CN203977302U - A kind of bridge jacking system - Google Patents
A kind of bridge jacking system Download PDFInfo
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- CN203977302U CN203977302U CN201420057263.1U CN201420057263U CN203977302U CN 203977302 U CN203977302 U CN 203977302U CN 201420057263 U CN201420057263 U CN 201420057263U CN 203977302 U CN203977302 U CN 203977302U
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- jacking
- jack
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- bridge
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Abstract
The utility model discloses a kind of bridge jacking system, by bridge bottom, many twin-stage single-acting jack being set, and drive jack to carry out synchronous micro-jacking and landing by fuel-flow control hydraulic power unit.Owing to adopting twin-stage single-acting jack, can first carry out the pre-jacking of one-level, to eliminate space and elastic deformation, and then carry out the formal jacking of secondary, can avoid piston to depart from the defects such as cylinder body, and realize the Synchronization Control of jacking and landing by the volume that accurate measurement hydraulic oil passes in and out each jack, play the controlled effect that declines of controlled, the very heavy heading tape lotus of jacking Multipoint synchronous, thereby effectively ensure the structural safety in bridge jacking process.
Description
Technical field
The utility model relates to bridge jacking and the beam technology that falls, and more particularly, relates to a kind of bridge jacking system.
Background technology
In bridge jacking engineering in the past, the mode that jack-up system generally adopts PLC synchronous control system and double-action jack to combine, controls synchronization of jacking up and the landing of many group jack by many displacement transducers of this system.And be in the bridge jacking and bearing replacement engineering of freely-supported plate-girder, T-shaped beam or little case beam at upper structure type, (current double-action jack is due to technical limitations often because the space between beam body and substructure is too little, large stroke double-acting jack cannot to be directly installed, it is highly that cannot to reach 4cm following), the PLC synchronous control system that slim (being highly less than 4cm) single-acting jack can only be installed and be equipped with displacement control is implemented micro-jacking.But this micro-raising method has following three defects: the control point of displacement limited amount of the one, PLC synchronous control system, and in above-mentioned bridge jacking and bearing replacement engineering, the required jack number of single jacking is more, comprise many jack enforcement synchronizations of jacking up so a general control point of displacement can be controlled one group, thereby cause the displacement synchronous between interior each the jack of same group of jack uncontrollable.The 2nd, due to slim single-acting jack stroke very little (1～2cm), in jacking process, indivedual jack are prone to piston and depart from cylinder body, cause the consequence of jacking failure after leakage of oil.The 3rd, limited by jack body height, slim jack is single-acting jack, can control synchronization of jacking up by PLC, but because hydraulic power unit is in the past with oil pressure, displacement control, the uncontrollable single-acting jack of its technical limitations synchronously falls, so generally can only lean on the lower drop of pressure of beam body deadweight while falling beam.Due to above three defects, in jacking and while falling beam operation, can cause damage to the association structure between the beam body of bridge and beam body.
Utility model content
For the above-mentioned shortcoming existing in prior art, the purpose of this utility model is to provide a kind of bridge jacking system, can realize synchronization of jacking up and landing, eliminate the phenomenon that slim jack piston departs from cylinder body, effectively ensure jacking and the structural safety of the beam operation that falls.
For achieving the above object, the utility model adopts following technical scheme:
A kind of bridge jacking system, comprise twin-stage single-acting jack and fuel-flow control hydraulic power unit, many identical twin-stage single-acting jack are located at respectively between the beam body and its underpart structure for the treatment of jacking bridge, and every twin-stage single-acting jack includes cylinder body, is located at the oil-in of cylinder body one side and is located at the inside and outside two-stage piston in cylinder body; Fuel-flow control hydraulic power unit is connected with the oil-in of twin-stage single-acting jack respectively by fuel feed pump, fuel-flow control hydraulic power unit also has PLC, and record the motor revolution of hydraulic pump by PLC, export the hydraulic oil of respective volume amount according to revolution, carry out synchronization of jacking up and landing with what control every twin-stage single-acting jack.
Described every four twin-stage single-acting jack are one group, and by the connected fuel feeding of a fuel-flow control hydraulic power unit.
Between many described fuel-flow control hydraulic power units by the linkage controller Synchronization Control that links is set.
The height of cylinder of described twin-stage single-acting jack is less than 4cm.
