CN114843988A

CN114843988A - Cable joint butt joint device

Info

Publication number: CN114843988A
Application number: CN202210669928.3A
Authority: CN
Inventors: 郭英霄; 李洪洋; 高绍群; 王绪保; 任晓蕾; 李宗睿; 张皓月; 陈思雨; 刘光新; 王欣宁
Original assignee: Gaotang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Current assignee: Gaotang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-08-02
Anticipated expiration: 2042-06-14
Also published as: CN114843988B; CN117293726A

Abstract

The invention discloses a cable joint butt joint device, which aims to solve the technical problems that the existing butt joint connection mode of cables in joints is poor in conductivity and easy to loosen. The cable joint butt joint device comprises a winding cavity and a first connector, wherein the winding cavity and the first connector are arranged in an up-and-down symmetrical mode, the first connector is fixedly connected to the upper end of the winding cavity and the other connector is fixedly connected to the lower end of the winding cavity, and the middle nut is in threaded connection with the outer side between the first connectors. This cable joint interfacing apparatus adopts the mode of cable and electrically conductive piece winding locking, strengthens the joint strength between two sets of cables, is difficult to take place the slippage, compares in the mode of the direct butt joint of cable, and electric conductive property is better, and shaft-like electrically conductive piece moves the encircleed lantern ring and compresses tightly the locking gradually along with twisting of middle nut at the in-process of articulate, stabilizes its operating condition, is difficult to appear the skew when receiving external force vibration effect, makes electrically conductive piece and winding chamber be in coaxial state all the time.

Description

Cable joint butt joint device

Technical Field

The invention belongs to the field of electric power facility equipment, and particularly relates to a cable joint butt joint device.

Background

The development speed of power production is higher than that of other departments, and the coordinated development of national economy can be promoted, so that the power industry is also called "forerunner" of national economy, and powerful guarantee is greatly provided for economic development along with the comprehensive development of power engineering construction.

After the cable is laid, in order to enable the cable to be a continuous line, all sections of wires must be connected into a whole through cable connectors to lock and fix incoming and outgoing wires and play a role in water resistance, dust resistance and vibration resistance.

Therefore, aiming at the condition that the cable joint of the traditional butt joint installation is easy to loose, a novel cable joint butt joint device is developed, and a continuous circuit is formed by utilizing the winding connection mode of the conductive piece and the cable and matching the combined installation of the joints.

Disclosure of Invention

(1) Technical problem to be solved

The invention aims to provide a cable joint butting device, aiming at solving the technical problems that the existing cable is poor in butt joint connection mode in a joint and poor in conductivity, and the joint is easy to loosen.

(2) Technical scheme

In order to solve the technical problems, the invention provides a cable joint butt-joint device, which comprises winding cavities which are symmetrically arranged up and down, a first connector which is fixedly connected with the upper end of one winding cavity and the lower end of the other winding cavity, a middle nut which connects the two first connectors in a threaded manner is arranged between the other ends of the first connectors, four groups of movable grooves are symmetrically arranged at the top end of the first connector in a cross manner, a surrounding lantern ring is arranged in the middle of the first connector, the outer side of the surrounding lantern ring is connected with an extrusion rod in a cross way, the extrusion rod is connected with the movable groove in a sliding way, the extrusion rod protrudes out of the movable groove, and the height of the part of the extrusion rod protruding out of the movable groove is gradually increased from the end part to the center direction of the winding cavity, and a conductive piece is vertically arranged in the middle of the middle nut and is arranged on the inner side of the surrounding lantern ring.

When the cable joint butt joint device adopting the technical scheme is used, a user penetrates two cables in opposite directions from winding cavities on two sides respectively, then peels off cable sheaths on the end parts, winds middle metal wires at two ends of the outer side of a conductive part, locks two groups of winding cavities through connection of a middle nut and a first connector, and then locks the cables on the inner side of a second connector through screwing of a terminal nut.

Preferably, the lower end of the winding cavity and the upper end of the winding cavity are provided with a second connector, and the outer side of the second connector is in threaded connection with an end nut. And the end nut is rotated by hand to vertically move on the second connecting head to be close to or far away from the plastic fastening sleeve.

Preferably, No. two connector tops are provided with the plasticity and fasten the sleeve, end nut lower extreme and another end nut upper end fixedly connected with tightens up the circle, tighten up the circle set up in the plasticity fastens the sleeve outside. When the end nut is close to the plastic fastening sleeve, the tightening ring is positioned outside the plastic fastening sleeve, and inward extrusion force is generated on the plastic fastening sleeve through the uniformly contracted inner wall structure of the tightening ring to lock the internal cable.

