CN107060835A - A kind of underground change the outfit chamber branch hang combination unit and its construction method - Google Patents
A kind of underground change the outfit chamber branch hang combination unit and its construction method Download PDFInfo
- Publication number
- CN107060835A CN107060835A CN201710232011.6A CN201710232011A CN107060835A CN 107060835 A CN107060835 A CN 107060835A CN 201710232011 A CN201710232011 A CN 201710232011A CN 107060835 A CN107060835 A CN 107060835A
- Authority
- CN
- China
- Prior art keywords
- shaped steel
- frame structure
- chamber
- outfit
- sectional shelf
- Prior art date
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 96
- 239000010959 steel Substances 0.000 claims abstract description 96
- 238000012545 processing Methods 0.000 claims abstract description 4
- 210000003205 muscle Anatomy 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 241000700608 Sagitta Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
Abstract
Combination unit is hung the invention discloses a kind of underground chamber branch that changes the outfit, it is included in the chamber two that changes the outfit and helps frame structure with top installation, crane girder is installed in frame structure both sides, driving horizontal mobile mechanism, up and down hoisting mechanism and moving operation room are sequentially installed with crane girder；The frame frame sectional shelf-unit that above-mentioned frame structure is arranged by continuous arrangement is constituted；It is connected with each other between every two framves sectional shelf-unit with steel connecting rod, all sectional shelf-units is formed overall frame structure.The present invention combines chamber support and allotment shipment driving system together, directly allotment shipment driving system is arranged in frame structure, frame structure is to play supporting chamber, play a part of support allotment shipment driving system guide groove again, the concrete column of guide groove is individually built no longer by the way of placing concrete, as long as processing component from well, in underground, chamber is assembled, construction and installation are convenient, and simple in construction, cost is greatly reduced.
Description
Technical field
The present invention relates to construction of coal mine field.
Background technology
At present, the problem of coal deep mining encounters high stress, large section soft rock tunnel.The especially supporting of underground chamber
It is more difficult.Add, become increasingly conspicuous the problem of the large scale equipment maintenance support of underground, had a strong impact on the manufacturing schedule in colliery.
Therefore, " frame not upper well " is repaired using underground chamber that changes the outfit to large scale equipments such as hydraulic supports, is allocated and is shipped, it has also become
The main flow of domestic large coal mine future development.Current underground changes the outfit chamber will also be using pouring coagulation in addition to the independent supporting of cave wall
The mode of soil builds two row's concrete columns, and the guide groove that allotment is shipped driving system is supported, then is arranged in guide groove
Driving system is installed, so long construction period, system complex, costly.Therefore in the urgent need to a set of new supporting and hang
Combination is filled to solve the above problems.
The content of the invention
For the long construction period for the chamber technology presence that changed the outfit under solution existing well, system complex, costly problem, this hair
It is bright to propose a kind of underground and change the outfit chamber branch-hang combination unit.
Change the outfit the construction method of chamber branch-hang combination unit present invention simultaneously provides this underground.
To reach above-mentioned purpose, the present invention is adopted the technical scheme that：
A kind of underground changes the outfit chamber branch-hang combination unit, it is characterised in that it is included in the chamber two that changes the outfit and helped and top peace
The frame structure of construction is filled, is installed on the certain altitude of frame structure both sides and visits platform on fixed, two guide grooves are distinguished tight
It is affixed on the spy platform of frame structure both sides, crane girder is set up in guide groove, row is sequentially installed with crane girder
Car horizontal mobile mechanism, up and down hoisting mechanism and moving operation room；The frame frame that above-mentioned frame structure is arranged by continuous arrangement
Sectional shelf-unit is constituted；It is connected with each other between every two frame with steel connecting rod, all sectional shelf-units is formed overall framework knot
Structure；Combinations of the above support is made up of two shaped steel column, the shaped steel arc back timber at top and the prefabricated set components helped, by prefabricated
Set component is by shaped steel column together with shaped steel arc back timber grafting anchoring.
Further, in order to prevent chamber from occurring pucking phenomenon, connected in the bottom of every frame sectional shelf-unit by prefabricated set component
It is connected to shaped steel arc bottom girder.
Further, above-mentioned shaped steel column, the shaped steel arc back timber at top and shaped steel arc bottom girder are using double muscle H profile steels.
Further, above-mentioned prefabricated set component is the high intensity steel body being enclosed in double muscle H profile steels of a corner shape
Component.