In technique scheme, bridge jacking system of the present utility model is by many twin-stage single-acting jack are set in bridge bottom, and drives jack to carry out synchronous micro-jacking and landing by fuel-flow control hydraulic power unit.Owing to adopting twin-stage single-acting jack, can first carry out the pre-jacking of one-level, to eliminate space and elastic deformation, and then carry out the formal jacking of secondary, can avoid piston to depart from the defects such as cylinder body, and realize the Synchronization Control of jacking and landing by the volume that accurate measurement hydraulic oil passes in and out each jack, play jacking Multipoint synchronous controlled, prevent that jack piston from departing from the controlled effect that declines of the controlled and very heavy heading tape lotus of cylinder body, thereby effectively ensure the structural safety in bridge jacking process.
Brief description of the drawings
Fig. 1 is the top view of twin-stage single-acting jack of the present utility model;
Fig. 2 is the one-level jacking view of twin-stage single-acting jack of the present utility model;
Fig. 3 is the secondary jacking view of twin-stage single-acting jack of the present utility model;
Fig. 4 is the jack scheme of installation of bridge jacking method of the present utility model;
Fig. 5 is the jack one-level jacking view of bridge jacking method of the present utility model;
Fig. 6 is the jack secondary jacking view of bridge jacking method of the present utility model.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with drawings and Examples.
Refer to shown in Fig. 1～Fig. 6, bridge jacking system of the present utility model comprises twin-stage single-acting jack 10 and fuel-flow control hydraulic power unit 20, many identical twin-stage single-acting jack 10 are located at respectively between the beam body 1 and its underpart structure 2 for the treatment of jacking bridge, every twin-stage single-acting jack 10 includes cylinder body 11, be located at the oil-in 12 of cylinder body 11 1 sides and be located at the inside and outside two-stage piston 13 in cylinder body 11, 14, be freely-supported plate-girder in order to be applicable to upper structure type, in the bridge jacking of T-shaped beam or little case beam and bearing replacement engineering, the height of this jack cylinder body 11 can be designed to be less than 4cm, owing to adopting two-stage piston 13, 14, the large 10mm of the existing slim single-acting jack of its stroke ratio left and right.Fuel-flow control hydraulic power unit 20 is connected with the oil-in 12 of twin-stage single-acting jack 10 respectively by fuel feed pump, fuel-flow control hydraulic power unit 20 also has not demonstration in PLC(figure), and record the motor revolution of hydraulic pump by PLC, export the hydraulic oil of respective volume amount according to revolution, carry out synchronization of jacking up and landing with what control every twin-stage single-acting jack 10.
As an embodiment, described every four twin-stage single-acting jack 10 are one group, and by the connected fuel feeding of a fuel-flow control hydraulic power unit 20.And between many described fuel-flow control hydraulic power units 20 by linkage controller 21 Synchronization Control that links is set.Shown in Fig. 4 totally two groups of jack and two fuel-flow control hydraulic power units 20.
The method that adopts bridge jacking system of the present utility model to carry out bridge jacking specifically comprises the following steps:
A. treating, between beam body 1 downside of jacking bridge and its underpart structure 2, many twin-stage single-acting jack 10 are installed, and in jack upper and lower end several steel plate (not shown) of cushioning padding respectively;
B. the oil-in of jack 12 is connected to respectively to corresponding fuel-flow control hydraulic power unit 20 by fuel feed pump, between many fuel-flow control hydraulic power units 20 by linkage controller 21 Synchronization Control that links is set;
C. the inner carrier of controlling all jack by fuel-flow control hydraulic power unit 20 ejects with outer piston simultaneously, carries out one-level and synchronously tries jacking, in order to eliminate the upper and lower space of jack and to add the elastic deformation of pading plate;
D. the inner carrier of controlling all jack by fuel-flow control hydraulic power unit 20 continues separately to eject, and carries out secondary synchronization of jacking up, and puts in place;
E. put in place after construction operation, carry out successively reverse I and II and synchronously land by controlled all jack by fuel-flow control hydraulic power unit 20, in order to realize the beam that synchronously falls.
In step C, D, E, the hydraulic pump motor of described fuel-flow control hydraulic power unit 20 often turns around, the hydraulic oil of hydraulic pump output fixed amount, and fuel-flow control hydraulic power unit 20 has PLC, in order to record the revolution of oil pressure pump motor, and calculate the hydraulic fluid flow rate volume of turnover jack, accurately control the stroke of jacking and the landing of many jack with this, to realize synchronization of jacking up or the landing of many jack.
