CN111740377A - Composite cable connecting assembly, strain fitting and mounting method - Google Patents

Composite cable connecting assembly, strain fitting and mounting method Download PDF

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Publication number
CN111740377A
CN111740377A CN202010699416.2A CN202010699416A CN111740377A CN 111740377 A CN111740377 A CN 111740377A CN 202010699416 A CN202010699416 A CN 202010699416A CN 111740377 A CN111740377 A CN 111740377A
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CN
China
Prior art keywords
composite
taper
core rod
strain
composite cable
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CN202010699416.2A
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Chinese (zh)
Inventor
王梦君
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Xiamen Hongji Weiye Industrial Co ltd
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Xiamen Hongji Weiye Industrial Co ltd
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Priority to CN202010699416.2A priority Critical patent/CN111740377A/en
Publication of CN111740377A publication Critical patent/CN111740377A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
    • H02G1/145—Moulds
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/05—Suspension arrangements or devices for electric cables or lines

Abstract

The invention discloses a composite cable connecting assembly, a strain-resistant hardware fitting and an installation method, belonging to the technical field of composite material products, the composite cable connecting assembly comprises a composite cable core, wherein the composite cable core comprises a composite core rod and an aluminum stranded wire for coating the composite core rod, one part of the composite core rod is exposed out of the aluminum stranded wire, and the composite cable connecting assembly also comprises: and the accessory is fixed on the composite core rod by fastening and matching with the outer conical surface of the tapered part. The composite cable connecting component, the strain-resistant hardware fitting and the mounting method have the advantages of better fatigue resistance, high connection stability, light overall weight and convenience in construction.

