CN115083671A

CN115083671A - Long-life safety environmental protection does not have steamed low fire-retardant crosslinked polyolefin insulated cable of cigarette

Info

Publication number: CN115083671A
Application number: CN202210688407.2A
Authority: CN
Inventors: 徐永忠; 赵伟民; 凌雷
Original assignee: Zhejiang Jiusheng Cross Linked Cable Co ltd
Current assignee: Zhejiang Jiusheng Cross Linked Cable Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-09-20
Anticipated expiration: 2042-06-17
Also published as: CN115083671B

Abstract

The invention relates to the technical field of cables, and discloses a long-life, safe, environment-friendly, halogen-free, low-smoke, flame-retardant and cross-linked polyolefin insulated cable which comprises a cable body and a cable assembly arranged at the end part of the cable body; the cable body comprises a cable inner core and a cable outer skin layer coated outside the cable inner core; the cable outer skin layer comprises a framework and a silicon rubber insulating layer coated on the framework; the cable assembly comprises a pipe body, and a pipe cavity for the cable body to penetrate through is formed in the pipe body; the one end opening part of lumen is equipped with the ring channel along the body axial, has evenly laid 4 blades along body circumference in the ring channel, and 4 blades all set up and are used for cutting the cortex of cable body along the body axial, and the ring channel lies in evenly to be equipped with 4 outer guide ways of communicating pipe along body circumference on the diapire of the inside department of lumen, and the guide way is used for exporting the body with the cortex of the cable body between adjacent blade. Through above-mentioned structure for when the cable obtains the protection, be convenient for cut the cable skin layer.

Description

Long-life safety environmental protection does not have steamed low fire-retardant crosslinked polyolefin insulated cable of cigarette

Technical Field

The invention relates to the technical field of cables, in particular to a long-life, safe, environment-friendly, halogen-free, low-smoke, flame-retardant and cross-linked polyolefin insulated cable.

Background

The existing cable generally comprises a wire core and an insulating layer coated outside the wire core, and when the cable is in actual use, in order to increase the applicable scene of the cable, a protective layer is usually added outside the insulating layer, for example, a galvanized steel strip, a steel wire or a copper strip, a copper wire and the like are used as armors to be coated outside the insulating layer, so that the cable is preferably protected, but the galvanized steel strip, the steel wire or the copper strip, the copper wire and the like have poor toughness, are easy to shape after being impacted, cannot be well reset and kept in an original shape, and influence the use; meanwhile, when the existing cable is used, the insulating layer at the end part of the cable is usually stripped, so that the cable core leaks, then the existing cable joint is installed on the cable core, however, the insulating layer stripping of the cable with the armored layer is very inconvenient, and the use of the cable is affected.

Disclosure of Invention

Aiming at certain defect or defects in the prior art, the invention provides a long-life, safe, environment-friendly, halogen-free, low-smoke, flame-retardant and cross-linked polyolefin insulated cable.

In order to solve the above technical problems, the present invention is achieved by the following technical means.

A long-life safe environment-friendly halogen-free low-smoke flame-retardant cross-linked polyolefin insulated cable comprises a cable body and a cable assembly arranged at the end part of the cable body; the cable body comprises a cable inner core and a cable outer skin layer coated outside the cable inner core; the cable outer skin layer comprises a framework and a silicon rubber insulating layer coated on the framework; the cable assembly comprises a pipe body, and a pipe cavity for the cable body to penetrate through is formed in the pipe body; the one end opening part of lumen is equipped with the ring channel along the body axial, has evenly laid 4 blades along body circumference in the ring channel, and 4 blades all set up and are used for cutting the cortex of cable body along the body axial, and the ring channel lies in evenly to be equipped with 4 outer guide ways of communicating pipe along body circumference on the diapire of the inside department of lumen, and the guide way is used for exporting the body with the cortex of the cable body between adjacent blade.

Through the structure of the invention, the strength of the cable outer skin layer is increased through the framework, so that the cable outer skin layer can better protect the cable inner core; simultaneously, cutting the cable sheath layer that stretches into the lumen through the blade, simultaneously, can derive the body with the cable sheath layer of cutting, be convenient for better when installation cable joint cuts the cable sheath layer.

