CN210896649U - Special windproof cable for port crane - Google Patents

Abstract

The utility model relates to the technical field of cables, to the poor problem of stability and the anti bending ability of preventing wind cable prior art, disclose special cable of preventing wind of port crane, including the surrounding layer, be equipped with wire, enhancement counterweight and central dacron silk rubber strip enhancement core in the surrounding layer, the wire closely arrange in around the core is strengthened to central dacron silk rubber strip, strengthen counterweight cladding around the wire. The utility model discloses following beneficial effect has: (1) the conductor, the insulating core, the counterweight reinforcing core and the sheath are ensured not to be capable of moving in a mutual string manner, so that the self weight of the cable is improved, and the cable can be enhanced in anti-shaking performance; (2) the wind resistance of the cable for the port hoisting machinery is greatly improved, and the weighted cable can still keep the bending performance meeting the use requirement; (3) the anti-breaking capacity of the cable is obviously improved, and the cable is suitable for moving and bending occasions and has excellent weather resistance.

Description

Special windproof cable for port crane

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a special cable of preventing wind of port crane is related to.

Background

The working state and operation of the port crane frequently determine that the cable matched with the port crane has excellent mechanical property, flexibility and shake and winding resistance. In the field, port machine cables matched by a plurality of cable manufacturers in China all adopt cables with conventional design, and the cables have very short service cycle and the safety performance cannot be guaranteed on the occasion; the research and development of the special windproof cable for the high-performance port crane are urgent, and the application of the special windproof cable for the high-performance port crane is imperative, which arouses the high attention of many cable enterprises in China.

The common cable for the port machine has the problems of distortion, bulging, skin breaking, core wire breaking and the like when being used on a crane, the service life of the cable is short, the common busy crane can be used for hundreds of times every day, day after day, the lower end of the cable is over-fatigued and gradually deforms under the action of torsional force and external wind blowing sloshing force, the technical requirements for the matched cable are greatly different along with the continuous change of the height of the crane, in the operation process of the crane, the cable can be influenced by the external environment and wind power to generate large sloshing force, the torsional stress in the cable can be larger, after the traditional cable for the port machine is used for the crane, the torsional stress can not be timely eliminated or relieved, and the core breaking can be frequently caused, so the common cable for the port machine is difficult to be used on the crane for a long time. In order to meet the normal operation of port crane equipment and prolong the service life of cables, special cables special for port cranes must be used under the condition, and high-performance windproof cables special for port cranes are researched and developed, so that the special requirements of the port crane industry can be met.

For example, patent number CN201120046752.3, patent name "prevent wind type harbour crane cable for hoist", the utility model discloses a prevent wind type harbour crane cable for hoist, characterized by, the cable includes that one aggravates the part group and centers on aggravating a set of little cable core that the part was arranged, and every group little cable core includes that one aggravates the part and centers on aggravating a set of sinle conductor that the part was arranged, and every sinle conductor outside cladding has a sinle silk insulating layer, and the cable is by interior toward being equipped with in proper order outward and protecting jacket, and the protecting jacket inboard is equipped with a set of tear line. The cable for the wind-proof port crane lifting appliance has the following advantages: firstly, the weight of the interior of the cable is increased by using a lead bead chain, so that the whole cable has larger weight and excellent windproof performance; and secondly, the cable is provided with a tear line, so that the sheath can be conveniently peeled off during cable installation and laying.

The cable has the disadvantages that the cable is provided with the tearing line, the cable is easy to damage when the cable is bent, and the influence on the tightness of the cable structure is large.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the poor problem of stability and the anti bending ability of preventing wind cable prior art, provide the special cable of preventing wind of harbour crane, a combination type cable structure is provided, this structure can solidify the cable core into a whole from interior to exterior with cable structure, ensured the conductor, insulating core, can not the intercolumnation between counter weight enhancement core and the sheath move, can promote cable self weight like this, more can play the anti performance of rocking of cable reinforcing, can keep satisfying operation requirement's bending performance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the special windproof cable for the port crane comprises an outer cladding layer, wherein a conducting wire, a reinforcing weight piece and a central polyester yarn rubber strip reinforcing core are arranged in the outer cladding layer, the conducting wire is closely arranged around the central polyester yarn rubber strip reinforcing core, and the reinforcing weight piece is coated around the conducting wire.

The cable conductor is stranded by adopting a plurality of strands of round annealed copper wires (conductor 6) and is extruded and insulated; 1 polyester yarn rubber strip reinforcing core is placed in a central gap of a twisted cable core, a reinforcing weight piece (polyester yarn reinforcing core, lead bead chain and aramid fiber yarn woven weight strip) is used for filling a peripheral gap of the twisted cable core, and the twisted cable core is wrapped with a tape so that the twisted cable core is in full contact with the lead bead chain; and then extruding and wrapping the high-flexibility TPU elastomer sheath. The cable is additionally provided with the plurality of longitudinal weight-increasing lead bead chains, so that the cable is multiplied in weight and has good gravity sag property, the sectional area of the cable cannot be greatly increased, the wind resistance of the cable is obviously improved, the large-amplitude shaking of the cable in the strong wind operation can be eliminated, the cable still has good bending performance, the moving and retracting requirements can be met, the breaking resistance of the cable is also obviously improved, and the cable is suitable for being used in moving and bending occasions.

The combined mode can solidify the cable structure into a whole from inside to outside of the cable core, and ensures that the conductor, the insulating core, the counterweight reinforcing core and the sheath cannot be mutually stringed, so that the self weight of the cable can be improved, and the cable can be enhanced in anti-shaking performance. The wind resistance of the cable for the port hoisting machinery is greatly improved, the cable can still keep operation under strong wind, and the weighted cable can still keep the bending performance meeting the use requirement. The fiber woven sleeve of the metal chain outer sleeve not only ensures the strength of the metal chain, but also effectively protects the insulated wire core from being damaged.

Preferably, the outer covering layer comprises a high-strength wrapping tape, an inner sheath, a tin-plated wire shielding layer and an outer sheath which are sequentially arranged from inside to outside.

The adoption of the multi-layer composite coating layer can meet the requirements of movement and retraction of the cable, has stronger toughness and tensile strength, also obviously improves the fracture resistance of the cable, is suitable for being used in moving and bending occasions, and has excellent weather resistance.

Preferably, the reinforcing and balancing parts are provided with a plurality of reinforcing and balancing parts, lead bead chain center polyester fiber reinforcing cores are arranged in the middle of the reinforcing and balancing parts, lead bead chain outer aramid fiber woven layers are arranged on the surface layers of the reinforcing and balancing parts, and lead bead chains are filled between the lead bead chain center polyester fiber reinforcing cores and the lead bead chain outer aramid fiber woven layers arranged on the surface layers.

A plurality of longitudinal weighting lead bead chains are additionally arranged in the gaps at the center and the periphery of the cable; the center of the lead bead chain for the counterweight adopts a polyester yarn reinforced core, and the periphery adopts an improvement of an aramid yarn fiber braided layer protection structure; the aramid fiber woven layer protection structure enables the cable inner structure formed by the aramid fiber woven layer protection structure not to move in a string mode, has strong flexibility and bending resistance, enhances the wear resistance of the cable, and can ensure that the cable has an obvious protection effect on mutual friction of inner core wires of the cable in a long-term winding state.

Preferably, the number of the conducting wires is a plurality, the conducting wires are wrapped with insulating layers, the reinforcing weight piece and the plurality of thin conducting wires are arranged in the middle, and the thin conducting wires are tightly arranged around the reinforcing weight piece.

Preferably, the thin wire is internally provided with a conductor, and the conductor is wrapped with an insulating layer.

Preferably, the reinforcing weight is located at a position of a gap between the outer side of the lead and the outer cladding.

Preferably, the middle of the central polyester yarn rubber strip reinforcing core is polyester yarn, and a rubber layer is coated around the polyester yarn.

The polyester yarn has stronger tensile property, and the rubber layer also has stronger stretch-proofing ductility, and the stretch-proofing performance and the anti deformability that combine together can strengthen the cable can not cause the damage because of the extrusion of buckling to other component parts in the cable.

Therefore, the utility model discloses following beneficial effect has: (1) the combined mode can solidify the cable structure into a whole from inside to outside of the cable core, and ensures that the conductor, the insulating core, the counterweight reinforcing core and the sheath cannot be mutually moved in a serial way, so that the self weight of the cable can be improved, and the cable can be enhanced in anti-shaking performance; (2) the wind resistance of the cable for port hoisting machinery is greatly improved, the cable can still keep operation under strong wind, and the weighted cable can still keep the bending performance meeting the use requirement; (3) the adoption of the multi-layer composite coating layer can meet the requirements of moving and retracting of the cable, also obviously improves the anti-breaking capacity of the cable, is suitable for moving and bending occasions, and has excellent weather resistance.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. conductor, 2, insulating layer, 3, lead pearl chain center dacron silk reinforced core, 4, lead pearl chain, 5, the outer aramid fiber silk weaving layer of lead pearl chain, 6, center dacron silk rubber strip reinforced core, 6.1, dacron silk, 6.2, rubber layer, 7, high strength are around the band, 8, inner sheath, 9, tin-plated wire shielding layer, 10, oversheath, 11, surrounding layer, 12, wire, 13, reinforcing weight spare, 14, thin wire.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

