CN208369172U - A kind of underground cable of reserved branch mouth - Google Patents

Abstract

The utility model discloses a kind of underground cables of reserved branch mouth of underground cable technical field, including leading body core wire, the left and right ends outer wall of the leading body core wire is socketed with the first insulation sleeve, the outer wall of the leading body core wire is socketed with metallic sheath, the top of the auxiliary-conductor core wire is contacted with the bottom of leading body core wire, the right end outer wall of the auxiliary-conductor core wire is socketed with the second insulation sleeve, auxiliary-conductor core wire is connected with by metallic sheath on the underground cable leading body core wire, that is branch cable, branch cable is previously fabricated on leader cable by factory, avoid the trouble of patch in construction, shorten construction period, a binding post is also reserved in branch cable connecting part, second branch cable can be connected on binding post according to demand, connection is extended to leader cable convenient for user, it is equipped in the insulation sleeve of leader cable poly- The tensile strength of insulation sleeve can be improved in vinyl fiber woven mesh layer.

Description

A kind of underground cable of reserved branch mouth

Technical field

The utility model relates to underground cable technical field, specially a kind of underground cable of reserved branch mouth.

Background technique

Buried cable refers to compared with common overhead line, is often embedded in the cable of underground, therefore also known as buried cable, cable are It is made of the conductor outsourcing insulation and protective layer of one or more mutually insulated, for electric power or information to be transmitted to from one The conducting wire at another place, into after modern society, due to urban land anxiety, traffic pressure is big, the reasons such as appearance of the city construction, big city Generally use buried cable power transmission mode, relative to overhead line, cable have take up little area, transmit electricity reliably, strong antijamming capability etc. Advantage, for buried cable due to being usually set up in underground pipe gallery or stepping in soil, use environment is special, need wiring or Become more to be not easy when changing line direction, and common cable is without reserved connection jaws, so that when needing wiring Need to peel off the conductor core wire of the thick insulating layer connecting cable of buried cable, the cable after connection is also noted that waterproof, behaviour It is more inconvenient to make, and brings many troubles for user.

Utility model content

The purpose of this utility model is to provide a kind of underground cables of reserved branch mouth, to solve in above-mentioned background technique The common cable proposed is without reserved connection jaws, so that needing to peel off the thick insulation of buried cable when needing wiring The conductor core wire of layer connecting cable, the cable after connection are also noted that waterproof, and operation is more inconvenient, brings for user many Troublesome problem.

To achieve the above object, the utility model provides the following technical solutions: a kind of underground cable of reserved branch mouth, packet Leading body core wire is included, the left and right ends outer wall of the leading body core wire is socketed with the first insulation sleeve, the leading body core wire Outer wall is socketed with metallic sheath, and the intracavity bottom of the metallic sheath is equipped with auxiliary-conductor core wire, the top of the auxiliary-conductor core wire and master The bottom of conductor core wire contacts, and the right end outer wall of the auxiliary-conductor core wire is socketed with the second insulation sleeve, first insulation sleeve and The outer wall of second insulation sleeve is socketed with shell, and the metallic sheath is located at the inner cavity of shell, is connected with and connects at the top of the metallic sheath The top of shell is run through at terminal, the top of the binding post, is connected with casing at the top of the shell, outside the bottom end of described sleeve pipe Wall is socketed with sealing ring, and the screw top of described sleeve pipe is connected with nut cap, and the intracavity bottom of described sleeve pipe is filled with Waterproof glue line, The inner cavity top of the nut cap is connected with gasket, and the surface crown of the binding post offers wiring hole, first insulation The inner cavity of set is equipped with woven mesh layer.

Preferably, the metallic sheath is copper metallic sheath, and it is prominent that the inner cavity front and rear sides of the metallic sheath are equipped with zigzag It rises.

Preferably, the cross section of the sealing ring is U-shaped, and sealing ring is PU polyurethane rubber seal circle, the nut cap Exterior bottom and sealing ring interior side contacts.

