Coaxial cable grounding box device

Abstract

The utility model relates to a coaxial cable grounding box device which comprises a box body, a wire inlet assembly, a wire outlet assembly, an outer conductor connecting assembly and a grounding cable connecting assembly. Wherein the inner conductor and the outer conductor of the coaxial power cable are fixed through the wire inlet assembly, the wire outlet assembly and the outer conductor connecting assembly; meanwhile, the outer conductor is fixed and conducted by using a fixing block and a clamping ring in the outer conductor connecting assembly, and is further fixed by using a fixing end cover; the grounding copper terminal is arranged in the groove on the fixing block, and the grounding cable connecting assembly is used for leading out an electrical circuit, so that the grounding of the coaxial cable outer conductor is realized. And by utilizing the box cover, the waterproof belt, the waterproof glue and other objects and structures, the sealing performance, the waterproof performance and the flexibility of the device are improved, the service life of the device can be prolonged, and meanwhile later operation and maintenance of the device are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of cable earthing boxes, and particularly relates to a coaxial cable earthing box device. Background Art

[0002] The statements herein only provide background art related to the utility model and do not necessarily constitute prior art.

[0003] Coaxial power cables are widely used in the scenarios of power transmission and distribution in power systems, and their own safety performance plays a crucial role in ensuring the stability of power systems. During the use of coaxial power cables, phenomena such as lightning strikes, overvoltage, and short circuits are usually encountered, seriously affecting the normal operation of coaxial power cables; compared with general power cables, coaxial power cables have two parts, an inner conductor and an outer conductor, and during use, the outer conductor needs to be grounded through a corresponding earthing box; however, the existing earthing boxes are not suitable for the earthing of coaxial power cables.

[0004] In the prior art, when earthing a coaxial power cable, it is usually directly suspended without earthing or after stripping the outer sheath, the outer conductor of the coaxial cable is manually twisted into strands, a copper nose is crimped, and then it is connected to the earthing busbar; at the same time, waterproof tape is used for waterproof treatment at the connection. However, the above methods not only affect the transmission capacity of the power cable but also do not achieve a good waterproof effect, and there is a risk of problems such as short circuits in the coaxial power cable, and it is impossible to ensure the long-term stable operation of the power system. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a coaxial cable earthing box device, which first uses an incoming line component and an outgoing line component to fix the coaxial power cable, then uses an outer conductor connection component to separate and fix the inner conductor and the outer conductor, and finally uses an earthing cable connection component to ground the outer conductor; at the same time, the sealing performance of the device is increased by means of applying waterproof glue and installing waterproof tapes, etc.

[0006] The purpose of the utility model is to provide a coaxial cable earthing box device, which includes a box body, an incoming line component, an outgoing line component, an outer conductor connection component, and an earthing cable connection component; the incoming line component and the outgoing line component are symmetrically arranged on two opposite side surfaces of the box body, the outer conductor connection component is arranged inside the box body, and the central points of the outer conductor connection component, the incoming line component, and the outgoing line component are on the same horizontal line; the earthing cable connection component is arranged on a single side surface other than the two side surfaces.

[0007] As a further technical solution, the incoming line assembly includes an incoming line pipe, an incoming line threading sleeve, and an inner conductor protection pipe. The incoming line pipe is arranged on the outer surface of the box body. The incoming line threading sleeve is fixedly connected to the inner surface of the incoming line pipe on the side far from the box body. The inner conductor protection pipe is connected to the inner surface of the incoming line threading sleeve on the side close to the box body by an interference fit method.

[0008] As a further technical solution, the outgoing line assembly includes an outgoing line pipe and an outgoing line threading sleeve. The outgoing line pipe is arranged on the outer surface of the box body. The outgoing line threading sleeve is fixedly connected to the inner surface of the outgoing line pipe on the side far from the box body.

[0009] As a further technical solution, the outer conductor connection assembly includes a fixing block, a fixing end cover, and a clamping ring. The fixing block is a cylindrical structure with a trapezoidal frustum space opened at the center. The clamping ring is a trapezoidal frustum structure with a cylindrical space opened at the center. The fixing end cover is a disc structure with a cylinder opened at the center.

