Lightweight high-strength overhead insulated cable

Abstract

The utility model discloses a lightweight high-strength overhead insulated cable, which relates to the technical field of cables and comprises a cable used for transmitting electric power or telephone, television and digital signals, a bearing assembly, a pressing assembly and a bottom located in the bearing assembly, and the bearing assembly is located at one end of the cable and movably connected with the cable. According to the utility model, one side of the housing is installed at the wiring port of the telegraph pole, the electric push rod is started, the pressing rod and the third roller are raised, after the electric push rod is completely pushed out, the electric push rod is closed, a cable passes through the through hole of the housing and is connected to the wiring port of the telegraph pole, and the installation operation is completed. When the cable is pulled out, the pressing rod and the third roller are pressed downwards, the cable is bent downwards under the pressure action of the third roller until the cable exposed out of the shell is straightened, and in strong wind weather, the pulling force of wind on the cable is uniformly distributed on the whole cable, so that the tensile capacity of the cable is improved, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and specifically relates to a lightweight and high-strength overhead insulated cable. Background Technique

[0002] Cables are important tools in power transmission and distribution systems. Although underground cables are becoming more and more common in cities, in areas with scattered buildings such as suburbs and rural areas, as well as in occasions where temporary power and communication are required, overhead cables with low installation costs, easy maintenance, and quick deployment and adjustment are usually adopted.

[0003] However, in some occasions where weight reduction, flexibility, and convenience are required, as well as in construction sites for temporary power supply and communication, due to the reasons of easy installation and movement, some lightweight cables are often used. For this reason, a high-strength lightweight overhead insulated cable is provided (specifically refer to patent number: 202310534264.4), which includes an inner core. An insulating layer is wrapped outside the inner core. The inner cores are evenly distributed around the center line of the cable in several groups and are abutted against each other in turn. The area between several groups of inner cores is filled with insulating ropes. The outer sides of several groups of inner cores are wrapped around the outer circle with a bunching film. A recess is formed at the outer position between adjacent inner cores. The high-strength lightweight overhead insulated cable of the present invention designs a columnar airbag, which has multiple functions. First, it can play a buffering role and reduce the damage of external forces to the inner core. Second, it replaces the original armored protective layer and reduces the overall weight of the cable to become a lightweight cable. Third, when a spark or flame is generated around the cable, it burns through the airbag inward and releases carbon dioxide gas to play a flame retardant role, thereby improving the fire resistance of the cable, adapting to different working conditions, and bringing better application prospects.

[0004] However, although the existing lightweight cables meet the requirements of easy installation and movement, the wind resistance of such cables is weak. When encountering strong wind weather, the cable may be damaged by tension, exposing the conductors inside the cable, thereby reducing the service life of the cable. When encountering strong wind weather, the cable may be pulled off, resulting in large-scale power outages. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a lightweight and high-strength overhead insulated cable to solve the problems that the lightweight cable has poor wind resistance, the protective layer of the cable is easily damaged by tension during strong wind weather, reducing the service life of the cable, and the cable may be pulled off by the wind, resulting in power outages and affecting people's daily lives.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A lightweight and high-strength overhead insulated cable, including:

[0007] Cables for transmitting electricity or for transmitting telephone, television and digital signals;

[0008] A bearing component located at one end of the cable and movably connected to the cable;

[0009] A pressing component located at the bottom inside the bearing component;

[0010] The cable includes a protective layer, and a conductor is provided inside the protective layer. The bearing component includes a housing. A first fixed shaft is provided on one side inside the housing, and a first roller is sleeved outside the first fixed shaft. A second fixed shaft is provided on the other side inside the housing, and a second roller is sleeved outside the second fixed shaft. Slide rails are provided at both ends of the housing. The pressing component includes an electric push rod. A cross bar is provided at the top of the electric push rod, and connecting rods are provided at both ends of the cross bar. A pressing rod is provided between two adjacent end faces at the top of the two groups of connecting rods, and a third roller is sleeved outside the pressing rod.

[0011] As a further solution of the present utility model: Through holes penetrating the housing are provided on both sides of the housing.

[0012] As a further solution of the present utility model: Activity grooves extending to the middle position are provided at the tops of both ends of the housing, and the cross bar, the connecting rods and the pressing rod are all slidably connected to the housing through the activity grooves.

