CN109274057A - A kind of the cable duct structure and its construction method of prefabricated - Google Patents
A kind of the cable duct structure and its construction method of prefabricated Download PDFInfo
- Publication number
- CN109274057A CN109274057A CN201811301966.3A CN201811301966A CN109274057A CN 109274057 A CN109274057 A CN 109274057A CN 201811301966 A CN201811301966 A CN 201811301966A CN 109274057 A CN109274057 A CN 109274057A
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- Prior art keywords
- bracket
- cable duct
- grounding flat
- flat steel
- installation part
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses the cable duct structures and its construction method of a kind of prefabricated, including brick body, the ditch body being arranged between brick body, the bracket for being fixed on ditch body sidewall, several cable duct grounding flat steels, bracket grounding flat steel are arranged in the side wall of ditch body, wherein several cable duct grounding flat steels are uniformly distributed along the length direction of ditch body, several bracket grounding flat steels are uniformly distributed also along the length direction of ditch body, and cable duct grounding flat steel is located at the top of bracket grounding flat steel；The two sides on ditch body top are respectively provided with outwardly extending step surface；It further include that the precast concrete to match with ditch body bears down on one, the opposite sides that precast concrete bears down on one is individually positioned on two step surfaces, and precast concrete, which bears down on one, to be fixedly connected between brick body by cement mortar.The present invention is to solve the problems, such as that cast in situs cap for cable duct needs curing period while will lead to the purpose that planarization is bad, realizes raising construction efficiency, improves flatness of bearing down on one in the prior art.
Description
Technical field
The present invention relates to cable duct fields, and in particular to a kind of the cable duct structure and its construction method of prefabricated.
Background technique
Cable duct is the underground piping to lay and replace electric power or telecommunication cable facility, and by cabling facility
Building enclosure, have the pipeline configurations form such as rectangle, circle, arch.There are commonly underground electricity for cable duct in domestic power transmission engineering
Cable ditch, cable tunnel, cable direct-burried, cable pipe, cable tunnel and cable direct-burried use universal.Power transformation engineering cable duct is normal
There are cable tunnel, overground cable ditch, buried cable ditch.Cable tunnel is used for power cable, and ground, buried cable ditch are used for
Control cable.Sometimes cable pipe is used in part.Recent years, and following substation begin to use finished product overground cable groove.
One is inorganic concrete cover is buckled on inorganic concrete pit box, the decorative pattern on cover board has not of the same race finished product overground cable groove
Class, another is to buckle zinc-plated steel deck-plate on shape steel construction slot box.
Currently, become, in switchgear house 90% or more brick cap for cable duct using cast-type, but due to the technique of construction without
The phenomenon that method reaches complete level requirements, is uneven so as to cause the cover board of cable duct.And the scene for use of bearing down on one is poured
It builds and needs curing period, will affect the period of construction.Meanwhile brick cable duct will first plaster, and could install cable duct
It is grounded band iron, meanwhile, ground connection band iron is easy the weldering for making cable furrow bank will appear black ash using welding manner, and it is whole to influence cable duct
The visual effect of body.
Summary of the invention
The purpose of the present invention is to provide the cable duct structures and its construction method of a kind of prefabricated, to solve the prior art
Middle cast in situs cap for cable duct needs curing period while will lead to the bad problem of planarization, realizes and improves construction efficiency, mentions
The purpose of high-pressure jack flatness.
The present invention is achieved through the following technical solutions:
A kind of cable duct structure of prefabricated including brick body, the ditch body being arranged between brick body, is fixed on ditch body sidewall
Several cable duct grounding flat steels, bracket grounding flat steel are arranged in the side wall of bracket, the ditch body, and wherein several cable ducts ground connection is flat
Steel is uniformly distributed along the length direction of ditch body, several bracket grounding flat steels are uniformly distributed also along the length direction of ditch body,
The cable duct grounding flat steel is located at the top of bracket grounding flat steel；The two sides on ditch body top are respectively provided with outwardly extending
Terrace；It further include that the precast concrete to match with the ditch body bears down on one, the opposite sides difference that the precast concrete bears down on one
It is placed on two step surfaces, the precast concrete, which bears down on one, to be fixedly connected between brick body by cement mortar.
