CN206545176U - Bridge pad synchronous jacking device - Google Patents
Bridge pad synchronous jacking device Download PDFInfo
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- CN206545176U CN206545176U CN201720211889.7U CN201720211889U CN206545176U CN 206545176 U CN206545176 U CN 206545176U CN 201720211889 U CN201720211889 U CN 201720211889U CN 206545176 U CN206545176 U CN 206545176U
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- jack
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- fuel feed
- cylinder
- bridge
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Abstract
The utility model discloses a kind of bridge pad synchronous jacking device, including no less than 1 pair jack, servo valve is provided with oil circuit pipeline, each pair jack is symmetrically disposed at bearing both sides, jack bottom is provided with leveling backing plate, jack is separated into rodless cavity and rod chamber, rodless cavity is communicated with oil inlet pipe, vertical fuel feed hole is evenly equipped with flat cylinder block, vertical fuel feed hole two ends are connected with rod chamber and rodless cavity, piston rod is set to 2~10mm with flat oil cylinder inner wall gap, piston rod end is fixed with displacement detecting piece, displacement detecting instrument is provided with the outside of flat oil cylinder；The utility model is by the way that multigroup jack is symmetrically disposed between bridge pier and floorings two-by-two, jacking is synchronized using same cross section, top lifting height control is controlled within 5mm by displacement detecting instrument and jack, jack is avoided to fluctuate, avoid bridge from declining too fast, improve the security of bridge construction.
Description
Technical field
The utility model belongs to the technical field of the method or equipment that are exclusively used in setting up or assemble bridge, is specifically related to one
Plant bridge pad synchronous jacking device.
Background technology
Currently for the jack-up construction method of bridge, the outside of abutment or pier column cap structure is used in mostly, with
Bolt anchoring Support bracket mode, sets up the job platform for setting jack, however, the working security of such a construction,
Depending on the bolt and concrete strength at grappling, and bolt and concrete strength are by material category, with when local environment shadow
Ring influence very huge, moreover as used construction bracket to be supported for point, in jacking such as because difference conjugates bridge superstructure weight, meeting
Side is concentrated on because tilting transfer, the stress increase of construction bracket is caused, triggers very heavy top support failure, will probably be caused chain anti-
Should, cause crossstructure to be damaged.
Existing bridge jacking is also known as hydraulic jack with hydraulic jack, is that one kind is made using plunger case or hydraulic cylinder
For the jack of rigid top lift part, it carries out lifting jacking by way of piston rod or piston base oil-feed, draining,
After the completion of PLC control synchronizations of jacking up, when bridge is put down, bridge is fallen by the way of draining, because jacking is apart from short,
Seem to be in controllable state in dropping process, for long range bridge, Jacking point is relatively more, when bridge is put down, will
Deflection can be caused due to asynchronous, bedding and padding squeeze de-, or even turn over the accident generation of bridge.
The content of the invention
In view of this, the purpose of this utility model is to provide a kind of bridge pad synchronous jacking device, a kind of bridge
Bearing synchronous jacking device is by the way that multigroup jack is symmetrically disposed between bridge pier and floorings two-by-two, using same horizontal stroke
Section synchronizes jacking, controls top lifting height control within 5mm by displacement detecting instrument and jack, it is to avoid very heavy
Top fluctuation, it is to avoid bridge declines too fast, the security of raising bridge construction.
In order to achieve the above object, a kind of bridge pad synchronous jacking device of the utility model, including multigroup hydraulic power unit,
The hydraulic power unit is connected with no less than 1 pair jack, the oil circuit pipeline between the hydraulic power unit and jack and set
Servo valve is equipped with, jack described in each pair is symmetrically disposed at the bearing both sides between bridge pier and floorings, the jacking thousand
Jin top/bottom part is provided with leveling backing plate, and the jack includes flat oil cylinder, is arranged on the in-oil cylinder piston of flat and work
Flat oil cylinder is separated into rodless cavity and rod chamber by stopper rod, the piston and piston rod, and the piston and piston rod are and flat
Seal assembly I and seal assembly II are respectively arranged between oil cylinder casing wall, the rodless cavity is communicated with oil inlet pipe, the flat oil
No less than 2 vertical fuel feed holes are evenly equipped with cylinder inboard wall of cylinder block, the vertical fuel feed hole lower end is connected with rodless cavity, it is described vertical
Fuel feed hole upper end is connected by horizontal fuel feed hole with rod chamber, and the piston rod and flat oil cylinder inner wall gap be set to 2~
10mm, the piston rod, which extends, is fixed with horizontally disposed displacement detecting piece on the wall of flat oil cylinder end side, the flat oil
Displacement detecting instrument corresponding with displacement detecting piece is provided with the outside of cylinder.
