CN214673077U

CN214673077U - Environment-friendly hoisting pre-branch cable

Info

Publication number: CN214673077U
Application number: CN202120296839.XU
Authority: CN
Inventors: 邹瑞军; 生长飞; 张润浩; 郭林鑫; 张晴; 张琛楠; 李金堂
Original assignee: Zhejiang Wanma Co Ltd
Current assignee: Zhejiang Wanma Co Ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-11-09
Anticipated expiration: 2031-02-02

Abstract

The utility model discloses a branch cable is in advance hoisted in environmental protection, including leader cable and branch cable, the leader cable includes a plurality of bearing ropes, a plurality of cable conductor and is used for wrapping up cable conductor's stranding band, and bearing rope evenly distributed is between cable conductor, and every cable conductor all includes first cable conductor, second cable conductor and third cable conductor, and every first cable conductor all is connected with the second cable conductor that corresponds and the third cable conductor that corresponds respectively through connecting device. First cable conductor passes through connecting device and second cable conductor and third cable conductor and is connected, and connecting device divides into the second cable conductor in the main cable and the third cable conductor who is as branch cable promptly with first cable conductor, and connecting device is the connection piece of rectangular shape, connection piece C type, and when branch cable atress was too big like this, can slowly flare-out with crooked C type connection piece earlier, played the effect of buffering, just can prevent effectively that branch cable from being torn apart.

Description

Environment-friendly hoisting pre-branch cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to branch cable is in advance hoisted in environmental protection.

Background

The pre-branch cable is a substitute product for supplying power to a bus duct in a high-rise building, has the advantages of reliable power supply, convenient installation, good waterproofness, small occupied building area, low failure rate, low price, maintenance-free property and the like, and is suitable for a power distribution line with the AC rated voltage of 0.6/1 kv. The vertical power supply system is widely applied to vertical power supply in high and medium-rise buildings, residential buildings, commercial buildings, hotels and hospital electrical shafts, and is also applicable to power supply systems of tunnels, airports, bridges, highways and the like. The pre-branching cable used at present mostly uses copper as a conductor material, although the copper is used as a conductor, the electrical conductivity and the mechanical property of the pre-branching cable are superior to those of an aluminum alloy conductor, but the aluminum alloy is much cheaper than the copper, the specific gravity is light, and under the condition of the same current-carrying capacity, although the sectional area is increased, the weight is reduced by 50%, and the cost is reduced by 70-80%. As the hoisting pre-branch cable, the light weight can effectively improve the construction convenience. The existing pre-branch cable has the condition that the stress of a hoisting device acts on the outer protection of the cable, the protective layer is easy to crack, and the branch cable is broken due to overlarge stress of the branch cable.

If chinese patent CN210778002U, open 2020, 6 months and 16 days, an environmental protection type long-life aluminium sheath multipurpose is branch fireproof cable in advance, including insulating protective sheath, insulating protective sheath's inner chamber is provided with the leader cable, the left side fixedly connected with branch cable of leader cable, the outside to insulating protective sheath is all run through to the top and the bottom of leader cable, the one end that branch cable kept away from leader cable runs through to insulating protective sheath's bottom, leader cable and branch cable all include first protective sheath, the inner chamber fixedly connected with insulating layer of first protective sheath. The utility model discloses a cooperation that sets up insulating protective sheath, second protective sheath, aluminum sheath, third protective sheath, leader cable, branch cable, first protective sheath, insulating layer, fire-retardant layer, filling layer, insulating cover and cable conductor is used, has solved the current poor and short problem of life of branch cable fire prevention effect in advance, and this multipurpose branch cable in advance possesses the effectual and long service life's of fire prevention advantage. The protection outer layer is only considered, and the problem that the branch cable is easy to break when the branch cable is pulled is not considered.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the existing pre-branch cable has the technical problem that the branch cable is easy to break due to the fact that the branch cable is stressed too much. The environment-friendly hoisting pre-branch cable can prevent the branch cable from being broken due to overlarge stress of the branch cable.

In order to solve the technical problem, the utility model discloses the technical scheme who takes does: the utility model provides a branch cable is in advance hoisted in environmental protection, includes leader cable and branch cable, the leader cable includes a plurality of bearing ropes, a plurality of cable conductor and is used for the parcel cable band of cable conductor, bearing rope evenly distributed is in between the cable conductor, the both ends of leader cable are equipped with first connector and second connector respectively, branch cable's one end is equipped with the third connector, every cable conductor all including be used for with first cable conductor of first connector connection, be used for with second connector connection's second cable conductor and be used for with third connector connection's third cable conductor, every first cable conductor all through connecting device respectively with correspond second cable conductor and corresponding the third cable conductor is connected. The utility model provides a branch cable is in advance hoisted in environmental protection, includes main cable and branch cable, is equipped with a plurality of bearing ropes in the main cable, and the bearing rope can be wire rope, and wire rope leaves the surplus length at the cable end, can directly make cable hanger, uses wire rope to do cable hanger, does not need to join in marriage alone hoist and mount screen panel, and the structure of integral type makes branch cable in advance use safer. The two ends of the main cable are respectively provided with a first connecting port and a second connecting port, one end of the branch cable is provided with a third connecting port, corresponding cable conductors are also divided into a first cable conductor, a second cable conductor and a third cable conductor, the first cable conductor is connected with the second cable conductor and the third cable conductor through a connecting device, namely the first cable conductor is divided into the second cable conductor in the main cable and the third cable conductor serving as the branch cable by the connecting device, the connecting device is a strip-shaped connecting piece, a copper sheet can be selected for the connecting piece, the copper sheet is bent to be in a C shape, so that when the branch cable is excessively stressed, the bent C-shaped copper sheet can be slowly straightened firstly, the buffering effect is achieved, and the branch cable can be effectively prevented from being pulled apart.

Preferably, each connecting device comprises a connecting piece, one end of each connecting piece is connected with the corresponding first cable conductor, the other end of each connecting piece is connected with the corresponding second cable conductor and the corresponding third cable conductor, and each connecting piece is C-shaped. The connection piece can be the copper sheet, and the copper sheet bending is the C type, and when branch cable atress was too big, can slowly flare-out with crooked C type copper sheet earlier, played the effect of buffering, fracture when can effectively preventing branch cable from being dragged. Meanwhile, the C-shaped copper sheet adopts a tin-plated copper structure, so that the problem of connection transition between the connecting sheet and the cable conductor is solved.

Preferably, each connecting piece is provided with a first insulating layer. Every connecting piece all is equipped with first insulating layer on, and insulating layer can be insulating varnish or rubber insulation layer on the layer, and the copper sheet that the cooperation was regarded as the connecting piece can have higher ductility, is difficult for being torn apart, can improve the corrosion resistance of connecting piece, prevents the connecting piece electric leakage, and the connecting piece can play radiating effect simultaneously.

Preferably, the connecting means on each cable conductor is located on a side of the main cable adjacent to the third connecting port. The main cable is formed by mutually twisting and encircling a plurality of bearing ropes and cable conductors, the connecting device on each cable conductor is positioned on one side of the main cable close to the third connector, namely when the third connector is positioned above the main cable, the connecting device on each cable conductor on the main cable only appears at the position of the cable conductor when encircling the main cable, and the cable conductors are different in the positions of the upper part of the main cable because the twisting and encircling occur, so that the connecting devices can sequentially appear at different length positions on the main cable, the condition that all the connecting devices are accumulated at one position is prevented, and the problem that the line connection occurs due to mutual contact friction of the connecting devices is prevented.

Preferably, a second insulating layer is arranged outside the bearing rope. Wire rope can be chooseed for use to the bearing rope, because the steel wire atress is great, easily cause the damage to the conductor insulation, the second insulating layer that adds outside wire rope can be the polyethylene insulating layer, play insulating and buffering's effect, prevent that wire rope from cutting the insulating layer of bad cable conductor, simultaneously because wire rope is thinner, for reducing the steel wire and pulling the power slip inside the cable, increase its external diameter through the second insulating layer, increase coefficient of friction makes it more stable inside the cable.

