CN113809701B

CN113809701B - Power cable branching device and method

Info

Publication number: CN113809701B
Application number: CN202111074311.9A
Authority: CN
Inventors: 姚超; 程大千; 吴昊; 马文立; 吴振; 张华莎; 王帆; 张新宇; 张海涛
Original assignee: Yutai Power Supply Co Of State Grid Shandong Electric Power Co; State Grid Corp of China SGCC; Jining Power Supply Co
Current assignee: Yutai Power Supply Co Of State Grid Shandong Electric Power Co; State Grid Corp of China SGCC; Jining Power Supply Co
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2023-03-14
Anticipated expiration: 2041-09-14
Also published as: CN113809701A

Abstract

The invention provides a power cable branching device and a power cable branching method, relates to the technical field of power supply supporting equipment, and comprises a shell, wherein the shell is made of an insulating material, a plurality of cable inlet openings are formed in the periphery of the shell, a metal binding post is arranged in the shell and used for fixedly connecting cables, the cable inlet openings are located outside the shell and fixedly connected with a fixed block, a through hole is formed in the fixed block and connected with the cable inlet openings, the cables penetrate through a threading hole and enter the shell from the cable inlet openings, a trapezoidal block is arranged in the threading hole and can clamp the cables when the cables are pulled, the cables are prevented from being pulled out of the shell, and when the cables are loosened, the trapezoidal block drives the cables to move towards the inner direction of the shell, so that the cables are prevented from being separated from the metal binding post due to long-time tensioning.

Description

Power cable branching device and method

Technical Field

The invention relates to the technical field of power supply corollary equipment, in particular to a power cable branching device and a power cable branching method.

Background

The junction box is a terminal of a distribution cable or an optical cable, is connected with the distribution cable or the optical cable and a user line part, branches a trunk line, has an important function, can be arranged in narrow spaces such as a bridge, a box body, a pipeline, a cable duct and the like, does not occupy the effective use area of a building, is convenient to install and does not need to cut off the main cable.

At present, the traditional cable branching device does not have the movable performance of a cable, so that the cable branching box is long in time, and due to the external force and the artificial influence, the joint in the cable branching box is loosened, the contact between the cable ends is poor, the life and the work of people are influenced, the short circuit of a line is seriously caused, and the fire hazard and the damage of an electric appliance are caused.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a power cable branching device and a power cable branching method.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, an embodiment of the invention provides a power cable branching device, which comprises a shell, wherein the shell is made of an insulating material, a plurality of cable access ports are formed in the periphery of the shell, a metal binding post is arranged in the shell and is used for fixedly connecting cables, the cable access ports are located outside the shell and are fixedly connected with a fixed block, threading holes are formed in the fixed block and are communicated with the cable access ports, and the cables penetrate through the threading holes and enter the shell from the cable access ports.

Furthermore, the shell is formed by clamping a lower shell and an upper shell, and the lower shell and the upper shell are the same in shape and convenient to mount.

Furthermore, the cable access ports are divided into a main line access port and a branch line access port, one main line access port is located at the lower part of the shell, and a plurality of branch line access ports are located at the upper part of the shell, so that the main line and the branch line can be conveniently distinguished.

Furthermore, a terminal clamping groove is formed in the lower shell, and the metal terminal is connected with a cable and then embedded into the terminal clamping groove.

Furthermore, the cable conductor inserts and is equipped with line ball piece and pressing wire frame on the inside lateral wall of mouth bit in casing, the line ball piece both ends are equipped with the through-hole, pressing wire frame both ends are equipped with the screw hole, and the line ball piece passes through the bolt to be fixed the cable conductor on pressing the wire frame, breaks away from the cable conductor from metal binding post when preventing to drag the cable conductor.

Furthermore, the side walls of the two sides of the threading hole are correspondingly provided with grooves, and the inner walls of the grooves are arranged in an inclined plane.

Further, the trapezoidal block is placed in the groove, the spring columns are arranged between the trapezoidal block and the side wall of the groove, and the spring columns can limit the movement of the trapezoidal block in the groove.