Further, the piston rod extends is fixed with horizontally disposed displacement detecting piece on the wall of flat oil cylinder end side,
Displacement detecting instrument corresponding with displacement detecting piece is provided with the outside of the flat oil cylinder.
Further, the flat oil cylinder includes integrally formed cylinder body and cylinder seat, and the cylinder body is close by sealing ring
It is enclosed on cylinder seat, the oil inlet pipe is connected on the wall of cylinder seat side.
Further, the cylinder seat is set to arcwall face positioned at the middle side part of rodless cavity one.
Further, the cylinder body bottom inside is provided with annular groove, and the vertical fuel feed hole is arranged in annular groove.
Further, the vertical fuel feed hole and horizontal fuel feed hole are set to 4, wherein in symmetrical 2 horizontal fuel feed holes
It is provided with check valve, the check valve is from rodless cavity to rod chamber one-way conduction.
The beneficial effects of the utility model are：
1st, a kind of bridge pad synchronous jacking device of the utility model in flat cylinder block inwall by being evenly equipped with not
The vertical fuel feed hole interconnected less than 2 pairs and horizontal fuel feed hole, using vertical fuel feed hole and horizontal fuel feed hole by flat oil cylinder
Rod chamber connected with rodless cavity, make the oil-feed simultaneously of rod chamber and rodless cavity, using rod chamber formation back pressure and rod chamber and
The difference in areas of rodless cavity, being reached by controlling input pressure makes jack slowly rise or decline, it is to avoid jack cylinder
Fluctuation, it is to avoid bridge declines too fast, the security of raising bridge construction；
2nd, a kind of bridge pad synchronous jacking device of the utility model passes through multigroup jack is symmetrically placed two-by-two
Between bridge pier and floorings, jacking is synchronized using same cross section, controlled by displacement detecting instrument and jack
Top lifting height is controlled within 5mm, it is to avoid jack is fluctuated, it is to avoid bridge declines too fast, the security of raising bridge construction.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing is illustrated：
Fig. 1 is the front sectional view of jack in a kind of bridge pad synchronous jacking device of the utility model；
Fig. 2 is a kind of vertical view cutaway drawing of bridge pad synchronous jacking device jack of the utility model；
Fig. 3 is a kind of structural representation of bridge pad synchronous jacking device of the utility model；
Fig. 4 is a kind of schematic diagram of bridge pad synchronous jacking device of the utility model.
