CN202509413U - Follow-up supporting cushion block - Google Patents
Follow-up supporting cushion block Download PDFInfo
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- CN202509413U CN202509413U CN2012201368214U CN201220136821U CN202509413U CN 202509413 U CN202509413 U CN 202509413U CN 2012201368214 U CN2012201368214 U CN 2012201368214U CN 201220136821 U CN201220136821 U CN 201220136821U CN 202509413 U CN202509413 U CN 202509413U
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- lip block
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Abstract
The utility model relates to a bridge heightening technology, in particular to a follow-up supporting cushion block for building jacking construction. At least one cavity is formed in the follow-up supporting cushion block and is provided with a cavity opening formed on a lower supporting surface; a follow-up hydraulic oil cylinder and a balance oil cylinder coaxial with the follow-up hydraulic oil cylinder are fixedly mounted in the cavity; the jacking direction of the follow-up hydraulic oil cylinder is perpendicular to the supporting surface; the balance oil cylinder is fixed at the bottom of the cavity; a base of the follow-up hydraulic oil cylinder is fixedly mounted at the jacking end of the balance oil cylinder; the jacking end can extend out of or is completely contracted into the cavity through the opening; and a connection device for the fixed connection with an upper structure is arranged on an upper supporting surface of the follow-up supporting cushion block.
Description
Technical field
The utility model relates to bridge and adds high-tech, is specifically related to a kind of servo-actuated lip block that is used for the building jack-up construction.
Background technology
In at present present river course, railway, the highway rebuilding, the headroom of bridge and existing linear and the newly-built bridge of bridge be linear, and problem such as to be connected be the difficult point problem in the transformation.Domestic many cross a rivers road super expressway bridge because under-clearance is not enough, is faced with the problem of transformation at present.For the transformation of old bridge, traditional method is old bridge to be removed rebuild, and this is with the labor financial resource and material resource, and construction period is long bigger to social influence.The bridge jacking technology has economical rationality as a kind of novel bridge renovation technique, short construction period, and the advantage less to social environment influence has the conventional method incomparable advantage.In order to reduce as far as possible to social influence, shorten construction period, even do not suspend traffic, need carry out jack-up construction to bridge.
At present, job practices commonly used in the bridge jacking technology is the hydraulic jack jacking, and especially in large-tonnage bridge jacking engineering, hydraulic lifting is a unique selection.The hydraulic jack system can provide powerful top lift, and whole hydraulic jack system is connected by oil pipe, so when jacking, can play a role jointly.Especially synchronization of jacking up technology of hydraulic jack integral jacking system is mature on the whole at present, adopts PLC Hydraulic Synchronizing control jacking successfully utilization in multinomial order engineering.Hydraulic lifting system itself is also as the support system in the bridge jacking engineering in engineering in the past.But there is very big risk in the hydraulic lifting system as support system: if occur letting out in the hydraulic pressure, accident such as oil pipe explosion, the safety of bridge jacking is on the hazard, even immeasurable security incident takes place during jacking.
A kind of automatic following support system and method in Chinese patent 200910046134, have been disclosed; Used in this patent and a kind ofly utilized motor-driven following support device to come to support for superstructure; Measure the distance between following support device and the superstructure through micrometer and controller, control motor rotating drive following support device is followed jacking automatically.The purpose of this method and this system design be when the hydraulic jack decompression as the supplemental support instrument, but have following shortcoming in actual use:
One, the mode that adopts micrometer to measure following support device and superstructure spacing in this method (system) is controlled following support device and is carried out jacking, and this design concept is difficult the realization in practice of construction.Be different from the machining technique field, in technical field of building construction, generally can't accomplish higher precision, the planeness of the bottom of superstructure is relatively poor relatively, in this kind environment, adopts micrometer bigger error can occur.
