CN207129886U - A kind of bridge hydraulic jacking device - Google Patents
A kind of bridge hydraulic jacking device Download PDFInfo
- Publication number
- CN207129886U CN207129886U CN201720228836.6U CN201720228836U CN207129886U CN 207129886 U CN207129886 U CN 207129886U CN 201720228836 U CN201720228836 U CN 201720228836U CN 207129886 U CN207129886 U CN 207129886U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- hydraulic cylinder
- screw thread
- bridge
- jacking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of bridge hydraulic jacking device, including at least two jacking parts, the jacking part includes hydraulic actuator, the hydraulic actuator includes hydraulic cylinder, piston and piston rod, and the piston is arranged in the hydraulic cylinder and the piston rod can be promoted to be set relative to the hydraulic cylinder axial stretching；The hydraulic cylinder is built with hydraulic oil, and at least two in the hydraulic cylinder are arranged in series by balance pipe.The safety and reliability of the utility model energy lifting member jack-up construction process.
Description
Technical field
It the utility model is related to a kind of bridge hydraulic jacking device.
Background technology
In recent years, Bridges in Our Country construction obtains universally acknowledged achievement, increasing rapidly and handing over however as national economy
The development of interpreter's industry, the bridge being largely used is with the growth of service life, or even indivedual spanning knots just to have put into effect
Structure can not meet the allocation plan in city and national cruiseway and harbour and the needs of development.Due to bridge structure form
Different, bridge jacking has certain technical difficulty, and bridge hydraulic jack in jack-up construction is the support of bridge structure, is
The lifting of superstructure and other application provide reliable guarantee, and it counts for much, once breaking down, will have influence on whole
Individual structure and the safety of personnel.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided a kind of bridge is filled with hydraulic lifting
Put.
To realize object above, the utility model is achieved through the following technical solutions：
A kind of bridge hydraulic jacking device, including at least two jacking parts, the jacking part include hydraulic actuation
Cylinder, the hydraulic actuator include hydraulic cylinder, piston and piston rod, and the piston is arranged in the hydraulic cylinder and can promote institute
Piston rod is stated to set relative to the hydraulic cylinder axial stretching；The hydraulic cylinder is built with hydraulic oil, and the hydraulic cylinder
In at least two be arranged in series by balance pipe.By setting at least two jacking parts, the bridge hydraulic jacking device
At work, the bridge or its part stress jacked is more uniformly distributed, and avoids structure caused by stress raisers from destroying, preferably
Ground ensure that the reliability of bridge；Load will be jacked to multiple jacking parts so that single jacking part pressure is big
Big to reduce, so as to greatly improve the reliability of jacking part and whole bridge hydraulic jacking device, it is right in work progress to reduce
Bridge structure and the security risk of engineering staff；Connected by balance pipe and jack the hydraulic cylinder of part, then can balance each of series connection
Jack part hydraulic pressure so that each jacking component load is balanced, and can be in the synchronization of jacking up of jacking part or decline of series connection
Buffering hydraulic switching impact to caused by load, so as to improve the reliability of jacking apparatus and jack the security of work.
According to one embodiment of the present utility model, bridge hydraulic jacking device also includes balanced valve, described flat
Weighing apparatus valve is normally closed and sets while the hydraulic cylinder and the balance pipe are connected when hydraulic fluid pressure is more than preset pressure in hydraulic cylinder
Put.When the balanced valve is closed, jacking apparatus decompression can be avoided to glide, as long as hydraulic fluid pressure is no more than default pressure in hydraulic cylinder
Power, even if pipeline rupture, the workpiece of jacking will not also fall, and improve the security of jacking work；And when the liquid in hydraulic cylinder
Oil pressure is higher than preset pressure, and balanced valve is opened, and balances the pressure of each hydraulic cylinder of series connection, sheds local too high oil
Pressure so that each jacking component load is balanced, so as to improve the reliability of jacking apparatus and jack the security of work.Especially
It is, when the jacking part of multiple series connection supports same load jointly, when falling load, corresponding to the larger jacking part of load
Balanced valve can be first turned on and release, it is ensured that the synchronous landing of each jacking part, is further ensured that jacking safety.
