CN1407679A - Cable protective pipe, Method for laying and leading it - Google Patents
Cable protective pipe, Method for laying and leading it Download PDFInfo
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- CN1407679A CN1407679A CN02125195A CN02125195A CN1407679A CN 1407679 A CN1407679 A CN 1407679A CN 02125195 A CN02125195 A CN 02125195A CN 02125195 A CN02125195 A CN 02125195A CN 1407679 A CN1407679 A CN 1407679A
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- Prior art keywords
- pipe
- cable
- draw piece
- cable protection
- subjected
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/504—Installation in solid material, e.g. underground
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
A cable protecting pipe 14 is laid in the air in advance. A cable is wired in the air by passing the cable into the cable protecting pipe. As the cable protecting pipe 14, a plastic protective pipe body is used that is integrated with tension members vertically attached to its outside.
Description
Technical field
For example the present invention relates to cable protection pipe and laying method and the introducing method under the state of protection optical cable etc., laid.
Background technology
Surging the constructing of advancing cable network that needs along with the high speed communication bulky information in recent years.
For example advise utilizing the sewer pipe of having laid shown in Japanese kokai publication hei 3-50483 communique, the Japanese kokai publication hei 11-285137 communique like that as a kind of means that optical networking is constructed.The method of laying optical cable in sewer pipe of prior art is that the cable supporter is installed to separate appropriate intervals in the top in sewer pipe, supports the half-way of optical cable by this cable supporter.
As other means, the outer tube that is made of bigbore pipe and cable trough etc. is imbedded in the ground, in this outer tube, lay many in pipe, it is known introducing the method for laying optical cable in the pipe then in each.
As mentioned above, when in sewer pipe, laying optical cable, do not have special problem when directly laying optical cable,,, lay protection tube earlier, adopt again optical cable is incorporated into operation such in the cable protection pipe, will following problem take place if use and above-mentioned same method.
That is to say; if holder is installed every appropriate intervals in the top in sewer pipe; and when being supported in the cable protection pipe on this supporter, between each supporter, can produce the sagging of protection tube, the interval that the cable protection pipe is become by supporter forms wavy.The result is in the cable protection pipe of laying during leading in cable, and making the frictional force of cable protection pipe and optical cable become the big tension force of introducing can be above the allowable tension of optical cable, thereby causes the problem that can not continue to introduce on the way.
In addition, if in the scope of the allowable tension that is no more than optical cable, introduce, the problem that then has the distance that can introduce to shorten.Be can be flexible during big bellows especially at the cable protection pipe, the easier generation of above-mentioned problem.
In addition, as mentioned above, in the outer tube that constitutes with bigbore pipe and cable trough etc., introduce many in the pipe method of laying, exist to apply big tension force on inner pipe when introducing and the problem of pipe elongation in taking place.Because interior pipe generally will be incorporated in the outer tube by the narrow space of hand hole, can be flexible so require interior pipe to have.Therefore preferably use plastic bellows as interior pipe, but bellows have the problem of easy generation elongation when being subjected to big tension force.
At this, for example shown in the Japanese kokai publication hei 5-99375 communique, vertically mixing the band that is subjected to draw piece in the outside of flexible pipe along it, to be subjected to the flexible pipe of draw piece be known.
In addition, the spy to open flat 5-99375 communique disclosed be to make the flexible pipe that is subjected to draw piece to be subjected to draw piece along the band of vertically tiing up the tool flexibility on flexible pipe by cord of flexible pipe.But this pipe has because of cord and disconnects the incidental problem of trouble that separated from flexible pipe by draw piece that makes.
Summary of the invention
The present invention proposes in view of the above problems, and purpose provides a kind of cable protection pipe and laying method and introducing method that sagging very little, anti-hightension, tension stress performance are improved.
Cable protection pipe of the present invention is characterised in that: mix along its longitudinal direction in plastic protection tube external side of main body and be subjected to draw piece, make to be subjected to draw piece and above-mentioned protection tube main body to form one.
If according to such formation, make this cable protection pipe be supported in the supporter of appropriate intervals configuration on after, by being subjected to apply tension force on the draw piece, can eliminate the sagging of cable protection pipe between supporter in fact.
Above-mentioned cable protection pipe is preferably vertically mixed along it in plastic protection tube external side of main body and to be subjected to draw piece, is subjected to draw piece and above-mentioned protection tube main body formation one by making coated with plastic wrapper in its outside.
According to such formation, can make the protection tube main body simply and be subjected to draw piece to form one.
As above-mentioned protection tube main body, though also can use straight tube, preferably use bellows, make the cable protection pipe all have flexibility, lay operation thereby improve.
In addition, though be subjected to draw piece to be one, the peripheral direction that is preferably in above-mentioned protection tube main body is roughly equally spaced mixed many.Particularly the central axis balanced configuration of relative protection tube main body is two, and the flexibility of a direction when reeling not damage tube is then better.
In addition, preferably make above-mentioned protection tube and overcoat not fuse (certain also not bonding), so that do not lose flexibility.
In addition, above-mentioned cable protection pipe also can make its overcoat and protection tube main body fuse.If overcoat and protection tube main body are fused, then have and to make the advantage that is subjected to draw piece and protection tube main body fixing more firmly.At this moment can make the protection tube main body make bellows yet, overcoat is only fused in the corrugated peak of tube body portion, portion does not fuse in paddy.If do like this, just can not make flexible loss too big.
In addition, do not fuse, and preferably the protection tube main body is made, applied mechanically low density polyethylene (LDPE) outward and make with high density polyethylene (HDPE) in order to make overcoat and protection tube main body.Make easy to manufacturely like this, cost is low.
In addition, above-mentioned cable protection pipe preferably makes overcoat to form the shape heave laterally being subjected to stride across on the position of draw piece the direction that is subjected to draw piece.
If do like this, because of become by draw piece to be housed in the state of the inner recess of overcoat, moved to peripheral direction by draw piece along the protection tube main body and can stop, make the position stability that is subjected to draw piece.