As preferred, the skeleton includes a plurality of anticollision subassemblies that can splice the setting, and anticollision subassembly includes the collar that the interval set up, and the interval is equipped with a plurality of anti-pulling-on pieces between the collar, and a plurality of anti-pulling-on pieces symmetry between the anticollision subassembly of interval just set up along cable inner core spiral.

According to the invention, through the arrangement of the anti-pulling piece, the cable outer skin layer can buffer the stress of the cable body along the axial direction of the cable body, so that the cable body has better impact resistance and explosion resistance.

Preferably, the mounting ring comprises a front mounting ring and a rear mounting ring, the front mounting ring comprises a first front half ring and a second front half ring which can be spliced, the rear mounting ring comprises a first rear half ring and a second rear half ring which can be spliced, the anti-pulling piece is uniformly arranged between the first front half ring and the first rear half ring, and the anti-pulling piece is uniformly arranged between the second front half ring and the second rear half ring.

Through the structure of the anti-collision assembly, the first front half ring and the first rear half ring are connected through the corresponding tensile sheets to form a half of mounting ring, the second front half ring and the second rear half ring are connected through the tensile sheets to form the other half of mounting ring, and the half of mounting ring and the other half of mounting ring are spliced to form the anti-collision assembly.

Preferably, both ends of the first front half ring and the first rear half ring are provided with first clamping grooves, and both ends of the second front half ring and the second rear half ring are provided with first buckles extending into the corresponding first clamping grooves, so that the assembly of the anti-collision assembly outside the cable inner core is preferably realized.

Preferably, the rear mounting ring is provided with second clamping grooves at intervals, the front mounting ring is provided with second buckles clamped into the corresponding second clamping grooves, and assembly among the anti-collision assemblies is preferably achieved.

Preferably, the body overcoat is equipped with and is used for installing the body in the body installed part on the cable, and the body installed part includes along the gliding sliding sleeve of body, and the corresponding sheath layer that stretches out the cable body of body is equipped with the crust fixed slot in the sliding sleeve.

In the invention, the sliding sleeve extrudes and tightly stretches the cable sheath layer extending out of the tube body, so that the tube body can be installed on the cable body, and the cable assembly is convenient to use.

Preferably, the outer wall of the pipe body is provided with a first sliding chute along the axial direction of the pipe body, and the sliding sleeve is provided with a first sliding block which extends into the corresponding first sliding chute to slide; the pipe body installation part further comprises a driving ring which is sleeved outside the pipe body in a threaded mode and used for pushing the sliding sleeve to move.

Through the structure in the invention, the sliding sleeve can be better pushed to move by screwing the driving ring, and the operation is simple and convenient.

Preferably, a blade accommodating groove is formed in the side wall of the annular groove along the axial direction of the pipe body, and a storage mechanism for driving the blade to be stored in the blade accommodating groove is arranged in the blade accommodating groove; the blade is accomodate and is equipped with second spout and third spout along the body axial on the relative lateral wall in groove, receiving mechanism including be used for installing the first installation piece of blade and with first installation piece complex second installation piece, the tip department of first installation piece is equipped with the rotation post that stretches into in corresponding second spout, be equipped with the second slider that is located the third spout on the lateral wall that is equipped with on the second installation piece, be equipped with between first installation piece and the second installation piece and be used for driving first installation piece to change over to the extension spring that the blade was accomodate the inslot to the blade, be equipped with on the second installation piece and be used for driving first installation piece to rotate the actuating mechanism who drives the blade and be located the ring channel.

Through the structure in the invention, the driving mechanism can drive the blade to be accommodated in the blade accommodating groove, so that the blade is prevented from damaging the inner core of the cable when the cable body is used.

Preferably, the second mounting block is provided with a mounting groove and a sliding groove communicated with the mounting groove along the axial direction of the pipe body; actuating mechanism locates the rack bar in the sliding tray including the rotatable gear of locating in the mounting groove and slidable, intermeshing between gear and rack bar, be equipped with on the gear and accomodate the pole that supports in the mounting groove, be equipped with the fourth spout on the relative lateral wall of sliding tray relatively, be equipped with on the lateral wall of rack bar and be located to correspond gliding third slider in the fourth spout, be equipped with the spring mounting pole that stretches into in the rack bar in the sliding tray, be equipped with on the spring mounting pole and be used for promoting rack bar removal drive to rotate the pole and drive first installation piece pivoted spring, the opening part of ring channel is equipped with the thread groove that supplies the rack bar to stretch into, thread groove female connection is used for driving the first collar in the rack bar withdrawal sliding tray.

