CN201269230Y - Integral jacking creeping formwork hydraulic synchronous integrated control system for steel construction platform - Google Patents
Integral jacking creeping formwork hydraulic synchronous integrated control system for steel construction platform Download PDFInfo
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- CN201269230Y CN201269230Y CNU2008200586520U CN200820058652U CN201269230Y CN 201269230 Y CN201269230 Y CN 201269230Y CN U2008200586520 U CNU2008200586520 U CN U2008200586520U CN 200820058652 U CN200820058652 U CN 200820058652U CN 201269230 Y CN201269230 Y CN 201269230Y
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Abstract
The utility model provides a hydraulic synchronous integrated control system of a whole lifting clamping die of a building construction steel platform, comprising an oil tank, an oil pump, an electric motor and a plurality of sets of cylinder lifting devices. The system is provided with transmission pipeline devices with the corresponding quantity according to the number of sets of the cylinder lifting devices, and the transmission pipeline devices are respectively connected with the corresponding cylinder lifting devices. The control system has the following innovations: the oil pump has delivery ports with the corresponding quantity according to the sets of the cylinder lifting devices; the delivery ports with the corresponding quantity are connected with corresponding oil suction branches of the transmission pipeline devices; and all the delivery ports have the same rated output pressure and constant and equivalent output flow rate. The hydraulic synchronous integrated control system can well solve the problem that all the lifting machine positions of the existing construction hydraulic clamping system make non-synchronous movement with different speed, realize automatically controlling the lift speed, guarantee the smooth and synchronous lifting and simplify the structure of the system.
Description
Technical field
The utility model belongs to Hydraulic Field, specifically, is creeping formwork and creeping formwork steel platform Hydraulic Synchronizing integrated control system in the construction such as a kind of high-level structure core concrete, large bridge king-tower.
Background technique
China is high-rise in construction at present, the superelevation layer, tall and slender structure core concrete, used hydraulic climbing formwork systems such as large bridge king-tower generally are provided with two covers or two cover above jacking seats in the plane (oil cylinder lifting body) at least, because the load in the system is not quite similar on each position, the resistance that is overcome when therefore each oil cylinder jacking apparatus of creeping formwork and creeping formwork steel plateform system can be worked owing to jacking is different to cause that each oil cylinder jacking apparatus movement velocity speed differs, owing to each oil cylinder jacking apparatus movement velocity cumulative error that produces that differs will make creeping formwork and creeping formwork steel plateform system jam gently then occur, the work of can not normally climbing, heavy then damage mechanism's component of creeping formwork and creeping formwork steel plateform system, engineering construction is caused very big influence.In order to solve the problem of synchronization lifting, domestic similar products mainly rely on regular inspection of the stacking of equipment, material on strict control creeping formwork and the creeping formwork steel plateform system and operator and regular manual setting deviation, this manual type not only limited creeping formwork and creeping formwork steel plateform system function of use, increased the weight of operator's working strength, also technical solution problem fundamentally not.External some company's appliance computer adds intelligent means such as sensor and carries out synchronization control, but has high input because of equipment eventually, system complex, and it is high that operation requires, and safeguards also difficulty, can not widely be accepted by domestic enterprise.
The model utility content
Differ in order to solve present construction hydraulic climbing formwork each jacking seat in the plane of system (oil cylinder lifting body) movement velocity speed, nonsynchronous problem, the utility model provide a kind of and have realized controlling rising or falling speed automatically, guaranteed that lifting is steadily synchronous, the construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system of simplied system structure.
