CN201904142U

CN201904142U - Medium-voltage reeling cable for port machinery

Info

Publication number: CN201904142U
Application number: CN 201020685662
Authority: CN
Inventors: 李永江; 陆云春
Original assignee: Jiangsu Yuanyang Dongze Cable Co Ltd
Current assignee: Jiangsu Yuanyang Dongze Cable Co Ltd
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2011-07-20
Anticipated expiration: 2020-12-29

Abstract

The utility model discloses a medium-voltage reeling cable for port machinery, belongs to the field of cables, and aims to solve the problem of low mechanical strength of the cable in the prior art. The medium-voltage reeling cable comprises a cable core, a filling core arranged in the internal gaps of the cable core, an inner sheath extruded at the periphery of the cable core, a nylon reinforcing layer wrapped outside the inner sheath, and an outer sheath extruded outside the nylon reinforcing layer, wherein the cable core is formed by stranding three insulating core wires and three grounding wires; the three grounding wires are spaced in the gaps around the three insulating core wires; and each insulating core wire comprises a conductor which is formed by stranding a plurality of copper wire bundles to form strands and then stranding the strands, an inner shielding layer wrapped outside the conductor, an ethylene-propylene rubber insulating layer wrapped outside the inner shielding layer, an insulating shielding layer wrapped outside the insulating layer, and a tinned copper wire braid ply wrapped outside the insulating shielding layer. By adopting the multi-strand conductor, the multi-layer extruded structure and the filling core positioned in the internal gaps of the conductor bundles of the cable core, the mechanical strength of the cable is increased. The medium-voltage reeling cable can be applied to the port machinery.

Description

Writing that surpasses all the others dish cable during the port machine is used

Technical field

The utility model relates to a kind of cable, writing that surpasses all the others dish cable during particularly a kind of port machine is used.

Background technology

Fast development along with China's water transportation industry, the dynamics of investment of port construction is progressively accelerated, riverine, coastal cargo throughput of port is risen progressively year by year, thereby driven harbour cargo handling equipment to scientific, the development of automation aspect is particularly active, emerged in large numbers all kinds of harbours loop wheel machine of many novel high-performances, because the needs of loop wheel machine operation principle, the motor power transmission line then needs frequent lifting in the loop wheel machine, be wound on back and forth on the reel of loop wheel machine, this just all has higher requirement to the flexibility and the mechanical strength of cable, in the prior art, a kind of naval vessel and ocean engineering high flexible cable are arranged, publication number is: CN201549253U, comprise the cored wire conductor of being made up of some tinned copper wires, tinned copper wire is divided into soft dried bundle, and the equidirectional stranded synnema of every Shu Zishen constitutes strand, all strand is twisted into cored wire conductor in the other direction again, and cored wire conductor is extruded with insulating barrier outward.This cable adopts equidirectional disposable synnema, form strand, strand carries out multiple strand in the other direction then, avoided tinned copper wire occur to jump the silk local thin phenomenon of crossing that causes insulating, cause insulation breakdown, make its pliability good, its weak point is: this cable has only extruded insulating barrier outside cored wire conductor, make that the mechanical strength of cable itself is low, the power that stretched effect cable is fragile.

The utility model content

The purpose of this utility model be to provide a kind of port machine with in writing that surpasses all the others dish cable, make cable machinery intensity height, pliability is good, long service life.

For solving above technical problem, the utility model provides writing that surpasses all the others dish cable in the machine usefulness of port, after comprising that some copper wire bundles are twisted into strand, strand carries out the conductor that multiple strand forms again, described conductor is coated with internal shield, described internal shield is coated with ethylene propylene rubber insulated layer, and described insulating barrier is coated with insulation screen, and insulation screen is coated with tincopper fuse wire braided armor becomes the insulation heart yearn; Three thoroughly do away with the edge heart yearn is provided with three spaced earth connections, three described insulation heart yearns and three stranded cable cores that become of described earth connection in the slit on every side; The intermediate gaps of described cable core is provided with filled core, and described cable core periphery is extruded with inner sheath, and inner sheath is coated with cotton synthetic fibre reinforced layer, and cotton synthetic fibre reinforced layer is extruded with oversheath outward.

Compared with prior art, the beneficial effects of the utility model are: the utility model carries out the conductor that multiple strand is made after adopting and earlier some copper wire bundles being twisted into strand again, has avoided copper wire silk to occur jumping and has caused insulation breakdown; Adopt conductor to extrude screen outward, screen is provided with insulating barrier outward, and insulating barrier is provided with insulation screen outward, and insulation screen is provided with the sandwich construction of braid outward, avoids causing cable to break because of Cable Bending Radius is too small, has improved the pliability of heart yearn bundle; Be arranged on the filled core of insulated electric conductor intermediate gaps, further improved the anti-mechanical pulling force of cable, the anti-mechanical pulling force of the cotton synthetic fibre reinforced layer that is provided with between inner sheath and the oversheath is effective, thereby has improved the mechanical strength of cable.The utility model can be used in the machine of port.

