CN114812366A - Method and device for detecting abrasion of lip-shaped sealing ring of shield machine and shield machine - Google Patents
Method and device for detecting abrasion of lip-shaped sealing ring of shield machine and shield machine Download PDFInfo
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- 238000007789 sealing Methods 0.000 title claims abstract description 120
- 238000005299 abrasion Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 36
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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Abstract
The invention provides a method and a device for detecting wear of a lip-shaped sealing ring of a shield machine and the shield machine, wherein the method comprises the following steps: acquiring resistance strain values of a plurality of sealing rings; the seal ring resistance strain value is generated by a plurality of resistance strain sheets arranged on the lip-shaped seal ring of the shield machine; determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing the corresponding relation between the preset abrasion loss and the strain value according to the resistance strain value of the sealing ring; and obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion amount of the corresponding position of each resistance strain gauge. According to the invention, the resistance strain gauge is arranged on the lip-shaped sealing ring of the shield machine, and the wear condition of the lip-shaped sealing ring of the shield machine is detected by using the acquired strain value, so that the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the wear loss of the rubber ring is accurately and directly measured, and the condition that the sealing performance is damaged is efficiently prevented.
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 sealing ring of a shield machine and the shield machine.
Background
The sealing performance is one of key performance indexes for the main driving of the shield machine, and the quality of the sealing performance directly determines whether the shield machine can drive or not. The shield machine main drive tightness mainly comprises a lip-shaped ring and a runway, and due to relative movement between the lip-shaped ring and the runway, abrasion of the lip-shaped ring is unavoidable, so that the tightness is damaged, cement, sand, soil and stone enter the main drive, the main bearing is damaged, and the shield machine is stopped. How to effectively prevent the damage of the sealing performance of the main driving is a technical barrier for the development of the current shield tunneling machine.
In recent years, with the development of electronic technology, methods from off-line detection of wear of lip-shaped rings to on-line real-time detection of wear of rubber rings are emerging. 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. The method for detecting the abrasion loss of the lip-shaped ring on line recently comprises the steps that a pressure sensor with an elastic seat is installed on a runway, the pressure of the lip-shaped ring on the runway is continuously changed due to the abrasion of the lip-shaped ring, the abrasion loss of a rubber ring is judged according to the change, and the problem that whether the sealing performance is damaged or not cannot be guaranteed in the actual process due to the fact that the sensor is installed on the runway, and the processing difficulty is high is solved.
At present, a lip-shaped ring abrasion loss measuring method is not developed yet. Therefore, it is necessary to design a method for detecting the abrasion loss of the rubber ring on line in real time.
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 sealing ring of a shield machine and the shield machine, so that the wear condition of the lip-shaped sealing ring of the shield machine can be accurately detected in real time.
In order to achieve the above object, an embodiment of the present invention provides a method for detecting wear of a lip seal ring of a shield machine, where the method includes:
acquiring resistance strain values of a plurality of sealing rings; the seal ring resistance strain value is generated by a plurality of resistance strain sheets arranged on the lip-shaped seal ring of the shield machine;
determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing the corresponding relation between the preset abrasion loss and the strain value according to the resistance strain value of the sealing ring;
and obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion amount of the corresponding position of each resistance strain gauge.
Optionally, in an embodiment of the present invention, the correspondence between the wear loss and the strain value is pre-established in the following manner:
acquiring strain data of a plurality of sealing rings by using a strain acquisition instrument; the seal ring strain data is generated by a resistance strain gauge arranged on the lip-shaped seal ring of the shield machine;
and acquiring the abrasion loss corresponding to the strain data of each sealing ring, and determining the corresponding relation between the abrasion loss and the strain value according to the strain data of the sealing ring and the abrasion loss corresponding to the strain data.
Optionally, in an embodiment of the present invention, the method further includes: and carrying out filtering treatment on the resistance strain value of the sealing ring by using a digital filtering algorithm.
