A pull rod support device

Abstract

The present invention belongs to the technical field of vibration reduction, and specifically relates to a tie rod support device. A tie rod support device includes an upper cover and a lower cover arranged in pairs, and a first through hole for a tie rod to pass through is provided at the central axis of the upper cover and the lower cover; a mandrel is axially slidably arranged between the upper cover and the lower cover, and a second through hole for a tie rod to pass through is provided at the central axis of the mandrel; rubber springs are provided between the mandrel and the upper cover and the lower cover, and a third through hole for a tie rod to pass through is provided at the central axis of the rubber springs; a cable nut is arranged on the tie rod, and the outer diameter of the cable nut is larger than the second through hole on the mandrel, so that the cable nut can abut against the end face of the mandrel, and the tie rod is configured such that its central axis can be inclined relative to the central axes of the upper cover and the lower cover within a limited angle range. The present invention can play a role in vibration reduction.

Description

Technical Field

[0001] The present invention belongs to the technical field of vibration damping, and specifically relates to a tie rod support 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 engine, tower and floating foundation of the unit for fixation. The cable device generally connects the main engine, tower and floating foundation of the unit through tie rods, which can increase the stability of the unit installation. However, due to the fact that the direction of external forces such as sea 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 tie rod support device, which can play a role in vibration damping.

[0004] According to the present invention, there is provided a tie rod support device, comprising:

[0005] A pair of upper and lower covers are provided, and a first through hole for the tie rod to pass through is provided at the central axis of the upper and lower covers;

[0006] A mandrel is axially slidably arranged between the upper and lower covers, and a second through hole for the tie rod to pass through is provided at the central axis of the mandrel;

[0007] Rubber springs are provided between the mandrel and the upper and lower covers, and a third through hole for the tie rod to pass through is provided at the central axis of the rubber springs;

[0008] A cable nut is provided on the tie rod, and the outer diameter of the cable nut is larger than the second through hole on the mandrel, so that the cable nut can abut against the end face of the mandrel, and the tie rod is configured such that its central axis can be inclined within a limited angle range relative to the central axes of the upper and lower covers.

[0009] In a specific embodiment, the contact surfaces of the rubber springs with the upper cover, the lower cover and the mandrel are all spherical surfaces.

[0010] In a specific embodiment, a sleeve is coaxially arranged between the joints of the upper and lower covers.

[0011] In a specific embodiment, limiting steps are provided at the upper and lower end faces of the sleeve, which are respectively matched with the upper and lower covers.

[0012] In a specific embodiment, the diameter of the mandrel is smaller than the inner diameter of the sleeve. When the mandrel is tilted to the maximum defined angle, the mandrel is in rigid contact with the sleeve, thereby controlling the tilt angle of the pull rod.

[0013] In a specific embodiment, when the upper cover, the sleeve and the lower cover are fitted together, the rubber spring is in a compressed state.

[0014] In a specific embodiment, grooves are provided on both the radial inner and outer sides of the rubber spring.

[0015] In a specific embodiment, a transfer plate for connecting with an object to be connected is fixedly provided at the bottom of the lower cover.

[0016] In a specific embodiment, the rubber spring includes a plurality of rubber segments uniformly arranged in the circumferential direction.

[0017] In a specific embodiment, the outer diameter of the cable nut is smaller than the aperture of the first through hole of the upper cover. When the pull rod is tilted to the maximum defined angle, the cable nut is in rigid contact with the hole wall of the first through hole.

[0018] Compared with the prior art, the advantages of the present application are as follows.

[0019] In the present invention, rubber springs are provided at the upper and lower ends of the mandrel. On the one hand, it can bear axial loads, and on the other hand, it can provide the function of axial vibration damping. In addition, when the pull rod of the present invention bears an eccentric load and tilts at an angle, the pull rod drives the mandrel to squeeze the rubber spring, causing the rubber spring to deform, thereby reducing the bending moment load of the pull rod. At the same time, there is a limit to the deflection angle of the pull rod, thereby realizing the connection and fixing function of the present invention for the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described below with reference to the accompanying drawings.

[0021] Figure 1 Shows an external structural schematic diagram of an embodiment of a pull rod support device according to the present invention;

[0022] Figure 2 Shows an internal structural schematic diagram of an embodiment of a pull rod support device according to the present invention;

[0023] Figure 3 Shows a schematic diagram of the natural state of a pull rod support device according to the present invention;

[0024] Figure 4 Shows a schematic diagram of the pre-tightened state of a pull rod support device according to the present invention;

[0025] Figure 5Shows a schematic structural diagram of a sleeve according to the present invention;

[0026] Figure 6 Shows a schematic diagram of the inclination of a pull rod of a pull rod support device according to the present invention;

[0027] Figure 7 Shows a schematic diagram of an embodiment of a rubber spring according to the present invention.