[0010] As a further technical solution, the clamping ring is arranged in the trapezoidal frustum space opened at the center of the fixing block in a nested manner. The fixing end cover is fixed to the bottom surface of the fixing block by bolts. The bottom surface is the side with a larger circular bottom surface of the internal trapezoidal frustum space.

[0011] As a further technical solution, the grounding cable connection assembly includes a cable outgoing line pipe and a cable threading sleeve. The cable outgoing line pipe is arranged on the side surface of the box body. The cable threading sleeve is fixedly connected to the inner surface of the cable outgoing line sleeve on the side outside the box body.

[0012] As a further technical solution, two grooves are symmetrically opened on the side surface of the fixing block. One of the grooves is connected to the bottom surface of the box body through an insulating support column, and the other groove is fixedly connected to the cable outgoing line pipe through a grounding copper terminal.

[0013] As a further technical solution, the circular bottom surface of the fixing block is parallel to the side surface of the box body where the incoming line assembly is installed; the fixing block is arranged on the side close to the incoming line assembly.

[0014] As a further technical solution, waterproof tapes are provided on the surfaces of the incoming line assembly, the outgoing line assembly, and the part of the grounding cable connection assembly located outside the box body.

[0015] As a further technical solution, waterproof glue is applied to the sides of the incoming line threading sleeve, the outgoing line threading sleeve, and the cable outgoing line sleeve far from the box body.

[0016] The beneficial effects of the above one or more technical solutions:

[0017] (1) In this embodiment, the coaxial cable is fixed by using the incoming line component, the outgoing line component and the outer conductor connection component. At the same time, the outer conductor connection component separates the inner conductor and the outer conductor of the coaxial cable, and fixes the outer conductor between the fixing block and the clamping ring in the outer conductor connection component. By utilizing the characteristics of the copper material of the fixing block itself, the conduction of the outer conductor is realized. Then, the electrical circuit is led out by using the grounding cable connection component, so as to realize the grounding of the outer conductor of the coaxial cable. Finally, on the premise of protecting the safety and stability of the coaxial power cable, the grounding of the outer conductor of the coaxial cable is conveniently and simply realized.

[0018] (2) In this embodiment, by setting waterproof tapes, waterproof adhesives, etc. at the connection positions of various components outside the box body and at the top of the box body, the sealing performance of the device structure is further improved, and the service life of the device is extended. At the same time, by using the openable box cover, the subsequent operation, maintenance and repair of the coaxial power cable in the device are greatly facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The schematic diagrams forming a part of this application are used to provide a further understanding of this application. For the convenience of understanding, the proportions between various parts of the structure are adjusted. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation to this application.

[0020] Figure 1 It is the overall structure diagram of a coaxial cable grounding box device of the present utility model.

[0021] Figure 2 It is the structural layout diagram of the incoming line component and the outer conductor connection component of a coaxial cable grounding box device of the present utility model.

[0022] Figure 3 It is the overall structural layout diagram of a coaxial cable grounding box device of the present utility model.

[0023] Among them, 1. Box body, 2. Incoming line component, 3. Outgoing line component, 4. Outer conductor connection component, 5. Grounding cable connection component, 6. Inlet pipe, 7. Incoming line threading sleeve, 8. Inner conductor protection pipe, 9. Outlet pipe, 10. Outgoing line threading sleeve, 11. Fixing block, 12. Fixed end cover, 13. Clamping ring, 14. Cable outlet pipe, 15. Cable threading sleeve, 16. Groove, 17. Insulating support, 18. Copper terminal, 19. Waterproof tape, 20. Inner conductor, 21. Outer conductor, 22. Bolt, 23. Waterproof adhesive, 24. Sealing gasket, 25. Box cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following Figures 1-3 combines with the attached

[0025] Embodiment 1

[0026] Referring to Figures 1-3 , a coaxial cable grounding box device includes a box body 1, an incoming line assembly 2, an outgoing line assembly 3, an outer conductor connection assembly 4 and a grounding cable connection assembly 5. Among them, the incoming line assembly 2 and the outgoing line assembly 3 are symmetrically arranged on two opposite side surfaces of the box body 1; the outer conductor connection assembly 4 is arranged inside the box body 1, and the central points of the outer conductor connection assembly 4, the incoming line assembly 2 and the outgoing line assembly 3 are on the same horizontal line; at the same time, the grounding cable connection assembly 5 is arranged on a single side surface other than the above two side surfaces.

