CN205303049U - Terraced cable of being under construction - Google Patents

Abstract

The utility model relates to a terraced cable of being under construction, including cable core and abrasive rubber sheath, the interior interval distribution of sheath has a plurality of cable cores, the cable core includes the electrically conductive core of aluminum alloy and winds the insulation protective layer of package in the electrically conductive core of aluminum alloy, the electrically conductive core center of aluminum alloy is inlayed and is equipped with wire rope, because the cable core adopts wire rope to twist again as the center and forms, bending property is good, and in the use, all on wire rope, tensile strength is high for main bearing capacity, and wire rope is nested in the cable core center, so from top to bottom during the round trip movement difficult the emergence shift, therefore difficult distortion, swell, the broken skin scheduling problem of taking place, long service life, light in weight, simple to operate, material cost is low.

Description

A kind of construction ladder cable

Technical field

This utility model relates to electric power cable technical field, particularly to a kind of construction ladder cable.

Background technology

Construction elevator is as important tool indispensable in architectural engineering, and every day will be run hundreds of times up and down, and this pliability being accomplished by its supporting construction ladder cable is eager to excel. Traditional construction ladder cable, its conductor many employings copper wire bundle strand forms, and adopts chlorinated polythylene insulating and sheath.

When above-mentioned construction ladder cable dispatches from the factory and installs, many being coiled in the shape of a spiral in circular cage forms torsion, in use procedure, cable two ends are fixed, when the cable of helical coil is straightened along with cage rises, twisting resistance is non-uniformly distributed on whole cable because of the vertical hanging of cable, and end is stretched by deadweight due to cable, and twisting resistance down discharges transmission, the firm liftoff part of hypomere discharges, because wanting superposition to bear, the twisting resistance transmitted above, it is easy to torsional deflection. So increasing with moving back and forth number of times, construction ladder cable is easily distorted the problems such as deformation, bulge, broken skin, and even the problem such as generation heart yearn fatigue break, causes cable to fall short of service life.

Utility model content

The purpose of this utility model is in that for the deficiencies in the prior art, it is provided that one is not susceptible to the problems such as torsional deformation, bulge, broken skin, heart yearn fatigue break, the construction ladder cable of long service life.

For solving the problems referred to above, this utility model provides techniques below scheme:

A kind of construction ladder cable; including cable core and abrasive rubber sheath; being intervally distributed with some cable cores in sheath, described cable core includes aluminium alloy conductive core material and around the insulating protective layer being wrapped in aluminium alloy conductive core material, and described aluminium alloy conductive core material center is embedded with steel wire rope.

Wherein in an embodiment, described aluminium alloy conductive core material is twisted again by many aluminum-alloy wires and is formed in described steel wire rope periphery.

Wherein in an embodiment, described steel wire rope radius is not less than the 1/4 of aluminium alloy conductive core material radius, and is not more than the 1/2 of aluminium alloy conductive core material radius.

Wherein in an embodiment, in sheath, equidistantly it is laid with at least 3 cable cores.

Wherein in an embodiment, between described cable core, dense packing effect has filler, and described filler is one-body molded with described sheath.

Wherein in an embodiment, described sheath radius is not less than 3 times of described cable core radius.

Compared with prior art, this utility model forms owing to cable core adopts steel wire rope to twist again as center, good bending property, in use, all on a steel cord, tensile strength is high for main bearing capacity, and steel wire rope is nested in cable core center, so being not susceptible to displacement when moving back and forth up and down, thus it is not susceptible to the problems such as torsional deformation, bulge, broken skin, and long service life, lightweight, easy for installation, the cost of material is low.

Accompanying drawing explanation

Fig. 1 is sectional structure schematic diagram of the present utility model.

Description of reference numerals: 1. steel wire rope, 2. aluminium alloy conductive core material, 3. insulating protective layer, 4. sheath.

Detailed description of the invention

Below in conjunction with Figure of description and embodiment, detailed description of the invention of the present utility model is described in further detail:

With reference to a kind of construction ladder cable shown in Fig. 1; including cable core and abrasive rubber sheath 4; some cable cores it are intervally distributed with in sheath 4; described cable core includes aluminium alloy conductive core material 2 and around the insulating protective layer 3 being wrapped in aluminium alloy conductive core material 2, and described aluminium alloy conductive core material 2 center is embedded with steel wire rope 1.