[0028] In the figure: 1. Upper cover; 11. First through hole; 2. Lower cover; 3. Pull rod; 4. Rubber spring; 41. Third through hole; 42. Groove; 43. Rubber section; 5. Mandrel; 51. Second through hole; 6. Cable nut; 7. Sleeve; 8. Adapter plate; 81. Fourth through hole; 91. First bolt; 92. Second bolt; 93. Third bolt; 10. Engine nacelle housing; 100. Pull rod support device.

[0029] In this application, all the drawings are schematic drawings, only used to illustrate the principle of the present invention, and are not drawn according to the actual scale. Detailed implementation manners

[0030] The present invention will be introduced below with reference to the drawings.

[0031] 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 drawings. They do not limit the absolute positions of the components involved, but can vary according to specific situations.

[0032] Figure 1 Shows the external structure of the pull rod support device 100 according to the present invention, Figure 2 Shows the internal structure of the pull rod support device 100 according to the present invention. As Figure 1 and Figure 2 shown, the pull rod support device 100 includes an upper cover 1 and a lower cover 2 which are snap-fitted together, a mandrel 5 is movably arranged between the upper cover 1 and the lower cover 2, and rubber springs 4 are arranged between the mandrel 5 and the upper cover 1 and the lower cover 2 respectively.

[0033] In the pre-tightened state, the central axes of the upper cover 1, the lower cover 2, the mandrel 5, and the rubber spring 4 coincide. A first through-hole 11 is provided on the central axis of the upper cover 1 and the lower cover 2. A second through-hole 51 is provided on the central axis of the mandrel 5. A third through-hole 41 is provided on the central axis of the rubber spring 4. Among them, the aperture sizes of the first through-hole 11 and the third through-hole 41 are equal, and the aperture of the second through-hole 51 is smaller than the apertures of the first through-hole 11 and the third through-hole 41. A cable nut 6 is fixedly provided on the pull rod 3. The outer diameter of the cable nut 6 is smaller than the aperture of the first through-hole 11 and larger than the aperture of the second through-hole 51. After the pull rod 3 passes through the first through-hole 11, the second through-hole 51, and the third through-hole 41, the cable nut 6 cannot pass through the second through-hole 51 and thus abuts against the upper end face of the mandrel 5. With this setting, the pull rod 3 can withstand Figure 1 the downward tensile stress shown.

[0034] According to the present invention, the central axis of the pull rod 3 can be inclined relative to the central axis of the upper cover 1. Specifically, the pull rod 3 can be inclined relative to the upper cover 1 within a limited angle range. With this setting, when the pull rod 3 is subjected to an eccentric load, the pull rod 3 can adjust the force borne by the pull rod 3 to an axial force as much as possible through the angle inclination.

[0035] In a specific embodiment, the outer diameter of the pull rod 3 is equal to the aperture of the second through-hole 51 of the mandrel 5. That is, when the pull rod 3 is subjected to an eccentric load, the pull rod 3 will drive the mandrel 5 to incline its central axis relative to the central axes of the upper cover 1 and the lower cover 2. When the central axis of the pull rod 3 inclines relative to the central axes of the upper cover 1 and the lower cover 2 to the maximum limited angle, the edge of the mandrel 5 will come into rigid contact with the upper cover 1 or the lower cover 2, thereby preventing the pull rod 3 from further inclining and achieving the purpose of limiting the inclination angle of the pull rod 3.

[0036] As Figure 6 shown, in a preferred embodiment, a sleeve 7 is provided between the upper cover 1 and the lower cover 2. The central axis of the sleeve 7 coincides with the central axes of the upper cover 1 and the lower cover 2, and the outer diameter of the sleeve 7 is equal to the outer diameters of the upper cover 1 and the lower cover 2. As Figure 5 shown, limiting steps are provided at both the upper and lower ends of the inner diameter of the sleeve 7 for clamping the upper cover 1 and the lower cover 2 to prevent the central axes of the upper cover 1, the lower cover 2, and the sleeve 7 from shifting.

[0037] As Figure 3 and Figure 4As shown, in the natural state, that is, when the rubber spring 4 is not compressed, the sleeve 7 has a margin for vertical movement between the upper cover 1 and the lower cover 2. In the pre-tightening state, that is, after the upper cover 1, the sleeve 7 and the lower cover 2 are tightly combined, the rubber spring 4 is compressed, thereby realizing the pre-compression of the rubber spring 4. In this embodiment, by replacing the sleeves 7 with different lengths, different degrees of pre-tightening force can be applied to the rubber spring 4, and then the overall stiffness of the tie rod support device can be adjusted to meet the requirements of different loads.