Reference：1- cylinder bodies；2- piston rods；3- pistons；4- cylinders seat；5- sealing rings；6- oil inlet pipes；7- rodless cavities；8-
Vertical fuel feed hole；The horizontal fuel feed holes of 9-；10- rod chambers；11- displacement detecting instrument；12- displacement detecting pieces；13- seal assemblies I；
14- seal assemblies II；15- bearings；16- jacks；17- leveling backing plates；18- check valves.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
It is the front sectional view of jack in a kind of bridge pad synchronous jacking device of the utility model as shown in Figure 1；Such as
Fig. 2 show a kind of vertical view cutaway drawing of bridge pad synchronous jacking device jack of the utility model；It is illustrated in figure 3 this reality
With a kind of new structural representation of bridge pad synchronous jacking device；It is illustrated in figure 4 a kind of bridge pad of the utility model
The schematic diagram of synchronous jacking device, a kind of bridge pad synchronous jacking device of the utility model, including multigroup hydraulic power unit, it is described
Hydraulic power unit is connected with the oil circuit pipeline described in no less than 1 pair jack 16 between hydraulic power unit and jack and is provided with
Servo valve, jack 16 described in each pair is symmetrically disposed at the both sides of bearing 15 between bridge pier and floorings, the jacking thousand
Jin top/bottom part is provided with leveling backing plate 17, and the jack includes flat oil cylinder, is arranged on the in-oil cylinder and of piston 3 of flat
Flat oil cylinder is separated into rodless cavity 7 and rod chamber 10, the piston 3 and piston rod by piston rod 2, the piston 3 and piston rod 2
2 are respectively arranged with seal assembly I13 and seal assembly II14 between flat oil cylinder casing wall, the rodless cavity 7 be communicated with into
Be evenly equipped with no less than 2 vertical fuel feed holes 8 in oil pipe 6, the inwall of flat cylinder block 1, the vertical lower end of fuel feed hole 8 with
Rodless cavity 7 is connected, and the vertical upper end of fuel feed hole 8 is connected by horizontal fuel feed hole 9 with rod chamber 10, the piston rod 2 with it is flat
Shape oil cylinder inner wall gap is set to 2~10mm, the piston rod 2 extend be fixed with the wall of flat oil cylinder end side it is horizontally disposed
Displacement detecting piece 12, be provided with displacement detecting instrument 11 corresponding with displacement detecting piece 12, the structure on the outside of the flat oil cylinder
Be conducive to improving jack data accuracy, improve bridge construction safety.
The present embodiment is by the way that multigroup jack is symmetrically disposed between bridge pier and floorings two-by-two, by servo valve
Superstructure jack-up of the cylinder bridge is stretched in the synchronization of control jack, changes synchronous by jack after bridge pad
Lower landing beam；The hydraulic power unit is the offer power source of jack, is performed according to the instruction of PLC control system related dynamic
Make, drive jack stretches cylinder and contracting cylinder；Control system is the brain of jack-up system, and the step of command system is by regulation is acted；
The athletic posture of simultaneous real-time monitoring displacement detecting instrument, once overproof, system is alarmed and shut down immediately, it is ensured that component safety, is adopted
Jacking is synchronized with same cross section, top lifting height control is controlled within 5mm by displacement detecting instrument and jack,
Jack is avoided to fluctuate, it is to avoid bridge declines too fast, the security of raising bridge construction.
The present embodiment by be evenly equipped with flat cylinder block inwall the vertical fuel feed hole interconnected no less than 2 pairs and
Horizontal fuel feed hole, the rod chamber of flat oil cylinder is connected, make rod chamber using vertical fuel feed hole with horizontal fuel feed hole with rodless cavity
With rodless cavity oil-feed simultaneously, back pressure and the difference in areas of rod chamber and rodless cavity are formed using rod chamber, by controlling into oil pressure
Power makes jack slowly rise or decline to reach, it is to avoid jack cylinder is fluctuated, it is to avoid bridge declines too fast, raising bridge
The security of construction.
Further, the flat oil cylinder preferably includes integrally formed cylinder body and cylinder seat 4, and the cylinder body passes through close
Seal 5 is sealed on cylinder seat 4, and the oil inlet pipe 6 is connected on cylinder seat side wall, by bolt is passed through cylinder body in the structure close
Seal 5 is fixed on cylinder seat 4, is conducive to processing flat oil cylinder, is improved the intensity of flat oil cylinder.
Further, cylinder seat 4 preferably is set to arcwall face positioned at the middle side part of rodless cavity 7 one, and the structure is conducive to keeping away
Exempt from pressure oscillation during jacking, improve construction safety.
Further, the cylinder body bottom inside preferably is provided with annular groove, and the vertical fuel feed hole 7 is arranged at ring
In shape groove, the structure is conducive to flat cylinder structure simple, easy to process.
Further, the vertical fuel feed hole and horizontal fuel feed hole are set to 4, wherein in symmetrical 2 horizontal fuel feed holes
It is provided with check valve, the check valve is from rodless cavity to rod chamber one-way conduction
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model is described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims institute to it in the form and details
The scope of restriction.