Further, the one end that recess inner wall was kept away from to the trapezoidal piece is the cambered surface setting, and the cambered surface is higher than the through wires hole lateral wall, and the cambered surface can contact completely with the cable conductor surface, presss from both sides tight cable conductor jointly through the trapezoidal piece of through wires hole both sides.

Further, the arc surface of trapezoidal piece is provided with the rubber gasket for the frictional force between increase trapezoidal piece and the cable conductor.

In a second aspect, an embodiment of the present invention provides a power cable branching method, where a cable passes through a threading hole on a fixing block, enters an insulating casing from a cable inlet, a main cable and a branching cable are connected to metal terminals inside the casing respectively, the metal terminals and the cable are firmly connected and then embedded into terminal clamping grooves on a lower casing, bolts at two ends of a cable pressing block are tightened, the cable is pressed and fixed in a cable pressing frame by the cable pressing block, and finally the lower casing is clamped with an upper casing, and the metal terminals are wrapped inside the casing.

The invention has the beneficial effects that:

according to the power cable branching device, the trapezoidal block is arranged in the threading hole, when the cable is pulled, the trapezoidal block can clamp the cable to prevent the cable from being pulled out of the shell, when the cable is released, the trapezoidal block drives the cable to move towards the inner direction of the shell, and the cable is prevented from being separated from the metal binding post due to long-time tensioning.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of the internal structure of the branching device according to the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

wherein, 1, a shell, 2, a metal binding post, 3, a wire pressing frame, 4, a cable access port, 5, a fixing block, 6, a threading hole, 7, a groove, 8, a trapezoidal block, 9 and a spring column.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, 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 application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

For convenience of description, the words "up", "down", "left" and "right" in the present application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the invention.

As introduced in the background art, the present invention provides a power cable distribution device, which is directed to the above problems, because the existing cable distribution device is affected by external force and human, the joints in the cable distribution box are loosened, the contact between the cable ends is poor, and the life and work of people are affected.

Example 1

In a typical embodiment of the present invention, as shown in fig. 1-2, a power cable branching device includes a housing 1, the housing is made of an insulating material, a plurality of cable inlets 4 are disposed around the housing, the cable inlets are divided into a main line inlet and a branch line inlet, preferably, the main line inlet is disposed at a lower portion of the housing, the branch line inlets are disposed at an upper portion of the housing, a plurality of metal terminals 2 with connection terminals are disposed inside the housing for connecting the main line and the branch line, the housing is formed by fastening a lower housing and an upper housing, the lower housing and the upper housing have the same shape, a terminal clamping groove for fixing the metal terminals is disposed inside the lower housing, the metal terminals are embedded into the terminal clamping groove on the lower housing after being connected with the cables, a cable pressing frame 3 and a cable pressing block for fixing the cables are further disposed on a side wall of the housing at the cable inlets, threaded holes are disposed at two ends of the pressing frame, and the cable pressing block fixes the cables on the pressing frame through bolts.

The cable conductor inserts the mouth and is located outside fixedly connected with of casing and is used for restricting fixed block 5 that the cable conductor removed, the through wires hole 6 has been seted up to the fixed block inside, through wires hole and cable conductor insert mouthful intercommunication, inside the cable conductor can pass the through wires hole and get into the casing from the cable conductor insert mouth, correspond on the lateral wall of fixed block through wires hole both sides and seted up recess 7, the recess inner wall is the inclined plane setting, trapezoidal piece 8 has been placed to recess inside, the lower extreme of trapezoidal piece passes through spring post 9 and is connected with the recess lateral wall, the one end of keeping away from the recess inner wall is the cambered surface setting, and the cambered surface is a little higher than the through wires hole lateral wall, makes the trapezoidal piece of through wires hole both sides can compress tightly the cable conductor, the arc surface of trapezoidal piece is provided with the rubber gasket, the rubber gasket can increase the frictional force between trapezoidal piece and the cable conductor.

Example 2

In another exemplary embodiment of the present invention, as shown in fig. 1 to 2, a power cable branching method is provided, which uses the power cable branching device described in example 1.