Curing period is needed for cast in situs cap for cable duct in the prior art while will lead to that planarization is bad to ask
Topic, present invention firstly provides a kind of cable duct structures of prefabricated, including brick body, the ditch body being arranged between brick body, are fixed on
Several cable duct grounding flat steels, bracket grounding flat steel, cable duct grounding flat steel is arranged in the side wall of ditch body in the bracket of ditch body sidewall
Positioned at the top of bracket grounding flat steel, so that cable duct grounding flat steel is not interfere with each other independently respectively with bracket grounding flat steel.Wherein
Cable duct grounding flat steel is uniformly distributed along the length direction of ditch body, for carrying out ground connection drainage inside cable duct ditch body, is played
The purpose that lightning-protection surge electricity is altered, several bracket grounding flat steels are uniformly distributed also along the length direction of ditch body, convenient for uniform
Setting for carrying the bracket of cable, and play by bracket be grounded effect.The two sides on ditch body top are respectively provided with to extension
The step surface stretched, step surface bear down on one for placing precast concrete.Precast concrete bears down on one, as the term suggests by concrete prefabricated
It forms, for specific cable duct, size shape is after designing with regard to it has been determined that can be pressed in factory at this time
Top it is prefabricated, by concrete shift to an earlier date it is prefabricated bear down on one, formed precast concrete bear down on one.The opposite sides that precast concrete bears down on one
It is individually positioned on two step surfaces, so that precast concrete bears down on one from top completely to being covered and protected inside ditch body
Shield, while two sides stable and firm can be attached by cement mortar between brick body.This structure is not necessarily to curing period, greatly
Improve construction efficiency, as long as while the construction of ditch body carried out according to design size, after capable of guaranteeing to bear down on one and being installed
Integral smoothness is good, lacks to thoroughly solve existing cast-in-place construction technique and be unable to reach inherent technology smooth enough
It falls into.
Preferably, the cable duct grounding flat steel, bracket grounding flat steel are spaced apart on the length direction of ditch body, each
It is fixedly connected with an installation part on bracket grounding flat steel, is conducted between installation part and corresponding bracket grounding flat steel, the peace
Several brackets are evenly distributed in piece installing up and down；The installation part is not contacted with the cable duct grounding flat steel of two sides.It is the length in ditch body
It spends on direction, each installation part is all located between two neighboring cable duct grounding flat steel, and installation part is fixed on bracket grounding flat steel
On, and conducted between installation part and corresponding bracket grounding flat steel, so that it is guaranteed that bracket, installation part, bracket grounding flat steel are equal
It conducts, it is ensured that earthing effect is stablized.Installation part is not contacted with the cable duct grounding flat steel of two sides simultaneously, is avoided under fortuitous event
The electric current of leakage is run helter-skelter the cable for influencing and working normally originally, it is ensured that ditch body and bracket respectively between be independently grounded.
Preferably, the installation part is fashioned iron, and waterproof material is filled between installation part and ditch body sidewall.By fashioned iron as peace
Piece installing is such as attached by common bolt or anchoring piece convenient for the connection between ditch body sidewall, while being installed
Waterproof material is filled between part and ditch body sidewall, avoids underground immersion corrosion installation part, the electrical stability of installation part is interfered,
Ensure the stability in use of installation part.
Preferably, the waterproof material is polyurethane.Polyurethane injected by way of greasing installation part and ditch body sidewall it
Between gap in, can effectively obstruct underground water invasion, while long-term guaranteeing that insulation is stablized.In addition, polyurethane is solid
Still there is certain ductility after change, therefore the locking technical effect of vibration damping effectively can also be played to installation part.
