CN114858045A - Method and device for detecting abrasion of lip-shaped ring of shield machine and shield machine - Google Patents
Method and device for detecting abrasion of lip-shaped ring of shield machine and shield machine Download PDFInfo
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- 238000003860 storage Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 23
- 238000011897 real-time detection Methods 0.000 abstract description 5
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
The invention provides a method and a device for detecting wear of a lip-shaped ring of a shield machine and the shield machine, wherein the method comprises the following steps: acquiring a plurality of lip-shaped coil induced currents; the lip-shaped ring induction current is generated by cutting a runway magnetic field through a lead arranged on a lip-shaped ring of the shield machine; determining the position of a broken lead on the lip ring of the shield machine according to the induced current of the lip ring; and determining the abrasion result of the lip ring of the shield machine according to the position of the broken lead on the lip ring of the shield machine. The method takes the magnetic generating principle as a starting point, and realizes accurate online real-time detection of the wear amount of the lip ring of the shield machine by acquiring the induced current of the lip ring in real time and determining the wear condition of the lip ring by using the induced current of the lip ring, thereby ensuring that an operator can know the wear condition of the lip ring of the shield machine in time and providing a guarantee for the sealing property of the shield machine.
Description
Technical Field
The invention relates to the technical field of shield machines, in particular to a method and a device for detecting abrasion of a lip-shaped ring of a shield machine and the shield machine.
Background
The main drive of the shield machine is a direct power source for normal operation of the shield machine, and the integrity of the sealing property directly determines whether the main drive can work normally. The shield constructs owner's drive when tunnel operation, along with producing a large amount of soil and water sand stone granule, and the sealed effect of main drive is just blockking that those debris get into the main drive, avoids damaging the main bearing and leads to the shield to construct the machine paralysis. In the face of severe operation environment of the shield tunneling machine, how to ensure the integrity of the sealing performance of the main drive is critical.
The main driving tightness mainly comprises a lip-shaped ring and a track, wherein the track tightly rotates around a concentric shaft of the lip-shaped ring, and the lip-shaped ring is inevitably worn during long-time relative movement. The conventional sealing state detection method is used for indirectly judging the sealing integrity by measuring the temperature and the pressure of a sealing grease cavity, the method cannot accurately acquire the real state of the seal in time, and the information has hysteresis. With the development of electronic detection technology, there are new sensor solutions, such as a new pressure sensor based on a spring seat, which is installed on a runway, and there is a possibility that the sealing of the main drive is damaged to some extent, and in such a harsh environment, the sensor is also at risk of being damaged. Therefore, at present, no mature and effective rubber ring detection method exists.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention mainly aims to provide a method and a device for detecting the wear of a lip-shaped ring of a shield machine and the shield machine, so as to realize real-time and accurate detection of the wear condition of the lip-shaped ring of the shield machine.
In order to achieve the above object, an embodiment of the present invention provides a method for detecting wear of a lip ring of a shield machine, where the method includes:
acquiring a plurality of lip-shaped coil induced currents; the induced current of the lip-shaped ring is generated by cutting a runway magnetic field through a lead arranged on the lip-shaped ring of the shield machine;
determining the position of a broken lead on the lip ring of the shield tunneling machine according to the induced current of the lip ring;
and determining the abrasion result of the lip ring of the shield machine according to the position of the broken lead on the lip ring of the shield machine.
Optionally, in an embodiment of the present invention, determining a location of a broken wire on a lip ring of a shield tunneling machine according to an induced current of the lip ring includes:
if the current value of the induced current of the lip-shaped ring is zero, judging whether the time that the current value is continuously zero exceeds a preset time threshold value;
if the current value of the lead wire exceeds the preset value, the lead wire corresponding to the lip-shaped coil induced current with the current value continuously being zero is used as a grinding lead wire, and the grinding lead wire is utilized to determine the position of the grinding lead wire.
Optionally, in an embodiment of the present invention, the method further includes: and generating wear early warning information according to the wear result of the lip-shaped ring of the shield machine.
