Cable anti-vibration device

Abstract

The utility model discloses a cable anti-vibration device, the cable anti-vibration device is equidistantly arranged on the outer layer of a cable, the whole cable is divided into a plurality of sections of small cable units, the anti-vibration device comprises an anti-vibration external member and a hoop assembly, the middle part of the anti-vibration external member is provided with an annular barrier strip, the anti-vibration external member is pasted and fastened on the periphery of the outer layer of the cable, and the hoop assembly is fixed on the outer layer of the cable. And the hoop assemblies are fastened on the shockproof external member in an embracing manner and are positioned on the two sides of the barrier strip. The device has the characteristics of compact structure, convenience in operation, stability, reliability and the like, axially limits the hoop assembly by utilizing the barrier strip arranged in the middle of the shockproof sleeve piece, and realizes that the axial displacement of each section of small cable unit is controlled within a certain range, so that the displacement accumulation of the whole cable in the axial direction is reduced, and the service life of the whole cable is prolonged. And the stress overrun of the insulating layer is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable anti-vibration, and particularly relates to a cable anti-vibration device. Background Art

[0002] For high-voltage large-section cables or tubular busbars, when a large current flows through, the vibration of the cable itself is inevitable, and the temperature difference change is also difficult to control. Especially for outdoor uneven cables, the axial displacement of the cable is more obvious. In order to avoid displacement caused by cable vibration or thermal expansion and contraction, fixing measures are often required. Generally, two upper and lower semi-circular metal clamps are used and fastened by bolts. The cable vibration is divided into six directions: front-back (axial), left-right in the horizontal direction, and up-down in the vertical direction. The metal clamp can effectively reduce the vibration and displacement of the cable in the up-down and left-right four directions, but it cannot prevent the vibration and displacement of the cable in the axial direction, and the axial displacement will accumulate continuously until the whole cable can no longer move. At this time, part of the cable will surely be in a tension or compression state, and the insulating layer in this state will surely be damaged, or even insulation failure will occur, bringing great hidden dangers to the safe and stable operation. In addition, accidents caused by insulation damage due to cable compression or tension are also often seen. Once an accident occurs, the loss is difficult to estimate. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a cable anti-vibration device with a compact structure, convenient operation, and stable reliability in order to prevent the axial displacement of the cable, reduce the local stress condition of the cable, and thus avoid the safety hazards caused by the over-limit stress of the cable insulation. To achieve the above purpose, the utility model can adopt the following technical solutions:

[0004] A cable anti-vibration device, the cable anti-vibration devices are arranged at equal intervals on the outer layer of the cable. The cable anti-vibration device includes a shock-proof kit and a clamp assembly. The middle of the shock-proof kit is provided with an annular partition strip. The shock-proof kit is adhesively fastened to the outer periphery of the cable outer layer. The clamp assembly is clamped and fastened on the shock-proof kit and is located on both sides of the partition strip.

[0005] As a further improvement of the utility model, a plurality of fasteners are evenly distributed on the outer periphery of the shock-proof kit.

[0006] As a further improvement of the utility model, the total length of the shock-proof kit is 800 mm to 1000 mm.

[0007] As a further improvement of the utility model, the shock-proof kit is prepared from a rubber material with metal fibers.

[0008] As a further improvement of the present utility model, the hoop assembly includes a first hoop, a second hoop and a connection assembly; both the first hoop and the second hoop are fixedly connected to the connection assembly, and the connection assembly is fixedly connected to the cable support frame; the first hoop and the second hoop are clamped on the shock-proof kit and are respectively located on both sides of the partition strip.

[0009] As a further improvement of the present utility model, the first hoop includes a semi-circular first lower hoop and a first upper hoop, and threaded holes are provided at the ends of both the first lower hoop and the first upper hoop to enable threaded connection between the first lower hoop and the first upper hoop; the bottom of the first lower hoop is fixedly connected to the connection assembly.