It is a kind of as above-mentioned underground changes the outfit the construction method of chamber branch-hang combination unit, including：
The first step, in the chamber that changes the outfit completed with gib has been tunneled, a frame frame is installed for cave wall from inside to outside
The sectional shelf-unit of supporting, is first according to design size and helps to excavate column placement groove two, and help shaped steel column by two with pull bar
It is fastened on two to help on country rock wall, then installs at the top of shaped steel column prefabricated set component, then shaped steel arc back timber is inserted pre-
In system set component, then anchored or welded, shaped steel column and shaped steel arc back timber is linked into an integrated entity；When latter sectional shelf-unit
After installation, linked together with steel connecting rod with previous sectional shelf-unit, all sectional shelf-units is formed overall frame
Frame structure；
Second step, sets up purlin in frame structure, with the gap between backboard fill frame structure and country rock wall, then
The whitewashing processing of whole chamber surface；Then, anchor cable is installed on chamber top plate, helps that connection steel part and steel band are installed in chamber two,
Carry out strengthening supporting；
3rd step, installs lifting crane system；Installed first on the shaped steel column of frame structure both sides on fixed and visit platform,
Two guide grooves are respectively secured on the spy platform of frame structure both sides, crane girder is set up in guide groove, are then being risen
Driving horizontal mobile mechanism, rope hoisting mechanism and moving operation room are installed successively on heavy-duty machine girder；Wherein rope hoisting
Mechanism includes winding plant, steel wire rope, pulley and suspension hook.
Further,, should be vertical in shaped steel when shaped steel column is helped in first step construction two in order to prevent chamber from occurring pucking phenomenon
Prefabricated base angle set component is installed in the bottom of post, then by the set component of shaped steel arc bottom girder insertion base angle, then anchored or
Welding, makes shaped steel column and shaped steel arc bottom girder link into an integrated entity.
The positive effect of the present invention：Chamber support and allotment shipment driving system are combined together, directly allotment is shipped
Driving system is arranged in frame structure, and frame structure is to play supporting chamber, and support allotment shipment vehicle-driving is played again
The effect for guide groove of uniting, individually builds the concrete column of guide groove no longer by the way of placing concrete, as long as adding from well
The good component of work, in underground, chamber is assembled, and construction and installation are convenient, and simple in construction, cost is greatly reduced.
Brief description of the drawings
Fig. 1 is the integral frame structure schematic diagram of sectional shelf-unit formation；
Fig. 2 is double muscle H profile steel structural upright schematic diagrames；
Fig. 3 is to visit platform structural upright schematic diagram；
Fig. 4 is Components Shape schematic diagram；
Fig. 5 is chamber support mode sectional schematic diagram；
Fig. 6 is lifting crane structural representation.
In figure, 1- shaped steel columns, the prefabricated set components of 2-, 2a- base angles set component, 3- shaped steel arc back timbers, the connection of 4- steels
Rod member, 5- shaped steel arc bottom girders, 6- steel bands, 7- anchor poles, 8- backboards, 9- anchor cables, 10- purlins, 11- suspension hooks, 12- moves horizontally machine
Structure, 13- steel wire ropes, 14- moving operations room, 15- winding plants, 16- visits platform, 17- guide grooves, 18- girders.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
A certain mine is designed and sized to a width of 8000mm according to mining geological conditions and production requirement to the chamber that changes the outfit,
A height of 6000mm；The a height of 4000mm of stalk, sagitta is 2000mm.
The present invention devises a kind of underground for this and changed the outfit chamber branch-hang combination unit.The structure of the device as shown in fig. 6,
It is included in the chamber two that changes the outfit and helps frame structure with top installation, and frame structure is as shown in figure 1, be additionally included in framework knot
Installed on the certain altitude of structure both sides and platform 16 is visited on fixed, visit the construction of platform 16 as shown in figure 3, two guide grooves 17 are tight respectively
It is affixed on the spy platform 16 of frame structure both sides, crane girder 18 is set up in guide groove 17, then on crane girder 18
Driving horizontal mobile mechanism 12, rope hoisting mechanism 13 and moving operation room 14 are installed successively；Above-mentioned frame structure is by even
One frame frame sectional shelf-unit of continuous arranged is constituted (see Fig. 1)；It is connected with each other between every two frame with steel connecting rod 4, makes institute
There is sectional shelf-unit to form overall frame structure；Combinations of the above support by two help shaped steel column 1, top shaped steel arched top
Beam 3 and prefabricated set component 2 are constituted, by prefabricated set component 2 by together with shaped steel column 1 and the grafting of shaped steel arc back timber 3 anchoring.
