CN115654073A

CN115654073A - Pull rod strutting arrangement

Info

Publication number: CN115654073A
Application number: CN202211354926.1A
Authority: CN
Inventors: 胡伟辉; 袁鹏飞; 杨超; 潘战; 陈聪聪; 秦中正; 李文斌; 王思宇; 张阅兵; 官权
Original assignee: Zhuzhou Times New Material Technology Co Ltd
Current assignee: Zhuzhou Times New Material Technology Co Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-01-31

Abstract

The invention belongs to the technical field of vibration reduction, and particularly relates to a pull rod supporting device. A pull rod supporting device comprises an upper cover and a lower cover which are arranged in pair, wherein first through holes for a pull rod to pass through are formed in the central core axes of the upper cover and the lower cover; the central core axis of the mandrel is provided with a second through hole for the pull rod to pass through; the rubber springs are arranged among the mandrel, the upper cover and the lower cover, and a third through hole for the pull rod to pass through is formed in the axis of the central core of each rubber spring; and a cable nut is arranged on the pull rod, 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 surface of the mandrel, and the pull rod is configured to enable the central core axis to incline relative to the central core axis of the upper cover and the lower cover within a limited angle range. The invention can play a role in vibration reduction.

Description

Pull rod supporting device

Technical Field

The invention belongs to the technical field of vibration reduction, and particularly relates to a pull rod supporting device.

Background

With the development of offshore wind power, the application of deep-sea floating units is more and more extensive. Along with the increase of the power of the unit, the weight of the unit is also increased continuously, the guy cable device needs to be installed among the unit main machine, the tower frame and the floating foundation for fixing, the guy cable device generally connects the unit main machine, the tower frame and the floating foundation through the pull rod, and the installation stability of the unit can be increased. However, because the direction of the external force such as sea storms changes at any time, the existing guy cable device cannot adapt to the external force change in multiple directions, and the service life of the guy cable device is greatly reduced due to factors such as vibration.

Disclosure of Invention

In view of the above technical problems, the present invention is directed to a drawbar support device capable of performing a vibration damping function.

According to the present invention, there is provided a drawbar support device comprising:

the pull rod comprises an upper cover and a lower cover which are arranged in pair, wherein first through holes for the pull rod to pass through are formed in the central core axes of the upper cover and the lower cover;

the central core is provided with a first through hole for the pull rod to pass through;

the rubber springs are arranged among the mandrel, the upper cover and the lower cover, and a third through hole for the pull rod to pass through is formed in the axis of a central core of each rubber spring;

and a cable nut is arranged on the pull rod, 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 surface of the mandrel, and the pull rod is configured in a way that the central axis of the pull rod can be inclined relative to the central axis of the upper cover and the central axis of the lower cover within a limited angle range.

In a specific embodiment, the contact surfaces of the rubber spring, the upper cover, the lower cover and the mandrel are all spherical surfaces.

In a particular embodiment, a sleeve is coaxially disposed between the junction of the upper and lower covers.

In a specific embodiment, the upper end surface and the lower end surface of the sleeve are provided with limit steps which are respectively matched with the upper cover and the lower cover.

In a specific embodiment, the diameter of the mandrel is smaller than the inner diameter of the sleeve, and when the mandrel is inclined to a maximum limited angle, the mandrel is in rigid contact with the sleeve, so that the inclination angle of the pull rod is controlled.

In a specific embodiment, when the upper cover and the lower cover are jointed, the rubber spring is in a compressed state.

In a specific embodiment, grooves are provided at both the radially inner and outer side faces of the rubber spring.

In a specific embodiment, an adapter plate for connecting with an object to be connected is fixedly arranged at the bottom of the lower cover.

In a specific embodiment, the rubber spring comprises a plurality of rubber segments uniformly arranged in the circumferential direction.

In a specific embodiment, the outer diameter of the stay cable nut is smaller than the aperture of the first through hole of the upper cover, and when the pull rod is inclined to a maximum limited angle, the stay cable nut is in rigid contact with the aperture wall of the first through hole.

Compared with the prior art, the method has the following advantages.

According to the invention, the rubber springs are arranged at the upper end and the lower end of the mandrel, so that the axial load can be borne on one hand, and the function of axial vibration reduction can be provided on the other hand. In addition, when the pull rod bears deflection load and inclines at an angle, the pull rod drives the mandrel to extrude the rubber spring, so that the rubber spring deforms, and the bending moment load of the pull rod is reduced. Meanwhile, the deflection angle of the pull rod has a limit, so that the connecting and fixing function of the invention on the unit is realized.

