CN208368201U - A kind of traction machine power cable - Google Patents

Abstract

The utility model relates to a kind of traction machine power cables, it include three insulated wire cores in cable core, insulated wire cores include tin-coated copper tow, tin-coated copper tow periphery is coated with insulating paper and crosslinked polyetylene insulated layer, the center of cable core is equipped with moulding inner core, moulding inner core is in positive triangle star, the big concave arc of inner core is respectively equipped between three arms, the small concave arc of inner core is respectively equipped at the top of three arms of moulding inner core, three insulated wire cores are symmetrically embedded in three big concave arcs of inner core, are embedded with PVC hollow tube in the small concave arc of inner core respectively；PVC hollow tube and insulated wire cores periphery are surrounded with armor, armor periphery is coated with low smoke and zero halogen crosslinked polyethylene oversheath, oversheath outer wall is equipped with multiple tracks semi-circular recesses and coils along the hand of spiral, the screw pitch of helix is the four to eight times of low smoke and zero halogen crosslinked polyethylene oversheath outer diameter, and the outer wall of low smoke and zero halogen crosslinked polyethylene oversheath is uniformly coated with length mark every one meter.Cable heat dissipation is good, big in consumption copper same case downloading flow.

Description

A kind of traction machine power cable

Technical field

The utility model relates to a kind of power cable, in particular to a kind of traction machine power cable belongs to industrial cable Technical field.

Background technique

It include three insulated wire cores in traditional traction machine power cable, every insulated wire cores respectively include tinned copper wire Beam, the periphery of tin-coated copper tow have been respectively coated by insulating layer, and three insulated wire cores are twisted into cable core, and cable core periphery is surrounded with armouring The periphery of layer, armor coats oversheath.Traction machine is differed greatly with the behaviour in service of power cable and general industry cable, main If elevator encounters every layer of calling, it is intended to be braked, then restarts, elevator round trip between bottom and top layer is intended to The process braked for several times, started.

It is well known that the electric current when starting current of motor is than operating normally is much bigger, the big cable of current-carrying capacity is easy Fever, therefore the requirement to power cable is also higher, is still more continuously activated the impact of electric current, generally requires to adopt With the bigger cable of conductor cross sectional area, the increase of purchase cost is caused.

Many cables need to be cut into before laying the length of needs in advance, then both ends pressing assembly nose, because cable exists It is all coiled on cable drum rack when transporting construction site in coiled state, the length of cable can not be measured.It usually requires One piece of spacious ground of comparison is found, the cable of coiling is discharged along straight line untwisting, is cut after then measuring the length of cable It cuts.Since cable is released on the ground from coiled state, cable is fixed on linear state along Cheng Wufa, in coiling stress Under effect, cable is inevitably in bending state, it is difficult to which bending is measured accurate.If cable cutting retrodeviate it is short, in cable Just will appear end when laying in place can not connect with corresponding pile crown, in many cases, will lead to scrapping for whole cable.For This case is avoided the occurrence of, construction personnel often reserves the surplus relatively grown up, cable end piece meeting when purchasing or cutting cable There is longer redundancy, have to be coiled in cable trough, not only causes the waste of material, live is in disorder, and causes Cable density in cable trough is excessively high, and heat dissipation is deteriorated.

Utility model content

The purpose of this utility model is that overcoming problems of the prior art, a kind of traction machine electric power electricity is provided Cable, heat dissipation is good, bigger in the identical situation downloading flow of tin-coated copper tow consumption.

It include three insulated wires in cable core in order to achieve the above object, a kind of traction machine power cable of the utility model Core, the insulated wire cores include tin-coated copper tow, and tin-coated copper tow periphery is coated with insulating paper, the periphery cladding of the insulating paper Crosslinking polyethylene layer, the center of the cable core are equipped with moulding inner core, and the moulding inner core is in positive triangle star, the modeling The big concave arc of inner core is respectively equipped between three arms of shape inner core, it is small recessed to be respectively equipped with inner core at the top of three arms of the moulding inner core Arc, three insulated wire cores are symmetrically embedded in three big concave arcs of inner core of moulding inner core, in the small concave arc of inner core of the moulding inner core It is embedded with PVC hollow tube respectively；The radius of the big concave arc of inner core is equal with the radius of the insulated wire cores, and the inner core is small recessed The radius of arc is equal with the radius of the PVC hollow tube, and three PVC hollow tubes and three insulated wire cores have jointly external Circle, and the periphery of three PVC hollow tubes and three insulated wire cores is surrounded with armor, the periphery of the armor is coated with low cigarette Halogen crosslinked polyethylene oversheath, the outer wall of the low smoke and zero halogen crosslinked polyethylene oversheath are uniformly provided with six to ten roads semicircle Groove, each semi-circular recesses are uniformly coiled in the outer wall of the low smoke and zero halogen crosslinked polyethylene oversheath, institute along hand of helix The screw pitch for stating helix is the four to eight times of low smoke and zero halogen crosslinked polyethylene oversheath outer diameter, the low smoke and zero halogen crosslinked polyethylene The outer wall of oversheath is uniformly coated with length mark every one meter.