The utility model has adopted following technological means: a kind of construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system, comprise fuel tank, oil pump, motor and many cover oil cylinder jacking apparatus, described Hydraulic Synchronizing integrated control system is provided with the transfer conduit device of respective numbers according to the tricks of oil cylinder jacking apparatus, and it is continuous with corresponding oil cylinder jacking apparatus respectively, described every cover transfer conduit device has an oil suction branch road, an one oil return branch road and a solenoid directional control valve, described every cover oil cylinder jacking apparatus comprises a jack and a Pilot operated check valve, described jack has rodless cavity (epicoele) and rod chamber (cavity of resorption), at oil cylinder jacking apparatus ascent stage, the motor drives oil pump with hydraulic oil from the oil suction branch road of fuel tank through the transfer conduit device, solenoid directional control valve is transported to the jack rodless cavity of oil cylinder jacking apparatus, and oil return is then flowed back to fuel tank from oil cylinder jacking apparatus jack rod chamber through solenoid directional control valve and oil return branch road; In the oil cylinder jacking apparatus decline stage, the motor drives oil pump is delivered directly to hydraulic oil the jack rod chamber of oil cylinder jacking apparatus and rodless cavity fluid is flowed out through the transfer conduit device from fuel tank, get back to fuel tank through solenoid directional control valve, the oil return branch road of transfer conduit device again, wherein, described oil pump has the delivery outlet of respective numbers according to the tricks of oil cylinder jacking apparatus, and the delivery outlet of each respective numbers connects the corresponding oil suction branch road of transfer conduit device, and each delivery outlet has the identical specified delivery pressure and the output flow of constant equivalent.
In above-mentioned Hydraulic Synchronizing integrated control system, described oil pump is the radial plunger pump that flow, the output of single-candidate level pressure power such as has.
In above-mentioned Hydraulic Synchronizing integrated control system, described solenoid directional control valve is a 3-position 4-way H type valve, wherein two ports are communicated with the Pilot operated check valve of corresponding oil suction branch road and oil cylinder jacking apparatus respectively, and two ports link to each other with the rod chamber of the corresponding oil return branch road and the jack of oil cylinder jacking apparatus respectively in addition.
In above-mentioned Hydraulic Synchronizing integrated control system, cross-over connection one pressure relief valve between the oil suction branch road of each transfer conduit device and oil return branch road.
In above-mentioned Hydraulic Synchronizing integrated control system, the Pilot operated check valve of described oil cylinder jacking apparatus is a ball-valve structure, and the one end links to each other with corresponding solenoid directional control valve by high pressure hose, and the other end links to each other with the rodless cavity of jack.
In above-mentioned Hydraulic Synchronizing integrated control system, described Pilot operated check valve is provided with a pipeline that leads to the jack cylinder rod chamber in addition, this pipeline communicates with the jack rod chamber and a little is the remote control mouth, and described Pilot operated check valve remote control mouth place is provided with damper, prevents that climbing scaffold system is from the fluid impact endurance test shock that produces in the process of normally climbing under the effect of heavy load.
In above-mentioned Hydraulic Synchronizing integrated control system, on each oil suction branch road of described transfer conduit device, pressure gauge is installed, be used to monitor oil pressure.
In above-mentioned Hydraulic Synchronizing integrated control system, at described oil return branch road and fuel tank jointing return filter is installed, this return filter has cleanliness of hydraulic oil self check sender function.
In above-mentioned Hydraulic Synchronizing integrated control system, air-strainer and tank gauge are installed on described fuel tank.
Construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system of the present utility model makes it compared with prior art owing to adopted technique scheme, has the following advantages and good effect:
1, the output flow equivalent of each delivery outlet of oil pump and constant, the variation of uncontrolled point load and cause velocity variations, is implemented easily the reliability height at the synchronization accuracy height.
2, one port that communicates with the cylinder rod chamber of jack is set in the Pilot operated check valve in the oil cylinder jacking apparatus, and connect by oil pipe, when the oil cylinder jacking apparatus is in the decline stage, the cylinder rod chamber of jack begins oil-feed, the oil cylinder rodless cavity of jack is fuel-displaced, have only when the hydraulic difference in two chambeies reaches default value up and down, but Pilot operated check valve is reverse-conducting, path and buffering problem when the oil cylinder that has not only solved jack descends, and when hydraulic pipe line ran into unexpected damaged the leakage, hydraulic difference was less than system settings, and Pilot operated check valve can not reverse-conducting, the oil cylinder of jack still can support weight, has guaranteed the Security of synchronization of jacking up.
3, thoroughly avoid the error of artificial detection and scheduled conrol, reduced unsafe factor, improved safety reliability.
Description of drawings
Construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system of the present utility model is provided by following examples and accompanying drawing.
Fig. 1 is construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system one an embodiment's of the present utility model structural representation.
