Armored cable with good resilience

Abstract

The invention relates to the technical field of cables, in particular to an armored cable with good resilience, which comprises a cable inner core, the isolation assembly is arranged on the outer side of the cable inner core; the protection part is arranged on the isolation assembly in a sleeving mode, the protection part comprises a base sleeve and a petal sleeve, and the petal sleeve is provided with six protrusions in the shape of sharp corners towards the outer side. When the base sleeve and the petal sleeve are subjected to axial tension, the base sleeve and the petal sleeve are integrally formed, and when the base sleeve and the petal sleeve are subjected to the axial tension, due to the arrangement of the tensile rope, the tensile rope is kept in a tightened state in the interior, the tensile rope is axially arranged around the base sleeve and can equally divide the tension, and in the tightened state, the tensile rope deforms firstly, and when the base sleeve is subjected to the tension, the tensile rope deforms; due to the fact that the inserting opening is formed between the metal sheets arranged at intervals, the whole base sleeve can deform in the axial direction, the inserting opening provides a deformation space, and in addition, the axe body part and the axe opening part form a heat conduction bridge used for conducting internal heat to the outside.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to an armored cable with good resilience. Background Art

[0002] Armored cable is a cable with a metal protective layer, usually used in environments that require additional protection. It consists of a conductor, an insulation 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 external physical damage or pulling. It is usually used in industries, construction, oil, gas and other fields, especially in environments susceptible to mechanical damage.

[0003] The applicant discovered during cable laying that after the cable was filled axially, the axial deformation coefficient was small, so that the metal layer and the filling layer would shrink axially under the tension at the tension concentration point. As a result, the internal filling layer moved to both sides of the force component, thus destroying the overall state. Especially when wiring the cable, it is necessary to process the internal armored part and the filling part, and use a connecting protective cover for repair after wiring, which is cumbersome to operate and has a high cost. Summary of the invention

[0004] The object of the present invention is to provide an armored cable with good resilience, which has the advantages of good compression resistance, good compression resistance and optimal repairability, and is convenient for wiring operation.

[0005] To achieve the above object, the present invention provides the following technical solution: an armored cable with good resilience, comprising:

[0006] Cable core;

[0007] An isolation component disposed 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, the petal sleeve is provided with six outwardly pointed protrusions, an arc portion is provided between two adjacent pointed protrusions, and the centers of the six arc portions coincide with the axis of the protective part, and a plurality of insertion openings are provided on the surface of the arc portion at equal distances along the axial direction;

[0009] A protection strip attached to the arc-shaped portion, wherein the inner wall of the protection strip contacts the surface of the arc-shaped portion, and a plurality of insertion strips are arranged on the protection strip, and the insertion strips are inserted into the insertion opening, and the ends of the insertion strips contact the surface of the isolation component, and a compensation layer is arranged on the outer surfaces of the plurality of protection strips, and the plurality of compensation layers form a columnar outer surface layer;

[0010] The editable grid sleeve is disposed on the plurality of protective strips and is bounded by the cable outer layer.

[0011] Furthermore, a gap layer is reserved between the cable outer layer and the plurality of compensation layers, and the editable grid sleeve is arranged in the gap layer.

[0012] Furthermore, the cable core includes a protective sleeve, an elastic pull rope is arranged on the axis of the protective sleeve, a plurality of correction mechanisms are arranged at equal distances along the axial direction of the elastic pull rope, a plurality of single-wire cables arranged in a petal shape are arranged at equal distances on the correction mechanism, and the single-wire cable includes an elliptical wire sleeve and a plurality of cables arranged in the elliptical wire sleeve.

[0013] Furthermore, the correction mechanism comprises a metal base, on which are arranged at equal distances matching grooves which are concave inwards toward the axis to form a semi-elliptical shape, and the elliptical wire sleeve is fixedly connected in the matching grooves;

[0014] It also includes force distribution plates, the number of which is five, and the five force distribution plates are respectively arranged between two adjacent elliptical wire sleeves, and the edge of the bottom side of the force distribution plate is higher than the outer side of the center of the elliptical wire sleeve.

[0015] Furthermore, the insertion port is formed by a plurality of metal sheets arranged at equal distances, and the shape of the metal sheets is an axe head. The metal sheet includes an axe head mouth portion arranged radially outward, and an axe head body portion arranged radially inward, and the inner wall of the base sleeve is reserved with expansion ports formed by a plurality of metal sheets.

[0016] Furthermore, an axial outer passage is provided on the petal cover, and an anti-tension rope is provided through the axial outer passage.