Forming owing to cable core adopts steel wire rope 1 to twist again as center, good bending property, in use, main bearing capacity is all on steel wire rope 1, and tensile strength is high, and indefatigability fractures. And steel wire rope 1 is nested in cable core center, so being not susceptible to displacement when moving back and forth up and down, thus being not susceptible to the problems such as torsional deformation, bulge, broken skin, long service life, lightweight, easy for installation, the cost of material is low.

Wherein, described steel wire rope 1 can adopt the high strength wire ropes such as aircraft cord wire 1. Described insulating protective layer 3 can adopt chlorinated polyethylene rubber material to prepare, and described abrasive rubber sheath 4 can adopt wear-resisting type chlorinated polyethylene rubber sheath 4.

Wherein in an embodiment, described aluminium alloy conductive core material 2 is twisted again by many aluminum-alloy wires and is formed in described steel wire rope 1 periphery. Aluminum-alloy wire adopts annealing process to process, and keeping, intensity on the basis of pliability is high, twists again in steel wire rope 1 periphery, aluminium alloy conductive core material 2 good integrity formed, further increases torsional resistance.

Wherein in an embodiment, described steel wire rope 1 radius is not less than the 1/4 of aluminium alloy conductive core material 2 radius, and is not more than the 1/2 of aluminium alloy conductive core material 2 radius. The too small then tensile strength of steel wire rope 1 radius is inadequate, and the excessive then deadweight of radius increases and torsional resistance declines, so rationally selecting to be not less than the 1/4 of aluminium alloy conductive core material 2 radius, and is not more than the 1/2 of aluminium alloy conductive core material 2 radius.

Wherein in an embodiment, in sheath 4, equidistantly it is laid with at least 3 cable cores. In an embodiment as shown in Figure 1, namely it is laid with 4 cable cores.

Wherein in an embodiment, between described cable core, dense packing effect has filler, and described filler is one-body molded with described sheath 4. I other words, described sheath 4 is coated on cable core periphery, each cable core is closely embedded in sheath 4, and eliminate the implants such as the pad rope made of hemp between each cable core, when cable bears twisting resistance, each cable core will not be shifted over and cause distortion of the cable, further increases dependability, extends service life.

Wherein in an embodiment, described sheath 4 radius is not less than 3 times of described cable core radius. By thickening sheath 4, increase sheath 4 elastic, to ensure to be unlikely, when whole cable bears bigger twisting resistance, the deformation that is distorted.

The above, it it is only preferred embodiment of the present utility model, not technical scope of the present utility model is made any restriction, therefore every any trickle amendment, equivalent variations and modification above example made according to technical spirit of the present utility model, all still fall within the scope of the technical solution of the utility model.

Claims (6)

1. a construction ladder cable; including cable core and abrasive rubber sheath; some cable cores it are intervally distributed with in sheath, it is characterised in that: described cable core includes aluminium alloy conductive core material and around the insulating protective layer being wrapped in aluminium alloy conductive core material, and described aluminium alloy conductive core material center is embedded with steel wire rope.

2. construction ladder cable according to claim 1, it is characterised in that: described aluminium alloy conductive core material is twisted again by many aluminum-alloy wires and is formed in described steel wire rope periphery.

3. construction ladder cable according to claim 2, it is characterised in that: described steel wire rope radius is not less than the 1/4 of aluminium alloy conductive core material radius, and is not more than the 1/2 of aluminium alloy conductive core material radius.

4. the construction ladder cable according to claim 1 ~ 3 any one, it is characterised in that: equidistantly it is laid with at least 3 cable cores in sheath.

5. construction ladder cable according to claim 4, it is characterised in that: between described cable core, dense packing effect has filler, and described filler is one-body molded with described sheath.

6. construction ladder cable according to claim 5, it is characterised in that: described sheath radius is not less than 3 times of described cable core radius.