CN219553275U - Stretch-proofing elevator retinue control flat cable - Google Patents

Abstract

The utility model discloses a stretch-proof elevator trailing monitoring flat cable, which comprises a crosslinked fluororubber insulator, wherein two longitudinal holes are formed in the crosslinked fluororubber insulator at intervals, a video wire core and a combined wire core are sleeved in the two longitudinal holes respectively, two stretch-proof galvanized steel wires are symmetrically arranged at the left side and the right side of the crosslinked fluororubber insulator and jointly cover a nitrile-butadiene polyvinyl chloride sheath layer and an EVA wear-resistant layer, the video wire core comprises an inner conductor, the outer part of the inner conductor is sequentially covered with a silicone rubber longitudinal hole insulator, an iron powder polyethylene resin inner wrapping layer, a copper wire wrapping shielding layer and an iron powder polyethylene resin outer wrapping layer, the combined wire core comprises two control wire cores twisted in pairs and jointly twisted with two communication wire cores to form a combined wire core body, and the outer part of the combined wire core body is covered with a PET resin tape wrapping layer. The cable has balanced internal structure, better tensile property, difficult occurrence of core breakage and wire breakage, wear resistance, cracking resistance, better durability and prolonged service life.

Description

Stretch-proofing elevator retinue control flat cable

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to a stretch-proof elevator trailing monitoring flat cable.

Background

The elevator trailing monitoring cable can provide power control under the condition of long suspension length and bear mechanical stress. Because the self weight of the cable, the tension to be born and the tension to bear larger mechanical impact, the following monitoring cable structure is different from that of a common cable, and special design is needed, and a steel wire stranded wire bearing cable core is additionally arranged for long-distance suspension. However, the general follow-up monitoring cable structure is easy to concentrate local stress at two axial end parts of the cable section, so that the mechanical strength is low, when the follow-up monitoring cable is bent, the steel wire stranded wires arranged at the two ends can deviate towards the inner central part, so that the stress is concentrated on the inner wire core, the conductor and the shielding layer are easy to break, the abrasion and cracking phenomenon can occur when the follow-up monitoring cable works for a long time, the durability is poor, and the service life is short.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the stretch-proof elevator trailing monitoring flat cable which has balanced internal structure, better stretch-proof performance, less possibility of core breakage and wire breakage, wear resistance, cracking resistance, better durability and longer service life.

The utility model solves the technical problems through the following technical proposal.

The utility model provides a stretch-proofing elevator retinue control flat cable, includes crosslinked fluororubber insulator, the interval is equipped with two vertical holes on the crosslinked fluororubber insulator, two vertical downthehole cover respectively are equipped with video core and combination sinle silk, and two stretch-proofing galvanized steel wire rope symmetries set up crosslinked fluororubber insulator left and right sides and cladding butyronitrile polyvinyl chloride restrictive coating and EVA wearing layer jointly, the video core includes the inner conductor, the outside cladding of inner conductor has silicon rubber vertical hole insulator, iron powder polyethylene resin inner wrapping layer, copper wire wrapping shielding layer and iron powder polyethylene resin outer wrapping layer in proper order, the combination sinle silk includes two control sinle silk pair twists and forms the combination sinle silk body with two communication sinle silk intertwists jointly, the outside cladding of combination sinle silk has the PET resin area to wrap up the layer.

Preferably, the outer diameter ratio of the video wire core to the combined wire core is 1:1 to 1.15:1.

Preferably, the outer diameter ratio of the control wire core to the communication wire core is 2:1.

Preferably, the inner conductor is formed by concentrically twisting a plurality of tin-plated copper monofilaments having a diameter of 0.01mm to 0.04 mm.

Preferably, the iron powder polyethylene resin inner wrapping layer and the iron powder polyethylene resin outer wrapping layer are of an iron powder polypropylene resin composite belt unidirectional spiral lapping and wrapping structure, and the lapping rate is 15-20%.

Preferably, the copper wire wrapping shielding layer is formed by mutually reversely spirally winding inner and outer double-layer tinned copper wires, and the winding distance of the inner-layer tinned copper wires and the outer-layer tinned copper wires is different.

Preferably, the inner layer tinned copper wire diameter is 0.02mm to 0.05mm, the outer layer tinned copper wire diameter is 0.03mm to 0.08mm, and the inner layer tinned copper wire diameter is smaller than the outer layer tinned copper wire diameter.

