Strong-resistance lightning-proof tree-hanging cable and fixing device thereof

Abstract

The application discloses a hanging tree cable with strong resistance to lightning and thunder, which comprises a hanging tree wire, wherein the hanging tree wire comprises, from outside to inside, an outer sheath, an outer rhombic grounding layer, an inner rhombic grounding layer, an oil bag, a mica tape, an insulation layer and an inner core in sequence; the insulation layer wraps the inner core; the mica tape is wound outside the insulation layer; the outer rhombic grounding layer, the inner rhombic grounding layer and the oil bag are arranged between the outer sheath and the mica tape through extrusion; and the outer rhombic grounding layer and the inner rhombic grounding layer are arranged in an inner-outer staggered mode. The hanging tree cable with strong resistance to lightning and thunder and the fixing device thereof have the advantages that the rhombic unit body shell is made of insulating rubber, the insulating conductors are independently arranged and connected, the mutual influence between the conductors is avoided, the internal paraffin filler can be melted due to the local high temperature generated by lightning and thunder, heat is absorbed, the local temperature is reduced, the grounding conductor is prevented from being broken down, the hanging tree cable is suitable for different working conditions, and a better use prospect is brought.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable design, in particular to a strong resistance lightning-proof hanging tree cable and fixing device thereof. BACKGROUND

[0002] With the development of urban economy, the planning of municipal roads is becoming more and more modern, and more and more decorative lamp strips are installed on the roadside greenery, which can be lit at night and play a beautifying role. The wire part of the decorative lamp strip is connected from the underground wiring or the nearby wire pole, and these wires need to be bound to the main stem or branch of the tree, which brings some problems. First, the wires hanging on the tree are easy to be struck by lightning. In the case of lightning penetrating the outer sheath of the cable, the wire part of the grounding layer is often struck inward. Because the distance between the wire parts is close, they are easy to stick together in the case of lightning striking the wire, causing excessive local heat and being burned off, which threatens the internal wire core and causes damage to the entire wire. Second, the hanging tree cable needs to be fixed on the tree trunk by a hoop. The current hoop is made of metal and contacts the tree bark by clamping. This damages the tree trunk and the metal easily penetrates into the tree trunk over time, causing more damage and being unsightly. Therefore, we propose a strong resistance lightning-proof hanging tree cable and fixing device thereof. SUMMARY

[0003] The main purpose of the present application is to provide a strong resistance lightning-proof hanging tree cable and fixing device thereof, which can effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] A strong resistance lightning-proof hanging tree cable, comprising a hanging tree wire, characterized in that: the hanging tree wire comprises, from the outside to the inside, an outer sheath, an outer rhombic grounding layer, an inner rhombic grounding layer, an oil tank, a mica tape, an insulation layer and an inner core. The insulation layer wraps the inner core, the mica tape is wound outside the insulation layer, the outer rhombic grounding layer, the inner rhombic grounding layer and the oil tank are arranged between the outer sheath and the mica tape by extrusion, the outer rhombic grounding layer and the inner rhombic grounding layer are arranged alternately inside and outside, and each is composed of a plurality of rhombic unit bodies. Each rhombic unit body is connected to other groups, the outer part of the rhombic unit body is provided with an insulating rubber sleeve, the inner part of the rhombic unit body is provided with a grounding conductor, the outer part of the grounding conductor is provided with a paraffin filler, and the inner part of the oil tank is filled with fire-retardant oil.

[0006] Preferably, the hanging tree wire is specially used on trees.

[0007] Preferably, several groups of ground conductors in the outer and inner rhombic ground layers are arranged inside and outside respectively, and the width of the inner ground conductors can just fill the space between the ground conductors of the adjacent outer rhombic ground layer, so as to realize 360-degree arrangement without dead angle.

[0008] The fixing device of the lightning-proof tree-hanging cable comprises a first cable clamp and a second cable clamp, a clamping groove is formed between the first cable clamp and the second cable clamp for the tree-hanging cable to pass through, and ear pieces are arranged at the two ends of the first cable clamp and the second cable clamp.

[0009] Preferably, the clamping groove is circular in cross section, and the cross-sectional area of the clamping groove is not greater than the cross-sectional area of the tree-hanging cable.

[0010] Preferably, the two groups of ear pieces and the two groups of connecting pieces are provided with tension springs, and the upper and lower ends of the tension springs are provided with butt pieces.

[0011] The fixing device of the lightning-proof tree-hanging cable provided by the application has the advantages that compared with the prior art, the fixing device of the lightning-proof tree-hanging cable provided by the application has the following remarkable improvements and advantages:

[0012] (1) The inner and outer rhombic ground layers are arranged, the width of the inner ground conductors can just fill the space between the ground conductors of the adjacent outer rhombic ground layer, so as to realize 360-degree arrangement without dead angle, thereby preventing lightning from penetrating into the space between the conductors, and the space between the conductors is enlarged due to the arrangement, thereby avoiding the sticking phenomenon caused by lightning.

