CN-224217268-U - Durable drag chain cable

CN224217268UCN 224217268 UCN224217268 UCN 224217268UCN-224217268-U

Abstract

The utility model discloses a durable towline cable which comprises a cable core formed by arranging four groups of wire units in an array mode, wherein reinforcing cores are respectively filled in the center and the periphery of the cable core, a sheath is arranged outside the cable core in a coating mode, the wire units comprise three wires formed by covering insulating layers outside conductors, filling cores are filled in the periphery of the three wires, and the three wires and the filling cores are subjected to compound twisting forming to obtain the wire units. The cable core is formed by twisting the wires and the filling cores in a compound mode to obtain the wire units, the reinforcing cores are arranged at the center and the periphery of the cable core formed by the four groups of wire units, and the sheath is arranged outside the cable core in a coating mode, so that the overall tensile strength of the cable is improved, the twisting coefficient and the flexibility and deflection-resistant drag chain performance of the cable are improved, and the reliability and durability of the cable are improved by increasing the hot backup of the wire cores.

Inventors

QIAO EN
HUO SHUAIYING
WU FANG
HUANG JIE
JIANG YAO
LI JIANCHENG
ZHOU HU
LUO JIACHUN
JIANG YAO
CHEN WEI
HUANG YANG
ZENG KAI

Assignees

四川新蓉电缆有限责任公司

Dates

Publication Date: 20260508
Application Date: 20250512

Claims (6)

1. The durable drag chain cable is characterized by comprising a cable core formed by arranging four groups of wire units in an array, wherein reinforcing cores are respectively filled in the center and the periphery of the cable core, and a sheath is coated outside the cable core; The wire unit comprises three wires formed by coating insulating layers outside conductors, filling cores are filled and arranged on the peripheries of the three wires, and the three wires and the filling cores are twisted in a compound mode to obtain the wire unit; Conductors of three wires in the wire unit are stranded in the same direction, and the stranded direction of the conductors is opposite to the stranded direction of the wires; The sheath comprises an inner sheath, a reinforcing sleeve and an outer sheath which are sequentially arranged from inside to outside, wherein the inner sheath and the outer sheath are formed by extrusion of polyether polyurethane elastomer, the reinforcing sleeve is formed by braiding aramid fiber, the braiding angle is 40-50 degrees, and the braiding density is not lower than 60%; The repairing device comprises a reinforcing sleeve, an outer sheath, a repairing sleeve, a repairing capsule and two layers of cavities, wherein the repairing sleeve is arranged between the reinforcing sleeve and the outer sheath, the cavities are uniformly distributed in the repairing sleeve along the circumferential direction of the reinforcing sleeve, the repairing capsule is arranged in the cavities, the repairing capsule is filled with a repairing agent, the cavities are divided into two layers in the radial direction, and the two layers of cavities are sequentially staggered in the circumferential direction.
2. The durable tow chain cable according to claim 1, wherein the conductor bundle is twisted at a pitch ratio no greater than 20 times and the conductor unit is twisted at a pitch ratio no greater than 14 times.
3. The durable towline cable of claim 1, wherein said reinforcing and filling cores are aramid fibers.
4. A durable drag chain cable according to claim 1 or 3, wherein the diameter of the reinforcing core is not less than 0.8mm and the diameter of the filler core is not less than 0.6mm.
5. The durable tow cable of claim 1, wherein the insulating layer is extruded from ethylene propylene rubber.
6. The durable tow chain cable according to claim 1, wherein different numbers of color bars are provided in the insulation layer of each wire in the same wire unit.

Description

Durable drag chain cable Technical Field The utility model belongs to the technical field of cables, and particularly relates to a durable drag chain cable. Background In various equipment application scenes such as travelling crane, crown block, door machine, travelling crane, gantry crane, lifter, and the like, a mobile drag chain cable is required to be used for transmitting power and signals, and the cable is required to frequently bear bending, tensile stress strain and friction in the use process. Under the action of repeated stress strain, the cable is easy to damage, and once the towline cable fails in the running process of the equipment, a great accident risk is generated, so that the towline cable often needs to be replaced periodically. During cable replacement, the equipment needs to be in a stagnant state, and if the cable is replaced frequently, great economic loss is generated, so that the requirements on the durability of the drag chain cable are increasingly high in practical application. Disclosure of utility model The utility model aims to provide a durable type drag chain cable, which solves the problem that the drag chain cable is poor in durability and needs to be replaced frequently. The utility model is realized by the following technical scheme: The durable drag chain cable comprises a cable core formed by arranging four groups of wire units in an array, wherein reinforcing cores are respectively filled in the center and the periphery of the cable core, and a sheath is covered outside the cable core; the wire unit comprises three wires formed by coating and arranging insulating layers outside conductors, filling cores are filled and arranged on the peripheries of the three wires, and the three wires and the filling cores are twisted in a compound mode to obtain the wire unit. In some embodiments, the conductors of the three wires in the wire unit are stranded in the same direction, and the stranded direction of the conductors is opposite to the stranded direction of the wires. In some embodiments, the conductor bundle is twisted at a pitch ratio no greater than 20 times and the wire unit is twisted at a pitch ratio no greater than 14 times. In some embodiments, the reinforcing core and the filling core are made of aramid fibers. In some embodiments, the diameter of the reinforcing core is not less than 0.8mm and the diameter of the filling core is not less than 0.6mm. In some embodiments, the sheath comprises an inner sheath, a reinforcing sheath, and an outer sheath disposed in sequence from inside to outside; The inner sheath and the outer sheath are formed by extrusion of polyether polyurethane elastomer; the reinforcing sleeve is formed by braiding aramid fiber, the braiding angle is 40-50 degrees, and the braiding density is not lower than 60%. In some embodiments, a repair sleeve is arranged between the reinforcing sleeve and the outer sheath, a plurality of cavities are uniformly distributed in the repair sleeve along the circumferential direction of the repair sleeve, repair capsules are arranged in the cavities, and repair agents are filled in the repair capsules. In some embodiments, the cavities are arranged in two layers in the radial direction, and the two layers of cavities are staggered in turn in the circumferential direction. In some embodiments, the insulating layer is extruded from ethylene propylene rubber. In some embodiments, different numbers of color bars are provided within the insulating layer of each wire in the same wire unit. Compared with the prior art, the utility model has the following advantages: The utility model adopts the steps of twisting the lead wires and the filling core to obtain the lead wire units, arranging the reinforcing cores at the center and the periphery of the cable core formed by four groups of lead wire units, and arranging the sheath outside the cable core, thereby improving the overall tensile strength of the cable, improving the twisting coefficient, the flexibility and the deflection-resistant drag chain performance of the cable, and improving the reliability and the durability of the cable by increasing the hot backup of the wire core. Through the design of restoration cover, can repair the crackle of oversheath fast, resume the integrality of oversheath to effectively prevent that moisture, dust from entering into inside the cable, avoid leading to the sinle silk impaired because of the external damage of oversheath, thereby extension cable's life. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled