CN114812366B - Shield machine lip seal ring abrasion detection method and device and shield machine - Google Patents
Shield machine lip seal ring abrasion detection method and device and shield machine Download PDFInfo
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- CN114812366B CN114812366B CN202210438415.1A CN202210438415A CN114812366B CN 114812366 B CN114812366 B CN 114812366B CN 202210438415 A CN202210438415 A CN 202210438415A CN 114812366 B CN114812366 B CN 114812366B
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- 238000005299 abrasion Methods 0.000 title claims abstract description 133
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 144
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000004590 computer program Methods 0.000 claims description 14
- 230000005641 tunneling Effects 0.000 claims description 9
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Classifications
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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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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a shield machine lip seal ring abrasion detection method and device and a shield machine, wherein the method comprises the following steps: obtaining resistance strain values of a plurality of sealing rings; the sealing ring resistance strain value is generated by a plurality of resistance strain pieces arranged on the lip-shaped sealing ring of the shield machine; determining the abrasion loss of the corresponding positions of each resistance strain gauge by utilizing the preset corresponding relation between the 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 quantity 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, the abrasion condition of the lip-shaped sealing ring of the shield machine is detected by utilizing the acquired strain value, the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the abrasion loss of the rubber ring is accurately and directly measured, and the situation that the sealing performance is damaged is effectively 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 tightness is one of the key performance indexes for the main driving of the shield machine, and the quality of the tightness directly determines whether the shield machine can drive. The main driving tightness of the shield machine mainly comprises a lip ring and a runway, and the abrasion of the lip ring is unavoidable due to the relative movement between the lip ring and the runway, so that the tightness is damaged, cement, sandy soil and stone enter the main driving, the main bearing is damaged, and the shield machine is stopped. How to effectively prevent the damage of the main driving tightness is a technical barrier for the development of the prior shield machine.
In recent years, with the development of electronic technology, a method from offline detection of wear of a lip-type ring to online real-time detection of wear of a rubber ring is continuously emerging. The current common sealing state detection method is to indirectly judge the sealing integrity by measuring the temperature and the pressure of a sealing grease cavity, the method cannot timely and accurately acquire the real state of the sealing self, and the information has hysteresis. The method is characterized in that the pressure sensor with the elastic seat is arranged on the runway, the pressure of the runway caused by the abrasion of the lip ring is continuously changed, the abrasion of the rubber ring is judged according to the change, the sensor is arranged on the runway, whether the tightness is damaged or not cannot be ensured by the actual process, and the problems of high processing difficulty and the like are solved.
Currently, no mature method for detecting the abrasion loss of the lip ring exists. 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 existing in the prior art, the main purpose of the embodiment of the invention is to provide a method and a device for detecting the abrasion of a lip-shaped sealing ring of a shield machine and the shield machine, so that the real-time and accurate detection of the abrasion condition of the lip-shaped sealing ring of the shield machine is realized.
In order to achieve the above purpose, an embodiment of the present invention provides a method for detecting wear of a lip seal ring of a shield machine, including:
obtaining resistance strain values of a plurality of sealing rings; the resistance strain value of the sealing ring is generated by a plurality of resistance strain pieces arranged on the lip-shaped sealing ring of the shield machine;
determining the abrasion loss of the corresponding positions of each resistance strain gauge according to the resistance strain value of the sealing ring and by utilizing the corresponding relation between the preset abrasion loss and the strain value;
And obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion quantity of the corresponding position of each resistance strain gauge.
Optionally, in an embodiment of the present invention, the correspondence between the wear amount and the strain value is pre-established by:
Collecting strain data of a plurality of sealing rings by using a strain collecting instrument; the strain data of the sealing ring are generated through a resistance strain gauge arranged on the lip-shaped sealing ring of the shield machine;
And acquiring the corresponding abrasion loss of 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 corresponding abrasion loss.
Optionally, in an embodiment of the present invention, the method further includes: and filtering 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 following components:
the resistance strain value module is used for acquiring resistance strain values of a plurality of sealing rings; the resistance strain value of the sealing ring is generated by a plurality of resistance strain pieces arranged on the lip-shaped sealing ring of the shield machine;
the abrasion loss module is used for determining the abrasion loss of the corresponding positions of the resistance strain gauges by utilizing the preset corresponding relation between the 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.
The embodiment of the invention also provides a shield machine, which comprises: runway, strain acquisition instrument and 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.
Optionally, in an embodiment of the present invention, the shield machine further includes a mesh wire, and the mesh wire is disposed between the strain gauge and the upper computer.