Through the structure of the invention, the abutting rod can be better driven to rotate by screwing the first mounting ring, and the first mounting block can be better rotated into the blade receiving groove by matching with the tension spring, so that the blade can be better received.

Preferably, the first mounting block is provided with a positioning groove for the support rod to extend into, and the bottom wall of the positioning groove is provided with an arc-shaped surface matched with the end part of the support rod.

Through the structure in the invention, when the abutting rod extends into the positioning groove, the abutting rod can be in a vertical state, so that the stress of the blade is facilitated, and meanwhile, the abutting rod is positioned, and the abutting rod is prevented from being separated from being matched with the first mounting block.

Drawings

FIG. 1 is a schematic view of a cable assembly of example 1;

FIG. 2 is a schematic cross-sectional view of the cable assembly of example 1;

fig. 3 is a schematic view of a pipe body in embodiment 1;

FIG. 4 is a half-sectional view of a pipe body in example 1;

FIG. 5 is a schematic view of a sliding sleeve in embodiment 1;

fig. 6 is an enlarged schematic view of a portion a in fig. 2;

fig. 7 is a schematic view of a first mounting block in embodiment 1;

fig. 8 is a schematic view of a second mounting block in embodiment 1;

fig. 9 is a partial schematic view of the engagement of the rack bar and the gear in embodiment 1;

fig. 10 is a schematic view of a first mount ring in embodiment 1;

fig. 11 is a schematic cross-sectional view of the cable body in example 1;

fig. 12 is a schematic view of the carcass of example 1 wrapped around a cable core;

fig. 13 is a schematic view of the bumper assembly of embodiment 1;

fig. 14 is a left half schematic view of the bumper assembly of embodiment 1;

fig. 15 is a right half schematic view of the bumper assembly of embodiment 1;

fig. 16 is a left half schematic view from a front side perspective of the bumper assembly of embodiment 1.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

Example 1

The embodiment provides a cable, which comprises a cable body and a cable assembly arranged at the end part of the cable body, wherein the cable assembly is arranged at the end part of the cable body, so that the connection between the cable body and a current collector of a railway locomotive vehicle is preferably realized.

As shown in fig. 11 and 12, the cable body in this embodiment includes an inner cable core 1110, and an outer cable sheath 1120 is coated outside the inner cable core 1110; the cable outer skin layer 1120 comprises a framework 1121 and a silicon rubber insulating layer 1122 coated on the framework 1121; the framework 1121 comprises a plurality of spliced anti-collision assemblies 1210, each anti-collision assembly 1210 comprises a plurality of spaced mounting rings 1211, a plurality of tensile sheets 1222 are spaced between the mounting rings 1211, and the tensile sheets 1222 spaced between the anti-collision assemblies 1210 are symmetrically arranged along the cable core 1110 in a spiral manner.

In this embodiment, the framework 1121 is formed by splicing the plurality of anti-collision assemblies 1210, the framework 1121 is coated outside the cable inner core 1110, and the silica gel insulating layer 1122 is formed by coating the framework 1121 with hot-melt silicone rubber through coating treatment, so that the framework 1121 and the silica gel insulating layer 1122 form the cable outer skin layer 1120 coated outside the cable inner core 1110, and the strength of the cable outer skin layer 1120 can be increased through the framework 1121, so that the cable outer skin layer 1120 can better protect the cable inner core 1110; in this embodiment, the installation rings 1211 and the tensile sheets 1222 are arranged, so that the anti-pulling sheets 1222 are connected to the corresponding installation rings 1211 to form the anti-collision assembly 1210, when the anti-collision assembly 1210 is wrapped outside the cable core 1110, the tensile sheets 1222 can buffer the radial stress along the cable body, so that the cable outer skin layer 1120 has better impact resistance and explosion resistance, and thus the cable body has better impact resistance and explosion resistance.

In this embodiment, the mounting ring 1211 and the tensile piece 1212 are made of rubber, so that the frame 1121 has better elasticity, and the frame 1121 can buffer the stress of the cable body along the radial direction of the cable body, so that the cable body has better impact resistance and explosion resistance.

