CN1560482A - Shield tunneling machine hydraulic propulsion system using proportional flow pressure compound control - Google Patents
Shield tunneling machine hydraulic propulsion system using proportional flow pressure compound control Download PDFInfo
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- CN1560482A CN1560482A CNA2004100169393A CN200410016939A CN1560482A CN 1560482 A CN1560482 A CN 1560482A CN A2004100169393 A CNA2004100169393 A CN A2004100169393A CN 200410016939 A CN200410016939 A CN 200410016939A CN 1560482 A CN1560482 A CN 1560482A
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 12
- 230000005641 tunneling Effects 0.000 title abstract 3
- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims description 16
- 238000009412 basement excavation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000009918 complex formation Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000011217 control strategy Methods 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 63
- 230000005540 biological transmission Effects 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
本发明公开了一种采用比例流量压力复合控制的盾构掘进机液压推进系统。它包括二位二通电磁球阀、比例调速阀、比例溢流阀、三位四通电磁换向阀、液压锁、平衡阀、压力传感器及带内置式位移传感器的液压油缸。推进系统中采用比例调速阀控制推进速度，采用比例溢流阀控制推进压力，通过合适的控制策略实现推进速度和推进压力的复合控制。本发明由于采用了比例流量压力复合控制技术，可实时控制盾构推进过程中的推进速度和推进压力，从而实现在施工过程中对土仓压力、地层稳定和地表沉降的控制。采用本发明的推进系统能够使盾构适应各种复杂的地层，实现精确的姿态和方向控制，系统节能效果好。适合于大功率、大流量、变负载的应用场合。
The invention discloses a shield tunneling machine hydraulic propulsion system adopting proportional flow pressure compound control. It includes two-position two-way electromagnetic ball valve, proportional speed regulating valve, proportional overflow valve, three-position four-way electromagnetic reversing valve, hydraulic lock, balance valve, pressure sensor and hydraulic cylinder with built-in displacement sensor. In the propulsion system, a proportional speed regulating valve is used to control the propulsion speed, a proportional relief valve is used to control the propulsion pressure, and a compound control of propulsion speed and propulsion pressure is realized through an appropriate control strategy. Because the present invention adopts the proportional flow pressure composite control technology, it can control the propulsion speed and propulsion pressure in the process of shield tunneling in real time, so as to realize the control of soil bunker pressure, formation stability and surface settlement during construction. Adopting the propulsion system of the invention can make the shield machine adapt to various complex formations, realize precise attitude and direction control, and have good energy-saving effect of the system. It is suitable for applications with high power, large flow and variable load.
Description
Affiliated technical field
The present invention relates to fluid pressure actuator, relate in particular to a kind of shield excavation machine hydraulic propelling system that adopts the compound control of ratio flow pressure.
Background technique
The shield structure is a kind of complete-section tunnel boring machine, and it can be finished excavation, is unearthed, work such as tunnel support under the shielding that can support circle that strata pressure can advance again or special shape steel tube structures such as rectangle and horse shoe shaped in the stratum.Its maximum characteristics be exactly whole tunnel excavating process all be under this is known as the shielding of steel structure of shield, to finish, thereby can avoid to greatest extent caving in and surface deformable.Compare with traditional tunnel piercing technology, safe and reliable, advantages such as mechanization degree is high, good work environment, earth volume is few, progress is fast, construction cost is low that shield construction has, especially in geological condition complexity, level of ground water height and edpth of tunnel when big can only rely on the shield structure.
The shield excavation machine propulsion system is being born the jacking task of whole shield machine tool, requirement can both accurately be controlled the attitude and the direction of shield structure under any loading condition in time, making the shield driving function accurately advance along the route that configures in advance, is one of critical system of shield excavation machine.Characteristics such as the transmission of power of shield structure and control system have that transmitted power is big, changing load, complicated movement, control accuracy and reliability requirement height, installing space is little and environment is abominable.The intrinsic characteristics of hydraulic transmission and control system exactly can satisfy this demand of shield structure.In recent years the electrichydraulic control that develops rapidly (system) technological synthesis utilized electronic technology in advantage aspect input, amplification, processing and the transmission and hydraulic pressure the advantage on power transfer is amplified and carried out, become shield structure transmission of power and the irreplaceable mode of control.
Modern shield structure control ground settlement and the fundamental sum effective method that reduces soil disturbance are to adopt pressure balance (mud-water balance and earth pressure balance) technology.Requirement is in time adjusted fltting speed and the amount of being unearthed according to the variation of working surface actual pressure, guarantees that working surface has proper supporting pressure.More elementary method is by preestablishing native storehouse internal pressure value to reach the purpose of good ground, adjusting according to the ground settlement situation in construction again, is that the soil pressure of a kind of " hysteresis formula " is corrected.Because the virtual stress more complicated of soil layer on the excavation face, this preestablish and the result that adjusts of lagging behind can make ground produce bigger protuberance or subsides, stratum effect stable and ground settlement control depends on workmen's experience to a great extent, and construction quality is difficult to guarantee.Therefore, how according to the working surface soil pressure or surface deformable is adjusted fltting speed in real time and the amount of being unearthed is the key technical problem that concern that the shield structure reliably tunnels.
It is the effective measures that the shield structure can be pushed ahead exactly along the route direction of design that coordination by oil hydraulic cylinder makes the shield structure keep suitable attitude.But in real process, because the effect of many unpredictable elements in the complexity of soil layer condition and the construction often makes the variation that attitude takes place in the shield structure drive-in step, the situation of shield structure off-design axis appears.When shield machine advances, rectifies a deviation, comes back the propelling or the drive-in step of kowtowing at curve in, actual excavated section is not circular but oval, cause unnecessary backbreaking to influence driving speed on the one hand, can aggravate soil disturbance on the other hand and increase surface deformable, this influence sharply increases with the increase of shield structure departure degree.Therefore how keeping correct attitude of shield structure and correction of deviation in time by the control oil hydraulic cylinder also is the key technical problem that guarantees the efficient driving of shield structure.
Summary of the invention
In order to overcome the problem that the shield excavation machine work progress exists in the background technique, the invention provides a kind of shield excavation machine hydraulic propelling system that adopts the compound control of ratio flow pressure, can guarantee that hydraulic system can realize the compound control of flow pressure under non-linear heavy load operating mode, and have higher sensitivity and precision.
The technical solution adopted for the present invention to solve the technical problems is to comprise: bi-bit bi-pass Solenoid ball valve, proportional velocity regulating valve, proportional pressure control valve, 3-position 4-way solenoid directional control valve, hydraulic lock, equilibrium valve, pressure transducer, with the hydraulic jack of built-in displacement transducer.The oil inlet P of bi-bit bi-pass Solenoid ball valve
1Oil inlet P with proportional velocity regulating valve
2Be communicated with the oil outlet T of bi-bit bi-pass Solenoid ball valve
1Respectively with the oil outlet T of proportional velocity regulating valve
2, proportional pressure control valve oil inlet P
3, the 3-position 4-way solenoid directional control valve oil inlet P
4Be communicated with the oil outlet T of proportional pressure control valve
3Oil return inlet T with the 3-position 4-way solenoid directional control valve
4Be communicated with connected tank, the filler opening A of hydraulic lock
2Oil outlet A with the 3-position 4-way solenoid directional control valve
1Be communicated with the filler opening B of hydraulic lock
2Oil outlet B with the 3-position 4-way solenoid directional control valve
1Be communicated with the filler opening F of equilibrium valve and the oil outlet A of hydraulic lock
3Be communicated with, the oil outlet V of equilibrium valve is communicated with pressure transducer with the rodless cavity of the hydraulic jack of built-in displacement transducer respectively, the control port S of equilibrium valve respectively with the oil outlet B of hydraulic lock
3Be communicated with rod chamber with the hydraulic jack of built-in displacement transducer.
The present invention compares with background technique, and the useful effect that has is:
1) the present invention adopts proportional velocity regulating valve and proportional pressure control valve to realize the compound control of flow pressure in each packet zone, can adjust the fltting speed and the propelling pressure of hydraulic jack in real time according to shield attitude and native storehouse pressure, and keep the coordination of hydraulic jack with synchronously.
2) adopt this system can control fltting speed and propelling pressure in the drive-in step exactly.And have higher sensitivity and a precision.
The present invention can make the shield structure adapt to the stratum of various complexity, realizes the control of accurate attitude and direction, and energy saving of system is effective.The application that is suitable for high-power, big flow, varying load.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is the shield excavation machine hydraulic propelling system schematic diagram of the compound control of employing ratio flow pressure.
Among the figure: 1. bi-bit bi-pass Solenoid ball valve, 2. proportional velocity regulating valve, 3. proportional pressure control valve, 4. 3-position 4-way solenoid directional control valve, 5. hydraulic lock, 6. equilibrium valve, 7. pressure transducer, 8. with the hydraulic jack of built-in displacement transducer, 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25 is pipeline.
Embodiment
Bi-bit bi-pass Solenoid ball valve 1 and proportional velocity regulating valve 2 are connected in parallel by pipeline 10,11,12,13 in the accompanying drawing, and bi-bit bi-pass Solenoid ball valve 1 one ends are connected with pipeline 12, and the other end is connected with pipeline 13; Proportional velocity regulating valve 2 one ends are connected with pipeline 10, and the other end is connected with pipeline 11; Proportional pressure control valve 3 one ends are connected with pipeline 16, and the other end is connected with pipeline 17; The oil inlet P of 3-position 4-way solenoid directional control valve 4
4Be connected oil return inlet T with pipeline 15
4Be connected the oil outlet A of 3-position 4-way solenoid directional control valve 4 with pipeline 18
1Be connected oil outlet B with pipeline 19
1Be connected with pipeline 20; Oil sump tank after pipeline 17 and pipeline 18 are connected in parallel; The filler opening A of hydraulic lock 5
2Be connected filler opening B with pipeline 19
2Be connected oil outlet A with pipeline 20
3Be connected oil outlet B with pipeline 21
3Be connected with pipeline 22; The filler opening F of equilibrium valve 6 is connected with pipeline 21, and oil outlet V is connected with pipeline 25, and a control mouthful S is connected with pipeline 23; The rodless cavity of hydraulic jack 8 is connected with pipeline 25, and the rod chamber of hydraulic jack 8 is connected with pipeline 24; Pressure transducer 7 is connected on the pipeline 25, near the rodless cavity of hydraulic jack 8.
The working principle of the shield excavation machine hydraulic propelling system of the compound control of employing ratio flow pressure is as follows:
When shield excavation machine advanced forward, the solenoid valve dead electricity of bi-bit bi-pass Solenoid ball valve 1 was closed bi-bit bi-pass Solenoid ball valve 1, and system pressure oil is 9,10 oil inlet P that enter proportional velocity regulating valve 2 by the road
2, from proportional velocity regulating valve 2 oil outlet T
2Flow out, enter pipeline 11, by the road the oil inlet P of 14,15 inflow 3-position 4-way solenoid directional control valves
4, 3-position 4-way solenoid directional control valve 4 is in a position, the oil inlet P in the 3-position 4-way solenoid directional control valve 4 at this moment
4With oil outlet A
1Be communicated with oil return inlet T
4With oil outlet B
1Be communicated with, pressure oil is through the oil outlet A of 3-position 4-way solenoid directional control valve 4
1Flow out, enter the filler opening A of hydraulic lock 5 by pipeline 19
2, from the oil outlet A of hydraulic lock 5
3Flow out, 21 filler opening F that flow into equilibrium valves 6 by the road, the bypass one-way valve from equilibrium valve 6 arrives oil outlet V, enters the rodless cavity of hydraulic jack 8 at last by pipeline 25, and the plunger rod that promotes hydraulic jack travels forward.When the plunger rod of hydraulic jack was pushed ahead, the hydraulic oil of hydraulic jack rod chamber 24,22 entered the oil outlet B of hydraulic lock 5 by the road
3, from the filler opening B of hydraulic lock 5
2Flow out, enter the oil outlet B of 3-position 4-way solenoid directional control valve 4 by pipeline 20
1, then from the oil return inlet T of 3-position 4-way solenoid directional control valve 4
4Flow out, 18 flow back to fuel tank by the road at last.
In the drive-in step, the big I of fltting speed detects forward displacement in real time by the built-in displacement transducer in the hydraulic jack 8, converts on the proportion electro-magnet that electrical signal feeds back to proportional velocity regulating valve 2, and the aperture of restriction realizes in the control ratio series flow control valve 2.Unnecessary flow can flow into the oil inlet P of proportional pressure control valve 3 by pipeline 11,16 in the system
3, from the oil outlet T of proportional pressure control valve 3
3Flow out, 17 flow back to fuel tank by the road.In order to keep the stability of the face that excavates, also must control propelling pressure in real time, can be detected the propelling pressure of hydraulic jack this moment by pressure transducer 7, convert on the proportion electro-magnet that electrical signal feeds back to proportional pressure control valve 3, the restriction size of control ratio relief valve 3 realizes, by proportional velocity regulating valve 2 and the compound control of proportional pressure control valve 3 composition flow pressures in the grouping, can control the fltting speed and the propelling pressure of advancing hydraulic pressure oil cylinder in real time.