Embodiment
Below with reference to accompanying drawing construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system of the present utility model is described in further detail, is specially following mode of execution:
As shown in Figure 1, present embodiment is the structural representation of 4 cover oil cylinder jacking apparatus, and construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system of the present utility model comprises: fuel tank 10, level meter 20, oil pump 30, motor 40, air-strainer 50, return filter 60, pressure gauge 71～74, oil pump 81～84, solenoid directional control valve 91～94, jack 101～104, Pilot operated check valve 111～114, high pressure hose 121～124, oil suction branch road P1～P4, oil return branch road T1～T4.Oil pump 30 of the present utility model adopts radial plunger pump to realize, this radial plunger pump 30 has 4 delivery outlets, output waits the hydraulic oil of flow single-candidate level pressure power respectively, and the variation of uncontrolled point load and cause velocity variations is to realize the synchronization lifting of 4 cover oil cylinder jacking apparatus.
As shown in Figure 1, the Hydraulic Synchronizing integrated control system has 4 cover oil cylinder jacking apparatus, relative set 4 cover transfer conduit devices, and it is continuous with corresponding oil cylinder jacking apparatus respectively, described every cover transfer conduit device has an oil suction branch road, an oil return branch road and a solenoid directional control valve, every cover oil cylinder jacking apparatus comprises a jack and a Pilot operated check valve, and jack has rodless cavity (epicoele) and rod chamber (cavity of resorption).With a cover oil cylinder jacking apparatus wherein is example, at oil cylinder jacking apparatus ascent stage, motor 40 drive oil pumps 30 with hydraulic oil from fuel tank 10 through the oil suction branch road P1 of transfer conduit device, jack 101 rodless cavities that solenoid directional control valve 91 is transported to the oil cylinder jacking apparatus, oil return is then flowed back to fuel tank 10 from oil cylinder jacking apparatus jack 101 rod chambers through solenoid directional control valve 91 and oil return branch road T1; In the oil cylinder jacking apparatus decline stage, motor 40 drives oil pump 30 hydraulic oil is delivered directly to jack 101 rod chambers of oil cylinder jacking apparatus and rodless cavity liquid oil is flowed out through the transfer conduit device from fuel tank 10, again through the solenoid directional control valve 91 of transfer conduit device, oil return branch road T1 gets back to fuel tank 10, tricks according to present embodiment oil cylinder jacking apparatus, described oil pump (radial plunger pump) has 4 delivery outlets, each delivery outlet connects the corresponding oil suction branch road P1～P4 of transfer conduit device, and the specified delivery pressure of each delivery outlet is identical and equivalent and constant output flow arranged.
Still be example with a cover oil cylinder jacking apparatus wherein, Pilot operated check valve 111 1 ports are connected with the oil cylinder rodless cavity of jack 101 by an oil pipe, the other end communicates with solenoid directional control valve 91 by high pressure hose 121, oil cylinder jacking apparatus ascent stage, hydraulic oil is the oil cylinder rodless cavity that flows to jack 101 from solenoid directional control valve 91, Pilot operated check valve 111 also has the cylinder rod chamber of a port and jack 101 to be connected, be called remote control mouth (seeing Z end points among the figure), and described Pilot operated check valve 111 remote control mouth Z places are provided with damper, prevent that climbing scaffold system is from the fluid impact endurance test shock that produces in the process of normally climbing under the effect of heavy load.Instantly depression of order section, because hydraulic oil is the rod chamber that flows to jack 101 from transmitting set, therefore remote control mouth Z can reflect the rod chamber hydraulic pressure situation of jack 101 at any time, increase gradually along with the rod chamber oil pressure of jack 101, two chamber pressure reduction can reach the critical value of system regulation up and down, this moment, Pilot operated check valve 111 can reverse-conducting, make the oil cylinder jacking apparatus descend smoothly, in fact also guaranteed the level and smooth of decline, and when hydraulic pipe line runs into the damaged leakage of accident, hydraulic difference is less than system settings, and Pilot operated check valve 111 can not reverse-conducting, and the oil cylinder of jack 101 still can support weight, guaranteed the Security of synchronization of jacking up, because if two chamber rate of descent are excessive up and down, two chamber hydraulic difference are greater than setting value up and down, and Pilot operated check valve 111 can only forward conduction; Pilot operated check valve 111 is a ball-valve structure, and pilot operated, hydraulic pressure is directly moving, leaks almost nilly, and also have can be with a function of carrying replacing high pressure hose 121 when load support for Pilot operated check valve 111 simultaneously.