The embodiment of the invention also provides a device for detecting the abrasion of the lip-shaped sealing ring of the shield machine, which comprises:
the resistance strain value module is used for acquiring a plurality of seal ring resistance strain values; the seal ring resistance strain value is generated by a plurality of resistance strain sheets arranged on the lip-shaped seal ring of the shield machine;
the abrasion loss module is used for determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing the corresponding relation between the preset abrasion loss and the strain value according to the resistance strain value of the sealing ring;
and the abrasion result module is used for obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion amount of the corresponding position of each resistance strain gauge.
An embodiment of the present invention further provides a shield tunneling machine, including: a runway, a strain acquisition instrument and a lip-shaped sealing ring;
the lip-shaped sealing ring is movably connected with the runway, and comprises a sealing ring main body and a plurality of resistance strain gauges;
the resistance strain gauge is arranged on the sealing ring main body and is connected with the strain acquisition instrument;
the strain acquisition instrument is connected with an external upper computer and used for acquiring strain signals of the resistance strain gauge and sending the strain signals to the upper computer.
Optionally, in an embodiment of the present invention, the shield machine further includes a network cable, and the network cable is disposed between the strain acquisition instrument and the upper computer.
Optionally, in an embodiment of the present invention, the resistance strain gauge is disposed on an outer side surface of the lip portion of the seal ring main body.
Optionally, in an embodiment of the present invention, the lip seal further includes a shielding wire, and the shielding wire is disposed between the strain acquisition instrument and the resistance strain gauge.
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.
According to the invention, the resistance strain gauge is arranged on the lip-shaped sealing ring of the shield machine, and the wear condition of the lip-shaped sealing ring of the shield machine is detected by using the acquired strain value, so that the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the wear loss of the rubber ring is accurately and directly measured, and the condition that the sealing performance is damaged is efficiently prevented.
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 seal ring of a shield machine according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating the establishment of a relationship between wear and strain values according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a shield tunneling machine according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a resistance strain gauge in an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a comparison of a lip seal prior to installation and after installation in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a comparison of a lip seal before and after wear in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a wear detection device for a lip seal ring of a shield tunneling machine according to an embodiment of the present invention;
fig. 8 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 abrasion of a lip-shaped sealing 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1, a flowchart of a method for detecting wear of a lip seal 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 seal 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 seal ring resistance strain values; the seal ring resistance strain value is generated by a plurality of resistance strain sheets arranged on the lip-shaped seal ring of the shield machine;
step S2, determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing the corresponding relation between the preset abrasion loss and the strain value according to the resistance strain value of the sealing ring;
and step S3, obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion amount of the corresponding position of each resistance strain gauge.
The invention can measure the deformation of the lip-shaped sealing ring by the strain gauge adhered on the lip-shaped sealing ring, and can more directly and accurately measure the abrasion loss of the lip-shaped sealing ring according to the strain generated by the interaction of the lip-shaped sealing ring on a runway, which is different from the condition of measuring the pressure between the lip-shaped sealing ring and the runway by using a pressure sensor.
Furthermore, a resistance strain gauge is attached to the lip-shaped sealing ring, a hole is formed in the position close to the position where the sealing ring is installed, and a strain gauge connecting wire is led out of the equipment through a lead with a shield. When the equipment is operated, because the sealing washer and the runway long-time relative motion, the sealing washer is difficult to avoid taking place wearing and tearing, and the back of wearing and tearing, the sealing washer produces certain deformation, and the deformation data that meets an emergency acquisition appearance will gather are uploaded to the host computer, and the host computer is after processing data through intelligent algorithm, with the wearing and tearing volume of meeting an emergency data conversion rubber circle to show on the display.
Further, after the upper computer obtains a plurality of seal ring resistance strain values, the abrasion loss corresponding to the current seal ring resistance strain value, namely the abrasion loss of the corresponding position of each resistance strain gauge, is determined according to the corresponding relation between the preset abrasion loss and the strain value. According to different actual working condition requirements, different abrasion amounts can be divided into different abrasion results, including slight abrasion, ordinary abrasion and severe abrasion.
