CN211602771U - Shield constructs machine cutter wearing and tearing detecting system - Google Patents
Shield constructs machine cutter wearing and tearing detecting system Download PDFInfo
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- CN211602771U CN211602771U CN201922389578.1U CN201922389578U CN211602771U CN 211602771 U CN211602771 U CN 211602771U CN 201922389578 U CN201922389578 U CN 201922389578U CN 211602771 U CN211602771 U CN 211602771U
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Abstract
The utility model discloses a shield constructs machine cutter wearing and tearing detecting system, detecting system includes micro resistance, miniature battery, sensor, signal transmitter, signal receiver, micro resistance is provided with a plurality ofly in the cutter of same shield structure machine, and micro resistance quantity is relative with the cutter number of piles of this shield structure machine, and a plurality of micro resistance all connect in parallel through the electric wire and constitute equivalent resistance, and the electric wire setting is in the cutter layer of this shield structure machine, equivalent resistance with miniature battery, sensor series connection; the sensor is in wireless connection with the signal transmitter, the signal transmitter is adaptive to the signal receiver, the signal output end of the signal receiver is connected with the input end of the processor, and the output end of the processor is electrically connected with the signal input end of the display terminal. The utility model has stable circuit operation, accurate detection data and low cost; the method can realize more accurate abrasion detection on the cutter of the shield machine, and provides the safety performance and efficiency of the shield machine.
Description
Technical Field
The utility model belongs to the technical field of detect, a cutter wearing and tearing detection performance that shield constructs the machine improves is related to, specifically is a wear and tear detecting system of shield structure machine cutter.
Background
The shield constructs the machine at the tunnelling in-process, and the cutter of installing on the shield constructs the machine blade disc and can take place wearing and tearing of different degrees, if the wearing and tearing condition of the machine blade of shield structure that can not timely master, and then reasonable arrangement cutter replacement time, then can serious reduction shield structure machine's efficiency of construction, and in the time of serious, can make the blade disc also take place wearing and tearing.
Because the cutters arranged at different positions on the cutter head of the shield machine are likely to be worn and the wear amount of each cutter is different, the detection system is used for judging the wear position and the wear condition of the cutter, and the accuracy and the efficiency of the cutter wear detection of the shield machine are very important.
For example, "an on-line detection device for cutter wear of a shield machine and a pipe push bench" disclosed in chinese patent (publication No. CN204388773U) includes: the resistance sensor is fixed in a cutter of the shield machine or the pipe jacking machine, the end face of the resistance sensor is flush with the end face of the cutter, the resistance sensor is worn along with the cutter, and the resistance sensor is used for detecting the thickness information of the blade; the first electronic controller is arranged in the center of a cutter head of the shield tunneling machine or the push bench and used for forwarding data acquired by the resistance sensor; and the second electronic controller is connected with the first electronic controller in a wireless mode and is used for receiving and displaying the cutter abrasion condition.
As another example, the chinese patent (publication No. CN105466327B) discloses a "sensor, device, and tool system for detecting wear of a shield machine tool", where the sensor includes a ladder capacitor network, where the ladder capacitor network includes: the first ends of the first capacitor networks form first external ports of the trapezoidal capacitor networks; the two ends of the first capacitor network and the intersection point of the adjacent first capacitors in the first capacitor network are connected with the first end of one second capacitor, and the second end of each second capacitor is connected through a wire and forms a second external port of the trapezoidal capacitor network. The sensor is simple in structure and easy to realize, and can reflect the abrasion loss of the shield machine cutter more accurately.
The existing shield machine cutter abrasion detection system and method still have the problems of complex detection steps and low accuracy, and cannot identify the types of cutter excessive abrasion, cutter eccentric wear and the like in actual use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a wear detection system of shield structure machine cutter for solve the current complicated, the relatively poor problem of accuracy of shield structure machine cutter wear detection system.
In order to realize the utility model discloses an aim at, adopt following technical scheme:
a shield machine cutter abrasion detection system comprises a plurality of micro resistors, a micro battery, a sensor, a signal transmitter and a signal receiver, wherein the micro resistors are arranged in the same cutter of a shield machine, the number of the micro resistors is opposite to the number of layers of the cutter of the shield machine, the micro resistors are connected in parallel through electric wires to form an equivalent resistor, the electric wires are arranged in the cutter layer of the shield machine, and the equivalent resistor is connected with the micro battery and the sensor in series; the sensor is in wireless connection with the signal transmitter, the signal transmitter is adaptive to the signal receiver, the signal output end of the signal receiver is connected with the input end of the processor, and the output end of the processor is electrically connected with the signal input end of the display terminal.