[0010] As a further improvement of the present utility model, the second hoop includes a semi-circular second lower hoop and a second upper hoop, and threaded holes are provided at the ends of both the second lower hoop and the second upper hoop to enable threaded connection between the second lower hoop and the second upper hoop; the bottom of the second lower hoop is fixedly connected to the connection assembly, and the width of the gap between the first lower hoop and the second lower hoop matches the width of the partition strip.

[0011] As a further improvement of the present utility model, the connection assembly includes a connection rib plate, a connection plate and a connection bolt. Both the first lower hoop and the second lower hoop are fixed on the connection rib plate. The connection rib plate is fixedly connected to the connection plate through the connection bolt, and the connection plate is fixedly connected to the cable bracket.

[0012] As a further improvement of the present utility model, a long strip-shaped connection through hole is provided on the connection plate, the connection bolt passes through the connection through hole, and both ends of the connection bolt are fixedly connected to the connection rib plate respectively.

[0013] As a further improvement of the present utility model, the fastener is a hoop or a cable tie.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] For the cable anti-vibration device of the present utility model, by arranging the cable anti-vibration devices at equal intervals on the outer layer of the cable, the whole cable is divided into multiple cable small units; specifically, the shock-proof kit is pasted and fastened on the outer circumference of the cable outer layer, the hoop assembly is clamped and fastened on the shock-proof kit and is located on both sides of the partition strip, and the partition strip arranged in the middle of the shock-proof kit is used for axially limiting the hoop assembly, so that the axial displacement of each cable small unit is controlled within a certain range, thereby reducing the displacement accumulation of the whole cable in the axial direction, finally avoiding the over-limit of the stress on the insulating layer, and improving the safety of the cable operation. Description of the Drawings

[0016] Figure 1Schematic diagram of the main structure principle of the cable anti-vibration device in the specific embodiment of the present utility model;

[0017] Figure 2 Schematic diagram of the structure principle of the guide sleeve assembly in the specific embodiment of the present utility model;

[0018] Figure 3 Schematic diagram of the structure principle of the hoop assembly in the specific embodiment of the present utility model;

[0019] Legend description: 1. Inner layer of cable; 2. Outer layer of cable; 3. Anti-vibration kit; 4. Fastener; 5. Partition strip; 6. First hoop; 61. First lower half hoop; 62. First upper half hoop; 7. Second hoop; 71. Second lower half hoop; 72. Second upper half hoop; 8. Threaded hole; 9. Connecting rib plate; 10. Connecting plate; 101. Connecting through hole; 102. Mounting hole; 11. Connecting bolt. Detailed implementation mode

[0020] The present utility model will be further described below in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but the protection scope of the present utility model is not limited thereby.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "side part", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] In addition, 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 utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0023] Embodiment

[0024] Such as Figures 1 to 3As shown in the figure, the cable anti-vibration device of the present utility model is arranged at equal intervals on the outer layer 2 of the cable. The cable anti-vibration device includes an anti-vibration kit 3 and a hoop assembly. An annular partition strip 5 is provided in the middle of the anti-vibration kit 3. The anti-vibration kit 3 is adhesively fixed to the outer periphery of the cable outer layer 2 through industrial glue. The hoop assembly is clamped and fixed on the anti-vibration kit 3 and is located on both sides of the partition strip 5. It can be known that the cable includes an inner cable layer 1 and an outer cable layer 2. The inner cable layer 1 is the conductor for the cable to conduct electricity, and the outer cable layer 2 is the overall insulation layer, protective layer and shielding layer of the cable.

[0025] In this embodiment, by arranging the cable anti-vibration devices at equal intervals on the outer layer of the cable, the entire cable is divided into multiple small cable units; specifically, the anti-vibration kit is adhesively fixed to the outer periphery of the cable outer layer, the hoop assembly is clamped and fixed on the anti-vibration kit, and is located on both sides of the partition strip. The partition strip provided in the middle of the anti-vibration kit is used to axially limit the hoop assembly, so that the axial displacement of each small cable unit is controlled within a certain range, thereby reducing the displacement accumulation of the entire cable in the axial direction, and finally avoiding the over-limit of the insulation layer force and improving the safety of cable operation.