Preferably, a waterproof ring made of rubber is arranged on the inner side of the tightening ring. The waterproof ring forms a compact waterproof and anti-seepage structure between the cable sheath and the tightening ring, so that rainwater is prevented from entering the winding cavity when the cable sheath is used outdoors.

Preferably, the cross-shaped symmetric distribution at the top end of the first connector is provided with four groups of first limiting pieces, the first limiting pieces are arranged on the upper side of the movable groove, the lower end of the extrusion rod is fixedly connected with two limiting pieces, and the second limiting pieces are arranged on the inner side of the first connector. The first limiting piece has a vertical limiting effect on the extrusion rod, the extrusion rod is prevented from slipping from the movable groove, and the second limiting piece is attached to the inner wall of the first connector and is prevented from moving outwards along the movable groove.

Preferably, the connecting seat is installed on the outer side in the middle of the conductive piece, a separating ring is connected to the middle of the inner side of the middle nut, the separating ring is arranged between the first connecting heads, and a connecting frame is fixedly connected between the connecting seat and the separating ring. The separating ring separates the two groups of the first connectors, so that the two groups of the connectors are not in direct contact with each other, and the structural friction damage is reduced.

Preferably, an insulating ferrule is arranged on the inner side of the surrounding lantern ring, and the insulating ferrule is attached to the outer side of the middle of the conductive piece. The surrounding lantern ring is a metal ring with certain deformation capacity, and the insulating ferrule is arranged between the conductive piece and the surrounding lantern ring to prevent the conductive piece from contacting with the surrounding lantern ring to cause short circuit.

The anti-slip ring is fixedly connected to the upper end and the lower end of the conductive piece, anti-slip lines are arranged at one end, close to the anti-slip ring, of the outer side of the conductive piece, the anti-slip ring is buckled on the anti-slip lines, when the middle nut and the first connector are in a threaded connection locking state, the position of the surrounding lantern ring corresponds to that of the anti-slip lines, and the surrounding lantern ring is sleeved on the anti-slip lines. The cable conductive metal wire is fixed on the conductive piece in a winding mode, the friction force between the metal wire and the conductive piece is improved through the anti-slip patterns at the end position of the cable conductive metal wire, and the metal wire is prevented from slipping by the anti-slip ring.

The invention discloses a quick butt joint method of a cable joint, which comprises the following steps:

the first step is as follows: cable is in place

Firstly, two connectors of two cables to be connected respectively penetrate through an end nut, two winding cavities and an insulating ferrule in a surrounding ferrule to penetrate out; the end nut is screwed on the plastic fastening sleeve but is not screwed, then the joint outer skins of the cables at two ends are peeled off, the metal wires of the cable joints penetrate through the middle of the anti-falling ring and are respectively wound on the anti-sliding patterns at two ends of the outer side of the conductive piece, and the anti-falling ring is buckled on the anti-sliding patterns of the conductive rod to surround the metal wires.

The second step is that: fastening cable joint

After accomplishing first step, penetrate the conducting rod that cable wire had been twined to middle nut both sides respectively in enclosing the intra-annular insulating lasso of cover, through manual rotation and screw up winding chamber and middle nut, can realize the fastening connection of both ends winding chamber and middle nut, move along with twisting of middle nut to extrude the extrusion pole salient in the part outside the activity groove, surround the lantern ring and compressed tightly the locking gradually, surround the lantern ring and then extrude the wire on the anti-skidding line of conducting rod.

The third step: cable extrusion fixation

After the second step is completed, end nuts at two ends are screwed, the plastic fastening sleeve is compressed inwards, and the cable positioned at the inner side of the second connector is compressed by the plastic fastening sleeve.

(3) Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

the cable joint butt joint device provided by the invention adopts a mode of winding and locking the cables and the conductive pieces, so that the connection strength between the two groups of cables is enhanced, the cables are not easy to slip, the conductive performance is better compared with a mode of directly butting the cables, the rod-shaped conductive pieces are gradually compressed and locked by the surrounding lantern rings along with the twisting of the middle nut in the joint connection process, the working state of the rod-shaped conductive pieces is stabilized, the rod-shaped conductive pieces are not easy to deviate under the vibration action of external force, and the conductive pieces and the winding cavity are always in a coaxial state.

