Bending-resistant elevator monitoring cable

Abstract

The utility model discloses a bending-resistant elevator monitoring cable in the cable field, which comprises a power unit, a signal control unit, a video transmission unit, a tensile unit and an outer sheath, and is characterized in that the outer sheath comprises a sheath main body and reinforcing parts symmetrically distributed on two sides of the sheath main body; the power unit, the signal control unit and the video transmission unit are arranged in the sheath main body, the tensile unit is arranged in the reinforcing part, the sheath main body comprises four chamfered edges distributed along the length direction of the sheath main body, the reinforcing part comprises two chamfered edges distributed along the length direction of the reinforcing part, and the two chamfered edges are arranged on the sheath main body. A pressure reduction channel is formed in the center of the sheath body in the length direction of the sheath body, and a plurality of longitudinal grooves are formed in the side, bent inwards, of the sheath body and distributed at equal intervals in the length direction of the sheath body. The cable of the utility model has good bending resistance and large tensile strength.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and particularly relates to a bending-resistant elevator monitoring cable. Background Art

[0002] Elevators are an indispensable tool in today's life, and elevator monitoring cables are one of the important tools for monitoring and controlling elevators. When the elevator is in operation, the elevator monitoring cable needs to move up and down with the elevator. Frequent movement and bending require that the elevator monitoring cable should not be easily broken during movement. However, in the existing technology, the sheath of the elevator monitoring cable will prematurely experience fatigue fracture, which will affect the service life of the cable. Utility Model Content

[0003] The utility model aims to provide a bending-resistant elevator monitoring cable, which has good bending resistance and greater tensile strength.

[0004] The purpose of the utility model is achieved as follows: a bending-resistant elevator monitoring cable, comprising a power unit, a signal control unit, a video transmission unit, a tensile unit and an outer sheath, the outer sheath comprising a sheath body and reinforcement parts symmetrically distributed on both sides of the sheath body, the power unit, the signal control unit, and the video transmission unit are arranged in the sheath body, the tensile unit is arranged in the reinforcement part, the sheath body comprises four chamfered edges distributed along its length direction, the reinforcement part comprises two chamfered edges distributed along its length direction, a decompression channel is opened at the center of the sheath body along its length direction, a plurality of longitudinal grooves are opened on the inwardly bent side of the sheath body, and the plurality of longitudinal grooves are equally spaced along the length direction of the sheath body.

[0005] The utility model is free hanging before use to ensure sufficient back-twist; during installation, multiple cables should be laid vertically in rows. The main thing to note is that when fixing the non-moving part of the cable, it is necessary to ensure that the side of the sheath body that bends outward (i.e., the side without the longitudinal groove) fits the well. Compared with the prior art, the beneficial effects of the utility model are: by setting symmetrically distributed tensile units, the cable has a greater tensile strength; by setting multiple chamfered edges, the weight of the cable itself is reduced; by providing a decompression channel and a longitudinal groove, the cable's own weight is further reduced without affecting the wear resistance of the outer sheath, providing a certain bending space for the cable, avoiding fatigue fracture caused by multiple bending, and extending the service life of the cable.

[0006] As a further improvement of the present invention, the cross-sections of the sheath body and the reinforcement portion are both rectangular structures.

[0007] As a further improvement of the present invention, the cross section of the longitudinal groove is a triangular structure with the bottom facing outwards or a trapezoidal structure with the bottom facing outwards.

[0008] As a further improvement of the utility model, the power unit includes two power cores, the signal control unit includes two control cores, the two power cores are twisted into a cable core with two control cores and fillers, the video transmission unit includes a video core, and the video core and the cable core are symmetrically distributed on both sides of the decompression channel.

[0009] As a further improvement of the utility model, the tensile unit includes two reinforcing cores, and the reinforcing cores are formed by twisting multiple strands of steel wires.

[0010] As a further improvement of the utility model, the power line core includes a first conductor formed by twisting a plurality of copper wires and a first insulating layer coated on the outside of the first conductor.

[0011] As a further improvement of the utility model, the video cable core includes a second conductor made of copper-clad steel and a second insulating layer coated on the outside of the second conductor, and a braided copper mesh is wrapped around the outside of the second insulating layer as a shielding layer.

[0012] As a further improvement of the utility model, an anti-sticking layer is provided between the outer sheath and the first insulating layer and the shielding layer, and the anti-sticking layer is formed by wrapping a non-woven fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional view of the utility model.