In addition, above-mentioned cable protection pipe also can constitute the protection tube main body by bellows, be enclosed within outward on the position of tension part to be subjected to the draw piece mode to form the shape of heaving laterally to stride across, and the above-mentioned outer above-mentioned bellows paddy portion position that is enclosed within enters in this paddy portion.Like this, can improve the integraty of protection tube main body and overcoat, strengthen the hold that is subjected to draw piece.Make overcoat be subjected to the mode more than the half cycle of outer peripheral face of draw piece to form then preferred especially with covering in addition.
So, because become under the state of being clamped by overcoat by draw piece, along the circumferential direction and longitudinally relatively moved by the relative protection tube main body of draw piece so can stop really.Preferably make between the end of the paddy portion of protection tube main body and overcoat and leave the gap, thereby flexibility is better.
In addition, the main body of above-mentioned cable protection pipe is preferably made by the plastics that contain Ratproof agent, and overcoat is made by the plastics that do not contain Ratproof agent.
Because the cable protection pipe that is laid in the sewer pipe has the bad possibility of the damaged by rats of being subjected to; so preferably contain Ratproof agent; at this moment have the plastics that contain Ratproof agent as on the protection tube main body, using; and on the coat with the plastics that do not contain Ratproof agent; can prevent that then Ratproof agent from volatilizing in vain; the Ratproof agent effect was kept for a long time, made the operator not be subjected to the baneful influence that causes because of Ratproof agent again.
In addition; the laying method of cable protection pipe of the present invention is characterised in that: above-mentioned cable protection pipe support is laid on be configured in cable with appropriate intervals and lays on the supporter on the route, what make above-mentioned cable protection pipe is subjected to draw piece at the two ends that are fixed on laying-out to the state that is subjected to draw piece to apply tension force.
When being laid on above-mentioned cable protection pipe in the sewer pipe; above-mentioned cable protection pipe can be supported in with being along the longitudinal movement separate on the supporter on the top that appropriate intervals is installed in sewer pipe; to be subjected to draw piece, tension part to be fixed on the two ends of above-mentioned sewer pipe, the draw piece that is subjected to of above-mentioned cable protection pipe is fixed by above-mentioned tension part this being subjected to draw piece apply under the state of tension force.
In addition, the introducing method of cable protection pipe of the present invention is characterised in that: when introducing new interior pipe in the outer tube, use above-mentioned cable protection pipe as pipe in above-mentioned, by apply tension force on being subjected to draw piece this cable protection pipe is introduced in the outer tube.
If do like this, even apply big tension force on inner pipe, the phenomenon that pipe extends or breaks in also can not occurring making, thus pipe is set up in outer tube in guaranteeing.
The feature of the introducing method of cable of the present invention is in addition, and the above-mentioned cable protection pipe of built on stilts in advance laying is introduced cable in this cable protection pipe again.
So, can make that to introduce cable easy, and there is no need when laying cable for example, to carry out the high-rise working on electric pole at every turn.
In addition; the pipe layout method of utilizing non-excavating propelling construction method of the present invention is to get out pipe in advance to lay and use the hole in ground; again by the method in the hole that pipe is introduced in this laying usefulness; feature is; vertically mix along it in plastic protection tube external side of main body and to be subjected to draw piece; utilize the protection tube main body and be subjected to the incorporate structure of draw piece, pipe is when introducing, and traction is subjected to draw piece.
So, cause the elongation of pipe in the time of can being suppressed at inlet tube with the friction of soil, and can be with flexible good bellows as the protection tube main body.
Description of drawings
Fig. 1 is the sectional drawing of an execution mode of expression cable protection pipe of the present invention.
Fig. 2 is the key diagram that the method for cable protection pipe of the present invention is made in expression.
Fig. 3 A be expression cable protection pipe of the present invention preferred implementation, with rectangular of the axis of the crest portion that comprises the protection tube main body on cross-sectional view.
Fig. 3 B be with the cross-sectional view on the rectangular plane of axis of the paddy portion that comprises same ripple.
Fig. 3 C is the skiagraph along the A-A line of Fig. 3 A.
Fig. 3 D is the sectional drawing along the B-B line of Fig. 3 B.
Fig. 4 A, Fig. 4 B, Fig. 4 C are the key diagrams that method one example of cable of the present invention is laid in expression.
Fig. 5 is illustrated in the sectional drawing of laying the state of cable protection pipe of the present invention in the sewer pipe.
Fig. 6 A is that expression is fixed on the front view of structure one example on the sewer pipe end to the draw piece that is subjected to of cable protection pipe of the present invention.
Fig. 6 B is the side view of Fig. 6 A.
Fig. 7 is another routine key diagram of method that cable protection pipe of the present invention is laid in expression.
Fig. 8 A is expression with the supporter of the cable of the method for Fig. 7 use, the front elevation before the cable pipe is packed into.
Fig. 8 B is the front elevation after the cable protection pipe of presentation graphs 8A is packed into.
Fig. 9 A is the overall description figure of an execution mode of expression cable protection pipe introducing method of the present invention.
Fig. 9 B is the perspective view of the major part of cable protection pipe.
Figure 10 A is the key diagram that expression is located at cable protection pipe support of the present invention state on the electric pole.
Figure 10 B is the key diagram that the state in the cable protection pipe of the present invention is introduced cable in expression.
Figure 11 is the cross-sectional view of the cable protection pipe of Figure 10.
Figure 12 A and Figure 12 B are the skeleton diagrams of the pipe layout method of the non-excavating propelling construction method of expression by utilizing cable protection pipe of the present invention.
Figure 13 is the sectional drawing of cable protection pipe of the present invention.
Figure 14 is the perspective view of major part of the cable protection pipe of Figure 13.
Figure 15 is the sectional drawing of major part of the cable protection pipe of Figure 13.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawing.
Fig. 1 shows one embodiment of the present invention.Cable protection pipe 10 is to be subjected to draw piece 14 by respectively mix one on the both sides (position of the axis symmetry of protection tube main body 12 relatively) of plastic protection tube main body 12, and lining overcoat 16 makes protection tube main body 12 and is subjected to draw piece 14 to form the structure of one on its outside.
Preferably use from the past always as the high density polyethylene (HDPE) that real result is arranged of plastic tube material or hard ethylene chloride resin material as protection tube main body 12.And make bellows for making protection tube have good flexibility.