Even two cast aside above-mentioned error component, above-mentioned following support system still has the problem that can't be overcome.Because micrometer can't measure small distance, cause following support device to fit tightly superstructure and have a gap all the time.Like cut off value mentioned in this patent working example is 1mm, promptly mean the following support device jacking put in place the back and superstructure between still have the gap about 1 mm.Except that the above-mentioned gap that can't be overcome; Through experiment confirm, underpin following support system when stressed when jack-up hydraulic ram is stressed, when being transformed on the following support system along with upper load; Big displacement compression also can appear in following support device; The displacement compression analysis of causes has 2 points: one of which, following support system inside are to adopt mechanical whorl to carry, and bear the load on top through the elastic deformation of mechanical whorl, when the superstructure load is changed; The mechanical whorl parts are compressed, and produce a change in displacement value; Two, owing to the variation of stressed position of the fulcrum, the compressive strain of the superstructure that causes self because following support device can't initiatively follow up, can not be eliminated the deflection of superstructure self.When conversion was stressed, the load of thousands of tons of was transferred to the following support device place by the jack-up hydraulic ram place, and corresponding superstructure produces compressive strain.Can be drawn by above-mentioned principle, when conversion was stressed, superstructure can occur one and significantly fall, and the displacement stroke of this whereabouts is the summation that gap described above adds the top offset compression.Certainly, above-mentioned phenomenon exists equally when the cushion block of routine supports superstructure, but because jack-up hydraulic ram is received in the cylinder process, and load is changed gradually, so the process that superstructure falls is in supported state all the time.And when the jack-up hydraulic ram decompression falls after rise, load moment conversion, this moment, superstructure will fall to be close to the mode that does not have to support, and was breakneck and drop in the construction like this.
Three, plug-in servomotor is bigger on the following support device, makes that the following support device planar dimension is bigger, is difficult for during use installing.
Can know that by above argumentation there are the defective that necessarily can't overcome in actual use in this automatic following support system and method, be applied to and still have bigger risk in the bridge jacking construction.
Summary of the invention
The purpose of the utility model is the weak point according to above-mentioned prior art; A kind of servo-actuated lip block is provided; Be different from conventional cushion block; This servo-actuated lip block is fixedly mounted on the superstructure bottom of treating jacking, is provided with the follow-up hydraulic oil cylinder in it, makes and when the oil pressure of oil cylinder suddenly disappears, still can effectively support top jacking bridge, avoid top bridge landing through follow-up hydraulic oil cylinder or servo-actuated lip block ability.
The utility model purpose realizes being accomplished by following technical scheme:
A kind of servo-actuated lip block; Relate to the counter-force basis, treat the building superstructure of jacking and be located at said superstructure and the counter-force basis between jack-up hydraulic ram; Said servo-actuated lip block has the upper and lower stayed surface that is parallel to each other; It is characterized in that: be provided with at least one cavity in the said servo-actuated lip block; Said cavity has the cavity hatch of being located on the said down stayed surface, is installed with the balancing cylinder of a follow-up hydraulic oil cylinder and and the coaxial setting of said follow-up hydraulic oil cylinder in the said cavity, and the jacking direction of said follow-up hydraulic oil cylinder is perpendicular to said stayed surface; Said balancing cylinder is fixed in the bottom of said cavity; The base of said follow-up hydraulic oil cylinder is fixedly installed on the jacking end of said balancing cylinder, and said follow-up hydraulic oil cylinder is vertical, and said jacking end can stretch out from said opening part/fully in the said cavity of retraction; The last stayed surface place of said servo-actuated lip block is provided with and is used for the linkage that is fixedly connected with said superstructure.
Spacing between said two stayed surfaces is identical with said jack-up hydraulic ram minimum constructive height.
Said linkage is to be convexly set in the outer flange of said servo-actuated lip block.
Have at least two cavitys that have under shed in the said servo-actuated lip block, separate through deep floor between two adjacent said cavitys, said deep floor lower surface constitutes said surface-supported part.
The advantage of the utility model is following:
1, the follow-up hydraulic oil cylinder of the utility model adopts machinery to carry, and has avoided accidents such as hydraulic leak or sealing leakage of oil, has good safety reliability with respect to the hydraulic fluid compressing cylinder.
2, the follow-up hydraulic oil cylinder of the utility model adopts hydraulic-driven, when common servo-actuated is pushed up in many servo-actuateds, has guaranteed that many servo-actuateds tops make the synchronism of time spent, verification experimental verification this point.Hydraulically powered servo-actuated top need not servomotor, thus less with respect to the Mechanical Driven scale of construction, be easy to install and use.
3, the contrast verification through testing for several times; This utility model has very high safety reliability; Have good synchronism, operability and holistic resistant behavior, can suddenly disappear or still can effectively support the top bridge during oil pipe explosion as a kind of oil pressure at oil cylinder rises bridge; Avoid the follow-up supporting mechanism of top bridge landing, thereby reliable assurance is provided for the bridge jacking engineering safety.
Description of drawings
Accompanying drawing 1 is a servo-actuated lip block overall structure sketch map among the embodiment 1;
Accompanying drawing 2 is a servo-actuated lip block overall structure sketch map among the embodiment 2;
Accompanying drawing 3 is a servo-actuated lip block vertical view among the embodiment 2.
