An armored cable with good restorability

Abstract

The present invention relates to the technical field of cables, and particularly to an armored cable with good resilience, including a cable inner core; an isolation component arranged on the outer side of the cable inner core; a protection part sleeved on the isolation component, the protection part including a base sleeve and a petal sleeve, and six sharp-angle-shaped protrusions are arranged on the petal sleeve and protrude outward. When subjected to axial tension, the base sleeve and the petal sleeve are integrally formed. When the base sleeve and the petal sleeve are subjected to axial tension, due to the arrangement of the tensile ropes, the tensile ropes remain in a taut state inside. The tensile ropes are arranged axially and surround the base sleeve, and can evenly distribute the tension. Moreover, in the taut state, the tensile ropes deform first. Here, when the base sleeve is subjected to tension, since insertion openings are formed between the spaced metal sheets, in this way, the entire base sleeve can deform axially, and the insertion openings provide space for deformation. In addition, the axe body part and the axe head part form a heat conduction bridge for conducting the heat inside to the outside.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and particularly to an armored cable with good restoration properties. Background Art

[0002] An armored cable is a cable with a metal protective layer and is usually used in environments that require additional protection. It consists of a conductor, an insulating layer, a metal sheath (usually steel wire or aluminum alloy), and an outer sheath. The metal sheath provides mechanical protection for the cable, preventing the cable from being physically damaged or pulled externally, and is usually used in industries, construction, oil, natural gas, etc., especially in environments where mechanical damage is likely to occur.

[0003] The applicant found during cable laying that after the axial direction of the cable adopts a filling method, the axial deformation coefficient is small. In this way, the metal layer and the filling layer will axially contract under tension at the tension concentration point. As a result, the internal filling layer moves to both sides of the force component, and the overall state is damaged. Especially when wiring the cable, it is necessary to process the internal armored part and the filling part, and a connecting protective sleeve is used for repair after wiring, which is troublesome to operate and costly. Summary of the Invention

[0004] The purpose of the present invention is to provide an armored cable with good restoration properties, which has the advantages of good compressive performance, excellent compressive performance, and optimal reparability, and is convenient for wiring operation.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An armored cable with good restoration properties, comprising:

[0006] A cable inner core;

[0007] An isolation component arranged outside the cable inner core;

[0008] A protective part sleeved on the isolation component. The protective part includes a base sleeve and a petal sleeve. Six sharp-angle-shaped protrusions are arranged on the petal sleeve and protrude outward. An arc part is arranged between two adjacent sharp-angle-shaped protrusions, and the centers of the six arc parts coincide with the axis of the protective part. A plurality of insertion openings are equidistantly arranged along the axial direction on the surface of the arc part;

[0009] A protective strip attached to the arc part. The inner wall of the protective strip contacts the surface of the arc part, and a plurality of insertion strips are arranged on the protective strip. The insertion strips are inserted into the insertion openings, the end of the insertion strip contacts the surface of the isolation component, and a compensation layer is arranged on the outer surfaces of the plurality of protective strips, and the plurality of compensation layers form a columnar outer surface layer;

[0010] An editable mesh sleeve is arranged on the plurality of protective strips and is restricted by the cable outer layer.

[0011] Further, a clearance layer is reserved between the outer layer of the cable and the plurality of compensation layers, and the editable mesh sleeve is arranged in the clearance layer.

[0012] Further, the inner core of the cable includes a protective sleeve, an elastic drawstring is arranged at the axis center of the protective sleeve, a plurality of correction mechanisms are arranged on the elastic drawstring at equal intervals along the axial direction, a plurality of single-wire cables arranged in a petal shape are arranged on the correction mechanisms at equal intervals, and the single-wire cable includes an oval wire sleeve and a plurality of cables arranged in the oval wire sleeve.