[0013] (2) The rhombic unit body shell is made of insulating rubber, the insulating conductors are independently arranged and connected, the mutual influence between the conductors is eliminated, the internal paraffin filler is melted due to the local high temperature caused by lightning, heat is absorbed, the local temperature is reduced, and the ground conductors are prevented from being broken down.

[0014] (3) The oil bag is arranged, the built-in fire-retardant oil is matched with the mica tape, double-layer protection is realized, the effect of fire retardation and fire extinguishing is achieved, the oil bag has elasticity and can resist external force, the oil bag has a buffering effect and protects the internal wire core.

[0015] (4) Set the combination of buffer air bag layer and cloth bag, the buffer air bag can reduce the pressure damage of metal hoop to the tree bark, make the acting force between them have elasticity, the cloth bag is filled with coarse sand, the friction force with the tree bark surface is increased, the friction force is used as the main acting force to fix the whole fixing device, so that the effect of protecting the tree bark is achieved.

[0016] (5) The whole structure is simple in design, meets the actual use standard, solves many technical problems, prolongs the service life of the cable, protects the tree trunk, and the use effect is better than that of the traditional mode. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the internal view of the tree hanging electric wire of the application;

[0018] Figure 2 It is the partial enlarged view of the rhombic grounding layer of the application;

[0019] Figure 3 It is the overall structure diagram of the fixing device of the application;

[0020] Figure 4 It is the plan view of the cable hoop of the application;

[0021] Figure 5 It is the internal structure diagram of the tree trunk hoop of the application.

[0022] In the drawing: 1, tree hanging electric wire; 2, outer sheath; 3, outer rhombic grounding layer; 4, inner rhombic grounding layer; 5, oil bag; 6, mica tape; 7, insulation layer; 8, inner core; 9, rhombic rubber unit body; 10, insulating rubber sleeve; 11, grounding conductor; 12, paraffin filler; 13, fire-retardant oil; 14, No. 1 cable hoop; 15, No. 2 cable hoop; 16, clamping groove; 17, ear piece; 18, first bolt; 19, small hole; 20, No. 1 tree trunk hoop; 21, No. 2 tree trunk hoop; 22, connecting piece; 23, large hole; 24, second bolt; 25, buffer air bag layer; 26, glue joint layer; 27, cloth bag; 28, coarse sand particles; 29, tension spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0024] As Figures 1-5As shown, a strong lightning-resistant hanging tree cable includes a hanging tree wire 1, which sequentially includes an outer sheath 2, an outer rhombic grounding layer 3, an inner rhombic grounding layer 4, an oil pocket 5, a mica tape 6, an insulation layer 7, and an inner core 8 from outside to inside. The insulation layer 7 wraps the inner core 8, and the mica tape 6 is wound outside the insulation layer 7. The outer rhombic grounding layer 3, the inner rhombic grounding layer 4, and the oil pocket 5 are all arranged between the outer sheath 2 and the mica tape 6 by extrusion. The outer rhombic grounding layer 3 and the inner rhombic grounding layer 4 are staggered inside and outside, and are both composed of a plurality of rhombic unit bodies 9. Each group of rhombic unit bodies 9 is connected to other groups. The rhombic unit body 9 is provided with an insulating rubber sleeve 10 outside, and a grounding conductor 11 inside. The outer part of the grounding conductor 11 is provided with a paraffin filler 12. The inside of the oil pocket 5 is filled with fire-retardant oil 13.

[0025] A fixing device for the strong lightning-resistant hanging tree cable includes a first cable clamp 14 and a second cable clamp 15. A clamping groove 16 is formed between the first cable clamp 14 and the second cable clamp 15 for the hanging tree wire 1 to pass through. The two ends of the first cable clamp 14 and the second cable clamp 15 are both provided with ear pieces 17. Two groups of small holes 19 are formed on each group of ear pieces 17 for the first bolts 18 to pass through. The ear pieces 17 of the second cable clamp 15 are respectively hinged to a first tree trunk clamp 20 and a second tree trunk clamp 21. The end parts of the first tree trunk clamp 20 and the second tree trunk clamp 21 are both welded with connecting pieces 22. A large hole 23 is formed in the middle part of the connecting piece 22 for the second bolt 24 to pass through. The inner sides of the first tree trunk clamp 20 and the second tree trunk clamp 21 are provided with a buffer air bag layer 25. The buffer air bag layer 25 is adhered with cloth bags 27 through a glue layer 26. The cloth bags 27 contain a plurality of groups of coarse sand particles 28. The coarse sand particles 28 are closely attached to the tree trunk.

