Anti-falling prefabricated branch cable

Abstract

The utility model belongs to the technical field of cable production, and particularly relates to an anti-falling prefabricated branch cable, which comprises a trunk cable and a branch cable, and the trunk cable and the branch cable are connected through a branch connector. The insulation sleeve comprises two shells which can be clamped with each other and sleeve the trunk cable and the branch cable, the opposite walls of the two shells are provided with wire embedding grooves and a plurality of mounting cavities, the wire embedding grooves are used for embedding the trunk cable and the branch cable, and the mounting cavities are communicated with the wire embedding grooves; the anti-breaking connecting structures are arranged corresponding to the mounting cavities, are arranged on the trunk cable and the branch cable respectively, are located in the mounting cavities and are used for limiting and buffering the trunk cable and the branch cable, and the scheme can prevent the branch cable from being broken due to the fact that the branch cable is pulled away from the trunk cable by external force, and prevent potential safety hazards.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable production, and in particular relates to a prefabricated branch cable that is anti-falling off. Background Art

[0002] Prefabricated branch cables are a type of cable used in the lighting industry. Designed with a main trunk cable and several branch cables of predetermined lengths or locations (e.g., one-to-one, one-to-two, or one-to-three), these cables are suitable for power supply trunks in medium- and high-rise buildings with rated voltages of 1 kV and below, such as factories, shopping malls, airports, outdoor plazas, and residential communities. They replace the currently commonly used enclosed bus ducts. Compared to using bus ducts, prefabricated branch cables significantly reduce project costs. A properly functioning prefabricated branch cable system requires no additional maintenance. The use of branched cables allows for flexible and convenient installation, shortening the circuit installation cycle, significantly reducing material and construction costs, and ensuring the safety and reliability of power distribution.

[0003] The currently produced, anti-slip prefabricated branch cables are prefabricated in factories according to user design drawings during the production of main cables. This is a new technology product developed in recent years and boasts superior seismic resistance, airtightness, and waterproofing compared to existing technologies. Existing anti-slip prefabricated branch cables cold-press the conductor cores of the main and branch cables in the pre-branching area, then rely on an external insulation layer for reinforcement. This structural stability is generally poor, and the branches are not protected. This makes them susceptible to pulling and separation during use. When pulled, the branch cables can easily separate at their connection to the main cable, causing them to detach from the insulation casing, posing a safety hazard. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a prefabricated anti-falling branch cable to solve the problem that the currently produced prefabricated anti-falling branch cables have general structural stability and do not protect the branches. They are easily pulled and separated during use. When the branch line is pulled, the connection between the branch line and the main line is easily separated, causing the branch line to detach from the insulating shell, posing a safety hazard.

[0005] The technical solution adopted by the utility model is as follows: a prefabricated branch cable with an anti-falling property, comprising a trunk cable and a branch cable, wherein the connection between the trunk cable and the branch cable is connected via a branch connector;

[0006] An insulating sleeve, comprising two housings that can be engaged with each other and sleeved on the outside of the trunk cable and the branch cable, wherein the two housings are provided with cable burying grooves and a plurality of installation cavities on the opposite walls thereof, wherein the cable burying grooves are used to bury the trunk cable and the branch cable, and the installation cavities are connected to the cable burying grooves;

[0007] Anti-breaking connection structure, wherein several anti-breaking connection structures are provided corresponding to several installation cavities, respectively provided on the trunk cable and the branch cable, and located in the installation cavity, for limiting and buffering the trunk cable and the branch cable.

[0008] Furthermore, there are three installation cavities, which are respectively arranged at the inner edges of the three notches of the buried cable groove;

[0009] There are three anti-break connection structures, and the anti-break connection structures include connecting blocks and springs. Each connecting block is fixedly mounted on the main cable and the branch cable respectively. The connecting block can slide in the installation cavity along the length direction of the shell. Each spring is mounted on the main cable and the branch cable respectively. One end of the spring abuts against the outer wall of the connecting block, and the other end of the spring is fixedly connected to the side wall of the installation cavity.

