CN205839793U - A kind of city integrated piping lane construction outside mould - Google Patents
A kind of city integrated piping lane construction outside mould Download PDFInfo
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- CN205839793U CN205839793U CN201620357763.6U CN201620357763U CN205839793U CN 205839793 U CN205839793 U CN 205839793U CN 201620357763 U CN201620357763 U CN 201620357763U CN 205839793 U CN205839793 U CN 205839793U
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- outside
- truss
- outer side
- piping lane
- side mold
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Abstract
The utility model discloses a kind of city integrated piping lane construction outside mould, location truss is connected including two outer side molds and at least two groups, the described location truss that connects is assembled in two described outer side mold tops, and described outer side mold outer upper is provided with outside truss along its length.By directly mould in vehicle assembled being fixed on construction location according to the size of pipe gallery to be built, carry out assembled outside mould again, directly pouring synthetic piping lane, concrete is directly injected in vehicle assembled between mould and outside mould in space, it is shaped to pipe gallery, mold releasability runs, the formwork error avoiding traditional handicraft is big, the problem of quality control difficulties, have structure relatively easy, easy to operate, group mould precision height, steady quality, the construction period is short, operating expenses is low, the construction infection phase is short and production efficiency advantages of higher.
Description
Technical field
This utility model relates to pipe gallery technical field of construction, particularly relates to a kind of city integrated piping lane construction
Use outside mould.
Background technology
At present, the communal facility such as electric power, communication, water and heat provision, combustion gas, the most buried or independent block ditch is worn
Pipe, for want of unified planning designs, and causes all kinds of pipeline to interlock layout, and each supervisor does things in his own way, meanwhile, to dilatation and maintenance band
It is inconvenient to come.Annual " road slide fastener " frequently makes troubles to urban transportation and people's lives, and " sea is seen in city " threatens especially
People people and the safety of property.
City integrated piping lane construction is in the starting stage, and construction technology is traditional method, and formwork still uses scaffold and wood
Offset plate mode, the consumptions of materials such as formwork error is big, quality control difficulties, the wood glue plate scrapped are big, and environmental effect is big, construction week
Phase is long, and cost of labor is high, and engineering cost is big, and traffic impact is big.
Utility model content
This utility model completes to solve deficiency of the prior art, and the purpose of this utility model is to provide one
Plant city integrated piping lane construction outside mould, by the scale according to pipe gallery to be built by vehicle assembled
Mould is fixed on construction location, then carries out assembled outside mould described herein, directly pours comprehensive by above-mentioned outside mould
Close piping lane, it is to avoid the formwork error of traditional handicraft is big, the problem of quality control difficulties, by installing the assembly that is slidably connected additional, can
To realize outer side mold spacing adjustment action, solve the modulus problem in traditional handicraft, have structure relatively easy, easy to operate,
Organize mould precision height, steady quality, the construction period is short, operating expenses is low, the construction infection phase is short and production efficiency advantages of higher.
The one city integrated piping lane construction outside mould of offer of the present utility model, including two outer side molds and
At least two groups connect location truss, and described connection location truss is assembled in two described outer side mold tops, outside described outer side mold
Top is provided with outside truss along its length.
One of the present utility model city integrated piping lane construction mould component truss it may also is that
Described outer side mold is provided with, with the described location truss link position that is connected, the assembly that is slidably connected, described in be slidably connected group
Part is made up of upper sliding connector and lower slider connector and thrust part, and upper sliding connector is connected location truss even with described
Connect, described in the assembly bottom that is slidably connected be connected with described outer side mold or outside truss.
Connecting truss cross section, location is rectangle truss structure or triangular truss structure or van-type structure, and its length direction has
Adjust section, adjust and be connected between section and connection location truss.
Described outer side mold includes that outside basic templates and outside adjust template, and described outside adjusts template-setup outside described
The top of side basic templates, described outside adjusts template and is connected with the described assembly that is slidably connected.
Described outside truss cross section is rectangle truss structure or triangular truss structure or van-type structure.