Furthermore, the abrasion amount of the corresponding position of each resistance strain gauge can reflect the abrasion condition of the corresponding position, and the abrasion result of the lip-shaped sealing ring of the shield machine can be comprehensively obtained by counting the abrasion condition of the corresponding position of each resistance strain gauge. Specifically, if a certain position is seriously worn, the lip-shaped sealing ring of the shield machine is seriously worn as a result of the wear. And the position where the serious abrasion occurs is accurately positioned, and the processing efficiency of the operating personnel is improved.
In addition, 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 tunneling machine can be avoided in time.
As an embodiment of the present invention, as shown in fig. 2, the correspondence relationship between the wear amount and the strain value is previously established by:
step S21, collecting strain data of a plurality of sealing rings by using a strain collector; the seal ring strain data is generated by a resistance strain gauge arranged on the lip-shaped seal ring of the shield machine;
and step S22, acquiring the abrasion loss corresponding to the strain data of each sealing ring, and determining the corresponding relation between the abrasion loss and the strain value according to the strain data of the sealing ring and the abrasion loss corresponding to the strain data.
Wherein, in a certain range, the larger the abrasion loss, the larger the strain of the seal ring. The resistance strain gauge is adhered to the sealing ring, the strain acquisition instrument acquires the strain on the sealing ring in real time, the abrasion loss D1 of the sealing ring is measured at intervals of T time of the equipment, the strain value x at the moment is recorded, and N groups of values corresponding to the abrasion loss and the strain value are obtained through N times of measurement. Fitting the data of the N groups of abrasion loss and strain values to obtain a mathematical relation between the abrasion loss and the strain values, which can be expressed as: d ═ ax 3 +bx 2 + cx + m, where D is the amount of wear, x is the resistance strain value, and a, b, c, and m are coefficients. The mathematical formula is realized on the upper computer, and the abrasion loss of the position of the seal ring strain gauge can be known by substituting the acquired strain data into the formula.
As an embodiment of the invention, the method further comprises: and carrying out filtering treatment on the resistance strain value of the sealing ring by using a digital filtering algorithm.
In practical application, the data collected by the strain acquisition instrument is invalid or abnormal in consideration of disturbance or interference of other factors. At this time, a digital filtering algorithm is required to be added, interference data of the digital filtering algorithm is removed to avoid misjudgment, and then the resistance strain value is substituted into a mathematical relation formula of the abrasion loss and the strain value.
According to the invention, the resistance strain gauge is arranged on the lip-shaped sealing ring of the shield machine, and the wear condition of the lip-shaped sealing ring of the shield machine is detected by using the acquired strain value, so that the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the wear loss of the rubber ring is accurately and directly measured, and the condition that the sealing performance is damaged is efficiently prevented.
Fig. 3 is a schematic structural diagram of a shield machine according to an embodiment of the present invention, where the shield machine includes: the device comprises a runway 1, a strain acquisition instrument 2 and a lip-shaped sealing ring 3;
the lip-shaped sealing ring 3 is movably connected with the runway 1, and the lip-shaped sealing ring 3 comprises a sealing ring main body 31 and a plurality of resistance strain gauges 32;
the resistance strain gauge 32 is arranged on the sealing ring main body 31, and the resistance strain gauge 32 is connected with the strain acquisition instrument 2;
the strain acquisition instrument 2 is connected with an external upper computer and used for acquiring a strain signal of the resistance strain gauge 32 and sending the strain signal to the upper computer.
As an embodiment of the present invention, the shield machine further includes a network cable 5, and the network cable is disposed between the strain acquisition instrument 2 and the upper computer.
As an embodiment of the present invention, the resistance strain gauge 32 is provided on the outer surface of the lip portion of the seal ring main body 31.
As an embodiment of the present invention, the lip seal further includes a shield wire 4, and the shield wire 4 is disposed between the strain gauge 2 and the resistance strain gauge 32.
In the present embodiment, the resistance strain gauge is used to convert the amount of deformation of the lip seal into a change in resistance; the strain acquisition instrument is used for measuring the strain value of the lip-shaped ring; the shielded lead is used for connecting the resistance strain gauge with the acquisition instrument; PC-real-time monitoring the abrasion loss of the lip-shaped ring; the network cable is used for communication between the analyzer and the PC; the wear amount of the lip seal is determined by attaching a resistance strain gauge to the lip seal and measuring the strain of the lip seal using the resistance strain gauge.
The invention utilizes the resistance strain gauge to measure the deformation of the sealing ring, and deduces the abrasion loss of the sealing ring. The general schematic diagram is shown in FIG. 3; the components of the device comprise: the shield tunneling machine comprises a resistance strain gauge 32, a lip-shaped sealing ring 3 driven by a shield tunneling machine owner, a lead 4 with a shield, a strain acquisition instrument 2, a network cable 5 and an upper computer 6. The resistance strain gauge 32 is attached to the lip seal main body 31, a hole is punched in the vicinity of the position where the lip seal is attached, and the strain gauge connection line is led out of the apparatus through the shielded lead wire 4. When the equipment is operated, because lip-shaped sealing ring 3 and runway 1 long-time relative motion, lip-shaped sealing ring 3 is difficult to avoid taking place wearing and tearing, and the back of wearing and tearing, the sealing washer produces certain deformation, and strain acquisition appearance 2 uploads the deformation data of gathering to the host computer, and host computer PC is after processing data through intelligent algorithm, changes the wearing and tearing volume of lip-shaped sealing ring with strain data to show on the display.
Further, the lip-shaped sealing ring is arranged in the front and back of the device, and the shape is shown in a comparison schematic diagram 5 and fig. 6; in the figure, 101 is the shape of the seal ring in a natural state, 102 is the shape of the seal ring after being installed in the equipment, and 103 is the shape of the seal ring after being worn, and as seen from 101 and 102, the seal ring is bent and deformed after being installed, has a certain amount of compression, and gradually disappears as the seal ring is worn.
As shown in fig. 5, 102 represents a compression amount of about 3 MM to 4MM after the lip seal is mounted, compared with the original shape 101 of the lip seal. As the lip seal moves relative to the race, the lip seal wears away and the amount of compression is gradually reduced, and finally the lip seal is shown as 103 in fig. 6. That is, as the equipment is operated, the lip seal is gradually reduced from the initial maximum compression amount, and the strain is reduced accordingly. And the strain acquisition instrument judges the wear degree of the lip-shaped sealing ring according to the strain change of the lip-shaped sealing ring.
The wear degree of the lip-shaped sealing ring is detected in real time by measuring the strain of the lip-shaped sealing ring in real time. The invention provides an effective detection means for detecting the integrity of the lip-shaped sealing ring and the main drive sealing performance in real time, and also becomes a possibility for efficiently preventing the sealing performance from being damaged.
In this embodiment, regarding the installation of the resistance strain gauge, since the lip-shaped sealing ring is made of rubber, and the diameter of the lip-shaped sealing ring used in the shield tunneling machine is generally large, the length of the selected strain gauge is not easy to be too long, otherwise the strain gauge is easy to break. In order to measure the wear of the lip-shaped sealing ring more accurately, the number of the adhered resistance strain gauges needs to be evaluated according to the diameter of the lip-shaped sealing ring, and the sealing ring with the diameter of 1M is taken as an example for explanation; the length of the resistance strain gauge used in the invention is 30MM, and in view of the sensitivity limit of the resistance strain gauge, the distance between every two resistance strain gauges is 20MM, namely 63 resistance strain gauges are required to be pasted. How to mount the strain gauge will be described by taking a resistance strain gauge as an example, and the effect of mounting the strain gauge on the lip-shaped sealing ring is shown in fig. 4. After the strain gauge is flatly stuck on the lip-shaped sealing ring by using glue, the surface layer of the strain gauge is coated by using special glue for protection. And then the resistance strain gauge is connected with the strain acquisition instrument 2 by a three-wire connection method by using a lead wire 4 with a shield, and the strain acquisition instrument 2 is connected with a PC (personal computer) by an Ethernet.