[0013] Further, the correction mechanism includes a metal base, and a plurality of adaptation grooves recessed towards the axis center to form a semi-oval shape are arranged on the metal base at equal intervals, and the oval wire sleeve is fixedly connected in the adaptation groove;

[0014] It further includes a force dividing plate, the number of the force dividing plates is five, the five force dividing plates are respectively arranged between two adjacent oval wire sleeves, and the edge of the bottom of the force dividing plate is higher than the outside of the center of the oval wire sleeve.

[0015] Further, the insertion port is formed by a plurality of metal sheets arranged at equal intervals, the shape of the metal sheet is ax-shaped, the metal sheet includes an ax head part arranged radially outwards and an ax body part arranged radially inwards, and a plurality of expansion ports formed by the metal sheets are reserved on the inner wall of the base sleeve.

[0016] Further, an axially penetrating channel is arranged on the petal sleeve, and a tensile rope is arranged through the axially penetrating channel.

[0017] Further, the insertion strip includes a plurality of adaptation plug rows with the same shape as the metal sheet and arranged in the opposite direction, the outer sides of the plurality of adaptation plug rows are connected in a strip shape, and the tips of the adaptation plug rows are located in the expansion ports.

[0018] Further, the compensation layer is a plurality of arc-shaped compressive strip plates, and the plurality of arc-shaped compressive strip plates form a whole through a transition layer.

[0019] Further, the isolation component includes a metal sleeve, a jump groove is arranged on the metal sleeve at the position of the insertion port, and the jump groove is connected with a metal plate through a silica gel layer.

[0020] Further, the editable mesh sleeve includes a columnar wire mesh sleeve formed by braiding annular wires and axial wires, and spiral separation steel wires are embedded on the columnar wire mesh sleeve.

[0021] The technical effects and advantages of the present invention:

[0022] 1. The correction mechanism is set up so that multiple single-wire cables can be restricted to be integrated into a metal sleeve. The metal sleeves are axially spaced apart, providing deformation space for axial pulling. Also, adjacent metal sleeves in the axial direction can be elastically connected into one body by springs. Moreover, when the elliptical wire sleeve is axially compressed, the matching groove can stabilize the degree of deformation of the elliptical wire sleeve and always maintain a stable state after reset.

[0023] 2. The force-dividing plate is provided. The force-dividing plate can be an integral plate in the axial direction or multiple end plates axially spaced apart. Its function is to make multiple single-wire cables integrated as a whole in a circular state. Additionally, when subjected to radial compression, the force-dividing plate has a corrective effect and can control the deformation state of the elliptical wire sleeve to prevent internal fracture caused by cable friction due to excessive compression of the elliptical wire sleeve.

[0024] 3. The elastic pull rope is arranged in the axial direction and remains in a relaxed state. In this way, when deformed by axial tension, it has room for movement, which can improve the axial tensile strength of the cable.

[0025] 4. The metal sleeve fits on the outer surface of the protective sleeve. The metal plate is used to support the socket. After the socket enters, it forms a butting state with the metal plate. Under the action of the silicone layer, when the cable is subjected to radial pressure, the silicone layer can cause the metal plate to deform. After deformation, the pressure can be eliminated to a certain extent to protect the internal structure. Additionally, it can provide a reverse force for radial recovery to avoid local compression deformation of the cable.

[0026] 5. When subjected to axial tension, the base sleeve and the petal sleeve are integrally formed. When the base sleeve and the petal sleeve are subjected to axial tension, due to the setting of the tensile rope, the tensile rope remains in a taut state inside. The tensile rope is arranged axially and surrounds the base sleeve, which can evenly distribute the tension. And in the taut state, the tensile rope deforms first. Here, when the base sleeve receives tension, since insertion openings are formed between the axially spaced metal sheets, in this way, the entire base sleeve can deform axially, and the insertion openings provide deformation space. In addition, the axe body part and the axe head part form a heat conduction bridge for conducting the internal heat to the outside.

[0027] 6. When subjected to axial tension, the axe body part and the axe head part will contact the socket arranged in the opposite direction. The shape of the socket is the same as that of the metal sheet. In this way, the inclined surfaces of the two are mutually extruded to form a guiding effect, causing the socket to move radially outward. In this way, a part of the radially inward pressure can be offset, which can improve the anti-deformation ability and prevent the force concentration point from causing cable deformation due to force.