[0017] Furthermore, the insertion strip comprises a plurality of adapting plug-ins having the same shape as the metal sheet and arranged in opposite directions, and the outer sides of the plurality of adapting plug-ins are connected in a strip shape, and the tip of the adapting plug-in is located in the expansion opening.

[0018] Furthermore, the compensation layer is a plurality of arc-shaped anti-compression strips, and the plurality of arc-shaped anti-compression strips are integrated by transition layers.

[0019] Furthermore, the isolation component includes a metal sleeve, a jump groove is provided on the metal sleeve and located at the insertion port, and the jump groove is connected to the metal plate through a silicone layer.

[0020] Furthermore, the editable mesh sleeve comprises a columnar wire mesh sleeve formed by weaving annular wires and axial wires, and the spiral separation steel wire is embedded in the columnar wire mesh sleeve.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The setting of the correction mechanism enables multiple single-wire cables to be confined in the metal sleeve as a whole, and the metal sleeve is arranged at axial intervals to provide deformation space for axial pulling, and the spring elastic connection between two axially adjacent metal sleeves can be made into one. In addition, when the elliptical wire sleeve is axially compressed, the adapter groove can stabilize the degree of deformation of the elliptical wire sleeve and always keep it in a stable state after resetting.

[0023] 2. Setting of force distribution plate: the force distribution plate can be a whole plate in the axial direction, or multiple end plates distributed in the axial direction at intervals. Its function is to make multiple single-line cables as a whole in a ring state. In addition, when subjected to radial pressure, the force distribution plate has a corrective effect and can control the deformation state of the elliptical wire sleeve to prevent the elliptical wire sleeve from being pressed too deeply and causing internal breakage due to cable friction.

[0024] 3. The elastic pull rope is set in the axial direction and kept in a loose state, so that when it is deformed by axial tension, it has a movable margin, which can improve the axial tensile force of the cable.

[0025] 4. The metal sleeve is attached to the outer surface of the protective sleeve, and the metal plate is used to support the plug strip. After the plug strip is inserted, it forms abutment with the metal plate. Under the action of the silicone layer, when the cable is subjected to radial pressure, the silicone layer can deform the metal plate. After deformation, the pressure can be eliminated to a certain extent to protect the internal structure. In addition, it can provide a reverse force for radial recovery to avoid local compression and deformation of the cable.

[0026] 5. When subjected to axial tension, the base sleeve and the petal sleeve are formed as one piece. When the base sleeve and the petal sleeve are subjected to axial tension, due to the setting of the anti-tension rope, the anti-tension rope remains taut inside. The anti-tension rope is axially arranged around the base sleeve, which can evenly distribute the tension, and in the taut state, the anti-tension rope is deformed first. Here, when the base sleeve receives tension, an insertion port is formed between the spaced metal sheets. In this way, the entire base sleeve can be deformed in the axial direction, and the insertion port provides space for deformation. In addition, the axe body part and the axe mouth part form a heat-conducting bridge for conducting internal heat to the outside.

[0027] 6. When subjected to axial tension, the axe body and the axe mouth will contact the oppositely arranged socket strip. The shape of the socket strip is the same as that of the metal sheet, so that the inclined surfaces of the two squeeze each other to form a guiding effect, causing the socket strip to move radially outward. In this way, part of the radial inward pressure can be offset, thereby improving the ability to resist deformation and concentrating the force so that the cable will not be deformed due to force.

[0028] 7. When wiring the cables, the protective part can be repaired and the protective part of one end of a cable can be peeled off into the protective strip. That is to say, 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 another cable is longer than the protective strip. After connecting multiple cables, the reserved long cable protective part is docked with the reserved short cable protective part. At this time, the insertion strip on the protective strip can be inserted into the reserved insertion port on another cable. At this time, a new wiring state is formed with a complete surface and the compensation layer is pasted on the opposite side. After the cables are connected, the surface of the joint section is the same as the cable surface and is in a smooth state. There is no need for external connectors for safety, convenient wiring, good protection effect and good aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the present invention;

[0030] Figure 2 is a schematic diagram of the compensation layer in the present invention;

[0031] Figure 3 An exploded view of the protection strip of the present invention;

[0032] Figure 4 is a three-dimensional diagram of the base sleeve in the present invention;

[0033] Figure 5 is a schematic diagram of the protective cover in the present invention;

[0034] Figure 6 It is a schematic diagram of the elliptical wire sleeve and the force distribution plate of the present invention;

