CN105370026A - Lift shaft construction platform - Google Patents
Lift shaft construction platform Download PDFInfo
- Publication number
- CN105370026A CN105370026A CN201510579947.7A CN201510579947A CN105370026A CN 105370026 A CN105370026 A CN 105370026A CN 201510579947 A CN201510579947 A CN 201510579947A CN 105370026 A CN105370026 A CN 105370026A
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- steel platform
- elevator hoistways
- locating support
- connecting rod
- 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 abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 239000000725 suspension Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000007306 turnover Effects 0.000 claims description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004677 Nylon Substances 0.000 description 7
- 229920001778 nylon Polymers 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000009416 shuttering Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses a lift shaft construction platform, which comprises a steel platform and a connecting rod supporting mechanism, wherein the steel platform is rectangular; the sizes of four sides of the steel platform are smaller than the inner wall of a lift shaft; the connecting rod supporting mechanism comprises rotating shaft seats, a rotating shaft, rotating shaft levers, connecting rods and positioning supports; the rotating shaft seats are welded on the upper surface of the steel platform; the rotating shaft is hinged to the rotating shaft seats; the rotating shaft is fixedly connected with the rotating shaft levers; two ends of the rotating shaft levers are hinged to the positioning supports by the connecting rods; the positioning supports are also hinged to grooves in frames of the steel platform; the rotating shaft levers are upwards pulled to drive the positioning supports to stretch out of the frames of the steel platform by the connecting rods, and the positioning supports are clamped in reserved holes in the inner wall of the lift shaft; and the rotating shaft levers are pressed to enable the positioning supports to retract in the grooves in the frames of the steel platform by the connecting rods. The lift shaft construction platform has the advantages that the construction is flexile; the use is convenient; safety and reliability are realized; and the holes are reserved in four shear walls of the lift shaft without subsequent repair, so that water seepage and leakage project quality potential hazards are avoided.
Description
Technical field
The present invention relates to a kind of elevator hoistways operation platform.
Background technology
In present building Construction of High-rise, the shuttering supporting of the wall of indoor each layer elevator hoistways mainly adopts the method for erection operating platform.
At present, the shuttering supporting operating platform of indoor elevator hoistway inwall mainly contains following several construction method:
1) directly land with first floor vertical rod and successively set up support body operating platform and carry out shutterings-supported construction operation.
2) adopt i iron segmentation (in every 20 meters of height) to encorbelment and successively set up operating platform, carry out shutterings-supported construction operation.
3) weld the triangle steelframe of regularization, every layer, by tower crane equipment hoisting, triangular steel body panel is carried out shutterings-supported construction operation.
4) lift-type steel platform carries out shutterings-supported construction operation.
Above-mentioned constructure scheme, technique are summed up and mainly contain following deficiency:
1) use that material is many, operating personnel's workload is large, the activity duration is long, in elevator hoistways peace to tear operating platform construction operation personal security hidden danger open large.
2) to install location difficult for the lifting of triangle steelframe, material too much, do not reach energy-conserving and environment-protective green construction original intention, do not reach the science object of standardized construction.
3) although lift-type steel platform construction optimizes constructure scheme relatively, Dan Duixia road working procedure causes unnecessary impact, the unnecessary operation constructions such as the such as later stage also needs filling-up hole, plasters, waterproofing work, construct not in place a little, there will be that shear wall seeps water, the hidden danger of quality such as leak.With firmly build portion's quality controlling object of taking action for 2 years recently and disagree.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly sets up elevator hoistways operation platform flexible, esy to use, safe and reliable.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: elevator hoistways operation platform, comprises steel platform and linkage rod supporting mechanism; Steel platform comprises the frame of a rectangle, and the surrounding size of frame is less than the size of elevator hoistways inwall and is provided with the groove holding locating support bottom frame; Linkage rod supporting mechanism comprises shaft seat, rotating shaft, rotating shaft lever, connecting rod, V-arrangement connecting rod turntable, locating support, guide wheel; Shaft seat welds with above steel platform, rotating shaft and shaft seat hinged, rotating shaft and rotating shaft lever affixed, rotating shaft lever two ends are hinged by the middle part of connecting rod, V-arrangement connecting rod turntable and locating support, and locating support also with steel platform frame bottom groove hinged, guide wheel is fixed on the upper surface of locating support; Pull-up rotating shaft lever can drive locating support to stretch out from the groove bottom the frame of steel platform by connecting rod and be stuck in the hole to be provided of elevator hoistways inwall; Press down in the groove bottom locating support can be contracted in steel platform by rotating shaft lever frame by connecting rod, and locating support drives guide wheel to turn over 90 degree stretches out from framework avris.