Drawings

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

FIG. 1 is a schematic external view of an embodiment of a drawbar support arrangement according to the invention;

FIG. 2 is a schematic view showing the internal structure of an embodiment of the drawbar support device according to the present invention;

FIG. 3 is a schematic view showing the natural state of the drawbar support arrangement according to the invention;

FIG. 4 is a schematic view showing a pre-tensioned state of a drawbar support arrangement according to the present invention;

FIG. 5 shows a schematic structural view of a sleeve according to the present invention;

FIG. 6 shows a schematic view of the inclination of the tie rod support device according to the present invention;

fig. 7 shows a schematic view of an embodiment of a rubber spring according to the invention.

In the figure: 1. an upper cover; 11. a first through hole; 2. a lower cover; 3. a pull rod; 4. a rubber spring; 41. a third through hole; 42. a groove; 43. a rubber section; 5. a mandrel; 51. a second through hole; 6. a cable nut; 7. a sleeve; 8. a patch panel; 81. a fourth via hole; 91. a first bolt; 92. a second bolt; 93. a third bolt; 10. a nacelle cover; 100. a pull rod supporting device.

In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.

Detailed Description

The invention is described below with reference to the accompanying drawings.

It should be noted that the directional terms or limitations used in the present application, such as "upper" and "lower", refer to the drawings to which reference is made. They are not intended to limit the absolute positions of the parts involved, but may vary from case to case.

Fig. 1 shows an outer structure of a drawbar support device 100 according to the present invention, and fig. 2 shows an inner structure of the drawbar support device 100 according to the present invention. As shown in fig. 1 and 2, the pull rod supporting device 100 includes an upper cover 1 and a lower cover 2 that are fastened to each other, a mandrel 5 is movably disposed between the upper cover 1 and the lower cover 2, and a rubber spring 4 is disposed between the mandrel 5 and each of the upper cover 1 and the lower cover 2.

In a pre-tightening state, the central axes of the upper cover 1, the lower cover 2, the mandrel 5 and the rubber spring 4 are overlapped, a first through hole 11 is arranged at the central axes of the upper cover 1 and the lower cover 2, a second through hole 51 is arranged at the central axis of the mandrel 5, and a third through hole 41 is arranged at the central axis of the rubber spring 4. The first through hole 11 and the third through hole 41 have the same aperture, and the second through hole 51 has a smaller aperture than the first through hole 11 and the third through hole 41. The pull rod 3 is fixedly provided with a cable nut 6, and 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 draw bar 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 abuts on the upper end surface of the spindle 5. In this arrangement, the tie rod 3 can withstand the downward tensile stress shown in fig. 1.

According to the invention, the central axis of the tie rod 3 can be inclined with respect to the central axis of the upper cover 1. Specifically, the pull rod 3 can be inclined within a limited angular range with respect to the upper cover 1. With this arrangement, when the tie rod 3 is subjected to a yaw load, the tie rod 3 can adjust the force received by the tie rod 3 to the axial force as much as possible by the angular inclination.

In a particular embodiment, the outer diameter of the tie rod 3 is equal to the diameter of the second through hole 51 of the mandrel 5. That is, when the pull rod 3 bears a deflection load, the pull rod 3 drives the mandrel 5 to incline the central axis of the mandrel 5 to the central axis of the upper cover 1 and the lower cover 2, and when the central axis of the pull rod 3 inclines to a maximum limit angle relative to the central axis of the upper cover 1 and the lower cover 2, the edge of the mandrel 5 is in rigid contact with the upper cover 1 or the lower cover 2, so that the pull rod 3 cannot be further inclined, and the purpose of limiting the inclination angle of the pull rod 3 is achieved.

In a preferred embodiment, as shown in fig. 6, a sleeve 7 is provided between the upper cap 1 and the lower cap 2. The central axis of the sleeve 7 is coincident 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 diameter of the upper cover 1 and the lower cover 2. As shown in fig. 5, the upper and lower ends of the inner diameter of the sleeve 7 are provided with a limiting step for clamping the upper cover 1 and the lower cover 2 to prevent the central axis of the upper cover 1, the lower cover 2 and the sleeve 7 from deviating.

As shown in fig. 3 and 4, in a natural state, that is, when the rubber spring 4 is not compressed, the sleeve 7 has a margin for moving up and down between the upper cover 1 and the lower cover 2. In the pre-tensioned state, i.e., after the upper cap 1, the sleeve 7 and the lower cap 2 are tightly coupled, the rubber spring 4 is compressed, thereby achieving pre-compression of the rubber spring 4. In this embodiment, by replacing the sleeves 7 with different lengths, pretightening forces with different degrees can be applied to the rubber springs 4, so as to adjust the overall stiffness of the pull rod supporting device to meet the requirements of different loads.

