CN213459105U - Cable and power cable for elevator - Google Patents

Abstract

The utility model discloses a power cable for cable and elevator, including the conductor and wrap in the insulating boot in the periphery of conductor, the conductor includes a plurality of transposition monofilament wire together, and wherein, the external diameter of conductor is d1, and monofilament wire's transposition pitch is y, and 3d1 is less than or equal to y and is less than or equal to 8d 1. The monofilament wires are twisted for multiple times in the same direction and the twisting pitch is controlled within the range of 3-8 times of the outer diameter of the conductor, the flexibility of the conductor and the characteristic of easy bending are guaranteed, the outer layer of the conductor adopts special flexible 125 ℃ irradiation halogen-free low-smoke flame-retardant elastomer polyolefin as insulation, the material still keeps high flexibility after irradiation, the manufactured power cable for the elevator is used for wiring inside an elevator electrical control cabinet and is connected with an elevator power device, the bending radius is small, the current-carrying capacity is large, the service life is long, the halogen-free flame-retardant environment-friendly advantage is achieved, the distance between connected electronic devices or equipment can be greatly reduced, and the miniaturized design and compact arrangement of the equipment are facilitated.

Description

Cable and power cable for elevator

Technical Field

The utility model relates to the technical field of cables, especially, relate to a power cable for cable and elevator.

Background

The cable is a wire product for transmitting electric energy or signals, and is mainly divided into a power cable and a signal cable.

At present, with the increase of the modification and installation of elevators in old buildings and the gradual depletion of resources of urban construction land, the electrical control system of the elevator as an important part of the elevator should be developed towards miniaturization so as to adapt to installation and use in a narrow space.

Particularly, elevator electrical control system mainly includes elevator electrical control cabinet and elevator drive arrangement, elevator electrical control cabinet passes through power cable connection elevator drive arrangement to realize transmitting the electric energy for elevator drive arrangement, however, because current power cable exists the softness relatively poor performance when laying, be difficult for buckling the scheduling defect, lead to elevator electrical control cabinet volume great-and with the elevator drive arrangement between the installation distance great, hinder elevator electrical control system's miniaturized design, in order to conveniently realize elevator electrical control system's miniaturized design, need to improve current power cable urgently.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, an object of the present invention is to provide a cable having better flexibility and easier bending.

A second object of the utility model is to provide a power cable for elevator, its advantage that has the softness performance of preferred and buckle more easily for the installation distance between elevator electrical control cabinet volume and elevator electrical control cabinet and the elevator drive arrangement can accomplish littleer, thereby does benefit to elevator electrical control system's miniaturized design.

The purpose of the utility model is realized by adopting the following technical scheme:

the cable comprises a conductor and an insulating sleeve wrapped on the periphery of the conductor, wherein the conductor comprises a plurality of stranded monofilament wires, the outer diameter of the conductor is d1, the stranding pitch of the monofilament wires is y, and y is not less than 3d1 and not more than 8d 1.

Furthermore, the plurality of monofilament conductors comprise a central monofilament conductor and at least one monofilament conductor layer stranded around the central monofilament conductor or a plurality of stranded monofilament conductors after being stranded.

Furthermore, the monofilament wire layer is configured with more than two layers, and the twisting directions of the adjacent monofilament wire layers are the same.

Furthermore, the outer diameter of the monofilament lead is d2, and d2 is less than or equal to 0.15 mm.

Further, the monofilament lead is made of copper.

Furthermore, the insulating sleeve is made of soft 125 ℃ irradiation halogen-free low-smoke flame-retardant elastomer polyolefin.

Further, the cross-sectional shape of the cable is circular.

The second purpose of the utility model is realized by adopting the following technical scheme:

the power cable for the elevator comprises the cable.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the flexible performance and the characteristic of easy bending of the conductor are ensured by twisting the monofilament wires for multiple times at the same direction and small pitch (namely, the twisting pitch is controlled within the range of 3-8 times of the outer diameter of the conductor), and the insulating sleeve is made of flexible 125 ℃ irradiation halogen-free low-smoke flame-retardant elastomer polyolefin, so that the cable has the advantages of better flexible performance, easy bending, temperature resistance level of 125 ℃, excellent flame-retardant performance, long service life, low smoke and no toxicity during ignition and combustion and the like, the distance between connecting devices can be greatly reduced, the miniaturized design of the equipment is facilitated, and the cable is safer to people and environment.

Drawings

Fig. 1 is a schematic cross-sectional profile of a cable according to the present invention.

In the figure: 1. a monofilament wire; 2. and an insulating sleeve.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1, a cable according to a preferred embodiment of the present invention is shown, the cross section of the cable is circular, the cross section area of the cable is 0.5-95mm2, specifically, the cable includes a conductor and an insulating sheath 2 wrapping the periphery of the conductor, the conductor includes a plurality of twisted monofilament wires 1, the monofilament wires 1 are understood as a single wire made of a conductive material, the monofilament wires 1 are formed by a wire drawing process, wherein the outer diameter of the conductor is d1, the twisting pitch of the monofilament wires 1 is y, y is 3d1 or more and is 8d1 or less, that is, the twisting pitch of the monofilament wires 1 is 3-8 times the outer diameter of the conductor, and the twisting pitch is a straight distance that the monofilament wires 1 axially advance when the monofilament wires 1 rotate for one revolution.

The stranding pitch of the monofilament lead 1 is controlled within the range of 3-8 times of the outer diameter of the conductor, so that the flexibility and the characteristic of easy bending of the conductor after stranding are guaranteed.

Specifically, the monofilament conductor 1 is twisted as follows: the plurality of monofilament conductors 1 comprise a central monofilament conductor and at least one monofilament conductor layer stranded around the central monofilament conductor, namely the monofilament conductors 1 are stranded in a concentric stranding mode to form a conductor or the monofilament conductors are stranded in a small-pitch beam mode and then are stranded again.