[0010] Furthermore, the trunk cables and branch cables located in the buried cable trough are in a bent state.

[0011] Furthermore, the branch connector is a C-shaped wire clamp, and a limiting cavity is provided on the opposite walls of the two shells. The C-shaped wire clamp is installed in the limiting cavity, and the limiting cavity is communicated with the buried wire groove.

[0012] Furthermore, sealing gaskets are provided at the three notches of the buried cable groove.

[0013] The beneficial effects of the present invention are as follows: this solution can ensure a stable connection between the main cable and the branch cable by setting a branch connector at the connection between the two, which helps to reduce the risk of loose connection or breakage due to external force, thereby ensuring the stable operation of the power system; the setting of the anti-break connection structure can effectively limit and buffer the main cable and the branch cable. When the main cable and the branch cable are subjected to hard pulling, the anti-break connection structure can absorb part of the impact force, thereby avoiding the branch cable from being pulled away from the main cable by external force and breaking, preventing safety hazards, and is of great significance for improving the tensile strength and durability of the main cable and the branch cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] The attached drawings are marked as follows:

[0017] Trunk cable 1, branch cable 2, insulating sleeve 3, outer shell 31, installation cavity 32, buried cable groove 33, limiting cavity 34, anti-break connection structure 4, connecting block 41, spring 42, sealing gasket 5, branch connector 6. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] like Figures 1 and 2 As shown, a prefabricated branch cable with an anti-falling property includes a branch connector 6, a trunk cable 1 and a branch cable 2, wherein the connection between the trunk cable 1 and the branch cable 2 is connected via the branch connector 6;

[0022] The insulating sleeve 3 includes two outer shells 31 that can be engaged with each other and are sleeved on the outside of the trunk cable 1 and the branch cable. The two outer shells 31 have a buried cable groove 33 and several installation cavities 32 on the opposite walls. The buried cable groove 33 is used to bury the trunk cable 1 and the branch cable 2. The buried cable groove 33 penetrates the two outer shells 31 outward and forms three notches for the trunk cable 1 and the branch cable 2 to pass through the insulating sleeve 3. The installation cavity 32 is connected to the buried cable groove 33;

[0023] The anti-breaking connection structure 4 is provided with several anti-breaking connection structures 4 corresponding to the several installation cavities 32, which are respectively provided on the trunk cable 1 and the branch cable 2, and are located in the installation cavity 32, for limiting and buffering the trunk cable 1 and the branch cable 2.

[0024] As a preferred solution, there are three installation cavities 32, and the three installation cavities 32 are respectively arranged at the inner edges of the three slots of the buried cable trough 33; by arranging three installation cavities 32 at the inner edges of the three slots of the buried cable trough 33, multiple fixing points can be provided for the connection of the trunk cable 1 and the branch cable 2. Such a layout helps to disperse the stress at the cable connection and reduce the risk of connection breakage caused by the cable's own weight or external tension.

[0025] There are three anti-break connection structures 4, and the anti-break connection structures 4 include connection blocks 41 and springs 42. Each connection block 41 is fixedly mounted on the trunk cable 1 and the branch cable 2, and the connection block 41 can slide in the installation cavity 32 along the length direction of the shell 31. Each spring 42 is mounted on the trunk cable 1 and the branch cable 2, and one end of the spring 42 abuts against the outer wall of the connection block 41, and the other end of the spring 42 is fixedly connected to the side wall of the installation cavity 32. The connection block 41 is fixedly mounted on the trunk cable 1 and the branch cable 2, and can slide in the installation cavity 32 along the length direction of the shell 31. This sliding mechanism allows the cable to have a certain amount of movement when subjected to external force, thereby preventing the branch cable 2 from being separated from the trunk cable 1 and breaking due to hard pulling, thereby avoiding safety hazards.