Description

Composite cable connecting assembly, strain fitting and mounting method
Technical Field
The invention belongs to the technical field of composite material products, and particularly relates to a composite cable connecting assembly, a strain-resistant hardware fitting and an installation method.
Background
The composite material is a material formed by combining two or more different substances in different modes, can exert the advantages of various materials, overcomes the defect of a single material, and expands the application range of the material. The composite material has the advantages of light weight, high strength, convenient processing and forming and excellent elasticity. The carbon fiber composite material has the advantages of light weight, low sag, chemical corrosion resistance, long service life, no magnetism, high temperature resistance, strong overload capacity and the like. The composite material is an anisotropic material, the longitudinal elastic modulus and the strength of the composite material are far greater than the transverse elastic modulus and the strength of the composite material, the composite material does not have any problem under the condition of only axial force, but the composite material needs to bear composite forces of bending, shearing, bias pulling and the like in the anchorage device, so that the composite material is locally damaged and fails early, and the anchorage is very difficult. Therefore, the performance of the composite material is fully exerted, the problems of the anchoring technology of a composite material system and the like are solved and optimized, the engineering application bottleneck of the composite material system is broken through, and the problem which needs to be solved at present is solved.
At present, composite anchoring materials are mainly gradient materials based on ceramics and epoxy resins. The anchorage mechanism mainly comprises: the bonding type anchorage device comprises a sleeve, a bonding medium and the like, the method adopts a centralized anchoring mode, all ribs are mutually influenced, and the design of the large-tonnage anchorage device cannot be precisely guided; when the clamp piece type anchorage is used for anchoring a plurality of carbon fiber ribs, other anchoring forms need to be combined, and further research is needed; the internal expansion extrusion type anchorage device is suitable for anchoring a single stranded wire; the mechanical extrusion type anchorage device and the composite material base material have the problem of rigidity mutation, so that the mechanical extrusion type anchorage device is very easy to bite the composite material product with weak transverse strength, and the anchoring efficiency is reduced.
Currently, the connection between the composite material and the accessory includes mechanical connection, adhesive bonding, and a mixture of mechanical connection and adhesive bonding. For the parts with low strength requirements, the connection is realized by a glue joint method; at the force bearing part of the structure, the connection part can bear enough shearing force and stripping force by a mixed mode of mechanical connection and adhesive connection. However, the performance of the glue joint is greatly affected by the environment and the glue joint has poor resistance to peeling. And for the existing composite material product with large span, the anchoring strength which the accessory can bear is inconvenient to test.
Electric power fittings are subjected to severe tests of ice, snow and storm on long-term running transmission lines, and faults such as wire deicing jump, interphase short circuit, wire collision with a lightning conductor and the like are easily caused by strong wind, freezing rain and ice coating, so that the electric power fittings have high mechanical strength and sufficient safety factor. The existing cable connecting assembly is poor in fatigue resistance, insufficient in connection stability, large in whole weight of the strain-resistant hardware fitting, and very inconvenient to construct when used in a large-span cable.
Disclosure of Invention
The invention aims to provide a composite cable connecting assembly, a strain-resistant hardware fitting and an installation method, which have the advantages of better fatigue resistance, high connection stability, light overall weight and convenience in construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a composite cable connection assembly, which comprises a composite cable core, wherein the composite cable core comprises a composite core rod and an aluminum stranded wire wrapping the composite core rod, one part of the composite core rod is exposed out of the aluminum stranded wire, and the composite cable connection assembly also comprises: and the accessory is fixed on the composite core rod by fastening and matching with the outer conical surface of the tapered part.
Preferably, the tapered portion comprises at least one first tapered section, and the attachment comprises at least one connecting piece, and the connecting piece is fixed on the composite core rod through fastening fit with the outer tapered surface of the first tapered section.
Preferably, the tapered portion further comprises at least one second tapered section, the taper of the first tapered section is opposite to that of the second tapered section, a gap exists between the first tapered section and the second tapered section, and the accessory further comprises at least one auxiliary piece, and the auxiliary piece is fixed on the composite core rod through fastening fit with the outer tapered surface of the second tapered section.
Preferably, the first taper section and the second taper section each comprise a first taper portion, a second taper portion, and an extension portion, the first taper portion and the extension portion are connected through the second taper portion, and the tapers of the first taper portion and the second taper portion are opposite.
Preferably, the angle between the inclined surface of the first cone part and the centre line thereof is 0.1-15 °.
Preferably, the connecting piece is provided with a first tapered hole matched with the first taper part of the first tapered section, the taper of the first tapered hole is the same as that of the first taper part of the first tapered section, the auxiliary piece is provided with a second tapered hole matched with the first taper part of the second tapered section, and the taper of the second tapered hole is the same as that of the first taper part of the second tapered section.
Preferably, the connecting piece is made of a metal material, and the composite core rod is made of a carbon fiber composite material or a glass fiber composite material.
The invention also provides a tension-resistant hardware fitting which comprises a tension-resistant pipe, a steel anchor, an inner lining pipe and the composite cable connecting assembly, wherein the inner lining pipe is fixedly sleeved outside the aluminum stranded wire, one end of the inner lining pipe is abutted against one end of an accessory or one end of the steel anchor, the accessory is partially or completely positioned inside the steel anchor and is partially or completely in threaded connection with the steel anchor, the tension-resistant pipe is fixedly sleeved outside the inner lining pipe and the steel anchor, one part of the inner lining pipe is exposed outside the tension-resistant pipe, and one part of the steel anchor is exposed outside the tension-resistant pipe.
Preferably, the accessory comprises a connecting piece and an auxiliary piece, the connecting piece is completely located inside the steel anchor, one end of the auxiliary piece is provided with a limiting table, one end of the limiting table abuts against one end, located in the strain pipe, of the lining pipe, and the other end of the limiting table abuts against one end, located in the strain pipe, of the steel anchor.
Preferably, the outer wall of the aluminum stranded wire and the outer surface of the lining pipe are coated with the conductive layer.
The invention also provides an installation method of the tension-resistant hardware fitting, wherein the tension-resistant hardware fitting is in any structure, and the installation method comprises the following steps: s1: stripping the aluminum stranded wires of the composite cable core to expose the composite core rod, and S2: taking the inner lining pipe to penetrate and sleeve on the composite cable core from the end of the stripped composite core rod, S3: taking the strain pipe to penetrate from the end of the stripped composite core rod, S4: sleeving the accessory on the composite mandrel, S5: covering yarns on the composite core rod, and curing and forming a taper part on the composite core rod outside the accessory, S6: tightening the attachment toward the taper portion so that the attachment is fixed to the taper portion, S7: tightening the steel anchor so that the attachment is partially or fully located within the steel anchor, S7: pushing the strain insulator tube to lean against the steel anchor, S8: and (4) penetrating the lining pipe into the tension pipe and tightly pushing the tension pipe, S9: and (3) adopting a crimping tool to crimp the surface of the strain tube according to the marked crimping area, so that the strain tube can hold the steel anchor and the composite cable core tightly.
The invention has the beneficial effects that:
1. the taper part is formed by integrally covering and solidifying the same material with the composite core rod, and the expansion coefficient of the same material is the same, so that the anchoring point of the composite core rod has better fatigue resistance.
2. The accessory is fastened on the composite material base material through the taper part, an elastic sandwich in the prior art is omitted, the composite core rod and the taper part are made of composite materials, the weight is lighter, the strength is higher, the overall weight can be reduced, and construction is convenient.
3. The problem of rigidity mutation of the composite core rod and the accessories is solved, stress concentration caused by extrusion of the accessories on the composite core rod is dispersed, and the composite core rod with weaker transverse strength is prevented from being clamped, so that the high strength of the composite material can be fully exerted, and the anchoring efficiency is high; and the self-anchoring performance of the connecting piece is realized through the synergistic effect of the taper part and the accessory when the composite core rod is subjected to the tensile force, the connection stability is high, glue application or other structures are not needed, the strength is high, the cost is low, and the product is lighter.
4. The auxiliary member that adds solves the inconvenient problem of current large span composite cable coupling assembling anchor and strength test, avoids the damage that directly acts on composite core rod to cause simultaneously, improves composite core rod intensity and the stability of being connected with the connecting piece.
5. The taper part can solve the problem that the connecting piece is pulled out when the composite cable connecting assembly is tested.