[0026] As Figure 1 and Figure 2 shown in the figure, a plurality of fasteners 4 are evenly distributed on the outer periphery of the anti-vibration kit 3. The fasteners 4 are used to appropriately increase the pressure between the anti-vibration kit 3 and the cable outer layer 2 to improve the overall friction between the anti-vibration kit 3 and the cable, so that the anti-vibration kit 3 can withstand the stress generated by the vibration of the cable. Further, the fastener 4 is in the form of a hoop, with a simple structure and convenient disassembly and assembly. In other embodiments, the fastener 4 can also be a cable tie.

[0027] In this embodiment, in order to effectively prevent axial displacement, the total length of the anti-vibration kit 3 is 800 mm to 1000 mm. Further, the anti-vibration kit 3 is prepared from a rubber material with metal fibers, which has both a certain structural strength and a certain insulation ability.

[0028] As Figure 1 and Figure 3 shown in the figure, the hoop assembly includes a first hoop 6, a second hoop 7 and a connecting component. Both the first hoop 6 and the second hoop 7 are fixedly connected to the connecting component, and the connecting component is fixedly connected to a cable support frame (not shown in the figure). The first hoop 6 and the second hoop 7 are clamped on the anti-vibration kit 3 and are respectively located on both sides of the partition strip 5. It can be known that the cable is usually erected on a cable support frame to achieve long-distance laying. In this embodiment, through the cooperation of the partition strip 5 and the cable support frame, the reliability of the hoop assembly for axially limiting the cable is improved.

[0029] As Figure 3As shown in the figure, the first hoop 6 includes a semi-circular first lower hoop 61 and a first upper hoop 62. Threaded holes 8 are provided at the ends of both the first lower hoop 61 and the first upper hoop 62. Screws are screwed into the threaded holes 8 to achieve threaded connection between the first lower hoop 61 and the first upper hoop 62, which has the characteristics of convenient operation and reliable connection. At the same time, the bottom of the first lower hoop 61 is fixedly connected to the connection assembly to realize the overall connection and fixation of the first hoop 6.

[0030] As Figure 3 shown in the figure, the second hoop 7 includes a semi-circular second lower hoop 71 and a second upper hoop 72. Threaded holes 8 are provided at the ends of both the second lower hoop 71 and the second upper hoop 72. Screws are screwed into the threaded holes 8 to achieve threaded connection between the second lower hoop 71 and the second upper hoop 72. The bottom of the second lower hoop 71 is fixedly connected to the connection assembly to form an integral body of the first hoop 6 and the second hoop 7. Moreover, the width of the gap between the first lower hoop 61 and the second lower hoop 71 matches the width of the partition strip 5, and the partition strip 5 is used to axially limit the integral hoop formed by the first hoop 6 and the second hoop 7.

[0031] In this embodiment, insulating gaskets are provided between the shock-proof kit 3 and the first hoop 6 and the second hoop 7. On the one hand, it can strengthen the insulation between the shock-proof kit 3 and the metal hoop and protect the outer surface layer of the cable. On the other hand, it can also prevent the up-and-down and left-and-right vibrations of the cable. At the same time, in order to prevent unnecessary abnormal sounds caused by the front-and-back vibration of the cable in the hoop, insulating gaskets are provided between the partition strip 5 and the first hoop 6 and the second hoop 7, which can not only eliminate abnormal sounds but also have a certain buffering effect.

