CN218958112U

CN218958112U - Waterproof sealing structure of cable

Info

Publication number: CN218958112U
Application number: CN202320067058.2U
Authority: CN
Inventors: 王浩; 刘耀磊; 张东星; 张维哲; 杨富海; 王亚飞; 耿岩
Original assignee: Hebei Haochang Engineering Project Management Co ltd
Current assignee: Hebei Haochang Engineering Project Management Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-05-02
Anticipated expiration: 2033-01-10

Abstract

The utility model relates to the technical field of cable waterproof structures, in particular to a cable waterproof sealing structure, which comprises a connecting male head, wherein the inner wall of the connecting male head is sleeved at the end part of a first cable, the connecting male head is fixedly connected with the first cable, a connecting female head is clamped on the connecting male head, the connecting female head is sleeved at the end part of a second cable, the connecting female head is fixedly connected with the second cable, and the outer sides of the connecting male head and the connecting female head are sealed by sealant; the outer sleeve of the male connector and the outer sleeve of the female connector are provided with outer sealing assemblies, and two ends of each outer sealing assembly are fixedly connected with the outer side walls of the first cable and the second cable respectively. The utility model can achieve the aim of improving the waterproof property of the cable.

Description

Waterproof sealing structure of cable

Technical Field

The utility model relates to the technical field of cable waterproof structures, in particular to a cable waterproof sealing structure.

Background

The cable is a wire product capable of transmitting electric energy and information and realizing electromagnetic energy conversion, and mainly comprises a cable core, a coating layer, a total protection layer and an outer protection layer which can be respectively arranged on the cable core, so that the demand of China on the cable is continuously increased along with the continuous development of economy of China, and the cable is widely applied in different environments.

In practical construction, two cables are often connected into a continuous line, and these connection points are called cable joints, so that the waterproof performance of the cable joints is poor at present, and the cable joints are easy to be damaged by water seepage, so that a waterproof sealing structure of the cable is needed to solve the problem.

Disclosure of Invention

The utility model aims to provide a waterproof sealing structure for a cable, so as to solve the problems and achieve the aim of improving the waterproof property of the cable.

In order to achieve the above object, the present utility model provides the following solutions:

the waterproof sealing structure of the cable comprises a connecting male head, wherein the inner wall of the connecting male head is sleeved at the end part of a first cable, the connecting male head is fixedly connected with the first cable, the connecting male head is clamped with a connecting female head, the connecting female head is sleeved at the end part of a second cable, the connecting female head is fixedly connected with the second cable, and the outer sides of the connecting male head and the connecting female head are sealed through sealant;

the male connection end and the female connection end are sleeved with an outer sealing assembly, and two ends of the outer sealing assembly are fixedly connected with the outer side walls of the first cable and the second cable respectively.

Preferably, the male connection head is of an annular structure, a first abdication groove and a second abdication groove are formed in the top of the male connection head, a plurality of first clamping protrusions are arranged between the first abdication groove and the second abdication groove, the plurality of first clamping protrusions are arranged at equal intervals along the circumferential direction of the male connection head, the cross section of each first clamping protrusion is of an L-shaped structure, and the plurality of first clamping protrusions are connected with the female connection head in a clamping mode;

the middle part circumference equidistant of the male joint of connection is provided with a plurality of first gland nuts, first gland nut with male joint threaded connection of connection, a plurality of first gland nut with first cable butt.

Preferably, the female connection head is of an annular structure, a second clamping protrusion is arranged at the bottom of the female connection head, the second clamping protrusion is of an annular structure, the section of the second clamping protrusion is of an L-shaped structure, and the second clamping protrusion extends into the first yielding groove and is clamped with the first clamping protrusions;

the middle part circumference equidistant of connecting female head is provided with a plurality of second gland nut, second gland nut with connect female head threaded connection, a plurality of second gland nut with the second cable butt.