In order not hinder the flexibility of protection tube main body 12, overcoat 16 preferably forms wall thickness than the wall thickness of protection tube 12 with the crooked elastic rate material littler than the crooked elastic rate of the material of protection tube main body 12.Specifically, be under the situation of high density polyethylene (HDPE) in protection tube main body 12, overcoat 16 can use low-density polyethylene, is under the situation of hard ethylene chloride resin in protection tube main body 12, and overcoat 16 can use soft chlorination alkene.Preferably make overcoat 16 not fuse (certainly can not be bonding), so that keep the overall flexibility of cable protection pipe 10 good with protection tube main body 12.Perhaps overcoat 16 as shown in the figure; be preferably in and be subjected to locate to contact beyond the draw piece 14 with the outer peripheral face of protection tube main body 12; stride across the section configuration that heaved laterally by draw piece 14 and form in the position that is subjected to draw piece 14; if make such shape; become by draw piece 14 to be accommodated in the state of the inboard that overcoat 16 heaves; stop moved to protection tube main body 12 circumferencial directions by draw piece 14, make the position stability that is subjected to draw piece 14.
Be subjected to draw piece 14 can use twisting thread of zinc-coated wire, stainless steel wire etc., also can use in addition glass fibre, carbon fiber or aramid fibre etc. as FRP line of reinforcement material etc.Being subjected to draw piece 14 also can be to have the tension force that tolerance produces when this cable protection pipe 10 is laid in introducings such as using capstan, and has the parts of the intensity of the timeliness variation after tolerance is laid.
Being subjected to draw piece 14 can be one, but preferably uses many.Along protection tube main body 12 axially mix many when being subjected to draw piece 14, in the almost equally spaced configuration along the circumferential direction of the outside of protection tube main body 12, have the effect that prevents that cable protection pipe 10 is lax like this.Usually use many and be subjected to draw piece; be embedded in the wall of protection tube by draw piece; do effect although it is so with the flexibility that reduces cable integral body; but the draw piece 14 that is subjected to of cable protection pipe 10 of the present invention is configured between protection tube main body 12 and the overcoat 16; and this is not all being melted on protection tube main body 12 and overcoat 16 by draw piece 14 or is bonding; therefore when making cable protection pipe 10 integrally bendings; because of being subjected to draw piece 14 to move some distances, so can suppress influence to overall flexibility relative to protection tube 12 and overcoat 16.
More than such cable protection pipe 10 can for example resemble and make Fig. 2.At first pass through finishing die 20 from first extruder, 18 extrusion molding high density polyethylene pipes; be at tube material with wave forming machine 22 then and carry out wavy shaping in the molten condition; form the pipe that machine is shaped with water cooling plant 24 water-cooleds by wave, tube body 12 is protected.Then from being subjected to tension pipe 14 that draw piece supply source 26 supplies with protection tube main bodys 12 both sides along the axial arrangement of protection tube main body 12 the left and right sides at protection tube 12; overcoat 16 extruding are overlayed on its periphery by formed film 30 from second extruder 28 then; feed overcoat forming machine 32 coolings, just can obtain the such cable protection pipe 10 of Fig. 1 thereafter as with water cooling plant 34.
Fig. 3 A～Fig. 3 D shows the preferred execution mode of cable protection pipe of the present invention.This cable protection pipe 10 uses plastic bellows as protection tube main body 12, will be subjected to draw piece 14 to fit over its both sides vertically, at the plastic overcoat 16 of its outside lining, working hard in shape of overcoat 16.That is to say that overcoat 16 forms the shape of heaving laterally in the place that is subjected to draw piece 14 as shown in Figure 3A, be subjected to draw piece 14 (this point is identical with Fig. 1) so that stride across.In addition, overcoat 16 forms shown in Fig. 3 C like that in the place of the 12a of trough portion of protection tube main body 12, so that it enters among the 12a of this paddy portion.In addition, in the place of the 12a of this paddy portion, as represented like that among Fig. 3 B with symbol 12b, the end of the 12a of paddy portion be subjected to the sunk part that formation overcoat 16 enters between the draw piece 14, be subjected to being coated of periphery of draw piece 14 above half cycle.And between the end of the 12a of paddy portion and overcoat 16, leave the gap, in addition, overcoat 16 can adherence on the bottom of the 12a of paddy portion.
If constitute in this wise,, and the protection tube main body 12 and the integraty of overcoat 16 (both not bonding also not fusions) are improved owing to overcoat 16 enters among the 12a of trough portion of protection tube main body 12.And because be subjected to draw piece 14 to become the state of being clamped by overcoat 16, so also integraty is improved with the hold increase that is subjected to draw piece 14 that relies on overcoat 16 in the place of the 12a of trough portion of protection tube main body 12.The result makes protection tube main body 12 and further improved by the integraty of draw piece 14.In addition, even when having tension force to act on to be subjected on the draw piece 14, along the circumferential direction and vertically all can not move relative to protection tube main body 12 by draw piece 14, thereby can constitute the more stable cable protection pipe 10 of structure.
Above-mentioned cable protection pipe 10 is laid on an example of the method in the sewer pipe below with reference to Fig. 4 A～Fig. 4 C, Fig. 5 and Fig. 6 A, Fig. 6 B explanation.Shown in Fig. 4 A～Fig. 4 C, the two ends that are embedded in underground sewer pipe 36 be embedded in underground hand hole 38A, 38B and be connected.It vertically separates upper edge, top in sewer pipe 36 appropriate intervals a plurality of supporters 40 is installed.At the reel 42 that supply cable protection pipe 10 is set in the localities, and the capstan 44 that withdraws from rope 46 is set in place near another hand hole 38B near a hand hole 38A.
The front end of cable protection pipe 10 is connected by introducing the rear end of the rope 46 in the sewer pipe 36 in pre-supporter 40 (see figure 5)s.Then by withdrawing from rope 46 with capstan 44, cable protection pipe 10 is laid on the top in the sewer pipe 36.After the laying, when eliminating laying tension force by being connected of releasing and rope 46, shown in Fig. 4 B, cable protection pipe 10 occurs lax between adjacent supporter 40.