6. The material performance of the composite material is fully exerted, the problems of difficult anchoring, poor stability, short service life and the like of the anchoring technology of a composite material system are solved, and the anchoring efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of a conventional strain-resistant hardware.
Fig. 2 is a schematic structural diagram of a composite cable connection assembly according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a first taper section according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a connecting member according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a strain-resistant hardware according to an embodiment of the invention.
Fig. 6 is a schematic structural diagram of a second composite cable connection assembly according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a second auxiliary member according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a second strain-resistant hardware according to an embodiment of the invention.
Fig. 9 is a schematic installation diagram of the strain-resistant hardware according to the second embodiment of the present invention (at an installation stage of the composite cable connection assembly).
Fig. 10 is a schematic view of mounting the strain-resistant hardware according to the second embodiment of the present invention (at a subsequent mounting stage).
Fig. 11 is a schematic structural diagram of a three-strain-resistant hardware according to an embodiment of the present invention.
Fig. 12 is a schematic structural diagram of a four-strain-resistant hardware according to an embodiment of the present invention.
The labels in the figures are: the composite cable comprises a 1-composite cable core, 11-composite core rods, 12-aluminum stranded wires, 2-taper portions, 21-first taper sections, 22-second taper sections, 201-first taper portions, 202-second taper portions, 203-extending portions, 31-connecting pieces, 32-auxiliary pieces, 320-limiting tables, 4-first taper holes, 5-second taper holes, 6-strain pipes, 7-steel anchors and 8-inner lining pipes.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Those not described in detail in this specification are within the skill of the art. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The existing strain-resistant hardware needs to be sleeved on a core rod by an elastic sandwich, and then an inner taper sleeve is sleeved on the elastic sandwich, as shown in fig. 1.
The first embodiment is as follows:
as shown in fig. 2 to fig. 4, the composite cable connection assembly (single-end single taper) provided in this embodiment includes a composite cable core 1, where the composite cable core 1 includes a composite core rod 11 and aluminum stranded wires 12 wrapping the composite core rod 11, and a left end of the composite core rod 11 is exposed outside the aluminum stranded wires 12, and further includes: and the taper part 2 is fixed on the composite core rod 11 exposed out of the aluminum stranded wire 12, and the taper part 2 is formed by integrally covering yarns with the same material as the composite core rod 11 and solidifying the yarns and is made of carbon fiber composite materials. The coefficient of expansion with the material is the same, make composite core rod 11's anchor point have better fatigue resistance, the tapering portion 2 of this embodiment is a first tapering section 21, the annex is a connecting piece 31, connecting piece 31 is made by metal material, the lateral wall of connecting piece 31 has the external screw thread with 7 screw-thread fit of steel anchor, connecting piece 31 is fixed in composite core rod 11 through the outer conical surface fastening cooperation with first tapering section 21, save the elasticity sandwich among the prior art, and composite core rod 11 and tapering portion 2 all adopt combined material, especially carbon fiber composite, light in weight, the intensity is higher, reducible whole weight, has construction convenience's advantage. The material performance of the composite material is fully exerted, the problems of difficult anchoring, poor stability, short service life and the like of the anchoring technology of the carbon composite material system are solved, and the anchoring efficiency is high. The composite material is used for a large-span overhead line product, can meet the requirements of electric power and communication transmission, is high in strength, does not have the problems of magnetic loss and thermal effect caused by steel strand materials, and greatly reduces the electric energy loss of electric energy in transmission.
Further, the first taper section 21 includes a first taper portion 201, a second taper portion 202, and an extension portion 203, the first taper portion 201 and the extension portion 203 are connected by the second taper portion 202, and the tapers of the first taper portion 201 and the second taper portion 202 are opposite. The second cone 202 and the extension 203 make the transition between the covering yarn structure and the composite core rod 11 stable, avoid stress concentration, and the stress of the composite core rod 11 is dispersed along the axial direction, thereby improving the anchoring stability.
Further, the angle between the inclined surface of the first tapered portion 201 and the center line thereof is 1 °. The specific angle is selected according to actual production to adapt to different requirements.
Further, a first tapered hole 4 matched with the first taper portion 201 of the first tapered section 21 is formed in the middle of the connecting member 31, the first tapered hole 4 penetrates through the left and right side walls of the connecting member 31, and the taper of the first tapered hole 4 is the same as that of the first taper portion 201 of the first tapered section 21. Complementary matching is formed, the contact surface is inclined, the problem of rigidity mutation of the composite core rod 11 and the connecting piece 31 is solved, stress concentration caused by extrusion of the connecting piece 31 on the composite core rod 11 is dispersed, and the composite material with weaker transverse strength is prevented from being damaged by clamping, so that the high strength of the composite material can be fully exerted, and the anchoring efficiency is high; and when the composite core rod 11 is under tension, the self-anchoring performance is realized through the synergistic effect of the first taper section 21 and the connecting piece 31, glue application or other structures are not needed, the cost is low, the whole product is lighter, and the market competitiveness is improved.
As shown in fig. 5, the present invention further provides a strain-resistant hardware tool, which includes a strain-resistant pipe 6, a steel anchor 7, an inner lining pipe 8, and any one of the composite cable connection assemblies as described above, wherein the inner lining pipe 8 is fixedly sleeved outside the aluminum stranded wire 12, and the left end of the inner lining pipe abuts against the right end of the steel anchor 7, the connection member 31 is completely located inside the steel anchor 7 and is in threaded connection with the steel anchor 7, the strain-resistant pipe 6 is fixedly sleeved outside the inner lining pipe 8 and the steel anchor 7, the right end of the inner lining pipe 8 is exposed outside the strain-resistant pipe 6, and the left end of the steel anchor 7 is exposed outside the strain-resistant pipe 6.
Further, the outer wall of the aluminum stranded wire 12 and the outer surface of the lining pipe 8 are coated with conductive layers, and the conductive layers are antioxidant conductive paste to ensure effective conduction.
This embodiment also provides an installation method of the tension-resistant hardware fitting, where the tension-resistant hardware fitting is the structure described in any one of the above, and the installation method includes the following steps: s1: stripping the aluminum stranded wire 12 at the left end of the composite cable core 1, so that the composite core rod 11 is exposed, and S2: taking the lining pipe 8 from the left end of the composite core rod 11 to penetrate and sleeve on the composite cable core 1, S3: taking the strain insulator tube 6 to penetrate from the left end of the composite core rod 11, wherein the lining tube 8 and the strain insulator tube 6 are both positioned on the right side of the exposed part of the composite core rod 11 at the moment, and S4: sleeving the connecting piece 31 on the composite mandrel 11, and S5: covering the composite mandrel 11 with yarn, and curing and molding the tapered portion 2 on the composite mandrel 11 on the left side of the joint 31, S6: tightening the connecting member 31 toward the tapered portion 2 so that the connecting member 31 is fixed to the tapered portion 2, S7: tightening the steel anchor 7 so that the connecting member 31 is entirely located within the steel anchor 7, S7: pushing the tension-resistant pipe 6 towards the steel anchor 7 to abut to the left, and providing a gasket between the tension-resistant pipe 6 and the steel anchor 7 in the embodiment, that is, the tension-resistant pipe 6 slides to abut to the gasket to the left, and the gasket abuts to the steel anchor 7 at this time, S8: penetrate interior and the top tight of strain insulator tube 6 with interior bushing pipe 8, it offsets with steel anchor 7 right-hand member until interior bushing pipe 8 left end, S9: and (3) adopting a crimping tool to crimp the surface of the tension tube 6 according to the marked crimping area, so that the tension tube 6 can hold the steel anchor 7 and the composite cable core 1 tightly. When the connecting piece 31 is fastened, only simple tensioning action is needed, other steps such as glue application and the like are not needed, and the anchoring process is simple. Adopt taper portion 2 can solve the problem that connecting piece 31 was pulled out when compound cable coupling assembling test. In addition, in the use, under the effect of pulling force, the anchor of connecting piece 31 and first tapering section 21 is more and more firm, and the self-anchoring effect of structure has improved the stability of anchor. The whole weight is lighter, the strength is better, and the market competitiveness is improved.
Example two:
as shown in fig. 6 to 7, the composite cable connection assembly (single-end double taper) provided in this embodiment includes a composite cable core 1, where the composite cable core 1 includes a composite core rod 11 and aluminum stranded wires 12 wrapping the composite core rod 11, and a left end of the composite core rod 11 is exposed outside the aluminum stranded wires 12, and further includes: and the taper part 2 is fixed on the composite core rod 11 exposed out of the aluminum stranded wire 12, and the taper part 2 is formed by integrally covering yarns with the same material as the composite core rod 11 and solidifying the yarns and is made of carbon fiber composite materials. The expansion coefficient of the same material is the same, so that the anchoring point of the composite mandrel 11 has better fatigue resistance, the taper part 2 of the embodiment comprises a first taper section 21 and a second taper section 22, the tapers of the first taper section 21 and the second taper section 22 are opposite, a distance exists between the first taper section 21 and the second taper section 22, the accessories are a connecting piece 31 and an auxiliary piece 32, the connecting piece 31 and the auxiliary piece 32 are both made of metal materials, the outer side wall of the connecting piece 31 is provided with an external thread in threaded fit with the steel anchor 7, the outer wall of the auxiliary piece 32 is a smooth circular surface, the connecting piece 31 is fixed on the composite mandrel 11 through fastening fit with the external conical surface of the first taper section 21, and the auxiliary piece 32 is matched with the second taper section 22. The auxiliary member 32 is used for tensioning and anchoring the auxiliary connecting member 31, and when the auxiliary member is tensioned, the acting force of one end acts on the auxiliary member 32, so that the connecting member 31 is fastened on the first taper section 21, the problem that the existing large-span composite cable connecting assembly is inconvenient to anchor and test strength is solved, meanwhile, the damage to the composite core rod 11 caused by the direct action on the composite core rod 11 is avoided, and the strength of the composite core rod 11 and the connection stability of the connecting member 31 are improved. The elastic sandwich in the prior art is omitted, the composite core rod 11 and the taper part 2 are both made of composite materials, particularly carbon fiber composite materials, the composite core rod is lighter in weight and higher in strength, the overall weight can be reduced, and the composite core rod has the advantage of convenience in construction. The material performance of the composite material is fully exerted, the problems of difficult anchoring, poor stability, short service life and the like of the anchoring technology of the carbon composite material system are solved, and the anchoring efficiency is high.
Further, the first taper section 21 and the second taper section 22 each include a first taper portion 201, a second taper portion 202, and an extension portion 203, the first taper portion 201 and the extension portion 203 are connected by the second taper portion 202, and the tapers of the first taper portion 201 and the second taper portion 202 are opposite. The second cone 202 and the extension 203 make the transition between the covering yarn structure and the composite core rod 11 stable, avoid stress concentration, and the stress of the composite core rod 11 is dispersed along the axial direction, thereby improving the anchoring stability.
Further, the angle between the inclined surface of the first tapered portion 201 and the center line thereof is 1 °. The specific angle is selected according to actual production to adapt to different requirements.
Further, a first tapered hole 4 matched with the first taper portion 201 of the first tapered section 21 is formed in the middle of the connecting member 31, the first tapered hole 4 penetrates through the left and right side walls of the connecting member 31, and the taper of the first tapered hole 4 is the same as that of the first taper portion 201 of the first tapered section 21. Complementary matching is formed, the contact surface is inclined, the problem of rigidity mutation of the composite core rod 11 and the connecting piece 31 is solved, stress concentration caused by extrusion of the connecting piece 31 on the composite core rod 11 is dispersed, and the composite material with weaker transverse strength is prevented from being damaged by clamping, so that the high strength of the composite material can be fully exerted, and the anchoring efficiency is high; and when the composite core rod 11 is under tension, the self-anchoring performance is realized through the synergistic effect of the first taper section 21 and the connecting piece 31, glue application or other structures are not needed, the cost is low, the whole product is lighter, and the market competitiveness is improved. The middle part of the auxiliary part 32 is provided with a second taper hole 5 matched with the first taper part 201 of the second taper section 22, the second taper holes 5 penetrate through the left side wall and the right side wall of the auxiliary part 32, the taper of the second taper holes 5 is the same as that of the first taper part 201 of the second taper section 22, complementary matching is formed, the contact surface is inclined, the problem of rigidity mutation of the composite core rod 11 and the auxiliary part 32 is solved, stress concentration caused by extrusion of the auxiliary part 32 on the composite core rod 11 is dispersed, the composite core rod 11 with weak transverse strength is prevented from being clamped, and therefore the high strength of the composite material can be fully exerted, and the anchoring effect of the auxiliary connecting part 31 is achieved; by covering the composite core rod 11 with yarn at a distance from the first tapered section 21 and solidifying it into the second tapered section 22, in cooperation with the auxiliary member 32 having a complementary taper, the problems of inconvenient anchoring process and strength test that the connecting member 31 (anchoring tip) can withstand due to the composite cable core 1 being too long are effectively solved. The stress distribution of the anchoring system is more reasonable, and the stress of the anchoring area is more uniformly distributed along the axial direction.
