CN110500100A - A kind of electrohydraulic control system promoting load automatic adjusument for shield machine - Google Patents
A kind of electrohydraulic control system promoting load automatic adjusument for shield machine Download PDFInfo
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- CN110500100A CN110500100A CN201910819686.XA CN201910819686A CN110500100A CN 110500100 A CN110500100 A CN 110500100A CN 201910819686 A CN201910819686 A CN 201910819686A CN 110500100 A CN110500100 A CN 110500100A
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- way electromagnetic
- electromagnetic directional
- directional valve
- hydraulic
- hydraulic pump
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- 230000001737 promoting effect Effects 0.000 title claims description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 56
- 239000002828 fuel tank Substances 0.000 claims description 12
- 239000010727 cylinder oil Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0621—Shield advancing devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of electrohydraulic control systems that load automatic adjusument is promoted for shield machine, including signal control assembly, oil circuit control assembly and load component, signal control assembly includes A/D conversion module, PLC control unit, D/A conversion module and signal amplifier；Oil circuit control assembly includes hydraulic pump, the main control motor for driving hydraulic pump, and the three-position four-way electromagnetic directional valve being connected with the oil outlet of hydraulic pump；Load component includes at least one set of hydraulic cylinder load unit, working connection flow sensor and the electrical connection corresponding with A/D conversion module respectively of Flow of Cylinder sensor, signal amplifier electrical connection corresponding with the control terminal of three-position four-way electromagnetic directional valve.The present invention realizes the self_adaptive adjusting of shield hydraulic propelling system, makes entire shield driving control system with more stationarity, and can be provided for the daily monitoring maintenance of system it is convenient, with strong operability and application technology effect outstanding.
Description
Technical field
The present invention relates to shield machine electrohydraulic control technology fields, and in particular to one kind promotes load adaptive for shield machine
The electrohydraulic control system of adjusting.
Background technique
21 century is the century of the tunnel underground space, and China is used as the world's largest tunnel and underground engineering construction market,
Market potential is discharging rapidly, and shield industry has a vast market foreground.Shield machine is as tunnel underground engineering construction
Sharp weapon have been widely used for China's urban subway tunnel, and diversion wears the Tunnel Engineering such as Jiang Yuehai for water tunnel.Shield driving electricity
For liquid control system as one of shield key core subsystem, the superiority and inferiority for controlling propulsive performance not only decides engineering progress
Whether efficiently, or even the success or failure of entire engineering are determined.
Existing shield mechanical electronic hydraulic propulsion control system controling parameter mostly uses open-loop design control, the control of fltting speed and
Adjustment usually relies on the micro-judgment of experienced operation driver, i.e., perceives shield indirectly by the stress of shield hydraulic cylinder
Operating condition when structure machine tunnels, but when shield machine is in some compound stratums, when as promoted in soft or hard uneven, upper-soft lower-hard ground, because
Sudden load change will cause the unexpected unstable of hydraulic cylinder propulsion, the mutation of system fltting speed, once these problems occur will
Lead to the deviation of entire shield attitude, it is desirable that shield machine is frequently rectified a deviation, and the change of engineering circuit is resulted even in when serious, can be made
It is lost at great engineering.On the other hand, show that existing shield hydraulic propelling system lacks by numerous shield engineering examples
The weary a whole set of parameter to the monitoring of system leak amount, leak detection more relies on manual inspection, because hydraulic fluid leak is found not in time
And maintenance down causes system failure, not only results in the very big wasting of resources and the serious influence constructing tunnel work of meeting in this way
Phase.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electro-hydraulic controls that load automatic adjusument is promoted for shield machine
System processed, on the one hand solve in the prior art shield driving electrohydraulic control system in progradation because extraneous loads change is led
The jiggly problem of the propulsion of cause avoids the problem that leading to shield attitude deviation because system fltting speed is mutated, on the other hand complete
It has been apt to the safe O&M monitoring problem of existing shield hydraulic system.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
Design a kind of electrohydraulic control system that load automatic adjusument is promoted for shield machine, including signal control assembly, oil circuit
Control assembly and load component,
The signal control assembly include the A/D conversion module for being corresponding in turn to electrical connection, PLC control unit, D/A conversion module and
Signal amplifier；
The oil circuit control assembly includes hydraulic pump, the main control motor for driving the hydraulic pump, and with the hydraulic pump
The three-position four-way electromagnetic directional valve that is connected of oil outlet, the oil inlet of the hydraulic pump is connected in fuel tank by filter；
The load component includes at least one set of hydraulic cylinder load unit, the propelling cylinder of the hydraulic cylinder load unit into
Hydraulic fluid port is connected with the oil outlet of the three-position four-way electromagnetic directional valve, close to the three-position four-way electromagnetic directional valve oil outlet
The oil circuit at place is equipped with working connection flow sensor；The propelling cylinder oil return opening of the hydraulic cylinder load unit is connected to three
The oil return opening of four-way electromagnetic reversing valve is being equipped with Flow of Cylinder on the oil circuit at the hydraulic cylinder load unit oil return opening
Sensor；
The working connection flow sensor and the electrical connection corresponding with the A/D conversion module respectively of Flow of Cylinder sensor, it is described
Signal amplifier electrical connection corresponding with the control terminal of three-position four-way electromagnetic directional valve；Each flow is believed by A/D conversion module
Number collect in PLC control unit in real time, PLC control unit issues control signal after operation, by D/A conversion module,
Signal amplifier transmits control signals to three-position four-way electromagnetic directional valve, controls the movement of three-position four-way electromagnetic directional valve.
Preferably, pressure gauge, inspection are successively arranged on the oil circuit between the hydraulic pump and three-position four-way electromagnetic directional valve
Repair valve and check valve.
Preferably, overflow valve is additionally provided between the hydraulic pump and pressure gauge；The overload oil return opening of the overflow valve connects
Pass to the fuel tank.
Preferably, the oil return opening of the three-position four-way electromagnetic directional valve is connected to the fuel tank；The hydraulic cylinder load
The propelling cylinder oil return opening of unit is connected to the fuel tank by the oil return opening of three-position four-way electromagnetic directional valve.
Preferably, the hydraulic pump is variable pump.
In the above-mentioned technical solutions, hydraulic pump is driven to execute system hydraulic operation, 3-position 4-way electromagnetism by main control motor
Reversal valve is connected to hydraulic cylinder load unit, is hydraulic cylinder fuel feeding therein；Working connection flow sensor monitors working connection
Hydraulic flow, that is, be supplied to the sum of the flow of each hydraulic cylinder oil inlet；Flow of Cylinder sensor monitors each hydraulic oil
The hydraulic flow of cylinder oil return opening reflux.The flow signal that working connection flow sensor and Flow of Cylinder sensor monitor passes through A/
After D conversion module carries out signal conversion, it is transferred to PLC control unit, PLC control unit carries out issuing control after processing and operation
Signal processed controls the movement of three-position four-way electromagnetic directional valve.It can be with by working connection flow sensor and Flow of Cylinder sensor
The variation for monitoring instantaneous flow in oil circuit, timely feedbacks when Traffic Anomaly to PLC control unit, PLC control unit is according to feelings
Condition reacts to execute corresponding movement.
The beneficial effects of the present invention are:
1. the hydraulic flow of working connection flow sensor and Flow of Cylinder sensor moment monitoring working connection and each hydraulic cylinder, stream
Amount signal is fed back to PLC control unit to carry out subsequent action judgement.When detecting hydraulic cylinder load unit flowed fluctuation
Greatly, when deviateing the permission flow value of system setting, illustrate that propulsion system is integrally unstable at this time or oil cylinder clamping stagnation is asynchronous, pass through
PLC control unit adjusts the opening degree of three-position four-way electromagnetic directional valve, the flow of control system import, until actual value is the same as setting
Fixed permission flow value is identical, and the control mode supplied by this flow can effectively avoid shield driving in the process because of load
Mutation caused by the unstable phenomenon of Solid rocket engine.
2.PLC control unit is compared working connection flow and the sum of the hydraulic flow of each hydraulic cylinder oil return opening,
When the deviation of the two is in leakage allowed band, do not do any executing movement.Otherwise work as deviation outside leakage allowed band,
Three signal of feedback control, control bit four-way electromagnetic reversing valve are provided by PLC control unit, D/A conversion module, signal amplifier
Opening be directly closed, halt system promote, close service valve carry out the detection of system leak point.It can effectively keep away by this way
Exempt to find system failure phenomenon caused by maintenance down not in time because of hydraulic fluid leak.
3. the detection and operation of the invention by each flow sensor signal of system judges that adaptive adjustment system supplies
Oil mass solves shield machine in progradation because promoting unstable phenomenon caused by extraneous loads change, and the system of realizing pushes away
Into the automatic adjusument of process.Compared by the feedback of working connection flow sensor and each hydraulic cylinder oil return opening flow sensor
Realize the real-time monitoring of Thrust Hydraulic System for Shield Tunneling Machine leakage rate；The present invention not only realizes the safe O&M of shield hydraulic system
Monitoring, and improve the stationarity and dynamic response characteristic of shield driving electrohydraulic control system.
Detailed description of the invention
Fig. 1 is the control principle drawing for the electrohydraulic control system that the present invention promotes load automatic adjusument for shield machine；
Figure label: 1 is A/D conversion module, and 2 be PLC control unit, and 3 be D/A conversion module, and 4 be signal amplifier, and 5 be oil
Case, 6 be filter, and 7 be main control motor, and 8 be hydraulic pump, and 9 be overflow valve, and 10 be pressure gauge, and 11 be service valve, unidirectional based on 12
Valve, 13 be three-position four-way electromagnetic directional valve, and 14 be working connection flow sensor, and 15,17,18,19 be Flow of Cylinder sensor, 16
It is hydraulic cylinder load unit for propelling cylinder, 201,202,203,204；
A is the oil outlet of hydraulic pump, and T1 is three-position four-way electromagnetic directional valve oil inlet, and T2 is three-position four-way electromagnetic directional valve oil return
Mouthful, T is working connection flow, and P1, P2, P3, P4 are respectively the oil return opening flow of each propelling cylinder.
Specific embodiment
Illustrate a specific embodiment of the invention below with reference to embodiment, but following embodiment is used only to be described in detail
The present invention does not limit the scope of the invention in any way.Related equipment component is as without especially in the examples below
Illustrate, is conventional equipment element；The related raw material of industry is commercially available regular industrial raw material unless otherwise instructed.
Embodiment 1: a kind of electrohydraulic control system promoting load automatic adjusument for shield machine, referring to Fig. 1, including letter
Number control assembly, oil circuit control assembly and load component.Signal control assembly includes the A/D conversion module for being corresponding in turn to electrical connection
1, PLC control unit 2, D/A conversion module 3 and signal amplifier 4.
Oil circuit control assembly includes hydraulic pump 8, the main control motor 7 for driving hydraulic pump 8, and is gone out with hydraulic pump 8
The oil inlet of the three-position four-way electromagnetic directional valve 13 that hydraulic fluid port is connected, hydraulic pump 8 is connected in fuel tank 5 by filter 6；It is hydraulic
Pump 8 is variable pump.
Load component includes at least one set of hydraulic cylinder load unit, and hydraulic cylinder load unit is four in the present embodiment
Group.Hydraulic cylinder load unit includes propelling cylinder 16, oil inlet and the three-position four-way electromagnetic directional valve 13 of propelling cylinder 16
Oil outlet is connected, and working connection flow sensor is equipped on the oil circuit close to 13 oil outlet of three-position four-way electromagnetic directional valve
14；The oil return opening of propelling cylinder 16 is connected to the oil return opening of three-position four-way electromagnetic directional valve 13, single close to hydraulic cylinder load
Oil circuit at first oil return opening is equipped with Flow of Cylinder sensor；Oil between hydraulic pump 8 and three-position four-way electromagnetic directional valve 13
Road is successively arranged pressure gauge 10, service valve 11 and check valve 12.Overflow valve 9 is additionally provided between hydraulic pump 8 and pressure gauge 10；
The overload oil return opening of overflow valve is connected to fuel tank 5.The oil return opening of three-position four-way electromagnetic directional valve 13 is connected to fuel tank 5；Promote oil
The oil of 16 oil return opening of cylinder outflow flows to fuel tank 5 by the oil return opening of three-position four-way electromagnetic directional valve 13.
Electrical connection corresponding with A/D conversion module 1, signal are put respectively for working connection flow sensor 14 and Flow of Cylinder sensor
The big electrical connection corresponding with the control terminal of three-position four-way electromagnetic directional valve 13 of device 4；By A/D conversion module 1 by each flow signal
Collect in PLC control unit 2 in real time, PLC control unit 2 issued after operation control signal, by D/A conversion module 3,
Signal amplifier 4 transmits control signals to three-position four-way electromagnetic directional valve 13, and control three-position four-way electromagnetic directional valve 13 is moved
Make.
Wherein, the flow of pressurized of working connection flow sensor and the monitoring of Flow of Cylinder sensor moment working connection and each oil cylinder
Amount, feeds back to PLC control unit for signal to carry out subsequent action judgement.PLC control unit is to working connection flow T and each liquid
The sum of hydraulic flow P1, P2, P3, P4 of compressing cylinder oil return opening are compared, when the two deviation leakage allowed band in,
It does not do and any executes movement.When deviation is outside leakage allowed band, pass through PLC control unit, D/A conversion module, signal
Amplifier provides feedback control signal, and the opening for controlling three-position four-way electromagnetic directional valve is directly closed, and halt system promotes, and closes
Service valve carries out the detection of system leak point.It can effectively avoid finding maintenance down not in time because of hydraulic fluid leak by this way
Caused by system failure phenomenon.
When the value fluctuation of flow P1, P2, P3, P4 of each hydraulic cylinder load unit are larger, deviation system setting is permitted
Perhaps when flow value, illustrate that propulsion system is integrally unstable at this time or oil cylinder clamping stagnation is asynchronous, feedback arrives PLC control unit, issues
Control instruction, the adaptive control voltage adjusted in three-position four-way electromagnetic directional valve, adaptively increases according to feedback signal and adds deduct
The valve core opening degree of small three-position four-way electromagnetic directional valve makes the throttling action of valve group enhance or weaken, until the actual value of feedback
With allowing flow value identical, the control mode supplied by this flow can effectively avoid shield driving in the process because of load
It is mutated and leads to the unstable phenomenon of hydraulic cylinder load unit.
The present invention realizes the self_adaptive adjusting of shield hydraulic propelling system, makes entire shield driving control system more
It with stationarity, and can be provided for system daily monitoring maintenance convenient, there is strong operability and application technology effect outstanding.
The present invention is described in detail above in conjunction with embodiment, but person of ordinary skill in the field can manage
Solution, without departing from the purpose of the present invention, can also change each design parameter in above-described embodiment, be formed
Multiple specific embodiments are common variation range of the invention, are no longer described in detail one by one herein.
Claims (5)
1. a kind of electrohydraulic control system for promoting load automatic adjusument for shield machine, which is characterized in that controlled including signal
Component, oil circuit control assembly and load component,
The signal control assembly includes the A/D conversion module (1) for being corresponding in turn to electrical connection, PLC control unit (2), D/A conversion
Module (3) and signal amplifier (4)；
The oil circuit control assembly includes hydraulic pump (8), the main control motor (7) for driving the hydraulic pump (8), and with institute
The three-position four-way electromagnetic directional valve (13) that the oil outlet of hydraulic pump (8) is connected is stated, the oil inlet of the hydraulic pump (8) passed through
Filter (6) is connected in fuel tank (5)；
The load component includes at least one set of hydraulic cylinder load unit, the propelling cylinder of the hydraulic cylinder load unit into
Hydraulic fluid port is connected with the oil outlet of the three-position four-way electromagnetic directional valve (13), close to the three-position four-way electromagnetic directional valve
(13) oil circuit of oil outlet is equipped with working connection flow sensor (14)；The propelling cylinder of the hydraulic cylinder load unit returns
Hydraulic fluid port is connected to the oil return opening of three-position four-way electromagnetic directional valve (13), at the hydraulic cylinder load unit oil return opening
Oil circuit is equipped with Flow of Cylinder sensor；
The working connection flow sensor (14) and Flow of Cylinder sensor is corresponding with A/D conversion module (1) respectively is electrically connected
It connects, signal amplifier (4) electrical connection corresponding with the control terminal of three-position four-way electromagnetic directional valve (13)；Pass through A/D modulus of conversion
Block (1) collects each flow signal in PLC control unit (2) in real time, and PLC control unit (2) issues control after operation
Signal processed transmits control signals to three-position four-way electromagnetic directional valve by D/A conversion module (3), signal amplifier (4)
(13), the movement of three-position four-way electromagnetic directional valve (13) is controlled.
2. the electrohydraulic control system according to claim 1 for promoting load automatic adjusument for shield machine, feature exist
In, be successively arranged on the oil circuit between the hydraulic pump (8) and three-position four-way electromagnetic directional valve (13) pressure gauge (10), maintenance
Valve (11) and check valve (12).
3. the electrohydraulic control system according to claim 2 for promoting load automatic adjusument for shield machine, feature exist
In being additionally provided with overflow valve (9) between the hydraulic pump (8) and pressure gauge (10)；The overload oil return opening of the overflow valve is connected to
To the fuel tank (5).
4. the electrohydraulic control system according to claim 1 for promoting load automatic adjusument for shield machine, feature exist
In the oil return opening of the three-position four-way electromagnetic directional valve (13) is connected to the fuel tank (5)；The hydraulic cylinder load unit
Propelling cylinder oil return opening is connected to the fuel tank (5) by the oil return opening of three-position four-way electromagnetic directional valve (13).
5. the electrohydraulic control system according to claim 1 for promoting load automatic adjusument for shield machine, feature exist
In the hydraulic pump (8) is variable pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819686.XA CN110500100B (en) | 2019-08-31 | 2019-08-31 | Electro-hydraulic control system for self-adaptive adjustment of propelling load of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819686.XA CN110500100B (en) | 2019-08-31 | 2019-08-31 | Electro-hydraulic control system for self-adaptive adjustment of propelling load of shield tunneling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110500100A true CN110500100A (en) | 2019-11-26 |
| CN110500100B CN110500100B (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910819686.XA Active CN110500100B (en) | 2019-08-31 | 2019-08-31 | Electro-hydraulic control system for self-adaptive adjustment of propelling load of shield tunneling machine |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594191A (en) * | 2020-05-25 | 2020-08-28 | 中铁隧道局集团有限公司 | Multi-mode fusion intelligent control device for earth pressure balance shield compressed air system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587644A (en) * | 2004-07-09 | 2005-03-02 | 浙江大学 | Full power self adaptive shield cutter disc driving electrohydraulic control system |
| CN201679504U (en) * | 2010-05-17 | 2010-12-22 | 浙江大学 | Energy-saving type shield propulsion system compositely and synchronously controlling pressure and flow |
| CN203050723U (en) * | 2012-12-21 | 2013-07-10 | 浙江大学 | Variable frequency driving shield thrust hydraulic system |
| CN206206323U (en) * | 2016-11-04 | 2017-05-31 | 燕山大学 | Hydraulic pump motor reliability TT＆C system |
| CN108331589A (en) * | 2017-12-21 | 2018-07-27 | 北方重工装备（沈阳）有限公司 | A kind of shield machine propulsion energy-saving control system |
-
2019
- 2019-08-31 CN CN201910819686.XA patent/CN110500100B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587644A (en) * | 2004-07-09 | 2005-03-02 | 浙江大学 | Full power self adaptive shield cutter disc driving electrohydraulic control system |
| CN201679504U (en) * | 2010-05-17 | 2010-12-22 | 浙江大学 | Energy-saving type shield propulsion system compositely and synchronously controlling pressure and flow |
| CN203050723U (en) * | 2012-12-21 | 2013-07-10 | 浙江大学 | Variable frequency driving shield thrust hydraulic system |
| CN206206323U (en) * | 2016-11-04 | 2017-05-31 | 燕山大学 | Hydraulic pump motor reliability TT＆C system |
| CN108331589A (en) * | 2017-12-21 | 2018-07-27 | 北方重工装备（沈阳）有限公司 | A kind of shield machine propulsion energy-saving control system |
Non-Patent Citations (1)
| Title |
|---|
| 陈馈: "盾构电液控制系统实验平台液压系统设计与研究", 《液压气动与密封》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594191A (en) * | 2020-05-25 | 2020-08-28 | 中铁隧道局集团有限公司 | Multi-mode fusion intelligent control device for earth pressure balance shield compressed air system |
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| Publication number | Publication date |
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| CN110500100B (en) | 2020-11-17 |
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