Solenoid directional control valve 91～94 in whole system, play flow of pressurized to transformation, as shown in Figure 1, solenoid directional control valve 91～94 is selected H type three position four-way electromagnetic valve for use.
In every suit oil cylinder jacking apparatus and its corresponding oil suction branch road and oil return branch road, the pressure relief valve front end all is provided with pressure gauge, be provided with pressure gauge 71 as pressure relief valve 81 front ends, by regulating the working pressure that pressure relief valve 81 can initialization system, when causing overpressure owing to load variations, system's automatic overflow is guaranteed the safety of each workpiece of system; In the oil cylinder jacking apparatus uphill process, too fast when the hydraulic oil flow velocity, when pressure gauge 71 tests out abnormal pressure, also can discharge unnecessary oil mass through the oil return branch road through safety pressure valve 81.
According to the size of jacking load, can select motor, oil pump and the jack of different capacity.Select 10 tons (during 200bar) of carrying for use as jack, range is 250mm.
Present embodiment is the structure of 4 cover oil cylinder jacking apparatus, and wherein the working principle of every suit oil cylinder jacking apparatus is all as above-mentioned.
Needs according to working face, it is the Hydraulic Synchronizing integrated control system with a plurality of oil cylinder jacking apparatus that construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system of the present utility model is easy to shift design, such as has the Hydraulic Synchronizing integrated control system of 3～8 oil cylinder jacking apparatus, the radial plunger pump of this Hydraulic Synchronizing integrated control system is corresponding to have 3～8 delivery outlets, and each delivery outlet has the identical specified delivery pressure and the output flow of constant equivalent, the variation of uncontrolled point load and cause velocity variations can be satisfied the requirement of construction jacking fully.
Claims (10)
1. construction steel platform and integrally jacking creeping formwork Hydraulic Synchronizing integrated control system, comprise fuel tank, oil pump, motor and many cover oil cylinder jacking apparatus, described Hydraulic Synchronizing integrated control system is provided with the transfer conduit device of respective numbers according to the tricks of oil cylinder jacking apparatus, and it is continuous with corresponding oil cylinder jacking apparatus respectively, described every cover transfer conduit device has an oil suction branch road, an one oil return branch road and a solenoid directional control valve, described every cover oil cylinder jacking apparatus comprises a jack and a Pilot operated check valve, described jack has rodless cavity and rod chamber, at oil cylinder jacking apparatus ascent stage, the motor drives oil pump with hydraulic oil from the oil suction branch road of fuel tank through the transfer conduit device, solenoid directional control valve is transported to the jack rodless cavity of oil cylinder jacking apparatus, and oil return is then flowed back to fuel tank from oil cylinder jacking apparatus jack rod chamber through solenoid directional control valve and oil return branch road; In the oil cylinder jacking apparatus decline stage, the motor drives oil pump is delivered directly to hydraulic oil the jack rod chamber of oil cylinder jacking apparatus and rodless cavity fluid is flowed out through the transfer conduit device from fuel tank, get back to fuel tank through solenoid directional control valve, the oil return branch road of transfer conduit device again, it is characterized in that: described oil pump has the delivery outlet of respective numbers according to the tricks of oil cylinder jacking apparatus, and the delivery outlet of each respective numbers connects the corresponding oil suction branch road of transfer conduit device, and each delivery outlet has the same high specified delivery pressure and the output flow of constant equivalent.
2. Hydraulic Synchronizing integrated control system as claimed in claim 1 is characterized in that, described oil pump is the radial plunger pump that the output of flow single-candidate level pressure power such as has.
3. Hydraulic Synchronizing integrated control system as claimed in claim 1, it is characterized in that, described solenoid directional control valve is a 3-position 4-way H type valve, wherein two ports are communicated with the Pilot operated check valve of corresponding oil suction branch road and oil cylinder jacking apparatus respectively, and two ports link to each other with the rod chamber of the corresponding oil return branch road and the jack of oil cylinder jacking apparatus respectively in addition.
4. Hydraulic Synchronizing integrated control system as claimed in claim 1 is characterized in that, cross-over connection one pressure relief valve between the oil suction branch road of each transfer conduit device and oil return branch road.