According to one embodiment of the present utility model, the balanced valve is cone valve.Cone valve pollutes not to the impurity in fluid
Sensitivity, and it is simple in construction, fault rate is low.By changing the gap between the valve element of cone valve and valve seat, oil can be switched on and off
Road：When valve element only contacts with the conical surface of valve seat under certain pressure effect, valve is at closed mode；When valve element and valve
When having gap between seat, then oil circuit is open-minded, and has throttling action, absorbs hydraulic pressure fluctuation impact to caused by load so that
Jacking to workpiece is more steady.
According to one embodiment of the present utility model, at least two in the hydraulic cylinder are connected into by the balance pipe
Loop.After being connected into loop, the pressure energy apart from the hydraulic cylinder of fuel feed pump farther out is quickly balanced, and is improved
The load balance ability of bridge hydraulic jacking device, further increase the security of jacking work.
According to one embodiment of the present utility model, the bridge also includes supercharging device and fuel feeding with hydraulic jacking device
Pipe, the fuel feed pump first end connect the supercharging device, and the second end connects the jacking part.
According to one embodiment of the present utility model, second end is connected at least one hydraulic cylinder, Huo Zhesuo
State the second end and be connected to the balance pipe.When second end is connected to hydraulic cylinder, system is easy to safeguard, disconnect the hydraulic cylinder and
The i.e. cut-off supercharging device of the connection of balance pipe；When second end is connected to the balance pipe, be then advantageous to corresponding hydraulic pressure
The load balancing of cylinder.
According to one embodiment of the present utility model, the bridge also includes frame and at least one with hydraulic jacking device
Screw thread self-locking part, the hydraulic cylinder are fixed on the frame；The screw thread self-locking part includes being fixed on the drive of the frame
Dynamic device, in addition to the first screw thread and the second screw thread being engaged, first screw thread and second screw thread are self-locking thread；
First screw thread is driven and axial rotation by the drive device, and described second, which is screwed, is connected at least one institute
State piston rod corresponding to hydraulic cylinder.When the first screw thread and the intermeshing of the second screw thread and self-locking, the bridge are filled with hydraulic lifting
Putting can also mechanically carry out jacking work, even if hydraulic failure remains to jack safely, ensure that replacing follows top cushion block
When be perfectly safe.
According to one embodiment of the present utility model, the engagement travel of first screw thread and second screw thread for 30~
80mm。
According to one embodiment of the present utility model, the stroke of the piston rod is 120~180mm, the hydraulic actuation
The total a height of 350~400mm of cylinder.
According to one embodiment of the present utility model, the drive device is hydraulic motor or motor.Work as drive device
For hydraulic motor, it can be directly accessed hydraulic system, without arranging power in addition；When drive device is motor, then with hydraulic pressure
System is separate, when especially coordinating self-locking thread, can be jacked by driven by power, form multiplicated system, improved
Jacking security and efficiency.
According to one embodiment of the present utility model, the operating pressure of the hydraulic oil is 50Mpa~80Mpa, the liquid
Pressurized strut is pressed to be set for double acting, top lift is 150~250 tons, and bottom footpath is 220~260mm.Double acting, which is set, causes liquid
Press pressurized strut piston rod under the promotion of hydraulic oil, can stretch out can also retraction hydraulic cylinder, work it is more steady, improve safety
Property.
Compared with prior art, the utility model at least possesses following beneficial effect：
1) bridge or its part stress jacked is more uniformly distributed, and avoids structure caused by stress raisers from destroying, compared with
The reliability of bridge is ensure that well；
2) each jacking part hydraulic pressure for being used to jack bridge of series connection can be balanced so that each jacking component load is equal
Weighing apparatus, and the impact to caused by load can be switched by buffering hydraulic in the synchronization of jacking up of jacking part or decline of series connection, so as to improve
The reliability of jacking apparatus and the security for jacking work；
3) by setting self-locking thread structure, so as to mechanically carry out jacking work, even if hydraulic failure is still
It can safely jack, ensure that replacing follows the being perfectly safe during cushion block of top.
Brief description of the drawings
Fig. 1 is a kind of bridge hydraulic jacking device based on the utility model one embodiment；
Fig. 2 is a kind of bridge hydraulic jacking device based on another embodiment of the utility model；
Fig. 3 is a kind of bridge hydraulic jacking device based on another embodiment of the utility model.
