CN106638328A - Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion - Google Patents
Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion Download PDFInfo
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- CN106638328A CN106638328A CN201710060365.7A CN201710060365A CN106638328A CN 106638328 A CN106638328 A CN 106638328A CN 201710060365 A CN201710060365 A CN 201710060365A CN 106638328 A CN106638328 A CN 106638328A
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- suo
- jack
- power unit
- hoisting
- hydraulic power
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Structural Engineering (AREA)
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Abstract
The invention provides a synchronous hydro-electric control cable force conversion system for suspender replacement. The system comprises a centralized control computer, a main control box, and multiple hydraulic pump station systems for temporary bottom-carrying lifting device cable force conversion. Each hydraulic pump station system for temporary bottom-carrying lifting device cable force conversion comprises a set of hydraulic pump stations and four jacks. A displacement sensor and a pressure sensor are installed on each jack. The four jacks are installed on a temporary bottom-carrying lifting device, and the jacks are connected with corresponding switching valves on the hydraulic pump stations through oil inflow oil pipes and oil return oil pipes respectively. The displacement sensors and the pressure sensors are in circuit connection with the main control box. The main control box is in circuit connection with each hydraulic pump station. The centralized control computer is connected with the main control box. The system can achieve automatic hydro-electric control cable force loading and unloading of the temporary bottom-carrying lifting device to complete the cable force conversion process, the automation degree is high, the synchronous control precision is high, the work efficiency is high, safety and reliability are achieved, and standardized construction is convenient.
Description
Technical field
The present invention relates to a kind of bridge construction machinery and its construction method, particularly a kind of synchronous liquid for suspender replacement
Electric control Suo Li converting systems and its method for interim pocket device for hoisting Suo Li conversions.
Background technology
The list for being presently used for suspender replacement covers the interim rope of the big four jack Load-unloads of multi-configuration of interim pocket device for hoisting, rope
Power conversion method coordinates flow divider to realize multiple stage jack synchronization action with manual hand manipulation's electric oil pump mostly, and shortcoming is
Jack displacement need to adopt ruler manual measurement without measurement apparatus；Pressure fuel pump reading is mechanical oil-pressure table, needs artificial reading；
The uninterrupted of hydraulic oil and direction manually operate inlet valve and delivery valve control；Cover the multiple stage between interim pocket device for hoisting more
Oil pump needs manual site to monitor without communication, and realizes that commander in chief coordinates by intercom communication, and more synchronous precision is realized on top
It is low.In addition, input operating personnel are more, operating process is affected by human users' mass, when there is the asynchronous situation of jack
Need independent jack oil pressure, the adjustment of oil speed, low construction efficiency, it is difficult to realize the Suo Li conversions of quick interim pocket device for hoisting.
The content of the invention
It is an object of the present invention to provide a kind of synchronous liquid electric control Suo Li converting systems for suspender replacement and its being used for
The method of interim pocket device for hoisting Suo Li conversions, realizes that interim pocket device for hoisting automatic liquid is automatically controlled using the system and its construction method
Suo Li loadings processed, unloading complete Suo Li transfer processes, and high degree of automation, synchronous control accuracy is high, cost of labor less investment, work
Effect is high, safe and reliable, is easy to standardized construction, to solve the problems referred to above of prior art presence.
To solve the above problems, the technical solution used in the present invention is：A kind of synchronous liquid electric control for suspender replacement
Suo Li converting systems, it is characterised in that：
The synchronous liquid electric control Suo Li converting systems include that centralized Control computer, Main Control Tank, n are covered for interim pocket device for hoisting rope
The hydraulic power unit system of power conversion；
Often cover the hydraulic power unit system changed for interim pocket device for hoisting Suo Li and include one group of hydraulic power unit and four jack,
Displacement transducer and pressure sensor are mounted on every jack；Four jack are arranged on interim pocket device for hoisting
On, every jack is by the switch valve connection corresponding with hydraulic power unit respectively of oil-feed oil pipe and oil return oil pipe；Institute's rheme
Displacement sensor connects data wire and is connected with Main Control Tank circuit by displacement transducer；The pressure sensor passes through pressure sensor
Connection data wire is connected with Main Control Tank circuit；
The hydraulic power unit is used for action, displacement and the pressure of corresponding four jack of independent control；
The Main Control Tank is connected respectively by communication data line with every hydraulic power unit circuit, for receiving centralized Control computer
Order and send instruction to hydraulic power unit, so as to control action, pressure and the displacement of jack, realize jack synchronous tension
Or the Suo Li controls put；
The centralized Control computer is connected by Ethernet data line with Main Control Tank, for realizing human-computer interaction interface, according to
The detection data of displacement transducer, pressure sensor, to Main Control Tank order is sent, so as to control each switch of every group of hydraulic power unit
Valve comes the pressure of each jack of Synchronization Control and displacement, realizes the action of each jack；Simultaneously and monitor each hydraulic power unit system
The running status of system, when monitoring data asynchronism is beyond setting limit value, sends alarm, realizes that manual hand manipulation adjusts
Section and program automatic mode adjust to realize that interim pocket device for hoisting Suo Li loadings, unloading complete Suo Li transfer processes；
The n is the integer more than or equal to 1, and the span of n is：N is the arbitrary integer between 1 to 20.
The further technical scheme of the described synchronous liquid electric control Suo Li converting systems for suspender replacement is：Institute's rheme
Displacement sensor is arranged on per platform very heavy top side face, and one end of displacement transducer is fixed on the counter-force supporting surface of jack, another
End holds out against the backing plate bottom surface that jack piston and interim pocket are hung between instrument nut；The pressure sensor is arranged on per platform thousand
Backing plate and interim pocket above the piston of jin top is hung between instrument nut.
Related another technical scheme is：A kind of method of interim pocket device for hoisting Suo Li conversions, the method is using above-mentioned
For the synchronous liquid electric control Suo Li converting systems of suspender replacement, interim pocket device for hoisting automatic liquid electric control Suo Lijia is realized
Carry, unloading completes the method that Suo Li is changed, the method is first with the centralized Control in synchronous liquid electric control Suo Li converting systems
Computer each switch valve of every group of hydraulic power unit is controlled come the pressure of Synchronization Control each jack loading by PLC programmed algorithms and
Displacement, is alternately accomplished the hierarchical loading of interim pocket device for hoisting and the load shedding of old suspension rod to realize that Suo Li is changed for the first time, then
Remove old suspension rod and new suspension rod is installed, finally passed through using the centralized Control computer in synchronous liquid electric control Suo Li converting systems
PLC programmed algorithms control pressure and the displacement that each switch valve of every group of hydraulic power unit carrys out each lifting jack unloading of Synchronization Control, alternately
The load shedding of interim pocket device for hoisting and the hierarchical loading of new suspension rod are completed to realize that Suo Li second is changed, its concrete grammar and
Step is：
A, centralized Control computer control each jack synchronization action hierarchical loading of each set hydraulic power unit system by Main Control Tank；
The load shedding of B, the hierarchical loading for being alternately accomplished interim pocket device for hoisting and old suspension rod is changed for the first time with realizing Suo Li；
C, the old suspension rod of dismounting and the new suspension rod of installation；
D, centralized Control computer control each jack synchronization action load shedding of each set hydraulic power unit system by Main Control Tank；
The hierarchical loading of E, the load shedding for being alternately accomplished interim pocket device for hoisting and new suspension rod is changed for second with realizing Suo Li；
F, the interim pocket device for hoisting Suo Li of next group of suspender replacement change repeat the above steps A～E.
Due to taking above technical scheme, the present invention for suspender replacement synchronous liquid electric control Suo Li converting systems and
Its construction method has the characteristics that and beneficial effect：
Compared with existing manually operated electric oil pump coordinates flow divider to make multiple stage jack synchronization action realize that Suo Li is changed, this
Bright advantage is that centralized Control computer 1 is controlled often to cover each switch valve of hydraulic power unit 5 by PLC programmed algorithms and controlled come synchronous
Make pressure and the displacement of each jack, by displacement transducer 7, pressure sensor 8 monitoring realizing the action of each jack
（Load or unload）.Centralized Control computer 1 monitors each covering for the lifting of interim pocket by software configuration dynamic interface on screen
The hydraulic power unit system of Suo Li conversions is put, when monitoring data asynchronism is beyond setting limit value, alarm is sent, people is capable of achieving
The manually operated regulation of work and program automatic mode adjust to realize that it is converted that interim pocket device for hoisting Suo Li is loaded, unloading completes Suo Li
Journey.High degree of automation, synchronous control accuracy is high, cost of labor less investment, and work efficiency is high, safe and reliable, is easy to standardized construction.