Preferably, a mineral paper rope filling layer is arranged between the cable conductor and the cabling wrapping tape. The mineral paper rope has higher tensile strength and high temperature resistance, the flame retardant property of the cable is enhanced while the cable conductor is protected, the bearing rope can be prevented from sliding relative to the cable conductor, and the stability of the main cable is enhanced.

Preferably, the cabling tape is a low-smoke halogen-free flame-retardant tape; and a protective layer is arranged outside the cabling wrapping belt. The low-smoke halogen-free flame-retardant polyolefin sheath, the cabling wrapping belt and the protective layer are made of flame-retardant environment-friendly materials such as low-smoke halogen-free flame-retardant polyolefin, and are used for preventing the cable from burning and even causing fire due to insulation thermal breakdown. The protective layer is arranged outside the cabling belting, the waterproof and anti-leakage effects can be achieved, the cable can be protected, and the cabling belting and the protective layer can be wrapped at the gathering position of the branch cable.

Preferably, the edge of each connecting sheet is provided with a round angle. The edges of the connecting pieces are all set to be round corners so as to prevent edges of the connecting pieces from scratching the insulating layers of the cable conductors, and round or spherical blocking parts can be arranged at the edges of the connecting pieces.

Preferably, the cable conductor is an aluminum alloy stranded conductor. The aluminum alloy stranded conductor is light in weight and low in cost, can reduce the burden of the bearing rope, and simultaneously reduces the weight of the branch cable, and can effectively reduce the risk that the branch cable is pulled apart.

Preferably, a third insulating layer is arranged outside each cable conductor. The outer part of each cable conductor is provided with an insulating layer, and the third insulating layer adopts crosslinked polyethylene as an insulating material, so that the heat resistance of the cable conductor can be enhanced while insulation is realized.

The utility model discloses a substantive effect is: the utility model comprises a main cable and branch cables, wherein the two ends of the main cable are respectively provided with a first connecting port and a second connecting port, one end of the branch cable is provided with a third connecting port, the corresponding cable conductors are also divided into a first cable conductor, a second cable conductor and a third cable conductor, the first cable conductor is connected with the second cable conductor and the third cable conductor through a connecting device, namely the first cable conductor is divided into the second cable conductor in the main cable and the third cable conductor as the branch cable by the connecting device, the connecting device is a strip-shaped connecting sheet, the connecting sheet can be a copper sheet, the bending of the copper sheet is C-shaped, therefore, when the branch cable is stressed too much, the bent C-shaped copper sheet is firstly slowly straightened, the buffering effect is achieved, the branch cable can be effectively prevented from being pulled apart, the connecting device on each cable conductor is positioned at one side of the main cable close to the third connecting port, the connecting devices can be sequentially arranged at different positions on the main cable, the situation that all the connecting devices are stacked at one position is prevented, and the problem of line connection caused by mutual contact friction of the connecting devices is prevented.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

fig. 2 is a schematic structural diagram of the main cable in this embodiment.

Wherein: 1. bearing rope, 2, second insulating layer, 3, cable conductor, 4, third insulating layer, 5, mineral paper rope filling layer, 6, cabling band, 7, inoxidizing coating, 8, connecting device, 9, first insulating layer, 10, first interface, 11, second connector, 12, third connector, 13, first cable conductor, 14, second cable conductor, 15, third cable conductor.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

An environmental protection hoist and mount branch cable in advance, as shown in figure 1, includes leader cable and branch cable, and the leader cable includes a plurality of bearing rope 1, a plurality of cable conductor 3 and is used for wrapping up cabling band 6 of cable conductor 3, and bearing rope 1 evenly distributed is between cable conductor 3, as shown in figure 2, all is equipped with second insulating layer 2 outside every bearing rope 1. Wire rope can be chooseed for use to bearing rope 1, because the steel wire atress is great, easily cause the damage to conductor insulation, second insulating layer 2 that adds outside wire rope can be the polyethylene insulating layer, play insulating and buffering's effect, prevent that wire rope from cutting bad cable conductor 3's insulating layer, simultaneously because wire rope is thinner, for reducing the steel wire and drawing the power slip inside the cable, increase its external diameter through second insulating layer 2, increase coefficient of friction makes it more stable inside the cable.