Lax and such at the two ends of sewer pipe 36 fixed strain spare 48 shown in Fig. 4 C in order to eliminate this, make the two ends that are subjected to draw piece 14 be in the state that this is subjected to apply on the draw piece 14 tension force by this tension part 48.Eliminate the sagging of cable protection pipe 10 whereby in fact.Therefore the optical cable 50 in the time of can making protection tube main body 12 in leading in cable 50 (see figure 5)s and the frictional force minimizing of protection tube main body 12 can carry out the introducing of optical fiber 50 smoothly.Tension part 48 has the structure shown in Fig. 6 A, Fig. 6 B in addition.
That is to say because this tension part 48 shown in Fig. 6 A and Fig. 6 B like that, the end face (or inner face of hand hole 38A, 38B) that is fixed on sewer pipe 36 with tie bolt 52 waits, and inserts the hole that leads to protection tube main body 12 and be subjected to draw piece 14 so have.Passing on the outer end that is subjected to draw piece 14 in this hole by parts 54 are riveted tightly then, what tension was applied with tension force is subjected to draw piece 14.
Then, Fig. 7 shows another example of the method in the sewer pipe 36 that above-mentioned cable protection pipe 10 is laid on.According to this method, the supporter 40 shown in Fig. 8 A, Fig. 8 B is fixed on the top in the sewer pipe 36 by bolt 40a.This supporter 40 has can only be from the formation (spy opens flat 11-285137 communique) of inserting cable protection pipe 10 down.During with such supporter 40, in advance cable protection pipe 10 is introduced in the sewer pipes 36.Then as shown in Figure 7, laying manipulator 56 being walked in sewer pipe 36 makes cable protection pipe 10 press downward to support in the supporter 40.Moving through by the capstan 44 that is provided with on the ground of manipulator 56 withdrawed from the rope 46 that links to each other with manipulator 56 and carried out.Though between supporter 40, occur saggingly during lay cables protection tube 10, should saggingly be in shown in Fig. 4 C like that being subjected to and be subjected on the draw piece 14 under the state of tension force, tension can this be sagging by basic elimination on tension tool 48 by making its two ends.
, in sewer pipe 36 during lay cables protection tube 10, must have tackle in sewer pipe 36 and auxiliary device in the countermeasure of the damaged by rats evil of living.As countermeasure against rats, the material fusion cycloheximide, terpenoid compound, capsicim etc. that are preferably in protection tube main body 12 are as Ratproof agent.Ratproof agent is handled easiness from it and is considered preferably to use to be accommodated in the microencapsulation.The addition of Ratproof agent can pass through the suitably adjustment such as effect of research protection against rodents, but is preferably 0.15～1.0 weight %.If addition is littler than above-mentioned value, then be not enough to protection against rodents, if than above-mentioned value height, then will cause the decline of the formability and the mechanical strength of pipe.
In addition, along with the difference of Ratproof agent kind, the mucous membrane of producer and laying person's eye and nose etc. there is stimulation owing to be added in the part volatilization of the Ratproof agent in the material during extrusion process in advance.As its countermeasure, constitute protection tube main body 12 according to the present invention by the plastics that contain Ratproof agent, and constitute the volatilization that overcoat suppresses Ratproof agent with the overcoat 16 that does not contain Ratproof agent.Do not contain the importantly design in the requsst listed below of thickness of the overcoat 16 of Ratproof agent: have to make and be subjected to draw piece 14 and protection tube main body 12 to become incorporate enough intensity, can not cause when extrusion process and when laying operation that the stimulation of Ratproof agent, the tooth that can not harmful effect be arranged to the flexibility of laying and can reach mouse when damaged by rats is lived can not reach the thickness of protection tube main body 12; concrete, the thickness of overcoat 16 preferably is set in the scope of 0.5～2mm.
One execution mode of the introducing method of cable protection pipe of the present invention is described below with reference to Fig. 9 A, Fig. 9 B.Shown in Fig. 9 A, hand hole (or manhole) 62A, 62B are set at the two ends that are embedded in underground bigbore outer tube 60.The 64th, the interior pipe (situation of cable also has) in being laid in the pipe 60.Like this, pipe is 64 o'clock in setting up in interior pipe 64 has been laid the narrow outer tube 60 of back remaining space stenosis, with this method use interior pipe 64 that such cable protection pipe 10 (with shown in Fig. 3 A～3D identical) conduct is set up shown in Fig. 9 B.
That is to say; a hand hole 62A side is provided with the reel 42 of supplying with cable protection pipe 10 therein; rope 46 is connected makes being subjected on the draw piece 14 of the front of exposing protection tube 10; by capstan 44 these ropes 46 of stretching that are arranged on another hand hole 62B side, so that cable protection pipe 10 is introduced in the outer tubes 60.Though when this introducing because the remaining space in the outer tube 60 is narrow and exist with the interior pipe established 64 and to rub; and tension force that need be big; but the cable protection pipe of setting up 10 is subjected to draw piece 14 and the protection tube main body 12 that can stretch on one side in order to pull at, Yi Bian do not draw reliably not disrumpent feelingsly.If adopt this method, can enable to be laid on the radical increase of the interior pipe (cable protection pipe) in the outer tube 60 easily, thereby can effectively utilize the space in the outer tube 60.
Cable is introduced an execution mode of the method in the cable protection pipe of the present invention below with reference to Figure 10 A, Figure 10 B and Figure 11 explanation.Shown in Figure 10 A, the 70th, and aerial distribution wire such as built on stilts cable and distribution cable and the electric pole that is provided with, the 71st, for example wherein be provided with user's dwelling house of telephone set and other communication terminal end machine.Cable is built on stilts when being provided in user's dwelling house 71, in electric pole 70 and user's dwelling house 71, set up cable protection pipe 72 at first at least.Can also between two wire bars 70, set up protection tube 72.At this moment, preferably the interconnection 73 of the usefulness of cable introducing is in advance inserted in the cable protection pipes 72.
At this; the cable protection pipe 72 that uses as shown in figure 11; be subjected to draw piece 75 in both sides along vertically mixing of protection tube main body 74 by the plastic protection tube main body of forming with corrugated pipe 74; the plastic overcoat 76 that is covered in batch on this outside makes protection tube main body 74 and is subjected to draw piece 75 integrated.Can use galvanized copper wire, stainless steel is twisted thread etc. twist thread or glass fibre, carbon fiber or aramid fibre etc. as FRP line of supporting material etc. as being subjected to draw piece 75.Gou Zao cable protection pipe 72 like this, owing to set up being subjected to add tension force on the draw piece 75, so can not set up almost there to be sagging state in the same manner with the draw piece that is subjected to of prior art.In addition, cable protection pipe 72 also can make protection tube main body 74 and be subjected to draw piece 75 integrated, for example also can be fixed on the protection tube main body 74 by draw piece 75 with bonding agent.