[0013] As a further solution of the present utility model: The cross bar, the connecting rods and the pressing rod are all slidably connected to the slide rails.

[0014] As a further solution of the present utility model: The first roller is movably connected to the first fixed shaft and contacts the surface of the cable, and the second roller is movably connected to the second fixed shaft and contacts the surface of the cable.

[0015] As a further solution of the present utility model: A protrusion upward is provided at the bottom of the housing, and sewage discharge holes penetrating the housing are provided on both sides at the bottom of the housing.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] Through the provided bearing component, one side of the outer shell is installed at the connection port of the utility pole. Start the electric push rod to push out the cross bar, so that the connecting rod, the pressing rod, and the third roller all move upward along the slide rail through the movable slot. After the electric push rod is fully pushed out, the height of the third roller will be higher than that of the first roller and the second roller. At this time, turn off the electric push rod, pass the cable through the through hole on the side of the outer shell away from the utility pole, place it on the tops of the first roller and the second roller, then pass it out through the through hole on the other side of the outer shell, and connect it to the connection port of the utility pole to complete the installation operation. When in use, start the electric push rod in the reverse direction to pull back the cross bar, so that the connecting rod, the pressing rod, and the third roller move downward along the slide rail through the movable slot. The cable bends downward under the pressure of the third roller, and the first roller rotates clockwise while the second roller rotates counterclockwise. When the cable exposed outside the outer shell is tightened, turn off the electric push rod. In case of strong wind weather, because the cable is in a taut state, the tensile force caused by the wind on the cable will be evenly distributed over the entire cable instead of concentrating on a certain point, thereby increasing the anti-tensile ability of the cable and extending the service life of the cable. Description of the Drawings

[0018] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0019] Figure 2 is a cross-sectional structure diagram of the present utility model;

[0020] Figure 3 is a partial cross-sectional structure diagram of the present utility model.

[0021] In the figure: 1. Cable; 101. Conducting wire; 102. Protective layer; 2. Bearing component; 201. Outer shell; 202. First fixed shaft; 203. First roller; 204. Second fixed shaft; 205. Second roller; 206. Slide rail; 3. Pressing component; 301. Electric push rod; 302. Cross bar; 303. Connecting rod; 304. Pressing rod; 305. Third roller. Specific Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The embodiments of the present utility model will be described below according to its overall structure.

[0024] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, a lightweight and high-strength overhead insulated cable includes:

[0025] Cable 1 for transmitting electricity or transmitting telephone, television and digital signals;

[0026] The bearing assembly 2 is located at one end of the cable 1 and is movably connected to the cable 1;

[0027] The pressing assembly 3 is located at the bottom inside the bearing assembly 2;

[0028] The cable 1 includes a protective layer 102, and a conductor 101 is provided inside the protective layer 102. The bearing assembly 2 includes a housing 201. A first fixed shaft 202 is provided on one side inside the housing 201, and a first roller 203 is sleeved outside the first fixed shaft 202. A second fixed shaft 204 is provided on the other side inside the housing 201, and a second roller 205 is sleeved outside the second fixed shaft 204. Slide rails 206 are provided at both ends of the housing 201. The pressing assembly 3 includes an electric push rod 301. A cross bar 302 is provided at the top of the electric push rod 301, and connecting rods 303 are provided at both ends of the cross bar 302. A pressing rod 304 is provided between two adjacent end faces at the top of the two groups of connecting rods 303, and a third roller 305 is sleeved outside the pressing rod 304.

[0029] Please pay special attention to Figure 1 and 2 , through holes penetrating the shell are provided on both sides of the housing 201 to facilitate the passage of the cable 1.

[0030] Please refer particularly to Figure 1 and 2 , movable slots extending to the middle position are provided at the tops of both ends of the outer shell 201. The cross bar 302, the connecting rod 303 and the pressing rod 304 are all slidably connected to the outer shell 201 through the movable slots, enabling them to move up and down along the movable slots.

[0031] Please refer particularly to Figure 1 and 2 , the cross bar 302, the connecting rod 303 and the pressing rod 304 are all slidably connected to the slide rail 206.

[0032] Please refer particularly to Figure 1 and 2 , the first roller 203 is movably connected to the first fixed shaft 202 and contacts the surface of the cable 1, and the second roller 205 is movably connected to the second fixed shaft 204 and contacts the surface of the cable 1, so that the cable 1 will not be worn when being pressed tightly.