[0027] Specifically, the grounding cable connection assembly 5, the incoming line assembly 2 and the outgoing line assembly 3 are respectively installed on three different side surfaces of the box body 1; the incoming line assembly 2 and the outgoing line assembly 3 are symmetrically arranged on two opposite side surfaces of the box body 1. At the same time, the central points of the outer conductor connection assembly 4, the incoming line assembly 2 and the outgoing line assembly 3 are taking each component as a whole, and the central point of the overall structure is taken as the central point of the component. Since the object is a coaxial power cable, it is necessary to ensure as much as possible that the coaxial power cable does not bend, so as to avoid damage to the coaxial power cable caused by bending; at the same time, keeping the coaxial power cable on the same horizontal line makes it easy to observe the surface condition of the cable, which is convenient for operation and maintenance.

[0028] According to Figure 2 , the incoming line assembly 2 includes an incoming line pipe 6, an incoming line threading sleeve 7 and an inner conductor protection pipe 8; the incoming line pipe 6 is arranged on the outer surface of the box body 1, and the incoming line threading sleeve 7 is fixedly connected to the inner surface of the incoming line pipe 6 on the side away from the box body 1; in this embodiment, the incoming line threading sleeve 7 and the incoming line pipe 6 are fixedly connected by threads. At the same time, the inner conductor protection pipe 8 is connected to the inner surface of the incoming line threading sleeve 7 close to the box body by interference fit. The outgoing line assembly 3 includes an outgoing line pipe 9 and an outgoing line threading sleeve 10, where the outgoing line pipe 9 is arranged on the outer surface of the box body 1, and the outgoing line threading sleeve 10 is fixedly connected to the inner surface of the outgoing line pipe 9 on the side away from the box body 1; the specific connection method is the same as that in the incoming line assembly 2.

[0029] Specifically, the incoming line pipe 6 can be fixedly connected to the side surface of the box body 1 by welding, and the box body 1 is provided with an opening of the same size as the incoming line pipe 6; in this embodiment, since it is aimed at a coaxial cable, all pipe structures are selected as circular. At the same time, the inner conductor protection pipe 8 is installed in the gap between the outer conductor 21 of the coaxial cable and the incoming line threading sleeve 7, and the interference fit can fix the coaxial cable to ensure that the position of the coaxial cable does not move, and at the same time can provide a certain protection for the coaxial power cable.

[0030] Compared with the existing method, only using a single inlet pipe 6 or an inlet wire threading sleeve 7 to fix and thread the cable causes inconvenience during the threading process of the cable and the inlet pipe 6, and at the same time, the inlet pipe 6 will also cause certain damage to the surface of the cable or the outer conductor 21; while in this embodiment, by combining the inlet pipe 6 and the inlet wire threading sleeve 7 and adding an inner conductor protection pipe 8, it not only facilitates the threading of the coaxial power cable, but also protects its outer conductor 21, avoiding damage and breakage.

[0031] According to Figure 2 , the outer conductor connection component 4 includes a fixing block 11, a fixed end cover 12 and a clamping ring 13; specifically, the fixing block 11 is a cylindrical structure with a trapezoidal frustum space opened in the center, the clamping ring 13 is a trapezoidal frustum structure with a cylindrical space opened in the center, and the fixed end cover 13 is a disc structure with a cylinder opened in the center.