The embodiment of the invention also provides a device for detecting the wear of the lip ring of the shield machine, which comprises:
the induction current module is used for acquiring a plurality of lip-shaped coil induction currents; the induced current of the lip-shaped ring is generated by cutting a runway magnetic field through a lead arranged on the lip-shaped ring of the shield machine;
the lead position module is used for determining the position of a broken lead on the lip ring of the shield machine according to the induced current of the lip ring;
and the abrasion result module is used for determining the abrasion result of the lip ring of the shield machine according to the position of the broken lead on the lip ring of the shield machine.
Optionally, in an embodiment of the present invention, the wire position module includes:
the current value unit is used for judging whether the time that the current value is continuously zero exceeds a preset time threshold value or not if the current value of the induced current of the lip-shaped ring is zero;
and the worn lead unit is used for taking a lead corresponding to the lip-shaped coil induced current with the continuous zero current value as a worn-off lead when the time for which the current value is continuously zero exceeds a preset time threshold value, and determining the position of the worn-off lead by utilizing the worn-off lead.
Optionally, in an embodiment of the present invention, the apparatus further includes a wear warning module, configured to generate wear warning information according to a wear result of the lip ring of the shield tunneling machine.
The embodiment of the invention also provides a shield machine, which comprises a runway, a lip-shaped ring, a lead and two magnets;
two magnets are arranged on the runway; a plurality of groove rings are uniformly arranged on the lip-shaped ring, the groove rings are used for placing a lead, and the groove rings are positioned between the two magnets;
the shield machine is connected with the upper computer, after the runway rotates, a lead in the shield machine generates lip-shaped ring induction current by cutting magnetic induction lines generated by two magnets, and transmits the lip-shaped ring induction current to the upper computer for abrasion detection processing.
Optionally, in an embodiment of the present invention, the shield machine further includes a micro-current collecting module, and the micro-current collecting module is configured to collect the lip coil induced current and transmit the lip coil induced current to an upper computer.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method when executing the program.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
The method takes the magnetic generating principle as a starting point, and realizes accurate online real-time detection of the wear amount of the lip ring of the shield machine by acquiring the induced current of the lip ring in real time and determining the wear condition of the lip ring by using the induced current of the lip ring, thereby ensuring that an operator can know the wear condition of the lip ring of the shield machine in time and providing a guarantee for the sealing property of the shield machine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for detecting wear of a lip ring of a shield tunneling machine according to an embodiment of the present invention;
FIG. 2 is a flow chart of determining a location of a worn-out conductor in an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a shield tunneling machine according to an embodiment of the present invention;
FIG. 4 is a schematic view of a lip ring with a groove pattern in an embodiment of the present invention;
FIG. 5 is a schematic view of a lip ring with a wire according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the connection between the micro-current collection module and the lead according to the embodiment of the present invention;
FIG. 7 is a cross-sectional view of a raceway and lip ring according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a wire-cutting magnetic field according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a wear detection device for a lip ring of a shield tunneling machine according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a wire position module according to an embodiment of the invention;
FIG. 11 is a schematic structural diagram of a wear detection device for a lip ring of a shield tunneling machine according to another embodiment of the present invention;
fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for detecting wear of a lip-shaped ring of a shield machine and the shield machine.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a flowchart of a method for detecting wear of a lip ring of a shield machine according to an embodiment of the present invention is shown, and an execution main body of the method for detecting wear of a lip ring of a shield machine according to an embodiment of the present invention includes, but is not limited to, an upper computer. The method shown in the figure comprises the following steps:
step S1, obtaining a plurality of lip coil induced currents; the induced current of the lip-shaped ring is generated by cutting a runway magnetic field through a lead arranged on the lip-shaped ring of the shield machine;
step S2, determining the position of the broken conductor on the lip ring of the shield machine according to the induced current of the lip ring;
and step S3, determining the abrasion result of the lip ring of the shield machine according to the position of the abrasion broken lead on the lip ring of the shield machine.
The method is characterized in that magnets with different magnetic poles are fixed on two sides of a track of the shield tunneling machine, the lip-shaped ring with a lead is fixed in the middle of the two magnets, and when the track rotates, the lead on the lip-shaped ring and a magnetic field on the track move relatively to cut the magnetic field and generate induction current (namely induction current of the lip-shaped ring). Through the value of gathering induced-current to report the value to the host computer, the host computer is according to the size of induced-current, judges the wearing and tearing volume of rubber circle, and shows on the control screen, and reminds the staff in time to change the rubber circle, has avoided the gravel and sand to get into main drive destruction system.