In order to further improve the utility model discloses an effect can also adopt following technical scheme:
according to the shield machine cutter abrasion detection system, at least two micro resistors are arranged in each layer of the same cutter of the shield machine, at least two independent equivalent circuits are formed in the cutter of the shield machine, and the plurality of equivalent circuits are connected with the micro battery and the sensor in series.
According to the shield machine cutter abrasion detection system, the plurality of micro resistors in each layer of the cutter of the shield machine are respectively arranged on two sides of the cutter.
According to the shield machine cutter abrasion detection system, the resistance values of the micro resistors have differences, and the resistance values of the micro resistors are arranged in an increasing or decreasing manner according to the sequence of the number of layers of the cutters of the shield machine.
According to the shield machine cutter abrasion detection system, the detection systems are arranged on the plurality of cutters of the shield machine, and the sensors in the detection systems are provided with corresponding labels.
According to the shield machine cutter abrasion detection system, the display terminal is provided with the alarm unit, the sensor label display unit, the corresponding current value display unit and the corresponding resistance value display unit.
The system for detecting the wear of the cutter of the shield machine comprises an excessive wear subunit and an abnormal wear subunit.
According to the shield machine cutter abrasion detection system, when the cutter abrasion amount of the shield machine exceeds 25mm, the excessive abrasion sub-unit works.
According to the wear detection system for the shield machine cutter, the sensor is a Hall sensor, and the Hall sensor is installed in the cutter of the shield machine.
According to the shield tunneling machine cutter abrasion detection system, the micro battery is a constant voltage battery.
The utility model has the advantages that:
1. the utility model has stable circuit operation, accurate detection data and low cost; along with the abrasion of the cutter of the shield machine, the miniature resistor and the connecting wire are also abraded and broken, so that the resistance value of the whole system is changed. The resistance value of the current circuit can be obtained according to the current value, so that the abrasion condition of the cutter is judged, more accurate abrasion detection on the cutter of the shield machine can be realized, and the safety performance and the efficiency of the shield machine are improved.
2. The signal received by the wireless signal receiver is processed by the processor and then displayed on the display terminal, the content displayed by the display terminal comprises a sensor label display unit, a corresponding current value display unit, a resistance value display unit, a cutter wear value display unit and an alarm unit, and the alarm unit comprises excessive wear and abnormal wear. The position of the tool worn on the cutter head can be accurately judged.
3. Due to the fact that the micro resistors with different resistance values are arranged in parallel in the shield machine cutter, the fact that the resistor on one side in the cutter is continuously abraded can be found, and the cutter can be judged to be eccentric.
Drawings
Fig. 1 is an electrical schematic diagram of an embodiment of the invention;
fig. 2 is a circuit diagram of a detection system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a display terminal according to an embodiment of the present invention.
Reference numerals: 1-a current measuring circuit, 2-a signal transmitter, 3-a signal receiver, 4-a processor, 5-a display terminal, 101-a miniature battery, 102-a sensor, 103-an equivalent resistor, 104-a wire, 105-a miniature resistor, 501-a sensor label display unit, 502-a current value display unit, 503-a resistance value display unit, 504-a cutter wear value display unit and 505-an alarm unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. It will be apparent to those skilled in the art that various modifications in form, usage and implementation details may be made without departing from the principles and concepts of the invention.
As shown in fig. 1 to fig. 3, the shield machine tool wear detection system disclosed in this embodiment includes a micro resistor 105, a micro battery 101, a sensor 102, a signal transmitter 2, a signal receiver 3, and a display terminal 5.
The method comprises the steps that a plurality of micro resistors 105 are arranged in a cutter of the same shield machine, the number of the micro resistors 105 is opposite to the number of layers of the cutter of the shield machine, the micro resistors are connected in parallel through respective electric wires 104 to form an equivalent resistor 103, the electric wires 104 are arranged in the cutter layer of the shield machine, and the equivalent resistor 103, a micro battery 101 and a sensor 102 are connected in series to form a current measuring circuit 1.
The sensor 102 is in wireless connection communication with the signal emitter 2, the signal emitter 2 is matched with the signal receiver 3, the signal output end of the signal receiver 3 is connected with the input end of the processor 4, and the output end of the processor 4 is electrically connected with the signal input end of the display terminal 5.
In the embodiment, the display terminal 5 adopts an OptiPlex 3060 model of DELL, the sensor 102 adopts a Hall sensor of 0-5A, the micro battery 101 adopts a battery of a model SR-920SW, the voltage value range is 0-5v, and the detection of the detection system is more accurate and simplified under the condition that the micro battery 101 is in a constant voltage. The signal transmitter adopts a Telesky regenerative high-frequency transmitting module, and the signal receiver 3 adopts a Telesky regenerative high-frequency receiving module.