Optionally, in an embodiment of the present invention, a resistance strain gauge is disposed on an outer surface of the lip of the seal ring 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 gauge 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, the processor implementing the above 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, the abrasion condition of the lip-shaped sealing ring of the shield machine is detected by utilizing the acquired strain value, the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the abrasion loss of the rubber ring is accurately and directly measured, and the situation that the sealing performance is damaged is effectively prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for detecting wear of a lip seal ring of a shield machine according to an embodiment of the invention;
FIG. 2 is a flow chart of establishing a relationship between wear and strain values in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a shield tunneling machine according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of sticking a resistance strain gauge according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a lip seal according to an embodiment of the present invention, before and after installation;
FIG. 6 is a schematic diagram of a lip seal according to an embodiment of the present invention, comparing before and after wear;
FIG. 7 is a schematic structural diagram of a shield tunneling machine lip seal ring abrasion detection device 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 invention.
Detailed Description
The embodiment of the invention provides a shield machine lip seal ring abrasion detection method and device and a shield machine.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
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, where an execution main body of the method for detecting wear of a lip seal ring of a shield machine provided by the 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 resistance strain values of the sealing rings; the resistance strain value of the sealing ring is generated by a plurality of resistance strain pieces arranged on the lip-shaped sealing ring of the shield machine;
step S2, determining the abrasion loss of the corresponding positions of each resistance strain gauge according to the resistance strain value of the sealing ring and by utilizing the preset corresponding relation between the abrasion loss and the strain value;
And step S3, obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion quantity of the corresponding position of each resistance strain gauge.
The deformation of the lip-shaped sealing ring is measured through the strain gauge adhered to the lip-shaped sealing ring, and the abrasion loss of the lip-shaped sealing ring can be measured more directly and accurately according to the strain generated by the interaction of the lip-shaped sealing ring on the runway instead of the pressure between the lip-shaped sealing ring and the runway.
Further, a resistance strain gauge is attached to the lip-shaped sealing ring, holes are punched near the position where the sealing ring is installed, and a strain gauge connecting wire is led out of the device through a wire with a shielding. When the device runs, the sealing ring is inevitably worn due to the long-time relative movement of the sealing ring and the runway, the sealing ring is deformed to a certain extent after the sealing ring is worn, the strain acquisition instrument uploads acquired deformation data to the upper computer, and the upper computer converts the strain data into the wear amount of the rubber ring after the data is processed by an intelligent algorithm and displays the wear amount on the display.
Further, after the upper computer obtains the resistance strain values of the plurality of sealing rings, the abrasion loss corresponding to the resistance strain values of the current sealing rings, namely the abrasion loss corresponding to the positions of the resistance strain sheets, is determined according to the preset corresponding relation between the abrasion loss and the strain values. According to different actual working condition demands, different abrasion loss can be divided into different abrasion results, including slight abrasion, common abrasion and serious abrasion.
Furthermore, the abrasion loss of the corresponding position of each resistance strain gauge can reflect the abrasion loss of the position, and the abrasion loss of the lip-shaped sealing ring of the shield tunneling machine can be comprehensively obtained by counting the abrasion loss of the corresponding position of each resistance strain gauge. Specifically, if serious abrasion occurs at a certain position, the abrasion result of the lip-shaped sealing ring of the shield machine is serious abrasion. And the position where severe abrasion occurs is accurately positioned, and the processing efficiency of operators is improved.
In addition, when the abrasion result is serious abrasion, abrasion early warning information can be generated and sent to operators, so that the problem caused by insufficient sealing performance of the lip ring of the shield machine is avoided in time.
As an embodiment of the present invention, as shown in fig. 2, the relationship between the wear amount and the strain value is previously established by:
s21, acquiring strain data of a plurality of sealing rings by using a strain acquisition instrument; the strain data of the sealing ring are generated through a resistance strain gauge arranged on the lip-shaped sealing ring of the shield machine;
step S22, the corresponding abrasion loss of the strain data of each sealing ring is obtained, and the corresponding relation between the abrasion loss and the strain value is determined according to the strain data of the sealing ring and the corresponding abrasion loss.
Wherein, in a certain range, the larger the abrasion loss is, the larger the strain of the sealing ring is. And (3) sticking the resistance strain gauge on the sealing ring, collecting the strain on the sealing ring in real time by a strain collecting instrument, measuring the abrasion loss D1 of the sealing ring every time T time of the equipment, recording the strain value x at the moment, and obtaining N groups of values corresponding to the abrasion loss and the strain value through N times of measurement. Fitting the data of N groups of abrasion loss and strain values to obtain a mathematical relationship between the abrasion loss and the strain values, wherein the mathematical relationship can be expressed as: d=ax 3+bx2 +cx+m, where D is the 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 strain gauge of the sealing ring can be known by substituting the acquired strain data into the formula.