Described outer side mold bottom is provided with running gear.
Described running gear includes road wheel and road wheel support, and described road wheel is arranged on by described road wheel support
Bottom described outer side mold and rotatable.
Being provided with auxiliary below described outer side mold and support leading screw, described auxiliary support leading screw can release formula with ground and offset.
The described outer side mold back side is provided with vibrator.
The one city integrated piping lane construction outside mould of offer of the present utility model, including two outer side molds and
At least two groups connect location truss, and described connection location truss is assembled in two described outer side mold tops, outside described outer side mold
Top is provided with outside truss along its length.By the scale according to pipe gallery to be built and size directly by vehicle group
Dress Shi Neimo is fixed on construction location, then carries out assembled outside mould, direct pouring synthetic piping lane, and concrete is directly injected into car
In type assembled between mould and outside mould in space, be shaped to pipe gallery, mold releasability runs, it is to avoid traditional handicraft
Formwork error is big, the problem of quality control difficulties, have that structure is relatively easy, easy to operate, group mould precision height, steady quality,
Construction period is short, operating expenses is low, the construction infection phase is short and production efficiency advantages of higher.
Accompanying drawing explanation
Fig. 1 is the overall structure signal of a kind of city integrated piping lane construction outside mould of this utility model embodiment
Figure；
Fig. 2 is the structural representation of a kind of city integrated piping lane construction outside mould of this utility model embodiment；
Fig. 3 is a kind of city integrated piping lane construction outside mould road wheel structural representation of this utility model embodiment
Figure；
A kind of city integrated piping lane construction of Fig. 4 this utility model embodiment connects the outside truss square of location truss
Shape structural representation；
A kind of city integrated piping lane construction of Fig. 5 this utility model embodiment connects the outside truss three of location truss
Angular structure schematic diagram；
A kind of city integrated piping lane construction of Fig. 6 this utility model embodiment connects the van-type structure of location truss and shows
It is intended to.
The outside truss square of a kind of city integrated piping lane construction outside mould truss of Fig. 7 this utility model embodiment
Shape structural representation；
The outside truss three of a kind of city integrated piping lane construction outside mould truss of Fig. 8 this utility model embodiment
Angular structure schematic diagram；
The truss railway carriage or compartment, outside of a kind of city integrated piping lane construction outside mould truss of Fig. 9 this utility model embodiment
Formula schematic diagram.
In figure: 21: connect location truss；22: outside basic templates；23: be slidably connected assembly 24: outside adjusts template；
25: outside truss；26: angle steel；29: the first steel；30: the second steel；31: main box；35: outer side mold；41: road wheel；42:
Road wheel bearing.
Detailed description of the invention
With embodiment, detailed description of the invention of the present utility model is described in further detail below in conjunction with the accompanying drawings.Following reality
Execute example for this utility model is described, but be not limited to scope of the present utility model.