After shown in Figure 10 A, setting up cable protection pipe 72; shown in Figure 10 B like that by distolateral cable 76 being connected with interconnection 73 at one of cable protection pipe 72; at the other end side tension interconnection 73 of cable protection pipe 72, cable 76 is introduced in the cable protection pipe 72 then.In addition, the 77th, the reel of supply cable 76, the 78th, the connecting portion of cable 76 and interconnection 73.
Set cable 76 if make somebody a mere figurehead like this, then make high-rise working become the operation of only when setting up cable protection pipe 72, on electric pole, carrying out, when introducing in the protection tube 72, do not need high-rise working to cable 76.Therefore the aerial distribution wire of cable 76 was carried out easily and safely, also not need scaffold or aerial lift vehicle etc.
In addition, when upgrading cable 76, can use cable protection pipe 72, introduce interconnection 73 in the time of also can removing the cable of having established 76, introduce the cable of newly establishing 76 with this interconnection 73 by raw material.Therefore the aerial distribution wire in the time of also can making the renewal of cable 76 carries out easily and safely; if and utilized the cable protection pipe 72 mixed tension pipe 75, then could also be simply in the place setting that supportive device can not be set at electric pole 70 and 71 in user's dwelling house.
In addition; in method one execution mode of traction cable of the present invention; the cable protection pipe 72 of just mixing tension pipe 75 on the protection tube main body of being made up of bellows 74 is illustrated; but be not limited to bellows; also can be cable protection pipe as shown in Figure 1, and also can be the plastics system cable protection pipe that does not have the simple composition of tension pipe 75.
Pass through a execution mode below with reference to Figure 12～13 explanations with cable protection pipe non-excavating propulsion method of the present invention.
In the non-excavating propulsion method, at first water or other fluid is sprayed from the front end of the drill bit 100 of rotation in the limit, and the limit enters in the soil drilling rod 101, and makes drilling rod 101 spreadings, tunnels the arrival shaft 102 that excavates in advance always.
Then in the shaft 102 that arrives from drilling rod 101 den bohrkopf abbauens 100 will be consistent with the caliber that buries hole enlargement reamer 103 be installed in drilling rod 101 and replace drill bit.Drilling rod 101 is withdrawed from from hole enlargement reamer 103 injection water or other fluid limits in the limit then.At this moment the cable protection pipe 10 that forms pipeline is installed at the rear of hole enlargement reamer 103, when withdrawing from drilling rod 101 in ground inlet tube 10, be routed to driving shaft 106 always.
In pipe layout method of the present invention, can be as shown in Figure 13 as cable protection pipe 10, longitudinally mix in the outside of the protection tube main body of forming by plastic plain tube 12 and to be subjected to draw piece 14, use overcoat 16 to wrap to form integrated.
When introducing this pipe 10 in the ground, traction is subjected to draw piece 14.
In the method, because cable protection pipe 10 is introduced in the ground by draw piece 14,, tension force is subjected on the draw piece 14 so being added in by traction.The result utilizes the pipe and the friction of soil to use cable protection pipe 10, and particularly protection tube main body 12 stretches, and can prevent disrumpent feelings.
In addition,, not only lay a cable protection pipe 10, can also concentrate and lay many according to this method
In order to improve the flexibility of protection tube 10, and, as shown in Figure 15, make protection tube main body 12, at this moment the most handy material lower of the material of overcoat 16 than the density of material of protection tube main body 12 with bellows preferably as Figure 14.For example, use high density polyethylene (HDPE) as protection tube main body 12, overcoat 16 is used low density polyethylene (LDPE), then because overcoat 16 is softer than protection tube main body 12, so the advantage of the flexibility of not damaging cable protection pipe 10 is arranged.
, because of the friction of bellows and soil becomes big, so the overcoat 16 of handy level and smooth formation if overcoat 16 is formed smoothly, just can be reduced friction.
In addition, when on protection tube main body 12, using bellows, make the 12a of paddy portion and the overcoat 16 not weldings or bonding of bellows, be preferably formed as gapped.When making canal curvature, if overcoat 16 is left,, and make and can flexible improve then because of overcoat 16 can stretch easily at the bellows paddy 12a of portion, because may be with little bending radius when introducing, and arrival shaft 102 is diminished.
As described above such; the pipeline face that pushes away nearly method according to non-excavating is laid; if be subjected to the draw piece 14 will be by introducing in the ground and lay being subjected to draw piece 14 to fit on the outside of plastic protection tube main body 12 incorporate protection tube 10 by traction; then be not added in the protection tube main body 12 because of tension force; so can not make the 10 disrumpent feelings or stretchings of cable protection pipe, lay thereby can grow distance ground.If on protection tube main body 12, use bellows in addition, then can flexible good minor radius bending because can carry out, arrive shaft 102 and diminish so can make, excavate construction volume and reduce thereby make, even also can adapt at gapless scene.Even when on protection tube main body 12, using bellows in addition, if make overcoat 16 cunning that flattens,, and can reduce introducing tension force when introducing then because of the friction with the pipeline surface of the soil that takes place reduces, make pipe be difficult for elongation, thereby can grow apart from laying.
[embodiment A-1] uses the internal diameter 30mm that is made by high density polyethylene (HDPE); the pipe of wall thickness 2mm diameter is as the protection tube main body; twist thread as being subjected to draw piece along the stainless steel of axially mixing external diameter 2mm of protection tube main body in its both sides, the high density polyethylene (HDPE) of lining wall thickness 0.5mm produces as shown in Figure 1 cable protection pipe as overcoat on its periphery.In advance in the sewer pipe of internal diameter 250mm, length 100m that supporter 40 as shown in Figure 5 is installed at interval with 1m, this cable protection pipe is introduced and it is supported on the supporter with method such shown in Fig. 4 A～Fig. 4 C.After introducing is finished, be subjected to apply tension force on the draw piece, remove cable protection pipe sagging after, the two ends that are subjected to draw piece are fixed on the inwall of manhole.The cable of being laid is almost straight as straight line, and not sagging between supporter.When being laid on the introducing of the optical cable of external diameter 14.5mm in this cable protection pipe, can below being lower than the allowable tension of cable, lay.
