Intelligent shield cutter integrating energy self-sufficiency and working state self-detection and monitoring method

Abstract

The invention belongs to the field of shield cutters, and provides an intelligent shield cutter integrating energy self-sufficiency and working state self-detection and a monitoring method. The intelligent shield cutter integrating energy self-sufficiency and working state self-detection comprises a cutter sensing system, a data transmission system, an energy supply system and an abnormity early warning system. The energy supply system is used for providing electric energy for the cutter sensing system, the data transmission system and the abnormity early warning system; the cutter sensing system is used for sensing interface information, rotating speed and working temperature of the shield cutter; the data transmission system is connected with the tool sensing system and the abnormity early warning system and used for transmitting information sensed by the tool sensing system to the abnormity early warning system. And the abnormity early warning system is used for judging the geological change condition on a tunnel face and the working state of the cutter according to the interface information, the rotating speed and the working temperature of the shield cutter so as to determine the opportunity of opening a bin and changing the cutter and guide shield tunneling parameters.

Description

Technical Field

[0001] The invention belongs to the field of shield cutters, and in particular relates to an intelligent shield cutter and a monitoring method integrating energy self-sufficiency and working state self-test. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The wear of shield machine cutters directly affects the project progress and construction costs. Traditional shield cutters have problems such as high energy consumption, easy wear and tear, and difficulty in real-time monitoring of working status. If the cutters are not replaced in time, the shield tunneling speed will be slow, affecting the progress of the project. However, frequent opening of the warehouse to check the status of the cutters will affect the construction progress and increase the construction cost. Summary of the invention

[0004] In order to solve the problem that the shield cutter in the background technology is difficult to monitor its own working status in real time and cannot reasonably determine the opening and changing time, the present invention provides an intelligent shield cutter and monitoring method with integrated energy self-sufficiency and working status self-test, which can realize real-time monitoring and analysis of the wear status of the cutter, automatically adjust the working parameters, and improve the utilization rate and work efficiency of the cutter. At the same time, the power system of the cutter itself is used to achieve energy self-sufficiency, reduce external energy dependence, and reduce operating costs, which has important engineering application potential.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A first aspect of the present invention provides an intelligent shield tool with integrated energy self-sufficiency and working status self-test.

[0007] An intelligent shield tool integrating energy self-sufficiency and working status self-test, comprising:

[0008] Tool sensing system, data transmission system, energy supply system and abnormal warning system;

[0009] The energy supply system is used to provide electrical energy to the tool sensing system, the data transmission system and the abnormality warning system;

[0010] The tool sensing system is used to sense the interface information, rotation speed and working temperature of the shield tool;

[0011] The data transmission system is connected to the tool sensing system and the abnormal warning system respectively, and is used to transmit the information sensed by the tool sensing system to the abnormal warning system;

[0012] The abnormal warning system is used to judge the geological changes on the tunnel face and the working status of the cutter according to the interface information, rotation speed and working temperature of the shield cutter, and then determine the timing of opening the chamber to change the cutter and guide the shield excavation parameters.

[0013] As an implementation method, the tool sensing system includes an acoustic emission device; the acoustic emission device includes a signal excitation component and an interface sensing component;

[0014] When the tool is in working state, the signal excitation component is in non-working state, and the interface sensing component is used to collect the tool rock breaking noise;

[0015] When the hob is in a non-working state, the signal excitation component is used to hammer the cutter to generate vibration, and the interface sensing component is used to collect reflected sound wave information.

[0016] As an implementation manner, the tool sensing system further includes a rotation speed sensor and a temperature sensor; the rotation speed sensor is used to sense the rotation information of the tool; and the temperature sensor is used to sense the working temperature of the tool.

[0017] As an implementation method, the data transmission system is installed on the upper part of the shield cutter head and is equipped with an external charging cable.

[0018] As an embodiment, the energy supply system includes a self-generating device and an energy storage device. The self-generating device is used to generate current when the tool is working and transmit it to the energy storage device for storage.

[0019] As an embodiment, the self-generating device includes a micro-magnetic block, a micro-damping coil and an electric wire. The micro-magnetic block is fixed at the rotating position when the outer ring of the tool is working, and the micro-damping coil is located at the center of the tool and never rotates. When the tool is working, the micro-magnetic block cuts the micro-damping coil to generate current.

[0020] As an implementation manner, in the abnormal warning system:

[0021] Determine the soft-hard geological boundary point on the tunnel face based on the cutter rock breaking vibration information in the shield tool interface information;

[0022] Determine whether to replace the hob according to the hob wear monitoring information in the tool interface information;

[0023] The speed and operating temperature can be used to assist in determining whether the reel is operating normally.