Specifically, as shown in fig. 1 and fig. 2, a plurality of micro resistors 105 with resistance values ranging from 1 Ω to 20 Ω are installed in a cutter layer of the shield machine, the micro resistors 105 are linearly arranged in a trapezoid in the cutter of the shield machine and fixed at specified positions in the cutter layer, the micro resistors 105 are connected through wires 104, a micro battery 101 supplies power to a detection system, a sensor 102 is used for measuring a current value of an equivalent circuit 103, and the current value measured by the sensor 102 is transmitted to a signal receiver 3 through a signal transmitter 2.
When the electric wire cutting machine is used, as a cutter of the shield machine is worn, the electric wire 104 connected between the micro resistors 105 is also worn and broken, so that the resistance value of the whole system is changed, the current resistance value of the equivalent circuit 103 can be obtained according to the current, and the wear condition of the cutter is judged; the signal received by the signal receiver 3 is processed by the processor 4 and displayed on the display terminal 5.
As shown in fig. 3, the display terminal 5 is provided with a sensor number display unit 501, a corresponding current value display unit 502, a detected resistance value display unit 503, a tool wear value display unit 504, and an alarm unit 505, and the alarm unit 505 can give an alarm for excessive wear and abnormal wear of the tool.
The larger the wear amount of the tool is, the larger the resistance value of the worn resistor is, and the value measured by the sensor 102 is also increased accordingly, and the wear resistance value RC is calculated from the measured current value.
The specific calculation process is as follows:
assuming that i layers of micro resistors 105 are installed in a shield machine tool, the i layers of resistors are different from each other, the first layer of resistors are R1,1, R1 and 2, the second layer of resistors are R2,1, R2 and 2, and so on, the i layer of resistors are Ri, 1 and Ri, 2, wherein R1,1, R2,1 … Ri, 1 are connected in parallel, R1,2, R2, 2 … Ri and 2 are connected in parallel, the current value of the system when no abrasion occurs is:
IO＝I1，1+I1，2+I2，1+I2，2+…+Ii，1+Ii，2，
according to
To obtain
Assuming that Ri, 1 is worn, the current value at this time is:
I′＝I1，2+I2，1+I2，2+…+Ii，1+Ii，2，
so the current variation at this time is:
IC＝IO-I′
so that the change value of the resistance at this time is,
wherein, the change value of RC-resistance, the rated voltage of U-system, the resistance value of R '-system after abrasion, the change value of IC-current, the initial current value of IO-system, and the current value of I' -system after abrasion. And converting the resistance value into which the worn micro resistor is to be worn according to the change of the resistance value, and further judging the wear condition of the cutter.
In this embodiment, 5 layers of micro resistors 105 are installed in a certain cutter on a cutter head of a shield tunneling machine, resistance values of the 5 layers of resistors are different from each other, a first layer of resistors are 1 Ω and 2 Ω respectively, a second layer of resistors are 3 Ω and 4 Ω respectively, and so on, a 3 rd layer of resistors are 5 Ω and 6 Ω respectively, wherein the 1 Ω and 3 Ω/5 Ω resistance values are connected in parallel, and the 2 Ω and 4 Ω/6 Ω are connected in parallel, and a 5v micro battery is used for supplying power to the system, so that the current value I0 of the system is when no wear occurs:
case 1: assuming that R2,1, i.e., the resistance with the resistance value of 3 Ω is worn, the current value I' at this time is:
the current change value at this time is,
IC＝IO-I′＝1667A
therefore, it can be determined that the resistance having the resistance value of 3 Ω changes, and it is possible to explain this scheme in accordance with the assumed case.
Case 2: assuming that R1,1, R1,2, i.e., the resistance having resistance values of 1 Ω and 2 Ω is worn, the current value I' at this time is:
the resistance at this time is changed to be,
IC＝IO-I＝75A
since the resistance values when 1 Ω and 2 Ω are connected in parallel are 0.667 Ω, it can be determined that the resistances having the resistance values of 1 Ω and 2 Ω change, and this is possible in accordance with the assumed case.
Wherein, the change value of RC-resistance, the initial resistance value of RO-system, the resistance value of R '-system after abrasion, the change value of IC-current, the initial current value of IO-system, and the current value of I' -system after abrasion.
By looking up the installed resistance map it is known which resistance inside the tool has worn out, i.e. to what extent the tool has worn out.
