CN113488232A

CN113488232A - Silicone rubber insulation and silicone rubber sheath flexible cable for coal mining machine

Info

Publication number: CN113488232A
Application number: CN202110624107.3A
Authority: CN
Inventors: 李万松; 闵泽宇; 朱峰林
Original assignee: Anhui Lingyu Cable Technology Co Ltd
Current assignee: Anhui Lingyu Cable Technology Co Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-10-08
Anticipated expiration: 2041-06-04
Also published as: CN113488232B

Abstract

The invention discloses a silicone rubber insulated and silicone rubber sheathed flexible cable for a coal mining machine, which belongs to the field of cables and comprises a cable core conductor, an insulating sleeve, a metal shielding sleeve, an inner sheath and an outer sheath, wherein the outer surface of the cable core conductor is sequentially provided with the insulating sleeve and the metal shielding sleeve from inside to outside, the outer surface of the inner sheath is sequentially provided with a special-shaped sleeve, a heat dissipation sleeve, a heat insulation sleeve, a colloid and an outer sheath from inside to outside, a connecting piece is arranged between the inner sheath and the heat insulation sleeve, the connecting piece is uniformly arranged on the special-shaped sleeve in an annular shape, and the outer sheath is connected with the heat insulation sleeve through the colloid. The damage speed of the conductor of the cable core is reduced, and the service life of the cable is guaranteed.

Description

Silicone rubber insulation and silicone rubber sheath flexible cable for coal mining machine

Technical Field

The invention relates to the field of cables, in particular to a silicone rubber insulation and silicone rubber sheath flexible cable for a coal mining machine.

Background

The cable jacket is the outermost layer of the cable and serves as the most important barrier in the cable for maintaining the safety of the internal structure, and the cable is not mechanically damaged during and after installation. Cable jackets are not intended to replace reinforcing armour inside cables, but they can offer a reasonably high level but limited means of maintenance. In addition, the cable jacket also provides moisture, chemical, ultraviolet, and ozone maintenance.

The cable sheath is made of polyvinyl chloride, polyurethane, silicone rubber, or the like. When the silicone rubber sheath is used as a sheath of a cable of a coal mining machine, the silicone rubber can be used in a working environment of-60 ℃ to +200 ℃ for a long time, and has the advantages of transparency, no toxicity, no odor, good insulating property and good processability. However, because of poor tear resistance, when the cable sheath is used as a cable sheath, in the long-term insolation process, the outer surface of the silicone rubber sheath is easily torn due to the conditions of insolation, aging and the like, so that the core conductor of the cable is directly damaged, and the service life of the cable is shortened.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to solve the technical problems that a silicone rubber insulation and silicone rubber sheath flexible cable for a coal mining machine is provided, and the problems that a core conductor of the cable is damaged directly and the service life of the cable is shortened due to the fact that the outer surface of a silicone rubber sheath of the cable is torn easily under the conditions of exposure, aging and the like in the long-term exposure process.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a coal-winning machine is with silicon rubber insulation and silicon rubber sheath flexible cable, includes cable core conductor, insulating cover, metallic shield, inner sheath and oversheath, cable core conductor surface is equipped with insulating cover and metallic shield from inside to outside in proper order, be equipped with the guide pin bushing between the cable core conductor is adjacent, the inner sheath surface is equipped with special-shaped cover, heat dissipation cover, heat insulating sleeve, colloid and oversheath from inside to outside in proper order, be equipped with the connecting piece between inner sheath and the heat insulating sleeve, the connecting piece is the annular and evenly locates on the special-shaped cover, the oversheath passes through the colloid and is connected with the heat insulating sleeve, the inner sheath inboard is equipped with the filler.

Preferably, the special-shaped sleeve is uniformly provided with a hollow groove, and a cotton sliver is arranged in the hollow groove.

Preferably, the connecting member is provided between adjacent tampons.

Preferably, the inner and outer end portions of the connector are provided on the inner sheath and the thermal insulation sheath, respectively.

Preferably, the heat dissipation sleeve is glued to the outer side face of the special-shaped sleeve.

Preferably, the heat insulation sleeve is arranged on the inner side of the outer sheath, and the colloid is uniformly arranged on the outer side surface of the heat insulation sleeve.

Preferably, the inner end face and the outer end face of the connecting piece are both arc-shaped faces.