Referring to fig. 13, in this embodiment, the mounting ring 1211 includes a front mounting ring 1310 and a rear mounting ring 1320, the front mounting ring 1310 includes a first front half ring 1310a and a second front half ring 1310b that are connected together, the rear mounting ring 1320 includes a first rear half ring 1320a and a second rear half ring 1320b that are connected together, the anti-pull tabs 1222 are uniformly disposed between the first front half ring 1310a and the first rear half ring 1320a, and the anti-pull tabs 1222 are uniformly disposed between the second front half ring 1310b and the second rear half ring 1320 b.

By the configuration of the present embodiment, the first front half ring 1310a and the first rear half ring 1320a are connected by the corresponding tension tab 1222 to form a half installation ring, the second front half ring 1310b and the second rear half ring 1320b are connected by the tension tab 1222 to form another half installation ring, and the half installation ring and the other half installation ring form the crash module 1210 by splicing, which preferably facilitates the assembly of the crash module 1210 on the cable core 1110 by splicing.

Referring to fig. 14 to 16, in the present embodiment, both ends of the first front half ring 1310a and the first rear half ring 1320a are provided with first locking grooves 1411, and both ends of the second front half ring 1310b and the second rear half ring 1320b are provided with first locking hooks 1511 extending into the corresponding first locking grooves 1411.

Through the structure in the embodiment, the first buckle 1511 is matched with the first clamping groove 1411, so that the assembly between one half of the mounting ring and the other half of the mounting ring is preferably realized.

In this embodiment, the rear mounting ring 1320 has second slots 1412 spaced apart from each other, and the front mounting ring 1310 has second fasteners 1611 inserted into the corresponding second slots 1412.

Through the structure in this embodiment, the second fasteners 1611 are fastened into the corresponding second fastening slots 1412, so as to preferably achieve the assembly between the adjacent anti-collision assemblies 1210. In this embodiment, when the adjacent mounting rings 1211 are spliced together, a T-shaped slot is formed between the corresponding first slots 1411, and a T-shaped block matched with the slot is formed between the first buckles 1511, so that when the adjacent mounting rings 1211 are spliced together, the first front half ring 1310a and the second front half ring 1310b can be spliced together and fixed, and the mounting rings 1211 can be formed by splicing together more firmly.

In this embodiment, mounting ring 1211 is provided with a retaining ratchet 1330 that mates with cable core 1120.

In this embodiment, by setting the fixing ratchet 1330, when the installation ring 1211 is clamped and fixed outside the cable core 1110, the fixing ratchet 1330 presses the outer skin layer of the cable core 1110 to fix the position of the installation ring 1211, preferably to fix the anti-collision assembly 1210 outside the cable core 1110; in this embodiment, because the material of anti-pulling piece 1212 is rubber, when making the concatenation of anticollision subassembly 1210 install outside cable inner core 1110, through making spaced collar 1211 rotate certain angle, make tensile piece 1212 along cable inner core 1110 axial spiral certain angle, and then make the cable cortex 1120 that the cladding formed possess certain torsion prestressing force, thereby make cable cortex 1120 possess the pull resistance along the cable body axial better and radially possess the antitorque nature along the cable body, make cable cortex 1120 better to the barrier propterty of cable inner core 1110.

In this embodiment, the cable core 1110 includes a plurality of wire cores 1112 and an insulating layer 1111 covering the wire cores 1112, and in this embodiment, the insulating layer 1111 is made of a cross-linked polyolefin material, so that the cable core 1110 has better properties of cold resistance, temperature resistance, crack resistance, and the like, and the service life of the cable body is effectively prolonged.

As shown in fig. 1 to 5, the cable assembly provided in this embodiment includes a tube 100, and a tube cavity 201 for a cable body to pass through is disposed in the tube 100; an opening at one end of the tube cavity 201 is provided with an annular groove 202 along the axial direction of the tube body 100, 4 blades 200 are uniformly distributed in the annular groove 202 along the circumferential direction of the tube body 100, the 4 blades 200 are all arranged along the axial direction of the tube body 100 and are used for cutting an outer skin layer of a cable body, 4 guide grooves 301 communicated with the outer side of the tube body 100 are uniformly arranged on the bottom wall of the annular groove 202 at the inner part of the tube cavity 201 along the circumferential direction of the tube body 100, and the guide grooves 301 are used for guiding the outer skin layer of the cable body between the adjacent blades 200 out of the tube body 100; a tube mounting member 110 for mounting the tube 100 on a cable is provided outside the tube 100, the tube mounting member 110 includes a sliding sleeve 210 sliding along the tube 100, and a sheath fixing groove 511 is provided inside the sliding sleeve 210 corresponding to a sheath layer of a cable body extending out of the tube 100.

In practical use of this embodiment, one end of the cable body extends into the lumen 201 from the opening of the annular groove 202, and the 4 blades 200 located in the annular groove 202 are used to cut the cable sheath extending into the lumen 201, so that the cable sheath 1120 is cut along the axial direction thereof in the process that the cable body extends into the lumen 201, and is uniformly divided into 4 parts; through the arrangement of the guide grooves 301, the uniformly divided cable outer skin layers 1120 can be guided out of the tube body 100 through the corresponding guide grooves 301 along with the cable extending into the tube cavity 201, and the cable inner core 1110 continuously moves from the tube cavity 201 to the other end; when the sliding sleeve 210 slides to one end of the tube cavity 201 along the tube body 100, the sheath fixing groove 511 can extrude and tighten the cable sheath layer 1120 corresponding to the outside of the tube body 100, so that the tube body 100 is fixed, and the installation of the cable assembly at the end of the cable body is preferably realized; the pipe body arranged at the end part of the cable body can better protect the end part of the cable body, effectively reduces the exposure of an inner core of the cable, and prolongs the service life of the cable. In this embodiment, the cutting depth of the blade 200 in the annular groove 202 is adapted to the thickness of the cable sheath 1120, which can preferably cut the cable sheath 1120 to avoid damaging the cable core 1110, and meanwhile, the end portions of the 4 guide grooves 301 and the corresponding blade 200 are located on the same axis, which preferably ensures that the cable sheath 1120 cut by the blade 200 can be guided out by the corresponding guide groove 301.

In this embodiment, a threaded groove 403 is formed at an opening at the other end of the lumen 201, a sealing cover 130 is arranged in the threaded groove 403, and a through hole 131 for extending the cable inner core 1110 is formed in the sealing cover 130.

In the embodiment, through the arrangement of the thread groove 403 and the sealing cover 130, the sealing cover 130 can be screwed at the thread groove 403, so that the sealing cover can close the opening at the other end of the tube cavity 201; wherein, through the setting of through-hole 131 for the insulating layer 1111 of stretching to the cable inner core 1110 of lumen 201 other end department makes sinle silk 1112 can stretch out by corresponding through-hole 131 after the processing of skinning, and the sinle silk 1112 of being convenient for assembles the cable joint, thereby is convenient for the connection installation of cable body on the vehicle current collector.

In this embodiment, a first sliding groove 302 is formed on the outer wall of the tube 100 along the axial direction thereof, and a first sliding block 512 extending into the corresponding first sliding groove 302 to slide is formed on the sliding sleeve 210; the tubular body mount 110 further includes a drive ring 220 that is threaded onto the tubular body 100 and is configured to urge the sliding sleeve 210 to move.

In this embodiment, the outer wall of the tube 100 is provided with a thread engaged with the driving ring 220, so that the driving ring 220 can be rotated to move along the tube 100, and thus when in use, the driving ring 220 can be rotated to drive the sliding sleeve 210 to move, and preferably, the cable sheath 1120 can be extruded and tensioned; wherein, through the setting of first spout 302 and first slider 512 for first slider 512 is located and slides in first spout 302, makes sliding sleeve 210 obtain spacingly, avoids its dislocation when extrudeing tight cable skin layer 1120.

Referring to fig. 6 to 9, in the present embodiment, a blade receiving groove 203 is formed on a side wall of the annular groove 202 along the axial direction of the tube 100, and a receiving mechanism for driving the blade 200 to be received in the blade receiving groove 203 is provided in the blade receiving groove 203; the blade is received and is equipped with second spout 401 and third spout 402 on the relative lateral wall of groove 203 along body 100 axial, receiving mechanism is including the first installation piece 610 that is used for installing blade 200 and with first installation piece 610 complex second installation piece 620, the tip department of first installation piece 610 is equipped with the rotation post 701 that stretches into in corresponding second spout 401, be equipped with the second slider 801 that is located third spout 402 on the lateral wall that is equipped with on the second installation piece 620, be equipped with between first installation piece 610 and the second installation piece 620 and be used for driving first installation piece 610 to change over into the extension spring 650 in the blade is received and is adorned the groove 203, be equipped with on the second installation piece 620 and be used for driving first installation piece 610 to rotate and drive blade 200 and be located the actuating mechanism in annular groove 202.