[0032] In this embodiment, the fixing block 11, the clamping ring 13 and the fixed end cover 12 are all set as hollow structures, and the clamping ring 13 is arranged in the trapezoidal frustum space opened in the center of the fixing block 11 in a nested manner; in the embodiment, the trapezoidal frustum structure of the clamping ring 13 is roughly the same size as the trapezoidal frustum space opened in the fixing block 11; on the one hand, it is used to realize the nesting and fixing of the clamping ring 13 inside the fixing block 11, and on the other hand, it is used to fix the outer conductor 21 between the fixing block 11 and the clamping ring 13, and utilize the contact between the fixing block 11 and the outer conductor 21 to realize the grounding of the outer conductor 21.

[0033] Specifically, the fixing block 11 in this embodiment is made of copper material, and the clamping ring 13 is made of insulating material; according to the close contact between the outer conductor 21 and the fixing block 11, and at the same time, according to the nature of its own copper material of the fixing block 11 and the fixed connection grounding copper terminal 18, and then through the electrical circuit led out from the grounding cable connection component 5, the grounding of the outer conductor 21 is realized.

[0034] The fixed end cover 12 is fixed to the bottom surface of the fixing block 11 by bolts 22, and this bottom surface is the side with the larger circular bottom surface of the internal trapezoidal frustum space. In this embodiment, the circular bottom surface of the fixing block 11 is parallel to the side surface of the box body 1 where the inlet component 2 is installed; and the fixing block 11 is arranged on the side close to the inlet component 2; that is, the circular bottom surface of the cylindrical structure fixing block 11 is in a vertical state and parallel to the side surface of the box body 1, which is to correspond to the way the coaxial cable enters the box body and at the same time better fix the coaxial cable.

[0035] In addition, two grooves 16 are symmetrically formed on the side surface of the fixed block 11. One of the grooves 16 is connected to the bottom surface of the box body 1 through an insulating pillar 17, and the other groove 16 is fixedly connected to the cable outlet sleeve 14 through a grounding copper terminal 18. In this embodiment, the positions of the two grooves 16 are located at the topmost and bottommost respectively. On the one hand, it is to ensure the precise fixation of the outer conductor connection assembly 4, and at the same time leave an installation space for the grounding cable connection assembly 5.

[0036] According to Figures 1-3 , the grounding cable connection assembly 5 includes a cable outlet pipe 14 and a cable threading sleeve 15; wherein, the cable outlet pipe 14 is arranged on the side surface of the box body 1 in such a way that half of it is inside the box body 1 and half of it is outside the box body 1, and the cable threading sleeve 15 is fixedly connected to the inner surface of the cable outlet sleeve 14 on the side outside the box body 1. This assembly is used to lead out the electrical circuit, so as to realize the grounding of the outer conductor 21 of the coaxial cable.

[0037] Specifically, copper nose pieces are crimped at both ends of the electrical circuit led out by the grounding cable connection assembly 5, and both ends of it can be connected to the fixed block or the main line grounding respectively by means of bolts or the like, so as to realize the grounding of the outer conductor 21.

[0038] Usage steps of the device: During the installation process, first, the inner conductor 20 and the outer conductor 21 of the coaxial power cable enter the box body 1 through the inlet assembly 2, then the inner conductor 20 and the outer conductor 21 pass through the fixed block 11, and the clamping ring 13 is sleeved on the inner conductor 20. Immediately afterwards, the outer conductor 21 is nested on the outer surface of the clamping ring 13, and at the same time, the clamping ring 13 is moved and moved into the fixed block 11, so as to realize the fixation of the outer conductor 21 through the fixed block 11 and the clamping ring 13, and at the same time realize the grounding of the outer conductor 21. Finally, the fixed end cover 12 is fixed on the fixed block 11 through bolts 22.

[0039] In the above process, the length of the outer conductor 21 can be adjusted in real time according to the actual situation by using tools, ensuring that the outer conductor 21 of an appropriate length can be grounded, and at the same time ensuring that the inner conductor 20 can be led out of the box body 1 through the outlet assembly 3.

[0040] In addition, waterproof tapes 19 are provided on the surfaces of the inlet assembly 2, the outlet assembly 3 and a part of the grounding cable connection assembly 5 located outside the box body. At the same time, waterproof glue 23 is applied to the sides of the inlet threading sleeve 7, the outlet threading sleeve 10 and the cable outlet sleeve 15 far away from the box body 1, so as to prevent the box body 1 and each component from being wetted by water, thereby improving the sealing performance of the whole device and extending the service life of the device.