Preferably, two sections of concentric arc grooves are arranged in the installation part surface, and the opposite sides of the bracket fixes one
Block extension board, a bolt is passed through on the extension board, and two bolts are respectively inserted in one section of arc groove, cover on the bolt
If locknut.Bracket in the prior art in cable duct all be fixed setting, setting direction be so that bracket it is upper
Surface is parallel to the bottom of trench of cable duct, and there is no problem in straight ditch body section for this structure, and cable is lain on bracket,
However at the end of cable incoming-outgoing cable duct, cable needs to traverse into or out ditch body, and the cable at these positions necessarily has arc
Degree tilt, therefore even if the inclined degree of cable is also different on adjacent or neighbouring two brackets in left and right
, which results in the end of cable incoming-outgoing cable duct, support and carrying, electricity can not be provided to cable by existing bracket
Cable extreme portions are in vacant state, and stability is extremely low.For this purpose, two sections of concentric circular arcs are arranged on installation part surface in this programme
Slot, and one piece of extension board is fixed in the opposite sides of bracket, a bolt is passed through on extension board, two bolts are respectively inserted in
In one section of arc groove, and it is fixed by locknut.This programme only needs to unscrew locknut, can be realized and turns to bracket
Dynamic, the rotation of bracket is carried out around the center of circle that two sections of arc grooves share, and two bolts are always in arc groove, so that for every
For each bracket on a installation part, can independent progress angle adjustment so that its upper surface adjust to it is inclined
The angle that cable matches, so that the upper surface of each bracket can adequately be contacted with cable, is adequately right
Cable is carried, and the end of cable incoming-outgoing cable duct in the prior art is solved with this, can not be by existing bracket to cable
The problem of support is with carrying is provided, the stability of the end of cable incoming-outgoing cable duct is greatly improved, has compared to the prior art
There are substantive distinguishing features outstanding and significant progress.
The construction method of cable duct structure, comprising the following steps:
(a) heap brick masonary makes to form ditch body and step surface between brick body；Simultaneously according to the design ruler of ditch body and step surface
It is very little, carry out the manufacture that precast concrete bears down on one；
(b) cable duct grounding flat steel is installed, later in the lower section mounting bracket grounding flat steel of cable duct grounding flat steel, by institute
There are cable duct grounding flat steel, bracket grounding flat steel ground connection；
(c) weld installation part on bracket grounding flat steel, guarantee in installation process installation part not with any one cable duct
Grounding flat steel contact；Several uniformly distributed brackets up and down are installed on mountings, so that bracket is electrically connected with installation part；
(d) cement mortar is spread on precast concrete surface of bearing down on one, precast concrete is beared down on one and is placed on the step surface of two sides
Above, it is fixedly connected by cement mortar and brick body.
Preferably, bracket is installed by the following method in step (c): being placed with one piece of extension board on bracket pacifying first
Piece installing surface makes one section of arc groove of a threaded hole face on extension board, and bolt is passed through the threaded hole, bolt is made to support
In corresponding arc groove, the corresponding locknut of the bolt is screwed on, keep locknut painstaking but is not tightened；Rotating bracket later,
So that another piece of extension board on bracket is gone to the top of another section of arc groove, bolt is equally passed through to the spiral shell on another piece of extension board
Pit is inserted in locknut later；Unitary rotation bracket again so that the angle of the upper surface of bracket reaches design requirement, then is twisted
Locknut on tight two bolts.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention a kind of the cable duct structure and its construction method of prefabricated, the opposite sides that precast concrete bears down on one point
It is not placed on two step surfaces, so that precast concrete bears down on one from top completely to being covered and protected inside ditch body
Shield, while two sides stable and firm can be attached by cement mortar between brick body, be not necessarily to curing period, greatly improve
Construction efficiency, as long as while the construction of ditch body carried out according to design size, can guarantee to bear down on one be installed after it is whole flat
Whole degree is good, so that thoroughly solving existing cast-in-place construction technique is unable to reach inherent technology defect smooth enough.