The lip-shaped sealing ring is characterized in that strain data and abrasion loss corresponding relations of the lip-shaped sealing ring are obtained, and in a certain range, the larger the abrasion loss is, the larger the strain of the sealing ring is. The resistance strain gauge is pasted on the lip-shaped sealing ring, the strain acquisition instrument acquires the strain on the lip-shaped sealing ring in real time, the sealing ring abrasion loss D1 is manually measured every time T, the strain value x at the moment is recorded, and the values corresponding to N groups of abrasion losses and strain values are obtained through N times of measurement. Fitting the data of the N groups of abrasion loss and strain values to obtain a mathematical relation between the abrasion loss and the strain values, wherein D is ax 3 +bx 2 + cx + m. The mathematical formula is realized on the upper computer, and the wear loss of the position of the lip-shaped sealing ring strain gauge can be known by substituting the acquired strain data into the formula.
Furthermore, in practical application, in consideration of disturbance or interference of other factors, data acquired by the strain acquisition instrument is invalid or abnormal, at this time, a digital filtering algorithm needs to be added to remove the interference data so as to avoid misjudgment, and then the strain value is substituted into a mathematical relation formula of the abrasion loss and the strain value.
Furthermore, after the abrasion loss is obtained, the abrasion loss is displayed on the interface of the upper computer 6, when certain abrasion is generated, a worker is prompted, and after the worker confirms the abrasion loss, the prompt disappears. The abrasion condition of the sealing ring can be known by workers in time to replace the sealing ring, and the condition that sand, soil, water and stones enter the main drive to damage the main bearing is avoided.
In addition, the invention communicates with the upper computer PC through a wired mode, and can also be replaced by wireless communication, thereby reducing wiring and saving cost.
According to the invention, the resistance strain gauge is arranged on the lip-shaped sealing ring of the shield machine, and the wear condition of the lip-shaped sealing ring of the shield machine is detected by using the acquired strain value, so that the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the wear loss of the rubber ring is accurately and directly measured, and the condition that the sealing performance is damaged is efficiently prevented.
Fig. 7 is a schematic structural diagram of a wear detection device for a lip seal ring of a shield machine according to an embodiment of the present invention, where the device includes:
the resistance strain value module 10 is used for acquiring a plurality of seal ring resistance strain values; the seal ring resistance strain value is generated by a plurality of resistance strain sheets arranged on the lip-shaped seal ring of the shield machine;
the abrasion loss module 20 is used for determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing the corresponding relation between the preset abrasion loss and the strain value according to the resistance strain value of the seal ring;
and the abrasion result module 30 is used for obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion amount of the corresponding position of each resistance strain gauge.
Based on the same application concept as the method for detecting the wear of the lip-shaped sealing ring of the shield machine, the invention also provides a device for detecting the wear of the lip-shaped sealing ring of the shield machine. The principle of solving the problems of the shield machine lip seal ring abrasion detection device is similar to that of a shield machine lip seal ring abrasion detection method, so that the shield machine lip seal ring abrasion detection device can be implemented by the shield machine lip seal ring abrasion detection method, and repeated parts are not repeated.
According to the invention, the resistance strain gauge is arranged on the lip-shaped sealing ring of the shield machine, and the wear condition of the lip-shaped sealing ring of the shield machine is detected by using the acquired strain value, so that the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the wear loss of the rubber ring is accurately and directly measured, and the condition that the sealing performance is damaged is efficiently prevented.
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. 8, 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. 8; furthermore, the electronic device 600 may also comprise components not shown in fig. 8, which may be referred to in the prior art.