The quick Suo Li conversions of present invention pocket device for hoisting interim suitable for suspender replacement engineering.
Below, in conjunction with the accompanying drawings and embodiments to the synchronous liquid electric control Suo Li converting systems for suspender replacement of the present invention
And its technical characteristic of the method changed for interim pocket device for hoisting Suo Li is further described.
Description of the drawings
Fig. 1 is a kind of structural representation of synchronous liquid electric control Suo Li converting systems for suspender replacement of embodiment one
Figure；
Fig. 2 is a kind of scheme of installation of synchronous liquid electric control Suo Li converting systems for suspender replacement of the present invention；
Fig. 3 is the enlarged drawing of A in Fig. 2.
In figure：
1- centralized Control computers, 2- Ethernet data lines, 3- Main Control Tanks, 4- communication data lines, 5- hydraulic power units；
61st, 62,63,64- jack, 7- displacement transducers, 8- pressure sensors, 9- oil-feed oil pipes, 10- oil return oil pipes, 11- faces
When pocket device for hoisting；
A1, A2, A3, A4- hydraulic power unit system.
Specific embodiment
Embodiment one：
A kind of synchronous liquid electric control Suo Li converting systems for suspender replacement, as shown in figure 1, the synchronous liquid electric control Suo Li turns
System is changed including centralized Control computer 1,3,4 sets of hydraulic power unit systems for interim pocket device for hoisting Suo Li conversions of Main Control Tank
A1、A2、A3、A4；
Often cover interim pocket device for hoisting configuration One hydraulic pump station system；Often cover the hydraulic pump for interim pocket device for hoisting Suo Li conversions
System of standing includes one group of hydraulic power unit 5 and four jack 61,62,63,64, hydraulic power unit 5 independent control, four jack
Action, pressure and displacement；Displacement transducer 7 and pressure sensor 8 are provided with every jack；Institute's displacement sensors
7 are arranged on per platform very heavy top side face, one end of displacement transducer 7（That is lower end）It is fixed on the counter-force supporting surface of jack（I.e.
Interim pocket device for hoisting top surface）, the other end（That is upper end）Hold out against jack piston and interim pocket is hung under the backing plate between instrument nut
Bottom surface；The displacement transducer 7 is used to detect displacement during jack load or unload；The pressure sensor 8 is arranged on per platform
Backing plate and interim pocket above jack piston is hung between instrument nut；The pressure sensor 8 be used for detect jack load or
Pressure during unloading；Four jack are arranged on interim pocket device for hoisting 11（Referring to Fig. 2, Fig. 3）, every jack pass through into
The switch valve connection corresponding with hydraulic power unit 5 respectively of oil pipe 9 and oil return oil pipe 10；Institute's displacement sensors 7 pass through displacement
Sensor connects data wire（Do not mark in figure）It is connected with the circuit of Main Control Tank 3；The pressure sensor 8 is connected by pressure sensor
Connect data wire（Do not mark in figure）It is connected with the circuit of Main Control Tank 3；
The hydraulic power unit 5 can independently monitor action, displacement and the pressure of corresponding 4 jack；
The Main Control Tank 3 is connected respectively by communication data line 4 with every circuit of hydraulic power unit 5, based on receiving centralized Control
The order of calculation machine 1 and instruction is sent to hydraulic power unit 5, so as to control action, pressure and the displacement of jack, realize that jack is same
The Suo Li controls opened are put in step tensioning；
The centralized Control computer 1 is connected by Ethernet data line 2 with Main Control Tank 3, for realizing human-computer interaction interface, root
According to displacement transducer, the detection data of pressure sensor, order is sent to Main Control Tank 3, liquid is often covered by the control of PLC programmed algorithms
Each switch valve at press pump station 5 comes the pressure of each jack of Synchronization Control and displacement, realizes the action of each jack（Loading is unloaded
Carry）.Centralized Control computer 1 also monitors the operation shape of each set hydraulic power unit system by software configuration dynamic interface on screen
State, when monitoring data asynchronism is beyond setting limit value, sends alarm, is capable of achieving manual hand manipulation and adjusts and program
Automatic mode adjusts to realize that interim pocket device for hoisting Suo Li loadings, unloading complete Suo Li transfer processes.