Preferably, the outer sealing assembly comprises a first sealing head and a second sealing head, the first sealing head is sleeved outside the second cable, the end part of the first sealing head is fixedly connected with the side wall of the second cable, the second sealing head is sleeved outside the first cable, and the end part of the second sealing head is fixedly connected with the side wall of the first cable;

the inner wall of the first sealing head is in sliding connection with the outer wall of the second sealing head, a first waterproof part is arranged on the outer wall of the top of the second sealing head, and the first waterproof part is abutted with the inner wall of the first sealing head;

the first sealing head is sleeved with a threaded block, the bottom port of the first sealing head is connected with the threaded block through external threads in a threaded manner, and the threaded block is detachably connected with the second sealing head.

Preferably, the port at the top of the second sealing head is in threaded connection with the threaded block through an external thread, a stop block is sleeved outside the second sealing head and positioned below the external thread of the second sealing head, the stop block is fixedly connected with the side wall of the second sealing head, and a sealing ring is arranged at the top of the stop block.

Preferably, the first waterproof part comprises a plurality of sealing rings, the plurality of sealing rings are sleeved on the outer side of the second sealing head, the plurality of sealing rings are arranged at equal intervals along the length direction of the second sealing head, the sealing rings are abutted to the inner wall of the first sealing head, and the sealing rings are fixedly connected with the outer side wall of the second sealing head.

Preferably, the first cable and the second cable are respectively sleeved with a second waterproof part, a PE outer sheath is sleeved outside the second waterproof part, the end part of the PE outer sheath is fixedly connected with the bottom of the connecting male head, and the outer side wall of the PE outer sheath is fixedly connected with the end part of the second sealing head; the end part of the wire core of the first cable is abutted with a plurality of first compression nuts of the connecting male head, the end part of the wire core of the second cable is abutted with a plurality of second compression nuts of the connecting female head, the end part of the PE outer sheath of the second cable is fixedly connected with the top of the connecting female head, and the outer side wall of the PE outer sheath of the second cable is fixedly connected with the end part of the first sealing head.

Preferably, the second waterproof part comprises a shock absorption inner ring, a plurality of connecting arms are fixedly connected to the outer side of the shock absorption inner ring at equal intervals in the circumferential direction, a shock absorption outer ring is sleeved outside the shock absorption inner ring, the shock absorption outer ring is fixedly connected with the shock absorption inner ring through a plurality of connecting arms, an inert gas filling layer is filled between the shock absorption outer ring and the shock absorption inner ring, and an adhesive layer is coated on the inner wall of the shock absorption outer ring.

The utility model has the following technical effects: when the cable is used, the connecting male head is sleeved at the end part of the first cable, the end part of the connecting male head is leveled with the end part of the first cable or slightly higher than the end part of the first cable, the connecting female head is sleeved at the end part of the second cable, the end part of the connecting female head is leveled with the end part of the second cable or slightly higher than the end part of the second cable, then the connecting male head and the connecting female head are clamped, the connecting male head and the connecting female head are made of metal conductive materials, the electric power transmission is carried out by the connecting male head and the connecting female head through the clamping connection of the connecting male head and the connecting female head, the joint part of the connecting male head and the connecting female head and the joint part of the connecting male head and the first cable are completely wrapped by the sealing glue, and the joint part of the connecting female head and the connecting second cable are prevented from being damaged by the joint part. The male joint and the female joint are also sleeved with an outer sealing assembly, and the joint is integrally wrapped by the outer sealing assembly, so that the waterproof performance of the joint is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;

FIG. 3 is an enlarged view of a portion of the utility model at B in FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 2 at C in accordance with the present utility model;

FIG. 5 is a schematic diagram of a cross-sectional structure of a cable according to the present utility model;

