Double-hole type submarine cable vibration reduction support

Abstract

The utility model 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 damping device is simple in structure and convenient to install, damping parameters are easy to adjust, simultaneous damping of a plurality of cables is achieved, the damping device has an overload protection function, and the damping requirements of 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] This utility model belongs to the field of military cable brackets, and in particular relates to a double-hole submarine cable vibration damping bracket. Background Technology

[0002] Existing submarine cables are typically installed by first welding or bolting cable trays high up on the wall, then laying the submarine cables on top of the trays. This installation structure is often inconvenient during actual cable construction and maintenance due to the high cable placement. Furthermore, existing cable trays are usually rectangular to ensure cable safety, requiring cables to pass through them for installation. This also makes later maintenance and cable additions difficult. Additionally, existing cables are generally directly mounted to the cable trays with steel clamps, offering poor vibration damping. This installation structure can also shorten the service life of the submarine in rough conditions. Moreover, existing submarine cables are susceptible to significant impacts and vibrations during submarine operation. Prolonged vibration can cause the cables to detach or loosen at the interfaces with electrical equipment, leading to poor contact and potential safety accidents. Additionally, most vibration-resistant cable trays are only suitable for cable laying; they cannot be used to secure cable conduits and therefore cannot provide vibration damping. Finally, submarines have very strict requirements for vibration and noise control. Vibration waves from submarine cables transmitted to the bulkheads can negatively impact the submarine's acoustic performance. Utility Model Content

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

[0004] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0005] A dual-hole submarine cable vibration damping bracket includes an outer frame, a rubber body, and a base plate. The rubber body includes a first central ring and a second central ring. The lateral distance between the geometric centers of the first and second central rings is greater than the sum of their radii. A transition support rib is fixedly provided between the first and second central rings. Support feet are provided on the outer walls of the first and second central rings. The base 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 base plate through the support feet and the transition support rib.

[0006] Furthermore, this utility model also includes welding feet; a folded edge is fixedly provided at the bottom of the outer frame; the outer frame is detachably connected to the base plate and welding feet through the folded edge.

[0007] Furthermore, the outer frame of this utility model adopts a flanged structure; the end of the support foot and the end of the transition support rib are fixedly placed inside the flange of the outer frame.

[0008] Furthermore, the upper parts of the first central ring and the second central ring in the rubber body of this utility model are respectively provided with slits.

[0009] Furthermore, the outer frame of this utility model is connected to the base plate and weld feet by bolts through folded edges.

[0010] Furthermore, the present invention has eight support feet, which are evenly distributed on the outer walls of the first central ring and the second central ring.

[0011] To evade sonar detection, submarines have extremely stringent requirements for vibration and noise control. Current research indicates that the vibration of submarine cables is also significant, as this vibration is transmitted to the bulkheads and affects the submarine's acoustic performance. This invention features a simple structure, easy installation, and readily adjustable vibration reduction parameters, simultaneously meeting the vibration reduction requirements in both the vertical and axial directions of the cable. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the descriptions below.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is the overall assembly drawing of this utility model;

[0015] Figure 3 This is a schematic diagram of the usage state of this utility model;

[0016] Figure 4 The curve showing the relationship between the 40N lateral test force and deformation of the test piece (I) of this utility model is shown.

[0017] Figure 5 The curve showing the relationship between 40N lateral test force and deformation for the test piece (II) of this utility model is shown.

[0018] Figure 6 The curve showing the relationship between the 40N lateral test force and deformation of the test piece (III) of this utility model is shown.

[0019] Figure 7 This is a test diagram of the vertical natural frequency of this utility model.

[0020] In the diagram: 1. Outer frame; 101. Folded edge; 102. Flanged edge; 2. Base plate; 3. Rubber body; 301. First central ring; 302. Second central ring; 4. Weld foot; 5. Transition support rib; 6. Support foot; 7. Cutout. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-7 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this utility model. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening 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 an intervening component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] See Figure 1 , 2 As shown in Figure 3, the double-hole submarine cable vibration damping bracket includes an outer frame 1, a rubber body 3, and a base plate 2. The rubber body 3 includes a first central ring and a second central ring. The lateral distance between the geometric centers of the first central ring and the second central ring is greater than the sum of the radii of the first central ring 301 and the second central ring 302. A transition support rib is fixedly provided between the first central ring 301 and the second central ring 302. Support feet 6 are provided on the outer walls of the first central ring 301 and the second central ring 302. The base 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 base plate 2 through the support feet 6 and the transition support rib 5. This utility model also includes a welding foot 4. A folded edge 101 is fixedly provided at the bottom of the outer frame 1. The outer frame 1 is detachably connected to the base plate 2 and the welding foot 4 through the folded edge 101. The outer frame 1 of this utility model adopts a flanged structure. The ends of the support feet and the ends of the transition support ribs are fixedly placed inside the flanged edge 102 of the outer frame 1. The rubber body 3 of this invention has slits on the upper parts of the first central ring and the second central ring. The outer frame 1 of this invention is connected to the base plate 2 and the welding feet 4 by bolts through the folded edge 101. There are 8 support feet 6, which are evenly distributed on the outer walls of the first central ring 301 and the second central ring 302.

[0023] In practical use, the cables of this invention pass through the first central ring 301 and the second central ring 302 in the rubber body 3, and are arranged in multiple ways along the cable axis to achieve vibration reduction. This structure can accommodate two cables. The rubber body 3 of this invention can well 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 axial vibration reduction requirements of the cable through the preload provided by the interference fit between the rubber hole and the cable.

[0024] The outer frame 1 of this utility model adopts a flanged structure to ensure the stable position of the rubber body 3 in three directions and connects with the base plate 2 to jointly constrain the rubber. Simultaneously, the flanged structure has an overload protection function; when the cable bears a large load, it contacts the flange, preventing movement and avoiding damage to the rubber body 3 due to excessive deformation. The bottom flange 101 of the outer frame 1 is connected to the base plate 2 and welding feet 4 by bolts. The upper parts of the first central ring 301 and the second central ring 302 in the rubber body 3 of this utility model are respectively provided with cutouts 7 for placing cables, thus satisfying the bottom-to-top assembly sequence and facilitating installation. The configuration of the rubber body 3 is used to meet the vibration damping stiffness requirements. Different configurations can meet the vibration damping requirements of cables of different masses. Furthermore, with the help of finite element optimization, its configuration can be optimized for easy implementation. The entire utility model is welded to the bottom plane via welding feet 4, making installation convenient and the overall structure relatively stable. This utility model occupies little space, which is important given the strict space requirements of its installation environment; therefore, this structure satisfies the vibration damping function of cables in a submarine within a confined space. This utility model has an overload protection function. When the cable is subjected to a large inertial force, it prevents further displacement and avoids damage to the rubber due to excessive compression. See also Figures 4-6 Under a rated load of 40N, the deformations of test pieces I, II, and III were 1.825mm, 1.937mm, and 1.978mm, respectively, which meet the requirement of 2±0.2mm.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-hole submarine cable vibration damping bracket, characterized in that, The system includes an outer frame (1), a rubber body (3), and a base plate (2). The rubber body (3) includes a first central ring (301) and a second central ring (302). The lateral distance between the geometric centers of the first central ring (301) and the second central ring (302) is greater than the sum of the radii of the first central ring (301) and the second central ring (302). A transition support rib (5) is fixedly provided between the first central ring (301) and the second central ring (302). Support feet (6) are provided on the outer walls of the first central ring (301) and the second central ring (302). The base 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 base plate (2) through the support feet (6) and the transition support rib (5).

2. The dual-hole submarine cable vibration damping bracket according to claim 1, characterized in that: It is also provided with welding feet (4); a folded edge (101) is fixedly provided at the bottom of the outer frame (1); the outer frame (1) is detachably connected to the base plate (2) and welding feet (4) through the folded edge (101).

3. The dual-hole submarine cable vibration damping bracket according to claim 2, characterized in that: The outer frame (1) adopts a flanged structure; the ends of the support feet (6) and the transition support ribs are fixedly placed inside the flange of the outer frame (1).

4. The dual-hole submarine cable vibration damping bracket according to claim 3, characterized in that: The upper parts of the first central ring (301) and the second central ring (302) in the rubber body (3) are respectively provided with cuts (7).

5. The dual-hole submarine cable vibration damping bracket according to claim 2, characterized in that: The outer frame (1) is connected to the base plate (2) and the weld foot (4) by bolts through the folded edge (101).

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

Images