As one kind conversion of the embodiment of the present invention, the hydraulic power unit system for interim pocket device for hoisting Suo Li conversions
Tricks can also increase or decrease, can be according to the quantity of interim pocket device for hoisting and Specific construction situation depending on, generally,
The span of tricks n of hydraulic power unit system is：N is the arbitrary integer between 1 to 20.
In the present embodiment, the centralized Control computer of the synchronous liquid electric control Suo Li converting systems for suspender replacement is constituted
1st, Main Control Tank 3, hydraulic power unit 5, jack, displacement transducer 7, pressure sensor 8 are all the products that can have been bought on the market, its tool
Body structure is repeated no more.
Embodiment two：
A kind of method of interim pocket device for hoisting Suo Li conversions, it is to utilize the synchronous liquid electricity for being used for suspender replacement described in embodiment one
Force in control cable converting system realizes that interim pocket device for hoisting automatic liquid electric control Suo Li loadings, unloading complete the side of Suo Li conversions
Method, i.e.,：The liquid of interim pocket device for hoisting is often covered by the control of PLC programmed algorithms using centralized Control computer 1 first with the system
Each switch valve at press pump station 5 comes the pressure of each jack loading of Synchronization Control and displacement, is alternately accomplished dividing for interim pocket device for hoisting
The load shedding of level loading and old suspension rod is changed for the first time with realizing Suo Li, then is removed old suspension rod and installed new suspension rod, last profit
Adopt centralized Control computer 1 that each of the hydraulic power unit 5 of interim pocket device for hoisting is often covered by the control of PLC programmed algorithms with the system
Switch valve comes the pressure of each lifting jack unloading of Synchronization Control and displacement, is alternately accomplished the load shedding of interim pocket device for hoisting and newly hangs
The hierarchical loading of bar is changed for second with realizing Suo Li, and its concrete grammar and step are：
A, centralized Control computer 1 are added by each jack synchronization action classification that Main Control Tank 3 controls each set hydraulic power unit system
Carry；Specifically, the reality that centralized Control computer 1 is transmitted according to each jack displacement transducer 7 and pressure sensor 8 that receive
When measured value, by PLC programmed algorithms control often cover interim pocket device for hoisting hydraulic power unit 5 each switch valve it is each come Synchronization Control
The pressure of jack loading and displacement；The operation shape of each set hydraulic power unit system is monitored by software configuration dynamic interface on screen
State, when monitoring data asynchronism exceeds setting limit value, sends alarm, is capable of achieving manual hand manipulation and adjusts with program certainly
Dynamic mode tuning realizes each jack synchronization action hierarchical loading；
The load shedding of B, the hierarchical loading for being alternately accomplished interim pocket device for hoisting and old suspension rod is changed for the first time with realizing Suo Li；
C, the old suspension rod of dismounting and the new suspension rod of installation；
D, centralized Control computer 1 are unloaded by each jack synchronization action classification that Main Control Tank 3 controls each set hydraulic power unit system
Carry；Specifically, the reality that centralized Control computer 1 is transmitted according to each jack displacement transducer 7 and pressure sensor 8 that receive
When measured value, by PLC programmed algorithms control often cover interim pocket device for hoisting hydraulic power unit 5 each switch valve it is each come Synchronization Control
The pressure of lifting jack unloading and displacement；Each set hydraulic power unit system is monitored by software configuration dynamic interface on screen, works as monitoring
Data asynchronism sends alarm beyond setting limit value, is capable of achieving manual hand manipulation's regulation and program automatic mode is adjusted
Section realizes each jack synchronization action load shedding；
The hierarchical loading of E, the load shedding for being alternately accomplished interim pocket device for hoisting and new suspension rod is changed for second with realizing Suo Li；
F, the interim pocket device for hoisting Suo Li of next group of suspender replacement change repeat the above steps A～E.