3. Advantageous effects

(1) According to the invention, the inner side of the outer sheath made of the silicon rubber is connected with the heat insulation sleeve through the colloid, when the silicon rubber sheath is exposed to sunlight or aged after long-term use and cracks are generated on the outer surface of the silicon rubber sheath, the heat insulation sleeve can generate an inward acting force through the pulling force provided by the connector from inside to outside, and as the silicon rubber sheath and the heat insulation sleeve are uniformly connected through the colloid, when the silicon rubber sheath of the cable cracks under external force, the pulling force can reduce the cracking degree of the silicon rubber sheath, the damage speed of a conductor of a cable core caused by the damage of the silicon rubber sheath is reduced, and the service life of the cable is ensured;

(2) according to the invention, the special-shaped sleeve and the foam strips are arranged, the hollow groove on the special-shaped sleeve is filled with the plurality of foam strips, the foam strips can be made of expanded polystyrene, and the expanded polystyrene has the characteristics of low thermal conductivity, small water absorption, impact vibration resistance, heat insulation and the like, so that the expanded polystyrene can be used together with the special-shaped sleeve, and the impact resistance and the extrusion resistance of the cable can be improved;

(3) according to the invention, the heat dissipation sleeve is arranged on the outer side surface of the special-shaped sleeve, and the heat dissipation sleeve is made of the graphene heat radiation patch, so that the heat density of a heating source (namely high temperature generated by cable insolation) can be effectively reduced, large-area rapid heat transfer and large-area heat dissipation are achieved, the shape of the heat dissipation sleeve can be punched to be in a shape consistent with that of the special-shaped sleeve, and the high temperature resistance of the cable is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of the M-position structure of the present invention;

FIG. 3 is a schematic view of the structure of the special-shaped sleeve of the present invention;

FIG. 4 is a schematic view of the construction of the outer jacket, gel and heat shield of the present invention;

FIG. 5 is a schematic view of the connection of the insulating sleeve and the connecting member of the present invention.

Reference numerals: 1. a cable core conductor; 2. an insulating sleeve; 3. a metal shielding sleeve; 4. a guide sleeve; 5. an inner sheath; 6. a connecting member; 7. a heat insulating sleeve; 8. a colloid; 9. an outer sheath; 10. a filler; 11. a special-shaped sleeve; 12. a heat dissipation sleeve; 13. a tampon.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention is shown: a silicone rubber insulation and silicone rubber sheath flexible cable for a coal mining machine comprises a cable core conductor 1, an insulation sleeve 2, a metal shielding sleeve 3, an inner sheath 5 and an outer sheath 9, wherein the insulation sleeve 2 and the metal shielding sleeve 3 are sequentially arranged on the outer surface of the cable core conductor 1 from inside to outside, a guide sleeve 4 is arranged between the adjacent cable core conductors 1, the guide sleeve 4 can be made of rubber, the cable core conductor 1 is placed in the guide sleeve 4 by arranging the guide sleeve 4 in a mutual groove corresponding to the appearance of the cable core conductor 1, and in the using process, the position shaking of the cable core conductor 1 can be effectively reduced, and the using effect of the cable is guaranteed;

the outer surface of the inner sheath 5 is sequentially provided with a special-shaped sheath 11, a heat dissipation sheath 12, a heat insulation sheath 7, a colloid 8 and an outer sheath 9 from inside to outside, the special-shaped sheath 11 is made of rubber, so that the shape of the special-shaped sheath is easy to process, the rubber has elasticity, a plurality of hollow grooves are formed in the special-shaped sheath 11, the hollow grooves are filled with expanded polystyrene, the expanded polystyrene has the characteristics of low heat conductivity, small water absorption, impact vibration resistance, heat insulation and the like, the expanded polystyrene is used together with the special-shaped sheath 11, the impact resistance and the extrusion resistance of a cable can be improved, a connecting piece 6 is arranged between the inner sheath 5 and the heat insulation sheath 7, the connecting piece 6 consists of an inner arc-shaped block, an outer arc-shaped block and a plug-in piece, the inner arc-shaped block and the outer arc-shaped block are respectively arranged on the inner sheath 5 and the heat insulation sheath 7, the connecting piece 6 sequentially penetrates through the special-shaped sheath 11 and the heat dissipation sheath 12 arranged on the special-shaped sheath 11 from inside to outside, the medial surface of heat dissipation cover 12 closely laminates with the lateral surface of special-shaped cover 11, and the material of heat dissipation cover 12 is graphite alkene heat radiation paster, sets up heat dissipation cover 12, can effectual reduction heating source (the high temperature that the cable insolate the production promptly), reaches the large tracts of land and passes heat fast, and large tracts of land is dispeled the heat, and in addition, its appearance of graphite alkene heat radiation iron sheet also can dash the shape and be the shape unanimous with special-shaped cover 11 appearance, has improved the high temperature resistance performance of cable. The connecting members 6 are arranged between adjacent tampons 13. The tampons 13 and the connectors 6 are arranged alternately and uniformly between the inner sheath 5 and the insulating sheath 7 so as to effectively distribute the forces to which the cable is subjected, the connectors 6 being arranged at the inner and outer ends of the inner sheath 5 and the insulating sheath 7, respectively. The connecting piece 6 is uniformly arranged on the special-shaped sleeve 11 in an annular shape, a hollow groove is uniformly formed in the special-shaped sleeve 11, and a cotton sliver 13 is arranged in the hollow groove. The transversal circular of personally submitting of cavity, and the protruding department of dysmorphism cover 11 is located to the cavity, the inside and outside terminal surface of connecting piece 6 is the arcwall face. The inner end face and the outer end face of the connecting piece 6 are arranged to be arc-shaped, so that the connecting piece can be attached to the inner sheath 5 and the heat insulation sleeve 7 more tightly, the outer sheath 9 is connected with the heat insulation sleeve 7 through the colloid 8, the colloid 8 is evenly coated on the inner side face of the outer sheath 9 and the outer side face of the heat insulation sleeve 7, the colloid 8 can be the glue special for YH-395 rubber, and the inner side of the inner sheath 5 is provided with the filler 10. The filler 10 may be a polypropylene tape, a non-woven fabric, or the like. Must produce the gap at the stranding in-process, if these gaps need not the material packing closely knit, cable core conductor 1 can be unstable, through the supplementary setting of guide pin bushing 4, can improve the life-span of cable in the use, the heat dissipation cover 12 splices in the lateral surface of special-shaped cover 11. The heat insulation sleeve 7 is arranged on the inner side of the outer sheath 9, and the colloid 8 is uniformly arranged on the outer side surface of the heat insulation sleeve 7.