Compared with the existing technology, the utility model achieves following the utility model has the advantages that insulating paper plays guarantor to the copper wire of periphery Shield effect, is removed convenient for tin-coated copper tow and crosslinked polyetylene insulated layer, can also to avoid periphery copper wire by electrician's knife cut wound； Crosslinked polyetylene insulated layer it is heat-resist, smog is small when kindling, improves the overload capacity of conductor.The inner core of moulding inner core is big Concave arc can supports insulative core well, and three insulated wire cores are reliably spaced apart, it is ensured that insulated wire will not occur The situation that core mutually reclines avoids overheating；PVC hollow tube is located between adjacent two insulated wire cores, can will it is adjacent absolutely The heat derives of edge core, the small concave arc of inner core reliably position PVC hollow tube, three PVC hollow tubes and three insulated wire cores Make the whole very rounding of cable core with common circumscribed circle；Because the main part of traction machine power cable is located at building Elevator in, using the draft effect of hoistway, flowed up convenient for hot-air along PVC hollow tube, further increase heat dissipation effect Fruit.Armor can prevent gnawing for muroid from biting, and low smoke and zero halogen crosslinked polyethylene oversheath is nontoxic, and anti-flammability, environmental stress resistance are opened Fragility can be good, and heatproof is up to 90 DEG C or more.It is recessed that the outer wall of low smoke and zero halogen crosslinked polyethylene oversheath is uniformly provided with multiple tracks semicircle On the one hand slot increases the surface area of low smoke and zero halogen crosslinked polyethylene oversheath, improves heat dissipation performance；On the other hand semicircle Groove does not extend not instead of in the axial direction, coils along hand of helix, when cable is placed in ground, adherent installation or two electricity When cable is bonded, semi-circular recesses can guarantee the air circulation of contact position, avoid being bonded that close section is too long to lead to local mistake Heat.When construction, only the accurate of cable need to may know that according to the length mark on low smoke and zero halogen crosslinked polyethylene oversheath outer wall Length not will cause the excessively interminable waste of cable, and cable redundancy bring is also avoided to endanger.

As the improvement of the utility model, the insulating paper with a thickness of 0.12~0.15mm.

The armor is galvanized steel strip armor as a further improvement of the utility model,.Galvanized steel strip armor It is less likely to occur to corrode, long service life.

As a further improvement of the utility model, the crosslinked polyetylene insulated layer with a thickness of 1~1.5mm, it is described Low smoke and zero halogen crosslinked polyethylene oversheath with a thickness of 2.5~3mm.

Detailed description of the invention

Fig. 1 is the schematic cross-section of the utility model traction machine power cable.

Fig. 2 is the enlarged drawing of moulding inner core in Fig. 1.

Fig. 3 is the outline drawing of the utility model traction machine power cable.

In figure: 1. moulding inner cores；The big concave arc of 1a. inner core；The small concave arc of 1b. inner core；2. tin-coated copper tow；3. insulating paper；4. Crosslinked polyetylene insulated layer；5. PVC hollow tube；6. armor；7. low smoke and zero halogen crosslinked polyethylene oversheath；7a. semicircle is recessed Slot；8. length mark.

Specific embodiment

As shown in Figure 1 to Figure 3, the traction machine power cable of the utility model includes three insulated wire cores in cable core, absolutely Edge core includes tin-coated copper tow 2, and 2 periphery of tin-coated copper tow is coated with insulating paper 3, insulating paper 3 with a thickness of 0.12~ 0.15mm plays a protective role to the copper wire of periphery, removes convenient for tin-coated copper tow 2 and crosslinked polyetylene insulated layer 4, can also be with Avoid the copper wire of periphery by electrician's knife cut wound.

The periphery of insulating paper 3 is coated with crosslinked polyetylene insulated layer 4, crosslinked polyetylene insulated layer 4 with a thickness of 1~ 1.5mm, heat-resist, smog is small when kindling, improves the overload capacity of conductor.

The center of cable core is equipped with moulding inner core 1, and moulding inner core 1 is in positive triangle star, divides between three arms of moulding inner core 1 Not She You the big concave arc 1a of inner core, be respectively equipped with the small concave arc 1b of inner core at the top of three arms of moulding inner core 1, three insulated wire cores are symmetrical It is hollow embedded with PVC respectively in the small concave arc 1b of the inner core of moulding inner core 1 in the big concave arc 1a of three inner cores of moulding inner core 1 Pipe 5；The radius of the big concave arc 1a of inner core is equal with the radius of insulated wire cores, the radius of the small concave arc 1b of inner core and the half of PVC hollow tube 5 Diameter is equal, and three PVC hollow tubes 5 and three insulated wire cores have common circumscribed circle.