5. Hydraulic Synchronizing integrated control system as claimed in claim 1 is characterized in that the Pilot operated check valve of described oil cylinder jacking apparatus is a ball-valve structure, and the one end links to each other with corresponding solenoid directional control valve by high pressure hose, and the other end links to each other with the rodless cavity of jack.
6. Hydraulic Synchronizing integrated control system as claimed in claim 5 is characterized in that, described Pilot operated check valve is provided with a pipeline that leads to the jack cylinder rod chamber in addition, and this pipeline communicates with the jack rod chamber and a little is the remote control mouth.
7. Hydraulic Synchronizing integrated control system as claimed in claim 6 is characterized in that, the place is provided with damper at Pilot operated check valve remote control mouth, prevents that climbing scaffold system is from the fluid impact endurance test shock that produces in the process of normally climbing under the effect of heavy load.
8. Hydraulic Synchronizing integrated control system as claimed in claim 1 is characterized in that, on each oil suction branch road of described transfer conduit device pressure gauge is installed, and is used to monitor oil pressure.
9. Hydraulic Synchronizing integrated control system as claimed in claim 1 is characterized in that, at described oil return branch road and fuel tank jointing return filter is installed, and this return filter has cleanliness of hydraulic oil self check sender function.
10. Hydraulic Synchronizing integrated control system as claimed in claim 1 is characterized in that, air-strainer and tank gauge are installed on described fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200586520U CN201269230Y (en) | 2008-05-20 | 2008-05-20 | Integral jacking creeping formwork hydraulic synchronous integrated control system for steel construction platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200586520U CN201269230Y (en) | 2008-05-20 | 2008-05-20 | Integral jacking creeping formwork hydraulic synchronous integrated control system for steel construction platform |
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| CN201269230Y true CN201269230Y (en) | 2009-07-08 |
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Cited By (15)
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| CN101799023A (en) * | 2010-02-11 | 2010-08-11 | 上海建工（集团）总公司 | Self-adaptive hydraulic servo system of axial force of foundation pit steel support |
| WO2011063695A1 (en) * | 2009-11-24 | 2011-06-03 | 中冶赛迪工程技术股份有限公司 | Combined type hydraulic control system for top distributing gear of blast furnace |
| CN103015334A (en) * | 2012-12-26 | 2013-04-03 | 中铁二十四局集团有限公司 | Synchronous-progress oil jack control system and application method thereof |
| CN103133441A (en) * | 2013-03-19 | 2013-06-05 | 中联重科股份有限公司 | Double hydraulic devices and speed control method, equipment and system thereof |
| CN104828699A (en) * | 2014-10-17 | 2015-08-12 | 北汽福田汽车股份有限公司 | Hydraulic control system of crane and the crane therewith |
| CN105605005A (en) * | 2015-11-25 | 2016-05-25 | 上海电气液压气动有限公司 | Oil cylinder hydraulic driving system of oversized heavy equipment |
| CN105805067A (en) * | 2016-04-29 | 2016-07-27 | 上海宏信设备工程有限公司 | Device for applying force to multiple points of steel supporting shaft synchronously |
| CN106149730A (en) * | 2015-04-08 | 2016-11-23 | 中国建筑第八工程局有限公司 | A kind of wireless remote control system of steel support shaft power automatic control equipment |
| CN106895034A (en) * | 2017-04-19 | 2017-06-27 | 沈阳建筑大学 | A kind of asynchronous circulation jack-up system of Large Construction platform multi-hydraulic-cylinder elementary errors |
| CN111255776A (en) * | 2020-05-07 | 2020-06-09 | 上海建工集团股份有限公司 | Hydraulic control system and method for whole steel platform formwork of super high-rise building |
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| CN113550557A (en) * | 2021-07-27 | 2021-10-26 | 中国建筑一局(集团)有限公司 | Creeping formwork for high-rise building construction and hydraulic creeping formwork construction process |