1, a wire core; 2. a PE inner sheath; 3. foaming the filling layer; 4. a steel wire reinforcing core; 5. a paraffin cloth winding layer; 6. an expansion water stop; 7. a damping inner ring; 8. damping outer ring; 9. an adhesive layer; 10. a PE outer sheath; 11. an inert gas filling layer; 12. a connecting arm; 13. a screw block; 14. a first sealing head; 15. sealing glue; 16. connecting a male head; 17. a first compression nut; 18. a first cable; 19. a second cable; 20. connecting the female head; 21. a second compression nut; 22. a stop block; 23. a second sealing head; 1601. a first relief groove; 1602. a second relief groove; 1603. a first clamping protrusion; 2001. and the second clamping protrusion.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1-5, the utility model provides a waterproof sealing structure of a cable, which comprises a connecting male head 16, wherein the inner wall of the connecting male head 16 is sleeved at the end part of a first cable 18, the connecting male head 16 is fixedly connected with the first cable 18, the connecting male head 16 is clamped with a connecting female head 20, the connecting female head 20 is sleeved at the end part of a second cable 19, the connecting female head 20 is fixedly connected with the second cable 19, and the outer sides of the connecting male head 16 and the connecting female head 20 are sealed by sealant 15;

the male connection head 16 and the female connection head 20 are sleeved with an outer sealing assembly, and two ends of the outer sealing assembly are fixedly connected with the outer side walls of the first cable 18 and the second cable 19 respectively.

When the cable is used, the connecting male head 16 is sleeved at the end part of the first cable 18, the end part of the connecting male head 16 is leveled with the end part of the first cable 18 or slightly higher than the end part of the first cable 18, the connecting female head 20 is sleeved at the end part of the second cable 19, the end part of the connecting female head 20 is leveled with the end part of the second cable 19 or slightly higher than the end part of the second cable 19, then the connecting male head 16 and the connecting female head 20 are clamped, the connecting male head 16 and the connecting female head 20 are made of metal conductive materials, the electric connection is realized through the connecting male head 16 and the connecting female head 20, the electric transmission is realized through the connecting male head 16 and the connecting female head 20, the outer sides of the connecting male head 16 and the connecting female head 20 are sealed through the sealant 15, the joint of the connecting male head 16 and the connecting cable 18 and the joint of the connecting female head 20 and the connecting joint of the connecting female head 19 are completely wrapped inside, and the joint of the connecting female head 20 and the connecting cable 19 are prevented from being damaged by the joint of the connecting joint. The male connector 16 and the female connector 20 are also sleeved with an outer sealing assembly, and the outer sealing assembly wraps the joint integrally, so that the waterproof performance of the joint is further improved.

In a further optimization scheme, the connecting male head 16 is of an annular structure, a first abdicating groove 1601 and a second abdicating groove 1602 are formed in the top of the connecting male head 16, a plurality of first clamping protrusions 1603 are arranged between the first abdicating groove 1601 and the second abdicating groove 1602, the plurality of first clamping protrusions 1603 are arranged at equal intervals along the circumferential direction of the connecting male head 16, the cross section of the first clamping protrusions 1603 is of an L-shaped structure, and the plurality of first clamping protrusions 1603 are in clamping connection with the connecting female head 20;

a plurality of first compression nuts 17 are circumferentially arranged in the middle of the connecting male head 16 at equal intervals, the first compression nuts 17 are in threaded connection with the connecting male head 16, and the plurality of first compression nuts 17 are in butt joint with the first cable 18.

In a further optimization scheme, the connecting female head 20 is of an annular structure, a second clamping protrusion 2001 is arranged at the bottom of the connecting female head 20, the second clamping protrusion 2001 is of an annular structure, the section of the second clamping protrusion 2001 is of an L-shaped structure, and the second clamping protrusion 2001 stretches into the first yielding groove 1601 to be clamped with the plurality of first clamping protrusions 1603;

a plurality of second compression nuts 21 are circumferentially arranged in the middle of the connecting female head 20 at equal intervals, the second compression nuts 21 are in threaded connection with the connecting female head 20, and the second compression nuts 21 are in butt joint with the second cable 19.

The top of the connection male head 16 is provided with a first relief groove 1601 and a second relief groove 1602, the first relief groove 1601 is used for extending in a second clamping protrusion 2001 arranged at the bottom of the connection female head 20, the second clamping protrusion 2001 is of an annular structure, the section of the second clamping protrusion 2001 is of an L-shaped structure, an inner ring part of the second clamping protrusion 2001, which is close to the side of the connection male head 16, is provided with an inclined surface, an outer ring part of the first clamping protrusion 1603, which is close to the side of the connection female head 20, is also provided with an inclined surface and is matched with the inclined surface of the second clamping protrusion 2001, when the connection male head 16 and the connection female head 20 are close to each other, since the connection male head 16 and the connection female head 20 are made of metal conductive materials, a plurality of first clamping protrusions 1603 arranged between the first relief groove 1601 and the second relief groove 1602 are clung to the inclined surface of the second clamping protrusion 2001 to the axial direction of the connection male head 16 to generate elastic deformation, the second clamping protrusion 1602 provides enough space for the first clamping protrusion 1603 to elastically deform towards the axial direction, and the first clamping protrusion 2001 is separated from the first clamping protrusion 2001, and the first clamping protrusion 1603 is enabled to be protruded into a hook-shaped protrusion 1603.

The first clamping protrusions 1603 are disposed at equal intervals along the circumferential direction of the connection male head 16, the number of the first clamping protrusions 1603 in this embodiment is preferably 4, the number of the first clamping protrusions 1603 is at least 2, and along with the increase of the number of the first clamping protrusions 1603, the tightness between the connection male head 16 and the connection female head 20 is also increased.

It should be noted that, an interval needs to be provided between every two first fastening protrusions 1603, so that the first fastening protrusions 1603 can elastically deform toward the axial direction of the connection male head 16.

The middle part circumference equidistant of connecting public head 16 is provided with a plurality of first gland nuts 17, and first gland nut 17 and connecting public head 16 threaded connection, through the screw in of first gland nut 17 for the tip and the lateral wall butt of first cable 18 of first gland nut 17, first gland nut 17 quantity is 3 at least, and 3 first gland nuts 17 extrude the lateral wall of first cable 18 simultaneously and make first cable 18 and connect public head 16 rigid coupling.

The middle part circumference equidistant of connecting female head 20 is provided with a plurality of second gland nuts 21, and second gland nut 21 and connecting female head 20 threaded connection are through the screw in of second gland nut 21 for the tip and the lateral wall butt of second cable 19 of second gland nut 21, and second gland nut 21 quantity is 3 at least, and 3 second gland nuts 21 extrude the lateral wall of second cable 19 simultaneously and make second cable 19 and connect female head 20 rigid coupling.

In a further optimized scheme, the outer sealing assembly comprises a first sealing head 14 and a second sealing head 23, the first sealing head 14 is sleeved outside the second cable 19, the end part of the first sealing head 14 is fixedly connected with the side wall of the second cable 19, the second sealing head 23 is sleeved outside the first cable 18, and the end part of the second sealing head 23 is fixedly connected with the side wall of the first cable 18;

the inner wall of the first sealing head 14 is in sliding connection with the outer wall of the second sealing head 23, a first waterproof part is arranged on the outer wall of the top of the second sealing head 23, and the first waterproof part is abutted with the inner wall of the first sealing head 14;

the first sealing head 14 is sleeved with a threaded block 13, the bottom port of the first sealing head 14 is connected with the threaded block 13 through external threads, and the threaded block 13 is detachably connected with the second sealing head 23.

According to a further optimization scheme, the top end opening of the second sealing head 23 is connected with the thread block 13 through external threads, a stop block 22 is sleeved outside the second sealing head 23, the stop block 22 is located below the external threads of the second sealing head 23, the stop block 22 is fixedly connected with the side wall of the second sealing head 23, and a sealing ring is arranged at the top of the stop block 22.