Furthermore, after the upper computer obtains a plurality of lip-shaped coil induced currents, the position of the broken conductor on the lip-shaped ring of the shield machine is determined according to the values of the lip-shaped coil induced currents. Specifically, when the wire on the lip ring is broken after being worn, an induced current cannot be generated by the cutting magnetic field. Therefore, a time threshold is preset through an actual working condition, for example, 10 seconds, and when the time when the value of a certain lip-shaped coil induced current is zero exceeds the preset time threshold, the lead corresponding to the lip-shaped coil induced current is determined to be a broken lead.
Furthermore, the distance between the leads arranged on the lip ring of the shield machine is preset, and each lead has corresponding position information on the lip ring. According to the preset and stored wire position information, when a certain wire is judged to be a broken wire, the position information corresponding to the broken wire, namely the broken wire position, can be obtained.
Furthermore, after the position of the broken guide line is determined, the abrasion result of the lip-shaped ring of the shield machine can be obtained. Specifically, the wear loss of the shield machine lip ring corresponding to different positions of the broken lead can be set in a preset mode. Therefore, after the position of the broken lead is known, the abrasion loss of the lip ring of the shield machine can be determined.
Specifically, the abrasion result of the rubber ring of the shield tunneling machine is determined by utilizing the corresponding relation between the position of the preset abrasion lead and the abrasion degree. Wherein, because the position that the wire set up on the lip shape circle is different, the outermost wire is worn out first, and the amount of wear that different position wire is worn out and represented is different. The lip-shaped ring can be abraded in a mode of experiment in advance, after the lead is abraded, the abrasion loss of the current lip-shaped ring is measured, and therefore the corresponding relation between different lead positions and the abrasion loss, namely the corresponding relation between the abrasion lead positions and the abrasion degree, can be obtained.
As an embodiment of the present invention, as shown in fig. 2, determining a location of a broken wire on a lip ring of a shield machine according to an induced current of the lip ring includes:
step S21, if the current value of the lip-shaped coil induced current is zero, judging whether the time that the current value is continuously zero exceeds a preset time threshold value;
and step S22, if the current value exceeds the preset value, taking the lead corresponding to the lip-shaped ring induced current with the current value continuously being zero as a wear-off lead, and determining the position of the wear-off lead by utilizing the wear-off lead.
Wherein, because the wire on the lip shape circle breaks after wearing and tearing, can not produce induced current through the cutting magnetic field. Therefore, a time threshold is preset through an actual working condition, for example, 10 seconds, and when the time when the value of a certain lip-shaped coil induced current is zero exceeds the preset time threshold, the lead corresponding to the lip-shaped coil induced current is determined to be a broken lead.
Furthermore, the distance between the leads arranged on the lip ring of the shield machine is preset, and each lead has corresponding position information on the lip ring. According to the preset and stored wire position information, when a certain wire is judged to be a broken wire, the position information corresponding to the broken wire, namely the broken wire position, can be obtained.
As an embodiment of the invention, the method further comprises: and generating wear early warning information according to the wear result of the lip-shaped ring of the shield machine.
According to the actual working condition requirements, the values of different abrasion amounts can be correspondingly divided into slight abrasion, ordinary abrasion, namely serious abrasion and the like, namely abrasion results. When the abrasion result is serious abrasion, abrasion early warning information can be generated and sent to an operator, so that the problem caused by insufficient sealing performance of the lip-shaped ring of the shield machine is avoided in time.
The method takes the magnetic generating principle as a starting point, and the lip-shaped ring induction current is acquired in real time, so that the lip-shaped ring abrasion condition is determined by utilizing the lip-shaped ring induction current, the accurate online real-time detection of the abrasion loss of the lip-shaped ring of the shield machine is realized, the operation personnel can know the abrasion condition of the lip-shaped ring of the shield machine in time, and meanwhile, a guarantee is provided for the sealing property of the shield machine.