As preferably, the frame surrounding of steel platform and the distance of elevator hoistways inwall are not more than 100mm.
As preferably, in the frame of steel platform, be welded with the reinforcing rib of both direction in length and breadth.
As preferably, steel platform is provided with suspension ring.
As preferably, above steel platform, be fixedly welded with the vertical rod sleeve pipe protruded upward.
As preferably, below steel platform, be fixedly welded with the protection supporting leg stretched out downwards, and protection supporting leg is higher than the height of locating support collapsed state.
As preferably, the rear end of the locating support of linkage rod supporting mechanism is connected with the groove bottom steel platform frame by hinge, the middle part of locating support by V-arrangement connecting rod turntable and rod hinge connection, and the middle part of V-arrangement connecting rod turntable and steel platform hinged.
As preferably, rotating shaft lever is provided with handle.
As preferably, steel platform tiles and welding steel.
The invention has the beneficial effects as follows:
Accurately fast erecting or moving elevator hoistway operation platform the construction of hoistway shuttering supporting operation be can be used for, infiltration that in conventional method, elevator hoistways wall shear wall reserved opening needs follow-up repairing to bring, workmanship of leaking hidden danger overcome.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the front view of elevator hoistways operation platform embodiment of the present invention.
Fig. 2 is the upward view of elevator hoistways operation platform embodiment of the present invention.
Fig. 3 is the front view (not filling linkage rod supporting mechanism) of elevator hoistways operation platform embodiment of the present invention.
Fig. 4 is that the A of Fig. 1 is to sectional view (locating support deployed condition).
Fig. 5 is that the A of Fig. 1 is to sectional view (locating support receipts state).
Mark in figure, 1-groove, 2-vertical rod sleeve pipe, 3-suspension ring; 4-frame, 5-crossbeam, 6-shaft seat, 7-longeron; 8-locating support, 9-V shape connecting rod turntable, 10-connecting rod; 11-rotating shaft lever, 12-rotating shaft, 13-hinge; 14-nylon guide wheel, 15-handle, 16-protects supporting leg; 17-hoistway inwall, the trapezoidal hole to be provided of 18-, 19-steel plate.
Detailed description of the invention
Fig. 1 is a kind of elevator hoistways operation platform, is made up of steel platform and linkage rod supporting mechanism.
Steel platform by rectangle frame 4 and 2 road longerons 7, together with crossbeam 5 and steel plate 9 form, in the middle of frame 4, be welded with 2 longerons 7 and 1 crossbeam 5, the paperbacked welding above of frame 4 steel plate 19.4 are provided with for holding the groove 1 (Fig. 3) of locating support 8 bottom frame.The surrounding of frame and the distance of elevator hoistways inwall are not more than 100mm, so that steel platform moves in elevator hoistways.
In figure 3, linkage rod supporting mechanism is made up of shaft seat 6, rotating shaft 12, rotating shaft lever 11, connecting rod 10, locating support 8.
In fig. 2, on the crossbeam 5 of steel platform, welded 3 shaft seats 6, rotating shaft 12 penetrate with shaft seat in hinged with it.Rotating shaft 12 is affixed with rotating shaft lever 11, connecting rod 10 is passed through at rotating shaft lever two ends and V-arrangement connecting rod turntable 9 is hinged with locating support 8, the rear end of locating support 8 is hinged with the groove 1 be positioned at bottom frame by hinge 13, the middle part of locating support 8 is hinged by V-arrangement connecting rod turntable 9 and connecting rod 10, namely the opening two ends of V-arrangement turntable are respectively with connecting rod 10 and to be fixed on the support of the nylon guide wheel 14 above locating support hinged, and the middle part of V-arrangement connecting rod turntable 9 is also hinged with the steel plate of steel platform.
