CN204003714U - Jacking hydraulic system - Google Patents
Jacking hydraulic system Download PDFInfo
- Publication number
- CN204003714U CN204003714U CN201420405549.4U CN201420405549U CN204003714U CN 204003714 U CN204003714 U CN 204003714U CN 201420405549 U CN201420405549 U CN 201420405549U CN 204003714 U CN204003714 U CN 204003714U
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- valve
- jacking
- slave station
- selector valve
- jack
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- 238000006073 displacement reaction Methods 0.000 claims description 38
- 239000002828 fuel tank Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 description 16
- 239000012530 fluid Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of jacking hydraulic system, belong to hydraulic lifting technical field, solved the limited amount at the control point of existing semi-automatic hydraulic jack-up system, and the precision of each control point synchronization of jacking up is poor, is difficult to the problem of the demand that meets current building.This jacking hydraulic system, comprises a main website and at least one slave station, provides oil pressure by main website for the jack in each slave station, and the first ball valve in each slave station and the second ball valve can also further improve the control accuracy of piston and piston rod.
Description
Technical field
The utility model relates to hydraulic lifting technical field, specifically, relates to a kind of jacking hydraulic system.
Background technique
Along with the building of various places is more and more, synchronous jacking system is also more and more applied in the jacking process of building.
At present, in the jacking process of building, common employing semi-automatic hydraulic jack-up system, these semi-automatic hydraulic jack-up systems can solve heavily loaded jacking problem preferably.But for the large weight of complex structure, load skewness, the situation of large volume, need to increase the control point of jacking, and the limited amount at the control point of existing semi-automatic hydraulic jack-up system, and the precision of each control point synchronization of jacking up is poor, be difficult to meet the demand of current building.
Model utility content
The purpose of this utility model is to provide a kind of jacking hydraulic system, to solve the poor technical problem of precision of multiple control points synchronization of jacking up in prior art.
The utility model provides a kind of jacking hydraulic system, comprises a main website and at least one slave station;
Described main website comprises fuel tank, the first selector valve, Pilot operated check valve, digital relief valve, pressure transducer and controller;
Described fuel tank is by being communicated with described the first selector valve with the oil pump of variable-frequency motor, described pressure transducer is arranged between described oil pump and described the first selector valve, described the first selector valve is communicated with first interface and the second interface, described Pilot operated check valve is connected between described the first selector valve and described first interface, and described digital relief valve is arranged between described Pilot operated check valve and described first interface;
Each described slave station comprises jack, and the oil cylinder in described jack is divided into the first cavity and the second cavity by the piston in described jack, and described piston is connected with piston rod, and described jack is provided with the sensor of measuring jacking displacement;
Described the first cavity is communicated with described first interface by in-line and oil circuit respectively, is connected with the first ball valve in described in-line, is connected with the second ball valve in described oil circuit, and described the second cavity is communicated with described the second interface;
Described the first selector valve, described digital relief valve, described pressure transducer, and displacement transducer, the first ball valve and the second ball valve in each described slave station, be all connected with described controller.
Further, described main website also comprises the second selector valve, and described the second selector valve is connected between described oil pump and the control end of described Pilot operated check valve.
Preferably, described the first selector valve and described the second selector valve are three position four-way directional control valve.
Preferably, described controller comprises PLC.
The utility model has brought following beneficial effect: the jacking hydraulic system that the utility model provides is made up of a main website and multiple slave station, the quantity of slave station can be set according to actual needs, to realize Multi-point synchronization jacking.And, providing oil pressure by main website for the jack in each slave station, the first ball valve in each slave station and the second ball valve can also further improve the control accuracy of piston and piston rod.Therefore the jacking hydraulic system that, the utility model provides can be realized the synchronization of jacking up at high-precision multiple control points and synchronously return back to top.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages can be realized and be obtained by specifically noted structure in specification, claims and accompanying drawing.
Brief description of the drawings
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, in describing embodiment below, needed accompanying drawing does simple introduction:
Fig. 1 is the schematic diagram of the main website of the jacking hydraulic system that provides of the utility model embodiment;
Fig. 2 is the schematic diagram of the slave station of the jacking hydraulic system that provides of the utility model embodiment;
Fig. 3 is the flow chart of the jacking method of the jacking hydraulic system that provides of the utility model embodiment;
Fig. 4 is the flow chart of the method that returns back to top of the jacking hydraulic system that provides of the utility model embodiment.
Embodiment
Describe mode of execution of the present utility model in detail below with reference to drawings and Examples, to the utility model, how application technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each feature in each embodiment and each embodiment in the utility model can mutually combine, and the technological scheme forming is all within protection domain of the present utility model.