In this embodiment, the blade storage groove 203 and the blade storage mechanism are arranged, so that the blade storage mechanism can drive the blade 200 to be stored in the blade storage groove 203, thereby preventing the blade 200 from damaging the cable inner core 1110 when the cable body is used; through the arrangement of the second sliding groove 401, the rotating column 701 can slide into the second sliding groove 401, so that the rotating installation of the first installation block 610 is preferably realized; through the arrangement of the third sliding groove 402, the second sliding block 801 slides into the third sliding groove 402, and the installation of the second installation block 620 in the blade receiving groove 203 is preferably realized; wherein, through extension spring 650 and actuating mechanism's setting for extension spring 650 can stimulate first installation piece 610 and revolute the rotation post 701 and rotate, makes blade 200 on the first installation piece 610 to rotate and accomodate in blade accomodates the groove 203, avoids its damage cable inner core 1110, can drive first rotation piece 610 through actuating mechanism and rotate out blade and accomodate groove 203, realizes in blade 200 extends ring channel 202, makes blade 200 can cut the cable cortex 1120 that stretches into in lumen 201.

In this embodiment, the second mounting block 620 is provided with a mounting groove 802 and a sliding groove 803 communicated with the mounting groove 802 along the axial direction of the pipe body 100; actuating mechanism locates the rack bar 640 in the sliding tray 803 including the rotatable gear 630 of locating in the mounting groove 802 and slidable, intermeshing between gear 630 and rack bar 630, be equipped with on the gear 630 and accomodate the support pole 911 in the mounting groove 802, be equipped with the fourth spout 804 on the relative lateral wall of sliding tray 803 relatively, be equipped with on the lateral wall of rack bar 640 and be located the gliding third slider 921 in the corresponding fourth spout 804, be equipped with the spring mounting pole 810 that stretches into in the rack bar 640 in the sliding tray 803, be equipped with on the spring mounting pole 810 and be used for promoting rack bar 640 to remove the drive and support pole 911 and rotate and drive the pivoted spring 811 of first installation piece 610, the opening part of ring channel 202 is equipped with the thread groove 303 that supplies rack bar 630 to stretch into, thread groove 303 internal thread connection is used for driving the first collar 120 in the sliding tray 803 of rack bar 630 withdrawal.

In this embodiment, through the arrangement of the fourth sliding chute 804, the third slider 921 slides into the corresponding fourth sliding chute 804, so that the rack bar 640 is slidably mounted in the sliding chute 803; the spring mounting rod 810 and the spring 811 are arranged, so that the spring 811 can push the rack bar 640 to extend out along the sliding groove 803, and due to the meshed arrangement of the gear 630 and the rack bar 640, in the process that the spring 811 pushes the rack bar 640 to extend out of the sliding groove 803, the rack bar 640 can drive the gear 630 to rotate, further drive the abutting rod 911 on the gear 630 to rotate, so that the abutting rod 911 pushes the first mounting block 610 to rotate out of the blade accommodating groove 203, and the blade 200 can extend into the annular groove 202; through the arrangement of the thread groove 303 and the first mounting ring 120, the first mounting ring 120 is screwed into the thread groove 303, and can push the rack rod extending out of the sliding groove 803 to retract into the sliding groove 803, so as to drive the gear 630 to rotate and drive the abutting rod 911 to rotate into the mounting groove 802, and the first mounting block 610 can be preferably rotated into the blade accommodating groove 203 by matching with the tension spring 650, so as to realize the accommodation of the blade 200; in this embodiment, hinge holes are oppositely formed on the opposite side walls of the mounting groove 802, hinge shafts are arranged on the gears 630 corresponding to the hinge holes, and the gears 630 are rotatably mounted in the mounting groove 802 preferably by the cooperation of the hinge shafts and the hinge holes; in this embodiment, a first pull rod 805 is disposed in the mounting groove 802 and near an opening of one end of the lumen 201, a second pull rod 702 is disposed on the first mounting block 610, and the tension spring 650 is preferably mounted through the first pull rod 805 and the second pull rod 702.