Claims (3)
1. a kind of synchronous liquid electric control Suo Li converting systems for suspender replacement, it is characterised in that：
The synchronous liquid electric control Suo Li converting systems include centralized Control computer（1）, Main Control Tank（3）, n covers and hung for interim pocket
The hydraulic power unit system of device Suo Li conversions；
Often cover the hydraulic power unit system changed for interim pocket device for hoisting Suo Li and include one group of hydraulic power unit（5）It is very heavy with four
Top（61、62、63、64）, on every jack displacement transducer is mounted on（7）And pressure sensor（8）；Described four very heavy
Top is arranged on interim pocket device for hoisting（11）On, every jack passes through oil-feed oil pipe（9）With oil return oil pipe（10）Respectively with liquid
Press pump station（5）Upper corresponding switch valve connection；Institute's displacement sensors（7）Data wire and Main Control Tank are connected by displacement transducer
（3）Circuit connects；The pressure sensor（8）Data wire and Main Control Tank are connected by pressure sensor（3）Circuit connects；
The hydraulic power unit（5）For the action of corresponding four jack of independent control, displacement and pressure；
The Main Control Tank（3）By communication data line（4）Respectively with every hydraulic power unit（5）Circuit connects, for receiving concentration
Control computer（1）Order and to hydraulic power unit（5）Instruction is sent, it is real so as to control action, pressure and the displacement of jack
Existing jack synchronous tension puts the Suo Li controls opened；
The centralized Control computer（1）By Ethernet data line（2）With Main Control Tank（3）Connection, for realizing man-machine interaction
Interface, according to displacement transducer（7）, pressure sensor（8）Detection data, to Main Control Tank（3）Order is sent, it is every so as to control
Group hydraulic power unit（5）Each switch valve come pressure and the displacement of each jack of Synchronization Control, realize the action of each jack；Simultaneously
And the running status of each hydraulic power unit system is monitored, when monitoring data asynchronism is beyond setting limit value, sends warning and carry
Show, realize that manual hand manipulation adjusts and program automatic mode adjusts to realize that interim pocket device for hoisting Suo Li loadings, unloading are completed
Suo Li transfer processes；
The n is the integer more than or equal to 1, and the span of n is：N is the arbitrary integer between 1 to 20.
2. a kind of synchronous liquid electric control Suo Li converting systems for suspender replacement as claimed in claim 1, it is characterised in that：
Institute's displacement sensors（7）Installed in very heavy top side face, displacement transducer per platform（7）One end be fixed on the counter-force of jack
On support face, the other end holds out against the backing plate bottom surface that jack piston and interim pocket are hung between instrument nut；The pressure sensor
（8）Backing plate and interim pocket above every jack piston is hung between instrument nut.
3. a kind of method that interim pocket device for hoisting Suo Li is changed, it is characterised in that：The method is to utilize be used for described in claim 1
The synchronous liquid electric control Suo Li converting systems of suspender replacement, realize interim pocket device for hoisting automatic liquid electric control Suo Li loadings, unload
The method that load completes Suo Li conversions, the method is first with the centralized Control computer in synchronous liquid electric control Suo Li converting systems
（1）Every group of hydraulic power unit is controlled by PLC programmed algorithms（5）Each switch valve come the loading of Synchronization Control each jack pressure and
Displacement, is alternately accomplished the hierarchical loading of interim pocket device for hoisting and the load shedding of old suspension rod to realize that Suo Li is changed for the first time, then
Remove old suspension rod and new suspension rod is installed, finally using the centralized Control computer in synchronous liquid electric control Suo Li converting systems（1）
Every group of hydraulic power unit is controlled by PLC programmed algorithms（5）Each switch valve come pressure and the position of each lifting jack unloading of Synchronization Control
Move, be alternately accomplished the load shedding of interim pocket device for hoisting and the hierarchical loading of new suspension rod to realize that Suo Li is changed for second, its step