Upwards pull the handle 15 be located on rotating shaft lever 11, rotating shaft lever 11 drives locating support 8 to stretch out from steel platform frame bottom groove 1 by connecting rod 10 and V-arrangement connecting rod turntable 9 and is stuck in the trapezoidal hole to be provided 18 of elevator hoistways inwall (Fig. 4).
In addition, press down handle 15, rotating shaft lever 11 can be promoted promote locating support 8 by connecting rod 10 and V-arrangement connecting rod turntable 9 and rotate around the pin joint with steel platform frame bottom groove, locating support 8 be drawn in the groove bottom steel platform frame (Fig. 5).The nylon guide wheel 14 be simultaneously fixed in the middle part of locating support also turns over 90 degree, make nylon guide wheel 14 from the side turning to steel platform frame upward, 4 nylon guide wheels are protruding from frame 4 both sides, and when elevator hoistways operation platform moves in elevator hoistways, nylon guide wheel 14 plays guide effect.
For convenience of the lifting of platform, on 2 longerons 7 of the centre of steel platform, be welded with 4 suspension ring 3.
For convenience of erection construction vertical rod, on steel platform, be fixedly welded with the vertical rod sleeve pipe 2 protruded upward, and vertical rod can be fixed with tight fixed bolt.
In order to during protection objective support collapsed state not with collision on the ground and damaging, steel platform below, be fixedly welded with the protection supporting leg 16 stretched out downwards, and protect supporting leg higher than the height (Fig. 2) of locating support collapsed state.
Make: the frame of steel platform 4 adopts channel-section steel to be welded, notch is respectively to outward, housing dimensional requirement housing distance elevator hoistways inwall is less than 100-200mm, because according to regulation in JGJ130-2011 " building operations fastener type steel pipe scaffold technical specification of security ", be not more than 100mm with the exterior wall distance of building inside scaffold protective upright rod, the object that this can effectively prevent the falling from high altitude of operating personnel and junk to cause hits event.Weld 2 road longerons 7 respectively in the centre of housing, plane symmetry welds 4 vertical rod sleeve pipes 2 and 4 suspension ring 3 thereon.One vertical crossbeam 5 is welded, respectively at the shaft seat 6 that the two ends of crossbeam 5 and middle welding sleeve pipe are made in the centre perpendicular to longeron.By shaft seat symmetry on steel platform, 2 cover linkage rod supporting mechanisms are installed.Below longeron 7, be symmetrically welded 4 vertical protection supporting legs 16, its height is higher than the height of the locating support 8 after drawing in, and to protect elevator hoistways operation platform, locating support can not be stressed when not using state.
Install: on elevator hoistways inwall 17, pre-buried trapezoidal foam built-in fitting first will be adopted in advance to make trapezoidal hole to be provided 18.First the locating support 8 on elevator hoistways operation platform is set to rounding state (Fig. 5) during lifting, then slowly lift to trapezoidal hole to be provided position, upwards rotating shaft lever 11 is gone to 90 degree of positions by pull handle 15, make locating support 8 abduction stretch into trapezoidal hole to be provided 18 (Fig. 4) along the inclined-plane of trapezoidal hole to be provided by connecting rod, by locating support, elevator hoistways operation platform is firmly arranged on elevator hoistways inwall 17.
Check and use repair and maintenance: before using behind elevator hoistways operation platform location, whether basically identically first to check that the locating support of framework 4 both sides stretches into the size of elevator hoistways inwall upper trapezoid hole to be provided 18, to the regular charging-up lubricant oil in all rotating pin positions of linkage rod supporting mechanism, guarantee the ensuring smooth transmission of each position, not corrosion.Vertical rod sleeve pipe being set up the reinforcement of the formwork-support such as vertical rod, horizon bar, building concrete through inspecting for acceptance, form removal, lifting to last layer complete a whole working cycle process.
The present embodiment adopts time processing shaping, form regularization, standardized elevator hoistways operation platform, lifting is convenient, nylon guide wheel set by elevator hoistways operation platform surrounding can be utilized quick and precisely to locate, after being in place, elevator hoistways operation platform bearing capacity is large, safe and reliable, below elevator hoistways operation platform, complete flitch, the hard isolating and protecting of form assembly or the soft isolating and protecting layer of large eye horizontal net with the steel pipe of scale simultaneously.Later stage remove after elevator hoistways inwall four trapezoidal reserved opening without the need to repairing stifled hole, elevator hoistways surrounding shear wall is built shaping because of global formation, avoids occurring penetration mass hidden danger etc. without the need to waterproofing work.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within claims of the present invention.