[0024] As an implementation method, the working process of the hob is assisted in judging based on the rotation speed and the working temperature:

[0025] When the speed is 0 and the operating temperature is lower than the preset temperature threshold, it is considered normal;

[0026] When the speed is not 0 and the temperature is less than the preset temperature threshold, it is judged that the working state of the hob is not saturated, and the spindle thrust can be increased;

[0027] When the rotation speed is not 0 and the temperature is greater than or equal to the set temperature threshold, it is determined that the hob working state is over-saturated, and the spindle thrust can be reduced.

[0028] As an implementation method, the abnormal warning system includes a data processing module and a warning decision module; the data processing module is used to analyze tool interface information, tool speed information and tool temperature information; the warning decision module warns of abnormal data and provides a tool changing plan, and can also guide the selection of shield tunneling parameters.

[0029] The second aspect of the present invention provides a monitoring method for an intelligent shield tool integrating energy self-sufficiency and working status self-test.

[0030] A monitoring method for an intelligent shield tool integrating energy self-sufficiency and working status self-testing, comprising:

[0031] Sense shield tool interface information, rotation speed and working temperature;

[0032] According to the shield cutter interface information, rotation speed and working temperature, the geological changes on the face and the working status of the cutter are judged, and then the timing of opening the chamber to change the cutter and guiding the shield excavation parameters are determined.

[0033] The beneficial effects of the present invention are:

[0034] In order to solve the problem that it is difficult for shield cutters to monitor their own working status in real time and cannot reasonably determine the timing of opening and changing cutters, the present invention proposes an intelligent shield cutter with energy self-sufficient working status self-testing function, which uses the cutter sensing system to sense the shield cutter interface information, rotation speed and working temperature; then the abnormal warning system judges the geological changes on the face and the cutter working status according to the shield cutter interface information, rotation speed and working temperature, and then determines the timing of opening and changing cutters and guiding shield tunneling parameters, realizing real-time monitoring and analysis of the cutter wear status, automatically adjusting working parameters, and improving cutter utilization and work efficiency. At the same time, the cutter's own power system is used to achieve energy self-sufficiency, reduce external energy dependence, reduce operating costs, and has important engineering application potential.

[0035] The present invention realizes real-time monitoring of the tool's own status and early warning of damage status during shield construction, and at the same time has the function of energy self-sufficiency, ensuring ultra-long-term real-time monitoring. It can accurately sense the tool damage and determine the reasonable time to open the chamber and change the tool, which is of great significance to the safe and efficient excavation of the shield.

[0036] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0038] Figure 1 It is a schematic diagram of the structure of an intelligent shield tool with integrated energy self-sufficiency and working status self-test according to an embodiment of the present invention;

[0039] Figure 2 It is a monitoring principle diagram of an intelligent shield tool with integrated energy self-sufficiency and working status self-test according to an embodiment of the invention.

[0040] Among them, 1 is a temperature sensor, 2 is an energy storage device, 3 is an integrated knife ring, 4 is an acoustic emission device, 5 is a data transfer system, 6 is a shield machine, 7 is an abnormal warning system, 8 is a knife box, 9 is a self-generating device, 10 is a micro magnetic block, 11 is a speed sensor, 12 is a perception information transmission system, and 13 is a perception information transmission line. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] according to Figure 1 ,This embodiment provides an intelligent shield tool with integrated energy self-sufficiency and working status self-test, which includes: a tool sensing system, a data transmission system, an energy supply system and an abnormality warning system;

[0045] The energy supply system is used to provide electrical energy to the tool sensing system, data transmission system and abnormal warning system; the tool sensing system is used to sense the interface information, rotation speed and working temperature of the shield tool; the data transmission system is connected to the tool sensing system and the abnormal warning system respectively, and is used to transmit the information sensed by the tool sensing system to the abnormal warning system; the abnormal warning system is used to judge the geological changes on the face and the working status of the tool based on the interface information, rotation speed and working temperature of the shield tool, and then determine the timing of opening the chamber to change the tool and guide the shield excavation parameters.

[0046] In a specific implementation process, the tool sensing system includes an acoustic emission device; the acoustic emission device includes a signal excitation component and an interface sensing component;

[0047] When the tool is in working state, the signal excitation component is in non-working state, and the interface sensing component is used to collect the tool rock breaking noise;

[0048] When the hob is in a non-working state, the signal excitation component is used to hammer the cutter to generate vibration, and the interface sensing component is used to collect reflected sound wave information.

