Double-hole type submarine cable vibration reduction support

Abstract

The invention belongs to the field of military cable supports, and particularly relates to a double-hole type submarine cable vibration reduction support which comprises an outer frame (1), a rubber body (3) and a bottom plate (2). The rubber body (3) comprises a first central ring and a second central ring; the transverse distance between the geometric centers of the first center ring and the second center ring is larger than the sum of the radiuses of the first center ring and the second center ring. Transition supporting ribs are fixedly arranged between the first center ring and the second center ring. Supporting legs are arranged on the outer walls of the first central ring and the second central ring; the bottom plate (2) is connected with the bottom of the outer frame (1); and the rubber body (3) is fixedly connected with the inner wall of the outer frame (1) and the bottom plate (2) through supporting legs and transition supporting ribs. The cable vibration damper is simple in structure and convenient to install, vibration damping parameters are easy to adjust, simultaneous vibration damping of multiple cables is achieved, the overload protection function is achieved, and the requirements for vibration damping in the two directions in the vertical plane of the cables and the axial direction of the cables can be met at the same time.

Description

Technical Field

[0001] The invention belongs to the field of military cable brackets, and in particular relates to a double-hole submarine cable vibration reduction bracket. Background Art

[0002] The existing submarine cables usually use welding or bolts to fix the cable bracket at the high part of the wall, and then lay the submarine cable on the top of the cable bracket. Such an installation structure is usually inconvenient in actual cable construction and maintenance due to the high cable installation position. In addition, the existing cable bracket is usually a rectangular structure to ensure the safety of the cable. The cable needs to be installed through the cable bracket. Such an installation structure is also inconvenient for later maintenance and additional cables. In addition, the existing cables are generally directly installed on the cable bracket through steel hoops, and the shock absorption protection effect is not good. Such an installation structure will also affect the service life on a bumpy submarine. In addition, the existing submarine cables are susceptible to large impact and shaking during the submarine's driving. Long-term shaking can easily cause the submarine cable to fall off or loosen at the interface with the electrical equipment, resulting in poor contact and inducing safety accidents. At the same time, most seismic cable trays are only suitable for cable laying. The device cannot be used to fix the cable pipe and cannot have a shock absorption effect on the cable pipe. Secondly, the submarine has very strict requirements for vibration and noise. The vibration wave of the submarine cable is transmitted to the bulkhead, which will have a certain negative impact on the sound silence of the submarine. Summary of the invention

[0003] The present invention aims to overcome the shortcomings of the prior art and provide a double-hole submarine cable vibration reduction bracket which has a simple structure, is easy to install, is easy to adjust vibration reduction parameters, realizes simultaneous vibration reduction of multiple cables, has an overload protection function, and can simultaneously meet the vibration reduction requirements of the cables in two directions in the vertical plane and the axial direction of the cables.

[0004] To solve the above technical problems, the present invention is achieved as follows: A double-hole submarine cable vibration-damping bracket comprises an outer frame, a rubber body and a bottom plate; the rubber body comprises a first center ring and a second center ring; the lateral distance between the geometric centers of the first center ring and the second center ring is greater than the sum of the radii of the first center ring and the second center ring; transition support ribs are fixedly provided between the first center ring and the second center ring; support feet are provided on the outer walls of the first center ring and the second center ring; the bottom plate is connected to the bottom of the outer frame; the rubber body is fixedly connected to the inner wall of the outer frame and the bottom plate through the support feet and the transition support ribs.

[0005] Furthermore, the present invention is also provided with welding feet; a folding edge is fixedly provided at the bottom of the outer frame; and the outer frame is detachably connected to the bottom plate and the welding feet through the folding edge.

[0006] Furthermore, the outer frame of the present invention adopts a flange structure; the ends of the supporting legs and the ends of the transition supporting ribs are fixedly placed in the flange of the outer frame.

[0007] Furthermore, the first center ring and the second center ring in the rubber body of the present invention are respectively provided with cutouts on their upper parts.

[0008] Furthermore, the outer frame of the present invention is connected to the bottom plate and the welding feet through the folded edges via bolts.

[0009] Furthermore, the number of the supporting legs of the present invention is 8, which are evenly distributed on the outer walls of the first center ring and the second center ring.

[0010] In order to avoid sonar detection, submarines have very strict requirements on vibration and noise. It is currently found that the vibration of submarine cables cannot be ignored. Its vibration is transmitted to the bulkhead, which will affect the quietness of the submarine. The present invention has a simple structure, is easy to install, and is easy to adjust the vibration reduction parameters. It can also meet the vibration reduction requirements in two directions in the vertical plane of the cable and in the axial direction of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the present invention is not limited to the following description.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is the overall assembly diagram of the present invention; Figure 3 This is a schematic diagram of the use state of the present invention; Figure 4 The relationship curve between the 40N lateral test force and deformation of the test piece (I) of the present invention; Figure 5 The relationship curve between the 40N lateral test force and deformation of the test piece (II) of the present invention; Figure 6 The relationship curve between the 40N lateral test force and deformation of the test piece (III) of the present invention; Figure 7 This is a vertical natural frequency test diagram of the present invention.