As depicted in figs. 1 and 2, the utility model embodiment provides a kind of jacking hydraulic system, comprises a main website 100 and at least one slave station 200.
Main website 100 comprises fuel tank 1, the first selector valve 21, Pilot operated check valve 3, digital relief valve 4, pressure transducer 5 and controller (not shown).
Fuel tank 1 is communicated with the first selector valve 21 by the oil pump 12 with variable-frequency motor 11, and pressure transducer 5 is arranged between oil pump 12 and the first selector valve 21.In addition, the pressure gauge 50 being connected with pressure transducer 5 can also be set, so that the reading of real-time monitored pressure transducer 5.
The first selector valve 21 is communicated with first interface 61 and the second interface 62, and Pilot operated check valve 3 is connected between the first selector valve 21 and first interface 61, and digital relief valve 4 is arranged between Pilot operated check valve 3 and first interface 61.
Each slave station 200 comprises jack 7, and the oil cylinder in jack 7 is divided into the first cavity 71 and the second cavity 72 by the piston 70 in jack 7, and piston 70 is connected with piston rod 73, and piston rod 73 is connected with displacement transducer (not shown).Wherein, the relative displacement that displacement transducer stretches out for real-time sensing piston 70 and piston rod 73.
The first cavity 71 is communicated with first interface 61 by in-line and oil circuit respectively, is connected with the first ball valve 81 in in-line, is connected with the second ball valve 82, the second cavitys 72 and is communicated with the second interface 62 in oil circuit.In addition, on in-line, also can be provided with pressure transducer 5.
The first selector valve 21, digital relief valve 4, pressure transducer 5, and displacement transducer, the first ball valve 81 and the second ball valve 82 in each slave station, be all connected with controller.Wherein, in controller, can comprise programmable logic controller (PLC) (Programmable Logic Controller is called for short PLC).
In the present embodiment, in main website 100, also further comprise that the second selector valve 22, the second selector valves 22 are connected between oil pump 12 and the control end of Pilot operated check valve 3.The first selector valve 21 and the second selector valve 22 are all preferably three position four-way directional control valve.
The working principle of this jacking hydraulic system is as follows:
In main website 100, variable-frequency motor 11 drives oil pump 12 to start, and the first selector valve 21 and the second selector valve 22 all mediate at the beginning.Now system is in unloading condition, and the fluid of the oil outlet output of oil pump 12 flows back to fuel tank 1 through the second selector valve 22.
In the time that the second selector valve 22 switches to right position, the first selector valve 21 and switches to left position, the fluid of the oil outlet output of oil pump 12 enters each slave station 200 through the first selector valve 21, Pilot operated check valve 3 and first interface 61 successively.Open the first ball valve 81 in each slave station 200, fluid can enter the first cavity 71 of the jack 7 in each slave station 200.
In the present embodiment, digital relief valve 4 is inner for stepper motor promotes push rod Compress Spring by gear transmission, screw thread guiding, and spring top is pressed cone valve, control step motor position adjustable springs decrement, thereby controlling water kick pressure.Therefore, the pressure in jacking hydraulic system determines by the pressure of digital relief valve 4 medi-springs, and now the spring in digital relief valve 4 is in pressure-less state, so there is no pressure in system, the piston 70 in jack 7 and piston rod 73 transfixions.Then, slowly regulate digital relief valve 4 by controller, piston 70 moves under the effect of fluid, and in the time reaching required pressure, digital relief valve 4 stops continuing supercharging to ensure security of system.If just in case there is the situation of system overload, pressure exceedes the predetermined pressure of safety valve 41, safety valve 41 can open to ensure security of system moment.
In the time that jack 7 needs pressurize, by controller, the second selector valve 22 is switched to neutral position, the fluid of the oil outlet output of oil pump 12 flows back to fuel tank 1 through the second selector valve 22, and the fluid in jack 7 is realized pressurize by the first ball valve 81 and the second ball valve 82 sealings.In the time that oil liquid leakage build-up of pressure declines, only need to switch the second selector valve 22 and just can realize ftercompction.
When fluid backhaul in the first cavity 71 of jack 7, first by controller, the pressure of digital relief valve 4 is turned down to below 95% of former working pressure, opened the second ball valve 82 of each slave station, fluid flows back to fuel tank 1 through digital relief valve 4 under load gravity pressure.Now can, by adjusting the pressure of digital relief valve 4, realize band and carry the function declining.