Drawings

FIG. 1 is a schematic view of an assembly structure of an embodiment of a cable splice docking device according to the present invention;

FIG. 2 is a schematic view of a winding chamber configuration of an embodiment of the cable splice docking device of the present invention;

FIG. 3 is a schematic view of a surrounding collar structure of an embodiment of the cable splice interface of the present invention;

FIG. 4 is a schematic view of a middle nut structure of an embodiment of the cable splice docking device of the present invention;

fig. 5 is a schematic structural view of an end nut of an embodiment of the cable splice docking device of the present invention.

The labels in the figures are:

1. a winding chamber; 2. a first connector; 3. a movable groove; 4. surrounding the collar; 5. an extrusion stem; 6. a middle nut; 7. a conductive member; 8. a second connector; 9. an end nut; 10. a plastic fastening sleeve;

11. tightening the ring; 12. a waterproof ring; 13. a first limiting sheet; 14. a second limiting sheet; 15. a connecting seat; 16. a spacer ring; 17. a connecting frame; 18. an insulating ferrule; 19. the anti-drop ring;

20. and (4) anti-skid lines.

Detailed Description

The cable joint butt joint device comprises a winding cavity 1 and a first joint 2, wherein the winding cavity 1 and the first joint 2 are symmetrically arranged from top to bottom, the first joint 2 is fixedly connected to the upper end of the winding cavity 1 and the lower end of the other winding cavity 1, and the first joint 2 is provided with an intermediate nut 6 for connecting the two first joints 2 in a threaded manner between the other ends of the first joint 2.

Four groups of movable grooves 3 have been seted up to 2 top cross symmetries of a connector, be provided with in the middle of 2 connectors and surround lantern ring 4, surround 4 outside cross connections in the lantern ring and be connected with stripper bar 5,

stripper bar

5 and 3 sliding connection in movable groove, stripper bar 5 salient outside 3 in the movable groove to stripper bar 5 salient is outside 3 in the movable groove part by tip to winding 1 central direction height in chamber step by step increase, vertically in the middle of the middle nut 6 be provided with electrically conductive 7, electrically conductive 7 set up in surround 4 inboards in the lantern ring.

To this embodiment, both sides all have helicitic texture about the inner wall of middle nut 6, are connected with two sets of connectors 2 respectively, and the centre makes and is kept certain space between connectors 2 through spacer ring 16, and tightening ring 11 extrudees plasticity fastening sleeve 10 and locks the cable tail end, makes a cable have extrusion fixed and winding fixed part simultaneously, connects more stably.

Wherein, wind 1 lower extreme in chamber and another winding 1 upper end fixedly connected with connector 8 No. two in chamber, No. two connector 8 outside threaded connection have end nut 9, and No. two 8 tops of connector are provided with plasticity fastening sleeve 10, and end nut 9 lower extreme and the other end nut 9 upper end fixedly connected with tightening ring 11, tightening ring 11 set up in the plasticity fastening sleeve 10 outside, and tightening ring 11 inboard is provided with the waterproof circle 12 of rubber material.

The end nut 9 is rotated by hand, so that the end nut vertically moves on the second connector 8, the end nut is close to or far away from the plastic fastening sleeve 10, when the end nut 9 is close to the plastic fastening sleeve 10, the tightening ring 11 is located outside the plastic fastening sleeve 10, inward extrusion force is generated on the plastic fastening sleeve 10 through the uniformly contracted inner wall structure, an internal cable is locked, the waterproof ring 12 forms a compact waterproof anti-seepage structure between a cable sheath and the tightening ring 11, and rainwater is prevented from entering the winding cavity 1 when the waterproof anti-seepage structure is used outdoors.

Meanwhile, four first limiting pieces 13 are symmetrically distributed on the top end of the first connector 2 in a cross manner, the first limiting piece 13 is arranged on the upper side of the movable groove 3, a second limiting piece 14 is fixedly connected to the lower end of the extrusion rod 5, and the second limiting piece 14 is arranged on the inner side of the first connector 2. No. one spacing piece 13 has vertical limiting action to the extrusion stem 5, prevents that it from slipping in the activity groove 3, and No. two spacing pieces 14 laminating are at the 2 inner walls of a connector, prevent that extrusion stem 5 from outwards moving along activity groove 3.

Because the height of the part of the extrusion rod 5 protruding out of the movable groove 3 is gradually increased from the end part to the center direction of the winding cavity 1, the surrounding lantern ring 4 is gradually pressed and locked along with the screwing of the middle nut 6 and the extrusion of the part of the extrusion rod 5 protruding out of the movable groove 3, and the surrounding lantern ring 4 further extrudes the metal wires on the anti-skidding threads 20 of the conducting rod 7.