The advancing hydraulic pressure oil cylinder return the independent retraction operation that control loop can be realized hydraulic jack fast, to satisfy the requirement of pipe sheet assembling.During rewind down, the solenoid valve of bi-bit bi-pass Solenoid ball valve 1 gets electric, the oil inlet P of bi-bit bi-pass Solenoid ball valve 1
1With oil outlet T
1Be communicated with, short circuit proportional velocity regulating valve 2, system adopts high flow rate oil supply, the oil inlet P that system pressure oil enters bi-bit bi-pass Solenoid ball valve 1 from pipeline 9,12
1, from the oil outlet T of bi-bit bi-pass Solenoid ball valve 1
1Flow out, 13,15 enter 3-position 4-way solenoid directional control valve oil inlet P by the road
4, 3-position 4-way solenoid directional control valve 4 switches to working state b position, the oil inlet P of 3-position 4-way solenoid directional control valve 4 at this moment
4With oil outlet B
1Be communicated with oil return inlet T
4With oil outlet A
1Be communicated with, pressure oil is the filler opening B of 20 inflow hydraulic lock 5 by the road
2, from the oil outlet B of hydraulic lock 5
3Flow out, flow into pipeline 22.This moment pressure oil content two-way, one road 23 control port S that flow into equilibrium valves 6 by the road, back down the pressure valve in the equilibrium valve 6, make the oil outlet V and the filler opening F of equilibrium valve 6 be communicated with, another road is 24 rod chambers that enter hydraulic jack 8 by the road, promote the quick rollback of plunger rod of hydraulic jack 8, the pressure oil of hydraulic jack 8 rodless cavities 25 oil outlet V that flow into equilibrium valves 6 by the road during rollback, flow out from the filler opening F of equilibrium valve 6, by the road the oil outlet A of 21 inflow hydraulic lock 5
3, from the filler opening A of hydraulic lock 5
2Flow out, enter the oil outlet A that pipeline 19 arrives 3-position 4-way solenoid directional control valve 4
1, then from the oil return inlet T of 3-position 4-way solenoid directional control valve 4
4Flow out, flow back to fuel tank by pipeline 18.
During pipe sheet assembling, be not that all hydraulic jack plunger rod all must rollback, the hydraulic jack plunger rod that has also must withstand the section of jurisdiction, this moment, corresponding 3-position 4-way solenoid directional control valve 4 dead electricity were in meta, form the locking loop with hydraulic lock 5, can well prevent the leakage of oil, guarantee that the piston rod of hydraulic jack withstands the section of jurisdiction, be beneficial to the assembly unit of other section of jurisdiction.Also be provided with an equilibrium valve 6 in the hydraulic propelling system control loop, when this equilibrium valve is return separately at pipe sheet assembling, hydraulic jack, can play motion and act on stably.
Claims (1)
1, a kind of shield excavation machine hydraulic propelling system that adopts the compound control of ratio flow pressure is characterized in that comprising: bi-bit bi-pass Solenoid ball valve (1), proportional velocity regulating valve (2), proportional pressure control valve (3), 3-position 4-way solenoid directional control valve (4), hydraulic lock (5), equilibrium valve (6), pressure transducer (7), with the hydraulic jack (8) of built-in displacement transducer; The oil inlet P of bi-bit bi-pass Solenoid ball valve (1)
1Oil inlet P with proportional velocity regulating valve (2)
2Be communicated with the oil outlet T of bi-bit bi-pass Solenoid ball valve (1)
1Respectively with the oil outlet T of proportional velocity regulating valve (2)
2, proportional pressure control valve (3) oil inlet P
3, 3-position 4-way solenoid directional control valve (4) oil inlet P
4Be communicated with the oil outlet T of proportional pressure control valve (3)
3Oil return inlet T with 3-position 4-way solenoid directional control valve (4)
4Be communicated with connected tank, the filler opening A of hydraulic lock (5)
2Oil outlet A with 3-position 4-way solenoid directional control valve (4)
1Be communicated with the filler opening B of hydraulic lock (5)
2Oil outlet B with 3-position 4-way solenoid directional control valve (4)
1Be communicated with the oil outlet A of the filler opening F of equilibrium valve (6) and hydraulic lock (5)
3Be communicated with, the oil outlet V of equilibrium valve (6) is communicated with pressure transducer (7) with the rodless cavity of the hydraulic jack (8) of built-in displacement transducer respectively, the control port S of equilibrium valve (6) respectively with the oil outlet B of hydraulic lock (5)
3Be communicated with rod chamber with the hydraulic jack (8) of built-in displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016939 CN1287094C (en) | 2004-03-12 | 2004-03-12 | Hydraulic propelling system for mining tunnel driving machine controlled by ratio flow pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016939 CN1287094C (en) | 2004-03-12 | 2004-03-12 | Hydraulic propelling system for mining tunnel driving machine controlled by ratio flow pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560482A true CN1560482A (en) | 2005-01-05 |
| CN1287094C CN1287094C (en) | 2006-11-29 |
Family
ID=34440727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410016939 Expired - Fee Related CN1287094C (en) | 2004-03-12 | 2004-03-12 | Hydraulic propelling system for mining tunnel driving machine controlled by ratio flow pressure |
Country Status (1)
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|---|---|
| CN (1) | CN1287094C (en) |
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| CN101864965A (en) * | 2010-05-17 | 2010-10-20 | 浙江大学 | Energy-saving shield tunneling propulsion system with compound synchronous control of pressure and flow |
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