[0028] 7. When wiring the cable, the protective part can be repaired. The protective part at one end of a cable is peeled off to inside the protective strip, that is, the reserved length of the protective strip of one cable is longer than the protective part, and the reserved length of the protective part of the other cable is longer than the protective strip. After connecting multiple cables, at this time, the protective part of the cable with a longer reservation is butted against the protective part of the cable with a shorter reservation. At this time, the insertion strip on the protective strip can be inserted into the reserved insertion port on the other cable, forming a new wiring state with a complete surface and the compensation layers pasted on opposite sides. After wiring these cables, the surface of the joint section is the same as the surface of the cable and is in a smooth state, without the need for an external connector for safety, with convenient wiring, good protective effect, and good aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the present invention;

[0030] Figure 2 Schematic diagram of the compensation layer in the present invention;

[0031] Figure 3 Exploded view of the protective strip in the present invention;

[0032] Figure 4 Stereogram of the base sleeve in the present invention;

[0033] Figure 5 Schematic diagram of the protective sleeve in the present invention;

[0034] Figure 6 Schematic diagram of the oval wire sleeve and the force dividing plate in the present invention;

[0035] Figure 7 Schematic diagram of the isolation component in the present invention;

[0036] Figure 8 Schematic diagram of the editable mesh sleeve in the present invention;

[0037] Figure 9 Schematic diagram of the insertion port, metal sleeve and protective sleeve in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0039] Existing armored cables mainly add metal components inside the cable core, such as steel wires, anti-pull ropes, multi-layer anti-pull mesh sleeves, etc. to enhance the anti-tensile effect. However, this method will reduce the radial compressive capacity. When the cable is subjected to radial pressure, the internal metal components will deform. Although it will not cause much damage to the internal cables, when the subsequent axial tension is applied to the cable due to the radial pressure, the filling at the radial tension point will become loose and voids will appear, and damage will also occur at the compression point. In addition, for cable wiring, cable connectors are used to fix the connector cables, which is costly and troublesome to operate.

[0040] The present solution designs a new internal wiring method for the cable, so that when the cable is subjected to radial pressure, subsequent axial tension will not cause damage at the stress points, and this part is a replaceable design. When connecting the cables, the position where the cable is peeled off from the connector can be restored, and the reparability is good.

[0041] Such as Figures 1 to 9 shown, an armored cable with good restorability includes:

[0042] Regarding the cable inner core 1;

[0043] The cable inner core 1 includes a protective sleeve 11. An elastic pull rope 17 is arranged at the axis center of the protective sleeve 11. A plurality of correcting mechanisms are arranged on the elastic pull rope 17 at equal intervals in the axial direction. A plurality of single-wire cables arranged in a petal shape are arranged at equal intervals on the correcting mechanism. The single-wire cable includes an oval wire sleeve 14 and a plurality of cables 16 arranged in the oval wire sleeve 14.

[0044] The correcting mechanism includes a metal base 12. Adaptation grooves 13 formed by concave inward towards the axis center are arranged on the metal base 12 at equal intervals along the circular direction. The oval wire sleeve 14 is fixedly connected in the adaptation grooves 13;

[0045] It further includes five force dividing plates 15. The five force dividing plates 15 are respectively arranged between two adjacent oval wire sleeves 14, and the edge of the bottom of the force dividing plate 15 is higher than the outside of the center of the oval wire sleeve 14.

