outer diameter of the cable nut (4) is smaller than the through hole of the upper seat (11). When the cable rod body (3) reaches the limited angle when tilting relative to the upper seat (11), the cable nut (4) is in rigid contact with the upper seat (11).

2. The flexible connection device according to claim 1, wherein, The upper plate (13) and the lower plate (23) are connected to each other by an axial plug-in manner.

3. The flexible connection device according to claim 2, wherein A positioning groove (14) is arranged on the upper plate (13), and a positioning protrusion (24) for cooperating with the positioning groove (14) is arranged on the lower plate (23).

4. The flexible connection device according to any one of claims 1 to 3, characterized in that One side of the upper plate (13) facing the upper rubber layer (12) is set to be arc-shaped, and one side of the lower plate (23) facing the lower rubber layer (22) is set to be arc-shaped.

5. The flexible connection device according to claim 4, characterized in that, The upper rubber layer (12) and the lower rubber layer (22) respectively radially surround the upper plate (13) and the lower plate (23).

6. The flexible connection device according to claim 5, wherein, Grooves are arranged on both the inner circle and the outer circle of the upper rubber layer (12) and the lower rubber layer (22).

7. The flexible connection device according to any one of claims 1 to 3, characterized in that, A sleeve (5) is arranged between the upper seat (11) and the lower seat (21).

8. The flexible connection device according to claim 7, characterized in that, One side of the upper seat (11) and the lower seat (21) close to the sleeve (5) is set to be a cylindrical surface.

9. The flexible connection device according to any one of claims 1 to 3, characterized in that, An adapter plate (6) is arranged on one side of the lower seat (21) away from the upper seat (11).

Images