Preferably, the top of the binding post is lower than the top of casing, and the binding post is connected to gold by welding manner Belong to the top of set.

Compared with prior art, the utility model has the beneficial effects that passing through metal on the underground cable leading body core wire Set is connected with auxiliary-conductor core wire, i.e. branch cable, and branch cable is previously fabricated on leader cable by factory, avoids and faces in construction When wiring trouble, shorten construction period, branch cable connecting part also reserve a binding post, can be according to demand in wiring Second branch cable is connected on column, and connection is extended to leader cable convenient for user, is equipped in the insulation sleeve of leader cable poly- The tensile strength of insulation sleeve can be improved in vinyl fiber woven mesh layer.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model binding post right view；

Fig. 3 is the first insulation sleeve of the utility model right view；

Fig. 4 is the utility model metallic sheath right view.

In figure: 1 leading body core wire, 2 first insulation sleeves, 3 metallic sheaths, 4 auxiliary-conductor core wires, 5 second insulation sleeves, 6 shells, 7 Binding post, 8 casings, 9 sealing rings, 10 nut caps, 11 Waterproof glue lines, 12 gaskets, 13 wiring holes, 14 woven mesh layers.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-4 is please referred to, the utility model provides a kind of technical solution: a kind of underground cable of reserved branch mouth, including Leading body core wire 1, the left and right ends outer wall of the leading body core wire 1 are socketed with the first insulation sleeve 2, the leading body core wire 1 Outer wall be socketed with metallic sheath 3, the intracavity bottom of the metallic sheath 3 is equipped with auxiliary-conductor core wire 4, the top of the auxiliary-conductor core wire 4 Portion is contacted with the bottom of leading body core wire 1, and auxiliary-conductor core wire 4 is enable to connect conduction with leading body core wire 1, auxiliary-conductor core wire 4, That is branch cable, branch cable is previously fabricated on main cable by factory, avoids the trouble of patch in construction, described The right end outer wall of auxiliary-conductor core wire 4 is socketed with the second insulation sleeve 5, the outer wall socket of first insulation sleeve 2 and the second insulation sleeve 5 There is shell 6, the metallic sheath 3 is located at the inner cavity of shell 6, by shell 6 by the connection of leading body core wire 1 and auxiliary-conductor core wire 4 Place seals, and plays insulating effect, while preventing junction by the invasion of water or other materials, the top of the metallic sheath 3 Portion is connected with binding post 7, and the top of shell 6 is run through at the top of the binding post 7, and the top of the shell 6 is connected with casing 8, The bottom end outer wall of described sleeve pipe 8 is socketed with sealing ring 9, and the screw top of described sleeve pipe 8 is connected with nut cap 10, described sleeve pipe 8 Intracavity bottom is filled with Waterproof glue line 11, and Waterproof glue line 11 is used to fill the gap between binding post 7 and shell 6, plays sealing Effect, prevents water from entering 6 inner cavity of shell, and the inner cavity top of the nut cap 10 is connected with gasket 12, passes through sealing ring 9 and sealing Pad 12 seals the bottom of nut cap 10 and the top of casing 8 simultaneously, prevents water or other materials from entering the interior of casing 8 Chamber, the surface crown of the binding post 7 offer wiring hole 13, and binding post 7 is convenient for user for connecting other branch cables Connection is extended to leader cable, by opening up for wiring hole 13, branch cable wiring hole 13 can be passed through and be connect in connection The hinge of terminal 7 is threaded together, and binding post 7 is facilitated to connect with branch cable, and the inner cavity of first insulation sleeve 2 is equipped with woven mesh layer 14。

