CN201447670U - Multi-jack synchronous linkage jacking device for bridges - Google Patents
Multi-jack synchronous linkage jacking device for bridges Download PDFInfo
- Publication number
- CN201447670U CN201447670U CN2009200568584U CN200920056858U CN201447670U CN 201447670 U CN201447670 U CN 201447670U CN 2009200568584 U CN2009200568584 U CN 2009200568584U CN 200920056858 U CN200920056858 U CN 200920056858U CN 201447670 U CN201447670 U CN 201447670U
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- jack
- high pressure
- oil pump
- jacking
- flow divider
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Abstract
The utility model discloses a multi-jack synchronous linkage jacking device for bridges. The jacking device comprises an oil pump, a high pressure diverter valve, a high pressure oil pipe and jacks. The oil pump is connected with the high pressure diverter valve by the high pressure oil pipe. At least two jacks are connected with the high pressure diverter valve in parallel, and the oil pump uniformly provides oil for the jacks. The jacks are self-locked jacks. The multi-jack synchronous linkage jacking device for bridges has the advantages of simple structure, simple operation technique and little popularization and application difficulty.
Description
Technical field
The utility model relates to the bridge construction equipment technical field.
Background technology
It is current job practices commonly used that bridge pad is changed, and it adopts ordinary jack that beam slab jack-up is come, and removes the damage bearing, settles new bearing again.Recently some engineerings have adopted more advanced synchronization of jacking up constructure scheme, utilize computer control that bridge is carried out integral body (particularly direction across bridge) jacking synchronously, accelerated construction speed, particularly farthest reduced the additional internal force that beam slab is produced because of unique relatively, guarantee the quality of beam body, but must break off a friendship during construction; If continuous beam must disconnect continuous part during jacking, could construct.And current each high-speed transit amount is all very big, and bring very big pressure will for owner, road administration and traffic police a couple of days that suspends traffic.If engineering continues for some time, the economic loss and the social influence that bring are inestimable.
Therefore, demand a kind of bridge jacking device of not breaking off a friendship urgently, to overcome above-mentioned defective.
The utility model content
At above-mentioned the deficiencies in the prior art, the purpose of this utility model provides a kind of bridge jacking device, and described bridge jacking apparatus structure is uncomplicated, and operating procedure is simple, and it is little to apply difficulty.
To achieve these goals, the utility model provides a kind of many tops synchronous interaction bridge jacking device, comprise oil pump, high pressure flow divider, high-pressure oil pipe and jack, described oil pump links to each other with described high pressure flow divider by high-pressure oil pipe, and described high pressure flow divider links to each other with described jack by described high-pressure oil pipe; Described jack is more than two, and described jack is unified fuel feeding by the parallel connection of described high pressure flow divider by described oil pump, and described jack is the self-locking jack.
Preferably, described high pressure flow divider equates to the tubing length of each jack.
The beneficial effects of the utility model are: the device construction that the utility model provides is simple, and operation is relatively easily convenient, can operate through certain training, and it is little to apply difficulty; And, use the utility model device and change bearing, the vehicle that can avoid close traffic to bring blocks up, alleviate vehicle and dredge, shunt the pressure that brings, simultaneously, short construction period can be the Construction Party and saves great amount of investment, bring very big economic benefit and social benefit, thereby well solved ubiquitous problem in the present construction technology.
Description of drawings
Fig. 1 is that many tops synchronous interaction bridge jacking device constitutes schematic diagram.
Fig. 2 is the elevation that jack is arranged at pier location.
Fig. 3 is the plan view that jack is arranged at pier location.
The specific embodiment
Below in conjunction with the accompanying drawing of the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.
With reference to figure 1, many tops synchronous interaction bridge jacking device of the present utility model, comprise oil pump 1, high pressure flow divider 2, high- pressure oil pipe 3,5 and 5 ' and jack 4,4 ', described oil pump 1 links to each other with described high pressure flow divider 2 by high-pressure oil pipe 3, described jack 4 links to each other with 5 ' one end with high-pressure oil pipe 5 respectively with 4 ', and described high-pressure oil pipe 5 is connected with described high pressure flow divider 2 respectively with 5 ' the other end; Described jack is more than two, and described jack 4 and 4 ' is realized in parallel by high pressure flow divider 2, unify fuel feeding by described oil pump.Particularly, described high-pressure oil pipe 5 and 5 ' equal in length.