Preferably, the control wire core comprises a control conductor and an XLPE insulating layer, wherein the control conductor is formed by twisting a plurality of tinned copper monofilaments and a plurality of para-type wholly aromatic copolyamide drawn fiber bundles together.

Preferably, the communication wire core comprises a communication conductor and a foamed polyethylene insulating layer, and the communication conductor is formed by twisting and compacting a plurality of soft copper wires to form a circular conductor structure.

Preferably, the two stretch-proofing galvanized steel wires are twisted in opposite directions.

The utility model has the beneficial effects that:

1. through establishing video core and combination sinle silk difference cover in two vertical holes of crosslinked fluororubber insulator, then with two stretch-proofing galvanized wire rope cladding butyronitrile polyvinyl chloride restrictive coating and EVA wearing layer jointly for cable inner structure is balanced, and the flexibility of crosslinked fluororubber insulator is better, can bear the lateral pressure when crooked, makes stretch-proofing galvanized wire rope keep effective interval between video core and the combination sinle silk, slows down cable section long axial both ends local stress concentration, helps reinforcing cable mechanical strength, improves stretch-proofing performance greatly, reduces sinle silk conductor and shielding layer broken core broken line. Moreover, when the cable is bent, the galvanized steel wire rope can be effectively prevented from deviating towards the adjacent wire core, the potential safety hazard of damaging the video wire core and the combined wire core is eliminated, the durability is better, and the service life of the cable is prolonged.

2. The EVA wear-resistant layer is coated on the outer part of the butyronitrile polyvinyl chloride sheath layer, so that the wear-resistant performance of the outer skin of the cable is improved, the occurrence of wear cracking is restrained, the durability of the cable is better, and the service life of the cable is prolonged.

3. Through the interior cladding that winds of iron powder polyethylene resin, copper line around package shielding layer and the outer cladding that winds of iron powder polyethylene resin form the shielding conductor jointly, greatly reduced signal attenuation, reinforce shielding performance, improve interference immunity ability, the outer layer of iron powder polyethylene resin composite tape is around the package of package shielding layer in the copper line, effectually prevent that the copper line from winding the loose problem of tinned copper wire easily taking place when crooked of package shielding layer, reduce torque force, help preventing that shielding layer broken wire from taking place, guarantee shielding characteristic's stability, the durability is better.

4. In the combined wire core, after being twisted, the two control wire cores are twisted with the two communication wire cores to form a wire core body, so that the structure is balanced, the occurrence of channeling is effectively prevented, the signal attenuation is reduced, the stability of signal transmission is ensured, and the electrical characteristics of the cable are improved. Local stress concentration can be reduced, torque force is reduced, flexibility of the combined wire core is improved, and broken cores and broken wires are reduced through wrapping the cladding by the PET resin tape.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model.

Reference numerals illustrate:

the cable comprises a 1-crosslinked fluororubber insulator, a 2-video cable core, a 3-combined cable core, a 4-stretch-proof galvanized steel wire rope, a 5-butyronitrile polyvinyl chloride sheath layer, a 6-EVA wear-resistant layer, a 7-inner conductor, an 8-silicone rubber longitudinal hole insulator, a 9-iron powder polyethylene resin inner wrapping layer, a 10-copper wire wrapping shielding layer, a 11-iron powder polyethylene resin outer wrapping layer, a 12-control cable core, a 13-communication cable core, a 14-PET resin tape wrapping layer, a 15-control conductor, a 16-XLPE insulating layer, a 17-communication conductor and a 18-foaming polyethylene insulating layer.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, the stretch-proof elevator trailing monitoring flat cable provided by the embodiment of the utility model comprises a crosslinked fluororubber insulator 1, wherein two longitudinal holes are formed in the crosslinked fluororubber insulator 1 at intervals, a video wire core 2 and a combined wire core 3 are respectively sleeved in the two longitudinal holes, and further, the outer diameter ratio of the video wire core 2 to the combined wire core 3 is 1:1 to 1.15:1. The two stretch-proofing galvanized steel wires 4 are symmetrically arranged on the left side and the right side of the cross-linked fluororubber insulator 1 and jointly cover the butyronitrile polyvinyl chloride sheath layer 5 and the EVA wear-resistant layer 6, and further, the twisting directions of the two stretch-proofing galvanized steel wires 4 are opposite.