Embodiment
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instructions such as " clockwise ", " counterclockwise " be based on orientation shown in the drawings or position relationship, be only for
Be easy to describe the utility model and simplify to describe, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
" under " can directly be contacted including the first and second features, it is not directly to contact but lead to that can also include the first and second features
The other characterisation contact crossed between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature directly over second feature and oblique upper, or only
Represent that fisrt feature level height is less than second feature.
The utility model is described in detail below in conjunction with the accompanying drawings：
Embodiment one
With reference to figure 1, bridge hydraulic jacking device, for jacking workpiece 1 to be jacked, it includes the first jacking part and the
Two jacking parts.First jacking part includes the first hydraulic actuator 2, and the first hydraulic actuator 2 includes first hydraulic cylinder 21, the
One piston 22 and First piston bar 23, first piston 22 promote First piston bar 23 to transport axially along in first hydraulic cylinder 21
It is dynamic, so as to promote workpiece 1 to be jacked to move；Second hydraulic actuator, 3 similar setting, it will not go into details.First hydraulic cylinder 21 and
Hydraulic oil 4 is respectively arranged with two hydraulic cylinders.The two inner chamber is connected by balance pipe 5, and is passed through pressurization by supercharging device (not shown)
Hydraulic oil 4, hydraulic working oil pressure is 63Mpa, and the stroke of piston rod is 140mm.
The total a height of 366mm of first hydraulic actuator 2 and the second hydraulic actuator 3, double acting setting and bottom footpath is 244mm.
In other embodiments, three, four even more jacking portions also can be set with hydraulic jacking device in the bridge
Part, they pass through in sequential series by balance pipe 5 with above-mentioned similar mode.
In addition, in addition to unidirectional pressurized strut as shown in Figure 1 is set and is used to jack, also settable double action cylinder, now,
By taking the first hydraulic actuator 2 as an example, the inner space of first hydraulic cylinder 21 is divided into two parts up and down by first piston 22.In this base
On plinth, further to improve the effect of load balance, the corresponding upper and lower part of hydraulic cylinder of series connection is connected with balance pipe respectively.
In further embodiments, the hydraulic cylinder respectively connected is linked to be closed loop by balance pipe.
" on ", " under " described in this example be using Fig. 1 as with reference to, use for clear explanation the utility model it is relatively general
Read.
Embodiment two
On the basis of embodiment one, with reference to figure 2, balanced valve 6 is set on every balance pipe 5, wherein, balanced valve 6 is
Cone valve, mutual hydraulic pressure contact between the hydraulic cylinder for blocking series connection when oil liquid pressure is less than preset pressure, and in fluid
Opened when pressure is more than preset pressure, the hydraulic cylinder at equalizing pipe both ends and balance the load, and play throttling, the work buffered
With.
The setting that should be noted balanced valve 6 in figure is only to illustrate, and actual capabilities are present more than a balance pipe 5 and/or multiple
Balanced valve 6, and the installation site of balanced valve 6 can be optional position or to be installed on balance pipe 5 on the cylinder body of hydraulic cylinder.
Embodiment three
On the basis of embodiment two, one or more screw thread self-locking parts are set.With reference to figure 3, to make in the first hydraulic pressure
Dynamic cylinder relevant position is threaded exemplified by latching member, and screw thread self-locking part includes the first screw thread 81, the second screw thread 82 and power
Device 83.First screw thread 81 is fixed in First piston bar 23, is external screw thread, and under the stroke of First piston bar 23
End；Second screw thread 82 is then internal thread, and rotation is driven by power set 83, and power set 83 are installed in frame 7.First spiral shell
The screw thread 82 of line 81 and second is self-locking thread.When the second screw thread 82 and the first screw thread 81 engage, power set 83 drive the second spiral shell
Line 82 rotates relative to the first screw thread 81, you can driving First piston bar 23 moves up and down, so as to lift or reduce work to be jacked
Part 1.
Wherein, the engagement travel of the first screw thread 81 and the second screw thread 82 is 50mm.
In other embodiments, can be in multiple or all hydraulic pressurized strut correspondence position, ibid principle is threaded self-locking
Part.
Power set 83 are the hydraulic motor for being connected to bridge hydraulic jacking device hydraulic system, or are motor.
" on ", " under " described in this example be using Fig. 3 as with reference to, use for clear explanation the utility model it is relatively general
Read.