In the time that load external force is eliminated, if piston 70 and piston rod 73 are not also got back to position completely, can the first selector valve 21 be switched to right position by controller, the second selector valve 22 is switched to left position.The fluid of the oil outlet output of oil pump 12 flows into the control end of Pilot operated check valve 3 through the second selector valve 22, Pilot operated check valve 3 can reversely be circulated.When the pressure of the control end of Pilot operated check valve 3 exceedes the predetermined pressure of safety valve 42, safety valve 42 can open to ensure security of system.
The fluid of the oil outlet output of oil pump 12 flows into the second cavity 72 of each jack 7 through the first selector valve 21, promote piston 70 and piston rod 73 and return.In this process, if there is overload, safety valve 43 can open to ensure security of system in time.Meanwhile, the fluid in the first cavity 71 of jack 7 flows back to fuel tank 1 through Pilot operated check valve 3 and the first selector valve 21.
The utility model embodiment also provides a kind of jacking method of this jacking hydraulic system, can realize the synchronization of jacking up at high-precision multiple control points.As shown in Figure 3, this jacking method comprises:
S1: system is carried out to initialization.
First set the parameters such as the target location of synchronization of jacking up, then regulated the pressure of digital relief valve by controller, and open the first ball valve of each slave station, the first cavity oil-feed by main website to jack in each slave station.
S2: by pressure transducer reading system pressure, and by controller judge current system pressure whether higher than the pressure of weighing 2 to 3Mpa.
If it is by the first ball valve of the each slave station of controller control, make each piston rod carry out jacking.If not, return to step S1, continue pressurization.
S3: carry out in jacking process at each jack, read the displacement of every Jacking point place displacement transducer of each slave station, calculate the displacement difference at each Jacking point place, and by the first ball valve of the each slave station of controller control, keep the displacement difference at each Jacking point place within control accuracy scope, until the jacking displacement at each Jacking point place all arrives target location.
Specifically comprise:
S31: read the displacement at every Jacking point place of each slave station, calculate the displacement difference at each Jacking point place.
S32: judge that whether maximum displacement in each Jacking point place and the difference of least displacement are greater than control accuracy, if it is carry out step S33, otherwise carry out step S34.
As a preferred version, this control accuracy is ± 0.5mm.
S33: regulate variable-frequency motor, reduce oil pump flow, and return to step S31.
S34: judge whether maximum displacement in each Jacking point place and the difference of least displacement are greater than 0.6 times of control accuracy.
If this difference is not more than 0.6 times of control accuracy, (continuation) open the first ball valve of each slave station, carry out synchronization of jacking up.If this difference is greater than 0.6 times of control accuracy, can also further judge whether the difference of the place's displacement of each Jacking point and least displacement is greater than 0.8 times of control accuracy.
If this difference is not more than 0.8 times of control accuracy, (continuation) open the first ball valve of each slave station, carry out synchronization of jacking up.If this difference is greater than 0.8 times of control accuracy, the Jacking point place of closing displacement maximum slave station in the first ball valve.
Then, carry out step S35.
S35: whether the jacking displacement that judges each Jacking point place all arrives target location, if it is finishes jacking, otherwise returns to step S31.
The utility model embodiment also provides a kind of method that returns back to top of this jacking hydraulic system, can realize synchronously returning back to top of high-precision multiple control points.As shown in Figure 4, this jacking method comprises:
S1: system is carried out to initialization.
First read the parameters such as the initial position returning back to top, then regulated the pressure of digital relief valve by controller, and open the second ball valve of each slave station, make the fluid in the first cavity of jack in each slave station flow back to fuel tank by digital relief valve.
S2: by pressure transducer reading system pressure, and by controller judge current system pressure whether lower than the pressure of weighing 3 to 5Mpa.
If it is by the second ball valve of the each slave station of controller control, each piston rod is returned back to top.If not returning to step S1, continue step-down.
S3: return back to top in process at each jack, read the displacement of every Jacking point place displacement transducer of each slave station, calculate the displacement difference at each Jacking point place, and by the second ball valve of the each slave station of controller control, keep the displacement difference at each Jacking point place within control accuracy scope, until the jacking displacement at each Jacking point place all arrives target location.
Specifically comprise:
S31: read the displacement at the Jacking point place of each slave station, calculate the displacement difference at each Jacking point place.
S32: judge that whether maximum displacement in each Jacking point place and the difference of least displacement are greater than control accuracy, if it is carry out step S33, otherwise carry out step S34.
As a preferred version, this control accuracy is ± 0.5mm.
S33: regulate variable-frequency motor, reduce oil pump flow, and return to step S31;
S34: judge whether maximum displacement in each Jacking point place and the difference of least displacement are greater than 0.6 times of control accuracy.