[0049] When the cutter is in working state, the sound frequency generated by the cutter cutting is inconsistent due to different formations, so the database requirements are high. When the hob is not in working state, the monitoring effect is more accurate due to the regular vibration source sound waves it provides.

[0050] In one or more embodiments, the tool sensing system further includes a rotation speed sensor and a temperature sensor; the rotation speed sensor is used to sense the rotation information of the tool; and the temperature sensor is used to sense the working temperature of the tool.

[0051] In some specific implementations, the data transmission system is installed on the upper part of the shield cutter head and is equipped with an external charging cable. The data transmission system mainly plays the role of information transmission, and the transmitted information is the monitoring information of the tool sensing system, including the information monitored by the acoustic emission device, the speed sensor and the temperature sensor.

[0052] In a specific implementation process, the energy supply system includes a self-generating device and an energy storage device. The self-generating device is used to generate current when the tool is working and transmit it to the energy storage device for storage.

[0053] Among them, the self-generating device includes a micro-magnetic block, a micro-damping coil and an electric wire. The micro-magnetic block is fixed at the rotating position of the outer ring of the tool when it is working, and the micro-damping coil is located at the center of the tool and never rotates. When the tool is working, the micro-magnetic block cuts the micro-damping coil to generate current.

[0054] The energy storage device is a miniature super battery that can store the electricity generated by the tool. Second, there is an external charging cable. When the tool is offline, a large amount of electricity has been stored, thus ensuring the normal operation of the tool sensing system.

[0055] The energy storage device has an external charging line. When the tool is offline, a large amount of electric energy has been stored, thereby ensuring the normal operation of the tool sensing system.

[0056] according to Figure 2 ,The shield cutter interface information includes the rock breaking vibration information and the wear monitoring information of the cutter.

[0057] In the abnormal warning system:

[0058] Determine the soft-hard geological boundary point on the tunnel face based on the cutter rock breaking vibration information in the shield tool interface information;

[0059] Determine whether to replace the hob according to the hob wear monitoring information in the tool interface information;

[0060] The speed and operating temperature can be used to assist in determining whether the reel is operating normally.

[0061] In the specific implementation process, the steps for determining the soft and hard geological boundary point on the tunnel face according to the cutter rock breaking vibration information in the shield tool interface information are as follows:

[0062] When the roller cutter transitions from one homogeneous layer to the next homogeneous layer, if the amplitude of the vibration information changes beyond the set threshold, the abnormal warning system will mark the location as the soft-hard junction point;

[0063] The soft and hard intersection points of the entire circle can be identified after the roller cutter rotates one circle. The soft and hard intersection points of the entire palm face can be obtained by installing the sensor on all roller cutters on one axis.

[0064] Then connect the soft and hard boundary points in sequence to obtain the soft and hard interface of the stratum.

[0065] In the specific implementation process, the steps of determining whether to replace the hob according to the hob wear monitoring information in the tool interface information are as follows:

[0066] When the hob is not working, the acoustic emission device strikes the cutter ring, and the interface sensing component senses the sound wave information;

[0067] The abnormal warning system can calculate the real-time thickness of the hob according to the formula d=0.5×v×t; when the thickness of the hob is less than the thickness threshold, an alarm is issued to guide the staff to open the warehouse and change the tool in time.

[0068] Among them, v is the transmission speed of sound in the cutter ring, t is the time from the sound wave is emitted to the rebound reception, and d is the thickness of the hob.

[0069] Specifically, the working process of the hob can be determined based on the rotation speed and working temperature:

[0070] When the speed is 0 and the working temperature is less than the preset temperature threshold, it is considered normal; at this time, the stratum is most likely a soft soil stratum;

[0071] When the speed is not 0 and the temperature is less than the preset temperature threshold, it is judged that the working state of the hob is not saturated, and the spindle thrust can be increased to improve the working efficiency;

[0072] When the rotation speed is not 0 and the temperature is greater than or equal to the set temperature threshold, it means that the stratum is hard and the cutter working state is over-saturated. The main shaft thrust can be reduced to reduce damage to the cutter, thereby judging and guiding the selection of shield excavation parameters.

[0073] In one or more embodiments, the abnormal warning system includes a data processing module and a warning decision module; the data processing module is used to analyze tool interface information, tool speed information and tool temperature information; the warning decision module warns of abnormal data and provides a tool changing plan, and can also guide the selection of shield tunneling parameters.