As an embodiment of the present invention, the method further comprises: and filtering the resistance strain value of the sealing ring by using a digital filtering algorithm.
In practical application, the data collected by the strain collecting 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 to remove the interference data so as to avoid erroneous judgment, 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, the abrasion condition of the lip-shaped sealing ring of the shield machine is detected by utilizing the acquired strain value, the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the abrasion loss of the rubber ring is accurately and directly measured, and the situation that the sealing performance is damaged is effectively prevented.
Fig. 3 is a schematic structural diagram of a shield tunneling machine according to an embodiment of the present invention, where the shield tunneling machine includes: runway 1, strain acquisition instrument 2 and 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 gauge 2 is connected with an external upper computer, and is used for acquiring a strain signal of the resistance strain gauge 32 and transmitting the strain signal to the upper computer.
As an embodiment of the invention, the shield machine further comprises a net wire 5, and the net wire is arranged 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 lip outside surface of the seal ring main body 31.
As an embodiment of the invention, the lip seal further comprises a shielding wire 4, the shielding wire 4 being arranged between the strain gauge 2 and the resistive strain gauge 32.
In this embodiment, the resistive strain gauge is used to convert the 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 wire with shielding is used for connecting the resistance strain gauge with the acquisition instrument; PC-real-time monitoring the wear amount of the lip ring; the network cable is used for communication between the analyzer and the PC; by sticking a resistance strain gauge on the lip-shaped sealing ring, the abrasion loss of the lip-shaped sealing ring is determined by measuring the strain of the lip-shaped sealing ring by using the resistance strain gauge.
The invention utilizes the resistance strain gauge to measure the deformation of the sealing ring to infer the abrasion loss of the sealing ring. The general schematic diagram is shown in fig. 3; the components of the composition include: the resistance strain gauge 32, the lip-shaped sealing ring 3 driven by the shield machine, the shielding wire 4, the strain acquisition instrument 2, the net twine 5 and the upper computer 6. The resistance strain gauge 32 is attached to the lip seal body 31, holes are punched near the position where the lip seal is mounted, and the strain gauge connecting wire is led out of the equipment through the shield wire 4. When the equipment runs, due to the long-time relative movement of the lip-shaped sealing ring 3 and the runway 1, the lip-shaped sealing ring 3 is inevitably worn, after the wear, the sealing ring is deformed to a certain extent, the strain acquisition instrument 2 uploads acquired deformation data to the upper computer, and the upper computer PC processes the data through an intelligent algorithm, converts the strain data into the wear amount of the lip-shaped sealing ring and displays the wear amount on the display.
Further, the lip seal ring is arranged on the front and back of the equipment and is shown in a comparison schematic diagram 5 and a comparison schematic diagram 6; in the figure, 101 is the shape of the sealing ring in a natural state, 102 is the shape of the sealing ring after being installed on equipment, 103 is the shape of the sealing ring after being worn, and as seen from 101 and 102, the sealing ring is bent and deformed after being installed, has a certain compression amount, and the bending deformation of the sealing ring gradually disappears along with the wear of the sealing ring.
As shown in fig. 5, 102 indicates that the lip seal is compressed by about 3 MM to 4MM compared with the original shape 101 of the lip seal after the lip seal is mounted. As the lip seal moves relative to the runway, the lip seal wears away and the amount of compression decreases, eventually the lip seal is as shown at 103 in fig. 6. I.e. as the device operates, the lip seal is progressively reduced from the initial maximum compression, and the strain is correspondingly reduced. 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 complete state of the lip-shaped sealing ring and the integrity of the main driving sealing property in real time, and also becomes possible for effectively preventing the damage of the sealing property.
In this embodiment, regarding the installation of the resistance strain gauge, since the lip seal ring is made of rubber, and the diameter of the lip seal ring used on the shield machine is generally large, the selected strain gauge length is not easy to be too long, otherwise the strain gauge is easy to break. In order to more accurately measure the abrasion of the lip-shaped sealing ring, the number of the adhered resistance strain gauges is required to be estimated according to the diameter of the lip-shaped sealing ring, and a 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 limitation of the sensitivity of the resistance strain gauge, the distance between every two resistance strain gauges is 20MM, namely 63 resistance strain gauges are required to be stuck. How to mount a piece of resistance strain gauge is now described, and the effect of mounting the strain gauge on the lip seal is shown in fig. 4. After the strain gauge is flatly adhered to the lip-shaped sealing ring by using glue, the surface layer of the strain gauge is smeared by special glue for protection. The resistance strain gauge is then connected to the strain gauge 2 by a three wire connection using a shielded wire 4, and the strain gauge 2 is connected to a PC by ethernet.
