CN221220482U - Control system for pressure detection and alarm of main driving sealing grease of shield tunneling machine - Google Patents
Control system for pressure detection and alarm of main driving sealing grease of shield tunneling machine Download PDFInfo
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- CN221220482U CN221220482U CN202322392218.3U CN202322392218U CN221220482U CN 221220482 U CN221220482 U CN 221220482U CN 202322392218 U CN202322392218 U CN 202322392218U CN 221220482 U CN221220482 U CN 221220482U
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- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 239000004519 grease Substances 0.000 title claims abstract description 63
- 230000005641 tunneling Effects 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 title description 2
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 16
- 230000005856 abnormality Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101100126274 Escherichia coli (strain K12) iraM gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to a control system for detecting and alarming pressure of main driving sealing grease of a shield machine, which comprises a main driving sealing grease pressure source, a pressure sensor, a power module, a buzzer, a PLC (programmable logic controller), an interlocking protection controller and an upper computer, wherein the main driving sealing grease pressure source is connected with the pressure sensor; the main drive sealing grease pressure source is fed back to the main drive built-in pressure sensor, and the signal output end of the main drive built-in pressure sensor is connected with the input end of an analog input module of the PLC; the output port of the communication module of the PLC is connected with the communication input port of the upper computer; the output end of the digital quantity output module of the PLC is connected with the power input end of the control relay coil of the buzzer. The utility model can detect the pressure of the main driving sealing grease in real time in shield tunneling, alarm in abnormal real time and protect abnormal overtime, thereby finding out problems more intuitively and clearly and realizing the advance planning and the advance protection of fault problems.
Description
Technical Field
The utility model relates to the technical field related to shield machines, in particular to a control system for detecting and alarming pressure of main driving sealing grease of a shield machine.
Background
The full-name shield tunnel boring machine of the shield machine is special engineering equipment for tunneling. Along with the rapid development of China rail transit, the demand of domestic shield tunneling machines is increasing, and the shield tunneling machines become indispensable high-end equipment in the field of subway tunnel construction.
The main driving of the shield machine is a heart of the shield machine, is a core component for providing power output for the tunneling of the shield machine, has a complex structure system, extremely high requirements on manufacturing and assembling processes, is extremely difficult and inconvenient to maintain in the tunneling construction process, and directly leads to the requirement that the main driving device of the shield machine has high service life and stable working reliability.
The main drive seal is an important factor affecting the life of the main drive and is also a key factor ensuring its proper operation.
However, the simplest and most rapid way for detecting the quality of the sealing performance of the main drive in the shield tunneling is to detect the pressure of the sealing grease of the main drive, display the pressure of the sealing grease of the main drive in real time, alarm the detected abnormal pressure in real time, perform interlocking protection on abnormal pressure overtime and the like, so that equipment maintenance technicians can find out the hidden trouble of the sealing fault of the main drive as soon as possible, and eliminate the fault problem in time. Therefore, it is especially necessary to design a control system for detecting and alarming the pressure of the main driving sealing grease of the shield machine.
In the prior art, the main driving sealing performance of the shield machine is detected mainly by manually testing the sealing performance of the main driving sealing by taking a pressure gauge as a pressure measuring device in the shield production, manufacturing and assembly process, and judging and maintaining the main driving sealing performance by detecting the pulse times of the main driving sealing grease in the shield tunneling use process after qualified test equipment leaves factory. The pressure of the main drive sealing grease is not detected in real time in the shield tunneling process, so that the pressure real-time detection, real-time display, pressure abnormality alarm and pressure abnormality overtime start an interlocking protection control program and stop the main drive rotation of the cutterhead cannot be realized, and equipment maintenance technicians can be enabled to more intuitively and clearly discover the hidden trouble of the main drive sealing in time and eliminate the trouble in time.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a control system for detecting and alarming the pressure of main driving sealing grease of a shield tunneling machine, which can detect the pressure of the main driving sealing grease in real time in shield tunneling and display the actual pressure value of the main driving sealing grease on an upper computer.
The utility model is realized by the following technical measures.
A control system for detecting and alarming the pressure of main driving sealing grease of a shield tunneling machine comprises a main driving sealing grease pressure source, a main driving built-in pressure sensor, a power module, a buzzer, a PLC (programmable logic controller), an interlocking protection controller, an upper computer and a power module for providing working power for the main driving built-in pressure sensor and the buzzer; the PLC programmable controller comprises an analog quantity input module, a digital quantity output module and a communication module; the main drive sealing grease pressure source is fed back to the main drive built-in pressure sensor, and the signal output end of the main drive built-in pressure sensor is connected with the input end of an analog input module of the PLC; the output port of the communication module of the PLC is connected with the communication input port of the upper computer; the output end of the digital quantity output module of the PLC is connected with the power input end of the control relay coil of the buzzer; the analog quantity input module, the digital quantity output module and the communication module are part of the PLC; when the buzzer is activated and the alarm exceeds a preset time, a control program of the interlocking protection controller is triggered; the control program of the interlocking protection controller starts the rotating action for stopping the main drive of the shield tunneling machine.