[0033] Please refer particularly to Figure 1 and 2 , a convexity facing upward is provided at the bottom of the outer shell 201, and sewage discharge holes penetrating through its shell are provided on both sides of the bottom of the outer shell 201, facilitating the discharge of dirt falling into the outer shell 201.

[0034] The working principle of the present utility model is:

[0035] The wire 101 is made of high-strength aluminum alloy wire, and the protective layer 102 is made of polyethylene material. While ensuring the tensile strength of the cable 1, the cable 1 is made as lightweight as possible. During installation, through the provided load-bearing component 2, one side of the outer shell 201 is installed at the connection port of the utility pole. The electric push rod 301 is started, and the cross bar 302 is pushed out, so that the connecting rod 303, the pressing rod 304 and the third roller 305 all move upward along the slide rail 206 through the movable slot. After the electric push rod 301 is fully pushed out, the height of the third roller 305 will be higher than that of the first roller 203 and the second roller 205. At this time, the electric push rod 301 is turned off, and the cable 1 is passed through the through hole on the side of the outer shell 201 away from the utility pole, placed on the tops of the first roller 203 and the second roller 205, and then passed out through the through hole on the other side of the outer shell 201 and connected to the connection port of the utility pole to complete the installation operation. During use, the electric push rod 301 is started in the reverse direction, and the cross bar 302 is pulled back, so that the connecting rod 303, the pressing rod 304 and the third roller 305 move downward along the slide rail 206 through the movable slot. The cable 1 bends downward under the pressure of the third roller 305, and the first roller 203 rotates clockwise, and the second roller 205 rotates counterclockwise. When the cable 1 exposed outside the outer shell 201 is tightened, the electric push rod 301 is turned off. In case of strong wind weather, because the cable 1 is in a tightened state, the tensile force caused by the wind on the cable 1 will be evenly distributed on the entire cable 1 instead of concentrating on a certain point, thereby increasing the tensile capacity of the cable 1 and extending the service life of the cable.

[0036] The above-mentioned is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A lightweight and high-strength overhead insulated cable, characterized in that, Comprising: A cable (1) for transmitting electric power or transmitting telephone, television and digital signals; A bearing component (2) located at one end of the cable (1) and movably connected to the cable (1); A pressing component (3) located at the bottom inside the bearing component (2); The cable (1) includes a protective layer (102), and a conductor (101) is provided inside the protective layer (102). The bearing component (2) includes a housing (201). A first fixed shaft (202) is provided on one side inside the housing (201). A first roller (203) is sleeved outside the first fixed shaft (202). A second fixed shaft (204) is provided on the other side inside the housing (201). A second roller (205) is sleeved outside the second fixed shaft (204). Slide rails (206) are provided at both ends of the housing (201). The pressing component (3) includes an electric push rod (301). A cross bar (302) is provided at the top of the electric push rod (301). Connecting rods (303) are provided at both ends of the cross bar (302). A pressing rod (304) is provided between two adjacent end faces at the top of the two groups of connecting rods (303). A third roller (305) is sleeved outside the pressing rod (304).

2. The lightweight and high-strength overhead insulated cable according to claim 1, wherein Through holes penetrating the housing are provided on both sides of the housing (201).

3. The lightweight and high-strength overhead insulated cable according to claim 1, wherein Moving grooves extending to the middle position are provided at the tops of both ends of the housing (201). The cross bar (302), the connecting rods (303) and the pressing rod (304) are all slidably connected to the housing (201) through the moving grooves.

4. A lightweight and high-strength overhead insulated cable according to claim 1, wherein, The cross bar (302), the connecting rods (303) and the pressing rod (304) are all slidably connected to the slide rails (206).

5. A lightweight and high-strength overhead insulated cable according to claim 1, characterized in that, The first roller (203) is movably connected to the first fixed shaft (202) and contacts the surface of the cable (1). The second roller (205) is movably connected to the second fixed shaft (204) and contacts the surface of the cable (1).

6. The lightweight and high-strength overhead insulated cable according to claim 1, characterized in that, A protrusion upward is provided at the bottom of the housing (201). Drainage holes penetrating the housing are provided on both sides of the bottom of the housing (201).

Images