[0038] In a specific embodiment, since the sleeve 7 is provided between the upper cover 1 and the lower cover 2, therefore, in the case where the sleeve 7 is provided, the tie rod 3 can be in rigid contact with the sleeve 7 through the core shaft 5 to control the maximum inclination limit angle of the tie rod 3. The core shaft 5 and the sleeve 7 are at the same height position. When the central axis of the tie rod 3 is inclined to the maximum limit angle relative to the central axes of the upper cover 1 and the lower cover 2, the edge of the core shaft 5 will be in rigid contact with the sleeve 7, so that the tie rod 3 cannot be further inclined, achieving the purpose of limiting the inclination angle of the tie rod 3. Specifically, the maximum limit angle of the tie rod 3 can be adjusted by adjusting the dimensional difference between the core shaft 5 and the sleeve 7 and the thickness of the core shaft 5.

[0039] In another specific embodiment, as Figure 6 shown, the cable nut 6 is cylindrical. When the lower end of the cable nut 6 contacts the upper end surface of the core shaft 5, the upper end surface of the cable nut 6 exceeds the upper end surface of the upper cover 1. The maximum inclination limit angle of the tie rod 3 can also be controlled by the rigid contact between the cable nut 6 and the hole wall of the first through hole 11 of the upper cover 1. That is, the outer diameter of the cable nut 6 is smaller than the hole diameters of the first through hole 11 and the third through hole 41, so that the cable nut 6 has a certain movement space. When the tie rod 3 is inclined to the maximum limit angle, the side surface of the cable nut 6 on the tie rod 3 will be in rigid contact with the hole wall of the first through hole 11, thereby restricting the further inclination of the tie rod 3.

[0040] In a preferred embodiment, as Figures 2 to 4As shown, the lower end face of the upper cover 1 and the upper end face of the lower cover 2 are respectively set as spherical surfaces that are concave upward and concave downward. The upper end face of the rubber spring 4 in contact with the upper cover 1 and the lower end face of the rubber spring 4 in contact with the lower cover 2 are respectively set as spherical surfaces with matching shapes. The upper end face and the lower end face of the core shaft 5 are respectively set as spherical surfaces that protrude upward and spherical surfaces that protrude downward. The lower end face of the rubber spring 4 in contact with the upper end face of the core shaft 5 and the upper end face of the rubber spring 4 in contact with the lower end face of the core shaft 5 are also respectively set as spherical surfaces with matching shapes. Through this setting, when the pull rod 3 bears an eccentric load and the central axis of the pull rod 3 is inclined relative to the upper cover 1, the spherical contact surfaces between the rubber spring 4, the upper cover 1, the lower cover 2, and the core shaft 5 are conducive to the deformation of the rubber spring 4. In addition, under this setting, the overall shape of the core shaft 5 is thick in the middle and thin around, and it is surrounded by the rubber spring 4. When the pull rod 3 is subjected to a radial force and the core shaft 5 vibrates radially, the rubber spring 4 can also play a shock-absorbing role. While reducing the amount of the rubber spring 4 used, it prevents the impact force on the core shaft 5 in the radial direction from being too large and causing damage to the parts.

[0041] In a specific embodiment, the parts of the upper and lower end faces of the core shaft 5 in contact with the rubber spring 4 are set as spherical surfaces, while the part in contact with the cable nut 6 is set as a flat surface, so as to facilitate the contact between the cable nut 6 and the core shaft 5.

[0042] In a specific embodiment, the rubber spring 4 is an integral structure and is made of a metal-rubber composite material, wherein the metal-rubber composite material is a prior art. As Figure 7 shown, in another specific embodiment, the rubber spring 4 includes a plurality of rubber segments 43, and the plurality of rubber segments 43 are evenly distributed in the circumferential direction and enclose a ring shape to form the rubber spring 4.

[0043] In a specific embodiment, grooves 42 are provided on both the inner and outer side walls of the rubber spring 4. In this embodiment, two grooves 42 are respectively provided on the inner and outer circles of the rubber spring 4, and the cross-sectional shape of the groove 42 is square. Through this setting, when the pull rod 3 is inclined relative to the upper cover 1 and the lower cover 2, during the process of the pull rod 3 driving the core shaft 5 to extrude the rubber spring 4, it is conducive to the deformation of the rubber spring 4.

[0044] In a specific embodiment, an adapter plate 8 is provided at the lower end of the lower cover 2. The adapter plate 8 is used to connect the equipment that needs to use the present invention. In this embodiment, taking the engine nacelle 10 as an example, the adapter plate 8 is fixedly connected to the engine nacelle 10 through the third bolt 93. Correspondingly, a fourth through hole 81 for passing through the pull rod 3 is provided at the central axis of the adapter plate 8.