Further, in order to prevent chamber from occurring pucking phenomenon, shaped steel arc bottom girder is provided with the bottom of every frame sectional shelf-unit
5, shaped steel arc bottom girder 5 covers component 2a by prefabricated base angle and is connected with shaped steel column 1.
Further, above-mentioned shaped steel column 1, the shaped steel arc back timber 3 at top and shaped steel arc bottom girder 5 are using double muscle H types
Steel.The construction of double muscle H profile steels is as shown in Figure 2.
Further, above-mentioned prefabricated set component 2 is the high intensity steel body being enclosed in double muscle H profile steels of a corner shape
Component；Base angle covers component 2a and constructs essentially identical with the prefabricated component 2 that covers, and simply interior angle angle is according to steel column 1 and shaped steel arc
The connection angle design of shape bottom girder 5, Components Shape is as shown in Figure 4.
Above-mentioned underground change the outfit chamber branch-hang combination unit construction method it is as follows：
The first step, as shown in figure 1, in the chamber that changes the outfit completed with gib has been tunneled, a frame frame is pacified from inside to outside
Fill for cave wall sectional shelf-unit；Sectional shelf-unit array pitch 1500mm, by two help shaped steel column 1, top the and of shaped steel arc back timber 2
Prefabricated set component 3 is constituted；When every frame sectional shelf-unit is installed, it is first according to design size and helps to excavate column placement groove two, and
Help shaped steel column 1 to be fastened on two by two with pull bar to help on country rock wall, then install at the top of shaped steel column 1 prefabricated set component 2,
Shaped steel arc back timber 3 is inserted in prefabricated set component 2 again, then is anchored or is welded, makes shaped steel column 1 and shaped steel arc back timber
3 link into an integrated entity；After latter sectional shelf-unit installation, linked together with steel connecting rod 4 with previous sectional shelf-unit,
All sectional shelf-units are made to form overall frame structure as shown in Figure 1；
Second step, as shown in figure 5, setting up purlin 10 (purlin is shown in figure) in frame structure, is filled with backboard 8
Gap between frame structure and country rock wall, then in whole chamber surface whitewashing processing, then carry out strengthening supporting；Strengthening supporting
It is installation anchor cable 9, the model φ 17.8mm of anchor cable 9 × 6000mm, spacing 1600mm, array pitch 1500mm on chamber top plate；
Between the shaped steel column 1 that chamber two is helped, upper bolt 7 and steel band 6 are conventionally installed.
3rd step, as shown in fig. 6, installing lifting crane system；Installed first on the shaped steel column 1 of frame structure both sides
Platform 16 is visited in fixation.Two guide grooves 17 are respectively secured on the spy platform 16 of frame structure both sides, set up in guide groove 17
Crane girder 18, then on crane girder 18 successively install driving horizontal mobile mechanism 12, rope hoisting mechanism and
Moving operation room 14；Wherein rope hoisting mechanism includes winding plant 15, steel wire rope 13, pulley and suspension hook 11.Visit platform 16
Construction is as shown in Figure 3.
Further,, should be in shaped steel when shaped steel column 1 is helped in first step construction two in order to prevent chamber from occurring pucking phenomenon
Prefabricated base angle set component 2a is installed in the bottom of column 1, then shaped steel arc bottom girder 5 is inserted in the set component 2a of base angle, then enters
Row anchoring is welded, and shaped steel column 1 and shaped steel arc bottom girder 5 is linked into an integrated entity.
Claims (6)
- The chamber branch-hang combination unit 1. a kind of underground changes the outfit, it is characterised in that it is included in, and the chamber two that changes the outfit is helped and top is installed The frame structure of construction, spy platform is mounted with frame structure both sides, and two guide grooves are respectively secured to frame structure both sides Spy platform on, guide groove restocking be provided with crane girder, be sequentially installed with crane girder driving horizontal mobile mechanism, Hoisting mechanism and moving operation room up and down；The frame frame sectional shelf-unit that above-mentioned frame structure is arranged by continuous arrangement is constituted；Often It is connected with each other between two frame sectional shelf-units with steel connecting rod, all sectional shelf-units is formed overall frame structure；It is above-mentioned Sectional shelf-unit be made up of two shaped steel column, the shaped steel arc back timber at top and the prefabricated set components helped, pass through prefabricated set component By shaped steel column together with shaped steel arc back timber grafting anchoring.