Embodiment in the utility model is only used for illustrating the utility model, does not form to right
Limitation, other substantially equivalent replacements that those skilled in that art are contemplated that, in scope of protection of the utility model
It is interior.
Claims (9)
1. a kind of bridge hydraulic jacking device, it is characterised in that including at least two jacking parts, the jacking part includes
Hydraulic actuator, the hydraulic actuator include hydraulic cylinder, piston and piston rod, and the piston is arranged in the hydraulic cylinder simultaneously
The piston rod can be promoted to be set relative to the hydraulic cylinder axial stretching；The hydraulic cylinder is built with hydraulic oil, and institute
At least two stated in hydraulic cylinder are arranged in series by balance pipe；Also include balanced valve, the balanced valve is arranged at the balance
Guan Shang；The balanced valve is normally closed and the hydraulic cylinder and described is connected when hydraulic fluid pressure is more than preset pressure in hydraulic cylinder
Set balance pipe.
2. bridge hydraulic jacking device according to claim 1, it is characterised in that the balanced valve is cone valve.
3. bridge hydraulic jacking device according to claim 1 or 2, it is characterised in that in the hydraulic cylinder at least
Two are connected into loop by the balance pipe.
4. bridge hydraulic jacking device according to claim 1, it is characterised in that also including supercharging device and fuel feeding
Pipe, the fuel feed pump first end connect the supercharging device, and the second end connects the jacking part, second end be connected to
A few hydraulic cylinder, or second end are connected to the balance pipe.
5. according to the bridge hydraulic jacking device described in claim 1 or 2 or 4, it is characterised in that also including frame and at least
One screw thread self-locking part, the hydraulic cylinder are fixed on the frame；The screw thread self-locking part includes being fixed on the frame
Drive device, in addition to the first screw thread and the second screw thread being engaged, first screw thread and second screw thread are self-locking
Screw thread；First screw thread is driven and axial rotation by the drive device, described second is screwed be connected to it is described at least
Piston rod corresponding to one hydraulic cylinder.
6. bridge hydraulic jacking device according to claim 5, it is characterised in that first screw thread and described second
The engagement travel of screw thread is 30~80mm.
7. bridge hydraulic jacking device according to claim 6, it is characterised in that the stroke of the piston rod is 120
~180mm, the total a height of 350~400mm of the hydraulic actuator.
8. bridge hydraulic jacking device according to claim 5, it is characterised in that the drive device is hydraulic motor
Or motor.
9. according to the bridge hydraulic jacking device described in claim 1 or 2 or 4, it is characterised in that the work of the hydraulic oil
Pressure is 50~80Mpa, and the hydraulic actuator is that double acting is set, and top lift is 150~250 tons, and bottom footpath be 220~
260mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228836.6U CN207129886U (en) | 2017-03-10 | 2017-03-10 | A kind of bridge hydraulic jacking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228836.6U CN207129886U (en) | 2017-03-10 | 2017-03-10 | A kind of bridge hydraulic jacking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207129886U true CN207129886U (en) | 2018-03-23 |
Family
ID=61630217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720228836.6U Expired - Fee Related CN207129886U (en) | 2017-03-10 | 2017-03-10 | A kind of bridge hydraulic jacking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207129886U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550570A (en) * | 2019-10-08 | 2019-12-10 | 南京东交加固工程有限公司 | Self-locking bridge jacking device |
| CN111573421A (en) * | 2020-04-19 | 2020-08-25 | 姚娟娟 | Weaving is with weaving equipment convenient to change line book |
| CN114408095A (en) * | 2022-01-24 | 2022-04-29 | 福州大学 | Large offshore platform mooring cable tension coordination assembly and use method thereof |
-
2017
- 2017-03-10 CN CN201720228836.6U patent/CN207129886U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550570A (en) * | 2019-10-08 | 2019-12-10 | 南京东交加固工程有限公司 | Self-locking bridge jacking device |
| CN111573421A (en) * | 2020-04-19 | 2020-08-25 | 姚娟娟 | Weaving is with weaving equipment convenient to change line book |
| CN111573421B (en) * | 2020-04-19 | 2021-08-17 | 安徽湖晟纺织科技有限公司 | Weaving is with weaving equipment convenient to change line book |
| CN114408095A (en) * | 2022-01-24 | 2022-04-29 | 福州大学 | Large offshore platform mooring cable tension coordination assembly and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180323 Termination date: 20200310 |