The big concave arc 1a of the inner core of moulding inner core 1 can supports insulative core well, and it is three insulated wire cores are reliable Ground is spaced apart, it is ensured that the situation that insulated wire cores mutually recline will not occur, avoid overheating；PVC hollow tube 5 is located at adjacent two Between root insulated wire cores, the heat derives of adjacent insulated wire cores, the small concave arc 1b of inner core reliably can be determined PVC hollow tube 5 There is common circumscribed circle to make the whole very rounding of cable core for position, three PVC hollow tubes 5 and three insulated wire cores；Because of traction The main part of machine power cable is located in the elevator of building, using the draft effect of hoistway, convenient for hot-air along PVC Hollow pipe 5 flows up, and further increases heat dissipation effect.

The periphery of three PVC hollow tubes 5 and three insulated wire cores is surrounded with armor 6, and armor 6 preferably uses galvanized steel With armor to prevent gnawing for muroid from biting.The periphery of armor 6 is coated with low smoke and zero halogen crosslinked polyethylene oversheath 7, low cigarette without Halogen crosslinked polyethylene oversheath 7 with a thickness of 2.5~3mm.Low smoke and zero halogen crosslinked polyethylene oversheath 7 is nontoxic, anti-flammability, resistance to ring Border stress cracking performance is good, and heatproof is up to 90 DEG C or more.

The outer wall of low smoke and zero halogen crosslinked polyethylene oversheath 7 is uniformly provided with six to ten road semi-circular recesses 7a, each semicircle Groove 7a is uniformly coiled in the outer wall of low smoke and zero halogen crosslinked polyethylene oversheath 7 along hand of helix, and the screw pitch of helix is low For the four of 7 outer diameter of cigarette Halogen crosslinked polyethylene oversheath to eight times, on the one hand semi-circular recesses 7a increases low smoke and zero halogen crosslinking poly- The surface area of ethylene oversheath 7, improves heat dissipation performance；Another aspect semi-circular recesses 7a be not extend in the axial direction, and It is to be coiled along hand of helix, when cable, which is placed in ground, adherent installation or two cables, to be bonded, semi-circular recesses 7a The air circulation that can guarantee contact position, avoids being bonded that close section is too long to lead to hot-spot.

The outer wall of low smoke and zero halogen crosslinked polyethylene oversheath 7 is uniformly coated with length mark 8 every one meter, when construction, only It need to be the exact length that may know that cable, Bu Huizao according to the length mark 8 on 7 outer wall of low smoke and zero halogen crosslinked polyethylene oversheath At the excessively interminable waste of cable, cable redundancy bring is also avoided to endanger.

The foregoing is merely the preferable possible embodiments of the utility model, patent that is non-therefore limiting to the utility model Protection scope.In addition to the implementation, the utility model can also have other embodiments.It is all to use equivalent replacement or equivalent change The technical solution to be formed is changed, is all fallen in the protection scope of the requires of the utility model.Technology of the utility model without description is special Sign can realize that details are not described herein by or using the prior art.

Claims (4)

1. It include three insulated wire cores in cable core 1. a kind of traction machine power cable, it is characterised in that: the insulated wire cores include Tin-coated copper tow, tin-coated copper tow periphery are coated with insulating paper, and the periphery of the insulating paper is coated with crosslinked polyetylene insulated layer, The center of the cable core is equipped with moulding inner core, and the moulding inner core is in positive triangle star, between three arms of the moulding inner core It is respectively equipped with the big concave arc of inner core, is respectively equipped with the small concave arc of inner core, three insulated wire cores pair at the top of three arms of the moulding inner core Claim in three big concave arcs of inner core of moulding inner core, it is hollow embedded with PVC respectively in the small concave arc of inner core of the moulding inner core Pipe；The radius of the big concave arc of inner core is equal with the radius of the insulated wire cores, the radius and the PVC of the small concave arc of inner core The radius of hollow pipe is equal, and three PVC hollow tubes and three insulated wire cores have common circumscribed circle, and three PVC hollow tubes It is surrounded with armor with the periphery of three insulated wire cores, the periphery of the armor is coated with outside low smoke and zero halogen crosslinked polyethylene and protects Set, the outer wall of the low smoke and zero halogen crosslinked polyethylene oversheath are uniformly provided with six to ten road semi-circular recesses, each semi-circular recesses The outer wall of the low smoke and zero halogen crosslinked polyethylene oversheath is uniformly coiled in along hand of helix, the screw pitch of the helix is low The four of cigarette Halogen crosslinked polyethylene oversheath outer diameter are to eight times, and the outer wall of the low smoke and zero halogen crosslinked polyethylene oversheath is every one Rice is uniformly coated with length mark.
2. 2. traction machine power cable according to claim 1, it is characterised in that: the insulating paper with a thickness of 0.12~ 0.15mm。
3. 3. traction machine power cable according to claim 1, it is characterised in that: the armor is galvanized steel strip armouring Layer.
4. 4. traction machine power cable according to claim 1 or 2 or 3, it is characterised in that: described crosslinked polyetylene insulated Layer with a thickness of 1~1.5mm, the low smoke and zero halogen crosslinked polyethylene oversheath with a thickness of 2.5~3mm.