2, the present invention a kind of the cable duct structure and its construction method of prefabricated, it is only necessary to unscrew locknut, can be realized
Rotation to bracket, the rotation of bracket are carried out around the center of circle that two sections of arc grooves share, two bolts always in arc groove, thus
So that for each bracket on each installation part, can independent progress angle adjustment so that its upper surface adjusts
To the angle to match with inclined cable, so that the upper surface of each bracket can adequately be connect with cable
Touching adequately carries cable, and the end of cable incoming-outgoing cable duct in the prior art is solved with this, can not be by existing
Bracket provides the problem of support is with carrying to cable, greatly improves the stability of the end of cable incoming-outgoing cable duct, compared to
The prior art has substantive distinguishing features outstanding and significant progress.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the cross-sectional view of the specific embodiment of the invention；
Fig. 2 is the structural schematic diagram of ditch body in the specific embodiment of the invention；
Fig. 3 is that ditch body loads onto the structural schematic diagram after concrete soil pressure in the specific embodiment of the invention；
Fig. 4 is the connection schematic diagram of installation part in the specific embodiment of the invention；
Fig. 5 is the partial enlarged view in Fig. 4 at A；
Fig. 6 is the front view of bracket in the specific embodiment of the invention.
Label and corresponding parts title in attached drawing:
1- ditch body, 2- bracket, 3- cable duct grounding flat steel, 4- bracket grounding flat steel, 5- step surface, 6- concrete soil pressure
Top, 7- brick body, 8- installation part, 9- waterproof material, 10- arc groove, 11- extension board, 12- bolt, 13- locknut.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1:
The cable duct structure of a kind of prefabricated as shown in Figure 1 to Figure 3, including brick body 7, the ditch being arranged between brick body 7
Body 1, the bracket 2 for being fixed on 1 side wall of ditch body, which is characterized in that several cable duct grounding flat steels 3 of side wall setting of the ditch body 1,
Bracket grounding flat steel 4, wherein several cable duct grounding flat steels 3 are uniformly distributed along the length direction of ditch body 1, several brackets
Grounding flat steel 4 is uniformly distributed also along the length direction of ditch body 1, and the cable duct grounding flat steel 3 is located at bracket grounding flat steel 4
Top；The two sides on 1 top of ditch body are respectively provided with outwardly extending step surface 5；Further include match with the ditch body 1 it is prefabricated
Concrete bears down on one 6, and bear down on one 6 opposite sides of the precast concrete is individually positioned on two step surfaces 5, the concrete
It is fixedly connected between soil pressure top 6 and brick body 7 by cement mortar.
Embodiment 2:
A kind of cable duct structure of prefabricated as shown in Figures 1 to 6, on the basis of embodiment 1, the cable duct connects
Ground band steel 3, bracket grounding flat steel 4 are spaced apart on the length direction of ditch body 1, are fixedly connected on each bracket grounding flat steel 4
One installation part 8 conducts between installation part 8 and corresponding bracket grounding flat steel 4, uniformly distributed several up and down on the installation part 8
Bracket 2；The installation part 8 is not contacted with the cable duct grounding flat steel 3 of two sides.The installation part 8 is fashioned iron, installation part 8 and ditch
Waterproof material 9 is filled between 1 side wall of body.The waterproof material 9 is polyurethane.Two sections of concentric circular arcs are arranged in 8 surface of installation part
Slot 10, the opposite sides of the bracket 2 fix one piece of extension board 11, pass through a bolt 12 on the extension board 11, and two
Bolt 12 is respectively inserted in one section of arc groove 10, is arranged locknut 13 on the bolt 12.