In a particular embodiment, since the sleeve 7 is provided between the upper cover 1 and the lower cover 2, the maximum inclination of the pull rod 3 can be controlled to define an angle by the rigid contact of the mandrel 5 with the sleeve 7 in the case where the sleeve 7 is provided. The mandrel 5 and the sleeve 7 are at the same height position, when the central axis of the pull rod 3 inclines to the maximum limit angle relative to the central axes of the upper cover 1 and the lower cover 2, the edge of the mandrel 5 can be in rigid contact with the sleeve 7, so that the pull rod 3 cannot incline further, and the purpose of limiting the inclination angle of the pull rod 3 is achieved. In particular, the maximum limit angle of the tie rod 3 can be adjusted by adjusting the difference in size of the mandrel 5 and the sleeve 7 and the thickness of the mandrel 5.

In another specific embodiment, as shown in fig. 6, the cable nut 6 is cylindrical, when the lower end of the cable nut 6 contacts with the upper end face of the mandrel 5, the upper end face of the cable nut 6 exceeds the upper end face of the upper cover 1, and the maximum limit angle of inclination of the pull rod 3 can 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 diameters of the first through hole 11 and the third through hole 41, so that the cable nut 6 has a certain movement space, and when the pull rod 3 is tilted to a maximum limited angle, the side surface of the cable nut 6 on the pull rod 3 is in rigid contact with the hole wall of the first through hole 11, thereby limiting the further tilting of the pull rod 3.

In a preferred embodiment, as shown in fig. 2 to 4, the lower end surface of the upper cap 1 and the upper end surface of the lower cap 2 are respectively provided with an upwardly concave sphere and a downwardly concave sphere. The upper end surface of the rubber spring 4 contacting the upper cover 1 and the lower end surface of the rubber spring 4 contacting the lower cover 2 are respectively provided with a spherical shape with a matched shape. The upper end surface and the lower end surface of the mandrel 5 are respectively provided with an upward convex sphere and a downward convex sphere. The lower end surface of the rubber spring 4 in contact with the upper end surface of the core shaft 5 and the upper end surface of the rubber spring 4 in contact with the lower end surface of the core shaft 5 are similarly formed into spherical shapes with matching shapes. With this arrangement, when the tie rod 3 is subjected to a deflection load, the spherical contact surfaces between the rubber spring 4, the upper cap 1, the lower cap 2, and the core shaft 5 facilitate deformation of the rubber spring 4 when the center axis of the tie rod 3 is inclined with respect to the upper cap 1. In addition, under the arrangement, the whole mandrel 5 is thick in the middle and thin in the periphery and is surrounded by the rubber spring 4, when the pull rod 3 is subjected to radial force to enable the mandrel 5 to vibrate in the radial direction, the rubber spring 4 can also play a role in damping, the using amount of the rubber spring 4 is reduced, and meanwhile, the phenomenon that parts are damaged due to the fact that the impact force of the mandrel 5 in the radial direction is too large is avoided.

In a specific embodiment, the contact part of the upper and lower end surfaces of the spindle 5 with the rubber spring 4 is provided as a spherical surface, and the contact part with the cable nut 6 is provided as a flat surface, thereby facilitating the contact of the cable nut 6 with the spindle 5.

In a specific embodiment, the rubber spring 4 is a unitary structure made of a metal rubber composite material, wherein the metal rubber composite material is known in the art. In another specific embodiment, as shown in fig. 7, the rubber spring 4 includes a plurality of rubber segments 43, and the plurality of rubber segments 43 are uniformly distributed along the circumferential direction to form a circular ring shape, so as to form the rubber spring 4.

In one specific embodiment, the inner and outer sidewalls of the rubber spring 4 are each provided with a groove 42. In the present embodiment, two grooves 42 are provided in the inner ring and the outer ring of the rubber spring 4, respectively, and the sectional shape of the groove 42 is a square. Through the arrangement, when the pull rod 3 inclines relative to the upper cover 1 and the lower cover 2, the pull rod 3 drives the mandrel 5 to extrude the rubber spring 4, so that the deformation of the rubber spring 4 is facilitated.

In a particular embodiment, an adapter plate 8 is provided at the lower end of the lower cover 2. The adapter plate 8 is used for connecting the equipment which needs to use the invention, and in this embodiment, taking the cabin cover 10 as an example, the adapter plate 8 is fixedly connected with the cabin cover 10 through a third bolt 93. Correspondingly, a fourth through-hole 81 for passing through the tie rod 3 is provided at the center axis of the adapter plate 8.

It is easily understood that the drawbar support device 100 of the present invention is used for connecting two apparatuses, wherein fig. 1 and 2 show that the drawbar support device 100 is connected with one of the apparatuses, and can be connected with the other apparatus at the lower end of the drawbar 3 in the same manner. In this embodiment, the cable nut 6 is disposed on the pull rod 3 in contact with an end of the spindle 5 close to the upper cover 1, so that the pull rod 3 can bear a tensile force. According to the invention, a cable nut 6 can also be arranged on the pull rod 3, so that the cable nut is contacted with one end of the mandrel 5 close to the lower cover 2 from the lower part, and the pull rod 3 can bear the thrust.

In a specific embodiment, as shown in fig. 2, the upper cover 1, the sleeve 7 and the lower cover 2 are fixed by a plurality of first bolts 91 uniformly arranged in a circumferential direction. Specifically, holes for passing the first bolts 91 are provided in the upper cover 1 and the sleeve 7, and screw holes for connecting the first bolts 91 are provided in the lower cover 2.

In a particular embodiment, a stop step for blocking the nacelle cover 10 is provided at the end of the adapter plate 8 that is in contact with the nacelle cover 10, so that the adapter plate 8 is prevented from slipping relative to the nacelle cover 10 during operation. The adapter plate 8 is connected to the nacelle cover 10 by a third bolt 93, specifically, the third bolt 93 is a countersunk head bolt, which prevents interference in connection between the lower cover 2 and the adapter plate 8.

In a specific embodiment, the upper cover 1, the sleeve 7 and the lower cover 2 are fixed by the first bolts 91 and then connected to the adapter plate 8 by the second bolts 92. The first bolts 91 and the second bolts 92 are alternately distributed at intervals along the circumferential direction, so that the structure of the invention is stable and reliable.

In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are in fact significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present invention in any way. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tie bar support device, comprising:

the pull rod comprises an upper cover (1) and a lower cover (2) which are arranged in pairs, wherein first through holes (11) for the pull rod (3) to pass through are formed in the central axis of the upper cover (1) and the central axis of the lower cover (2);

the core shaft (5) is arranged between the upper cover (1) and the lower cover (2) in an axial sliding mode, and a second through hole (51) for the pull rod (3) to penetrate through is formed in the central axis of the core shaft (5);

the rubber spring (4) is arranged between the mandrel (5) and the upper cover (1) and between the mandrel and the lower cover (2), and a third through hole (41) for the pull rod (3) to pass through is formed in the central core axis of the rubber spring (4);

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), and the pull rod (3) is configured to enable the central axis to incline relative to the central axis of the upper cover (1) and the lower cover (2) within a limited angle range.

2. The draw-bar supporting device according to claim 1, characterized in that the contact surfaces of the rubber spring (4) with the upper cover (1), the lower cover (2) and the mandrel (5) are spherical.

3. The tie rod support device according to claim 2, characterized in that a sleeve (7) is coaxially arranged between the connection of the upper cover (1) and the lower cover (2).

4. The draw bar supporting device according to claim 3, wherein the upper end surface and the lower end surface of the sleeve (7) are provided with limiting steps which are respectively matched with the upper cover (1) and the lower cover (2).

5. A tie rod support device according to claim 3, wherein the diameter of the mandrel (5) is smaller than the inner diameter of the sleeve (7), the mandrel (5) being in rigid contact with the sleeve (7) when the mandrel (5) is tilted to a maximum defined angle, thereby controlling the tilt angle of the tie rod (3).

6. A tie rod supporting device according to claim 3, wherein the rubber spring (4) is in a compressed state when the upper cover (1) and the sleeve (7) and the lower cover (2) are engaged.

7. Pull rod supporting device according to any one of claims 1 to 6, characterized in that a recess (42) is provided at both the radially inner and outer side faces of the rubber spring (4).

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

9. A tie rod supporting device according to any one of claims 1-6, characterized in that the rubber spring (4) comprises a plurality of rubber segments (43) arranged evenly in the circumferential direction.

10. A tie rod support device according to any one of claims 1 to 4, wherein the outer diameter of the tie rod nut (6) is smaller than the bore diameter of the first through hole (11) of the upper cover (1), and when the tie rod (3) is tilted to a maximum defined angle, the tie rod nut (6) is in rigid contact with the bore wall of the first through hole (11).