The two ends of the main cable are respectively provided with a first connecting port 10 and a second connecting port 11, one end of the branch cable is provided with a third connecting port 12, each cable conductor 3 comprises a first cable conductor 13 connected with the first connecting port 10, a second cable conductor 14 connected with the second connecting port 11 and a third cable conductor 15 connected with the third connecting port 12, and each first cable conductor 13 is respectively connected with the corresponding second cable conductor 14 and the corresponding third cable conductor 15 through a connecting device 8. The connection means 8 on each cable conductor 3 are located on the side of the main cable near the third connection port 12. The main cable is made by mutually twisting and encircling a plurality of bearing ropes 1 and cable conductors 3, the connecting device 8 on each cable conductor 3 is positioned on one side of the main cable close to the third connecting port 12, namely when the third connecting port 12 is positioned above the main cable, the connecting device 8 on each cable conductor 3 on the main cable only appears at the position of the cable conductor 3 when encircling the main cable, so that the cable conductors 3 are different in position of the upper part of the main cable because the twisting and encircling occur, the connecting devices 8 can be sequentially arranged at different length positions on the main cable, the situation that all the connecting devices 8 are piled up at one position is prevented, and the problem that the line connection occurs due to mutual contact friction of the connecting devices 8 is prevented. Each connecting device 8 comprises a connecting piece, one end of each connecting piece is connected with the corresponding first cable conductor 13, the other end of each connecting piece is respectively connected with the corresponding second cable conductor 14 and the corresponding third cable conductor 15, and each connecting piece is C-shaped. The connection piece can be the copper sheet, and the copper sheet bending is the C type, and when branch cable atress was too big, can slowly flare-out with crooked C type copper sheet earlier, played the effect of buffering, fracture when can effectively preventing branch cable from being dragged. Meanwhile, the C-shaped copper sheet adopts a tin-plated copper structure, so that the problem of connection transition between the connecting sheet and the cable conductor 3 is solved. Each connection pad is provided with a first insulating layer 9. Every connecting piece all is equipped with first insulating layer 9 on, and insulating layer can be insulating varnish or rubber insulation layer upon layer, and the copper sheet that the cooperation was regarded as the connecting piece can have higher ductility, is difficult for being torn apart, can improve the corrosion resistance of connecting piece, prevents the connecting piece electric leakage, and the connecting piece can play radiating effect simultaneously. The edge of each connecting sheet is provided with a round angle. The edges of the connecting pieces are all set to be round corners so as to prevent edges of the connecting pieces from scratching the insulating layers of the cable conductors 3, and round or spherical blocking parts can be arranged at the edges of the connecting pieces.

The cable conductor 3 is an aluminum alloy stranded conductor. The aluminum alloy stranded conductor is light in weight and low in cost, can reduce the burden of the bearing rope 1, reduces the weight of the branch cable, and can effectively reduce the risk of the branch cable being pulled apart. And a third insulating layer 4 is arranged outside each cable conductor 3. Each cable conductor 3 is externally provided with an insulating layer, and the third insulating layer 4 adopts cross-linked polyethylene as an insulating material, so that the heat resistance of the cable conductor 3 can be enhanced while insulation is realized. A mineral paper rope filling layer 5 is arranged between the cable conductor 3 and the cabling wrapping belt 6. The mineral paper rope has higher tensile strength and high temperature resistance, the flame retardant property of the cable is enhanced while the cable conductor 3 is protected, the bearing rope 1 can be prevented from sliding relative to the cable conductor 3, and the stability of the main cable is enhanced. The cabling belt 6 is a low-smoke halogen-free flame-retardant belt; a protective layer 7 is arranged outside the cabling wrapping belt 6. The low-smoke halogen-free flame-retardant polyolefin sheath, the cabling wrapping belt 6 and the protective layer 7 are made of flame-retardant environment-friendly materials such as low-smoke halogen-free flame-retardant polyolefin, and are used for preventing the situation that insulation thermal breakdown causes cable combustion and even fires. The protective layer 7 is arranged outside the cabling belting 6, can play a role in preventing water and electricity leakage and is used for protecting cables, and the cabling belting 6 and the protective layer 7 can be wrapped at the gathering position of the branch cables.