The construction method of the present embodiment is as follows: (a) heap brick masonary 7, makes to form ditch body 1 and step surface 5 between brick body 7；Together
When according to the design size of ditch body 1 and step surface 5, carry out precast concrete bear down on one 6 manufacture；(b) installation cable duct ground connection is flat
Steel 3, later in the lower section mounting bracket grounding flat steel 4 of cable duct grounding flat steel 3, by all cable duct grounding flat steels 3, branch bridge joint
Ground band steel 4 is grounded；(c) installation part 8 is welded on bracket grounding flat steel 4, guarantee in installation process installation part 8 not with any one
Cable duct grounding flat steel 3 contacts；Several uniformly distributed brackets 2 up and down are installed on installation part 8, so that bracket 2 is electrically connected with installation part 8
It connects；Wherein, bracket 2 is installed by the following method: one piece of extension board 11 on bracket 2 being placed on 8 surface of installation part first, is made
Bolt 12 is passed through the threaded hole, bolt 12 is made to support right by one section of arc groove 10 of a threaded hole face on extension board 11
In the arc groove 10 answered, the corresponding locknut 13 of bolt 12 is screwed on, keep locknut 13 painstaking but is not tightened；It rotates later
Bracket 2 makes another piece of extension board 11 on bracket 2 go to the top of another section of arc groove 10, equally passes through bolt 12 another
Threaded hole on block extension board 11 is inserted in locknut 13 later；Unitary rotation bracket 2 again, so that the angle of the upper surface of bracket 2
Degree reaches design requirement, then tightens the locknut 13 on two bolts 12；(d) water is spread on precast concrete 6 surfaces of bearing down on one
Precast concrete is beared down on one and 6 is placed on the step surface 5 of two sides, is fixedly connected by cement mortar and brick body 7 by cement mortar.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of cable duct structure of prefabricated including brick body (7), the ditch body (1) being arranged between brick body (7), is fixed on ditch
The bracket (2) of body (1) side wall, which is characterized in that several cable duct grounding flat steels (3), bracket are arranged in the side wall of the ditch body (1)
Grounding flat steel (4), wherein several cable duct grounding flat steels (3) are uniformly distributed along the length direction of ditch body (1), several branch
Frame grounding flat steel (4) is uniformly distributed also along the length direction of ditch body (1), and the cable duct grounding flat steel (3) is located at branch bridge joint
The top of ground band steel (4)；The two sides on ditch body (1) top are respectively provided with outwardly extending step surface (5)；Further include and the ditch
The precast concrete that body (1) matches bears down on one (6), and the bear down on one opposite sides of (6) of the precast concrete is individually positioned in two
On step surface (5), the precast concrete, which bears down on one, to be fixedly connected between (6) and brick body (7) by cement mortar.
2. a kind of cable duct structure of prefabricated according to claim 1, which is characterized in that the cable duct grounding flat steel
(3), bracket grounding flat steel (4) is spaced apart on the length direction of ditch body (1), fixed on each bracket grounding flat steel (4) to connect
Connect an installation part (8), conducted between installation part (8) and corresponding bracket grounding flat steel (4), on the installation part (8) on
Uniformly distributed several brackets (2) down；The installation part (8) does not contact with the cable duct grounding flat steel (3) of two sides.
3. a kind of cable duct structure of prefabricated according to claim 2, which is characterized in that the installation part (8) is type
Steel fills waterproof material (9) between installation part (8) and ditch body (1) side wall.
4. a kind of cable duct structure of prefabricated according to claim 3, which is characterized in that the waterproof material (9) is poly-
Urethane.
5. a kind of cable duct structure of prefabricated according to claim 2, which is characterized in that installation part (8) surface
Two sections of concentric arc grooves (10) are set, and the opposite sides of the bracket (2) fixes one piece of extension board (11), the extension board
(11) across a bolt (12) on, two bolts (12) are respectively inserted in one section of arc groove (10), on the bolt (12)
It is arranged locknut (13).
6. the construction method based on the cable duct structure any in claim 1 to 5, which is characterized in that including following step
It is rapid:
(a) heap brick masonary (7) make to form ditch body (1) and step surface (5) between brick body (7)；Simultaneously according to ditch body (1) and step
The design size in face (5) carries out precast concrete and bears down on one the manufacture of (6)；
(b) cable duct grounding flat steel (3) are installed, later in the lower section mounting bracket grounding flat steel of cable duct grounding flat steel (3)
(4), all cable duct grounding flat steels (3), bracket grounding flat steel (4) are grounded；
(c) installation part (8) are welded on bracket grounding flat steel (4), guarantees that installation part (8) are not electric with any one in installation process
Cable ditch grounding flat steel (3) contact；Several uniformly distributed brackets (2) up and down are installed on installation part (8), so that bracket (2) and installation
Part (8) electrical connection；
(d) spread cement mortar on precast concrete (6) surface of bearing down on one, by precast concrete bear down on one (6) be placed on the steps of two sides
It is fixedly connected on face (5), by cement mortar and brick body (7).