[embodiment A-2] uses the bellows of the internal diameter 28mm, the wall thickness 1mm that are made by high density polyethylene (HDPE) as the protection tube main body; the stainless steel of axially mixing an external diameter 2mm in this its main body of protection tube main body upper edge is twisted thread; as being subjected to draw piece; the high density polyethylene (HDPE) of lining wall thickness 0.5mm is made the cable protection pipe as overcoat on its periphery.In the sewer pipe of internal diameter 250mm, length 100m that supporter 40 as shown in Figure 5 is installed at interval with 1m, introduce with the method that Fig. 4 A～Fig. 4 C is such, and it is supported on the supporter in advance.After introducing is finished, be subjected to apply tension force on the draw piece, remove cable protection pipe sagging after, will be fixed on the inwall of hand hole by the draw piece two ends.The cable protection pipe of being laid is not seen sagging between supporter, lays directly as straight line.When being laid in this cable protection pipe, can below being lower than the allowable tension of cable, lay for the optical cable of external diameter 14.5mm is introduced.
[embodiment A-3] uses the bellows of the internal diameter 36mm, the wall thickness 1mm that are made by high density polyethylene (HDPE) as the protection tube main body; its stainless steel of axially mixing three external diameter 1mm that uniformly-spaced distribute on circumference is twisted thread as being subjected to draw piece in the periphery upper edge of this protection tube main body; the low density polyethylene (LDPE) of lining wall thickness 0.7mm produces the cable protection pipe on its periphery.In advance the internal diameter 250mm, the length 100m that are installed in supporter 40 as shown in Figure 5 with 1mm at interval with sewer pipe in, introduce with the method that Fig. 4 A～Fig. 4 C is such, and it be supported on the supporter.After introducing is finished, be subjected to apply tension force on the draw piece, remove cable protection pipe sagging after, will be fixed on the inwall of hand hole by the draw piece two ends.The cable protection pipe of being laid is not seen sagging between supporter, lays directly as straight line.When being laid in the cable protection pipe, can below being lower than the permission tension force of cable, lay for the optical cable of external diameter 19mm is introduced.
[embodiment A-4] uses the bellows of the internal diameter 22mm, the wall thickness 1mm that are made by high density polyethylene (HDPE) as the protection tube main body; twist thread as being subjected to draw piece along the stainless steel of axially mixing 1 external diameter 2mm of this protection tube main body; the high density polyethylene (HDPE) of lining wall thickness 0.5mm produces the cable protection pipe on its periphery.In the sewer pipe of internal diameter 250mm, the length 100m of the supporter 40 that extrusion molding such shown in Fig. 8 A, Fig. 8 B is installed at interval with 1mm, the cable protection pipe is pressed in the supporter in advance with manipulator shown in Figure 7.After laying by manipulator, be subjected to apply tension force on the draw piece, remove cable protection pipe sagging after, will be fixed on the inwall of hand hole by the draw piece two ends.The cable protection pipe of being laid is not seen sagging between supporter, can lay directly as straight line.When the optical cable introducing with external diameter 12mm is laid in the cable protection pipe, can below being lower than the allowable tension of cable, lay.
[embodiment A-5] is except that mixing the high density polyethylene (HDPE) bellows of 0.2 part of weight capsicim as the protection tube main body with 100 parts of weight of relative high density polyethylene (HDPE); make the cable protection pipe in the same manner with embodiment 2; lay test in the same manner with embodiment 2; the result can carry out capsicim does not have the laying of baneful influence ground cable protection pipe to laying the operator, and the introducing of optical cable also can similarly be carried out.And the cable protection pipe that will mix the cable protection pipe of above-mentioned Ratproof agent and not mix the same size of Ratproof agent cuts out 50cm respectively, is that mouse is put into 1m with 5 wista then
3Case in closed 3 days.The result observes examination and stings the wound of degree mixing on the cable protection pipe of Ratproof agent, in contrast, do not mix the wound that the cable protection pipe of Ratproof agent can be from the pipe inner face to the outside, damage the function as the cable protection pipe.
[Comparative examples A-1] by the bellows of internal diameter 22mm, the wall thickness 1mm of high density polyethylene (HDPE) system as the cable pipe; this cable protection pipe is incorporated in advance with 1m is equipped with at interval in the sewer pipe of internal diameter 250mm, length 100m of supporter, and it is supported on the supporter.The cable protection pipe of being laid does not produce sagging between supporter, the optical cable of external diameter 12mm is introduced being laid in this cable protection pipe by its former state.The result is on the way because of introducing overtension, and can not lay.
[Embodiment B-1] equally spaced mixed the stainless steel of external diameter 2mm and twisted thread two, as being subjected to draw piece in the outside by the bellows of internal diameter 36mm, the wall thickness 1mm of high density polyethylene (HDPE) system at circumferencial direction.As overcoat, the cable protection pipe is used interior pipe as setting up with the low density polyethylene (LDPE) of lining wall thickness 0.7mm on the periphery.In the outer tube of internal diameter 300mm, the length 250m of the interior pipe that is equipped with nine external diameter 50mm in advance, introduce above-mentioned three when being subjected to draw piece and set up pulling at interior pipe (see figure 9).At this moment tensile stress is 1.5KN, and the remaining extensibility of the interior pipe of introducing after 2 hours is below 1%.
[Embodiment B-2] is in the outside by the bellows of internal diameter 28mm, the wall thickness 1mm of high density polyethylene (HDPE) system; twist thread as being subjected to draw piece with the stainless steel that equally spaced disposes two external diameter 2mm at circumferencial direction, use interior pipe as the cable protection pipe of overcoat as setting up with the low density polyethylene (LDPE) of lining wall thickness 0.5mm on the periphery.In the outer tube of internal diameter 100mm, the length 250m of the optical cable that is equipped with 15 external diameter 14.5mm in advance, be subjected to draw piece to introduce above-mentioned setting up to use interior Guan Yigen by pulling at.At this moment tensile stress is 1.0KN, and the remaining extensibility of the interior pipe of introducing after 2 hours is below 1%.