Wherein, the metallic sheath 3 is copper metallic sheath, and the resistivity of copper is lower to have good electric conductivity, the metal The inner cavity front and rear sides of set 3 are equipped with serration, are pressed leading body core wire 1 and auxiliary-conductor core wire 4 using copper metallic sheath It is connected together, serration can be in embedded conductor core wire, so that auxiliary-conductor core wire 4 is not easy in metallic sheath 3 when crimping Sliding, keeps its connection more reliable, and the cross section of the sealing ring 9 is U-shaped, and sealing ring 9 is PU polyurethane rubber seal circle, The interior side contacts of the exterior bottom of the nut cap 10 and sealing ring 9, PU polyurethane rubber seal circle have high resiliency and ageing-resistant, Being set as U-shaped can fit with the lateral wall of nut cap 10, make it have good leakproofness, and the top of the binding post 7 is low In the top of casing 8, the binding post 7 is connected to the top of metallic sheath 3 by welding manner, and welding is so that binding post 7 and gold It is more secured to belong to 3 connection of set, it is not easy to disengage, lead to poor contact.

Working principle: the junction of leading body core wire 1 and auxiliary-conductor core wire 4 is sealed by shell 6, plays insulation Effect, while preventing junction from being played insulation by the invasion of water or other materials, the first insulation sleeve 2 and the second insulation sleeve 5 and making With being connected with auxiliary-conductor core wire 4, i.e. branch cable by metallic sheath 3 on leading body core wire 1, branch cable is made in advance by factory It makes on main cable, avoids the trouble of patch in construction, nut cap 10 and casing 8 are used to seal binding post 7, When needing to be extended connection to leader cable, unscrews nut cap 10 and another branch cable is connected with binding post 7, by connecing String holes 13 opens up, and branch cable can be passed through wiring hole 13 in connection and is threaded together with the hinge of binding post 7, facilitate binding post 7 It is connect with branch cable, is wrapped with insulating tape in junction after connection and to pour into marine glue in casing 8 close by joint It closes and, be isolated from the outside, woven mesh layer 14 is pull resistance with higher made of polyethylene fibre is woven together Can, it is located at the inside of the first insulation sleeve 2,2 tensile strength of the first insulation sleeve can be improved.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of underground cable of reserved branch mouth, including leading body core wire (1), it is characterised in that: the leading body core wire (1) Left and right ends outer wall be socketed with the first insulation sleeve (2), the outer wall of the leading body core wire (1) is socketed with metallic sheath (3), institute The intracavity bottom for stating metallic sheath (3) is equipped with auxiliary-conductor core wire (4), the top and leading body core wire (1) of the auxiliary-conductor core wire (4) Bottom contact, the right end outer wall of the auxiliary-conductor core wire (4) is socketed with the second insulation sleeve (5), first insulation sleeve (2) and The outer wall of second insulation sleeve (5) is socketed with shell (6), and the metallic sheath (3) is located at the inner cavity of shell (6), the metallic sheath (3) Top be connected with binding post (7), the top of shell (6), the top of the shell (6) are run through in the top of the binding post (7) It is connected with casing (8), the bottom end outer wall of described sleeve pipe (8) is socketed with sealing ring (9), the screw top connection of described sleeve pipe (8) Have nut cap (10), the intracavity bottom of described sleeve pipe (8) is filled with Waterproof glue line (11), and the inner cavity top of the nut cap (10) connects Have gasket (12), the surface crown of the binding post (7) offers wiring hole (13), the inner cavity of first insulation sleeve (2) Equipped with woven mesh layer (14).

2. a kind of underground cable of reserved branch mouth according to claim 1, it is characterised in that: the metallic sheath (3) is The inner cavity front and rear sides of copper metallic sheath, the metallic sheath (3) are equipped with serration.

3. a kind of underground cable of reserved branch mouth according to claim 1, it is characterised in that: the sealing ring (9) Cross section is U-shaped, and sealing ring (9) is PU polyurethane rubber seal circle, exterior bottom and sealing ring (9) of the nut cap (10) Interior side contacts.

4. a kind of underground cable of reserved branch mouth according to claim 1, it is characterised in that: the binding post (7) Top is lower than the top of casing (8), and the binding post (7) is connected to the top of metallic sheath (3) by welding manner.