In the embodiment shown in fig. 1, the wind-proof cable specially used for the harbor crane includes an outer covering layer 11, a conducting wire 12, a reinforcing weight 13 and a central polyester fiber rubber strip reinforcing core 6 are arranged in the outer covering layer 11, the conducting wire 12 is closely arranged around the central polyester fiber rubber strip reinforcing core 6, and the reinforcing weight 13 is wrapped around the conducting wire 12.

The outer cladding 11 comprises a high-strength wrapping tape 7, an inner sheath 8, a tinned wire shielding layer 9 and an outer sheath 10 which are arranged in sequence from inside to outside, and all the layers are tightly connected; a lead bead chain center polyester yarn reinforcing core 3 is arranged in the middle of the reinforcing weight piece 13, lead bead chain outer aramid yarn braided layers 5 are arranged on the surface layer of the reinforcing weight piece 13, four independent reinforcing weight pieces 13 are provided, and a lead bead chain 4 is filled between the lead bead chain center polyester yarn reinforcing core 3 and the lead bead chain outer aramid yarn braided layers 5 arranged on the surface layer; the insulation layer 2 is coated around the lead 12, the reinforcing weight balance members 13 and the thin leads 14 are arranged in the middle of the lead 12, the thin leads 14 are closely arranged around the reinforcing weight balance members 13, the number of the lead 12 is four, each lead 12 comprises one reinforcing weight balance member 13 and six thin leads 14, and the thin leads 14 surround the reinforcing weight balance members 13; the inside of the thin wire 14 is a conductor 1, and an insulating layer 2 is coated around the conductor 1; the reinforcing weight 13 is positioned at the position of a gap between the outer side of the lead 12 and the outer cladding 11; the middle of the central polyester yarn rubber strip reinforcing core 6 is polyester yarn 6.1, and a rubber layer 6.2 is coated around the polyester yarn 6.1.

Claims (7)

1. Special cable of preventing wind of port crane, characterized by is equipped with wire (12), reinforcing counterweight (13) and central dacron silk rubber strip and strengthens core (6) in surrounding layer (11) including surrounding layer (11), wire (12) closely arrange in around central dacron silk rubber strip strengthens core (6), reinforcing counterweight (13) cladding is around wire (12).

2. The special windproof cable for the port crane according to claim 1, wherein the outer covering (11) comprises a high-strength wrapping tape (7), an inner sheath (8), a tinned wire shielding layer (9) and an outer sheath (10) which are arranged in sequence from inside to outside.

3. The special windproof cable for the port crane according to claim 2, wherein a plurality of reinforcing weight members (13) are provided, a lead bead chain center polyester fiber reinforcing core (3) is arranged in the middle of each reinforcing weight member (13), a lead bead chain outer aramid fiber woven layer (5) is arranged on the surface layer of each reinforcing weight member (13), and a lead bead chain (4) is filled between the lead bead chain center polyester fiber reinforcing core (3) and the lead bead chain outer aramid fiber woven layer (5) arranged on the surface layer.

4. The special windproof cable for the port crane according to claim 1, wherein the number of the conducting wires (12) is several, the conducting wires (12) are coated with the insulating layer (2), the reinforcing weight (13) and the number of the thin conducting wires (14) are arranged in the middle, and the thin conducting wires (14) are closely arranged around the reinforcing weight (13).

5. The special windproof cable for the port crane according to claim 4, wherein the thin conducting wire (14) is internally provided with a conductor (1), and the conductor (1) is coated with an insulating layer (2).

6. The special wind-resistant cable for port cranes according to claim 5, characterized in that the reinforcing weight (13) is located at the position of the gap between the outside of the conductor (12) and the outer covering (11).

7. The special windproof cable for the port crane according to claim 1, wherein the polyester yarn (6.1) is arranged in the middle of the central polyester yarn rubber strip reinforcing core (6), and the rubber layer (6.2) is coated around the polyester yarn (6.1).

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