As shown in fig. 8, the present invention further provides a strain-resistant hardware tool, which includes a strain-resistant pipe 6, a steel anchor 7, an inner lining pipe 8, and any one of the composite cable connection assemblies as described above, wherein the inner lining pipe 8 is fixedly sleeved outside the aluminum stranded wire 12, and the left end of the inner lining pipe 8 abuts against the right end of the auxiliary member 32, the connection member 31 is completely located inside the steel anchor 7, the right end of the auxiliary member 32 has a limiting table 320, the limiting table 320 is located outside the steel anchor 7, the other portion of the auxiliary member 32 is located inside the steel anchor 7, the right end of the limiting table 320 abuts against the left end of the inner lining pipe 8, the left end of the limiting table 320 abuts against the right end of the steel anchor 7, the connection member 31 is in threaded connection with the steel anchor 7, the strain-resistant pipe 6 is fixedly sleeved outside the inner lining pipe 8 and the steel anchor 7, the right end of the inner lining pipe 8 is exposed outside the strain-.
Further, the outer wall of the aluminum stranded wire 12 and the outer surface of the lining pipe 8 are coated with conductive layers, and the conductive layers are antioxidant conductive paste to ensure effective conduction.
As shown in fig. 9 to 10, the present embodiment further provides a method for installing a strain-resistant hardware, where the strain-resistant hardware is the structure described in any one of the above, including the following steps: s1: stripping the aluminum stranded wire 12 at the left end of the composite cable core 1, so that the composite core rod 11 is exposed, and S2: taking the lining pipe 8 from the left end of the composite core rod 11 to penetrate and sleeve on the composite cable core 1, S3: taking the strain insulator tube 6 to penetrate from the left end of the composite core rod 11, wherein the lining tube 8 and the strain insulator tube 6 are both positioned on the right side of the exposed part of the composite core rod 11 at the moment, and S4: sleeving the connecting piece 31 and the auxiliary piece 32 on the composite mandrel 11, S5: covering yarns on the composite mandrel 11, solidifying and molding a first taper section 21 on the composite mandrel 11 on the left side of the connecting piece 31, grinding the first taper section to a designed size, solidifying and molding a second taper section 22 on the composite mandrel 11 on the right side of the auxiliary piece 32, grinding the second taper section 22 to the designed size, and enclosing the connecting piece 31 and the auxiliary piece 32 through the first taper section 21 and the second taper section 22, S6: simultaneously clamping the connecting member 31 and the auxiliary member 32, and pulling the connecting member 31 and the auxiliary member 32 in opposite directions, respectively, so that the connecting member 31 is pulled toward the first tapered section 21, the connecting member 31 is fixed to the first tapered section 21, the auxiliary member 32 is pulled toward the second tapered section 22, and the auxiliary member 32 is fixed to the second tapered section 22, S7: and (4) screwing the steel anchor 7 until the right end of the steel anchor 7 abuts against the left end of the limiting table 320, wherein the connecting piece 31 is completely positioned in the steel anchor 7, and S7: pushing the tension-resistant pipe 6 towards the steel anchor 7 to abut to the left, and providing a gasket between the tension-resistant pipe 6 and the steel anchor 7 in the embodiment, that is, the tension-resistant pipe 6 slides to abut to the gasket to the left, and the gasket abuts to the steel anchor 7 at this time, S8: penetrate interior and the top tight of strain insulator tube 6 with interior bushing pipe 8, it offsets with steel anchor 7 right-hand member until interior bushing pipe 8 left end, S9: and (3) adopting a crimping tool to crimp the surface of the tension tube 6 according to the marked crimping area, so that the tension tube 6 can hold the steel anchor 7 and the composite cable core 1 tightly. When the connecting piece 31 is fastened, only simple tensioning action is needed, other steps such as glue application and the like are not needed, and the anchoring process is simple. Adopt taper portion 2 can solve the problem that connecting piece 31 was pulled out when compound cable coupling assembling test. Wherein, the problem of current large span composite cable coupling assembling anchor and the inconvenient strength test of design solution through second toper section 22 and auxiliary member 32. In addition, in the use, under the effect of pulling force, the anchor of connecting piece 31 and first tapering section 21 is more and more firm, and the self-anchoring effect of structure has improved the stability of anchor. The whole weight is lighter, the strength is better, and the market competitiveness is improved.
Example three:
as shown in fig. 11, the present embodiment is different from the first embodiment in that: the left end and the right end of the composite core rod 11 are exposed outside the aluminum stranded wire 12 (double-end single taper).
Example four:
as shown in fig. 12, the present embodiment is different from the second embodiment in that: the left end and the right end of the composite core rod 11 are exposed outside the aluminum stranded wire 12 (double-head double-taper).
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (11)