Suddenly it is：
A, centralized Control computer（1）By Main Control Tank（3）Each jack synchronization action point of each set hydraulic power unit system of control
Level loading；
The load shedding of B, the hierarchical loading for being alternately accomplished interim pocket device for hoisting and old suspension rod is changed for the first time with realizing Suo Li；
C, the old suspension rod of dismounting and the new suspension rod of installation；
D, centralized Control computer（1）By Main Control Tank（3）Each jack synchronization action point of each set hydraulic power unit system of control
Level unloading；
The hierarchical loading of E, the load shedding for being alternately accomplished interim pocket device for hoisting and new suspension rod is changed for second with realizing Suo Li；
F, the interim pocket device for hoisting Suo Li of next group of suspender replacement change repeat the above steps A～E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060365.7A CN106638328A (en) | 2017-01-24 | 2017-01-24 | Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060365.7A CN106638328A (en) | 2017-01-24 | 2017-01-24 | Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion |
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| Publication Number | Publication Date |
|---|---|
| CN106638328A true CN106638328A (en) | 2017-05-10 |
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ID=58841373
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710060365.7A Pending CN106638328A (en) | 2017-01-24 | 2017-01-24 | Synchronous hydro-electric control cable force conversion system for suspender replacement and method for temporary bottom-carrying lifting device cable force conversion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408637A (en) * | 2018-04-11 | 2018-08-17 | 中国人民解放军第五七零工厂 | Multi-station synchronous lift control system and operating method for aircraft lifting and landing |
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|---|---|---|---|---|
| JP2007126848A (en) * | 2005-11-02 | 2007-05-24 | Mitsubishi Heavy Industries Bridge & Steel Structures Engineering Co Ltd | Aseismatic repair method of existing bridge |
| CN102116012A (en) * | 2009-12-30 | 2011-07-06 | 上海天演建筑物移位工程有限公司 | Suspender replacement method for tie bar type overpass bridge |
| CN104929057A (en) * | 2015-07-07 | 2015-09-23 | 合肥工业大学 | Wrapping and hanging device with arch bridge suspenders convenient to replace |
| CN105297631A (en) * | 2015-10-20 | 2016-02-03 | 柳州欧维姆工程有限公司 | Traction-type tool derrick rig for replacing derricks of steel tube truss-concrete arch bridge |
| CN105507167A (en) * | 2015-12-30 | 2016-04-20 | 杭州市市政工程集团有限公司 | Construction method for replacing suspender of tied-arch bridge by PLC (Programmable Logic Controller) synchronous tensioning |
| CN206680868U (en) * | 2017-01-24 | 2017-11-28 | 柳州欧维姆工程有限公司 | A kind of synchronous liquid electric control Suo Li converting systems for suspender replacement |
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2017
- 2017-01-24 CN CN201710060365.7A patent/CN106638328A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007126848A (en) * | 2005-11-02 | 2007-05-24 | Mitsubishi Heavy Industries Bridge & Steel Structures Engineering Co Ltd | Aseismatic repair method of existing bridge |
| CN102116012A (en) * | 2009-12-30 | 2011-07-06 | 上海天演建筑物移位工程有限公司 | Suspender replacement method for tie bar type overpass bridge |
| CN104929057A (en) * | 2015-07-07 | 2015-09-23 | 合肥工业大学 | Wrapping and hanging device with arch bridge suspenders convenient to replace |
| CN105297631A (en) * | 2015-10-20 | 2016-02-03 | 柳州欧维姆工程有限公司 | Traction-type tool derrick rig for replacing derricks of steel tube truss-concrete arch bridge |
| CN105507167A (en) * | 2015-12-30 | 2016-04-20 | 杭州市市政工程集团有限公司 | Construction method for replacing suspender of tied-arch bridge by PLC (Programmable Logic Controller) synchronous tensioning |
| CN206680868U (en) * | 2017-01-24 | 2017-11-28 | 柳州欧维姆工程有限公司 | A kind of synchronous liquid electric control Suo Li converting systems for suspender replacement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408637A (en) * | 2018-04-11 | 2018-08-17 | 中国人民解放军第五七零工厂 | Multi-station synchronous lift control system and operating method for aircraft lifting and landing |
| CN108408637B (en) * | 2018-04-11 | 2024-04-19 | 凌云(宜昌)航空装备工程有限公司 | Multi-station synchronous lifting control system for lifting of airplane and operation method |
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