CN112832788A - Pump control method and system for shield tunneling machine push-splicing synchronous propulsion system - Google Patents
Pump control method and system for shield tunneling machine push-splicing synchronous propulsion system Download PDFInfo
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- CN112832788A CN112832788A CN202110256329.4A CN202110256329A CN112832788A CN 112832788 A CN112832788 A CN 112832788A CN 202110256329 A CN202110256329 A CN 202110256329A CN 112832788 A CN112832788 A CN 112832788A
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- 238000004891 communication Methods 0.000 claims description 8
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- 230000000694 effects Effects 0.000 abstract description 4
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- 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
- E21D9/0607—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 OR ROCK 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 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
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- 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
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Abstract
The invention relates to a pump control method and a system for a shield tunneling machine push-splicing synchronous propulsion system, wherein the pump control method comprises the following steps: a corresponding reversing valve is configured for each propulsion oil cylinder; providing at least two pump sets, and connecting the at least two pump sets with a reversing valve on a propulsion oil cylinder; when the shield machine is in a pushing and splicing synchronous state, acquiring a pushing instruction output by a pushing system, wherein the pushing instruction comprises the number information of a pushing oil cylinder and pushing pressure matched with the pushing oil cylinder, and the number of the pushing pressure is at least two; the output pressure of the corresponding pump set is consistent with the corresponding propelling pressure; and the corresponding reversing valve is controlled and adjusted by utilizing the number information of the propulsion oil cylinder, so that the propulsion oil cylinder is connected with the corresponding pump set, and the propulsion oil cylinder is provided with propulsion pressure matched with the propulsion oil cylinder through the connected pump set. The invention realizes the free combination zone control of the propulsion oil cylinder, achieves the technical effects of flexible, variable and adjustable zone control, and can reduce the number of equipment, thereby reducing the cost and simplifying the structural design.
Description
Technical Field
The invention relates to the field of shield construction engineering, in particular to a pump control method and a pump control system of 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, the cost is high, the flexibility is poor, and the composition of the propulsion oil cylinders in each pressure subarea cannot be flexibly changed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a pump control method and a pump control system of 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 pump control method of a shield machine push-splicing synchronous propulsion system, wherein a plurality of propulsion oil cylinders are arranged on a shield machine, and the pump control method comprises the following steps:
providing a reversing valve, and configuring a corresponding reversing valve for each propulsion oil cylinder;
providing at least two pump sets, and connecting the at least two pump sets with a reversing valve on a propulsion oil cylinder;
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 pressure partition information of the propulsion system, number information of a propulsion oil cylinder corresponding to each pressure partition and propulsion pressure matched with the propulsion oil cylinder, the number of the pressure partitions is at least two, and each pressure partition is correspondingly provided with one propulsion pressure;
controlling and adjusting the output pressure of the corresponding pump set by using the obtained at least two propelling pressures to ensure that the output pressure of the corresponding pump set is consistent with the corresponding propelling pressure; and
and controlling and adjusting the corresponding reversing valve by using the serial number information of the propulsion oil cylinder so as to connect the propulsion oil cylinder with the corresponding pump set, and providing the propulsion oil cylinder with propulsion pressure matched with the propulsion oil cylinder through the connected pump set.
According to the pump control method, the free combination zone control of the propulsion oil cylinder is realized through the arrangement of the pump groups and the reversing valve, the technical effects of flexible, variable and adjustable zone control are achieved, at least two pump groups can be arranged, and compared with the prior art that each propulsion oil cylinder is provided with one power source, the pump control method can greatly reduce the number of equipment, reduce the cost and simplify the structural design, is good in flexibility and can adapt to the change of the assembly position in time.
The pump control method of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the set number of the pump groups is matched with the number of the pressure zones, and the output pressure of the corresponding pump groups is controlled and adjusted by the corresponding propulsion pressure.
The pump 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 pump 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 pump control method of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that when the shield tunneling machine is in a push-splicing synchronous state, the propulsion system calculates the propulsion pressure of the rest of the propulsion oil cylinders according to the propulsion oil cylinders needing to be retracted and forms corresponding propulsion instructions.
The invention also provides a pump 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 pump control system comprises:
a reversing valve arranged at each propulsion oil cylinder;
the two pump sets are connected with reversing valves at the propulsion oil cylinders; and
the processing unit is in communication connection with each reversing valve, the at least two pump groups and the propulsion system, and is used for acquiring a propulsion instruction output by the propulsion system when the shield machine is in a push-splicing synchronization state, wherein the acquired propulsion instruction comprises pressure partition information of the propulsion system, number information of a propulsion oil cylinder corresponding to each pressure partition and propulsion pressure matched with the propulsion oil cylinder, the number of the pressure partitions is at least two, and each pressure partition is correspondingly provided with one propulsion pressure; the processing unit is also used for controlling and adjusting the output pressure of the corresponding pump set according to at least two propelling pressures so as to enable the output pressure of the corresponding pump set to be consistent with the corresponding propelling pressure; the processing unit is also used for controlling and adjusting the corresponding reversing valve according to the number information of the propulsion oil cylinder, so that the propulsion oil cylinder is connected with the corresponding pump set, and the propulsion oil cylinder is provided with the propulsion pressure matched with the propulsion oil cylinder through the connected pump set.
The pump control system of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the set number of the pump groups is matched with the number of the pressure zones, and the output pressure of the corresponding pump groups is controlled and adjusted by the corresponding propulsion pressure.
The pump control system of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the pump 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 correspondingly 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 pump control system of the shield tunneling machine push-splicing synchronous propulsion system is further improved in that the pump 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 correspondingly 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 pump control system of the shield tunneling machine push-splicing synchronous propelling system is further improved in that when the shield tunneling machine is in a push-splicing synchronous state, the propelling system is used for calculating the propelling pressure of the rest propelling cylinders according to the propelling cylinders needing to be retracted and forming corresponding propelling instructions.
Drawings
Fig. 1 is a system diagram of a pump control system of a shield tunneling machine push-splicing synchronous propulsion system.
FIG. 2 is a flow chart of a pump control method of the shield tunneling machine push-splicing synchronous propulsion system of the invention.
Fig. 3 is a schematic structural diagram of a shield machine and a thrust cylinder applied to the pump control method and system of the shield 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 pump control method and a pump 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 cannot be flexibly changed in the structural design of the conventional shield tunneling machine. The pump control method and the system provide at least two output pressures by arranging at least two pump sets, the at least two pump sets are both connected with the reversing valve arranged on the propulsion oil cylinder, and the propulsion oil cylinder can be flexibly adjusted to be connected with one of the pump sets by utilizing the reversing valve, so that variable zone control of a plurality of propulsion oil cylinders is realized, free combination zone division can be carried out, and the control flexibility is improved. Structurally, connecting lines can be simplified for independent power sources by the two pump groups, so that the structural connection is simple and convenient to operate, and the cost can be reduced. The pump control method and system of the shield tunneling machine push-splicing synchronous propulsion system of the invention are explained below with reference to the accompanying drawings.
Referring to fig. 1, a system diagram of a pump control system of the shield tunneling machine push-splicing synchronous propulsion system is shown. The pump 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 pump control system of the shield tunneling machine push-splicing synchronous propulsion system of the present invention is used for controlling the propulsion cylinders, and as shown in fig. 3, the structural configuration of a circular shield tunneling machine is shown, wherein a plurality of propulsion cylinders 11 are provided on the shield tunneling machine 10, and the plurality of propulsion 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 pump control system comprises a plurality of reversing valves 21, at least two pump groups 22 and a processing unit 23, wherein the reversing valves 21 are arranged at each propulsion oil cylinder 11, the reversing valves 21 are correspondingly connected with the propulsion oil cylinders 11 one by one, and the number of the reversing valves 21 is consistent with that of the propulsion oil cylinders 11; at least two pump groups 22 are connected with the reversing valves 21 at the positions of the propulsion cylinders 11, each pump group 22 is connected with each reversing valve 21 through a line, the pump groups 22 can be connected with the corresponding propulsion cylinders 11 through the reversing valves 21, and the pump groups 22 provide power for the propulsion cylinders 11. The processing unit 23 is in communication connection with each reversing valve 21, at least two pump groups 22 and a propulsion system, the processing unit 23 can control the reversing valves 21 and control the corresponding pump groups 22, the processing unit 23 is used for acquiring a propulsion instruction output by the propulsion system when the shield tunneling machine 10 is in a push-splicing synchronization state, the acquired propulsion instruction comprises pressure partition information of the propulsion system, number information of a propulsion oil cylinder 11 corresponding to each pressure partition and propulsion pressure matched with the propulsion oil cylinder 11, the number of the propulsion oil cylinder 11 is at least two in the propulsion instruction, and each pressure partition is correspondingly provided with one propulsion pressure, so that the number of the propulsion pressure is also at least two; the processing unit 23 is also used to control and regulate the output pressure of the corresponding pump group 22 according to at least two propulsion pressures, so that the output pressure of the corresponding pump group 22 is consistent with the corresponding propulsion pressure, when there are two propulsion pressures, there are two pump groups 22, and the output pressure of one pump group 22 is equal to one propulsion pressure and the output pressure of the other pump group 22 is equal to the other propulsion pressure. The processing unit 23 is further configured to control and adjust the corresponding ring valve 21 according to the number information of the propulsion cylinder 11, so that the propulsion cylinder 11 is connected to the corresponding pump group 22, and provide the propulsion cylinder 11 with a propulsion pressure matched with the propulsion cylinder 11 through the connected pump group 22.
The reversing valve 21 can realize which pump group 22 the propulsion cylinder 11 is connected with, the propulsion instruction output by the propulsion system comprises the number information of the propulsion cylinder and the propulsion pressure matched with the propulsion cylinder, after the processing unit 23 receives the propulsion instruction, the processing unit is equivalent to know the pressure subareas of the propulsion cylinder with the propulsion pressure as the classification standard, when the propulsion pressure is two, the propulsion cylinder can be divided into two pressure subareas, the propulsion cylinder in the first pressure subarea needs to execute the first propulsion pressure, the propulsion cylinder in the second pressure subarea needs to execute the second propulsion pressure, the processing unit 23 realizes that each propulsion cylinder is connected with the corresponding pump group by controlling the reversing valve of each propulsion cylinder, namely, the propulsion cylinder is distributed with the propulsion pressure matched with the propulsion cylinder, and flexible free combination subarea and variable subarea control is realized.
In one embodiment of the invention, the number of pump groups 22 is adapted to the number of pressure sectors and the output pressure of the respective pump group is regulated by means of a respective feed pressure control.
In a preferred embodiment, there are two pressure zones and two boost pressures, and correspondingly, two pump stacks 22. The shield constructs the machine and is in pushing away under piecing up the synchronization condition, and the propulsion cylinder in shield constructs the machine rear part and has partly need be in the state of contracting in order to make out the operating space, makes things convenient for the erector to carry out assembling of section of jurisdiction. The thrust oil cylinder in the retraction state does not participate in the thrust state, and in order to maintain the stability of the shield tunneling machine in the thrust process, the thrust pressure of the thrust oil cylinder at the symmetrical position of the thrust oil cylinder in the retraction state needs to be correspondingly reduced, and the thrust pressure of the thrust oil cylinders at the other positions needs to be increased.
In another preferred embodiment, there are three pressure zones and three boost pressures, and correspondingly, there are three pump sets 22, with one for each boost pressure and the output pressure of each pump set. The thrust oil cylinders in the retraction state do not participate in the thrust state, the thrust pressure of the thrust oil cylinders symmetrically arranged with the thrust oil cylinders in the retraction state is adjusted to be small, and further, the thrust pressure of the thrust oil cylinders close to the retraction state in the rest thrust oil cylinders is larger than that of the thrust oil cylinders far away from the retraction state, so that the stability of the shield tunneling machine in the thrust process can be improved, and the construction quality of the synchronous thrust splicing is ensured.
In an embodiment of the present invention, the pump 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 corresponding to the pressure of the propulsion cylinders 11 in real time, 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 pump control system of the present invention further includes a speed sensor installed on the propulsion cylinder 11, the speed sensor is used for acquiring speed of the propulsion cylinder 11 in real time to form speed data, a 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 pump 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 a specific embodiment of the invention, when the shield tunneling machine is in a pushing and splicing synchronous state, the propulsion system is used for calculating the propulsion pressure of the rest of the propulsion oil cylinders according to the propulsion oil cylinders needing to be retracted 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 cylinder, the rest of the propulsion oil cylinders are partitioned, the rest of the propulsion oil cylinders can be divided into two areas or three areas, then the target thrust of each area is calculated according to the total thrust of the shield tunneling construction and is used as the propulsion pressure, the number information of the propulsion oil cylinders in each area is associated with the propulsion pressure to form a propulsion instruction, and the propulsion instruction is sent to a processing unit of the pump control system.
Preferably, the propulsion system calculates the propulsion pressure of the propulsion oil cylinder in an adaptive adjustment mode, a pressure variable value is arranged in the propulsion system, the propulsion system sets the propulsion pressure of the propulsion oil cylinder symmetrical to the retracted propulsion oil cylinder to 0, then the total thrust is evenly distributed to the rest propulsion oil cylinders, the propulsion pressure of the propulsion oil cylinder close to the retraction position and a pressure variable value are gradually added to serve as the current propulsion pressure, the propulsion pressure of the propulsion oil cylinder far away from the retraction position and a pressure variable value are subtracted to serve as the current propulsion pressure, the stability of the shield tunneling machine is judged through the speed and pressure data feedback of the propulsion oil cylinders until the propulsion speed of the shield tunneling machine is adjusted to be stabilized in a design range, and the adaptive distribution of the propulsion pressure is achieved.
In another embodiment, the propulsion system may adopt a calculation method disclosed in the patent application No. 202010720677.8 entitled thrust split synchronization mode shield propulsion system jacking force distribution calculation method to obtain the propulsion pressure of each jack, and form a propulsion command to be sent to a processing unit of the pump control system.
The pump set in the pump control system is responsible for providing a power source of propelling pressure, flexible partition of the propelling oil cylinder can be realized through the reversing valve, the propelling oil cylinder can be conveniently adjusted to the corresponding partition, and the corresponding propelling pressure is configured, so that the pressure controllability of the propelling system is high, the pump control system also has the advantage of energy conservation, and the construction requirement of synchronous pushing and splicing can be met.
The invention also provides a pump control method of the shield tunneling machine push-splicing synchronous propulsion system, which is explained below.
As shown in fig. 2, the pump control method of the shield tunneling machine push-splicing synchronous propulsion system of the present invention is used for controlling a plurality of propulsion cylinders arranged on a shield tunneling machine, and the pump control method includes the following steps: executing the step S101, providing a reversing valve, and configuring a corresponding reversing valve for each propulsion oil cylinder; then, step S102 is executed; step S102 is executed, at least two pump sets are provided, and the at least two pump sets are connected with a reversing valve on the propulsion oil cylinder; 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 the pushing system is obtained, the obtained pushing instruction comprises pressure partition information of the pushing system, number information of a pushing oil cylinder corresponding to each pressure partition and pushing pressure matched with the pushing oil cylinder, the number of the pressure partitions is at least two, and each pressure partition is correspondingly provided with one pushing pressure; then, step S104 is executed; step S104 is executed, the output pressure of the corresponding pump group is controlled and adjusted by utilizing the obtained at least two propelling pressures, and the output pressure of the corresponding pump group is consistent with the corresponding propelling pressure; then, step S105 is executed; and S105, controlling and adjusting the corresponding reversing valve by using the number information of the propulsion oil cylinder so that the propulsion oil cylinder is connected with the corresponding pump set, and providing the propulsion oil cylinder with propulsion pressure matched with the propulsion oil cylinder through the connected pump set.
According to the pump control method, the free combination zone control of the propulsion oil cylinder is realized through the arrangement of the pump groups and the reversing valve, the technical effects of flexible, variable and adjustable zone control are achieved, at least two pump groups can be arranged, and compared with the prior art that each propulsion oil cylinder is provided with one power source, the pump control method can greatly reduce the number of equipment, reduce the cost and simplify the structural design, is good in flexibility and can adapt to the change of the assembly position in time.
In one embodiment of the invention, the number of pump groups is adapted to the number of pressure sectors, and the output pressure of the respective pump group is regulated by means of the respective feed pressure control. In a preferred embodiment, there are two pressure zones and two boost pressures, and correspondingly, two pump stacks 22. In another preferred embodiment, there are three pressure zones, three propulsion pressures and correspondingly three pump sets 22, and the output pressure of each pump set corresponds to each propulsion pressure.
In one embodiment of the present invention, the method 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 method 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 a specific embodiment of the invention, when the shield tunneling machine is in a pushing and splicing synchronous state, the propulsion system calculates the propulsion pressure of the rest of the propulsion cylinders according to the propulsion cylinders needing to be retracted 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 pump control method of a shield machine pushing and splicing synchronous propulsion system is characterized by comprising the following steps:
providing a reversing valve, and configuring a corresponding reversing valve for each propulsion oil cylinder;
providing at least two pump sets, and connecting the at least two pump sets with a reversing valve on a propulsion oil cylinder;
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 pressure partition information of the propulsion system, number information of a propulsion oil cylinder corresponding to each pressure partition and propulsion pressure matched with the propulsion oil cylinder, the number of the pressure partitions is at least two, and each pressure partition is correspondingly provided with one propulsion pressure;
controlling and adjusting the output pressure of the corresponding pump set by using the obtained at least two propelling pressures to ensure that the output pressure of the corresponding pump set is consistent with the corresponding propelling pressure; and
and controlling and adjusting the corresponding reversing valve by using the serial number information of the propulsion oil cylinder so as to connect the propulsion oil cylinder with the corresponding pump set, and providing the propulsion oil cylinder with propulsion pressure matched with the propulsion oil cylinder through the connected pump set.
2. The pump control method of the shield tunneling machine push-splicing synchronous propulsion system according to claim 1, wherein the set number of the pump groups is matched with the number of the pressure zones, and the output pressure of the corresponding pump groups is controlled and adjusted by the corresponding propulsion pressure.
3. The pump 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.
4. The pump 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.
5. The pump 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 pressure of the remaining propulsion cylinders according to the propulsion cylinders to be retracted and forms corresponding propulsion instructions.
6. The utility model provides a shield constructs machine and pushes away pump control system who splices synchronous advancing system, the shield is equipped with a plurality of propulsion cylinders on the machine, its characterized in that, pump control system includes:
a reversing valve arranged at each propulsion oil cylinder;
the two pump sets are connected with reversing valves at the propulsion oil cylinders; and
the processing unit is in communication connection with each reversing valve, the at least two pump groups and the propulsion system, and is used for acquiring a propulsion instruction output by the propulsion system when the shield machine is in a push-splicing synchronization state, wherein the acquired propulsion instruction comprises pressure partition information of the propulsion system, number information of a propulsion oil cylinder corresponding to each pressure partition and propulsion pressure matched with the propulsion oil cylinder, the number of the pressure partitions is at least two, and each pressure partition is correspondingly provided with one propulsion pressure; the processing unit is also used for controlling and adjusting the output pressure of the corresponding pump set according to at least two propelling pressures so as to enable the output pressure of the corresponding pump set to be consistent with the corresponding propelling pressure; the processing unit is also used for controlling and adjusting the corresponding reversing valve according to the number information of the propulsion oil cylinder, so that the propulsion oil cylinder is connected with the corresponding pump set, and the propulsion oil cylinder is provided with the propulsion pressure matched with the propulsion oil cylinder through the connected pump set.
7. The pump control system of the shield tunneling machine push-splicing synchronous propulsion system according to claim 6, wherein the number of the set pump groups is matched with the number of the pressure zones, and the output pressure of the corresponding pump groups is controlled and adjusted by the corresponding propulsion pressure.
8. The pump control system of the shield tunneling machine pushing and splicing synchronous propulsion system according to claim 6, further comprising a pressure sensor installed on the propulsion cylinder and used 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.
9. The pump control system of the shield tunneling machine pushing and splicing synchronous propulsion system according to claim 6, further comprising a speed sensor installed on the propulsion cylinder and used for acquiring speed data formed by the speed of the propulsion 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.
10. The pump 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 used for calculating the propulsion pressure of the rest of the propulsion cylinders according to the propulsion cylinders to be retracted and forming corresponding propulsion instructions.
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