As shown in Fig. 1-Fig. 9, the one city integrated piping lane construction outside mould of offer of the present utility model, bag
Including two outer side molds 35 and at least two groups connect location truss 21, described outer side mold 35 includes that outside basic templates 22 and outside are adjusted
Mould preparation plate 24, the described location truss 21 that connects is assembled in two described outer side mold 35 tops, described outer side mold 35 outer upper edge
Length direction is provided with outside truss 25.By the scale according to pipe gallery to be built and size directly by vehicle assembled
Interior mould is fixed on construction location, then carries out assembled outside mould, and concrete is directly injected into mould and outer side mold in vehicle assembled
Between 35 in space, be shaped to pipe gallery, mold releasability runs, it is to avoid the formwork error of traditional handicraft is big, quality control
The problem of difficulty, has that structure is relatively easy, easy to operate, group mould precision height, steady quality, construction period are short, operating expenses
Low, the construction infection phase is short and production efficiency advantages of higher.One of the present utility model city integrated piping lane construction is with outward
Side mold, as shown in Fig. 1-Fig. 9, it may also is that described outer side mold 35 or outside on the basis of previously described technical scheme
Truss 25 is provided with, with described location truss 21 link position that is connected, the assembly 23 that is slidably connected, described in be slidably connected assembly 23 top
Be connected with the described connector 33 being connected location truss 21, described in be slidably connected assembly 23 bottom and described outer side mold 35 or with
Truss 25 top, outside connects.The described location truss 21 that connects is provided with described outer side mold 35 or outside truss 25 link position
Be slidably connected assembly 23, described in be slidably connected assembly 23 respectively with described outer side mold 35 or outside truss 25 and described be connected location
Truss 21 is fixing to be connected, described in the assembly 23 that is slidably connected include lower slider connector and upper sliding connector, the described upper company of slip
Fitting is slidably arranged on described lower slider connector, and described upper sliding connector fixes connection with being connected location truss 21,
Described lower slider connector is fixing with outer side mold 35 to be connected, or connects with outside truss 25 is fixing, is slidably connected during matched moulds state
Assembly 23 and external mold side form truss are in interior extreme position, when having poured the rear demoulding, hold out against the upper slip being slidably connected between assembly 23
Thrust part between part and lower slider so that slide to outer extreme position outside the assembly 23 that is slidably connected, fastens the assembly that is slidably connected
Connecting bolt between upper sliding part and the lower slider of 23, external mold is the most removable, so, by outer side mold 35 or purlin, outside
Frame 25 arranges, with being connected location truss 21 link position, the assembly 23 that is slidably connected so that when mold releasability, can easily realize
Move outer for outer side mold 35, reduce the frictional force between outer side mold 35 and the concrete having poured molding, conveniently stripped.By basis
Mould in vehicle assembled is fixed on construction location by the scale of pipe gallery to be built, then carry out assembled described herein outside
Side mold, directly pour conjunction piping lane by above-mentioned outside mould, it is to avoid the formwork error of traditional handicraft is big, quality control
The problem of difficulty, solves the modulus problem in traditional handicraft, has that structure is relatively easy, easy to operate, group mould precision is high, quality
Stablize, the construction period is short, operating expenses is low, the construction infection phase is short and production efficiency advantages of higher.
Described one city integrated piping lane construction outside mould, also includes outside truss 25, described outside truss
25 are fixed on described outer side mold 35 outer upper, described outer side mold truss 22 and outer side mold along described outer side mold 35 length direction
It is connected by the connector 34 on outer side mold truss between 35.It is understood that especially pouring in construction
Cheng Zhong, concrete relative mass is relatively big, when being poured into mould inside, it is easy to because the lateral stress that concrete is produced by gravity
Mould itself is made to deform upon, and at outside mould described herein when mobile, due to traveling pavement roughness or be subject to
Power is uneven, and mould itself all can be made to produce certain deformation, so arranging purlin, outside in outer side mold 35 outer upper in the application
Frame 25, avoids outer side mold 35 run-off the straight, the problem of deformation in this way, improves the overall structure stability of mould, carries
High production and work efficiency.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, described connection
Location truss 21 cross section can be rectangle, and described connection location truss 21 includes four the first steel 29, at least eight second
Steel 30 and at least four angle steel 37, four described first steel 29 constitute rectangular configuration, adjacent described first steel 29 end
It is welded with orthogonal second steel 30, between adjacent two described first steel 29, welds staggered angle steel 37.Described four