Fig. 3 is a schematic cross-sectional view of a shield tunneling machine according to an embodiment of the present invention, where the shield tunneling machine includes: a runway 1, a lip-shaped ring 5 (a lip-shaped rubber ring/a lip-shaped sealing ring), a lead 3 and two magnets 2 and 4;
two magnets 2 and 4 are arranged on the runway 1; a plurality of groove rings are uniformly arranged on the lip-shaped ring 5, the groove rings are used for placing the lead 3, and the groove rings are positioned between the two magnets;
the shield machine is connected with an upper computer, after the runway 1 rotates, a lead 3 in the shield machine generates lip-shaped ring induction current by cutting magnetic induction lines generated by two magnets 2 and 4, and transmits the lip-shaped ring induction current to the upper computer for abrasion detection processing.
As an embodiment of the invention, the shield machine further comprises a micro-current collecting module 7, and the micro-current collecting module 7 is used for collecting the lip-shaped coil induced current and transmitting the lip-shaped coil induced current to an upper computer.
In this embodiment, the apparatus in fig. 3 includes: a runway with magnets, the magnets being mainly used for generating a magnetic field; the thin conducting wire is arranged on the rubber ring and used for cutting the magnetic field lines to generate induced current; the micro-current acquisition control module is used for acquiring induced current and reporting the induced current to an upper computer; the rubber ring is provided with groove rings with different diameters and equal intervals, and the groove rings are convenient for arranging wires; and the shielded wire is used for communicating with the upper computer. Specifically, the magnet rotates, while the wire is stationary; when the magnet rotates, the magnet moves relative to the conducting wire, and the conducting wire cuts magnetic field lines to generate induced current. The rubber ring used by the shield machine is of a lip-shaped structure, a certain included angle a is formed between the rubber ring and the movement of the magnet, and the generated induced current is I as known from a current induction formula I (BLVsina).
The overall effect cross-sectional view of the shield tunneling machine shown in fig. 3 includes a runway 1 in the main drive, and the runway rotates when the device operates normally; an N pole 2 of a magnet fixed on the runway; the thin wire on the lip-shaped rubber ring is led out of the equipment from the hole in a punching mode and is connected with the micro-current acquisition module; an S pole 4 of a magnet fixed on the runway; the lip-shaped ring 5 is internally provided with circular grooves with the same distance and different diameters, namely a groove ring, and is static when the equipment works. The thin wires 3 are regularly arranged on the rubber ring at equal intervals, and the two ends of each wire cut the magnetic field lines to generate current; a microcurrent collection module 7, which is placed outside the device. And after the collected current value is processed by an algorithm, reporting the current value to an upper computer to judge the abrasion condition of the sealing ring.
Further, when the shield tunneling machine normally operates, the runway 1 rotates and moves relative to the lip of the lip ring 5, and as can be seen from fig. 3, two ends of the wire form a certain included angle a with the moving direction of the magnetic field. According to faraday's law of electromagnetic induction, the effective length of the wire that cuts the magnetic field lines is L × sina, and the induced current generated is I ═ BLVsina. When the thin wire is worn off, the circuit cannot form a closed loop, the current is 0, the rubber ring is known to be worn, meanwhile, the wear amount of the rubber ring is judged according to the position of the worn-off thin wire, for example, when the system detects that the current on the first wire counted from the lip edge of the rubber ring is 0, the wire is considered to be worn off, the rubber ring is worn by 1MM, and the like.
In this embodiment, as shown in fig. 4, a top view of the lip ring, a groove ring is dug at a certain width and depth from the lip at the lip ring in consideration of the convenience of production, and the width of the groove determines the maximum wear amount of the detectable rubber ring. In fig. 4, 41 and 42 are two sides of the ring shape of the groove on the lip-shaped sealing ring, and 41 is also the lip edge of the lip-shaped sealing ring; 43 and 44 are wire leading-out grooves with upper and lower symmetrical axes, which are used for leading out the wires from the equipment, and the wires in the grooves can cut magnetic field lines to generate induced current.
Wherein, a thin wire with a total width of 30AWG-6P of 6MM is taken at present, the wire is wound around two semicircular rings which are symmetrical left and right along the sealing ring groove, two ends of the wire are respectively led out of the equipment from the wire leading-out groove and are fixed and protected by special glue, and the effect schematic diagram is shown in figure 5. The layout in this manner is to maximize the effective length of the wire-cut magnetic field lines, and is not limited to increasing the length of the wire-cut magnetic field lines in other manners. Specifically, the glue can be common glue with fixing and protecting functions.