Claims (9)
1. elevator hoistways operation platform, is characterized in that: comprise steel platform and linkage rod supporting mechanism; Described steel platform comprises the frame of a rectangle, and the surrounding size of frame is less than the size of elevator hoistways inwall and is provided with the groove holding locating support bottom frame; Described linkage rod supporting mechanism comprises shaft seat, rotating shaft, rotating shaft lever, connecting rod, V-arrangement connecting rod turntable, locating support, guide wheel; Described shaft seat welds with above steel platform, rotating shaft and shaft seat hinged, rotating shaft and rotating shaft lever affixed, rotating shaft lever two ends are hinged by the middle part of connecting rod, V-arrangement connecting rod turntable and locating support, and locating support also with steel platform frame bottom groove hinged, described guide wheel is fixed on the upper surface of locating support; Pull-up rotating shaft lever can drive locating support to stretch out from the groove bottom the frame of steel platform by connecting rod and be stuck in the hole to be provided of elevator hoistways inwall; Press down in the groove bottom locating support can be contracted in steel platform by rotating shaft lever frame by connecting rod, and locating support drives guide wheel to turn over 90 degree stretches out from framework avris.
2. elevator hoistways operation platform according to claim 1, is characterized in that: the frame surrounding of described steel platform and the distance of elevator hoistways inwall are not more than 100mm.
3. elevator hoistways operation platform according to claim 1, is characterized in that: the reinforcing rib being welded with both direction in length and breadth in the frame of described steel platform.
4. the elevator hoistways operation platform according to claim 1 or 3, is characterized in that: described steel platform is provided with suspension ring.
5. the elevator hoistways operation platform according to claim 1 or 3, is characterized in that: be fixedly welded with the vertical rod sleeve pipe protruded upward above described steel platform.
6. the elevator hoistways operation platform according to claim 1 or 3, is characterized in that: be fixedly welded with the protection supporting leg stretched out below described steel platform downwards, and protection supporting leg is higher than the height of locating support collapsed state.
7. elevator hoistways operation platform according to claim 1, it is characterized in that: the rear end of the locating support of described linkage rod supporting mechanism is connected with the groove bottom steel platform frame by hinge, the middle part of locating support by V-arrangement connecting rod turntable and rod hinge connection, and the middle part of V-arrangement connecting rod turntable and steel platform hinged.
8. elevator hoistways operation platform according to claim 1, is characterized in that: described rotating shaft lever is provided with handle.
9. elevator hoistways operation platform according to claim 1, is characterized in that: tiling also welding steel on described steel platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579947.7A CN105370026B (en) | 2015-09-11 | 2015-09-11 | Elevator hoistways operation platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579947.7A CN105370026B (en) | 2015-09-11 | 2015-09-11 | Elevator hoistways operation platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370026A true CN105370026A (en) | 2016-03-02 |
| CN105370026B CN105370026B (en) | 2017-06-27 |
Family
ID=55372605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510579947.7A Expired - Fee Related CN105370026B (en) | 2015-09-11 | 2015-09-11 | Elevator hoistways operation platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370026B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013030A (en) * | 2017-05-18 | 2017-08-04 | 歌山建设集团有限公司 | Lift-on/lift-off type elevator hoistway construction platform device and the construction of lift well method |
| CN107489267A (en) * | 2017-06-21 | 2017-12-19 | 中交第公路工程局有限公司 | From firm operating platform in a kind of convenient adjustable elevator |
| CN110821162A (en) * | 2019-11-25 | 2020-02-21 | 上海宝冶集团有限公司 | Elevator shaft top plate erecting device |
| CN115162703A (en) * | 2022-08-11 | 2022-10-11 | 中建新疆建工（集团）有限公司 | Elevator shaft construction platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6722468B2 (en) * | 2002-02-01 | 2004-04-20 | James R. Albano | Suspended scaffolding system |