[0046] The oval wire sleeve 14 on the single-wire cable has a state of facing outward along the axis center. The oval wire sleeve 14 is made of a rigid insulating material. In this way, when subjected to radial pressure, the self-deformation of the oval wire sleeve 14 causes compression, which can provide moving space for the plurality of internal cables 16. Of course, according to the stress characteristics, the oval wire sleeve 14 can provide a longer deformation distance. The plurality of internal cables 16 are arranged in sequence according to the length diameter of the oval wire sleeve 14. Of course, foaming materials or elastic materials can be filled in the oval wire sleeve 14, or circular holes just large enough for the cables 16 to pass through can be arranged in the oval wire sleeve 14;

[0047] The correction mechanism is arranged such that multiple single-wire cables can be restricted to be integrated with the metal base 12, and the metal bases 12 are axially spaced apart, which can provide deformation space for axial pulling, and can enable the spring elastic connection of two adjacent metal bases 12 in the axial direction to be integrated. Moreover, when the oval wire sleeve 14 is axially compressed, the fitting groove 13 can stabilize the degree of deformation of the oval wire sleeve 14 and always maintain a stable state after reset.

[0048] The setting of the force dividing plate 15, the force dividing plate 15 can be an integral plate in the axial direction or multiple end plates axially spaced apart. Its function is to make multiple single-wire cables integral in the annular state. Additionally, when subjected to radial compression, the force dividing plate 15 has a correction effect and can control the deformation state of the oval wire sleeve 14 to prevent internal fracture caused by friction of the cable 16 due to excessive compression of the oval wire sleeve 14.

[0049] The elastic pull rope 17 is arranged in the axial direction and remains in a relaxed state. In this way, when deformed under axial tension, it has a margin of movement, which can improve the axial tensile resistance of the cable.

[0050] Inert gas can be dot-impacted inside the protective sleeve 11, and a metal layer or metal material is provided on the protective sleeve 11 for heat conduction. Because filling with gas can, to a certain extent, improve the compressive capacity, and the gas has a heat preservation effect. Of course, if the protective sleeve 11 is filled with gas, an isolation layer can be intermittently arranged in the inner cavity to axially divide it into multiple chambers to prevent the gas from moving out.

[0051] The isolation component 8 arranged outside the cable inner core 1, the isolation component 8 includes a metal sleeve 81, and a jumping groove 82 is opened at the position of the insertion port 24 on the metal sleeve 81, and the jumping groove 82 is connected with a metal plate 83 through a silica gel layer;

[0052] The metal sleeve 81 is attached to the outer surface of the protective sleeve 11, and the metal plate 83 is used to support the socket strip 32. After the socket strip 32 enters, it forms a state of abutting against the metal plate 83. Under the action of the silica gel layer, when the cable is subjected to radial pressure, the silica gel layer can cause the metal plate 83 to deform. After deformation, the pressure can be eliminated to a certain extent to protect the internal structure. Additionally, a reverse force for radial restoration can be provided to avoid local compression deformation of the cable.

[0053] The protective part 2 sleeved on the isolation component 8, the protective part 2 includes a base sleeve 21 and a petal sleeve 22. Six pointed protrusions 23 protruding outward in a pointed shape are provided on the petal sleeve 22. An arc part is provided between two adjacent pointed protrusions 23. The centers of the six arc parts coincide with the axis of the protective part 2. A plurality of insertion openings 24 are equidistantly arranged on the surface of the arc part along the axis. An axially penetrating channel is provided on the petal sleeve 22, and a tensile rope 25 is penetrated in the axially penetrating channel. The insertion openings 24 are formed by equidistantly arranging a plurality of metal sheets, and the shape of the metal sheet is ax-shaped. The metal sheet includes an ax head part 28 arranged radially outward and an ax body part 27 arranged radially inward. An expansion opening 26 formed by a plurality of metal sheets is reserved on the inner wall of the base sleeve 21;

[0054] Specifically, the following description is made for the protective part 2;

[0055] When subjected to an axial tensile force, the base sleeve 21 and the petal sleeve 22 are integrally formed. When the base sleeve 21 and the petal sleeve 22 are subjected to an axial tensile force, due to the setting of the tensile rope 25, the tensile rope 25 remains in a taut state inside. The tensile rope 25 is arranged axially and surrounds the base sleeve 21, and can evenly distribute the tensile force. And in the taut state, the tensile rope 25 deforms first. Here, when the base sleeve 21 is subjected to a tensile force, since the insertion openings 24 are formed between the metal sheets arranged at intervals, in this way, the entire base sleeve 21 can deform axially, and the insertion openings 24 provide space for deformation. In addition, the ax body part 27 and the ax head part 28 form a heat conduction bridge for conducting the heat inside to the outside;