- The chamber branch-hang combination unit 2. underground as claimed in claim 1 changes the outfit, it is characterised in that in every frame sectional shelf-unit Bottom is connected with shaped steel arc bottom girder by prefabricated set component.
- The chamber branch-hang combination unit 3. underground as claimed in claim 1 changes the outfit, it is characterised in that described shaped steel column, top The shaped steel arc back timber and shaped steel arc bottom girder in portion are using double muscle H profile steels.
- The chamber branch-hang combination unit 4. underground as claimed in claim 1 changes the outfit, it is characterised in that described prefabricated set component It is the high intensity steel body component being enclosed in double muscle H profile steels of a corner shape.
- A kind of construction method of chamber branch-hang combination unit 5. underground as described in claim 1-4 is any changes the outfit, its feature exists In step is as follows：The first step, in the chamber that changes the outfit completed with gib has been tunneled, a frame frame is installed for cave wall supporting from inside to outside Sectional shelf-unit, be first according to design size two help excavate column place groove, and with pull bar by two help shaped steel column fasten Helped two on country rock wall, then install at the top of shaped steel column prefabricated set component, then shaped steel arc back timber is inserted into prefabricated set In component, then anchored or welded, shaped steel column and shaped steel arc back timber is linked into an integrated entity；When latter sectional shelf-unit is installed After the completion of, linked together with steel connecting rod with previous sectional shelf-unit, all sectional shelf-units is formed overall framework knot Structure；Second step, sets up purlin in frame structure, with the gap between backboard fill frame structure and country rock wall, then whole The whitewashing processing of chamber surface；Then, anchor cable is installed on chamber top plate, helps that connection steel part and steel band are installed in chamber two, carry out Strengthening supporting；3rd step, installs lifting crane system；Installed first on the shaped steel column of frame structure both sides on fixed and visit platform, by two Root guide groove is respectively secured on the spy platform of frame structure both sides, crane girder is set up in guide groove, then in crane Driving horizontal mobile mechanism, rope hoisting mechanism and moving operation room are installed successively on girder；Wherein rope hoisting mechanism Including winding plant, steel wire rope, pulley and suspension hook.
- The construction method of chamber branch-hang combination unit 6. underground as claimed in claim 5 changes the outfit, it is characterised in that first Step construction two is when helping shaped steel column, should install prefabricated base angle set component in the bottom of shaped steel column, then by shaped steel arcuate bottom In the set component of beam insertion base angle, then anchored or welded, shaped steel column and shaped steel arc bottom girder is linked into an integrated entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232011.6A CN107060835B (en) | 2017-04-11 | 2017-04-11 | A kind of underground chamber branch-that changes the outfit hangs combination unit and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232011.6A CN107060835B (en) | 2017-04-11 | 2017-04-11 | A kind of underground chamber branch-that changes the outfit hangs combination unit and its construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107060835A true CN107060835A (en) | 2017-08-18 |
| CN107060835B CN107060835B (en) | 2019-02-05 |
Family
ID=59602006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710232011.6A Expired - Fee Related CN107060835B (en) | 2017-04-11 | 2017-04-11 | A kind of underground chamber branch-that changes the outfit hangs combination unit and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107060835B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117027924A (en) * | 2023-10-10 | 2023-11-10 | 山西联盛科技有限公司 | Underground safety refuge chamber |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3142741B2 (en) * | 1995-05-10 | 2001-03-07 | 株式会社明電舎 | Heavy equipment |
| CN103213905A (en) * | 2013-05-07 | 2013-07-24 | 四川广旺能源发展（集团）有限责任公司唐家河煤矿 | Underground hoisting system |
| CN203430563U (en) * | 2013-08-16 | 2014-02-12 | 中煤第一建设有限公司 | Narrow and small deviated well bore space pipe conveying and hoisting device |
| CN203669879U (en) * | 2014-01-23 | 2014-06-25 | 四川川煤华荣能源股份有限公司花山煤矿 | Down-hole hydraulic support assembling chamber |
| CN203796285U (en) * | 2014-03-20 | 2014-08-27 | 中铁七局集团第三工程有限公司 | Tunnel supporting structure with steel frames |
| CN204552783U (en) * | 2015-03-24 | 2015-08-12 | 兰州交通大学 | A kind of loess tunnel vertical deformation control structure |
| CN205154191U (en) * | 2015-12-08 | 2016-04-13 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel preliminary bracing steel pipe concrete steelframe |
| CN105952490A (en) * | 2016-06-28 | 2016-09-21 | 淮南矿业(集团)有限责任公司 | Hydraulic travelling crane and underground hydraulic bracket assembling system applying same |
-
2017
- 2017-04-11 CN CN201710232011.6A patent/CN107060835B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3142741B2 (en) * | 1995-05-10 | 2001-03-07 | 株式会社明電舎 | Heavy equipment |
| CN103213905A (en) * | 2013-05-07 | 2013-07-24 | 四川广旺能源发展（集团）有限责任公司唐家河煤矿 | Underground hoisting system |
| CN203430563U (en) * | 2013-08-16 | 2014-02-12 | 中煤第一建设有限公司 | Narrow and small deviated well bore space pipe conveying and hoisting device |
| CN203669879U (en) * | 2014-01-23 | 2014-06-25 | 四川川煤华荣能源股份有限公司花山煤矿 | Down-hole hydraulic support assembling chamber |
| CN203796285U (en) * | 2014-03-20 | 2014-08-27 | 中铁七局集团第三工程有限公司 | Tunnel supporting structure with steel frames |
| CN204552783U (en) * | 2015-03-24 | 2015-08-12 | 兰州交通大学 | A kind of loess tunnel vertical deformation control structure |
| CN205154191U (en) * | 2015-12-08 | 2016-04-13 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel preliminary bracing steel pipe concrete steelframe |
| CN105952490A (en) * | 2016-06-28 | 2016-09-21 | 淮南矿业(集团)有限责任公司 | Hydraulic travelling crane and underground hydraulic bracket assembling system applying same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117027924A (en) * | 2023-10-10 | 2023-11-10 | 山西联盛科技有限公司 | Underground safety refuge chamber |
| CN117027924B (en) * | 2023-10-10 | 2023-12-12 | 山西联盛科技有限公司 | Underground safety refuge chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107060835B (en) | 2019-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3489459B1 (en) | Non-uniform support structure for gob-side entry driving under deep unstable overburden rock and construction method | |
| CN1944914B (en) | Inspection scaffold of large component for boiler and building method thereof | |
| CN108532769A (en) | A kind of jack-up construction method of the additional elevator shaft structure of assembled | |
| CN107399656B (en) | Outdoor elevator and construction method thereof | |
| CN108131145A (en) | A kind of construction method of super-span tunnel excavation support | |
| CN107152028A (en) | One kind can revolve type truss-like concreting chuting system and its construction method | |
| CN108625483A (en) | A kind of equipment for the additional elevator shaft structure jack-up construction of assembled | |
| CN111794529A (en) | Modular construction hoisting method for arch type space pipe truss steel structure system | |
| CN107060835A (en) | A kind of underground change the outfit chamber branch hang combination unit and its construction method | |
| CN104060836B (en) | The lifting installation method of high curved surface rack | |
| CN205036384U (en) | Bias voltage dissolves tunnel supporting construction under environment of chamber | |
| CN112523112A (en) | Method for dismantling overhead suspension casting hanging basket | |
| CN107587885A (en) | Two lining trolley structures and assembling method in a kind of standard cross-section of tunnel | |
| CN207633795U (en) | A kind of foundation pit suspension lane device | |
| CN207175138U (en) | Outdoor installation elevator | |
| CN205297595U (en) | Excavate roadway subject to dynamic pressure support system in opposite directions | |
| CN206693242U (en) | A kind of vertical bearing structure of suspension support beam in base pit engineering | |
| CN211920714U (en) | Support system of pull-up and pull-down type external hanging self-climbing tower crane | |
| CN204282788U (en) | Shaping type scaffold can be assembled | |
| CN210508133U (en) | Railing post fixing structure | |
| CN106836223B (en) | Pile pulling method | |
| CN207297035U (en) | Two lining trolley structure in a kind of standard cross-section of tunnel | |
| KR200392074Y1 (en) | Trussed supporting post for easily constructing concrete structures | |
| CN220704534U (en) | Support structure capable of being removed afterwards | |
| CN215632066U (en) | Self-supporting high-speed rail crossing frame for power transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 |