The main driving sealing grease pressure source refers to a pressure feedback source formed by pumping sealing grease to the inner periphery and the outer periphery of a main driving through a pneumatic grease pump in the tunneling process of the shield machine.
The main drive built-in pressure sensor comprises a main drive inner periphery pressure sensor and a main drive outer periphery pressure sensor, wherein the measurement range of the two adopted pressure sensors is 0-2 mpa, and the signal output type of the sensors is analog signal direct current 4-20 mA.
The power supply module is an alternating current 220V-24V direct current power supply, the power is 150W, and working power supplies are provided for the pressure sensor and the buzzer.
The buzzer is an LED flashing audible and visual alarm with a red lamp, and the working power supply is a 24V direct current power supply.
The analog input module is a Q68ADI module, wherein two groups of signal acquisition channels are added on available standby points of the Q68ADI module and are respectively connected with the output end of the main driving inner peripheral pressure sensor and the output end of the main driving outer peripheral pressure sensor; the digital quantity output module is a QY42P module, wherein a digital quantity output signal point position is added on an available standby point of the QY42P module and is connected with the power input end of the control relay coil of the buzzer. The PLC is characterized in that an analog quantity input module Q68ADI and a digital quantity output module QY42P on an original PLC system of a main control room of the shield machine are used, two groups of signal acquisition channels are respectively added on available standby points of the Q68ADI module to acquire output signals of a main drive built-in pressure sensor, and a digital quantity output signal point is added on the available standby points of the QY42P module to drive alarm actions of a buzzer.
And an interlocking protection control program is loaded in the interlocking protection controller, and after the pressure of the main driving sealing grease is detected to generate an abnormal alarm, the interlocking protection control program fails to eliminate the fault and still continues the alarm within a preset time, and then the main driving rotation action of the shield tunneling machine is stopped by triggering and interrupting through a PLC (programmable logic controller) of the main control room.
The upper computer calculates and processes the collected pressure sensor signals through a PLC signal conversion program and then uploads the signals to an upper computer manual interface to display the detected pressure value of the main driving sealing grease in real time, so that the real-time monitoring of the pressure of the main driving sealing grease in shield tunneling can be realized.
The control system for detecting and alarming the sealing grease pressure of the main drive of the shield machine is suitable for real-time detection, abnormal real-time alarming and abnormal overtime protection of the sealing grease pressure of the inner periphery and the outer periphery of the main drive in the tunneling of the shield machine so as to achieve the purposes of monitoring the sealing performance condition of the main drive and protecting functions. The method is different from the prior art that a pressure gauge is used as a pressure measuring device to manually measure the pressure of the main driving seal in the shield production, manufacturing and assembly process to detect the sealing performance, and after qualified equipment leaves the factory, the main driving seal oil pulse frequency is detected to judge and maintain the main driving seal performance in the shield tunneling use process.
The utility model can detect the pressure of the main driving sealing grease in real time in shield tunneling and display the actual pressure value in the upper computer, further can judge whether the measured pressure value is in a normal pressure range in real time, if the pressure abnormality exceeds the normal pressure range, the control room buzzer can send out pressure abnormality alarm acousto-optic prompt, if the pressure abnormality alarm fault cannot be processed within a certain time, and finally, the alarm exceeds the preset time, the interlocking protection control program can be triggered, and the program can interrupt the rotating action of the main driving of the shield machine. The utility model can continuously monitor the sealing performance condition of the main drive, and can detect the grease pressure of the main drive sealing system in real time, alarm in abnormal real time and protect the pressure abnormality overtime in shield tunneling. The monitoring of the sealing grease pressure is used for realizing advanced planning and advanced protection on the problem of preventing the main driving sealing performance fault, the problem can be found more intuitively and clearly, the problem can be found and treated in time, and the method has the important significance of preventing the main driving fault, so that the service life of the main driving of the shield machine and the reliability of the working stability are improved.
Drawings
FIG. 1 is a schematic diagram of the control system for detecting and alarming the pressure of main driving sealing grease of a shield tunneling machine.
FIG. 2 is a schematic diagram of the positions of grease pressure sources at the inner periphery and the outer periphery of a main drive of a shield machine.
Fig. 3 is a schematic diagram of the power module wiring of the present utility model.
FIG. 4 is a schematic diagram of the wiring of the pressure sensors at the inner periphery and the outer periphery of the main drive of the shield tunneling machine.
Fig. 5 is a schematic diagram of the buzzer wiring of the present utility model.
FIG. 6 is a schematic diagram of the distribution of the analog input modules of the PLC of the present utility model.
FIG. 7 is a schematic diagram of the distribution of the digital output module of the PLC of the present utility model.
Fig. 8 is a schematic diagram of a PLC pressure value conversion operation program according to the present utility model.
Fig. 9 is a schematic diagram of a control logic program of the PLC driven buzzer in accordance with the present utility model.
Fig. 10 is a schematic diagram of the interlock protection control program of the present utility model.
Description of the embodiments
The present utility model is further described below in order to facilitate the understanding of the technical means, the creation features and the objects of the present utility model.
As shown in fig. 1, the utility model mainly comprises seven parts of a main drive sealing grease pressure source 1, a main drive built-in pressure sensor 2, a power module 3, a buzzer 4, a PLC programmable controller 5, an interlocking protection controller 6 and an upper computer 7. The main drive sealing grease pressure source is fed back to the main drive built-in pressure sensor, and the signal output end of the main drive built-in pressure sensor is connected with the input end of an analog input module of the PLC; the output port of the communication module of the PLC is connected with the communication input port of the upper computer; the output end of the digital quantity output module of the PLC is connected with the power input end of the control relay coil of the buzzer; when the buzzer is activated and the alarm exceeds a preset time, a control program of the interlocking protection controller is triggered; the control program of the interlocking protection controller starts the rotating action for stopping the main drive of the shield tunneling machine. When the shield tunneling machine is tunneling, sealing grease is pumped to the inner periphery and the outer periphery of a main drive through a pneumatic grease pump to form a main drive sealing grease pressure source 1, the pressure is fed back to a main drive built-in pressure sensor 2, a power module 3 provides working power supplies of the two built-in pressure sensors 2 at the outer periphery and the inner periphery of the main drive and a buzzer 4, the pressure source 1 is induced by the main drive built-in pressure sensor 2 to output analog signals to a PLC (programmable logic controller) 5, whether the buzzer 4 works or not is controlled through program operation, and meanwhile, the working output is uploaded to an upper computer 7 to display the measured main drive sealing grease pressure value of the shield tunneling machine in real time, if the program drives the output buzzer 4 to work, the main drive interlocking protection with abnormal sealing grease pressure is started after the preset time is output.
As shown in fig. 2, in the position diagram of the grease pressure source at the inner periphery and the outer periphery of the main drive of the shield machine, the pneumatic grease pump pumps sealing grease to the main drive sealing position 21 to be used as the main drive outer periphery sealing grease pressure source, and the pneumatic grease pump pumps sealing grease to the main drive sealing position 22 to be used as the main drive inner periphery sealing grease pressure source.
As shown in fig. 3, the DC power supply module DP1 has a power of 150W, the incoming line power is taken from the AC 220V power supply on the shield machine, the power is input to the power supply module DP1 through the breaker ELB1, the DC power supply DC 24V with the positive electrode P1 and the negative electrode N1 is output to the pressure sensor for power supply, and the DC power supply DC 24V with the positive electrode P2 and the negative electrode N2 is output to the buzzer for power supply.
As shown in fig. 4, the range of the peripheral grease pressure sensor G1 is 0-2 mpa, the sensor symbol mark positive electrode is connected with the direct current power supply P1, S is the sensor signal output end, the output signal ggr+ and the direct current power supply N1 form a direct current 4-20 ma signal loop and output to the PLC analog input module, and the inner peripheral grease pressure sensor G2 uses the technical parameters and the wiring principle as the peripheral grease pressure sensor.
As shown in fig. 5, in the present embodiment, the working power is taken from P2 and N2 of the DC power module DP1, connected to the DC power source DC24V, and used to drive the intermediate relay KA1 through the output of the PLC output module, and then used to control the power-on operation of the buzzer through the intermediate relay contact, so as to realize the wiring control of the buzzer HA.
As shown in fig. 6, a schematic distribution diagram of a PLC analog input module in this embodiment is shown, an analog input module Q68ADI on a PLC system of a shield tunneling machine control room is applied to two sets of channels CH1 and CH2 of the module, and is used to collect output signals ngr+ and ggr+ of 4-20 ma of direct currents of an inner peripheral pressure sensor and an outer peripheral pressure sensor, then the analog signals are converted into corresponding digital signals through PLC processing and are stored in an internal memory of the PLC, the memory addresses are D0 and D1 respectively, and then data are transmitted to addresses W100 and W101 respectively through program operation.
Fig. 7 is a schematic distribution diagram of a PLC digital quantity output module in this embodiment, where a digital quantity output module QY42P on the PLC system of the shield tunneling machine control room is applied to an output point location 1B20 and an address Y100 for outputting and driving a coil of the intermediate relay KA 1.
As shown in fig. 8, a schematic diagram of a PLC pressure value conversion operation program according to the present embodiment is shown, in which left and right program segments are connected to each other, and the pressure value measured by the sensor is obtained through the program operation.
As shown in fig. 9, a schematic diagram of a control logic program of a PLC driven buzzer in the present embodiment is shown, in which left and right program segments are continuous program segments, and by comparing the measured seal oil pressure values of the inner and outer peripheries with the abnormal set values of the oil pressure values of the inner and outer peripheries, it is determined whether the oil pressure of the inner and outer peripheries is abnormal, so as to control whether an alarm buzzer and an alarm timing for abnormal seal oil pressure are output.
As shown in fig. 10, in the schematic diagram of the interlock protection control program according to the present embodiment, the interlock control of the main drive start condition is triggered by the output of the seal grease pressure abnormality alarm timer, so that the interlock protection is interrupted to stop the main drive rotation operation of the shield machine.
The control system for detecting and alarming the pressure of the main driving sealing grease of the shield machine disclosed by the utility model has the advantages that the system can predict and protect the failure problem of the sealing performance of the main driving in advance by monitoring the pressure of the sealing grease, can discover the problem more intuitively and clearly, can discover and treat the problem in time, has important significance for preventing the failure of the main driving, and is beneficial to prolonging the service life and the working stability and reliability of the main driving of the shield machine.
What is not described in detail in this specification is prior art known to those skilled in the art.
Finally, it should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the scope of the present utility model should not be limited thereto, so that the present utility model is not limited to the above-mentioned embodiments.
Claims (6)
1. A control system for detecting and alarming pressure of main driving sealing grease of a shield tunneling machine is characterized in that: the device comprises a main drive sealing grease pressure source, a main drive built-in pressure sensor, a power module, a buzzer, a PLC (programmable logic controller), an interlocking protection controller, an upper computer and a power module for providing working power for the main drive built-in pressure sensor and the buzzer; the PLC programmable controller comprises an analog quantity input module, a digital quantity output module and a communication module; the main drive sealing grease pressure source is fed back to the main drive built-in pressure sensor, and the signal output end of the main drive built-in pressure sensor is connected with the input end of an analog input module of the PLC; the output port of the communication module of the PLC is connected with the communication input port of the upper computer; the output end of the digital quantity output module of the PLC is connected with the power input end of the control relay coil of the buzzer.
2. The control system for detecting and alarming the pressure of the main driving sealing grease of the shield tunneling machine according to claim 1, wherein: the main driving sealing grease pressure source is a pressure feedback source formed by pumping sealing grease to the inner periphery and the outer periphery of the main driving through a pneumatic grease pump in the tunneling process of the shield machine.
3. The control system for detecting and alarming the pressure of the main driving sealing grease of the shield tunneling machine according to claim 1 or 2, wherein: the measuring range of the main drive built-in pressure sensor is 0-2 mpa, and the signal output type of the main drive built-in pressure sensor is analog current signal.
4. The control system for detecting and alarming the pressure of the main driving sealing grease of the shield tunneling machine according to claim 1 or 2, wherein: the power supply module is an AC 220V-DC 24V direct current power supply, and the power is 150W.
5. The control system for detecting and alarming the pressure of the main driving sealing grease of the shield tunneling machine according to claim 1 or 2, wherein: the buzzer is an LED flashing audible and visual alarm with a red lamp, and the working power supply is a 24V direct current power supply.
6. The control system for detecting and alarming the pressure of the main driving sealing grease of the shield tunneling machine according to claim 1 or 2, wherein: the analog quantity input module adopts Q68ADI, and the digital quantity output module adopts QY42P; two groups of analog input signal acquisition channels of the Q68ADI are respectively connected with the output ends of the main drive internal and external peripheral pressure sensors, and one digital output point position of the QY42P is connected with the power supply input end of the control relay coil of the buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322392218.3U CN221220482U (en) | 2023-09-04 | 2023-09-04 | Control system for pressure detection and alarm of main driving sealing grease of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322392218.3U CN221220482U (en) | 2023-09-04 | 2023-09-04 | Control system for pressure detection and alarm of main driving sealing grease of shield tunneling machine |
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| Publication Number | Publication Date |
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| CN221220482U true CN221220482U (en) | 2024-06-25 |
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| CN202322392218.3U Active CN221220482U (en) | 2023-09-04 | 2023-09-04 | Control system for pressure detection and alarm of main driving sealing grease of shield tunneling machine |
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| CN (1) | CN221220482U (en) |
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2023
- 2023-09-04 CN CN202322392218.3U patent/CN221220482U/en active Active
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