The corresponding relation between the strain data and the abrasion loss of the lip-shaped sealing ring is that the larger the abrasion loss is, the larger the strain of the sealing ring is. And (3) sticking a resistance strain gauge on the lip-shaped sealing ring, collecting the strain of the lip-shaped sealing ring in real time by a strain collecting instrument, manually measuring the abrasion loss D1 of the sealing ring every interval T time of equipment, recording the strain value x at the moment, and obtaining N groups of abrasion loss values corresponding to the strain values through N times of measurement. Fitting the data of the N groups of abrasion loss and strain values to obtain a mathematical relationship between the abrasion loss and the strain values, wherein the mathematical relationship can be D=ax 3+bx2 +cx+m. The mathematical formula is realized on the upper computer, and the abrasion loss of the position of the strain gauge of the lip-shaped sealing ring can be known by substituting the acquired strain data into the formula.
Further, in practical application, considering disturbance or interference of other factors, the data collected by the strain acquisition instrument is invalid or abnormal, at this time, a digital filtering algorithm needs to be added to remove the disturbance data so as to avoid erroneous judgment, and then the strain value is substituted into a mathematical relation formula of the abrasion loss and the strain value.
Further, after the abrasion loss is obtained, the abrasion loss is displayed on the interface of the upper computer 6, when certain abrasion exists, a worker is prompted, and after the worker confirms, the prompt disappears. Therefore, a worker can know the abrasion condition of the sealing ring in time to replace the sealing ring, and the condition that sand, soil, water and stone enter the main drive to damage the main bearing is avoided.
In addition, the invention communicates with the PC in 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, the abrasion condition of the lip-shaped sealing ring of the shield machine is detected by utilizing the acquired strain value, the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the abrasion loss of the rubber ring is accurately and directly measured, and the situation that the sealing performance is damaged is effectively prevented.
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, where the device includes:
the resistance strain value module 10 is used for acquiring resistance strain values of a plurality of sealing rings; the resistance strain value of the sealing ring is generated by a plurality of resistance strain pieces arranged on the lip-shaped sealing ring of the shield machine;
The abrasion loss module 20 is used for determining the abrasion loss of the corresponding positions of each resistance strain gauge according to the resistance strain value of the sealing ring by utilizing the preset corresponding relation between the abrasion loss and the strain value;
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 conception as the shield machine lip seal ring abrasion detection method, the invention also provides the shield machine lip seal ring abrasion detection device. Because the principle of the shield machine lip seal ring abrasion detection device for solving the problem is similar to that of a shield machine lip seal ring abrasion detection method, the implementation of the shield machine lip seal ring abrasion detection device can refer to the implementation of the shield machine lip seal ring abrasion detection method, and repeated parts are omitted.
According to the invention, the resistance strain gauge is arranged on the lip-shaped sealing ring of the shield machine, the abrasion condition of the lip-shaped sealing ring of the shield machine is detected by utilizing the acquired strain value, the problems of low detection precision, poor real-time performance, high processing difficulty and the like in the prior art are solved, the abrasion loss of the rubber ring is accurately and directly measured, and the situation that the sealing performance is damaged is effectively 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, the processor implementing the above 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: a communication module 110, an input unit 120, an audio processor 130, a display 160, a power supply 170. It is noted that the electronic device 600 need not include all of the components shown in fig. 8; in addition, the electronic device 600 may further include components not shown in fig. 8, to which reference is made to the related art.
As shown in fig. 8, the central processor 100, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device, which central processor 100 receives inputs and controls 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 about failure may be stored, and a program for executing the information may be stored. And the central processor 100 can execute the program stored in the memory 140 to realize information storage or processing, etc.
The input unit 120 provides an input to the central processor 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 for displaying display objects such as images and characters. The display may be, for example, but not limited to, an LCD display.
The memory 140 may be a solid state memory such as Read Only Memory (ROM), random Access Memory (RAM), SIM card, or the like. But also a memory which holds information even when powered down, can be selectively erased and provided with further data, an example of which is sometimes referred to as EPROM or the like. Memory 140 may also be some other type of device. Memory 140 includes a buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application/function storage 142, the application/function storage 142 for storing application programs and function programs or a flow for executing operations of the electronic device 600 by the central processor 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 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 applications, address book applications, etc.).