More specifically, when the monofilament wire layer is configured with more than two layers, the twisting direction of the adjacent monofilament wire layers is the same, so that the flexibility of the conductor is better, the conductor is easier to bend, the flexibility of the cable is further improved, and meanwhile, the consistency of the conductor is ensured, so that the diameter of the twisted conductor is effectively reduced.

As a preferred embodiment, the outer diameter of the monofilament conductor 1 is d2, d2 is less than or equal to 0.15mm, that is, the monofilament conductor 1 is the monofilament conductor 1 with a smaller or thinner outer diameter, so that the flexibility of the monofilament conductor 1 is better, the flexibility of the cable is further improved, the cable is easier to bend, and meanwhile, the twisting pitch of the monofilament conductor 1 can be controlled within the range of 3-8 times of the outer diameter of the conductor more easily, so that the flexibility of the cable is further improved.

As a preferred embodiment, the insulating sleeve 2 is made of soft 125 ℃ irradiation halogen-free low-smoke flame-retardant elastomer polyolefin, so that the insulating sleeve 2 has the advantages of better flexibility, easier bending, smaller bending radius (the bending radius is less than 4 times of the diameter of the cable), temperature resistance level of 125 ℃, excellent flame-retardant property, long service life, low smoke and no toxicity when in fire. It can be understood that the soft 125 ℃ irradiation halogen-free low-smoke flame-retardant elastomer polyolefin is specifically an environment-friendly material which has a temperature resistance level of 125 ℃, contains no halogen (fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At)), generates less smoke during combustion, does not contain toxic gas, and has self-extinguishing capability when encountering fire.

The utility model provides a cable possesses following advantage:

1. the flexibility is better, and the bending is easy;

2. the bending radius is smaller when the cable is bent (the diameter of the cable is less than 4 times);

3. the service life is longer, the service life of the common cable is 30 years, the service life of the cable of the utility model is 50-70 years, and the cable is low-smoke and nontoxic when in fire and combustion, has certain self-extinguishing capability and is environment-friendly;

4. under the same sectional area, because of its temperature resistant grade is higher, can bear more heavy current, has certain recovery ability after instantaneous overload leads to insulating cover 2 to warp or destroy because of high temperature, can ensure that the cable can normal use in a period of time.

The concrete content of the utility model is specifically described below by taking the preparation of the power cable for the elevator as an example:

the power cable with the cross section area of 4mm2 for the elevator needs to be produced, 226 ultrathin copper wires with the thickness of 0.15mm are prepared, the 226 copper wires are stranded into a conductor with the thickness of 4mm2 in a concentric, repeated, small-pitch and layered stranding mode by using a stranding device with back twist to increase the flexibility of the conductor, the outer layer of the conductor is insulated by adopting a soft 125-DEG C irradiation halogen-free low-smoke flame-retardant elastomer polyolefin material (the material has high strength and high temperature resistance grade after irradiation, and simultaneously keeps higher flexibility), the material is extruded and molded by a plastic extruder, and the molded cable is irradiated and processed by using irradiation equipment. The power cable for the elevator is manufactured by the method. When being used for elevator electrical control cabinet internal connection line and elevator electrical control cabinet and elevator power device to be connected, the radius of can buckling is little, and the current-carrying capacity is big, long service life, and there is not steamed fire-retardant environmental protection, can reduce the distance between elevator electrical control cabinet volume and the elevator control cabinet and the elevator power device greatly, can effectively reduce the volume of equipment, can bear higher ambient temperature again.

To sum up, the utility model provides a cable has solved the defect that present power cable for elevator exists to cable self super flexibility, high temperature resistant grade, long-life, the clear excellent characteristics of environmental protection reach the space volume that reduces elevator electrical control cabinet and elevator power device, make it to arrange in narrow and small, abominable space such as high temperature, more economy environmental protection.

It can be understood that the cable provided by the utility model can be applied to the internal connecting wire of the electric control cabinet, the electric control cabinet is composed of a plurality of electric control elements, the cable can be used for the internal wiring of the electric control cabinet and provides power transmission for the electric control elements, the super-flexible cable can reduce the distance between the components to achieve the miniaturization design of the electric control cabinet; the utility model provides a cable specifically can also be applied to connecting wire between control regulator cubicle and the power drive device and the connecting wire between equipment and the equipment, for different equipment provide power transmission, super gentle cable can reduce the space between the equipment and put the distance, reaches the miniaturized design of elevator computer lab.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (8)

1. The cable is characterized by comprising a conductor and an insulating sleeve wrapped on the periphery of the conductor, wherein the conductor comprises a plurality of stranded monofilament conductors, the outer diameter of the conductor is d1, the stranding pitch of the monofilament conductors is y, and y is not less than 3d1 and not more than 8d 1.

2. A cable according to claim 1, wherein the plurality of monofilament conductors comprises a central monofilament conductor and at least one layer of monofilament conductors twisted about the central monofilament conductor, or a plurality of monofilament conductors twisted together after bunching.

3. A cable according to claim 2, wherein said monofilament conductor layer is provided with more than two layers, and the direction of twisting of adjacent monofilament conductor layers is the same.

4. The cable of claim 1 wherein the monofilament wire has an outer diameter d2, d2 mm 0.15mm or less.

5. The cable of claim 1 wherein the monofilament conductor is copper.

6. The cable of claim 1 wherein the insulating jacket material is a soft 125 ℃ irradiation halogen-free low smoke flame retardant elastomeric polyolefin.

7. The cable of claim 1, wherein the cable has a circular cross-sectional shape.

8. Power cable for elevators, characterized in that it comprises a cable according to any one of claims 1 to 7.

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