[0013] In the figure: 1, outer frame; 101, folded edge; 102, flange; 2, bottom plate; 3, rubber body; 301, first center ring; 302, second center ring; 4, welding foot; 5, transition support rib; 6, support foot; 7, incision. DETAILED DESCRIPTION

[0014] The following is combined with Figures 1 to 7The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be a central component at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0015] See also Figure 1 , 2 As shown in Figure 3, a double-hole submarine cable vibration reduction bracket includes an outer frame 1, a rubber body 3 and a bottom plate 2; the rubber body 3 includes a first center ring and a second center ring; the lateral distance between the geometric centers of the first center ring and the second center ring is greater than the sum of the radii of the first center ring 301 and the second center ring 302; a transition support rib is fixedly arranged between the first center ring 301 and the second center ring 302; a support foot 6 is arranged on the outer wall of the first center ring 301 and the second center ring 302; the bottom plate 2 is connected to the bottom of the outer frame 1; the rubber body 3 is fixedly connected to the inner wall of the outer frame 1 and the bottom plate 2 through the support foot 6 and the transition support rib 5. The present invention also has a welding foot 4; a folding edge 101 is fixedly arranged at the bottom of the outer frame 1; the outer frame 1 is detachably connected to the bottom plate 2 and the welding foot 4 through the folding edge 101. The outer frame 1 of the present invention adopts a flange structure; the end of the support foot and the end of the transition support rib are fixedly placed in the flange 102 of the outer frame 1. The first center ring and the second center ring of the rubber body 2 of the present invention are respectively provided with cutouts on their upper parts. The outer frame 1 of the present invention is connected to the bottom plate 2 and the welding feet 4 by bolts through the folded edge 101. The number of the supporting feet 6 is 8, which are evenly distributed on the outer walls of the first center ring 301 and the second center ring 302.

[0016] In specific use, the cable of the present invention passes through the first center ring 301 and the second center ring 302 in the rubber body 3 respectively, and multiple cables are arranged along the axial direction of the cable to achieve the purpose of vibration reduction. This structure can accommodate two cables. The rubber body 3 of the present invention can better meet the requirements of vibration reduction stiffness and damping and has good wrapping properties. It can not only provide vibration reduction in two directions in the vertical plane, but also meet the vibration reduction requirements of the cable axial direction through the pre-tightening force provided by the interference fit between the rubber hole and the cable.

[0017] The outer frame 1 of the present invention adopts a flange structure to ensure the stable position of the rubber body 3 in three directions, and is connected with the bottom plate 2 to jointly constrain the rubber. At the same time, the flange structure has an overload protection function. When the cable is subjected to a large load, it contacts the flange to prevent it from moving, thereby preventing the rubber body 3 from being damaged due to excessive deformation. The bottom flange 101 of the outer frame 1 of the present invention is connected to the bottom plate 2 and the welding foot 4 by bolts. The first center ring 301 and the upper part of the second center ring 302 in the rubber body 3 of the present invention are respectively provided with cutouts 7 for placing cables, which satisfies the assembly sequence from bottom to top and facilitates the operation of the installer. The configuration of the rubber body 3 is adopted to meet the vibration reduction stiffness requirements. Different configurations can meet the vibration reduction requirements of cables of different qualities. At the same time, with the help of the optimization function of the finite element, its configuration can be optimized and conveniently implemented. The present invention is welded to the bottom plane by the welding foot 4 as a whole, which is easy to install and relatively stable as a whole. The present invention occupies a small space. Because its installation environment has strict requirements on space, the present structure satisfies the vibration reduction effect of the submarine on the cable in a small space. The present invention has an overload protection function. When the cable is subjected to a large inertial force, it is prevented from continuing to move, thereby preventing the rubber from being damaged due to excessive compression. Figures 4 to 6 ,Under the rated load of 40N, the deformations of test pieces I, II, and III were 1.825mm, 1.937mm, and 1.978mm, respectively, meeting the requirement of 2±0.2mm. Figure 7 This is a vertical natural frequency test diagram of the present invention.

[0018] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Double-hole submarine cable vibration reduction bracket, characterized in that: The invention comprises an outer frame (1), a rubber body (3) and a bottom plate (2); the rubber body (3) comprises a first center ring (301) and a second center ring (302); the lateral distance between the geometric centers of the first center ring (301) and the second center ring (302) is greater than the sum of the radii of the first center ring (301) and the second center ring (302); a transition support rib (5) is fixedly provided between the first center ring (301) and the second center ring (302); support feet (6) are provided on the outer walls of the first center ring (301) and the second center ring (302); the bottom plate (2) is connected to the bottom of the outer frame (1); and the rubber body (3) is fixedly connected to the inner wall of the outer frame (1) and the bottom plate (2) via the support feet (6) and the transition support rib (5).

2. The double-hole submarine cable vibration-damping bracket according to claim 1 is characterized in that: A welding foot (4) is also provided; a folded edge (101) is fixedly provided at the bottom of the outer frame (1); and the outer frame (1) is detachably connected to the bottom plate (2) and the welding foot (4) via the folded edge (101).

3. The double-hole submarine cable vibration-damping bracket according to claim 2 is characterized in that: The outer frame (1) adopts a flange structure; the ends of the support legs and the ends of the transition support ribs are fixedly placed in the flange of the outer frame (1).

4. The double-hole submarine cable vibration-damping bracket according to claim 3 is characterized in that: The first center ring (301) and the second center ring (302) in the rubber body (2) are respectively provided with cutouts (7) on their upper parts.

5. The double-hole submarine cable vibration-damping bracket according to claim 2 is characterized in that: The outer frame (1) is connected to the bottom plate (2) and the welding foot (4) via a folded edge (101) via bolts.

6. The double-hole submarine cable vibration-damping bracket according to any one of claims 1 to 5, characterized in that: The number of the supporting legs (6) is 8, which are evenly distributed on the outer walls of the first center ring (301) and the second center ring (302).

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