[0074] In other embodiments, the abnormal warning system further includes a data display module, a database and a data push module; the data display module displays the decision data intuitively on the screen. The database gradually accumulates data to provide data support for accurate analysis of tools. The data push module can push data to mobile phones and PCs, making it convenient for multiple people to check and obtain tool status in a timely manner.

[0075] The monitoring method of the intelligent shield tool based on the above-mentioned integrated energy self-sufficiency and working status self-test includes:

[0076] Sense shield tool interface information, rotation speed and working temperature;

[0077] According to the shield cutter interface information, rotation speed and working temperature, the geological changes on the face and the working status of the cutter are judged, and then the timing of opening the chamber to change the cutter and guiding the shield excavation parameters are determined.

[0078] The present invention realizes real-time monitoring and analysis of tool wear status, can automatically adjust working parameters, and improves tool utilization and work efficiency. At the same time, the tool's own power system is used to achieve energy self-sufficiency, reduce external energy dependence, and reduce operating costs, which has important engineering application potential.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent shield tool with integrated energy self-sufficiency and working status self-test, characterized in that: include: Tool sensing system, data transmission system, energy supply system and abnormal warning system; The energy supply system is used to provide electrical energy to the tool sensing system, the data transmission system and the abnormality warning system; The tool sensing system is used to sense the interface information, rotation speed and working temperature of the shield tool; The data transmission system is connected to the tool sensing system and the abnormal warning system respectively, and is used to transmit the information sensed by the tool sensing system to the abnormal warning system; The abnormal warning system is used to judge the geological changes on the tunnel face and the working status of the cutter according to the interface information, rotation speed and working temperature of the shield cutter, and then determine the timing of opening the chamber to change the cutter and guide the shield excavation parameters.

2. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 1 is characterized in that: The tool sensing system includes an acoustic emission device; the acoustic emission device includes a signal excitation component and an interface sensing component; When the tool is in working state, the signal excitation component is in non-working state, and the interface sensing component is used to collect the tool rock breaking noise; When the hob is in a non-working state, the signal excitation component is used to hammer the cutter to generate vibration, and the interface sensing component is used to collect reflected sound wave information.

3. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 2 is characterized in that: The tool sensing system further comprises a rotation speed sensor and a temperature sensor; the rotation speed sensor is used to sense the rotation information of the tool; and the temperature sensor is used to sense the working temperature of the tool.

4. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 1, characterized in that: The data transmission system is installed on the upper part of the shield cutter head and is equipped with an external charging cable.

5. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 1, characterized in that: The energy supply system comprises a self-generating device and an energy storage device. The self-generating device is used to generate current when the tool is working and transmit the current to the energy storage device for storage.

6. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 5, characterized in that: The self-generating device comprises a micro-magnetic block, a micro-damping coil and an electric wire. The micro-magnetic block is fixed at the rotating position of the outer ring of the tool when it is working, and the micro-damping coil is located at the center of the tool and never rotates. When the tool is working, the micro-magnetic block cuts the micro-damping coil to generate current.

7. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 1, characterized in that: In the abnormal warning system: Determine the soft-hard geological boundary point on the tunnel face based on the cutter rock breaking vibration information in the shield tool interface information; Determine whether to replace the hob according to the hob wear monitoring information in the tool interface information; The speed and operating temperature can be used to assist in determining whether the reel is operating normally.

8. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 7, characterized in that: The working process of the hob can be judged based on the speed and working temperature: When the speed is 0 and the operating temperature is lower than the preset temperature threshold, it is considered normal; When the speed is not 0 and the temperature is less than the preset temperature threshold, it is judged that the working state of the hob is not saturated, and the spindle thrust can be increased; When the rotation speed is not 0 and the temperature is greater than or equal to the set temperature threshold, it is determined that the hob working state is over-saturated, and the spindle thrust can be reduced.

9. The intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in claim 1, characterized in that: The abnormal warning system includes a data processing module and a warning decision module; the data processing module is used to analyze tool interface information, tool speed information and tool temperature information; the warning decision module warns of abnormal data and provides a tool changing plan, and can also guide the selection of shield tunneling parameters.

10. A monitoring method for an intelligent shield tool with integrated energy self-sufficiency and working status self-test as claimed in any one of claims 1 to 9, comprising: Sense shield tool interface information, rotation speed and working temperature; According to the shield cutter interface information, rotation speed and working temperature, the geological changes on the face and the working status of the cutter are judged, and then the timing of opening the chamber to change the cutter and guiding the shield excavation parameters are determined.

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