[0026] In this embodiment, the anti-break connection structure 4 includes two springs 42, symmetrically arranged on either side of the connection block 41. One end of each spring 42 abuts the outer wall of the connection block 41, and the other end of each spring 42 is fixedly connected to the side wall of the mounting cavity 32. Each anti-break connection structure 4 also includes two springs 42 symmetrically arranged on either side of the connection block 41. One end of each spring 42 abuts the outer wall of the connection block 41, and the other end is fixedly connected to the side wall of the mounting cavity 32. When the cable is pulled by external forces, the springs 42 effectively absorb and buffer this force, reducing direct impact on the cable connection.

[0027] As a preferred solution, the trunk cable 1 and the branch cable 2 in the buried cable trough 33 are in a bent state, so that when the trunk cable 1 and the branch cable 2 are pulled, the trunk cable 1 and the branch cable 2 can move to a certain extent.

[0028] As a preferred embodiment, the branch connector 6 is a C-shaped wire clamp. A limiting cavity 34 is defined on the opposing walls of the two housings 31. The C-shaped wire clamp is mounted within the limiting cavity 34, which is in communication with the buried wire groove 33. The C-shaped wire clamp, through its unique structural design, ensures a long-lasting and constant contact pressure between the wire and the clamp, maintaining stability even when the wire expands or contracts due to thermal expansion or contraction.

[0029] As a preferred solution, sealing gaskets 5 are provided at the three notches of the buried cable groove 33. The sealing gaskets 5 are made of rubber material, which will clamp the sealing gasket and increase the static friction and sealing between the trunk cable 1 and the branch cable 2 and the insulating sleeve 3.

[0030] The above describes the present invention in detail. The description of the specific embodiments is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A prefabricated branch cable that prevents falling off, characterized by: include A trunk cable (1) and a branch cable (2), wherein the connection between the trunk cable (1) and the branch cable (2) is connected via a branch connector (6); An insulating sleeve (3), the insulating sleeve (3) comprising two housings (31) that can be engaged with each other and sleeved on the outside of the trunk cable (1) and the branch cable, the two housings (31) having opposite walls provided with buried cable grooves (33) and a plurality of installation cavities (32), the buried cable grooves (33) being used for burying the trunk cable (1) and the branch cable (2), and the installation cavities (32) being in communication with the buried cable grooves (33); An anti-break connection structure (4) is provided with a plurality of anti-break connection structures (4) corresponding to a plurality of installation cavities (32), which are respectively provided on the trunk cable (1) and the branch cable (2), and are located in the installation cavities (32) for limiting and buffering the trunk cable (1) and the branch cable (2).

2. The anti-falling prefabricated branch cable according to claim 1, characterized in that: There are three installation cavities (32), and the three installation cavities (32) are respectively arranged at the inner edges of the three notches of the buried wire groove (33); The anti-breaking connection structures (4) are provided with three, and the anti-breaking connection structures (4) include a connecting block (41) and a spring (42), each of the connecting blocks (41) is fixedly mounted on the trunk cable (1) and the branch cable (2), and the connecting block (41) can slide along the length direction of the shell (31) in the installation cavity (32), and each of the springs (42) is mounted on the trunk cable (1) and the branch cable (2), and one end of the spring (42) abuts against the outer wall of the connecting block (41), and the other end of the spring (42) is fixedly connected to the side wall of the installation cavity (32).

3. The anti-falling prefabricated branch cable according to claim 2, characterized in that: The trunk cable (1) and branch cable (2) located in the buried cable trough (33) are in a bent state.

4. The anti-falling prefabricated branch cable according to claim 1, characterized in that: The branch connector (6) is a C-shaped wire clamp. A limiting cavity (34) is provided on the opposite walls of the two housings (31). The C-shaped wire clamp is installed in the limiting cavity (34). The limiting cavity (34) is communicated with the buried wire groove (33).

5. The anti-falling prefabricated branch cable according to claim 1, characterized in that: Sealing gaskets (5) are provided at the three notches of the buried wire groove (33).

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