[0056] It should be emphasized that when subjected to an axial tensile force, the ax body part 27 and the ax head part 28 will contact the opposite plug row 32. The shape of the plug row 32 is the same as that of the metal sheet. In this way, the inclined surfaces of the two are mutually extruded to form a guiding effect, so that the plug row 32 moves radially outward. In this way, a part of the radially inward pressure can be offset, and in this way, the anti-deformation ability can be improved, so that the force concentration point will not cause the cable to deform due to force.

[0057] When subjected to a radial pressure, the thick end of the plug row 32 contacts the thin end of the metal sheet, and when moving radially inward, the base sleeve 21 can press the petal sleeves 22 on both sides to both sides, and the remaining pressure towards the axis is dispersed between a plurality of plug rows 32 and metal sheets, so that the pulling and compression resistance effects are better.

[0058] In addition to the above effects, the protective strip 3 attached to the arc portion has the inner wall of the protective strip 3 in contact with the surface of the arc portion. A plurality of insertion strips 33 are provided on the protective strip 3, and the insertion strips 33 are inserted into the insertion openings 24. The end of the insertion strip 33 is in contact with the surface of the isolation component 8. A compensation layer 4 is provided on the outer surfaces of the plurality of protective strips 3, and the plurality of compensation layers 4 form a columnar outer surface layer. The insertion strip 33 includes a plurality of adaptation inserts 32 having the same shape as the metal sheet and arranged in opposite directions, and the outer sides of the plurality of adaptation inserts are connected in a strip shape. The tip of the adaptation insert 32 is located in the expansion opening 26.

[0059] When wiring the cable, the protective part 2 can be repaired. The protective part 2 at one end of a cable is peeled into the protective strip 3, that is, the reserved length of the protective strip 3 of one cable is longer than that of the protective part 2, and the reserved length of the protective part 2 of the other cable is longer than that of the protective strip 3. After connecting a plurality of cables 16, at this time, the protective part 2 of the cable with the longer reserved length is butted against the protective part 2 of the cable with the reserved section. At this time, the insertion strip 33 on the protective strip 3 can be inserted into the reserved insertion opening 24 on the other cable, forming a new wiring state with a complete surface, and the compensation layers 4 are pasted on the opposite sides. After these cables are wired, the joint is the same as the cable surface, and there is no need for an external connector for safety. The wiring is convenient, the protection effect is good, and the aesthetics is excellent.

[0060] The editable mesh sleeve 6 is provided on the plurality of protective strips 3 and is constrained by the cable outer layer 7. A gap layer 5 is reserved between the cable outer layer 7 and the plurality of compensation layers 4, and the editable mesh sleeve 6 is provided in the gap layer 5. The editable mesh sleeve 6 includes a columnar wire mesh sleeve formed by braiding the annular wire 61 and the axial wire 62. The spiral separation steel wire 63 is embedded in the columnar wire mesh sleeve.

[0061] Tear the spiral separation steel wire 63 on the editable mesh sleeve 6, and the spiral separation steel wire 63 can separate the editable mesh sleeve 6 into spiral parts. In this way, the editable mesh sleeve 6 can be separated by tearing by hand or by using tools such as pliers, which is simple and convenient.

[0062] For the convenience of wiring operation, after cutting the transition layer 41, the plurality of arc-shaped compressive strip plates can be separated. It should be noted that the transition layer 41 can be a fine wire mesh embedded in the plurality of arc-shaped compressive strip plates. The compensation layer 4 is the plurality of arc-shaped compressive strip plates, and the plurality of arc-shaped compressive strip plates form an integral body through the transition layer 41.