In addition, a connecting seat 15 is installed on the middle outer side of the conductive piece 7, a separating ring 16 is connected to the middle of the inner side of the middle nut 6, the separating ring 16 is arranged between the first connecting heads 2, and a connecting frame 17 is fixedly connected between the connecting seat 15 and the separating ring 16. The upper and lower two groups of the first connectors 2 are separated by the separating ring 16, so that the two groups of the connectors are not in direct contact with each other, and the structural friction damage is reduced.

In addition, an insulating ferrule 18 is arranged on the inner side of the surrounding lantern ring 4, the insulating ferrule 18 is attached to the outer side of the middle of the conductive piece 7, anti-falling rings 19 are fixedly connected to the upper end and the lower end of the conductive piece 7, and anti-sliding grains 20 are arranged at one end, close to the anti-falling rings 19, of the outer side of the conductive piece 7.

Surround lantern ring 4 for having the metal ring of certain deformability, insulating lasso 18 is in conductive piece 7 and surrounds between the lantern ring 4, prevents that conductive piece 7 from appearing the short circuit with surrounding the contact of lantern ring 4, and the cable conductive metal silk passes through the winding mode to be fixed on conductive piece 7 to improve the frictional force between wire and the conductive piece 7 through anti-skidding line 20 in its end position, and utilize anticreep ring 19 lock on anti-skidding line 20, avoid the wire slippage.

Based on the innovative design of the cable joint butting device, the invention provides a cable joint quick butting method, which specifically comprises the following steps:

the first step is as follows: cable is in place

The end nut 9 needs to be screwed onto the plastic fastening sleeve 10 before the cable is fixed, but not screwed, keeping the end nut 9 from falling and allowing the cable joint to pass through.

First, two connectors of two cables to be connected are respectively passed through the end nut 9, the two winding cavities 1 and passed out of the insulating ferrule 18 enclosed in the collar 4.

Then the outer skins of the cables at two ends are stripped, the metal wires of the cable joints penetrate through the middle of the anti-falling ring 19 and are respectively wound on the anti-sliding grains 20 at two ends of the outer side of the conductive piece 7, certain adhesive force is generated on the metal wires on the conductive piece 7 in the winding process of the metal wires, and after the metal wires are wound on the conductive rod 7, the anti-falling ring 19 is buckled on the anti-sliding grains 20 of the conductive rod 7 to surround the metal wires, so that the effect of preventing the metal wires from falling off is achieved.

The second step is that: fastening cable joint

After the first step is completed, the conducting rod 7 which is wound with the cable metal wire on the two sides of the middle nut 6 penetrates into the insulating ferrule 18 in the surrounding lantern ring 4 respectively, the winding cavity 1 and the middle nut 6 are screwed up through manual rotation, the fastening connection of the winding cavity 1 at the two ends and the middle nut 6 can be realized, the middle nut 6 is screwed up, the part of the extrusion rod 5 protruding out of the movable groove 3 is extruded, the surrounding lantern ring 4 is gradually compressed and locked, the surrounding lantern ring 4 further extrudes the metal wire on the anti-skid thread 20 of the conducting rod 7, the working state of the conducting rod is stabilized, the conducting rod 7 is not easy to deviate under the vibration action of external force, and the conducting rod 7 and the winding cavity 1 are always in a coaxial state.

This step requires care that the end nut 9 remains in its initial state, i.e. the end nut 9 is screwed onto the plastic tightening sleeve 10 in a half-loosened state, but not tightened, so that the cable can slide adaptively in the middle of the end nut 9 when tightening the winding chamber 1 and the intermediate nut 6.

The third step: cable extrusion fixation

After accomplishing the second step, twist the end nut 9 at both ends, accomplish the fixed basis of winding at the second step, inwards compress plasticity fastening sleeve 10, and the cable that is in No. two connectors 8 inboards is compressed tightly by plasticity fastening sleeve 10, and the tightening ring 11 that is located end nut 9 bottom can slowly tighten up and extrude the cable to the centre, realizes that the fixed waterproof circle 12 that is located the tightening ring 11 simultaneously of cable and is equipped with can avoid the rainwater to get into.