Claims (5)
1. a kind of bridge pad synchronous jacking device, including multigroup hydraulic power unit, the hydraulic power unit are connected with no less than 1 pair top
Rise and be provided with servo valve on jack, the oil circuit pipeline between the hydraulic power unit and jack, it is characterised in that：Described in each pair
Jack is symmetrically disposed at the bearing both sides between bridge pier and floorings, and the jack bottom is provided with leveling pad
Plate, the jack includes flat oil cylinder, is arranged on the in-oil cylinder piston of flat and piston rod, the piston and piston rod
Flat oil cylinder is separated into rodless cavity and rod chamber, the piston and piston rod are respectively arranged between flat oil cylinder casing wall
Seal assembly I and seal assembly II, the rodless cavity, which is communicated with oil inlet pipe, the flat cylinder block inwall, to be evenly equipped with much
In 2 vertical fuel feed holes, the vertical fuel feed hole lower end is connected with rodless cavity, and the vertical fuel feed hole upper end passes through horizontal oil-feed
Hole is connected with rod chamber, and the piston rod is set to 2~10mm with flat oil cylinder inner wall gap, and the piston rod extends flat
It is fixed with the outside of horizontally disposed displacement detecting piece, the flat oil cylinder and is provided with and displacement detecting piece pair on the wall of oil cylinder end side
The displacement detecting instrument answered.
2. a kind of bridge pad synchronous jacking device as claimed in claim 1, it is characterised in that：The flat oil cylinder includes one
Body formed cylinder body and cylinder seat, the cylinder body are sealed on cylinder seat by sealing ring, and the oil inlet pipe is connected to cylinder seat side
On wall.
3. a kind of bridge pad synchronous jacking device as claimed in claim 2, it is characterised in that：The cylinder seat is located at rodless cavity
One middle side part is set to arcwall face.
4. a kind of bridge pad synchronous jacking device as claimed in claim 2, it is characterised in that：The cylinder body bottom inside
Annular groove is provided with, the vertical fuel feed hole is arranged in annular groove.
5. a kind of bridge pad synchronous jacking device as claimed in claim 2, it is characterised in that：The vertical fuel feed hole and water
Flat fuel feed hole is set to 4, wherein be provided with check valve in symmetrical 2 horizontal fuel feed holes, the check valve from rodless cavity to
Rod chamber one-way conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720211889.7U CN206545176U (en) | 2017-03-03 | 2017-03-03 | Bridge pad synchronous jacking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720211889.7U CN206545176U (en) | 2017-03-03 | 2017-03-03 | Bridge pad synchronous jacking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206545176U true CN206545176U (en) | 2017-10-10 |
Family
ID=59994442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720211889.7U Active CN206545176U (en) | 2017-03-03 | 2017-03-03 | Bridge pad synchronous jacking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206545176U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751026A (en) * | 2018-07-12 | 2018-11-06 | 肖松南 | A kind of jack and jacking apparatus for bridge jacking |
| CN112878203A (en) * | 2021-01-26 | 2021-06-01 | 江苏筑港建设集团有限公司 | Lifting beam operation method for synchronously jacking beam body |
| CN114922058A (en) * | 2022-07-04 | 2022-08-19 | 长沙理工大学 | Hydraulic support capable of achieving secondary accurate height adjustment |
-
2017
- 2017-03-03 CN CN201720211889.7U patent/CN206545176U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751026A (en) * | 2018-07-12 | 2018-11-06 | 肖松南 | A kind of jack and jacking apparatus for bridge jacking |
| CN112878203A (en) * | 2021-01-26 | 2021-06-01 | 江苏筑港建设集团有限公司 | Lifting beam operation method for synchronously jacking beam body |
| CN114922058A (en) * | 2022-07-04 | 2022-08-19 | 长沙理工大学 | Hydraulic support capable of achieving secondary accurate height adjustment |
| CN114922058B (en) * | 2022-07-04 | 2024-01-12 | 长沙理工大学 | Hydraulic support capable of being secondarily and accurately heightened |
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