| CN201762974U (en) * | 2010-07-29 | 2011-03-16 | 中建三局建设工程股份有限公司 | System for simultaneous construction of upper horizontal structure and lower horizontal structure in core tube |
| CN203654696U (en) * | 2013-12-25 | 2014-06-18 | 中建一局集团第五建筑有限公司 | Profile steel operating platform for shaped elevator hoistway |
| CN204095635U (en) * | 2014-09-15 | 2015-01-14 | 中国兵器工业计算机应用技术研究所 | A kind of depopulated helicopter catch gear |
-
2015
- 2015-09-11 CN CN201510579947.7A patent/CN105370026B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6722468B2 (en) * | 2002-02-01 | 2004-04-20 | James R. Albano | Suspended scaffolding system |
| CN201762974U (en) * | 2010-07-29 | 2011-03-16 | 中建三局建设工程股份有限公司 | System for simultaneous construction of upper horizontal structure and lower horizontal structure in core tube |
| CN203654696U (en) * | 2013-12-25 | 2014-06-18 | 中建一局集团第五建筑有限公司 | Profile steel operating platform for shaped elevator hoistway |
| CN204095635U (en) * | 2014-09-15 | 2015-01-14 | 中国兵器工业计算机应用技术研究所 | A kind of depopulated helicopter catch gear |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013030A (en) * | 2017-05-18 | 2017-08-04 | 歌山建设集团有限公司 | Lift-on/lift-off type elevator hoistway construction platform device and the construction of lift well method |
| CN107013030B (en) * | 2017-05-18 | 2022-12-06 | 歌山建设集团有限公司 | Hoisting type elevator shaft construction platform device and elevator shaft construction method |
| CN107489267A (en) * | 2017-06-21 | 2017-12-19 | 中交第公路工程局有限公司 | From firm operating platform in a kind of convenient adjustable elevator |
| CN110821162A (en) * | 2019-11-25 | 2020-02-21 | 上海宝冶集团有限公司 | Elevator shaft top plate erecting device |
| CN115162703A (en) * | 2022-08-11 | 2022-10-11 | 中建新疆建工（集团）有限公司 | Elevator shaft construction platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105370026B (en) | 2017-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105370026A (en) | Lift shaft construction platform | |
| CN108867647B (en) | Multifunctional steel pipe column verticality adjusting machine for pile and column integrated construction | |
| CN205917702U (en) | Whole system of transferring of bridge deep basal pit steel sheet piling cofferdam internal stay | |
| CN105804091A (en) | Cooperative construction method of prestress combined profile steel support and earth excavation in deep foundation pit | |
| CN103866693A (en) | Installing method of reinforced concrete bowstring rod arch bridge arch ribs and hanging auxiliary bridge | |
| CN104310165A (en) | Guide rail type adhesion construction lifter and construction method thereof | |
| CN207268073U (en) | Novel flexible formwork bearing frame | |
| CN113123800A (en) | Construction method of starting base of large-diameter shield tunnel steel structure | |
| WO2020098394A1 (en) | Gob-side entry confined concrete supporting construction device and mechanized construction method | |
| CN110409378A (en) | Repair method of not cutting off the water for large channel | |
| CN210084736U (en) | A portable lifting hook for installation of people's air defense door | |
| CN104499706B (en) | Hoistway formwork platform and construction method thereof | |
| CN113309330A (en) | Auxiliary device for assembling large tank | |
| CN211229458U (en) | A operation platform for cylinder mound concrete placement construction | |
| CN210855047U (en) | Be suitable for transmission material between reverse construction method floor with small-size swing arm formula electric hoist | |
| CN111827648A (en) | Construction device and method for down-supporting type overhanging scaffold | |
| CN203846750U (en) | Buoyancy lift and turnover type external scaffolding tooling device special for installation of gas holder | |
| CN115030527B (en) | Steel structure installation equipment for portal steel frame factory building | |
| CN214570413U (en) | Special device for underground rapid lifting pipeline of mine | |
| CN105756067B (en) | A kind of method of horizontal temporary support support replacement in deep basal pit | |
| CN206220534U (en) | The pump line support meanss of concrete pumping equipment | |
| CN211037760U (en) | Novel instrument formula elevartor shaft construction operation platform | |
| CN205617771U (en) | Construction operation platform and pipe -line transportation integrated device in high residential building elevartor shaft | |
| CN210508326U (en) | Liftable well operation platform | |
| CN203320922U (en) | Supporting device for forming of elevator shaft template |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 |