First steel 29 constitute the rectangular box that cross section is rectangular configuration, are welded with vertical described between adjacent described first steel 29
Second steel 30 of the first steel 29, preferably, described second steel 30 are provided with many groups, by arranging many groups the second steel 30,
Can ensure that the overall structure stability of outside truss 25, increase between the first steel 29 and the second steel 30 at grade
If a plurality of angle steel 37, general have certain angle with the first steel 29 and the second steel 30, mostly is triangle, the stability of triangle
Height, is not easy to deformation, has firm, firm, pressure feature, further enhance the structural stability of outside truss 25.Institute
State connection location truss and be provided with the adjustment section that same foregoing is consistent.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
It may also is that described location truss 21 cross section that connects is triangle on the basis of the technical scheme stated, purlin, described connection location
Frame 21 includes three the first steel 29, at least stays second steel 30 and at least three angle steel 37, three described first steel 29
Triangle structure, adjacent described first steel 29 end is welded with the second steel 30, adjacent two described first steel 29
Between be welded with staggered angle steel 37.Article three, the described first triangle structure of steel 29, adjacent described first steel 29 end weldering
It is connected to be perpendicular to the second steel 30 of described first steel 29, between adjacent two described first steel 29, is welded with the angle of staggered welding
Steel 37.Described 3 the first steel 29 constitute the triangle framework that cross section is rectangular configuration, between adjacent described first steel 29
Being welded with the second steel 30 of the most described first steel 29, preferably, described second steel 30 are provided with many groups, by arranging
Many groups the second steel 30, it is ensured that the overall structure stability of outside truss 25, the first steel 29 at grade with
Setting up a plurality of angle steel 37 between second steel 30, general have certain angle with the first steel 29 and the second steel 30, mostly is triangle
Shape, the stability of triangle is high, is not easy to deformation, has firm, firm, pressure feature, to the knot connecting location truss 21
Structure stability further enhances.The described location truss that connects is provided with the adjustment section that same foregoing is consistent.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
It may also is that the described location truss 21 that connects is for van-type structure on the basis of the technical scheme stated, described connection location truss 21
Including lower box 39 and upper box 38, described lower box 39 is rectangle or trapezium structure, and described upper box 38 is rectangle or trapezoidal
Structure, described upper box 38 is welded on described lower box 39.The advantage of employing body structure is, because body structure is full envelope
Closed type structure, its structural stability is more firm relative to traditional steelframe, and the casing in this programme is in rectangular configuration
Set up upper box 38, and the stability of structure is promoted further.The described location truss that connects is provided with same foregoing one
The adjustment section caused.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
On the basis of the technical scheme stated it may also is that described outside truss 25 cross section is rectangle, and described outside truss 25 includes four
Bar the first steel 29, at least eight the second steel 30 and at least four angle steel 26, four described first steel 29 constitute rectangle knot
Structure, adjacent described first steel 29 end is welded with orthogonal second steel 30, between adjacent two described first steel 29
The angle steel 26 that welding is staggered.Described four the first steel 29 constitute the rectangular box that cross section is rectangular configuration, and adjacent described
Being welded with the second steel 30 of the most described first steel 29 between one steel 29, preferably, described second steel 30 are provided with many
Group, by arranging many groups the second steel 30, it is ensured that the overall structure stability of outside truss 25, the at grade
Setting up a plurality of angle steel 26 between one steel 29 and the second steel 30, general have certain angle with the first steel 29 and the second steel 30
Degree, mostly is triangle, and the stability of triangle is high, is not easy to deformation, has firm, firm, pressure feature, to outside truss
The structural stability of 25 further enhances.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
On the basis of the technical scheme stated it may also is that described outside truss 25 cross section is triangle, and described outside truss 25 includes
Article three, the first steel 29, at least stay second steel 30 and at least three angle steel 26, three described first steel 29 constitute triangle
Shape structure, adjacent described first steel 29 end is welded with the second steel 30, is welded with friendship between adjacent two described first steel 29
Wrong angle steel 26.Article three, the described first triangle structure of steel 29, adjacent described first steel 29 end is welded with vertically
The angle steel 26 of staggered welding it is welded with between the second steel 30 of described first steel 29, adjacent two described first steel 29.Institute
State 3 the first steel 29 and constitute the triangle framework that cross section is rectangular configuration, be welded with between adjacent described first steel 29