The communication module 110 is a transmitter/receiver that transmits and receives signals via the antenna 111. A 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, etc., 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 to receive audio input from the microphone 132 to implement usual telecommunication functions. The audio processor 130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, the audio processor 130 is also coupled to the central processor 100 so that sound can be recorded locally through the microphone 132 and so that sound stored locally can be played through the speaker 131.
It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (8)
1. The method for detecting the abrasion of the lip-shaped sealing ring of the shield tunneling machine is characterized by comprising the following steps:
Obtaining resistance strain values of a plurality of sealing rings; the sealing ring resistance strain value is generated by a plurality of resistance strain pieces arranged on the lip-shaped sealing ring of the shield machine;
determining the abrasion loss of the corresponding positions of each resistance strain gauge by utilizing the preset corresponding relation between the abrasion loss and the strain value according to the resistance strain value of the sealing ring;
Obtaining the abrasion result of the lip-shaped sealing ring of the shield machine according to the abrasion loss of the corresponding position of each resistance strain gauge;
Wherein, the corresponding relation between the abrasion loss and the strain value is pre-established by the following modes: measuring the abrasion loss of the sealing ring at each interval T time, recording the strain value x corresponding to the moment, and measuring for N times to obtain N groups of abrasion loss and strain values; fitting N groups of abrasion loss and strain values to obtain a corresponding relation between the abrasion loss and the strain values, wherein the relation is expressed as follows: d=ax 3+bx2 +cx+m; wherein D is the abrasion loss, x is the strain value, and a, b, c and m are coefficients.
2. The method according to claim 1, wherein the method further comprises: and filtering the resistance strain value of the sealing ring by using a digital filtering algorithm.
3. A shield tunneling machine lip seal circle wear detection device, characterized in that the device comprises:
The resistance strain value module is used for acquiring resistance strain values of a plurality of sealing rings; the sealing ring resistance strain value is generated by a plurality of resistance strain pieces arranged on the lip-shaped sealing ring of the shield machine;
the abrasion loss module is used for determining the abrasion loss of the corresponding positions of each resistance strain gauge according to the resistance strain value of the sealing ring by utilizing the preset corresponding relation between the abrasion loss and the strain value;
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;
Wherein, the corresponding relation between the abrasion loss and the strain value is pre-established by the following modes: measuring the abrasion loss of the sealing ring at each interval T time, recording the strain value x corresponding to the moment, and measuring for N times to obtain N groups of abrasion loss and strain values; fitting N groups of abrasion loss and strain values to obtain a corresponding relation between the abrasion loss and the strain values, wherein the relation is expressed as follows: d=ax 3+bx2 +cx+m; wherein D is the abrasion loss, x is the strain value, and a, b, c and m are coefficients.
4. The utility model provides a shield constructs machine which characterized in that, shield constructs the machine includes: runway, strain acquisition instrument and 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 outer side surface of the lip of 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 a strain signal of the resistance strain gauge and sending the strain signal to the upper computer; the upper computer is used for determining the abrasion loss of the corresponding positions of the resistance strain gauges by utilizing the preset abrasion loss and strain value corresponding relation;
Wherein, the corresponding relation between the abrasion loss and the strain value is pre-established by the following modes: measuring the abrasion loss of the sealing ring at each interval T time, recording the strain value x corresponding to the moment, and measuring for N times to obtain N groups of abrasion loss and strain values; fitting N groups of abrasion loss and strain values to obtain a corresponding relation between the abrasion loss and the strain values, wherein the relation is expressed as follows: d=ax 3+bx2 +cx+m; wherein D is the abrasion loss, x is the strain value, and a, b, c and m are coefficients.
5. The shield tunneling machine of claim 4, further comprising a mesh wire disposed between the strain gauge and the host computer.
6. The shield machine of claim 4, wherein the lip seal ring further comprises a shield wire disposed between the strain gauge and the resistive strain gauge.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 2 when executing the computer program.
8. 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 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210438415.1A CN114812366B (en) | 2022-04-25 | 2022-04-25 | Shield machine lip seal ring abrasion detection method and device and shield machine |
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| CN202210438415.1A CN114812366B (en) | 2022-04-25 | 2022-04-25 | Shield machine lip seal ring abrasion detection method and device and shield machine |
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| CN114812366B true CN114812366B (en) | 2024-06-28 |
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| CN117091831B (en) * | 2023-10-20 | 2023-12-19 | 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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|---|---|---|---|---|
| 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 |
| 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 |
|---|---|---|---|---|
| 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 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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