The embodiment comprises a main cable and branch cables, wherein a plurality of bearing ropes 1 are arranged in the main cable, the bearing ropes 1 can be steel wire ropes, the steel wire ropes leave extra length at the ends of the cables, cable hanging heads can be directly manufactured, the steel wire ropes are used as the cable hanging heads, independent distribution of a hoisting mesh enclosure is not needed, and the integral structure enables the branch cables to be used safely. The two ends of the main cable are respectively provided with a first connecting port 10 and a second connecting port 11, one end of the branch cable is provided with a third connecting port 12, the corresponding cable conductor 3 is also divided into a first cable conductor 13, a second cable conductor 14 and a third cable conductor 15, the first cable conductor 13 is connected with the second cable conductor 14 and the third cable conductor 15 through a connecting device 8, namely the first cable conductor 13 is divided into the second cable conductor 14 in the main cable and the third cable conductor 15 serving as the branch cable by the connecting device 8, the connecting device 8 is a strip-shaped connecting sheet, the connecting sheet can be a copper sheet, and the copper sheet is bent to be C-shaped.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a branch cable is in advance hoisted in environmental protection, characterized in that, includes main cable and branch cable, the main cable includes a plurality of bearing rope (1), a plurality of cable conductor (3) and is used for the parcel cable belting (6) of cable conductor (3), bearing rope (1) evenly distributed is in between cable conductor (3), the both ends of main cable are equipped with first connector (10) and second connector (11) respectively, branch cable's one end is equipped with third connector (12), every cable conductor (3) all including be used for with first cable conductor (13) that first connector (10) is connected, be used for with second cable conductor (14) that second connector (11) is connected and be used for with third cable conductor (15) that third connector (12) is connected, every first cable conductor (13) all through connecting device (8) respectively with the correspondence second cable conductor (14) and branch cable conductor (15) and the correspondence The corresponding third cable conductors (15) are connected.

2. The environmental-friendly hoisting pre-branch cable according to claim 1, wherein each connecting device (8) comprises a connecting piece, one end of each connecting piece is connected with the corresponding first cable conductor (13), the other end of each connecting piece is respectively connected with the corresponding second cable conductor (14) and the corresponding third cable conductor (15), and each connecting piece is C-shaped.

3. The environmental-friendly hoisting pre-branch cable according to claim 2, wherein each connecting piece is provided with a first insulating layer (9).

4. An environmental protection hoisting pre-branch cable according to claim 1 or 2, characterized in that the connection device (8) on each cable conductor (3) is located on the side of the main cable near the third connection port (12).

5. The environmental-friendly hoisting pre-branch cable according to claim 1 or 2, wherein a second insulating layer (2) is arranged outside each bearing rope (1).

6. The environment-friendly hoisting pre-branch cable according to claim 1, wherein a mineral paper rope filling layer (5) is arranged between the cable conductor (3) and the cabling belt (6).

7. The environment-friendly hoisting pre-branch cable according to claim 1 or 6, wherein the cabling tape (6) is a low-smoke halogen-free flame retardant tape; and a protective layer (7) is arranged outside the cabling wrapping belt (6).

8. The environmental-friendly hoisting pre-branch cable according to claim 2 or 3, wherein the edge of each connecting sheet is provided with a round corner.

9. An environmental protection hoisting pre-branch cable according to claim 1, 2 or 6, characterized in that the cable conductor (3) is an aluminum alloy stranded conductor.

10. The environmental-friendly hoisting pre-branch cable according to claim 9, wherein a third insulating layer (4) is arranged outside each cable conductor (3).