The specific embodiment
Through embodiment the utility model characteristic and other correlated characteristic are done further explain below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Shown in Fig. 1-3, label 1-11 representes respectively: superstructure 1, counter-force basis 2, servo-actuated lip block 3, jack-up hydraulic ram 4, follow-up hydraulic oil cylinder 5, flange 6, balancing cylinder 7, deep floor 8, side plate 9, installation base plate 10, cavity 11.
Embodiment 1:
Referring to Fig. 1, in the present embodiment in the related bridge construction, superstructure is three to stride the variable cross-section prestressed concrete continuous box girder; Based on this structure; Present embodiment adopts direct lift-up method, promptly is counter-force basis 2 with the bridge pier, between counter-force basis 2 and superstructure 1 bottom, jack-up hydraulic ram 4 is installed; Through PLC computer Synchronization Control, the method for integral jacking case beam (part, case beam top need reinforce) realizes raising the purpose of main bridge bridge floor absolute altitude.
Referring to Fig. 2, the agent structure of servo-actuated lip block 3 is the height steel case identical with jack-up hydraulic ram 4 minimum constructive heights in the present embodiment.This steel case is rectangular-shaped structure, constitutes with the side plate 9 that is vertically welded in installation base plate 10 peripheries by base plate 10 is installed.Lower surface of servo-actuated lip block 9 (being the lower surface of side plate 9 in the present embodiment 1) and installation base plate 10 laterally arrange, and constitute the upper and lower stayed surface of servo-actuated lip block 9 respectively.In servo-actuated lip block 9, by being installed, base plate 10 encloses a cavity 11 with side plate 9, the balancing cylinder 7 of a follow-up hydraulic oil cylinder 5 and and said follow-up hydraulic oil cylinder 5 coaxial settings is installed in this cavity 11.Follow-up hydraulic oil cylinder 5 is set is when suddenly disappearing, superstructure 1 landing for fear of oil pressure at jack-up hydraulic ram 4.Follow-up hydraulic oil cylinder 5 is ordered about by the hydraulic-driven pumping plant and carries out work; Its inner mechanical whorl that adopts carries; Bear the load on top through the elastic deformation of mechanical whorl; Follow-up hydraulic oil cylinder 5 is passive stressed, promptly can bear bigger load, but and the active force that provides much smaller than bearing load.In the present embodiment, but follow-up hydraulic oil cylinder 5 bearing loads are 4000KN, and its active top lift only has 1.5KN approximately.The inner seal of follow-up hydraulic oil cylinder 5 is installed into flowline, and oil pipe is connected to hydraulic power unit or is called on the control pumping plant.During jacking, open this pumping plant, the oil in the pumping plant gets in the follow-up hydraulic oil cylinder 5 through oil pipe, and through the screw device of oil pressure actuated follow-up hydraulic oil cylinder 5 inside, follow-up hydraulic oil cylinder 5 follows up automatically; When receiving cylinder, oil return, the oil in the follow-up hydraulic oil cylinder 5 gets into pumping plant.The inside rotary power of follow-up hydraulic oil cylinder 5 is provided by hydraulic power unit, through regulating rising and the decline that direction of rotation gets final product implement device.
The balancing cylinder 6 of stroke very little (about 2mm) is put in every follow-up hydraulic oil cylinder 5 below, and balancing cylinder 6 specifications are identical, have oil pipe to be communicated with between each balancing cylinder 6, and said balancing cylinder 6 pressure equate during work.Through increasing balancing cylinder 6 devices, the offset deviation that can correct rigidity between the servo-actuated support automatically makes the stress equalization of each strong point.Jacking load in top passes to balancing cylinder 6 through follow-up hydraulic oil cylinder 5, and balancing cylinder 6 on the same group guarantees that through oil pipe UNICOM follow-up hydraulic oil cylinder 5 on the same group is stressed even; Said balancing cylinder 6 strokes are very little, have oil pipe to be communicated with between each balancing cylinder 6.
Said balancing cylinder 7 is fixed on the installation base plate 10 of bottom of said cavity 11, and the base of follow-up hydraulic oil cylinder 5 is fixedly installed on the jacking end of said balancing cylinder 6, and the jacking direction of follow-up hydraulic oil cylinder 5 is perpendicular to stayed surface up and down.The jacking end of said follow-up hydraulic oil cylinder 5 can stretch out from said opening part/fully in the said cavity 11 of retraction; The last stayed surface place of said servo-actuated lip block is provided with and is used for the flange 6 that is fixedly connected with said superstructure.