Further optimizing scheme, first waterproof part includes a plurality of sealing washer, and a plurality of sealing rings are established in the second sealing head 23 outside, and a plurality of sealing rings set up along second sealing head 23 length direction equidistant, sealing washer and the butt of first sealing head 14 inner wall, sealing washer and the lateral wall rigid coupling of second sealing head 23.

The first sealing head 14 and the second sealing head 23 are respectively sleeved outside the second cable 19 and the first cable 18, the first sealing head 14 and the second sealing head 23 are respectively connected with the outer side walls of the second cable 19 and the first cable 18 in a sliding mode, when the male connecting head 16 and the female connecting head 20 are connected, the first sealing head 14 and the second sealing head 23 are connected with each other, the male connecting head 16 and the female connecting head 20 are wrapped in the female connecting head, then the end portions of the first sealing head 14 and the second sealing head 23 are respectively glued with the outer side walls of the second cable 19 and the first cable 18 through sealing glue, on one hand, movement of the first sealing head 14 and the second sealing head 23 is limited, the first sealing head 14 and the second sealing head 23 protect the male connecting head 16 and the female connecting head 20, and on the other hand, water is prevented from entering from the end connection positions of the first sealing head 14 and the second sealing head 23.

The inner wall of the first sealing head 14 is in sliding connection with the outer wall of the second sealing head 23, so that the second sealing head 23 stretches into the first sealing head 14, the second sealing head 23 is arranged into a stepped structure, and when the second sealing head 23 stretches into the first sealing head 14, the end part of the first sealing head 14 is abutted with the stepped part of the second sealing head 23.

The outer wall of the top of the second sealing head 23 is provided with a plurality of sealing rings, the plurality of sealing rings are sleeved on the outer side of the second sealing head 23, the sealing rings are abutted with the inner wall of the first sealing head 14, and the sealing rings are fixedly connected with the outer side wall of the second sealing head 23, so that the joint of the second sealing head 23 and the first sealing head 14 has waterproof capacity.

When the sealing device is used, when the second sealing head 23 stretches into the first sealing head 14, the threaded block 13 slides to the threaded position at the bottom port of the first sealing head 14 on the outer side wall of the first sealing head 14, then the threaded block 13 is screwed into the threads, the threaded block 13 rotates, the threaded block 13 partially screws into the threads at the outer side of the top of the second sealing head 23, the first sealing head 14 is fixedly connected with the second sealing head 23, a stop block 22 is sleeved outside the threads at the top of the second sealing head 23, the stop block 22 is fixedly connected with the side wall of the second sealing head 23, a sealing ring is arranged at the top of the stop block 22, and the threaded block 13 rotates to enable the bottom of the threaded block 13 to be contacted with the top of the stop block 22 and press the sealing ring at the top of the stop block 22, so that water is prevented from entering.

In a further optimized scheme, a second waterproof part is sleeved outside the first cable 18 and the second cable 19 respectively, a PE outer sheath 10 is sleeved outside the second waterproof part, the end part of the PE outer sheath 10 is fixedly connected with the bottom of the connecting male head 16, and the outer side wall of the PE outer sheath 10 is fixedly connected with the end part of the second sealing head 23; the end of the wire core 1 of the first cable 18 is abutted with a plurality of first compression nuts 17 of the connecting male head 16, the end of the wire core 1 of the second cable 19 is abutted with a plurality of second compression nuts 21 of the connecting female head 20, the end of the PE outer sheath 10 of the second cable 19 is fixedly connected with the top of the connecting female head 20, and the outer side wall of the PE outer sheath 10 of the second cable 19 is fixedly connected with the end of the first sealing head 14.

Further optimizing scheme, second waterproof part includes shock attenuation inner circle 7, and shock attenuation inner circle 7 outside circumference equidistant rigid coupling has a plurality of linking arms 12, and shock attenuation inner circle 7 overcoat is equipped with shock attenuation outer lane 8, and shock attenuation outer lane 8 and shock attenuation inner circle 7 pass through a plurality of linking arms 12 rigid couplings, and it has inert gas filling layer 11 to fill between shock attenuation outer lane 8 and the shock attenuation inner circle 7, and the inner wall of shock attenuation outer lane 8 scribbles gluing layer 9.