[0041] In this embodiment, the upper surface of the box body 1 is set as an open structure, and the box body 1 is sealed by the box cover 25; specifically, a sealing gasket 24 is provided at the position where the box body 1 and the box cover 25 are connected, and at the same time, the box cover 25 and the box body 1 are fixed by bolts 22; moreover, waterproof glue 23 is poured at the position where there is a gap between the box cover 25 and the box body 1, and at the same time, the above structure can be used to perform real-time maintenance and operation and maintenance on the coaxial cable by opening the box cover 25; meanwhile, the sealing performance of the device is enhanced.

[0042] Although the specific implementation manners of the present invention have been described above in conjunction with the accompanying drawings, they do not limit the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A coaxial cable grounding box device, characterized in that: It includes a box body, an incoming line assembly, an outgoing line assembly, an outer conductor connection assembly and a grounding cable connection assembly; the incoming line assembly and the outgoing line assembly are symmetrically arranged on two opposite sides of the box body, the outer conductor connection assembly is arranged inside the box body, and the center points of the outer conductor connection assembly, the incoming line assembly and the outgoing line assembly are on the same horizontal line; the grounding cable connection assembly is arranged on a single side other than the two side surfaces.

2. A coaxial cable grounding box device as claimed in claim 1, characterized in that: The incoming wire assembly includes an incoming wire tube, an incoming wire threading sleeve and an inner conductor protection tube. The incoming wire tube is arranged on the outer surface of the box body, the incoming wire threading sleeve is fixedly connected to the inner surface of the incoming wire tube away from the box body, and the inner conductor protection tube is connected to the inner surface of the incoming wire threading sleeve close to the box body by interference fit.

3. A coaxial cable grounding box device as claimed in claim 2, characterized in that: The outlet assembly comprises an outlet pipe and an outlet threading sleeve. The outlet pipe is arranged on the outer surface of the box body, and the outlet threading sleeve is fixedly connected to the inner surface of the outlet pipe away from the box body.

4. A coaxial cable grounding box device as claimed in claim 1, characterized in that: The outer conductor connection assembly includes a fixed block, a fixed end cover and a clamping ring. The fixed block is a cylindrical structure with a trapezoidal truncated cone space in the center, the clamping ring is a trapezoidal truncated cone structure with a cylindrical space in the center, and the fixed end cover is a disc structure with a cylinder in the center.

5. A coaxial cable grounding box device as claimed in claim 4, characterized in that: The clamping ring is arranged in a nested manner in a trapezoidal cone space opened in the center of the fixed block, and the fixed end cover is fixed to the bottom surface of the fixed block by bolts, and the bottom surface is the larger side of the circular bottom surface of the internal trapezoidal cone space.

6. A coaxial cable grounding box device as claimed in claim 3, characterized in that: The grounding cable connection assembly comprises a cable outlet tube and a cable threading sleeve. The cable outlet tube is arranged on the side of the box body, and the cable threading sleeve is fixedly connected to the inner surface of the cable outlet tube located on one side outside the box body.

7. A coaxial cable grounding box device as claimed in claim 4, characterized in that: Two grooves are symmetrically arranged on the side of the fixing block, one of which is connected to the bottom surface of the box body through an insulating support, and the other is fixedly connected to the cable outlet pipe through a grounding copper terminal.

8. A coaxial cable grounding box device as claimed in claim 4, characterized in that: The circular bottom surface of the fixing block is parallel to the side surface of the box body on which the incoming line assembly is installed; the fixing block is arranged on a side close to the incoming line assembly.

9. A coaxial cable grounding box device as claimed in claim 1, characterized in that: Waterproof tapes are provided on the surfaces of the incoming line assembly, the outgoing line assembly and part of the grounding cable connection assembly located outside the box.

10. A coaxial cable grounding box device as claimed in claim 6, characterized in that: The side of the inlet threading sleeve, the outlet threading sleeve and the cable outlet pipe away from the box body is coated with waterproof glue.

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