As shown in fig. 8, 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 called 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, and the application/function storage section 142 is used to store 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 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-shaped sealing ring of a shield machine is characterized by comprising the following steps:
acquiring resistance strain values of a plurality of sealing rings; the seal ring resistance strain value is generated by a plurality of resistance strain sheets arranged on the lip-shaped seal ring of the shield machine;
determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing the corresponding relation between the preset abrasion loss and the strain value according to the resistance strain value of the sealing ring;
and obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion amount of the corresponding position of each resistance strain gauge.
2. The method according to claim 1, wherein the correspondence relationship of the wear amount to the strain value is previously established by:
acquiring strain data of a plurality of sealing rings by using a strain acquisition instrument; the seal ring strain data are generated through a resistance strain gauge arranged on a lip-shaped seal ring of the shield machine;
and acquiring the abrasion loss corresponding to the strain data of each sealing ring, and determining the corresponding relation between the abrasion loss and the strain value according to the strain data of the sealing ring and the abrasion loss corresponding to the strain data.
3. The method of claim 1, further comprising: and carrying out filtering treatment on the seal ring resistance strain value by using a digital filtering algorithm.
4. The utility model provides a shield constructs quick-witted lip seal circle wearing and tearing detection device which characterized in that, the device includes:
the resistance strain value module is used for acquiring a plurality of seal ring resistance strain values; the seal ring resistance strain value is generated by a plurality of resistance strain sheets arranged on the lip-shaped seal ring of the shield machine;
the abrasion loss module is used for determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing the corresponding relation between the preset abrasion loss and the strain value according to the resistance strain value of the sealing ring;
and the abrasion result module is used for obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion amount of the corresponding position of each resistance strain gauge.
5. A shield tunneling machine, comprising: a runway, a strain acquisition instrument and a lip-shaped sealing ring;
the lip-shaped sealing ring is movably connected with the runway, and comprises a sealing ring main body and a plurality of resistance strain gauges;
the resistance strain gauge is arranged on the sealing ring main body and is connected with the strain acquisition instrument;
the strain acquisition instrument is connected with an external upper computer and is used for acquiring the strain signal of the resistance strain gauge and sending the strain signal to the upper computer.
6. The shield tunneling machine of claim 5, further comprising a network cable disposed between the strain gauge and the upper machine.
7. The shield machine of claim 5, wherein the resistance strain gauge is disposed on an outer surface of a lip portion of the seal ring body.
8. The shield machine of claim 5, wherein the lip seal further includes a shield wire disposed between the strain gauge and the resistive strain gage.
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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210438415.1A CN114812366A (en) | 2022-04-25 | 2022-04-25 | Method and device for detecting abrasion of lip-shaped sealing ring of shield machine and shield machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210438415.1A CN114812366A (en) | 2022-04-25 | 2022-04-25 | Method and device for detecting abrasion of lip-shaped sealing ring of shield machine and shield machine |
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| CN114812366A true CN114812366A (en) | 2022-07-29 |
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| CN202210438415.1A Pending CN114812366A (en) | 2022-04-25 | 2022-04-25 | Method and device for detecting abrasion of lip-shaped sealing ring of shield machine and shield machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117091831A (en) * | 2023-10-20 | 2023-11-21 | 南京专注智能科技股份有限公司 | Sealing rubber ring performance detection device for tobacco fermentation tank and working method |
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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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| CN201122132Y (en) * | 2007-12-03 | 2008-09-24 | 河北科技大学 | Sealing ring friction performance testing device |
| DE102016214942A1 (en) * | 2015-08-11 | 2017-02-16 | Aktiebolaget Skf | A lip seal and method for determining a condition of a lip seal or unit sealed by the lip seal |
| CN105698981A (en) * | 2016-01-13 | 2016-06-22 | 西安理工大学 | Sensor used for measuring revolute pair counterforce |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117091831A (en) * | 2023-10-20 | 2023-11-21 | 南京专注智能科技股份有限公司 | Sealing rubber ring performance detection device for tobacco fermentation tank and working method |
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