[0015] Among them, 1 outer sheath, 101 sheath body, 102 reinforcement part, 103 chamfered edge, 104 pressure relief channel, 105 longitudinal groove, 2 power line core, 201 first conductor, 202 first insulation layer, 3 control line core, 4 filler, 5 video line core, 501 second conductor, 502 second insulation layer, 503 shielding layer, 6 reinforcement core. DETAILED DESCRIPTION

[0016] like Figure 1 and 2As shown, a bending-resistant elevator monitoring cable comprises a power unit, a signal control unit, a video transmission unit, a tensile unit and an outer sheath 1, wherein the outer sheath 1 comprises a sheath body 101 and reinforcement parts 102 symmetrically distributed on both sides of the sheath body 101, preferably, the cross sections of the sheath body 101 and the reinforcement part 102 are both rectangular structures; the power unit, the signal control unit and the video transmission unit are arranged in the sheath body 101, the tensile unit is arranged in the reinforcement part 102, the sheath body 101 comprises four chamfered edges 103 distributed along its length direction, the reinforcement part 102 comprises two chamfered edges 103 distributed along its length direction, a decompression channel 104 is provided at the center of the sheath body 101 along its length direction, a plurality of longitudinal grooves 105 are provided on the inwardly bent side of the sheath body 101, and the plurality of longitudinal grooves 105 are equally spaced along the length direction of the sheath body 101, and the cross section of the longitudinal groove 105 is preferably a triangular structure with the bottom side facing outward or a trapezoidal structure with the bottom facing outward.

[0017] In this embodiment, the power unit includes two power cores 2, the signal control unit includes two control cores 3, the two power cores 2 are twisted with the two control cores 3 and the filler 4 to form a cable core, the video transmission unit includes a video core 5, and the video core 5 and the cable core are symmetrically distributed on both sides of the pressure reduction channel 104; the tensile unit includes two reinforcing cores 6, and the reinforcing core 6 is formed by twisting multiple strands of steel wire; the power core 2 includes a first conductor 201 formed by twisting multiple strands of copper wire and a first insulating layer 202 coated on the outside of the first conductor 201; the video core 5 includes a second conductor 501 made of copper-clad steel and a second insulating layer 502 coated on the outside of the second conductor 501, and the outside of the second insulating layer 502 is wrapped with a woven copper mesh as a shielding layer 503; an anti-sticking layer is provided between the outer sheath 1 and the first insulating layer 202 and the shielding layer 503, and the anti-sticking layer is formed by wrapping non-woven fabric.

[0018] The advantages of the utility model are: using copper wire as the conductor makes the power line core 2 have good fatigue resistance and is not easy to break after repeated bending; using copper-clad steel as the conductor, its tensile strength is 3 to 5 times that of pure copper conductor, which improves the tensile strength of the video line core 5 and reduces the production cost; by setting an anti-sticking layer, the wire core and the outer sheath 1 can be prevented from adhering, which is convenient for stripping and wiring.

[0019] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A bending-resistant elevator monitoring cable, characterized in that: The invention comprises a power unit, a signal control unit, a video transmission unit, a tensile unit and an outer sheath, wherein the outer sheath comprises a sheath body and reinforcement parts symmetrically distributed on both sides of the sheath body, the power unit, the signal control unit and the video transmission unit are arranged in the sheath body, the tensile unit is arranged in the reinforcement part, the sheath body comprises four chamfered edges distributed along its length direction, the reinforcement part comprises two chamfered edges distributed along its length direction, a decompression channel is provided at the center of the sheath body along its length direction, a plurality of longitudinal grooves are provided on the inwardly bent side of the sheath body, and the plurality of longitudinal grooves are evenly spaced along the length direction of the sheath body.

2. The bending-resistant elevator monitoring cable according to claim 1, characterized in that: The cross sections of the sheath body and the reinforcement part are both rectangular structures.

3. The bending-resistant elevator monitoring cable according to claim 1, characterized in that: The cross section of the longitudinal groove is a triangular structure with the bottom facing outwards or a trapezoidal structure with the bottom facing outwards.

4. The bending-resistant elevator monitoring cable according to claim 1, characterized in that: The power unit includes two power cores, the signal control unit includes two control cores, the two power cores are twisted with the two control cores and fillers to form a cable core, the video transmission unit includes a video core, and the video core and the cable core are symmetrically distributed on both sides of the decompression channel.

5. The bending-resistant elevator monitoring cable according to claim 1, characterized in that: The tensile unit comprises two reinforcing cores, and the reinforcing cores are formed by twisting a plurality of steel wires.

6. The bending-resistant elevator monitoring cable according to claim 4, characterized in that: The power line core comprises a first conductor formed by twisting a plurality of copper wires and a first insulating layer covering the outside of the first conductor.

7. The bending-resistant elevator monitoring cable according to claim 4, characterized in that: The video line core comprises a second conductor made of copper-clad steel and a second insulating layer coated on the outside of the second conductor, and a braided copper mesh is wrapped around the outside of the second insulating layer as a shielding layer.

8. The bending-resistant elevator monitoring cable according to claim 6, characterized in that: An anti-sticking layer is arranged between the outer sheath and the first insulating layer and the shielding layer, and the anti-sticking layer is formed by wrapping non-woven fabric.

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