[0063] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An armored cable with good restorability, characterized in that, Including: The inner core of the cable (1); An isolation component (8) disposed outside the inner core of the cable (1); A protective part (2) sleeved on the isolation component (8), the protective part (2) includes a base sleeve (21) and a petal sleeve (22), six sharp-angled protrusions (23) are provided on the petal sleeve (22) protruding outward, an arc part is provided between two adjacent sharp-angled protrusions (23), and the centers of the six arc parts coincide with the axis of the protective part (2), and a plurality of insertion openings (24) are equidistantly arranged along the axial direction on the surface of the arc part; A protective strip (3) attached to the arc part, the inner wall of the protective strip (3) contacts the surface of the arc part, and a plurality of insertion strips (33) are provided on the protective strip (3), and the insertion strips (33) are inserted into the insertion openings (24), the end of the insertion strip (33) contacts the surface of the isolation component (8), and a compensation layer (4) is provided on the outer surfaces of the plurality of protective strips (3), and the plurality of compensation layers (4) form a columnar outer surface layer; An editable mesh sleeve (6) is disposed on the plurality of protective strips (3) and is constrained by the cable outer layer (7).

2. The armored cable with good resilience according to claim 1, characterized in that, A gap layer (5) is reserved between the cable outer layer (7) and the plurality of compensation layers (4), and the editable mesh sleeve (6) is disposed in the gap layer (5).

3. The armored cable with good resilience according to claim 2, characterized in that, The inner core of the cable (1) includes a protective sleeve (11), an elastic pull rope (17) is disposed at the axis of the protective sleeve (11), a plurality of correction mechanisms are equidistantly arranged along the axis of the elastic pull rope (17), and a plurality of single-wire cables arranged in a petal shape are equidistantly arranged on the correction mechanism. The single-wire cable includes an oval wire sleeve (14) and a plurality of cables (16) disposed in the oval wire sleeve (14).

4. The armored cable with good restorability according to claim 3, characterized in that, The correction mechanism includes a metal base (12), and semi-elliptical fitting grooves (13) recessed inward toward the axis are equidistantly arranged on the metal base (12), and the oval wire sleeve (14) is fixedly connected in the fitting grooves (13); It further includes a force dividing plate (15), the number of the force dividing plates (15) is five, the five force dividing plates (15) are respectively disposed between two adjacent oval wire sleeves (14), and the edge of the bottom of the force dividing plate (15) is higher than the outside of the center of the oval wire sleeve (14).

5. A armored cable with good resilience according to claim 4, characterized in that, The insertion opening (24) is formed by equidistantly spacing a plurality of metal sheets, and the shape of the metal sheet is ax-shaped. The metal sheet includes an ax head part (28) disposed radially outward and an ax body part (27) disposed radially inward, and an expansion opening (26) formed by the plurality of metal sheets is reserved on the inner wall of the base sleeve (21).

6. The armored cable with good restorability according to claim 5, characterized in that, An axially penetrating channel is provided on the petal sleeve (22), and a tensile rope (25) is axially penetrated in the axially penetrating channel.

7. An armored cable with good restorability according to claim 6, characterized in that, The insertion strip (33) includes a plurality of fitting inserts (32) having the same shape as the metal sheet and arranged in the opposite direction, and the outer sides of the plurality of fitting inserts are connected into a strip shape, and the tip of the fitting insert (32) is located in the expansion opening (26).

8. The armored cable with good restorability according to claim 7, characterized in that, The compensation layer (4) is composed of a plurality of arc-shaped compression strip plates, and the plurality of arc-shaped compression strip plates form an integral body through a transition layer (41).

9. The armored cable with good restoration property according to claim 8, characterized in that, The isolation component (8) includes a metal sleeve (81), and a jumping groove (82) is formed in the metal sleeve (81) at the position of the insertion port (24). The jumping groove (82) is connected with a metal plate (83) through a silica gel layer.

10. The armored cable with good resilience according to claim 9, characterized in that, The editable mesh sleeve (6) includes a columnar wire mesh sleeve formed by braiding an annular wire (61) and an axial wire (62), and a spiral separation steel wire (63) is embedded on the columnar wire mesh sleeve.

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