The first cable 18 and the second cable 19 are identical in structure, and the first cable 18 sequentially comprises a wire core 1, a PE inner sheath 2, a reinforcing layer, a paraffin cloth winding layer 5, an expansion water stop 6, a waterproof layer and a PE outer sheath 10 from inside to outside.

The reinforcing layer comprises a plurality of steel wire reinforcing cores 4 circumferentially arranged at equal intervals on the outer side of the PE inner sheath 2, foaming filling layers 3 are filled among the plurality of steel wire reinforcing cores 4, the number of the steel wire reinforcing cores 4 is at least 2 in the embodiment, the first cable 18 is not easy to bend through the steel wire reinforcing cores 4, and the first cable 18 is easy to keep after being bent and shaped; filling between reinforcing core 4 with a plurality of steel wires through foaming filling layer 3, be convenient for make first cable 18 keep circular cross-section, the installation of paraffin cloth winding layer 5 of being convenient for, paraffin cloth winding layer 5 is formed by the repeated winding of paraffin strap, paraffin cloth has better waterproof performance, can play good water-proof effects to the cable core of inside, dan Labu accessible is at the waterproof preparation of cotton top layer dip-dyeing paraffin emulsifier, become tiny particle absorption on the cotton after the paraffin emulsification for paraffin cloth has stronger hydrophobicity.

The expansion water stop 6 is sleeved outside the paraffin cloth winding layer 5, and the expansion water stop 6 is preferably a MXPZ-A1 water expansion water stop.

The waterproof layer is arranged on the outer sleeve of the expansion water stop belt 6, the waterproof layer comprises a shock absorption inner ring 7, the shock absorption inner ring 7 is fixedly connected with a shock absorption outer ring 8 through a plurality of connecting arms 12, an inert gas filling layer 11 is filled between the shock absorption outer ring 8 and the shock absorption inner ring 7, an adhesive layer 9 is coated on the inner wall of the shock absorption outer ring 8, if the PE outer sheath 10 on the outermost side of the first cable 18 is carelessly damaged, micropores are formed in the shock absorption outer ring 8, inert gas of the inert gas filling layer 11 between the shock absorption outer ring 8 and the shock absorption inner ring 7 can leak outwards, water is ejected outwards when the gas leaks, meanwhile, the adhesive layer 9 has self-sealing property, leakage Kong Mige can be automatically prevented, and further water leakage is prevented.

The adhesive layer 9 is preferably NPT-C001 nanometer self-sealing adhesive.

At the joint, the wire core 1 of the first cable 18 is stripped from the external protection layer, so that part of the wire core 1 is exposed at the end part of the first cable 18, the wire core 1 is abutted against a plurality of first compression nuts 17 of the connecting male head 16, after the connecting male head 16 is fixedly connected with the wire core 1, the end part of the PE outer sheath 10 is abutted against the bottom of the connecting male head 16 and fixedly connected with the bottom of the connecting male head 16 through sealant, and the installation of the connecting male head 16 is completed, and the installation of the second cable 19 and the connection female head 20 is the same.