| CN113775163A (en) * | 2021-09-28 | 2021-12-10 | 中国十七冶集团有限公司 | Sectional hydraulic type climbing system and method for climbing outside climbing frame |
| CN113864260A (en) * | 2021-08-24 | 2021-12-31 | 宣化钢铁集团有限责任公司 | Hydraulic control device for lifting oil cylinder of stepping heating furnace |
| CN114109946A (en) * | 2021-12-03 | 2022-03-01 | 中船重工重庆液压机电有限公司 | Multi-point synchronous positioning hydraulic device for jack and control method |
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2008
- 2008-05-20 CN CNU2008200586520U patent/CN201269230Y/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011063695A1 (en) * | 2009-11-24 | 2011-06-03 | 中冶赛迪工程技术股份有限公司 | Combined type hydraulic control system for top distributing gear of blast furnace |
| CN101725581B (en) * | 2009-11-24 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Composite hydraulic control system of blast-furnace top distributing device |
| CN101799023A (en) * | 2010-02-11 | 2010-08-11 | 上海建工（集团）总公司 | Self-adaptive hydraulic servo system of axial force of foundation pit steel support |
| CN103015334A (en) * | 2012-12-26 | 2013-04-03 | 中铁二十四局集团有限公司 | Synchronous-progress oil jack control system and application method thereof |
| CN103015334B (en) * | 2012-12-26 | 2014-12-03 | 中铁二十四局集团有限公司 | Synchronous-progress oil jack control system and application method thereof |
| CN103133441A (en) * | 2013-03-19 | 2013-06-05 | 中联重科股份有限公司 | Double hydraulic devices and speed control method, equipment and system thereof |
| CN104828699B (en) * | 2014-10-17 | 2017-06-06 | 北汽福田汽车股份有限公司 | The hydraulic control system of crane and the crane with it |
| CN104828699A (en) * | 2014-10-17 | 2015-08-12 | 北汽福田汽车股份有限公司 | Hydraulic control system of crane and the crane therewith |
| CN106149730B (en) * | 2015-04-08 | 2018-08-24 | 中国建筑第八工程局有限公司 | A kind of wireless remote control system of bracing members axle power automatic control equipment |
| CN106149730A (en) * | 2015-04-08 | 2016-11-23 | 中国建筑第八工程局有限公司 | A kind of wireless remote control system of steel support shaft power automatic control equipment |
| CN105605005A (en) * | 2015-11-25 | 2016-05-25 | 上海电气液压气动有限公司 | Oil cylinder hydraulic driving system of oversized heavy equipment |
| CN105805067A (en) * | 2016-04-29 | 2016-07-27 | 上海宏信设备工程有限公司 | Device for applying force to multiple points of steel supporting shaft synchronously |
| CN106895034A (en) * | 2017-04-19 | 2017-06-27 | 沈阳建筑大学 | A kind of asynchronous circulation jack-up system of Large Construction platform multi-hydraulic-cylinder elementary errors |
| CN106895034B (en) * | 2017-04-19 | 2018-04-03 | 沈阳建筑大学 | A kind of asynchronous circulation jack-up system of Large Construction platform multi-hydraulic-cylinder elementary errors |
| CN111255776B (en) * | 2020-05-07 | 2020-07-17 | 上海建工集团股份有限公司 | Hydraulic control system and method for whole steel platform formwork of super high-rise building |
| CN111255776A (en) * | 2020-05-07 | 2020-06-09 | 上海建工集团股份有限公司 | Hydraulic control system and method for whole steel platform formwork of super high-rise building |
| CN113312960A (en) * | 2021-03-26 | 2021-08-27 | 刘汉永 | Face recognition system based on smart city and operation method thereof |
| CN113550557A (en) * | 2021-07-27 | 2021-10-26 | 中国建筑一局(集团)有限公司 | Creeping formwork for high-rise building construction and hydraulic creeping formwork construction process |
| CN113864260A (en) * | 2021-08-24 | 2021-12-31 | 宣化钢铁集团有限责任公司 | Hydraulic control device for lifting oil cylinder of stepping heating furnace |
| CN113864260B (en) * | 2021-08-24 | 2024-02-02 | 宣化钢铁集团有限责任公司 | Hydraulic control device of lifting oil cylinder of stepping heating furnace |
| CN113775163A (en) * | 2021-09-28 | 2021-12-10 | 中国十七冶集团有限公司 | Sectional hydraulic type climbing system and method for climbing outside climbing frame |
| CN114109946A (en) * | 2021-12-03 | 2022-03-01 | 中船重工重庆液压机电有限公司 | Multi-point synchronous positioning hydraulic device for jack and control method |
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