Further, the micro-current collection module is connected with the thin wire through the shielded wire, and the connection schematic diagram is shown in fig. 6; as can be seen from the figure, for a circle, the lip edge of the lip ring is formed by winding two wires, that is, within a certain time, as long as the current of one of the wires is detected to be 0, it can be determined that the wire is worn off, and the lip ring is worn.
In order to make the wire on the lip ring cut the magnetic field, two magnets 2 and 4 are mounted on the runway, and the magnets are symmetrical up and down. The cross section of the runway and the lip ring is shown in fig. 7, and it can be seen from the figure that the N pole and the S pole of the same magnet are axially symmetrical, and the two magnets are vertically symmetrical. The upper left part is the N pole 2 of the magnet, the upper right part is the S pole 4 of the magnet; and the lower left part is the S pole of the magnet and the lower right part is the N pole of the magnet; the length of the magnet is L; the runway 1, when the runway rotates, 31 and 32 are wires, which cut the magnetic field lines and generate induced current.
Further, when the lip-shaped ring is erected, the wire on the top cuts the magnetic field lines in the magnetic field schematically shown in fig. 8, and the method comprises the following steps: the magnetic field 81 that lip-shaped sealing washer 5, magnet produced, wire 3 on the lip-shaped sealing washer, runway 1. When the runway rotates clockwise, the direction of the generated current is downward according to the right-hand rule; the moving direction of the lead on the bottom is opposite to that of the lead on the top, and the direction of the magnetic field is also opposite to that of the magnetic field on the top, so that the direction of induced current generated when the lead on the bottom is used for cutting the magnetic field is downward according to the right-hand rule, the current on the whole lead is increased, and the collection of the current is facilitated.
Furthermore, because the magnet is symmetrical up and down in the center, the length of the magnet is less than or equal to half of the perimeter of the lip-shaped sealing ring. When the length of the magnet is equal to half of the perimeter of the lip-shaped ring, the conducting wire continuously cuts the magnetic field lines to move, so that induced current exists all the time, and the induced current disappears after the conducting wire is worn off. When the length of the magnet is less than the circumference of the lip-shaped seal ring, the induced current generated appears and disappears at certain time intervals. Assuming that the runway rotation speed is V, the circumference of the lip-shaped sealing ring is S, and the time T2 of one rotation is S/V; the current disappearance time T1 ═ S-2L)/2/V. That is, during time T2, the induced current appears for a time period of T2-T1.
In conclusion, the magnet on the runway generates a magnetic field, when the runway runs, the magnet moves relative to the wire on the sealing ring, the wire performs cutting magnetic field movement to generate induction current, the current of the wire is collected through the tiny current collecting module, and if the collected current is 0 all the time, the wire can be known to be broken, the wear loss is converted into the wear loss according to the position of the wire, and the wear loss is reported to an upper computer which displays the wear loss and reminds an operator to replace the sealing ring in time.
In addition, the current acquisition module is arranged outside the equipment, the module can be integrated and miniaturized, and the module is arranged in the rubber ring, so that wiring is reduced. At present, the invention installs two magnets which are symmetrical up and down in the center on the runway, and can also install other numbers of magnets. The invention does not limit the communication mode of the current acquisition module and the upper computer, and can use wireless or wired communication. The grooves are not required to be dug on the rubber ring, and the flat cable bag can be embedded in the rubber ring when the technology is mature.
The method takes the magnetic generating principle as a starting point, and realizes accurate online real-time detection of the wear amount of the lip ring of the shield machine by acquiring the induced current of the lip ring in real time and determining the wear condition of the lip ring by using the induced current of the lip ring, thereby ensuring that an operator can know the wear condition of the lip ring of the shield machine in time and providing a guarantee for the sealing property of the shield machine.
Fig. 9 is a schematic structural diagram of a wear detection device for a lip ring of a shield machine according to an embodiment of the present invention, where the device includes:
an induction current module 10 for obtaining a plurality of lip coil induction currents; the induced current of the lip-shaped ring is generated by cutting a runway magnetic field through a lead arranged on the lip-shaped ring of the shield machine;
the lead position module 20 is used for determining the position of a broken lead on the lip ring of the shield machine according to the induced current of the lip ring;
and the abrasion result module 30 is used for determining the abrasion result of the lip ring of the shield machine according to the position of the broken lead on the lip ring of the shield machine.
As an embodiment of the present invention, as shown in fig. 10, the wire position module 20 includes:
the current value unit 21 is configured to determine whether a time during which a current value continues to be zero exceeds a preset time threshold if the current value of the current induced by the lip-shaped coil is zero;
and the worn lead unit 22 is used for taking the lead corresponding to the lip-shaped coil induced current with the continuous zero current value as a worn-off lead when the time for which the current value is continuously zero exceeds a preset time threshold value, and determining the position of the worn-off lead by utilizing the worn-off lead.
As an embodiment of the present invention, as shown in fig. 11, the apparatus further includes a wear warning module 40, configured to generate wear warning information according to a wear result of the lip ring of the shield tunneling machine.
Based on the same application concept as the method for detecting the wear of the lip ring of the shield machine, the invention also provides the device for detecting the wear of the lip ring of the shield machine. The principle of solving the problems of the shield machine lip ring abrasion detection device is similar to that of a shield machine lip ring abrasion detection method, so the implementation of the shield machine lip ring abrasion detection device can refer to the implementation of the shield machine lip ring abrasion detection method, and repeated parts are not described again.
The method takes the magnetic generating principle as a starting point, and realizes accurate online real-time detection of the wear amount of the lip ring of the shield machine by acquiring the induced current of the lip ring in real time and determining the wear condition of the lip ring by using the induced current of the lip ring, thereby ensuring that an operator can know the wear condition of the lip ring of the shield machine in time and providing a guarantee for the sealing property of the shield machine.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method when executing the program.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
As shown in fig. 12, the electronic device 600 may further include: communication module 110, input unit 120, audio processing unit 130, display 160, power supply 170. It is noted that the electronic device 600 does not necessarily include all of the components shown in FIG. 12; furthermore, the electronic device 600 may also comprise components not shown in fig. 12, which may be referred to in the prior art.
As shown in fig. 12, the central processor 100, sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device, the central processor 100 receiving input and controlling the operation of the various components of the electronic device 600.
The memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information relating to the failure may be stored, and a program for executing the information may be stored. And the central processing unit 100 may execute the program stored in the memory 140 to realize information storage or processing, etc.
The input unit 120 provides input to the cpu 100. The input unit 120 is, for example, a key or a touch input device. The power supply 170 is used to provide power to the electronic device 600. The display 160 is used to display an object to be displayed, such as an image or a character. The display may be, for example, an LCD display, but is not limited thereto.
The memory 140 may be a solid state memory such as Read Only Memory (ROM), Random Access Memory (RAM), a SIM card, or the like. There may also be a memory that holds information even when power is off, can be selectively erased, and is provided with more data, an example of which is sometimes referred to as an EPROM or the like. The memory 140 may also be some other type of device. Memory 140 includes buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application/function storage section 142 for storing application programs and function programs or a flow for executing the operation of the electronic device 600 by the central processing unit 100.
The memory 140 may also include a data store 143, the data store 143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by the electronic device. The driver storage portion 144 of the memory 140 may include various drivers of the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging application, address book application, etc.).
The communication module 110 is a transmitter/receiver 110 that transmits and receives signals via an antenna 111. The communication module (transmitter/receiver) 110 is coupled to the central processor 100 to provide an input signal and receive an output signal, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, may be provided in the same electronic device. The communication module (transmitter/receiver) 110 is also coupled to a speaker 131 and a microphone 132 via an audio processor 130 to provide audio output via the speaker 131 and receive audio input from the microphone 132 to implement general telecommunications functions. Audio processor 130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, an audio processor 130 is also coupled to the central processor 100, so that recording on the local can be enabled through a microphone 132, and so that sound stored on the local can be played through a speaker 131.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for detecting wear of a lip ring of a shield tunneling machine is characterized by comprising the following steps:
acquiring a plurality of lip-shaped coil induced currents; the lip-shaped ring induction current is generated by cutting a runway magnetic field through a lead arranged on a lip-shaped ring of the shield machine;
determining the position of a broken lead on the lip ring of the shield machine according to the induced current of the lip ring;
and determining the abrasion result of the lip ring of the shield machine according to the position of the broken lead on the lip ring of the shield machine.
2. The method of claim 1, wherein determining a location of a worn-out conductor on the shield machine lip based on the lip coil induced current comprises:
if the current value of the induced current of the lip-shaped ring is zero, judging whether the time that the current value is continuously zero exceeds a preset time threshold value;
and if the current value of the lead wire exceeds the preset value, taking the lead wire corresponding to the lip-shaped coil induced current with the continuous zero current value as a grinding lead wire, and determining the position of the grinding lead wire by utilizing the grinding lead wire.
3. The method of claim 1, further comprising: and generating wear early warning information according to the wear result of the lip-shaped ring of the shield machine.
4. A shield constructs quick-witted lip circle wear detection device, its characterized in that, the device includes:
the induction current module is used for acquiring a plurality of lip-shaped coil induction currents; the lip-shaped ring induction current is generated by cutting a runway magnetic field through a lead arranged on a lip-shaped ring of the shield machine;
the lead position module is used for determining the position of a broken lead on the lip ring of the shield machine according to the induced current of the lip ring;
and the abrasion result module is used for determining the abrasion result of the lip ring of the shield machine according to the position of the broken lead on the lip ring of the shield machine.
5. The apparatus of claim 4, wherein the wire position module comprises:
the current value unit is used for judging whether the time that the current value is continuously zero exceeds a preset time threshold value or not if the current value of the induced current of the lip-shaped ring is zero;
and the worn lead unit is used for taking a lead corresponding to the lip-shaped ring induced current with the continuous zero current value as a worn-off lead when the time for which the current value is continuously zero exceeds a preset time threshold value, and determining the position of the worn-off lead by utilizing the worn-off lead.
6. The device of claim 4, further comprising a wear warning module configured to generate wear warning information according to a wear result of the shield machine lip ring.
7. A shield tunneling machine, comprising: the magnetic sensor comprises a runway, a lip-shaped ring, a lead and two magnets;
the two magnets are arranged on the runway; a plurality of groove rings are uniformly arranged on the lip-shaped ring, the groove rings are used for placing the lead, and the groove rings are positioned between the two magnets;
the shield machine is connected with an upper computer, after the runway rotates, a lead in the shield machine generates lip-shaped ring induction current through magnetic induction lines generated by cutting two magnets, and the lip-shaped ring induction current is transmitted to the upper computer for abrasion detection processing.
8. The shield machine of claim 7, further comprising a micro-current collection module for collecting the lip coil induced current and transmitting the lip coil induced current to an upper computer.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 3 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210437986.3A CN114858045A (en) | 2022-04-25 | 2022-04-25 | Method and device for detecting abrasion of lip-shaped ring of shield machine and shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210437986.3A CN114858045A (en) | 2022-04-25 | 2022-04-25 | Method and device for detecting abrasion of lip-shaped ring of shield machine and shield machine |
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| CN114858045A true CN114858045A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210437986.3A Pending CN114858045A (en) | 2022-04-25 | 2022-04-25 | Method and device for detecting abrasion of lip-shaped ring of shield machine and shield machine |
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| CN113464655A (en) * | 2021-06-23 | 2021-10-01 | 西安交通大学 | Shield machine and main drive seal and method capable of detecting abrasion loss on line |
| CN113653802A (en) * | 2021-08-17 | 2021-11-16 | 中铁工程装备集团有限公司 | Sealing ring capable of monitoring sealing abrasion loss on line and shield machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004143693A (en) * | 2002-10-22 | 2004-05-20 | Shimizu Corp | Tail seal of shield machine and its wear and tear detection method |
| CN107036564A (en) * | 2017-06-08 | 2017-08-11 | 四川汇智众创科技有限公司 | A kind of shield machine roller cutter abrasion amount detecting device |
| CN206959810U (en) * | 2017-06-08 | 2018-02-02 | 四川汇智众创科技有限公司 | A kind of shield machine roller cutter wears amount detecting device |
| CN113464655A (en) * | 2021-06-23 | 2021-10-01 | 西安交通大学 | Shield machine and main drive seal and method capable of detecting abrasion loss on line |
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