Second steel 30 of the most described first steel 29, preferably, described second steel 30 are provided with many groups, by arranging many groups second
Steel 30, it is ensured that the overall structure stability of outside truss 25, the first steel 29 and the second steel at grade
Setting up a plurality of angle steel 26 between 30, general have certain angle with the first steel 29 and the second steel 30, mostly is triangle, triangle
Stability high, be not easy to deformation, have firm, firm, pressure feature, further to the structural stability of outside truss 25
Strengthen.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
On the basis of the technical scheme stated it may also is that can be outside truss 25 be monomer van-type structure, main box 31 is rectangle；Also
Outside can being, truss 25 be monomer van-type structure, and main box 31 is trapezoidal.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, in previously described skill
It may also is that described outer side mold 22 bottom is provided with running gear on the basis of art scheme.In previously described technical scheme
On the basis of it is also possible that include running gear, described running gear is arranged on basic templates 22 bottom, described outside, described walking
Device includes that road wheel 41 and road wheel support 42, described road wheel 41 are arranged on described outside by described road wheel support 42
Bottom basic templates 22, road wheel 41 can be with 90-degree rotation, and when the demoulding and matched moulds, road wheel 41 turns to 90 degree, with outer side mold 35
Work surface in vertical state, now, outer side mold 35 can outwards or in move.Outer side mold 35 and the concrete poured disengage
After, road wheel 41 90-degree rotation, outer side mold 35 can run to subsequent work section, so, current work under the traction of traction machine
After section has been constructed, need to move outside mould to next construction location, by installing running gear additional, be greatly improved work effect
Rate, also saves substantial amounts of man power and material, cost-effective.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, above
It may also is that described running gear includes road wheel 41 and road wheel support 42, described row on the basis of the technical scheme described
Travelling wheel 41 is rotatably disposed in bottom described outside basic templates 22 by described road wheel support 42.Described road wheel 41 passes through
Described road wheel support 42 is arranged on bottom described outside basic templates 22, and road wheel 41 can be with 90-degree rotation, the demoulding and matched moulds
Time, road wheel 41 turns to 90 degree, with outer side mold 35 work surface in vertical state, now, outer side mold 35 can outwards or in move.Outward
After side form 35 and the concrete poured disengage, road wheel 41 90-degree rotation, outer side mold 35 can be walked under outside is drawn
To subsequent work section, on such road wheel 41, plane is rectangular steel plates, and lower plane is disk steel plate, and centre penetrates above for steel pipe
Rectangular slab and following disk steel plate, surrounding for strengthen stud, such structure ensure road wheel 41 structural strength and
Its stability, because the gravity that road wheel 41 is born is relatively big, compare concentration, so this utility model uses above-mentioned
Structure designs.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
Can also is that on the basis of the technical scheme stated that being provided with auxiliary below described outside basic templates 22 supports leading screw, described auxiliary
Support leading screw can release formula with ground and offset.Described auxiliary supports leading screw and is arranged on basic templates 22 bottom, described outside, described
Auxiliary supports leading screw top and fixes with outside basic templates 22 bottom, and described auxiliary supports leading screw bottom can release formula phase with ground
Support.So, rotate auxiliary and support leading screw so that it is be painstaking, reduce horizontal moment of flexure, on the other hand, also to be moved by outside mould easily
Move to subsequent work stations.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
It may also is that described outer side mold 35 includes that outside basic templates 22 and outside adjust template 24 on the basis of the technical scheme stated,
Described outside adjusts template 24 and is arranged on the top of described outside basic templates 22, and described outside adjusts template 24 and described slip
Connect assembly 23 to connect.Wherein, described outside adjusts template 24 and is connected with the described lower slider being slidably connected assembly 23, this
Sample, when in the city piping lane construction carrying out different cross section height, only need to change outside and adjust template 24, by regulating or
Template 24 is adjusted so that outer side mold 35 need not manufacture various structures, when piping lane is constructed, substantially increases work outside replacing
Efficiency, also reduces the cost of piping lane construction.
One of the present utility model city integrated piping lane construction outside mould, as shown in Fig. 1-Fig. 9, is above retouching
It may also is that described outer side mold 35 back side is provided with vibrator on the basis of the technical scheme stated.Described vibrator is preferably electricity
Move or pneumatic vibrator, facilitate this mold releasability, improve demoulding efficiency, thus promote work efficiency.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model know-why, it is also possible to make some improvement and modification, these change
Enter and also should be regarded as protection domain of the present utility model with modification.