7. the construction method of cable duct structure according to claim 6, which is characterized in that bracket (2) passes through in step (c)
Following method installation: one piece of extension board (11) on bracket (2) is placed on installation part (8) surface first, makes extension board (11)
On one section of arc groove (10) of a threaded hole face, by bolt (12) pass through the threaded hole, make bolt (12) support in correspondence
Arc groove (10) in, screw on the corresponding locknut (13) of the bolt (12), keep locknut (13) painstaking but do not tighten；It
Rotating bracket (2) afterwards make another piece of extension board (11) on bracket (2) go to the top of another section of arc groove (10), equally will
Bolt (12) passes through the threaded hole on another piece of extension board (11), is inserted in locknut (13) later；Unitary rotation bracket again
(2), so that the angle of the upper surface of bracket (2) reaches design requirement, then the locknut (13) on two bolts (12) is tightened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301966.3A CN109274057A (en) | 2018-11-02 | 2018-11-02 | A kind of the cable duct structure and its construction method of prefabricated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301966.3A CN109274057A (en) | 2018-11-02 | 2018-11-02 | A kind of the cable duct structure and its construction method of prefabricated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109274057A true CN109274057A (en) | 2019-01-25 |
Family
ID=65191244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811301966.3A Pending CN109274057A (en) | 2018-11-02 | 2018-11-02 | A kind of the cable duct structure and its construction method of prefabricated |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835263A (en) * | 2014-04-01 | 2014-06-04 | 卞翔春 | Prefabricated ditch |
| CN103968154A (en) * | 2013-01-29 | 2014-08-06 | 江苏华彤新能源科技有限公司 | Mounting frame structure for cable bridge |
| CN204290173U (en) * | 2015-01-06 | 2015-04-22 | 铜陵新能建电安全技术有限公司 | A kind of adjustable cable corner carriage |
| CN107332188A (en) * | 2017-07-24 | 2017-11-07 | 福建省电力勘测设计院 | Power transmission sequence L-type assembly type cable slot and its method for paving |
| CN107332187A (en) * | 2017-07-24 | 2017-11-07 | 福建省电力勘测设计院 | Power transmission sequence matrix assembly type cable slot and its method for paving |
| CN108457302A (en) * | 2018-03-16 | 2018-08-28 | 中国电建集团福建省电力勘测设计院有限公司 | Bolt splices axis bendable full precast assembly open cut cable tunnel |
-
2018
- 2018-11-02 CN CN201811301966.3A patent/CN109274057A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968154A (en) * | 2013-01-29 | 2014-08-06 | 江苏华彤新能源科技有限公司 | Mounting frame structure for cable bridge |
| CN103835263A (en) * | 2014-04-01 | 2014-06-04 | 卞翔春 | Prefabricated ditch |
| CN204290173U (en) * | 2015-01-06 | 2015-04-22 | 铜陵新能建电安全技术有限公司 | A kind of adjustable cable corner carriage |
| CN107332188A (en) * | 2017-07-24 | 2017-11-07 | 福建省电力勘测设计院 | Power transmission sequence L-type assembly type cable slot and its method for paving |
| CN107332187A (en) * | 2017-07-24 | 2017-11-07 | 福建省电力勘测设计院 | Power transmission sequence matrix assembly type cable slot and its method for paving |
| CN108457302A (en) * | 2018-03-16 | 2018-08-28 | 中国电建集团福建省电力勘测设计院有限公司 | Bolt splices axis bendable full precast assembly open cut cable tunnel |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190125 |
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| RJ01 | Rejection of invention patent application after publication |