[comparative example B-1] in the outer tube of internal diameter 300mm, the length 250m of the interior pipe of having laid nine external diameter 50mm, introduces three by the internal diameter 36mm of high density polyethylene (HDPE) system, the bellows of wall thickness 1mm in advance simultaneously.At this moment tensile stress is 1.5KN, and the extensibility of introducing the instantaneous interior pipe in back is that the remaining extensibility after 70%, 2 hour also has 40%, therefore has the integrity problem as protection tube.
[comparative example B-2] introduces by one of the bellows of internal diameter 28mm, the wall thickness 1mm of high density polyethylene (HDPE) system in advance in the outer tube of internal diameter 100mm, the length 250m of the optical cable that is equipped with 15 external diameter 14.5mm.At this moment tensile stress is 1.0KN, and the extensibility of introducing the instantaneous interior pipe in back is that the remaining extensibility after 50%, 2 hour also has 20%, has the integrity problem as protection tube.
According to above-mentioned cable protection pipe of the present invention, can be by under sagging and state that elongation is little, laying being subjected to apply on the draw piece tension force.Therefore, when making this cable protection pipe support be laid on the supporter that is provided with appropriate intervals, can reduce on protection tube between supporter, produce sagging, in the cable protection pipe after can laying the optical cable introducing without barrier.In addition, when managing in the introducing in the outer tube that has set,, the radical of the interior pipe of Guan Youke laying is outside increased owing to use this cable protection Guan Erneng to make the elongation not spot laying basically of interior pipe.In addition, contain Ratproof agent and in overcoat, do not contain the formation of Ratproof agent, so both can prevent the evil of damaged by rats, the person that can not make the manufacturing operation again and lay the harmful effect that the operator is subjected to Ratproof agent owing to adopt at tube body.
[Embodiment C-1] the straight tube of the internal diameter 28mm of the high density polyethylene (HDPE) system of making, wall thickness 4mm as protection tube 12; on its outside the stainless steel of two external diameter 2mm is being twisted thread (fracture strength 3.5KN) longitudinally to fit in the circumferencial direction compartment of terrain on its outside as being subjected to draw piece 14; on its periphery, cover and be integral, make cable protection pipe 10 with the overcoat 16 of the wall thickness 0.6mm of low density polyethylene (LDPE) system.These cable protection pipe 10 usefulness non-excavating propelling methods are introduced laying 100m.
Its result, the extensibility of cable protection pipe 10 is below 1%.
In addition, this cable protection pipe 10 needs 2m because of can be flexible poor so arrive the length of the peristome of shaft 102.
[Embodiment C-2] the bellows of the internal diameter 36mm of high density polyethylene (HDPE), wall thickness 1mm as protection tube main body 12; on its outside, the stainless steel of two external diameter 2mm is twisted thread (fracture strength 3.5KN) longitudinally to dispose in the circumferencial direction compartment of terrain as being subjected to draw piece 14; on its periphery, cover and be integral, make cable protection pipe 10 as shown in figure 14 with the overcoat 16 of the wall thickness 0.8mm of low density polyethylene (LDPE) system.These cable protection pipe 10 usefulness non-excavating propelling methods are introduced laying 100m.
Its result, the extensibility of cable protection pipe 10 is below 1%.
This cable protection pipe 10 can be flexible good, even when length 1m, arrive also operation easily of shaft.
[comparative example C-1] installs clip in the end of the pipe of internal diameter 28mm, the wall thickness 4mm of high density polyethylene (HDPE) system, introduces 100m with the non-excavating propulsion method then and lays, and pipeline has stretched 20%.Arrive shaft length and need 2m.
[comparative example C-2] installs clip in the end of the bellows of internal diameter 36mm, the wall thickness 1mm of high density polyethylene (HDPE) system, lays pipe breakage when introducing 60m then with the non-excavating method.
Claims (17)
1. a cable protection pipe is characterized in that: mix along its longitudinal direction in plastic protection tube external side of main body and be subjected to draw piece, make to be subjected to draw piece and above-mentioned protection tube main body to form one.
2. cable protection pipe is characterized in that: vertically mix along it in plastic protection tube external side of main body and be subjected to draw piece, make at the overcoat of its outside lining plastics to be subjected to draw piece and above-mentioned protection tube main body formation one.
3. cable protection pipe according to claim 1 and 2 is characterized in that: make many be subjected to draw piece along the circumferencial direction of above-mentioned protection tube main body basically uniformly-spaced to be configured in the protection tube external side of main body.
4. according to claim 2 or 3 described cable protection pipes, it is characterized in that: above-mentioned protection tube main body and overcoat do not fuse.
5. according to any described cable protection pipe in the claim 2 to 4, it is characterized in that: above-mentioned protection tube main body is a high density polyethylene (HDPE) system, and overcoat is a low density polyethylene (LDPE) system.
6. according to any described cable protection pipe in the claim 2 to 5; it is characterized in that: the position that is enclosed within the tension part outward forms the shape of heaving laterally to stride across the mode that is subjected to draw piece, thereby stops the above-mentioned draw piece that is subjected to along the circumferential direction to move relative to above-mentioned protection tube main body.
7. according to any described cable protection pipe in the claim 2 to 6, it is characterized in that: protection tube is made by the plastics that contain Ratproof agent, and overcoat is made by the plastics that do not contain Ratproof agent.
8. according to any described cable protection pipe in the claim 1 to 7, it is characterized in that: the protection tube main body is a bellows.
9. cable protection pipe according to claim 8; it is characterized in that: the protection tube main body is made of bellows; be enclosed within outward on the position of tension part and form the shape of heaving laterally, and the above-mentioned outer trough portion position that is enclosed within above-mentioned bellows is to enter this paddy portion and formed by the mode more than the outer peripheral face half cycle of draw piece to stride across the mode that is subjected to draw piece.
10. cable protection pipe according to claim 8; it is characterized in that: the protection tube main body is made of bellows; be enclosed within outward on the position of tension part and form the shape of heaving laterally, and the above-mentioned outer paddy portion position that is enclosed within above-mentioned bellows does not enter in this paddy portion to stride across the mode that is subjected to draw piece.