If this difference is not more than 0.6 times of control accuracy, (continuation) open the second ball valve of each slave station, synchronously return back to top.If this difference is greater than 0.6 times of control accuracy, can also further judge whether the difference of the place's displacement of each Jacking point and least displacement is greater than 0.8 times of control accuracy.
If this difference is not more than 0.8 times of control accuracy, (continuation) open the second ball valve of each slave station, synchronously return back to top.If this difference is greater than 0.8 times of control accuracy, the Jacking point place of closing displacement maximum slave station in the second ball valve.
Then, carry out step S35.
S35: whether the jacking displacement that judges each Jacking point place all arrives target location, if it is finishes to return back to top, otherwise returns to step S31.
The jacking hydraulic system that the utility model provides is made up of a main website and multiple slave station, the quantity of slave station can be set according to actual needs, to realize Multi-point synchronization jacking.And, providing oil pressure by main website for the jack in each slave station, the first ball valve in each slave station and the second ball valve can also further improve the control accuracy of piston and piston rod.Therefore, the jacking hydraulic system that the utility model provides and jacking method thereof and the method that returns back to top, can realize the synchronization of jacking up at high-precision multiple control points and synchronously return back to top, can reach ± 0.5mm of synchronization accuracy.
Although mode of execution disclosed in the utility model as above, the mode of execution that described content just adopts for the ease of understanding the utility model, not in order to limit the utility model.Technician under any the utility model in technical field; do not departing under the prerequisite of spirit and scope disclosed in the utility model; can do any amendment and variation what implement in form and in details; but scope of patent protection of the present utility model, still must be as the criterion with the scope that appending claims was defined.
Claims (4)
1. a jacking hydraulic system, is characterized in that, comprises a main website and at least one slave station;
Described main website comprises fuel tank, the first selector valve, Pilot operated check valve, digital relief valve, pressure transducer and controller;
Described fuel tank is by being communicated with described the first selector valve with the oil pump of variable-frequency motor, described pressure transducer is arranged between described oil pump and described the first selector valve, described the first selector valve is communicated with first interface and the second interface, described Pilot operated check valve is connected between described the first selector valve and described first interface, and described digital relief valve is arranged between described Pilot operated check valve and described first interface;
Each described slave station comprises jack, and the oil cylinder in described jack is divided into the first cavity and the second cavity by the piston in described jack, and described piston is connected with piston rod, and described jack is provided with the sensor of measuring jacking displacement;
Described the first cavity is communicated with described first interface by in-line and oil circuit respectively, is connected with the first ball valve in described in-line, is connected with the second ball valve in described oil circuit, and described the second cavity is communicated with described the second interface;
Described the first selector valve, described digital relief valve, described pressure transducer, and displacement transducer, the first ball valve and the second ball valve in each described slave station, be all connected with described controller.
2. jacking hydraulic system as claimed in claim 1, is characterized in that, described main website also comprises the second selector valve, and described the second selector valve is connected between described oil pump and the control end of described Pilot operated check valve.
3. jacking hydraulic system as claimed in claim 2, is characterized in that, described the first selector valve and described the second selector valve are three position four-way directional control valve.
4. jacking hydraulic system as claimed in claim 1, is characterized in that, described controller comprises PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405549.4U CN204003714U (en) | 2014-07-22 | 2014-07-22 | Jacking hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420405549.4U CN204003714U (en) | 2014-07-22 | 2014-07-22 | Jacking hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003714U true CN204003714U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420405549.4U Expired - Fee Related CN204003714U (en) | 2014-07-22 | 2014-07-22 | Jacking hydraulic system |
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| Country | Link |
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| CN (1) | CN204003714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100590A (en) * | 2014-07-22 | 2014-10-15 | 湖南联智桥隧技术有限公司 | Jacking hydraulic system and jacking and back-jacking methods thereof |
-
2014
- 2014-07-22 CN CN201420405549.4U patent/CN204003714U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100590A (en) * | 2014-07-22 | 2014-10-15 | 湖南联智桥隧技术有限公司 | Jacking hydraulic system and jacking and back-jacking methods thereof |
| CN104100590B (en) * | 2014-07-22 | 2016-04-27 | 湖南联智桥隧技术有限公司 | Jacking hydraulic system and jacking method thereof and the method that returns back to top |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.168, Section 2, Yanhe Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Hunan Lianzhi Technology Co.,Ltd. Address before: 410019 Yanhe Road, economic development zone, Wangcheng County, Changsha City, Hunan Province Patentee before: HUNAN LIANZHI BRIDGE AND TUNNEL TECHNOLOGY Co.,Ltd. |
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| 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: 20141210 |