[0035] Figure 7 is a schematic diagram of an isolation component in the present invention;

[0036] Figure 8 is a schematic diagram of an editable grid sleeve in the present invention;

[0037] Fig. 9 It is a schematic diagram of the insertion port, metal sleeve and protective sleeve in the present invention. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Existing armored cables mainly adopt the method of adding metal parts into the cable core, such as steel wire rope, anti-pull rope, multi-layer anti-pull mesh sleeve, etc. to enhance the tensile resistance, but this method will reduce the radial compressive resistance. When the cable is subjected to radial pressure, the internal metal parts will be deformed. Although it will not cause much damage to the internal cables, the radial pressure will cause the filling to loosen and cause holes when the subsequent cables are subjected to axial tension. In addition, the pressure points will also be damaged. In addition, the cable connectors are used to fix the joint cables for cable wiring. This method is costly and cumbersome to operate.

[0040] The solution itself designs a new internal cable wiring method so that when the cable is subjected to radial pressure, subsequent axial pulling will not cause damage to the stress point. This part is designed to be replaceable, so when the cable connector is connected, the position of the cable stripping connector can be restored, and it has good repairability.

[0041] like Figures 1 to 9 A kind of armored cable with good recovery performance is shown, comprising:

[0042] About the cable core 1;

[0043] The cable core 1 includes a protective sleeve 11, an elastic pull rope 17 is arranged on the axis of the protective sleeve 11, a plurality of correction mechanisms are arranged at equal distances along the axial direction of the elastic pull rope 17, a plurality of single-wire cables arranged in a petal shape are arranged at equal distances on the correction mechanism, and the single-wire cable includes an elliptical wire sleeve 14 and a plurality of cables 16 arranged in the elliptical wire sleeve 14.

[0044] The correction mechanism includes a metal base 12, on which are equidistantly arranged semi-elliptical adapting grooves 13 concave inwardly toward the axis and arranged along a circular direction, and an elliptical wire sleeve 14 is fixedly connected in the adapting groove 13;

[0045] It also includes five force distribution plates 15 , which are respectively arranged between two adjacent elliptical wire sleeves 14 , and the bottom edge of the force distribution plate 15 is higher than the outer side of the center of the elliptical wire sleeve 14 .

[0046] The oval wire sleeve 14 on the single-line cable has a state of facing outward along the axis. The oval wire sleeve 14 is made of hard insulating material. In this way, when subjected to radial pressure, the deformation of the oval wire sleeve 14 itself causes compression, which can provide movement space for the internal multiple cables 16. Of course, according to the characteristics of the force, the oval wire sleeve 14 can provide a longer deformation distance. The internal multiple cables 16 are arranged in sequence according to the length and diameter of the oval wire sleeve 14. Of course, the oval wire sleeve 14 can be filled with foam material or elastic material, and the oval wire sleeve 14 can also be provided with a round hole that just accommodates the cable 16 to pass through;

[0047] The setting of the correction mechanism allows multiple single-line cables to be confined in the metal sleeve 12 as one, and the metal sleeve 12 is arranged axially at intervals to provide deformation space for axial pulling, and can make the axially adjacent metal sleeves 12 spring elastically connected as one. In addition, when the elliptical wire sleeve 14 is axially compressed, the adapter groove 13 can stabilize the degree of deformation of the elliptical wire sleeve 14 and always keep it in a stable state after resetting.

[0048] The force distribution plate 15 can be a whole plate in the axial direction, or multiple end plates distributed at intervals in the axial direction. The function is to make multiple single-line cables an integral whole in a ring state. In addition, when subjected to radial pressure, the force distribution plate 15 has a corrective effect and can control the deformation state of the elliptical wire sleeve 14 to prevent the elliptical wire sleeve 14 from being pressed too deeply and causing internal fracture due to friction of the cable 16;

[0049] The elastic pull cord 17 is arranged in the axial direction and is kept in a loose state, so that when it is deformed by axial tension, it has a movable margin, which can improve the axial tensile force of the cable.

[0050] Inert gas can be ignited in the protective sleeve 11. A metal layer or metal material is provided on the protective sleeve 11 for heat conduction. If filled with gas, the pressure resistance can be improved to a certain extent, but the gas has a thermal insulation effect. Of course, if the protective sleeve 11 is filled with gas, an isolation layer can be intermittently provided in the inner cavity to divide the axial direction into multiple chambers to prevent the gas from moving outward.

[0051] An isolation component 8 is arranged outside the cable core 1, and the isolation component 8 includes a metal sleeve 81, and a jump groove 82 is opened on the metal sleeve 81 and located at the insertion port 24, and the jump groove 82 is connected to a metal plate 83 through a silicone 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 plug strip 32. After the plug strip 32 is inserted, it forms an abutment state with the metal plate 83. Under the action of the silicone layer, when the cable is subjected to radial pressure, the silicone 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. In addition, a reverse force for radial recovery can be provided to avoid local compression and deformation of the cable.

[0053] A protective part 2 is sleeved on the isolation component 8, and the protective part 2 includes a base sleeve 21 and a petal sleeve 22. Six outwardly pointed protrusions 23 are arranged on the petal sleeve 22, and an arc portion is arranged between two adjacent pointed protrusions 23, and the center of the six arc portions coincides with the axis of the protective part 2. A plurality of insertion openings 24 are equidistantly provided on the surface of the arc portion in the axial direction, and an axial outer through-channel is arranged on the petal sleeve 22. A tensile rope 25 is arranged through the axial outer through-channel, and the insertion opening 24 is formed by a plurality of metal sheets arranged at equal distances, and the shape of the metal sheet is an axe, and the metal sheet includes an axe mouth portion 28 arranged radially outward, and an axe body portion 27 arranged radially inward, and an expansion opening 26 formed by a plurality of metal sheets is reserved on the inner wall of the base sleeve 21;

[0054] The protection part 2 is specifically described as follows;

[0055] When subjected to axial tension, 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 axial tension, due to the setting of the anti-tension rope 25, the anti-tension rope 25 is kept in a tight state inside. The anti-tension rope 25 is arranged axially and around the base sleeve 21, and the tension can be evenly distributed. In the tight state, the anti-tension rope 25 is deformed first. Here, when the base sleeve 21 is subjected to tension, the insertion opening 24 is formed between the metal sheets arranged at intervals. In this way, the entire base sleeve 21 can be deformed in the axial direction, and the insertion opening 24 provides a space for deformation. In addition, the axe body part 27 and the axe mouth part 28 form a heat conduction bridge for conducting the internal heat to the outside.

[0056] The key point is that when subjected to axial tension, the axe body portion 27 and the axe mouth portion 28 will contact the oppositely arranged socket strip 32, and the shape of the socket strip 32 is the same as the shape of the metal sheet, so that the inclined surfaces of the two squeeze each other to form a guiding effect, causing the socket strip 32 to move radially outward, thereby offsetting a portion of the radially inward pressure, thereby improving the ability to resist deformation, and making the force concentration point so that the cable will not be deformed due to force.

[0057] When subjected to radial pressure, the thick end of the plug-in row 32 contacts the thin end of the metal sheet, and when moving radially inward, the base sleeve 21 can distribute the pressure of the petal sleeves 22 along both sides to both sides, and the remaining pressure toward the axis is dispersed between multiple plug-in rows 32 and the metal sheet, so that the pulling and pressure resistance effects are better.

[0058] In addition to the above effects, the protective strip 3 is attached to the arc-shaped part, and the inner wall of the protective strip 3 contacts the surface of the arc-shaped part, and a plurality of insertion strips 33 are arranged on the protective strip 3, and the insertion strips 33 are inserted into the insertion port 24, and the end of the insertion strip 33 contacts the surface of the isolation component 8, and the outer surfaces of the plurality of protective strips 3 are provided with a compensation layer 4, and the plurality of compensation layers 4 form a columnar outer surface layer, and the insertion strip 33 includes a plurality of adapter plug-ins 32 which are the same shape as the metal sheet and are arranged in the opposite direction, and the outer sides of the plurality of adapter plug-ins are connected in a strip shape, and the tip of the adapter plug-in 32 is located in the expansion port 26.

[0059] When wiring the cables, the protective part 2 can be repaired and the protective part 2 at one end of a cable can be peeled off into the protective strip 3. That is to say, the reserved length of the protective strip 3 of one cable is longer than the protective part 2, and the reserved length of the protective part 2 of another cable is longer than the protective strip 3. After connecting multiple cables 16, the reserved long cable protective part 2 is docked with the reserved section of the cable protective part 2. At this time, the insertion strip 33 on the protective strip 3 can be inserted into the reserved insertion port 24 on the other cable. At this time, a new wiring state is formed, the surface is complete, and the compensation layer 4 is pasted on the opposite side. After the cables are connected, the joints are the same as the cable surface, and there is no need for external connectors for safety. The wiring is convenient, the protection effect is good, and the aesthetics is good.

[0060] The editable mesh sleeve 6 is arranged on the plurality of protection strips 3 and is bounded 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 arranged in the gap layer 5. The editable mesh sleeve 6 includes a columnar wire mesh sleeve woven by annular wires 61 and axial wires 62, and a spiral separation steel wire 63 is embedded in the columnar wire mesh sleeve.

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

[0062] In order to facilitate wiring operations, multiple arc-shaped anti-compression strips can be separated by cutting the transition layer 41. It should be noted that the transition layer 41 can be a fine steel wire mesh buried in multiple arc-shaped anti-compression strips. The compensation layer 4 is a plurality of arc-shaped anti-compression strips, and the multiple arc-shaped anti-compression strips are formed as a whole through the transition layer 41.

[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An armored cable with good resilience, characterized in that: include: Cable core (1); An isolation component (8) arranged outside the cable inner core (1); A protective part (2) sleeved on the isolation component (8), the protective part (2) comprising a base sleeve (21) and a petal sleeve (22), the petal sleeve (22) being provided with six outwardly pointed protrusions (23), an arc portion being provided between two adjacent pointed protrusions (23), the centers of the six arc portions being coincident with the axis of the protective part (2), and a plurality of insertion openings (24) being provided on the surface of the arc portion at equal distances along the axial direction; A protection strip (3) is attached to the arc-shaped portion, the inner wall of the protection strip (3) is in contact with the surface of the arc-shaped portion, a plurality of insertion strips (33) are provided on the protection strip (3), and the insertion strips (33) are inserted into the insertion opening (24), the ends of the insertion strips (33) are in contact with the surface of the isolation component (8), and a compensation layer (4) is provided on the outer surfaces of the plurality of protection strips (3), and the plurality of compensation layers (4) form a columnar outer surface layer; The editable grid sleeve (6) is arranged on the plurality of protection strips (3) and is bounded 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 grid sleeve (6) is arranged in the gap layer (5).

3. The armored cable with good resilience according to claim 2, characterized in that: The cable core (1) comprises a protective sleeve (11), the axis of the protective sleeve (11) is provided with an elastic pull rope (17), the elastic pull rope (17) is provided with a plurality of correction mechanisms at equal distances in the axial direction, a plurality of single-wire cables arranged in a petal shape are provided at equal distances on the correction mechanisms, and the single-wire cables comprise an elliptical wire sleeve (14), and a plurality of cables (16) arranged in the elliptical wire sleeve (14).

4. The armored cable with good resilience according to claim 3, characterized in that: The correction mechanism comprises a metal base (12), on which are equidistantly arranged adaptation grooves (13) which are concave inwardly toward the axis to form a semi-elliptical shape, and the elliptical wire sleeve (14) is fixedly connected in the adaptation groove (13); It also includes force distribution plates (15), the number of which is five. The five force distribution plates (15) are respectively arranged between two adjacent elliptical wire sleeves (14), and the edge of the bottom side of the force distribution plate (15) is higher than the outer side of the center of the elliptical wire sleeve (14).

5. The armored cable with good resilience according to claim 4, characterized in that: The insertion opening (24) is formed by a plurality of metal sheets arranged at equal distances, and the shape of the metal sheets is an axe head. The metal sheet comprises an axe head opening portion (28) arranged radially outward, and an axe head body portion (27) arranged radially inward. The inner wall of the base sleeve (21) is reserved with expansion openings (26) formed by a plurality of metal sheets.

6. The armored cable with good resilience according to claim 5, characterized in that: The petal cover (22) is provided with an axial outer passage, and a tensile rope (25) is provided through the axial outer passage.

7. The armored cable with good resilience according to claim 6, characterized in that: The insertion strip (33) comprises a plurality of adapting plug-ins (32) having the same shape as the metal sheet and arranged in opposite directions, and the outer sides of the plurality of adapting plug-ins are connected to form a strip, and the tip of the adapting plug-in strip (32) is located in the expansion opening (26).

8. The armored cable with good resilience according to claim 7, characterized in that: The compensation layer (4) is a plurality of arc-shaped compression-resistant strips, and the plurality of arc-shaped compression-resistant strips are connected to form a whole through a transition layer (41).

9. The armored cable with good resilience according to claim 8, characterized in that: The isolation component (8) comprises a metal sleeve (81), a jump groove (82) is provided on the metal sleeve (81) and located at the insertion port (24), and the jump groove (82) is connected to a metal plate (83) via a silicone layer.

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

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