CN112832789A - Valve control method and system for shield tunneling machine push-splicing synchronous propulsion system - Google Patents
Valve control method and system for shield tunneling machine push-splicing synchronous propulsion system Download PDFInfo
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- CN112832789A CN112832789A CN202110256339.8A CN202110256339A CN112832789A CN 112832789 A CN112832789 A CN 112832789A CN 202110256339 A CN202110256339 A CN 202110256339A CN 112832789 A CN112832789 A CN 112832789A
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- 230000005641 tunneling Effects 0.000 title claims abstract description 57
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012545 processing Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 21
- 239000003921 oil Substances 0.000 description 85
- 230000001276 controlling effect Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000007619 statistical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
- E21D9/0609—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering with means for applying a continuous liner, e.g. sheets of plastics, between the main concrete lining and the rock
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention relates to a valve control method and a system for a shield machine push-splicing synchronous propulsion system, wherein a plurality of propulsion oil cylinders are arranged on a shield machine, and the valve control method comprises the following steps: providing a control valve, and configuring a corresponding control valve for each propulsion oil cylinder; providing a hydraulic pump, connecting the hydraulic pump with a control valve arranged at each propulsion oil cylinder through a pipeline respectively, and providing power for each propulsion oil cylinder through the hydraulic pump; when the shield machine is in a push-splicing synchronous state, acquiring a push instruction output by a push system, wherein the acquired push instruction comprises the number information of a push oil cylinder and a corresponding pressure target value; and adjusting the control valve at the propulsion oil cylinder according to the pressure target value in the propulsion instruction, thereby realizing the adjustment of the propulsion pressure at each propulsion oil cylinder. According to the invention, the independent control valves are configured for the propulsion oil cylinders, the propulsion pressure of the shield tunneling machine can be controlled by controlling each control valve, and the propulsion pressure of each propulsion oil cylinder can be independently controlled, so that the construction requirement of synchronous push splicing can be met.
Description
Technical Field
The invention relates to the field of shield construction engineering, in particular to a valve control method and a valve control system for a shield machine push-splicing synchronous propulsion system.
Background
In the process of modern urban construction, shield construction gradually occupies the leading position in the construction field due to the advantages of high mechanization degree, safe working environment, low labor intensity of workers, high construction speed, small influence on ground structure and surroundings, capability of keeping underground water level and the like. With the expansion of tunnel construction towards large diameter, long distance and multiple functions, the shield machine is optimized and upgraded at the core of low cost, high construction efficiency, long service life and process safety.
In order to improve the construction efficiency, the synchronous push-splicing technology is introduced into the design of a new shield as a novel technology. The synchronous pushing and assembling construction method is characterized in that the segments are assembled while the shield main machine is pushed, and the two construction processes are overlapped to achieve the effect of improving the construction efficiency.
The shield tunneling machine using the synchronous push-splicing technology can be roughly divided into a single-propelling system type and a double-propelling system type. For the shield with the super-large diameter, the single propulsion system structure has better cost advantage and size advantage. The shield machine with the single propulsion system structure is expected to realize synchronous pushing and splicing construction, and compared with the traditional shield machine, the shield machine with the single propulsion system structure is required to have the following capabilities: the full oil cylinder propulsion mode is changed into the block-lacking oil cylinder propulsion mode, and the oil cylinder which does not participate in propulsion can be freely stretched; in any propulsion mode and mode conversion process, the working state of the shield host is basically unchanged, the propulsion attitude is maintained in a reference interval, and the propulsion speed is stabilized in a design range.
The existing shield machine is provided with independent power sources for each propulsion oil cylinder, and the control of the corresponding propulsion oil cylinder is realized by controlling each power source, so that synchronous pushing and splicing can be realized, but the number of the power sources is large, the structural design is complex, and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a valve control method and a valve control system for a shield tunneling machine push-splicing synchronous propulsion system, and solves the problem that the composition of a propulsion oil cylinder in each pressure zone of the conventional shield tunneling machine cannot be flexibly changed.
The technical scheme for realizing the purpose is as follows:
the invention provides a valve control method of a shield tunneling machine push-splicing synchronous propulsion system, wherein a plurality of propulsion oil cylinders are arranged on a shield tunneling machine, and the valve control method comprises the following steps:
providing a control valve, and configuring a corresponding control valve for each propulsion oil cylinder;
providing a hydraulic pump, connecting the hydraulic pump with control valves arranged at the positions of the propulsion oil cylinders through pipelines respectively, and providing power for the propulsion oil cylinders through the hydraulic pump;
when the shield machine is in a push-splicing synchronous state, acquiring a propulsion instruction output by a propulsion system, wherein the acquired propulsion instruction comprises the number information of a propulsion oil cylinder and a pressure target value corresponding to the propulsion oil cylinder; and
and adjusting the control valve at the propulsion oil cylinder according to the pressure target value in the propulsion instruction, thereby realizing the adjustment of the propulsion pressure at each propulsion oil cylinder.
According to the invention, the independent control valves are configured for the propulsion oil cylinders, the propulsion pressure of the shield tunneling machine can be controlled by controlling each control valve, and the propulsion pressure of each propulsion oil cylinder can be independently controlled, so that the construction requirement of synchronous push splicing can be met. The valve control method only needs to arrange one hydraulic pump, has simple structural design and convenient installation, and the control valve has low price and low cost.
The valve control method of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the method further comprises the following steps:
and acquiring pressure data corresponding to the pressure of each propulsion oil cylinder in real time and displaying the pressure data.
The valve control method of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the method further comprises the following steps:
and acquiring the speed of each propulsion oil cylinder in real time to form speed data correspondingly and displaying the speed data.
The valve control method of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the control valve is a proportional pressure reducing valve or a proportional overflow valve.
The valve control method of the shield tunneling machine push-splicing synchronous propelling system is further improved in that when the shield tunneling machine is in the push-splicing synchronous state, the propelling system calculates the propelling pressure of the rest propelling oil cylinders according to the propelling oil cylinders needing to be retracted, and then calculates the corresponding pressure target value by utilizing the propelling pressure and forms the corresponding propelling instruction.
The invention also provides a valve control system of the shield tunneling machine push-splicing synchronous propulsion system, wherein a plurality of propulsion oil cylinders are arranged on the shield tunneling machine, and the valve control system comprises:
a control valve disposed at each of the thrust cylinders;
the hydraulic pump is connected with the control valve at each propulsion oil cylinder and provides power for each propulsion oil cylinder through the hydraulic pump;
the processing unit is in communication connection with each control valve and the propulsion system and is used for acquiring a propulsion instruction output by the propulsion system when the shield tunneling machine is in a push-splicing synchronous state, and the acquired propulsion instruction comprises the number information of a propulsion oil cylinder and a pressure target value corresponding to the propulsion oil cylinder; the processing unit is also used for adjusting the control valve at the propulsion oil cylinder according to the pressure target value in the propulsion instruction, so that the propulsion pressure at each propulsion oil cylinder is adjusted.
The valve control system of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the valve control system further comprises a pressure sensor arranged on the propulsion oil cylinder and used for acquiring pressure data formed by the pressure of the propulsion oil cylinder in real time;
the pressure sensor is in communication connection with the processing unit, and the processing unit receives and displays pressure data sent by the pressure sensor.
The valve control system of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the valve control system further comprises a speed sensor arranged on the propulsion oil cylinder and used for acquiring speed data formed by the speed of the propulsion oil cylinder in a corresponding manner in real time;
the speed sensor is in communication connection with the processing unit, and the processing unit receives and displays speed data sent by the speed sensor.
The valve control system of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the control valve is a proportional pressure reducing valve or a proportional overflow valve.
The valve control system of the shield tunneling machine push-splicing synchronous propelling system is further improved in that when the shield tunneling machine is in the push-splicing synchronous state, the propelling system is used for calculating the propelling pressure of the rest propelling oil cylinders according to the propelling oil cylinders needing to be retracted, and further calculating the corresponding pressure target value by utilizing the propelling pressure and forming the corresponding propelling instruction.
Drawings
Fig. 1 is a system diagram of a valve control system of a shield tunneling machine push-splicing synchronous propulsion system.
FIG. 2 is a flow chart of a valve control method of the shield tunneling machine push-splicing synchronous propulsion system.
Fig. 3 is a schematic structural diagram of a shield tunneling machine and a thrust cylinder applied to the valve control method and system of the shield tunneling machine push-splicing synchronous thrust system of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides a valve control method and a valve control system for a shield tunneling machine push-splicing synchronous propulsion system, which are used for solving the problem that the composition of a propulsion oil cylinder in each pressure zone of the existing shield tunneling machine cannot be flexibly changed. The valve control method and the system can simplify the connection circuit structurally by arranging the hydraulic pump and the plurality of control valves, so that the structural connection is simple and convenient to operate, and the cost can be reduced. Due to the design of the control valve and the hydraulic pump, the propulsion oil cylinder can independently control the pressure, so that the pressure controllability and the variation capacity are enhanced, and the synchronous pushing and splicing construction requirements can be met. The valve control method and system of the shield tunneling machine push-splicing synchronous propulsion system are described below with reference to the accompanying drawings.
Referring to fig. 1, a system diagram of a valve control system of the shield tunneling machine push-splicing synchronous propulsion system is shown. The valve control system of the shield tunneling machine push-splicing synchronous propulsion system is described below with reference to fig. 1.
As shown in fig. 1, the valve control system of the shield tunneling machine push-splicing synchronous propulsion system of the present invention is used for regulating and controlling the propulsion pressure of the propulsion oil cylinders, and as shown in fig. 3, a plurality of propulsion oil cylinders 11 are provided on a shield tunneling machine 10, and the plurality of propulsion oil cylinders 11 are circumferentially arranged at intervals at the shield tail of the shield tunneling machine 10. The pump control system is not only suitable for freely controlling the thrust oil cylinder of the circular shield machine, but also suitable for controlling the thrust oil cylinders of shield machines with other shapes, such as a quasi-rectangular shield machine.
The valve control system comprises a plurality of control valves 21, a hydraulic pump 22 and a processing unit 23, wherein the control valves 21 are arranged at each propulsion oil cylinder 11, the control valves 21 are correspondingly connected with the propulsion oil cylinders 11 one by one, and the number of the control valves 21 is consistent with that of the propulsion oil cylinders 11; the hydraulic pump 22 is one, the hydraulic pump 22 is connected with the control valve 21 at each propulsion cylinder 11, and the power is supplied to each propulsion cylinder through the hydraulic pump 22, and the output pressure of the hydraulic pump 22 is preferably constant. The processing unit 23 is in communication connection with each control valve 21 and the propulsion system, and the processing unit 23 is configured to acquire a propulsion instruction output by the propulsion system when the shield tunneling machine 10 is in a push-splicing synchronization state, where the acquired propulsion instruction includes number information of the propulsion cylinder 11 and a pressure target value matched with the propulsion cylinder 11; the processing unit 23 is further adapted to adjust the control valves at the propulsion cylinders 11 in accordance with the pressure target values in the propulsion commands, thereby enabling adjustment of the propulsion pressure at each propulsion cylinder 11.
The valve control system of the invention realizes the pressure control of the propulsion oil cylinders by arranging the independent control valve for each propulsion oil cylinder and controlling the pressure of the propulsion oil cylinders by the control valve, thereby realizing the independent control of the pressure of the propulsion oil cylinders, further realizing the free change of the partition quantity and the mode of each propulsion oil cylinder when the shield machine is pushed and spliced synchronously, enhancing the controllability and the change capability of the pressure of the propulsion oil cylinders and meeting the construction requirement of synchronous pushing and splicing.
The pushing and splicing synchronization of the shield tunneling machine means that the shield tunneling machine carries out splicing of rear duct pieces while being pushed, in order to facilitate splicing of the duct pieces, part of the pushing oil cylinders need to be retracted to form a splicing space, and the rest of the pushing oil cylinders continue to be pushed so that the shield tunneling machine can keep being pushed forwards. Because the position of the retraction oil cylinder is determined corresponding to the assembly area, the pushing pressure in the pushing and assembling synchronous mode of each pushing oil cylinder is not fixed and is continuously changed, and therefore, each pushing oil cylinder is provided with one control valve, so that the controllability of the pushing oil cylinder is improved.
In an embodiment of the present invention, the valve control system of the present invention further includes pressure sensors 24 installed on the propulsion cylinders 11, the pressure sensors 24 are used for forming pressure data in real time according to the pressure of the propulsion cylinders 11, one pressure sensor 24 is installed at each propulsion cylinder 11, each pressure sensor 24 is in communication connection with the processing unit 23, and the processing unit 23 receives the pressure data sent by each pressure sensor 24 and displays the pressure data. The processing unit 23 displays the received pressure data in real time, so that real-time feedback of the pump control system is realized, operators can check the pressure condition of each propulsion oil cylinder in real time conveniently, and the actual construction condition can be known visually and timely.
Preferably, the processing unit 23 is further configured to store the received pressure data for subsequent statistical analysis of the pressure data.
In a specific embodiment of the present invention, the valve control system of the present invention further includes a speed sensor installed on the propulsion cylinder 11, the speed sensor is used for acquiring the speed of the propulsion cylinder 11 in real time to form speed data, one speed sensor is installed at each propulsion cylinder 11, each speed sensor is connected to the processing unit 23, and the processing unit 23 receives the speed data sent by each speed sensor and displays the speed data. The processing unit 23 displays the received speed data in real time, so that real-time feedback of the pump control system is realized, operators can conveniently check the speed condition of each propulsion oil cylinder, and the actual construction condition can be intuitively and timely known.
Preferably, the processing unit 23 is further configured to store the received speed data for subsequent statistical analysis of the speed data.
The valve control system realizes the real-time acquisition and display of the speed and the pressure of each propulsion oil cylinder, and forms effective and timely positive feedback.
In one embodiment of the present invention, the control valve 21 is a proportional pressure reducing valve or a proportional pressure relief valve.
The processing unit 23 controls the opening degree of the proportional pressure reducing valve through an electric signal, so that the pressure of the hydraulic oil passing through the proportional pressure reducing valve is consistent with a pressure target value required by the propulsion oil cylinder, and the propulsion pressure of the propulsion oil cylinder is adjusted. Preferably, a relation comparison table between the hydraulic oil pressure and the signal intensity is stored in the valve control system, the processing unit 23 receives the propulsion instruction, searches for the corresponding signal intensity by using a pressure target value in the propulsion instruction to form an electric signal and send the electric signal to the control valve 21, and the opening degree of the control valve is adjusted by the intensity of the electric signal, so that the pressure of the hydraulic oil flowing out from the control valve is adjusted, and the propulsion pressure of the propulsion oil cylinder is adjusted.
In a specific embodiment of the invention, when the shield tunneling machine is in a pushing and splicing synchronization state, the propulsion system is used for calculating the propulsion pressures of the other propulsion cylinders according to the propulsion cylinders needing to be retracted, and further calculating the corresponding pressure target values by using the propulsion pressures and forming corresponding propulsion instructions.
Specifically, the propulsion system numbers the propulsion cylinders, that is, a corresponding number is set for each propulsion cylinder to form number information, the number information of each propulsion cylinder is unique, and the propulsion cylinders can be identified by using the number information. After the assembling area of the duct piece is determined, the number information of the propulsion oil cylinders corresponding to the assembling area can be obtained by the propulsion system through the assembling area of the duct piece, and at the moment, the propulsion oil cylinders need to be in a retraction state so as to leave the space for assembling the duct piece. The propulsion system is based on the retracted propulsion oil cylinders, the rest propulsion oil cylinders are partitioned, then target thrust of each area is calculated according to the total thrust of the shield tunneling construction and is used as propulsion pressure, a pressure target value required by the corresponding propulsion oil cylinder is obtained through calculation of the propulsion pressure, the number information of the propulsion oil cylinders in each area is associated with the pressure target value to form a propulsion instruction, and the propulsion instruction is sent to a processing unit of the valve control system.
In a preferred embodiment, the propulsion system can obtain the propulsion pressure of each jack by using a calculation method disclosed in the method for calculating the jacking force distribution of the shield propulsion system in the invention creation name of patent application No. 202010720677.8 under the push-splicing synchronization mode.
The valve control system controls the opening of the control valve at each propulsion oil cylinder through the output signal of the processing unit, thereby controlling the propulsion pressure of the propulsion oil cylinder, controlling the upper limit value of the total propulsion pressure, and acquiring and displaying the speed and the pressure of each propulsion oil cylinder in real time, thereby realizing the independent control of each propulsion oil cylinder, increasing the controllability of the propulsion pressure, enabling the number and the mode of pressure partitions of the propulsion oil cylinders to be freely changed, and meeting the construction requirement of synchronous splicing.
The invention also provides a valve control method of the shield tunneling machine push-splicing synchronous propulsion system, which is explained below.
As shown in fig. 2, the valve control method of the present invention is used for controlling the thrust pressure of a shield tunneling machine, the shield tunneling machine is provided with a plurality of thrust cylinders, and the valve control method of the present invention comprises the following steps:
executing step S101, providing a control valve, and configuring a corresponding control valve for each propulsion oil cylinder; then, step S102 is executed;
step S102 is executed, a hydraulic pump is provided, the hydraulic pump is respectively connected with a control valve arranged at each propulsion oil cylinder through a pipeline, and power is provided for each propulsion oil cylinder through the hydraulic pump; then, step S103 is executed;
step S103 is executed, when the shield tunneling machine is in a pushing and splicing synchronization state, a pushing instruction output by a pushing system is obtained, and the obtained pushing instruction comprises the number information of a pushing oil cylinder and a pressure target value corresponding to the pushing oil cylinder; then, step S104 is executed;
step S104 is executed, and the control valve at the propulsion oil cylinder is adjusted according to the pressure target value in the propulsion instruction, so that the propulsion pressure at each propulsion oil cylinder is adjusted.
According to the invention, the independent control valves are configured for the propulsion oil cylinders, the propulsion pressure of the shield tunneling machine can be controlled by controlling each control valve, and the propulsion pressure of each propulsion oil cylinder can be independently controlled, so that the construction requirement of synchronous push splicing can be met. The valve control method only needs to arrange one hydraulic pump, has simple structural design and convenient installation, and the control valve has low price and low cost.
In one embodiment of the present invention, the valve control method of the present invention further comprises:
and acquiring pressure data corresponding to the pressure of each propulsion oil cylinder in real time and displaying the pressure data. And when pressure of each propulsion oil cylinder is collected in real time to form pressure data, the pressure data is stored.
In one embodiment of the present invention, the valve control method of the present invention further comprises:
and acquiring the speed of each propulsion oil cylinder in real time to form speed data correspondingly and displaying the speed data. And when the speed of each propulsion oil cylinder is collected in real time to form speed data, the speed data is also stored.
In one embodiment of the invention, the control valve is a proportional pressure reducing valve or a proportional pressure relief valve.
In a specific embodiment of the invention, when the shield tunneling machine is in a pushing and splicing synchronization state, the propulsion system calculates the propulsion pressures of the rest of the propulsion cylinders according to the propulsion cylinders needing to be retracted, and further calculates the corresponding pressure target values by using the propulsion pressures and forms corresponding propulsion instructions.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A valve control method of a shield machine push-splicing synchronous propulsion system is characterized in that the valve control method comprises the following steps:
providing a control valve, and configuring a corresponding control valve for each propulsion oil cylinder;
providing a hydraulic pump, connecting the hydraulic pump with control valves arranged at the positions of the propulsion oil cylinders through pipelines respectively, and providing power for the propulsion oil cylinders through the hydraulic pump;
when the shield machine is in a push-splicing synchronous state, acquiring a propulsion instruction output by a propulsion system, wherein the acquired propulsion instruction comprises the number information of a propulsion oil cylinder and a pressure target value corresponding to the propulsion oil cylinder; and
and adjusting the control valve at the propulsion oil cylinder according to the pressure target value in the propulsion instruction, thereby realizing the adjustment of the propulsion pressure at each propulsion oil cylinder.
2. The valve control method of the shield tunneling machine push-splicing synchronous propulsion system according to claim 1, further comprising:
and acquiring pressure data corresponding to the pressure of each propulsion oil cylinder in real time and displaying the pressure data.
3. The valve control method of the shield tunneling machine push-splicing synchronous propulsion system according to claim 1, further comprising:
and acquiring the speed of each propulsion oil cylinder in real time to form speed data correspondingly and displaying the speed data.
4. The valve control method of the shield tunneling machine push-fit synchronous propulsion system according to claim 1, wherein the control valve is a proportional pressure reducing valve or a proportional overflow valve.
5. The valve control method of the shield tunneling machine push-splicing synchronous propulsion system according to claim 1, wherein when the shield tunneling machine is in the push-splicing synchronous state, the propulsion system calculates the propulsion pressures of the remaining propulsion cylinders according to the propulsion cylinders to be retracted, and further calculates the corresponding pressure target values by using the propulsion pressures and forms the corresponding propulsion commands.
6. The utility model provides a shield constructs quick-witted pushes away valve accuse system of piecing together synchronous advancing system, be equipped with a plurality of propulsion cylinders on the shield constructs quick-witted, its characterized in that, valve accuse system includes:
a control valve disposed at each of the thrust cylinders;
the hydraulic pump is connected with the control valve at each propulsion oil cylinder and provides power for each propulsion oil cylinder through the hydraulic pump;
the processing unit is in communication connection with each control valve and the propulsion system and is used for acquiring a propulsion instruction output by the propulsion system when the shield tunneling machine is in a push-splicing synchronous state, and the acquired propulsion instruction comprises the number information of a propulsion oil cylinder and a pressure target value corresponding to the propulsion oil cylinder; the processing unit is also used for adjusting the control valve at the propulsion oil cylinder according to the pressure target value in the propulsion instruction, so that the propulsion pressure at each propulsion oil cylinder is adjusted.
7. The valve control system of the shield tunneling machine push-splicing synchronous propulsion system according to claim 6, further comprising a pressure sensor installed on the propulsion cylinder for acquiring pressure data corresponding to the pressure of the propulsion cylinder in real time;
the pressure sensor is in communication connection with the processing unit, and the processing unit receives and displays pressure data sent by the pressure sensor.
8. The valve control system of the shield tunneling machine push-splicing synchronous propulsion system according to claim 6, further comprising a speed sensor installed on the propulsion cylinder for acquiring speed data corresponding to the speed of the propulsion cylinder in real time;
the speed sensor is in communication connection with the processing unit, and the processing unit receives and displays speed data sent by the speed sensor.
9. The valve control system of the shield tunneling machine push-fit synchronous propulsion system according to claim 6, wherein the control valve is a proportional pressure reducing valve or a proportional overflow valve.
10. The valve control system of the shield tunneling machine push-splicing synchronous propulsion system according to claim 6, wherein when the shield tunneling machine is in the push-splicing synchronous state, the propulsion system is configured to calculate propulsion pressures of the remaining propulsion cylinders according to the propulsion cylinders that need to be retracted, and further calculate a corresponding pressure target value by using the propulsion pressures and form a corresponding propulsion command.
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| CN202110256339.8A CN112832789A (en) | 2021-03-09 | 2021-03-09 | Valve control method and system for shield tunneling machine push-splicing synchronous propulsion system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117094253A (en) * | 2023-10-20 | 2023-11-21 | 中铁十四局集团有限公司 | Oil cylinder thrust distribution algorithm and system based on thrust uniformity under pushing and spelling synchronization |
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| CN208702804U (en) * | 2018-09-07 | 2019-04-05 | 中船重型装备有限公司 | A kind of shield machine speedy drivage cylinder control system |
| CN111810174A (en) * | 2020-07-24 | 2020-10-23 | 上海隧道工程有限公司 | Method for calculating jacking force distribution of shield propulsion system in push-splicing synchronization mode |
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| CN117094253A (en) * | 2023-10-20 | 2023-11-21 | 中铁十四局集团有限公司 | Oil cylinder thrust distribution algorithm and system based on thrust uniformity under pushing and spelling synchronization |
| CN117094253B (en) * | 2023-10-20 | 2024-01-23 | 中铁十四局集团有限公司 | Oil cylinder thrust distribution method and system based on thrust uniformity under pushing and splicing synchronization |
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