In this embodiment, the first mounting block 610 is provided with a positioning groove 703 for the rod 911 to extend into, and the bottom wall of the positioning groove 703 is provided with an arc surface 704 matched with the end of the rod 911.

Through the structure in this embodiment, in the rotation process of the gear 630, the end of the supporting rod 911 can preferably slide into or out of the positioning groove 703 along the arc-shaped surface 704, wherein when the supporting rod 703 rotates and slides into the positioning groove 703, the supporting rod 911 is in a vertical state, at this time, the side wall of the positioning groove 703 can position the supporting rod 911, the supporting rod 911 is prevented from being disengaged from the first mounting block 610, the stress of the blade 200 is preferably ensured, and the cable sheath 1120 is conveniently cut.

Referring to fig. 10, the first mounting ring 120 is provided with spiral guide blocks 1011 along a spiral direction of the tension preventing pieces 1212, and the cable sheath 1120 at the end of the cable body is provided with guide grooves along an axial direction thereof to be engaged with the corresponding spiral guide blocks 1011.

In the actual production of the cable body in this embodiment, the two end portions of the cable body need to be assembled with the cable assembly, and then the skeletons 1121 are not disposed at the two end portions of the cable outer skin layer 1120, so that the blade 200 can conveniently cut the cable outer skin layer 1120 at the two end portions; in this embodiment, through the setting of spiral guide block 1011 and guide way for the in-process of lumen 201 is being stretched into to the cable body, through the cooperation of spiral guide block 1011 and guide way, makes the whole torsion of cable skin 1120 of tip department, then through the cutting, fixed, thereby when making the cable subassembly install this tip department of cable, the tip department of cable skin 1120 still possesses the torsion prestressing force, makes whole cable skin 1120 can be to carrying out better protection of cable inner core 1110.

In this embodiment, a stepped thread groove 304 is formed at a bottom wall of the thread groove 303 in the lumen 201, and a second mounting ring 601 for fixing the first mounting block 610 and the second mounting block 620 is screwed into the stepped thread groove 304.

By the configuration in the present embodiment, screwing the second mounting ring 601 into the stepped thread groove 304, it is preferable to realize attachment and detachment of the receiving mechanism in the blade receiving groove 203.

In summary, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides a long-life safety ring protects and does not have steamed low fire-retardant crosslinked polyolefin insulated cable of cigarette which characterized in that: the cable assembly comprises a cable body and a cable assembly arranged at the end part of the cable body; the cable body comprises a cable inner core (1110) and a cable outer skin layer (1120) coated outside the cable inner core (1110); the cable outer skin layer (1120) comprises a framework (1121) and a silicon rubber insulating layer (1122) coated on the framework (1121); the cable assembly comprises a pipe body (100), wherein a pipe cavity (201) for the cable body to penetrate through is arranged in the pipe body (100); one end opening part of lumen (201) is equipped with ring channel (202) along body (100) axial, evenly laid 4 blade (200) along body (100) circumference in ring channel (202), 4 blade (200) all set up and are used for cutting the cortex of cable body along body (100) axial, ring channel (202) are located evenly to be equipped with 4 outer guide way (301) of intercommunication body (100) along body (100) circumference on the diapire of lumen (201) inside department, guide way (301) are used for exporting body (100) with the cortex of the cable body between adjacent blade (200).

2. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 1, characterized in that: the framework (1121) comprises a plurality of anti-collision assemblies (1210) which can be spliced, each anti-collision assembly (1210) comprises a mounting ring (1211) which is arranged at intervals, a plurality of anti-pulling pieces (1222) are arranged between the mounting rings (1211) at intervals, and the anti-pulling pieces (1222) between the anti-collision assemblies (1210) are symmetrical and are arranged spirally along the cable inner core (1110).

3. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 2, characterized in that: the mounting ring (1211) comprises a front mounting ring (1310) and a rear mounting ring (1320), the front mounting ring (1310) comprises a first front half ring (1310a) and a second front half ring (1310b) which can be spliced, the rear mounting ring (1320) comprises a first rear half ring (1320a) and a second rear half ring (1320b) which can be spliced, the anti-pulling pieces (1222) are uniformly distributed between the first front half ring (1310a) and the first rear half ring (1320a), and the anti-pulling pieces (1222) are uniformly distributed between the second front half ring (1310b) and the second rear half ring (1320 b).

4. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 3, characterized in that: the two ends of the first front half ring (1310a) and the first rear half ring (1320a) are respectively provided with a first clamping groove (1411), and the two ends of the second front half ring (1310b) and the second rear half ring (1320b) are respectively provided with a first buckle (1511) extending into the corresponding first clamping groove (1411).

5. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 3, characterized in that: second clamping grooves (1412) are formed in the rear mounting ring (1320) at intervals, and second buckles (1611) clamped into the corresponding second clamping grooves (1412) are arranged on the front mounting ring (1310).

6. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 1, characterized in that: body (100) overcoat is equipped with and is used for installing body (100) body installed part (110) on the cable, and body installed part (110) are including following gliding sliding sleeve (210) of body (100), and the corresponding sheath fixed slot (511) that stretches out the cable body of body (100) is equipped with in sliding sleeve (210).

7. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 6, characterized in that: a first sliding groove (302) is formed in the outer wall of the pipe body (100) along the axial direction of the pipe body, and a first sliding block (512) extending into the corresponding first sliding groove (302) to slide is arranged on the sliding sleeve (210); the pipe body mounting part (110) further comprises a driving ring (220) which is sleeved outside the pipe body (100) in a threaded mode and used for pushing the sliding sleeve (210) to move.

8. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 1, characterized in that: a blade accommodating groove (203) is formed in the side wall of the annular groove (202) along the axial direction of the pipe body (100), and an accommodating mechanism for driving the blade (200) to be accommodated in the blade accommodating groove (203) is arranged in the blade accommodating groove (203); the blade is accomodate and is equipped with second spout (401) and third spout (402) along body (100) axial on the relative lateral wall of groove (203), receiving mechanism is including first installation piece (610) that are used for installing blade (200) and with first installation piece (610) complex second installation piece (620), the tip department of first installation piece (610) is equipped with and stretches into rotation post (701) in corresponding second spout (401), be equipped with second slider (801) that are located third spout (402) on the lateral wall that is equipped with on second installation piece (620), be equipped with extension spring (650) that are used for driving first installation piece (610) to change over into blade and accomodate groove (203) between first installation piece (610) and second installation piece (620), be equipped with on second installation piece (620) and be used for driving first installation piece (610) to rotate and take moving blade (200) to be located ring channel (202).

9. The long-life safe environment-friendly halogen-free low-smoke flame-retardant crosslinked polyolefin insulated cable according to claim 8, characterized in that: the second mounting block (620) is provided with a mounting groove (802) and a sliding groove (803) communicated with the mounting groove (802) along the axial direction of the pipe body (100); the driving mechanism comprises a gear (630) which is rotatably arranged in an installation groove (802) and a rack bar (640) which is slidably arranged in a sliding groove (803), the gear (630) and the rack bar (630) are mutually meshed, a supporting rod (911) which can be accommodated in the installation groove (802) is arranged on the gear (630), a fourth sliding groove (804) is oppositely arranged on the opposite side wall of the sliding groove (803), a third sliding block (921) which is positioned in the fourth sliding groove (804) and slides correspondingly is arranged on the side wall of the rack bar (640), a spring installation rod (810) which extends into the rack bar (640) is arranged in the sliding groove (803), a spring (811) which is used for pushing the rack bar (640) to move and driving the supporting rod (911) to rotate and drive a first installation block (610) to rotate is arranged on the spring installation rod (810), a threaded groove (303) which the rack bar (630) extends into is arranged at an opening of the annular groove (202), the screw groove (303) is internally threaded with a first mounting ring (120) for driving the rack bar (630) to retract into the sliding groove (803).

10. The long-life safe environment-friendly low-smoke halogen-free flame-retardant crosslinked polyolefin insulated cable according to claim 9, characterized in that: the first mounting block (610) is provided with a positioning groove (703) for the abutting rod (911) to extend into, and the bottom wall of the positioning groove (703) is provided with an arc-shaped surface (704) matched with the end part of the abutting rod (911).