The working principle is as follows: when the silicone rubber insulated and silicone rubber sheathed flexible cable for the coal mining machine is used, most of the flexible cables are used outdoors, when the cable is exposed to sunlight or aged after long-term use and cracks are generated on the outer surface of the cable, the flexible cable is connected with the inner sheath 5 through the connecting piece 6, when the outer sheath 9 on the outer side of the cable cracks, the outer side of the sheath made of the silicone rubber starts to have a tendency of opening towards two sides, as shown in figure 4 of the attached drawing of the specification, the inner side of the flexible cable is connected with the heat insulation sleeve 7 through the colloid 8, when the outer side cracks, the inner side of the flexible cable is provided with pulling force from inside to outside through the connecting piece 6, the heat insulation sleeve 7 can generate inward acting force, and because the silicone rubber sheaths, namely the heat insulation sleeve 9 and the heat insulation sleeve 7 are uniformly connected through the colloid 8, when the outer sheath of the silicone rubber sheath of the cable cracks due to external force, the pulling force can reduce the cracking degree of the silicone rubber sheaths, the probability of damage to the conductor of the cable core caused by damage to the silicone rubber sheath is reduced.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a coal-winning machine is with silicon rubber insulation and silicon rubber sheath flexible cable, includes cable core conductor (1), insulating cover (2), metallic shield cover (3), inner sheath (5) and oversheath (9), its characterized in that: cable core conductor (1) surface is equipped with insulator (2) and metallic shield (3) from inside to outside in proper order, be equipped with guide pin bushing (4) between cable core conductor (1) is adjacent, inner sheath (5) surface is equipped with dysmorphism cover (11), heat dissipation cover (12), heat insulating jacket (7), colloid (8) and oversheath (9) from inside to outside in proper order, be equipped with connecting piece (6) between inner sheath (5) and heat insulating jacket (7), connecting piece (6) are the annular and evenly locate on dysmorphism cover (11), oversheath (9) are connected with heat insulating jacket (7) through colloid (8), inner sheath (5) inboard is equipped with filler (10).

2. The silicone rubber insulation and silicone rubber sheath flexible cable for the coal mining machine as claimed in claim 1, wherein the special-shaped sheath (11) is uniformly provided with hollow grooves, and foam strips (13) are arranged in the hollow grooves.

3. The silicone rubber insulation and silicone rubber sheathed flexible cable for coal mining machines according to claim 2, characterized in that the connecting piece (6) is arranged between adjacent tampons (13).

4. The silicone rubber insulated and rubber sheathed flexible cable for coal mining machines according to claim 1, wherein the inner and outer end portions of the connector (6) are respectively provided on the inner sheath (5) and the heat insulating sheath (7).

5. The silicone rubber insulation and silicone rubber sheathed flexible cable for coal mining machines according to claim 1, characterized in that the heat dissipation sleeve (12) is glued to the outer side surface of the profile sleeve (11).

6. The silicone rubber insulation and silicone rubber sheathed flexible cable for the coal mining machine as claimed in claim 1, wherein the heat insulation sleeve (7) is arranged at the inner side of the outer sheath (9), and the colloid (8) is uniformly arranged at the outer side surface of the heat insulation sleeve (7).

7. The silicone rubber insulation and silicone rubber sheathed flexible cable for coal mining machines according to claim 1, wherein the inner and outer end surfaces of the connecting piece (6) are both arc-shaped surfaces.