11. the laying method of a cable protection pipe; it is characterized in that: make any described cable protection pipe in the claim 1～10; with the mode support that can be along the longitudinal movement be laid on across appropriate intervals be arranged on cable and lay on a plurality of supporters on the route, the draw piece that is subjected to of aforementioned cable protection pipe is fixed being subjected to draw piece to apply the two ends that are laid route under the state of tension force to this.
12. the laying method of a cable protection pipe; it is characterized in that: make any described cable protection pipe in the claim 1～10; with the mode support that can be along the longitudinal movement be laid on across appropriate intervals be arranged on a plurality of supporters at the top in the sewer pipe; to be fixed on the both end sides of above-mentioned sewer pipe by draw piece, tension part, the draw piece that is subjected to of above-mentioned cable protection pipe is fixed by this tension part applied under the state of tension force by draw piece.
13. method of introducing the cable protection pipe; it is characterized in that: in the method that interior pipe is incorporated in the outer tube; each described cable protection pipe is incorporated into described cable protection pipe in the above-mentioned outer tube by draw piece as interior pipe in the use claim 1～9 by pulling at.
14. a method of introducing cable is characterized in that: built on stilts in advance lay cables protection tube, cable is introduced in the cable protection pipe.
15. a method of introducing cable is characterized in that:, cable is incorporated in this cable protection pipe with the built on stilts in advance laying of the cable protection pipe described in any in the claim 1～9.
16. a method of introducing cable is characterized in that: the built on stilts in advance cable protection pipe that has worn interconnection of laying, above-mentioned interconnection is connected with cable, above-mentioned interconnection is incorporated into cable in the above-mentioned cable protection pipe by stretching.
17. pipe layout method of utilizing the non-excavating propulsion method; in ground, get out the pipe laying in advance and use the hole; lay with in the hole by pipe being incorporated into this pipe again; it is characterized in that: utilize any described cable protection pipe in the claim 1～10, traction is subjected to draw piece when carrying out above-mentioned introducing operation.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001122474 | 2001-04-20 | ||
| JP122474/2001 | 2001-04-20 | ||
| JP2002024990A JP2003230220A (en) | 2002-02-01 | 2002-02-01 | Method for aerial wiring of cable |
| JP025471/2002 | 2002-02-01 | ||
| JP2002025471A JP2003009328A (en) | 2001-04-20 | 2002-02-01 | Cable-protecting tube and laying method and drawing-in method therefor |
| JP024990/2002 | 2002-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1407679A true CN1407679A (en) | 2003-04-02 |
Family
ID=27346574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02125195A Pending CN1407679A (en) | 2001-04-20 | 2002-04-19 | Cable protective pipe, Method for laying and leading it |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20020082414A (en) |
| CN (1) | CN1407679A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100499302C (en) * | 2007-07-26 | 2009-06-10 | 北京优通泰达电气新技术发展有限公司 | Method for microtubule reconstruction of communication pipe |
| CN101661142B (en) * | 2009-09-25 | 2011-08-17 | 上海晓宝增强塑料有限公司 | Gopher protected reinforcement yarn for optical cable and preparation method thereof |
| CN102326017A (en) * | 2008-12-22 | 2012-01-18 | 尼尔斯.桑德柳斯 | Tool and method for transfer of tubes |
| CN107076585A (en) * | 2015-08-27 | 2017-08-18 | 新日铁住金工程技术株式会社 | Cable and the introduction method that incipient extension strain is imported to optical fiber |
| CN110208919A (en) * | 2019-07-03 | 2019-09-06 | 山东承坤信息科技有限公司 | A kind of 5G communications optical cable |
| CN110333586A (en) * | 2019-07-03 | 2019-10-15 | 高明 | A kind of 5G communication chief Shouguang cable |
| CN111306370A (en) * | 2020-03-23 | 2020-06-19 | 海南朗迪机电设备工程有限公司 | Electric-hydraulic-pneumatic integrated pipeline |
| CN117134263A (en) * | 2023-10-27 | 2023-11-28 | 国电投山西能源服务有限公司 | Cable trench penetrating device and using method thereof |
-
2002
- 2002-04-18 KR KR1020020021152A patent/KR20020082414A/en not_active Application Discontinuation
- 2002-04-19 CN CN02125195A patent/CN1407679A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100499302C (en) * | 2007-07-26 | 2009-06-10 | 北京优通泰达电气新技术发展有限公司 | Method for microtubule reconstruction of communication pipe |
| CN102326017A (en) * | 2008-12-22 | 2012-01-18 | 尼尔斯.桑德柳斯 | Tool and method for transfer of tubes |
| CN102326017B (en) * | 2008-12-22 | 2013-08-28 | 尼尔斯.桑德柳斯 | Tool and method for transfer of tubes |
| CN101661142B (en) * | 2009-09-25 | 2011-08-17 | 上海晓宝增强塑料有限公司 | Gopher protected reinforcement yarn for optical cable and preparation method thereof |
| CN107076585A (en) * | 2015-08-27 | 2017-08-18 | 新日铁住金工程技术株式会社 | Cable and the introduction method that incipient extension strain is imported to optical fiber |
| CN107076585B (en) * | 2015-08-27 | 2020-03-13 | 新日铁住金工程技术株式会社 | Cable and method for introducing initial tensile strain into optical fiber |
| CN110208919A (en) * | 2019-07-03 | 2019-09-06 | 山东承坤信息科技有限公司 | A kind of 5G communications optical cable |
| CN110333586A (en) * | 2019-07-03 | 2019-10-15 | 高明 | A kind of 5G communication chief Shouguang cable |
| CN111306370A (en) * | 2020-03-23 | 2020-06-19 | 海南朗迪机电设备工程有限公司 | Electric-hydraulic-pneumatic integrated pipeline |
| CN117134263A (en) * | 2023-10-27 | 2023-11-28 | 国电投山西能源服务有限公司 | Cable trench penetrating device and using method thereof |
| CN117134263B (en) * | 2023-10-27 | 2024-01-23 | 国电投山西能源服务有限公司 | Cable trench penetrating device and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20020082414A (en) | 2002-10-31 |
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