The method comprises the following steps:

pass the through wires hole on the fixed block with the cable, insert mouthful entering insulating housing inside from the cable conductor, connect the thread respectively on the inside metal binding post of casing with separated time, in the terminal draw-in groove on the casing under embedding behind metal binding post and the cable conductor firm in connection, screw up the bolt at line ball both ends, the line ball compresses tightly the cable conductor and fixes in pressing the line frame, box body and last box body block will be gone down at last, with the metal binding post cladding inside the casing.

When the cable is pulled accidentally, the cable is tightly fixed on the shell through the wire pressing block and the wire pressing frame, so that the movement of the cable is limited, and the cable is prevented from being separated from the metal binding post. Be connected not hard up between cable pressing block and pressure line frame, the cable pressing block can't restrict the cable conductor with the pressure line frame and remove, the cable conductor removes to the outside direction of casing this moment, under the effect of the frictional force that rubber gasket provided, the cable conductor drives through wires hole both sides trapezoidal piece and removes along the recess inner wall, the spring post is compressed this moment, the removal of trapezoidal piece will further press from both sides tight cable conductor, finally make the cable conductor fix once more, when loosening the cable conductor, under the effect of spring post, the trapezoidal piece drives the cable conductor and removes to the inside direction of casing, prevent to break away from metal terminal because of long-time taut cable conductor that leads to.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. The power cable branching device is characterized by comprising a shell, wherein the shell is made of insulating materials, a plurality of cable access openings are formed in the periphery of the shell, metal binding posts are arranged inside the shell and used for fixedly connecting cables, the cable access openings are located outside the shell and fixedly connected with fixing blocks, threading holes are formed in the fixing blocks and connected with the cable access openings, and the cables penetrate through the threading holes and enter the shell from the cable access openings;

grooves are correspondingly formed in the side walls of the two sides of the threading hole, and the inner walls of the grooves are arranged in an inclined plane;

the cable comprises a groove, a trapezoidal block and a spring column, wherein the trapezoidal block is arranged in the groove, the spring column is arranged between the trapezoidal block and the side wall of the groove and can limit the movement of the trapezoidal block in the groove, the cable is further clamped by the movement of the trapezoidal block, the cable can be clamped by the trapezoidal block when being pulled, and the cable is driven to move towards the inner direction of the shell by the trapezoidal block when being released;

one end of the trapezoid block, which is far away from the inner wall of the groove, is arranged as an arc surface, and the arc surface is higher than the side wall of the threading hole.

2. The power cable distribution device of claim 1, wherein the housing is formed by engaging a lower housing with an upper housing, the lower housing and the upper housing being of the same shape.

3. A power cable breakout device according to claim 2, wherein the cable inlets are divided into a main inlet and a breakout inlet, one of the main inlets being located in the lower portion of the housing, and a plurality of the breakout inlets being located in the upper portion of the housing.

4. A power cable branching device as claimed in claim 3, wherein the lower housing is provided with a terminal slot therein, and the metal terminal is inserted into the terminal slot after being connected with the cable.

5. A power cable branching device as claimed in claim 4, wherein the side wall of the cable inlet inside the casing is provided with a cable pressing block and a cable pressing frame, through holes are provided at two ends of the cable pressing block, threaded holes are provided at two ends of the cable pressing frame, and the cable pressing block fixes the cable on the cable pressing frame by bolts.

6. A power cable breakout device according to claim 5, wherein the arcuate surfaces of the trapezoidal blocks are provided with rubber pads to increase the friction between the trapezoidal blocks and the cable wires.

7. A method of branching a power cable, using the power cable branching device according to claim 6

The method is characterized by comprising the following steps:

at first pass the through wires hole on the fixed block with the cable conductor, insert mouthful from the cable conductor and get into inside the insulating casing, then connect the thread respectively on the inside metal binding post of casing with separated time, in the terminal draw-in groove on the casing under embedding behind metal binding post and the cable conductor firm in connection, screw up the bolt at cord grip both ends, the cord grip compresses tightly the cable conductor and fixes in the cord grip, box body and last box body block will be gone down at last, with the metal binding post cladding inside the casing.