This jack 4 and 4 ' is the self-locking jack, and described jack 4 comprises self-locking nut 43, piston 42 and oil cylinder 41, and described piston 42 can be installed with up or down in oil cylinder 41; Described jack 4 ' comprises self-locking nut 43 ', piston 42 ' and oil cylinder 41 ', and described piston 42 ' can be installed with in oil cylinder 41 ' up or down.Adopt the mechanical self-latching type jack, the classification jacking, self-locking synchronously, stressed after the self-locking by the self-locking device instead of piston, thoroughly avoided the asynchronous damage that causes lateral ties of beam body.In the jacking process, constantly screw self-locking nut, when above situation occurs, the power that acts on the piston is transferred on the jack cylinder body by self-locking nut, thereby can not damage beam slab or cause the damage of lateral ties.
Embodiment 1: the application of many tops synchronous interaction bridge jacking device
Present embodiment is connected in parallel on the jack of same model on the isobaric flow divider, by same oil pump feed, has realized that each jack top lift is identical.Self-locking nut rotates with piston stroke when jacking or the beam that falls (plate), guaranteed under various rough sledding jack synchronously, self-locking jack-up system safety, reliable synchronously.Concrete example is as follows:
1, lectotype selection
1) top lifting height of jack requires: the overall height according to bridge pinner and bearing is about 25 centimetres, the height of single jack is 18 centimetres, and the stroke of jack is 5 centimetres, and the jacking overall height of jack is 23 centimetres, at jack each pading plate up and down, can satisfy construction requirement again.
2) the jacking Capability Requirement of jack: the beam slab weight of pressing bridge is calculated, and gets the safety guarantee of 4 times of jack top power, and selecting single jacking ability for use is the 1000KN jack.
3) quantitative requirement of jack: arranging that by the width of cloth about every beam (plate) principle of a jack selects the number of jack, is 14 20 meters long hollow beam slab according to the wideest bridge of required processing, and getting 28 jack can meet the demands.
4) supporting facility: as oil pump, high pressure flow divider, high-pressure oil pipe etc.
2, construction technology:
1) jacking is prepared
Between beam body bottom and bent cap, enough headroom cracks are arranged, can hold jack, can set up support 13; As some local bearing pad stone insufficient height of bridge, cause bent cap 17 and beam body 10 bottom spacing headroom minimum, can't put ordinary jack, will under bridge, set up support 13, or set up bracing frame by pier 14, place jack 15 thereon.Shrinkage joint, bridge floor be residual a large amount of building wastes on bent cap in construction or when maintenance continuously, remove the building waste on the bent cap.On bent cap, reserve the jack position, irregular bent cap end face is carried out preliminary chipping, again with the levelling of polishing of angle grinding machine, until checking that with spirit level planeness is qualified.
2) connection of jack
The lift-up device of top synchronous interaction more than of selecting for use 28 slim jack of a cover to form, be connected with oil pump with oil pipe one end earlier, the other end is connected with the high pressure flow divider, and 28 oil-outs of flow divider are connected with each jack 15 by 28 isometric high-pressure oil pipes.During connection, each interface of scrutiny can not have oil leakage phenomenon, finds to have leakage of oil, connect again.
3) jack is installed
For jack 15 center and the bridge superstructure center of making a concerted effort of making a concerted effort is overlapped, superstructure is stressed again little, should as close as possible bearing 12 installations when placing jack, but to avoid that 12 replacings impact to bearing.Vertically upward stressed when making jacking, jack 15 bottom surfaces must level.
On abutment/bridge pier 14, place earlier a thickness from the position of beam-ends 30cm and be 20 centimetres steel plate 11 in bottom, beam slab termination, on steel plate 11, put jack 15, place a same steel plate 11 on the jack 15 again, if jack 15 and hollowcore slab contact surface 10 also has the space, just add steel plate 11 again and level up and pad; Two width of cloth are all installed jack about abutment/material successively, check one by one whether jack is in place, and starts oil pump, carry out synchronous classification jacking.
4) synchronization of jacking up
The beginning jacking makes jack 15 contact with soffit 10, fastens oil pump, again jack is checked one by one, to not positive adjusting is installed, start oil pump again, so that the steel plate 11 on the jack contacts fully with soffit 10, stop and measure the height of jack, continue jacking again, beam slab 10 and bearing 12 are disengaged, the height of jacking this moment can not be above 6 millimeters, the oil pump that stops, the adjustment of beginning bearing with change operation.
Many tops of the utility model synchronous interaction bridge jacking device creatively combines synchronization of jacking up with the self-locking jack, a kind of isolated plant of not close traffic jacking bridge is provided.The device construction that this utility model provides is simple, and operation is relatively easily convenient, can operate through certain training, and it is little to apply difficulty; And, to use the utility model device and change bearing, the vehicle that can avoid close traffic to bring blocks up, and alleviate vehicle and dredge, shunt the pressure that brings, and short construction period, bring good society and economic benefit.