In sum, because the utility model has adopted twin-stage single-acting jack 10, can first carry out the pre-jacking of one-level, to eliminate space and elastic deformation, and then carry out the formal jacking of secondary, can avoid piston in prior art easily to depart from the defects such as cylinder body 11, and realize the Synchronization Control of jacking and landing by the volume of every jack of accurate measurement hydraulic oil turnover, play the controlled effect that declines of controlled, the very heavy heading tape lotus of jacking Multipoint synchronous, thereby effectively ensure the structural safety in bridge jacking process.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the utility model is described, and be not used as restriction of the present utility model, as long as within the scope of connotation of the present utility model, variation, modification to the above embodiment all will drop within the scope of claims of the present utility model.
Claims (4)
1. a bridge jacking system, is characterized in that:
Comprise twin-stage single-acting jack and fuel-flow control hydraulic power unit, many identical twin-stage single-acting jack are located at respectively between the beam body and its underpart structure for the treatment of jacking bridge, and every twin-stage single-acting jack includes cylinder body, is located at the oil-in of cylinder body one side and is located at the inside and outside two-stage piston in cylinder body; Fuel-flow control hydraulic power unit is connected with the oil-in of twin-stage single-acting jack respectively by fuel feed pump, fuel-flow control hydraulic power unit also has PLC, and record the motor revolution of hydraulic pump by PLC, export the hydraulic oil of respective volume amount according to revolution, carry out synchronization of jacking up and landing with what control every twin-stage single-acting jack.
2. bridge jacking system as claimed in claim 1, is characterized in that:
Described every four twin-stage single-acting jack are one group, and by the connected fuel feeding of a fuel-flow control hydraulic power unit.
3. bridge jacking system as claimed in claim 2, is characterized in that:
Between many described fuel-flow control hydraulic power units by the linkage controller Synchronization Control that links is set.
4. bridge jacking system as claimed in claim 1, is characterized in that:
The height of cylinder of described twin-stage single-acting jack is less than 4cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420057263.1U CN203977302U (en) | 2014-01-29 | 2014-01-29 | A kind of bridge jacking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420057263.1U CN203977302U (en) | 2014-01-29 | 2014-01-29 | A kind of bridge jacking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203977302U true CN203977302U (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420057263.1U Expired - Fee Related CN203977302U (en) | 2014-01-29 | 2014-01-29 | A kind of bridge jacking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203977302U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758049A (en) * | 2014-01-29 | 2014-04-30 | 上海天演建筑物移位工程有限公司 | Bridge jacking system and jacking method thereof |
| CN104878702A (en) * | 2015-03-30 | 2015-09-02 | 上海市城市建设设计研究总院 | Hydraulic power unit system capable of automatically controlling and distributing oil quantity and jacking and falling method of hydraulic power unit system |
| CN105066971A (en) * | 2015-08-20 | 2015-11-18 | 中铁六局集团天津铁路建设有限公司 | Strip-shaped frame bridge jacking measurement method |
-
2014
- 2014-01-29 CN CN201420057263.1U patent/CN203977302U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758049A (en) * | 2014-01-29 | 2014-04-30 | 上海天演建筑物移位工程有限公司 | Bridge jacking system and jacking method thereof |
| CN103758049B (en) * | 2014-01-29 | 2015-12-30 | 上海天演建筑物移位工程有限公司 | A kind of bridge jacking method |
| CN104878702A (en) * | 2015-03-30 | 2015-09-02 | 上海市城市建设设计研究总院 | Hydraulic power unit system capable of automatically controlling and distributing oil quantity and jacking and falling method of hydraulic power unit system |
| CN105066971A (en) * | 2015-08-20 | 2015-11-18 | 中铁六局集团天津铁路建设有限公司 | Strip-shaped frame bridge jacking measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lan Wuji Inventor after: Peng Yongping Inventor after: Lin Qichuo Inventor before: Lan Wuji Inventor before: Peng Yongping Inventor before: Lin Qichuo |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jinshan District Zhangyan town 201514 Shanghai City Matsugane Road No. 2072 room 8908 Patentee after: SHANGHAI EVOLUTION SHIFT BUILDING ENGINEERING CO., LTD. Address before: Jinshan District Zhangyan town 201514 Shanghai City Matsugane Road No. 2072 room 8908 Patentee before: Shanghai Evolution Building Shift Engineering Co., Ltd. |
|
| 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: 20141203 Termination date: 20190129 |