[0026] The hanging tree wire 1 is specially used on trees. A plurality of groups of grounding conductors 11 in the outer rhombic grounding layer 3 and the inner rhombic grounding layer 4 are arranged inside and outside, respectively. The width of the inner grounding conductor 11 can exactly fill the spacing between the grounding conductors 11 of the adjacent outer rhombic grounding layer 3, so as to realize 360-degree non-dead-angle arrangement. The clamping groove 16 has a circular cross section, and the cross-sectional area is not greater than the cross-sectional area of the hanging tree wire 1 in use. Tension springs 29 are arranged between the two groups of ear pieces 17 and between the two groups of connecting pieces 22. The upper and lower ends of the tension spring 29 are both provided with butt pieces. One group of butt pieces is fixed on the surface of the ear piece 17 and the connecting piece 22, and the other group of butt pieces is in a movable state. The tension spring 29 is used to control the clamping degree of the cable and the tree trunk. The number is set according to actual needs, but needs to be symmetrically arranged.

[0027] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0028] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. A tree-hanging cable with strong resistance to lightning strikes, comprising a tree-hanging wire (1), characterized in that: The tree-hanging power line (1) comprises, from the outside in, an outer sheath (2), an outer diamond-shaped grounding layer (3), an inner diamond-shaped grounding layer (4), an oil bladder (5), a mica tape (6), an insulation layer (7), and an inner core (8). The insulation layer (7) wraps around the inner core (8), and the mica tape (6) is wrapped around the insulation layer (7). The outer diamond-shaped grounding layer (3), the inner diamond-shaped grounding layer (4), and the oil bladder (5) are all extruded between the outer sheath (2) and the mica tape (6). The outer rhomboid grounding layer (3) and the inner rhomboid grounding layer (4) are arranged alternately, one inside and one outside, and each is composed of several groups of rhomboid units (9). Each group of rhomboid rubber units (9) is connected to the other groups. The outer side of the rhomboid unit (9) is provided with an insulating rubber sleeve (10). The center of the inner side of the rhomboid unit (9) is provided with a grounding conductor (11). The outer side of the grounding conductor (11) is provided with a paraffin filler (12). The inside of the oil bladder (5) is filled with fire-retardant oil (13). The outer rhomboid grounding layer (3) and the inner rhomboid grounding layer (4) are respectively set inside and outside. The width of the inner grounding conductor (11) can just fill the gap between the grounding conductors (11) of the adjacent outer rhomboid grounding layer (3), thereby achieving a 360-degree arrangement without dead angles.

2. The high-resistance lightning-proof tree-hanging cable according to claim 1, characterized in that: The tree-hanging wire (1) is specifically designed for use on trees.

3. A fixing device for a high-resistance lightning-proof tree-hanging cable, applied to the high-resistance lightning-proof tree-hanging cable as described in claim 1 or 2, characterized in that: The fixing device includes a first cable clamp (14) and a second cable clamp (15). A groove (16) is formed between the first cable clamp (14) and the second cable clamp (15) for the tree-hanging wire (1) to pass through. Both ends of the first cable clamp (14) and the second cable clamp (15) are provided with lugs (17). Each lug (17) has two sets of small holes (19) for the first bolt (18) to pass through. The ends of the lugs (17) of the second cable clamp (15) are respectively hinged to the first trunk clamp (20) and the second trunk clamp. The ends of the first trunk hoop (20) and the second trunk hoop (21) are welded with connecting pieces (22). A large hole (23) is opened in the middle of the connecting piece (22) for the second bolt to pass through (24). The inner sides of the first trunk hoop (20) and the second trunk hoop (21) are provided with a buffer airbag layer (25). The buffer airbag layer (25) is bonded to a cloth bag (27) through an adhesive layer (26). The cloth bag (27) contains several sets of coarse sand particles (28). The coarse sand particles (28) are tightly attached to the trunk.

4. The fixing device for a tree-hanging cable with strong resistance to lightning strikes according to claim 3, characterized in that: The clamping groove (16) has a circular cross-section, and its cross-sectional area is not greater than the cross-sectional area of ​​the tree-hanging wire (1).

5. The fixing device for a tree-hanging cable with strong resistance to lightning strikes according to claim 4, characterized in that: Tensioning springs (29) are provided between the two sets of ear pieces (17) and between the two sets of connecting pieces (22). The upper and lower ends of the tensioning springs (29) are provided with mating pieces. One set of mating pieces is fixed on the surface of the ear pieces (17) and the connecting pieces (22), while the other set of mating pieces is in an active state.

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