Above disclosed only is preferred embodiment of the present utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (2)
1. the bridge jacking of top synchronous interaction more than kind device, comprise oil pump, high pressure flow divider, high-pressure oil pipe and jack, described oil pump links to each other with described high pressure flow divider by high-pressure oil pipe, it is characterized in that: described jack is more than two, described jack is by the parallel connection of described high pressure flow divider, unify fuel feeding by described oil pump, described jack is the self-locking jack.
2. many tops synchronous interaction bridge jacking device according to claim 1 is characterized in that: described high pressure flow divider equates to the tubing length of each jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200568584U CN201447670U (en) | 2009-05-19 | 2009-05-19 | Multi-jack synchronous linkage jacking device for bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200568584U CN201447670U (en) | 2009-05-19 | 2009-05-19 | Multi-jack synchronous linkage jacking device for bridges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201447670U true CN201447670U (en) | 2010-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200568584U Expired - Lifetime CN201447670U (en) | 2009-05-19 | 2009-05-19 | Multi-jack synchronous linkage jacking device for bridges |
Country Status (1)
| Country | Link |
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| CN (1) | CN201447670U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892636A (en) * | 2010-08-12 | 2010-11-24 | 上海先为土木工程有限公司 | Integral lifting reconstruction method for high-span overweight continuous box girder |
| CN102180426A (en) * | 2011-04-28 | 2011-09-14 | 上海城建（集团）公司 | Follow-up supporting device and method |
| CN102505642A (en) * | 2011-10-29 | 2012-06-20 | 中铁一局集团有限公司 | Control system for integrated synchronous jacking of cut pier and control method |
| CN106320193A (en) * | 2016-11-09 | 2017-01-11 | 郑州航空工业管理学院 | Method for leveling bridge support during replacement and new installation |
| CN106567339A (en) * | 2016-11-09 | 2017-04-19 | 中交路桥华东工程有限公司 | Pi-shaped superposed beam reverse jacking system |
| CN108004938A (en) * | 2017-12-29 | 2018-05-08 | 上海市机械施工集团有限公司 | Control structure and method for the hydraulic jack of U beams installation |
| CN109826107A (en) * | 2019-03-25 | 2019-05-31 | 中国十九冶集团有限公司 | Component support system and its application method |
| CN110181650A (en) * | 2019-06-03 | 2019-08-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of prefabricated case beam template synchronous jacking system and its control method |
| CN111908362A (en) * | 2020-08-31 | 2020-11-10 | 广西桂冠电力股份有限公司大化水力发电总厂 | Main transformer jacking method and device |
-
2009
- 2009-05-19 CN CN2009200568584U patent/CN201447670U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892636A (en) * | 2010-08-12 | 2010-11-24 | 上海先为土木工程有限公司 | Integral lifting reconstruction method for high-span overweight continuous box girder |
| CN102180426A (en) * | 2011-04-28 | 2011-09-14 | 上海城建（集团）公司 | Follow-up supporting device and method |
| CN102180426B (en) * | 2011-04-28 | 2015-04-22 | 上海城建（集团）公司 | Follow-up supporting device and method |
| CN102505642A (en) * | 2011-10-29 | 2012-06-20 | 中铁一局集团有限公司 | Control system for integrated synchronous jacking of cut pier and control method |
| CN102505642B (en) * | 2011-10-29 | 2013-11-13 | 中铁一局集团有限公司 | Control system for integrated synchronous jacking of cut pier and control method |
| CN106320193A (en) * | 2016-11-09 | 2017-01-11 | 郑州航空工业管理学院 | Method for leveling bridge support during replacement and new installation |
| CN106567339A (en) * | 2016-11-09 | 2017-04-19 | 中交路桥华东工程有限公司 | Pi-shaped superposed beam reverse jacking system |
| CN108004938A (en) * | 2017-12-29 | 2018-05-08 | 上海市机械施工集团有限公司 | Control structure and method for the hydraulic jack of U beams installation |
| CN109826107A (en) * | 2019-03-25 | 2019-05-31 | 中国十九冶集团有限公司 | Component support system and its application method |
| CN109826107B (en) * | 2019-03-25 | 2020-06-16 | 中国十九冶集团有限公司 | Component support system and method of use |
| CN110181650A (en) * | 2019-06-03 | 2019-08-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of prefabricated case beam template synchronous jacking system and its control method |
| CN111908362A (en) * | 2020-08-31 | 2020-11-10 | 广西桂冠电力股份有限公司大化水力发电总厂 | Main transformer jacking method and device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100505 |
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| CX01 | Expiry of patent term |