[0045] It is easy to understand that the pull rod support device 100 of the present invention is used to connect two devices, wherein Figure 1 and Figure 2Figures 0 to 0 show the tie rod support device 100 connected to one of the devices, and the lower end of the tie rod 3 can be connected to another device in the same way. In this embodiment, the cable nut 6 is arranged on the tie rod 3 and contacts one end of the mandrel 5 close to the upper cover 1, so that the tie rod 3 can bear the tensile force. According to the present invention, a cable nut 6 can also be arranged on the tie rod 3 to contact one end of the mandrel 5 close to the lower cover 2 from below, so that the tie rod 3 can bear the thrust force.

[0046] In a specific embodiment, as Figure 2 shown, the upper cover 1, the sleeve 7 and the lower cover 2 are fixed by a plurality of first bolts 91 uniformly arranged in the circumferential direction. Specifically, holes for passing through the first bolts 91 are provided on the upper cover 1 and the sleeve 7, and threaded holes for connecting with the first bolts 91 are provided on the lower cover 2.

[0047] In a specific embodiment, a limiting step for clamping the nacelle housing 10 is provided at one end of the adapter plate 8 in contact with the nacelle housing 10, so as to prevent the adapter plate 8 from slipping relative to the nacelle housing 10 during operation. The adapter plate 8 is connected to the nacelle housing 10 by a third bolt 93. Specifically, the third bolt 93 is a countersunk head bolt to prevent interference with the connection between the lower cover 2 and the adapter plate 8.

[0048] In a specific embodiment, after the upper cover 1, the sleeve 7 and the lower cover 2 are fixed by the first bolts 91, they are then connected to the adapter plate 8 by the second bolts 92. Among them, the first bolts 91 and the second bolts 92 are alternately distributed at intervals in the circumferential direction, so that the structure of the present invention is stable and reliable.

[0049] 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 understood as indicating or implying relative importance or implicitly indicating 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 of" means two or more unless otherwise specifically defined.

[0050] In the present invention, unless otherwise clearly defined 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 circumstances.

[0051] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean 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 expressions 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 a suitable manner in any one or more embodiments or examples.

[0052] 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, those skilled in the art can still 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 pull rod support device, characterized in that, Comprising: A pair of upper covers (1) and lower covers (2) are provided. At the central axis of the upper cover (1) and the lower cover (2), a first through hole (11) for a pull rod (3) to pass through is provided. A mandrel (5) is axially slidably arranged between the upper cover (1) and the lower cover (2). At the central axis of the mandrel (5), a second through hole (51) for the pull rod (3) to pass through is provided. Rubber springs (4) are provided between the mandrel (5) and the upper cover (1) and the lower cover (2). At the central axis of the rubber spring (4), a third through hole (41) for the pull rod (3) to pass through is provided. A cable nut (6) is arranged on the pull rod (3). The outer diameter of the cable nut (6) is larger than the second through hole (51) on the mandrel (5), so that the cable nut (6) can abut against the end face of the mandrel (5). The pull rod (3) is configured such that its central axis can be inclined within a limited angle range relative to the central axes of the upper cover (1) and the lower cover (2). A sleeve (7) is coaxially arranged between the connection parts of the upper cover (1) and the lower cover (2). The diameter of the mandrel (5) is smaller than the inner diameter of the sleeve (7). When the mandrel (5) is inclined to the maximum limited angle, the mandrel (5) is in rigid contact with the sleeve (7), thereby controlling the inclination angle of the pull rod (3).

2. The pull rod support device according to claim 1, wherein The contact surfaces of the rubber spring (4) with the upper cover (1), the lower cover (2) and the mandrel (5) are all spherical surfaces.

3. The tie rod support device according to claim 1, characterized in that, Limit steps for cooperating with the upper cover (1) and the lower cover (2) respectively are provided at the upper and lower end faces of the sleeve (7).

4. The pull rod support device according to claim 1, characterized in that, When the upper cover (1), the sleeve (7) and the lower cover (2) are fitted together, the rubber spring (4) is in a compressed state.

5. The pull rod support device according to any one of claims 1 to 4, characterized in that, Grooves (42) are provided on both the radial inner and outer side surfaces of the rubber spring (4).

6. The tie rod support device according to any one of claims 1 to 4, characterized in that, A transfer plate (8) for connecting with an object to be connected is fixedly arranged at the bottom of the lower cover (2).

7. The tie rod support device according to any one of claims 1 to 4, characterized in that, The rubber spring (4) includes a plurality of rubber segments (43) uniformly arranged in the circumferential direction.

8. The tie rod support device according to any one of claims 1 to 4, characterized in that The outer diameter of the cable nut (6) is smaller than the aperture of the first through hole (11) of the upper cover (1). When the pull rod (3) is inclined to the maximum limited angle, the cable nut (6) is in rigid contact with the hole wall of the first through hole (11).

Images