1. The utility model provides a composite cable coupling assembling, includes composite cable core, composite cable core include composite core rod and incite somebody to action the aluminium strands including the cladding of composite core rod, a part of composite core rod expose in outside the aluminium strands, its characterized in that still includes:
at least one taper part fixed on the composite core rod exposed out of the aluminum stranded wire, wherein the taper part is formed by integrally covering yarns and solidifying the same materials as the composite core rod;
and the accessory is fixedly arranged on the composite core rod through fastening fit with the outer conical surface of the conical part.
2. The composite cable connection assembly of claim 1,
the tapered portion comprises at least one first tapered section;
the accessory comprises at least one connector;
the connecting piece is fixed on the composite core rod through fastening fit with the outer conical surface of the first conical section.
3. The composite cable connection assembly of claim 2,
the taper part also comprises at least one second taper section, the taper of the first taper section is opposite to that of the second taper section, and a space is reserved between the first taper section and the second taper section;
the accessory further comprises at least one auxiliary element;
the auxiliary part is fixed on the composite core rod through fastening fit with the outer conical surface of the second taper section.
4. The composite cable connection assembly of claim 3,
the first taper section and the second taper section each comprise a first taper portion, a second taper portion, and an extension portion;
the first conical part is connected with the extending part through the second conical part;
the first conical part and the second conical part have opposite tapers.
5. The composite cable connection assembly of claim 4,
the included angle between the inclined surface of the first conical part and the central line of the first conical part is 0.1-15 degrees.
6. The composite cable connection assembly of claim 1,
the connecting piece is provided with a first tapered hole matched with the first taper part of the first tapered section, and the taper of the first tapered hole is the same as that of the first taper part of the first tapered section;
the auxiliary part is provided with a second taper hole matched with the first taper part of the second taper section, and the taper of the second taper hole is the same as that of the first taper part of the second taper section.
7. The composite cable connection assembly of claim 2,
the connecting piece is made of a metal material;
the composite core rod is made of carbon fiber composite materials or glass fiber composite materials.
8. A strain-resistant hardware tool is characterized in that,
comprising a strain tube, a steel anchor, a liner tube, and a composite cable connection assembly according to any one of claims 1-7;
the lining pipe is fixedly sleeved outside the aluminum stranded wire, and one end of the lining pipe is abutted against one end of the accessory or one end of the steel anchor;
the accessory is partially or completely positioned in the steel anchor and is partially or completely in threaded connection with the steel anchor;
the tension tube is fixedly sleeved outside the lining tube and the steel anchor, one part of the lining tube is exposed outside the tension tube, and one part of the steel anchor is exposed outside the tension tube.
9. The composite cable strain-resistant hardware fitting of claim 8,
the accessory comprises a connecting piece and an auxiliary piece;
the connecting piece is completely positioned inside the steel anchor;
one end of the auxiliary part is provided with a limiting table, one end of the limiting table abuts against one end, located in the strain pipe, of the lining pipe, and the other end of the limiting table abuts against one end, located in the strain pipe, of the steel anchor.
10. The composite cable strain-resistant hardware fitting of claim 8,
and the outer wall of the aluminum stranded wire and the outer surface of the lining pipe are coated with conductive layers.
11. A method for mounting a strain-resistant hardware fitting, wherein the strain-resistant hardware fitting is the structure of any one of claims 8 to 10, comprising the steps of:
s1: stripping the aluminum stranded wires of the composite cable core to expose the composite core rod;
s2: taking the inner lining pipe, and penetrating and sleeving the end of the stripped composite core rod on the composite cable core;
s3: taking the strain pipe, and inserting the strain pipe into the composite core rod end after being stripped;
s4: sleeving the accessory on the composite core rod;
s5: covering yarns on the composite core rod, and curing and forming a taper part on the composite core rod outside the accessory;
s6: tensioning the accessory towards the tapered portion such that the accessory is secured to the tapered portion;
s7: screwing the steel anchor so that the accessory is partially or completely positioned in the steel anchor;
s7: pushing the strain tube to approach the steel anchor tightly;
s8: penetrating the lining pipe into the strain pipe and tightly propping the strain pipe;
s9: and (3) adopting a crimping tool to crimp the surface of the strain tube according to the marked crimping area, so that the strain tube can hold the steel anchor and the composite cable core tightly.
CN202010699416.2A 2020-07-20 2020-07-20 Composite cable connecting assembly, strain fitting and mounting method Pending CN111740377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010699416.2A CN111740377A (en) 2020-07-20 2020-07-20 Composite cable connecting assembly, strain fitting and mounting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010699416.2A CN111740377A (en) 2020-07-20 2020-07-20 Composite cable connecting assembly, strain fitting and mounting method

Publications (1)

Publication Number Publication Date
CN111740377A true CN111740377A (en) 2020-10-02

Family

ID=72655031

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010699416.2A Pending CN111740377A (en) 2020-07-20 2020-07-20 Composite cable connecting assembly, strain fitting and mounting method

Country Status (1)

Country Link
CN (1) CN111740377A (en)

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