As improvement of the present utility model, described brass wire diameter is 0.4mm.Guaranteed the pliability of cable.

As further improvement of the utility model, lay ratio was 8～10 when described copper wire bundle twisted, and lay ratio was not more than 11 when described strand was stranded, and lay ratio was not more than 12 when described insulation cored wire conductor was stranded.Can further improve the pliability of cable.

As further improvement of the utility model, described screen, insulation shielding layer material are flexible nonmetal semiconductive material.In the shielding properties that strengthens between conductor, guaranteed the pliability of cable.

As further improvement of the utility model, described inner sheath, jacket material are wear-resisting high-modulus neoprene.Improve the mechanical strength of sheath, thereby improved the mechanical strength of cable.

Description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: 1 oversheath, 2 cotton synthetic fibre reinforced layers, 3 inner sheaths, 4 braids, 5 insulation screens, 6 insulating barriers, 7 earth connections, 8 filled cores, 9 internal shields, 10 conductors.

Embodiment

As shown in Figure 1, be writing that surpasses all the others dish cable in the port machine usefulness, after comprising that some copper wire bundles are twisted into strand, strand carries out the conductor 10 that multiple strand forms again, brass wire diameter is 0.4mm, lay ratio is 8～10 during the copper wire bundle strand, lay ratio was not more than 11 when strand was stranded, lay ratio was not more than 12 when insulation cored wire conductor 10 was stranded, conductor 10 is coated with internal shield 9, and internal shield 9 is coated with ethylene propylene rubber insulated layer 6, and insulating barrier 6 is coated with insulation screen 5, screen, insulation screen 5 materials are flexible nonmetal semiconductive material, and insulation screen 5 is coated with tincopper fuse wire braided armor 4 becomes the insulation heart yearn; Three thoroughly do away with the edge heart yearn is provided with three spaced earth connections 7, three eradication edge heart yearn and three described earth connection 7 stranded cable cores that become in the slit on every side; The intermediate gaps of cable core is provided with filled core 8, and the cable core periphery is extruded with inner sheath 3, and inner sheath 3 is coated with cotton synthetic fibre reinforced layer 2, is extruded with oversheath 1 outside the cotton synthetic fibre reinforced layer 2, and inner sheath 3, oversheath 1 material are wear-resisting high-modulus neoprene.

The utility model carries out the conductor that multiple strand is made after adopting and earlier some copper wire bundles being twisted into strand again, has avoided copper wire silk to occur jumping and has caused insulation breakdown; Adopt sandwich construction, avoid causing cable to break, improved the pliability of heart yearn bundle because of Cable Bending Radius is too small; Be arranged on the filled core 8 of insulated electric conductor intermediate gaps, further improved the anti-mechanical pulling force of cable, the cotton synthetic fibre reinforced layer 2 anti-mechanical pulling force that are provided with between inner sheath 3 and the oversheath 1 are effective, thereby improved the mechanical strength of cable.In order to guarantee the pliability of cable, brass wire diameter is 0.4mm; Suitable lay ratio can further improve the pliability of cable; The internal shield 9 of flexible nonmetal semiconductive material, insulation screen 5 can guarantee the shield effectiveness of 10 of conductors, also can improve the pliability of cable, select for use wear-resisting high-modulus chloroprene rubber material to make sheath, have further guaranteed the mechanical strength of cable.

In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.

Claims

1. writing that surpasses all the others dish cable during the port machine is used, it is characterized in that: after comprising that some copper wire bundles are twisted into strand, strand carries out the conductor that multiple strand forms again, described conductor is coated with internal shield, described internal shield is coated with ethylene propylene rubber insulated layer, described insulating barrier is coated with insulation screen, and insulation screen is coated with tincopper fuse wire braided armor becomes the insulation heart yearn; Three thoroughly do away with the edge heart yearn is provided with three spaced earth connections, three described insulation heart yearns and three stranded cable cores that become of described earth connection in the slit on every side; The intermediate gaps of described cable core is provided with filled core, and described cable core periphery is extruded with inner sheath, and inner sheath is coated with cotton synthetic fibre reinforced layer, and cotton synthetic fibre reinforced layer is extruded with oversheath outward.

2. writing that surpasses all the others dish cable during port according to claim 1 machine is used, it is characterized in that: described brass wire diameter is 0.4mm.

3. writing that surpasses all the others dish cable during port according to claim 1 and 2 machine is used is characterized in that: lay ratio was 8～10 when described copper wire bundle twisted, and lay ratio was not more than 11 when described strand was stranded, and lay ratio was not more than 12 when described insulated electric conductor was stranded.

4. writing that surpasses all the others dish cable during port according to claim 1 and 2 machine is used, it is characterized in that: described screen, insulation shielding layer material are flexible nonmetal semiconductive material.

5. writing that surpasses all the others dish cable during port according to claim 1 and 2 machine is used, it is characterized in that: described inner sheath, jacket material are wear-resisting high-modulus neoprene.