The working process of the utility model is as follows: when in use, the wire core 1 of the first cable 18 is stripped from the external protective layer, so that part of the wire core 1 is exposed out of the end part of the first cable 18, the wire core 1 is abutted against a plurality of first compression nuts 17 of the connection male head 16, after the connection male head 16 is fixedly connected with the wire core 1, the end part of the PE outer sheath 10 is abutted against the bottom of the connection male head 16 and fixedly connected through sealant, and notably, the end part of the connection male head 16 is equal to or slightly higher than the end part of the wire core 1 of the first cable 18, the connection male head 16 and the connection female head 20 are prevented from being completely attached, the second cable 19 is installed on the same side as the connection female head 20, after the connection male head 16 and the connection female head 20 are installed, the connection male head 16 and the connection female head 20 are mutually close, the first clamping protrusion 1603 is tightly attached to the inclined surface of the second clamping protrusion 2001 to generate elastic deformation in the axial direction of the connection male head 16, when the inclined surface of the first clamping protrusion 1603 is separated from the inclined surface of the second clamping protrusion 2001, the hook-shaped part of the first clamping protrusion 1603 is sprung into the notch part of the second clamping protrusion 2001, so that the first clamping protrusion 1603 is clamped with the second clamping protrusion 2001, the end surfaces of the connecting male head 16 and the connecting female head 20 are attached, then the outer sides of the connecting male head 16 and the connecting female head 20 are sealed by the sealant 15, the joint of the connecting male head 16 and the connecting female head 20 and the joint of the connecting male head 16 and the first cable 18 and the joint of the connecting female head 20 and the second cable 19 are completely wrapped, water is prevented from entering from the joint, the first cable 18 and the second cable 19 are prevented from being damaged, the first sealing head 14 and the second sealing head 23 are connected with each other, the connecting male head 16 and the connecting female head 20 are wrapped, then the ends of the first sealing head 14 and the second sealing head 23 are respectively glued with the outer side walls of the second cable 19 and the first cable 18 through sealant, then the thread block 13 slides to the thread position at the bottom port of the first sealing head 14 at the outer side wall of the first sealing head 14, then the thread block 13 is screwed into the thread, the thread block 13 rotates, the thread block 13 is partially screwed into the thread outside the top of the second sealing head 23, the first sealing head 14 is fixedly connected with the second sealing head 23, a stop block 22 is sleeved outside the thread at the top of the second sealing head 23, the stop block 22 is fixedly connected with the side wall of the second sealing head 23, a sealing ring is arranged at the top of the stop block 22, the bottom of the thread block 13 contacts with the top of the stop block 22 and presses the sealing ring at the top of the stop block 22, water invasion is prevented, and water prevention at the joint is completed.

At the continuous position of the cable, when the PE outer sheath 10 at the outermost side of the first cable 18 (or the second cable 19) is damaged carelessly, micropores are formed on the shock-absorbing outer ring 8, inert gas of the inert gas filling layer 11 between the shock-absorbing outer ring 8 and the shock-absorbing inner ring 7 can leak outwards, water is ejected outwards while the inert gas leaks, meanwhile, the adhesive layer 9 has self-sealing performance, and leakage Kong Mige can be automatically prevented from further leaking.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. The utility model provides a waterproof seal structure of cable which characterized in that: the connecting male connector (16) is sleeved on the end part of a first cable (18), the connecting male connector (16) is fixedly connected with the first cable (18), the connecting male connector (16) is connected with a connecting female connector (20) in a clamping mode, the connecting female connector (20) is sleeved on the end part of a second cable (19), the connecting female connector (20) is fixedly connected with the second cable (19), and the outer sides of the connecting male connector (16) and the connecting female connector (20) are sealed through sealant (15);

the male connecting head (16) and the female connecting head (20) are sleeved with an outer sealing assembly, and two ends of the outer sealing assembly are fixedly connected with the outer side walls of the first cable (18) and the second cable (19) respectively.

2. The waterproof sealing structure for a cable according to claim 1, wherein: the connecting male head (16) is of an annular structure, a first abdicating groove (1601) and a second abdicating groove (1602) are formed in the top of the connecting male head (16), a plurality of first clamping protrusions (1603) are arranged between the first abdicating groove (1601) and the second abdicating groove (1602), the plurality of first clamping protrusions (1603) are arranged at equal intervals along the circumferential direction of the connecting male head (16), the cross section of each first clamping protrusion (1603) is of an L-shaped structure, and the plurality of first clamping protrusions (1603) are connected with the connecting female head (20) in a clamping mode;

the middle part circumference equidistant of the male connecting head (16) is provided with a plurality of first gland nuts (17), the first gland nuts (17) are in threaded connection with the male connecting head (16), and a plurality of first gland nuts (17) are in butt joint with the first cable (18).

3. A waterproof sealing structure for a cable according to claim 2, wherein: the connecting female head (20) is of an annular structure, a second clamping protrusion (2001) is arranged at the bottom of the connecting female head (20), the second clamping protrusion (2001) is of an annular structure, the section of the second clamping protrusion (2001) is of an L-shaped structure, and the second clamping protrusion (2001) stretches into the first abdicating groove (1601) to be clamped with the plurality of first clamping protrusions (1603);

the middle part circumference equidistant of connecting female head (20) is provided with a plurality of second gland nut (21), second gland nut (21) with connect female head (20) threaded connection, a plurality of second gland nut (21) with second cable (19) butt.

4. A waterproof sealing structure for a cable according to claim 3, wherein: the outer sealing assembly comprises a first sealing head (14) and a second sealing head (23), the first sealing head (14) is sleeved outside the second cable (19), the end part of the first sealing head (14) is fixedly connected with the side wall of the second cable (19), the second sealing head (23) is sleeved outside the first cable (18), and the end part of the second sealing head (23) is fixedly connected with the side wall of the first cable (18);

the inner wall of the first sealing head (14) is in sliding connection with the outer wall of the second sealing head (23), a first waterproof part is arranged on the outer wall of the top of the second sealing head (23), and the first waterproof part is abutted with the inner wall of the first sealing head (14);

the first sealing head (14) is sleeved with a threaded block (13), the bottom port of the first sealing head (14) is connected with the threaded block (13) through external threads, and the threaded block (13) is detachably connected with the second sealing head (23).

5. The waterproof sealing structure for a cable according to claim 4, wherein: the top port of the second sealing head (23) is in threaded connection with the threaded block (13) through external threads, a stop block (22) is sleeved outside the second sealing head (23), the stop block (22) is located below the external threads of the second sealing head (23), the stop block (22) is fixedly connected with the side wall of the second sealing head (23), and a sealing ring is arranged at the top of the stop block (22).

6. The waterproof sealing structure for a cable according to claim 4, wherein: the first waterproof part comprises a plurality of sealing rings, the sealing rings are sleeved on the outer side of the second sealing head (23), the sealing rings are arranged at equal intervals along the length direction of the second sealing head (23), the sealing rings are abutted to the inner wall of the first sealing head (14), and the sealing rings are fixedly connected with the outer side wall of the second sealing head (23).

7. The waterproof sealing structure for a cable according to claim 4, wherein: the first cable (18) and the second cable (19) are respectively sleeved with a second waterproof part, the second waterproof part is sleeved with a PE outer sheath (10), the end part of the PE outer sheath (10) is fixedly connected with the bottom of the connecting male head (16), and the outer side wall of the PE outer sheath (10) is fixedly connected with the end part of the second sealing head (23); the end of the wire core (1) of the first cable (18) is abutted with a plurality of first compression nuts (17) of the connecting male head (16), the end of the wire core (1) of the second cable (19) is abutted with a plurality of second compression nuts (21) of the connecting female head (20), the end of the PE outer sheath (10) of the second cable (19) is fixedly connected with the top of the connecting female head (20), and the outer side wall of the PE outer sheath (10) of the second cable (19) is fixedly connected with the end of the first sealing head (14).

8. The waterproof sealing structure for a cable according to claim 7, wherein: the second waterproof part comprises a shock absorption inner ring (7), a plurality of connecting arms (12) are fixedly connected to the outer side of the shock absorption inner ring (7) at equal intervals in the circumferential direction, a shock absorption outer ring (8) is sleeved outside the shock absorption inner ring (7), the shock absorption outer ring (8) is fixedly connected with the shock absorption inner ring (7) through a plurality of connecting arms (12), an inert gas filling layer (11) is filled between the shock absorption outer ring (8) and the shock absorption inner ring (7), and an adhesive layer (9) is coated on the inner wall of the shock absorption outer ring (8).