Claims (9)
1. a city integrated piping lane construction outside mould, it is characterised in that: include two outer side molds and at least two groups
Connecting location truss, described connection location truss is assembled in two described outer side mold tops, and described outer side mold outer upper is along long
Degree direction is provided with outside truss.
One the most according to claim 1 city integrated piping lane construction outside mould, it is characterised in that: outside described
Side form is provided with, with the described location truss link position that is connected, the assembly that is slidably connected, described in the assembly that is slidably connected be slidably connected from above
Part and lower slider connector and thrust part form, and upper sliding connector connects with the described location truss that is connected, the described company of slip
Connected components bottom is connected with described outer side mold or outside truss.
One the most according to claim 1 city integrated piping lane construction outside mould, it is characterised in that: it is fixed to connect
Truss cross section, position is rectangle truss structure or triangular truss structure or van-type structure, and its length direction has adjustment section, adjusts section
And be connected between the truss of connection location.
One the most according to claim 2 city integrated piping lane construction outside mould, it is characterised in that: outside described
Side form includes that outside basic templates and outside adjust template, and described outside adjusts upper in described outside basic templates of template-setup
Portion, described outside adjusts template and is connected with the described assembly that is slidably connected.
One the most according to claim 1 city integrated piping lane construction outside mould, it is characterised in that: outside described
Side truss cross section is rectangle truss structure or triangular truss structure or van-type structure.
6. according to the one city integrated piping lane construction outer side mold described in claim 1-5 any one claim
Tool, it is characterised in that: described outer side mold bottom is provided with running gear.
One the most according to claim 6 city integrated piping lane construction outside mould, it is characterised in that: described row
Walking apparatus includes road wheel and road wheel support, and described road wheel is arranged on bottom described outer side mold by described road wheel support
And it is rotatable.
8. according to the one city integrated piping lane construction outer side mold described in claim 1-5 any one claim
Tool, it is characterised in that: being provided with auxiliary below described outer side mold and support leading screw, described auxiliary supports leading screw can release formula with ground
Offset.
9. according to the one city integrated piping lane construction outer side mold described in claim 1-5 any one claim
Tool, it is characterised in that: the described outer side mold back side is provided with vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357763.6U CN205839793U (en) | 2016-04-26 | 2016-04-26 | A kind of city integrated piping lane construction outside mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357763.6U CN205839793U (en) | 2016-04-26 | 2016-04-26 | A kind of city integrated piping lane construction outside mould |
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| CN205839793U true CN205839793U (en) | 2016-12-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703076A (en) * | 2016-12-30 | 2017-05-24 | 宁夏众力管廊科技有限公司 | Outer die walking device for construction of comprehensive pipe gallery |
| CN107142957A (en) * | 2017-06-10 | 2017-09-08 | 李国耀 | A kind of city integrated piping lane walking circulation construction system and its method |
| CN110318310A (en) * | 2019-07-17 | 2019-10-11 | 邓怡宁 | A kind of assembly type roadnet based on the building of dot matrix foundation pile net |
-
2016
- 2016-04-26 CN CN201620357763.6U patent/CN205839793U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703076A (en) * | 2016-12-30 | 2017-05-24 | 宁夏众力管廊科技有限公司 | Outer die walking device for construction of comprehensive pipe gallery |
| CN106703076B (en) * | 2016-12-30 | 2019-12-20 | 宁夏众力管廊科技有限公司 | Outer mold walking device for construction of comprehensive pipe rack |
| CN107142957A (en) * | 2017-06-10 | 2017-09-08 | 李国耀 | A kind of city integrated piping lane walking circulation construction system and its method |
| CN107142957B (en) * | 2017-06-10 | 2019-01-22 | 李国耀 | A kind of city integrated piping lane walking circulation construction system and its method |
| CN110318310A (en) * | 2019-07-17 | 2019-10-11 | 邓怡宁 | A kind of assembly type roadnet based on the building of dot matrix foundation pile net |
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