The judgment process of the positions of the worn cutters on the cutter head in the implementation is as follows:
the detection system is arranged on n cutters arranged on the same cutter head, namely, the micro resistors 105 are arranged In the n cutters, the n cutters are respectively numbered as C1 and C2 … Cn according to a certain rule, the sensors 102 corresponding to the cutters are respectively numbered as I1 and I2 … In, signals are sent to the signal receiver 3 through the signal transmitter 2, and the abrasion of the cutter arranged on the cutter head can be known through the current value received by the signal receiver 3, and the abrasion condition of the specific cutter is judged through resistance calculation.
By arranging two micro resistors 105 with different resistance values in the same layer of the cutter, whether the cutter is eccentric or not can be effectively judged, and an alarm unit 505 in the display terminal 5 is used for realizing eccentric alarm. A limit value is set for the tool wear and, in turn, an excessive wear warning can be displayed by 505 in the display terminal 5.
The technical contents not described in detail in the present invention are all known techniques.
Claims (10)
1. A shield machine cutter abrasion detection system is characterized by comprising a plurality of micro resistors, a plurality of micro batteries, a sensor, a signal transmitter and a signal receiver, wherein the micro resistors are arranged in the same cutter of a shield machine, the number of the micro resistors is opposite to the number of layers of the cutter of the shield machine, the micro resistors are connected in parallel through electric wires to form an equivalent resistor, the electric wires are arranged in the cutter layer of the shield machine, and the equivalent resistor is connected with the micro batteries and the sensor in series; the sensor is in wireless connection with the signal transmitter, the signal transmitter is adaptive to the signal receiver, the signal output end of the signal receiver is connected with the input end of the processor, and the output end of the processor is electrically connected with the signal input end of the display terminal.
2. The system of claim 1, wherein at least two micro resistors are disposed in each layer of the cutter of the shield machine, at least two independent equivalent circuits are formed in the cutter of the shield machine, and a plurality of equivalent circuits are connected in series with the micro battery and the sensor.
3. The system of claim 2, wherein the plurality of micro resistors in each layer of the cutter of the shield machine are respectively disposed on both sides of the cutter.
4. The system for detecting wear of a shield tunneling machine cutter according to claim 1, wherein there is a difference between the resistances of the plurality of micro resistors, and the resistances of the micro resistors are arranged in an increasing or decreasing order according to the number of layers of the cutter of the shield tunneling machine.
5. The system of claim 1, wherein the plurality of cutters of the shield machine are provided with the detection system, and the sensors in the plurality of detection systems are provided with corresponding reference numerals.
6. The system for detecting the wear of the shield tunneling machine cutter according to claim 5, wherein the display terminal has an alarm unit, a sensor mark display unit, and a corresponding current value display unit and a corresponding resistance value display unit.
7. The system of claim 6, wherein the alarm unit comprises an excessive wear sub-unit and an abnormal wear sub-unit.
8. The system of claim 7, wherein the excessive wear sub-unit is configured to wear the cutter of the shield machine by more than 25 mm.
9. The system of claim 1, wherein the sensor is a Hall sensor, and the Hall sensor is installed in a cutter of the shield machine.
10. The system of claim 1, wherein the micro battery is a constant voltage battery.
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| CN201922389578.1U CN211602771U (en) | 2019-12-26 | 2019-12-26 | Shield constructs machine cutter wearing and tearing detecting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077033A (en) * | 2019-12-26 | 2020-04-28 | 青岛科技大学 | Shield constructs machine cutter wearing and tearing detecting system |
| CN113588475A (en) * | 2021-08-03 | 2021-11-02 | 标格达精密仪器（广州）有限公司 | Intelligent paint film scratch tester and test method |
| CN115277792A (en) * | 2022-09-26 | 2022-11-01 | 湖南师范大学 | Cutter and abrasion on-line monitoring device thereof |
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2019
- 2019-12-26 CN CN201922389578.1U patent/CN211602771U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077033A (en) * | 2019-12-26 | 2020-04-28 | 青岛科技大学 | Shield constructs machine cutter wearing and tearing detecting system |
| CN113588475A (en) * | 2021-08-03 | 2021-11-02 | 标格达精密仪器（广州）有限公司 | Intelligent paint film scratch tester and test method |
| CN113588475B (en) * | 2021-08-03 | 2024-03-22 | 标格达精密仪器（广州）有限公司 | Intelligent paint film scratch tester and testing method |
| CN115277792A (en) * | 2022-09-26 | 2022-11-01 | 湖南师范大学 | Cutter and abrasion on-line monitoring device thereof |
| CN115277792B (en) * | 2022-09-26 | 2023-01-06 | 湖南师范大学 | Cutter and abrasion on-line monitoring device thereof |
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