Claims

1. Cable joint interfacing apparatus, its characterized in that:

the cable joint butt joint device comprises winding cavities (1) which are arranged in an up-and-down symmetrical mode, and a first connector (2) which is fixedly connected to the upper end of each winding cavity (1) and the lower end of the other winding cavity (1), wherein an intermediate nut (6) which is used for connecting the two first connectors (2) in a threaded mode is arranged between the other ends of the first connectors (2);

four groups of movable grooves (3) are symmetrically formed in the top end of the first connector (2), a surrounding sleeve ring (4) is arranged in the middle of the first connector (2), an extrusion rod (5) is connected to the outer side of the surrounding sleeve ring (4) in a cross mode, the extrusion rod (5) is connected with the movable grooves (3) in a sliding mode, the extrusion rod (5) protrudes out of the movable grooves (3), and the height of the portion, protruding out of the movable grooves (3), of the extrusion rod (5) is gradually increased from the end portion to the center direction of the winding cavity (1),

and a conductive piece (7) is vertically arranged in the middle of the middle nut (6), and the conductive piece (7) is arranged on the inner side of the surrounding lantern ring (4).

2. The cable splice docking device of claim 1,

winding chamber (1) lower extreme and another winding chamber (1) upper end is equipped with No. two connector (8), No. two connector (8) outside threaded connection has end nut (9).

3. The cable splice docking device of claim 2,

no. two connector (8) top is provided with plasticity fastening sleeve (10), end nut (9) lower extreme and another end nut (9) upper end fixedly connected with straining ring (11), straining ring (11) set up in the plasticity fastening sleeve (10) outside.

4. The cable splice docking device of claim 3,

the inner side of the tightening ring (11) is provided with a waterproof ring (12) made of rubber.

5. The cable splice docking device of claim 1,

a connector (2) top cross symmetric distribution has spacing piece (13) of four groups one, spacing piece (13) set up in activity groove (3) upside, No. two spacing pieces (14) of stripper bar (5) lower extreme fixedly connected with, No. two spacing pieces (14) set up in connector (2) are inboard.

6. The cable splice interface of claim 1,

connecting seat (15) are installed to the outside in the middle of electrically conductive piece (7), middle nut (6) inboard intermediate junction has divider ring (16), divider ring (16) set up in between connector (2), connecting seat (15) with fixedly connected with link (17) between divider ring (16).

7. The cable splice docking device of claim 1,

an insulating ferrule (18) is arranged on the inner side of the surrounding lantern ring (4), and the insulating ferrule (18) is attached to the outer side of the middle of the conductive piece (7).

8. The cable splice docking device of claim 1,

equal fixedly connected with anticreep ring (19) in both ends about electrically conductive piece (7), electrically conductive piece (7) outside is close to anticreep ring (19) one end and is provided with anti-skidding line (20), and anticreep ring (19) lock is on anti-skidding line (20), and when middle nut (6) and connector (2) were in threaded connection locking state, it was corresponding with anti-skidding line (20) position to surround lantern ring (4), surrounds lantern ring (4) cover and locates anti-skidding line (20) department.

9. A quick butt joint method for a cable joint is characterized in that,

the first step is as follows: cable is in place

Firstly, two connectors of two cables to be connected respectively penetrate through an end nut (9), two winding cavities (1) and an insulating ferrule (18) in a surrounding lantern ring (4) to penetrate out; the end nut 9 is screwed onto the plastic fastening sleeve 10, but not screwed,

then, peeling off the outer skins of the cables at two ends, enabling the metal wires of the cable joints to penetrate through the middle of the anti-falling rings (19) and to be respectively wound on the anti-sliding patterns (20) at two ends of the outer side of the conductive piece (7), and then buckling the anti-falling rings (19) on the anti-sliding patterns (20) of the conductive piece (7) to surround the metal wires;

the second step is that: fastening cable joint

After the first step is completed, the conducting rods (7) which are wound with the wire of the cable on the two sides of the middle nut (6) are respectively penetrated into the insulating ferrules (18) in the surrounding lantern rings (4), the winding cavities (1) and the middle nut (6) can be fastened and connected through manual rotation and screwing of the winding cavities (1) and the middle nut (6), the surrounding lantern rings (4) are gradually pressed and locked along with screwing of the middle nut (6) and extrusion of the parts of the extrusion rods (5) protruding out of the movable grooves (3), and the surrounding lantern rings (4) further extrude the wire on the anti-skidding threads (20) of the conducting rods (7);

the third step: cable extrusion fixation

After the second step is finished, end nuts (9) at two ends are screwed, the plastic fastening sleeve (10) is compressed inwards, and the cable positioned at the inner side of the second connector (8) is pressed by the plastic fastening sleeve (10).