[0032] As Figure 3 shown in the figure, the connection assembly includes a connection rib plate 9, a connection plate 10 and a connection bolt 11. Both the first lower hoop 61 and the second lower hoop 71 are fixed on the connection rib plate 9. The connection rib plate 9 is fixedly connected to the connection plate 10 through the connection bolt 11, and the connection plate 10 is fixedly connected to the cable bracket.

[0033] Furthermore, a long connection through-hole 101 is provided on the connection plate 10. The connection bolt 11 passes through the connection through-hole 101, and both ends of the connection bolt 11 are fixedly connected to the connection rib plate 9. The connection bolt 13 can be adjusted within a certain range in the connection through-hole 101 to facilitate installation and adaptation to various angle changes. A plurality of mounting holes 102 are evenly distributed on the connection plate 10 for connecting the cable bracket.

[0034] Although the present utility model is disclosed above in preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical content disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the spirit and technical solution of the present utility model. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A cable vibration isolation device, characterized in that: The cable vibration-proof devices are arranged at equal intervals on the cable outer layer (2), and the cable vibration-proof devices include a vibration-proof kit (3) and a clamp assembly. An annular baffle strip (5) is provided in the middle of the vibration-proof kit (3). The vibration-proof kit (3) is glued and fastened to the outer periphery of the cable outer layer (2), and the clamp assembly is fastened and fastened to the vibration-proof kit (3) and is located on both sides of the baffle strip (5).

2. The cable vibration isolation device according to claim 1, characterized in that: A plurality of fasteners (4) are evenly distributed on the periphery of the anti-vibration kit (3).

3. The cable vibration isolation device according to claim 2, characterized in that: The total length of the shockproof kit (3) is 800 mm to 1000 mm.

4. The cable vibration isolation device according to any one of claims 1 to 3, characterized in that: The shockproof kit (3) is made of a rubber material with metal fibers.

5. The cable vibration isolation device according to claim 4, characterized in that: The clamp assembly comprises a first clamp (6), a second clamp (7) and a connecting assembly; the first clamp (6) and the second clamp (7) are both connected and fixed to the connecting assembly, and the connecting assembly is connected and fixed to the cable support frame; the first clamp (6) and the second clamp (7) are clamped on the anti-vibration kit (3) and are respectively located on both sides of the baffle strip (5).

6. The cable vibration isolation device according to claim 5, characterized in that: The first hoop (6) comprises a semicircular first lower hoop (61) and a first upper hoop (62), and the ends of the first lower hoop (61) and the ends of the first upper hoop (62) are both provided with threaded holes (8) to achieve threaded connection between the first lower hoop (61) and the first upper hoop (62); the bottom of the first lower hoop (61) is connected and fixed to the connecting assembly.

7. The cable vibration isolation device according to claim 6, characterized in that: The second hoop (7) comprises a semicircular second lower hoop (71) and a second upper hoop (72), and the end of the second lower hoop (71) and the end of the second upper hoop (72) are both provided with threaded holes (8) to achieve threaded connection between the second lower hoop (71) and the second upper hoop (72); the bottom of the second lower hoop (71) is connected and fixed to the connecting assembly, and the width of the gap between the first lower hoop (61) and the second lower hoop (71) matches the width of the barrier strip (5).

8. The cable vibration isolation device according to claim 7, characterized in that: The connection assembly comprises a connection rib (9), a connection plate (10) and a connection bolt (11); the first lower half hoop (61) and the second lower half hoop (71) are both fixed on the connection rib (9); the connection rib (9) is connected and fixed to the connection plate (10) via the connection bolt (11); and the connection plate (10) is connected and fixed to the cable bracket.

9. The cable vibration isolation device according to claim 8, characterized in that: The connecting plate (10) is provided with a long strip-shaped connecting through hole (101), the connecting bolt (11) passes through the connecting through hole (101), and both ends of the connecting bolt (11) are respectively connected and fixed to the connecting rib plate (9).

10. The cable vibration isolation device according to claim 2, characterized in that: The fastener (4) is a clamp or a cable tie.

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