The video wire core 2 comprises an inner conductor 7, wherein a silicon rubber longitudinal hole insulator 8, an iron powder polyethylene resin inner wrapping layer 9, a copper wire wrapping shielding layer 10 and an iron powder polyethylene resin outer wrapping layer 11 are sequentially wrapped outside the inner conductor 7, and specifically, the inner conductor 7 is formed by concentrically twisting a plurality of tin-plated copper monofilaments with diameters of 0.01-0.04 mm. In one embodiment, the iron powder polyethylene resin inner wrapping layer 9 and the iron powder polyethylene resin outer wrapping layer 11 are both iron powder polypropylene resin composite tape unidirectional spiral lapping and wrapping structures, and the lapping rate is 15% to 20%. In one embodiment, the copper wire wrapping shielding layer 10 is formed by mutually reversely spirally winding inner and outer double-layer tinned copper wires, the winding distance of the inner layer tinned copper wires and the outer layer tinned copper wires is different, further, the inner layer tinned copper wire diameter is 0.02mm to 0.05mm, the outer layer tinned copper wire diameter is 0.03mm to 0.08mm, and the inner layer tinned copper wire diameter is smaller than the outer layer tinned copper wire diameter.

The combined wire core 3 comprises two control wire cores 12 twisted in pairs and twisted together with two communication wire cores 13 to form a combined wire core body, and further, the outer diameter ratio of the control wire cores 12 to the communication wire cores 13 is 2:1. The combined wire core is externally coated with a PET resin tape wrap 14. In one embodiment, the control wire core 12 includes a control conductor 15 and an XLPE insulation layer 16, where the control conductor 15 is formed by twisting a plurality of tinned copper monofilaments and a plurality of para-type wholly aromatic copolyamide drawn fiber bundles together. In one embodiment, the communication wire core 13 includes a communication conductor 17 and a foamed polyethylene insulation layer 18, and the communication conductor 17 is formed by twisting and compacting a plurality of soft copper wires into a circular conductor structure.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. Stretch-proofing elevator retinue control flat cable, characterized by: including crosslinked fluororubber insulator (1), it is equipped with two vertical holes to separate on crosslinked fluororubber insulator (1), two vertical downthehole cover respectively are equipped with video core (2) and combination sinle silk (3), and two stretch-proofing galvanized steel wire ropes (4) symmetry set up crosslinked fluororubber insulator (1) left and right sides and cladding butyronitrile polyvinyl chloride restrictive coating (5) and EVA wearing layer (6) jointly, video core (2) include inner conductor (7), the outside cladding of inner conductor (7) has silicon rubber vertical hole insulator (8), iron powder polyethylene resin in proper order around covering (9), copper wire around covering shielding layer (10) and iron powder polyethylene resin outside around covering (11), combination sinle silk (3) include two control sinle silk (12) twisted and form the assembly jointly with two communication sinle silk (13), the outside cladding of combination sinle silk has PET resin area to wind covering (14).

2. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: the outer diameter ratio of the video wire core (2) to the combined wire core (3) is 1:1 to 1.15:1.

3. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: the outer diameter ratio of the control wire core (12) to the communication wire core (13) is 2:1.

4. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: the inner conductor (7) is formed by concentrically twisting a plurality of tinned copper monofilaments with diameters of 0.01mm to 0.04 mm.

5. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: the iron powder polyethylene resin inner wrapping layer (9) and the iron powder polyethylene resin outer wrapping layer (11) are of an iron powder polypropylene resin composite belt unidirectional spiral lapping and wrapping structure, and the lapping rate is 15-20%.

6. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: copper wire is around package shielding layer (10) is inside and outside double-deck tinned wire each other for reverse spiral winding formation, and the winding distance of inlayer tinned wire and outer tinned wire is different.

7. The stretch-proof elevator trailing monitoring flat cable of claim 6, wherein: the inner layer tinned copper wire diameter is 0.02mm to 0.05mm, the outer layer tinned copper wire diameter is 0.03mm to 0.08mm, and the inner layer tinned copper wire diameter is smaller than the outer layer tinned copper wire diameter.

8. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: the control wire core (12) comprises a control conductor (15) and an XLPE insulating layer (16), wherein the control conductor (15) is formed by twisting a plurality of tinned copper monofilaments and a plurality of para-type wholly aromatic copolyamide drawn fiber bundles together.

9. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: the communication wire core (13) comprises a communication conductor (17) and a foaming polyethylene insulating layer (18), wherein the communication conductor (17) is formed by twisting and compacting a plurality of soft copper wires.

10. The stretch-proof elevator trailing monitoring flat cable of claim 1, wherein: the twisting directions of the two stretch-proof galvanized steel wire ropes (4) are opposite.