When construction, servo-actuated lip block 3 next-door neighbour's jack-up hydraulic rams 4 are provided with, and its base is fixed on the bottom of superstructure 1.
When the jacking operation, jack-up hydraulic ram jacking superstructure 1, follow-up hydraulic oil cylinder 5 follows up automatically;
After the reservation stroke was arrived in jack-up hydraulic ram 4 jackings, jack-up hydraulic ram 4 stopped jacking, and very heavy 5 tops of servo-actuated stop follow-up;
Follow-up hydraulic oil cylinder 5 is received cylinder afterwards, and pad is put cushion block below servo-actuated lip block 3 afterwards;
Jack-up hydraulic ram is received cylinder afterwards, and servo-actuated lip block 3 compresses cushion block and stressed, and the whole loads of bridge are transformed on servo-actuated lip block 3 and the cushion block by jack-up hydraulic ram;
Afterwards at jack-up hydraulic ram held cushion block;
After the jack-up hydraulic ram lower cushion block places, repeat above-mentioned steps, arrive a little more than design elevation until jacking.
Embodiment 2:
Referring to Fig. 2-3; Be provided with some deep floors 8 in the present embodiment 2 in the servo-actuated lip block 9; These deep floor 8 vertical weldings are connected to be installed on the base plate 10, and its both sides end face and the welding of side plate 9 inner surfaces are perhaps welded each other, and servo-actuated lip block 9 is divided into some cavitys 11.In each cavity 11, suit also is fixed with a follow-up hydraulic oil cylinder 5 and a balancing cylinder 7.The lower surface of deep floor 8 is concordant with the lower surface of side plate 9, and constitutes the following stayed surface of servo-actuated lip block 9.
Owing to need support for superstructure, follow-up hydraulic oil cylinder 5 uses usually in groups.One group of follow-up hydraulic oil cylinder 5 is set in servo-actuated lip block 9 in the present embodiment 2, can effectively saves installing space; And deep floor 8 is set 5 of follow-up hydraulic oil cylinders, not only improve the intensity of servo-actuated lip block 9, and increased surface-supported area, dispersive stress.
Claims (4)
1. servo-actuated lip block; Relate to the counter-force basis, treat the building superstructure of jacking and be located at said superstructure and the counter-force basis between jack-up hydraulic ram; Said servo-actuated lip block has the upper and lower stayed surface that is parallel to each other; It is characterized in that: be provided with at least one cavity in the said servo-actuated lip block; Said cavity has the cavity hatch of being located on the said stayed surface down; Be installed with the balancing cylinder of a follow-up hydraulic oil cylinder and and the coaxial setting of said follow-up hydraulic oil cylinder in the said cavity, the jacking direction of said follow-up hydraulic oil cylinder is perpendicular to said upper and lower stayed surface, and said balancing cylinder is fixed in the bottom of said cavity; The base of said follow-up hydraulic oil cylinder is fixedly installed on the jacking end of said balancing cylinder, and said jacking end can stretch out from said opening part/fully in the said cavity of retraction; The last stayed surface place of said servo-actuated lip block is provided with and is used for the linkage that is fixedly connected with said superstructure.
2. a kind of servo-actuated lip block according to claim 1 is characterized in that: the spacing between said two stayed surfaces is identical with said jack-up hydraulic ram minimum constructive height.
3. a kind of servo-actuated lip block according to claim 1 is characterized in that: said linkage is to be convexly set in the outer flange of said servo-actuated lip block.
4. a kind of servo-actuated lip block according to claim 1; It is characterized in that: have at least two cavitys that have under shed in the said servo-actuated lip block; Separate through deep floor between two adjacent said cavitys, said deep floor lower surface constitutes said surface-supported part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201368214U CN202509413U (en) | 2012-04-01 | 2012-04-01 | Follow-up supporting cushion block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201368214U CN202509413U (en) | 2012-04-01 | 2012-04-01 | Follow-up supporting cushion block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202509413U true CN202509413U (en) | 2012-10-31 |
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ID=47061910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201368214U Expired - Lifetime CN202509413U (en) | 2012-04-01 | 2012-04-01 | Follow-up supporting cushion block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202509413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297443A (en) * | 2018-09-26 | 2019-02-01 | 南京泰普森自动化设备有限公司 | Jack support device, workpiece calibration device of rotation driving and measuring device |
-
2012
- 2012-04-01 CN CN2012201368214U patent/CN202509413U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297443A (en) * | 2018-09-26 | 2019-02-01 | 南京泰普森自动化设备有限公司 | Jack support device, workpiece calibration device of rotation driving and measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |