TBM hob stress real-time monitoring system

Abstract

The utility model discloses a TBM hob stress real-time monitoring system, comprising a terminal installed in a TBM cutter box and used for obtaining TBM hob force and a rotation angle; the central end is mounted on the inner wall of the TBM shield body and is in communication connection with the terminal; the center end is used for receiving and transmitting TBM hob force monitoring data and sensor angle information; the upper computer is installed in a TBM control room and is in communication connection with the center end; and the upper computer is used for storing and processing the hob force and angle monitoring data and visually displaying the data. The system can be installed on the TBM under the condition that the original design of the TBM is not affected, the real-time stress data of the cutter in the tunneling process of the TBM are monitored, the automation degree of the collecting process is high, and the stress condition of the cutter can be rapidly fed back to TBM operators. Monitoring data are real and reliable, and a basis can be provided for rock mass condition and cutterhead working state recognition and quantitative analysis.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction information, in particular to a TBM cutter force real-time monitoring system. Background Art

[0002] The cutter is a key component of the TBM rock breaking and advancement. During the excavation process, the TBM drive and propulsion system continuously loads the tunnel face through the cutter. Under the continuous action of the cutter load, cracks inside the rock mass develop and penetrate, and rock flakes are produced on the tunnel face. The force characteristics of the cutter can reflect the working status of the cutter and the rock mass conditions on the tunnel face. Therefore, real-time monitoring of the force of the cutter is of great significance for the staff to dynamically control the operating status of the equipment and adjust the construction strategy in time.

[0003] Theoretical calculation is one of the feasible methods for tool load estimation, which uses rock mass and TBM equipment parameters to calculate the tool force. However, this method usually assumes that each tool is subjected to uniform force, and the theoretical value obtained by calculation is very different from the real-time force of the tool during the actual rock breaking process.

[0004] Another approach is to use sensors to directly monitor the force of the cutter. By installing sensors inside the cutter structure, the force changes of the cutter during the excavation process can be directly monitored. In the existing cases of cutter force monitoring, there is no systematic monitoring solution, the monitoring data is discontinuous, and it is difficult to track the force of the cutter during the entire tunnel construction process. At the same time, the layout of the force monitoring sensor usually changes the original cutter structure, affecting the normal construction of the TBM. Utility Model Content

[0005] In order to overcome the shortcomings of the current real-time monitoring method for TBM cutter forces, the utility model aims to provide a real-time monitoring system for TBM cutter forces that can monitor the cutter forces for a long time and stably without changing the existing structure of the cutter.

[0006] The utility model adopts the following technical solutions:

[0007] A real-time monitoring system for TBM cutter force, comprising:

[0008] Terminal, installed in the TBM cutter box, used to obtain the TBM cutter force and rotation angle;

[0009] The center end is installed on the inner wall of the TBM shield and is connected to the terminal for communication; the center end is used to receive and transmit TBM cutter force monitoring data and sensor angle information;

[0010] The host computer is installed in the TBM control room and is connected to the central end for communication; the host computer is used for storage, processing and data visualization of the cutter force and angle monitoring data.

[0011] Furthermore, the terminal includes a C-type force sensor and a battery compartment, wherein a gyroscope, a power source, and a communication module are arranged in the battery compartment. The C-type force sensor is electrically connected to the battery compartment.

[0012] Furthermore, the C-block force sensor has the same size as the C-block in the TBM tool box and replaces the original C-block during installation.

[0013] Furthermore, a communication module is provided in the battery compartment, and the communication module is connected to the host computer for transmitting monitoring data and control commands. The C-type block force sensor uploads the collected TBM cutter force to the host computer through the communication module.

[0014] Furthermore, a gyroscope is provided in the battery compartment, and the gyroscope is used to monitor the rotation angle of the TBM cutter, obtain the position information of the C-type block force sensor on the tunnel face, and upload it to the host computer through the communication module.

[0015] Furthermore, a rechargeable power supply is provided in the battery compartment, and the rechargeable power supply supplies power for the C-type force sensor, the gyroscope and the communication module.

[0016] Furthermore, the host computer includes a control switch, and the control switch controls the operation of the host computer through telecommunication communication.

[0017] Furthermore, the host computer includes a storage device and a display device, which are electrically connected; the storage device is used to store complete TBM cutter force and rotation angle data, and is equipped with a data export port; the display device is used to display the TBM cutter force data after visualization processing.

[0018] The beneficial effects of the utility model are:

[0019] The system can be installed on the TBM without affecting the original design of the TBM, monitoring the real-time force data of the cutter during the TBM excavation process. The acquisition process is highly automated and can quickly feedback the force conditions of the cutter to the TBM operator. The monitoring data is authentic and reliable, and can provide a basis for the identification and quantitative analysis of rock mass conditions and cutterhead working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a TBM cutter force real-time monitoring system provided in an embodiment of the utility model.

[0022] Figure 2 It is a structural design diagram of a C-type block force sensor involved in an embodiment of the utility model.

[0023] Figure 3 It is a structural design diagram of a battery compartment involved in an embodiment of the utility model.

[0024] Figure 4 It is a schematic diagram of the installation of the C-type block force sensor involved in the embodiment of the utility model.

[0025] Figure 5 It is a structural diagram of the upper computer involved in the embodiment of the utility model.

[0026] Among them: 1. Terminal; 2. Center end; 3. Host computer; 4. Battery compartment; 5. Communication module; 6. Gyroscope; 7. Power supply; 8. C-type block force sensor; 9. Tool box; 10. TBM shield wall; 11. TBM control room; 12. Reserved hole; 13. Battery slot; 14. Circuit board slot; 15. Hollow tension bolt; 16. Tool shaft; 17. Control switch; 18. Display; 19. Memory; 20. Data interface. DETAILED DESCRIPTION

[0027] In order to make those of ordinary skill in the art better understand the technical solution of the present application, the technical solution in the embodiment of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present utility model can be implemented without the need for some of these specific details.

[0028] In the description of the present invention, it should be understood that the terms "normal", "rolling direction", "lateral", "inside", "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present utility model, it is necessary to understand that: communication, host computer, data display, etc. are technical carriers of the system structure, and the system as a whole is not improved by any improved program, protocol, algorithm, etc., which are not objects of the utility model; the following description of the embodiment is only to provide a better understanding of the present utility model by showing examples of the present utility model. The basic image capture, text uploading, communication methods, etc. involved in the description are the basis for the objective implementation of the technical carriers of the system structure, and are not technical improvement points.

[0030] like Figure 1 As shown, a TBM cutter force real-time monitoring system provided by an embodiment of the utility model includes: a terminal 1, a central terminal 2, and a host computer 3. The terminal 1 is installed in a TBM cutter box 9 for monitoring cutter force data and cutter rotation angle information; the central terminal 2 is installed on a TBM shield wall 10, and is connected in communication with the terminal 1 for receiving and transmitting cutter force data and cutter rotation angle information; the host computer 3 is installed in a TBM control room 11, and is connected in communication with the central terminal 3 for processing, storing collected data and visualizing the data.

[0031] like Figure 2 , Figure 3 As shown, the terminal 1 is composed of a C-block sensor 8 and a battery compartment 4. The C-block sensor 8 is made of high-strength composite titanium alloy and has the same size as the original tool box C-block. It can monitor the normal (X) force and rolling (Y) force of the hob transmitted by the cutter shaft. The reserved hole 12 is used for sensor fixing and wiring. The battery compartment 4 has a built-in communication module 5, a gyroscope 6 and a power supply 7. The communication module 5 and the gyroscope 6 are integrated on a circuit board and fixed by bolts in the circuit board slot 14 on the side of the battery compartment. The communication module 5 is connected to the center terminal 2 by wireless transmission to transmit and collect data and receive control commands issued by the host computer. The gyroscope 6 is responsible for collecting the information of the rotation angle of the hob during the excavation process, which is used to determine the position of the hob on the tunnel face. The power supply 7 is a rechargeable battery fixed in the battery compartment 13 to power the C-block sensor 8, the gyroscope 6, and the communication module 5. After the power is exhausted, the fixing bolts on the top of the battery compartment can be unscrewed for replacement.

[0032] like Figure 4 As shown, the prefabricated hollow tension bolt 15 passes through the reserved hole 12 to fix the C-block sensor 8 below the disc-shaped hob cutter shaft 16. The data and power lines of the C-block sensor 8 also pass through the prefabricated hollow tension bolt 15 and are connected to the battery compartment 4 welded and fixed to the inner side of the cutter box.

[0033] like Figure 1 , Figure 5 As shown, a host computer 3 is installed in the TBM control room 11, and the host computer 3 is connected to the center terminal 2 by wire. The control switch 17 is used to manually control the data acquisition process of the terminal 1 and adjust the acquisition mode of the terminal 1, including the acquisition frequency and the acquisition time. The acquisition data received by the host computer 3 is processed by the built-in algorithm and stored in the memory 19 in csv format, which can be read through the data interface 20. The stored data includes the acquisition time, normal force, rolling force, lateral force, angle, etc. The display 18 is used to display the visualization results of the acquisition data in real time.

[0034] The specific working principle of the above system is as follows:

[0035] The system has manual collection mode and automatic collection mode. The two working modes are independent of each other and do not interfere with each other.

[0036] In manual mode, after pressing the acquisition button of the control switch 17 of the host computer 3, the host computer 3 will issue an acquisition command, which will be transmitted to the terminal 1 through the central terminal 2. After receiving the command, the terminal 1 will start to collect the current hob force and angle data. The data acquisition frequency and acquisition time can be dynamically adjusted according to demand. After the acquisition is completed, the data will be automatically sent to the host computer 3.

[0037] In the automatic acquisition mode, terminal 1 automatically controls the entire data acquisition and transmission process. During the intervals of TBM excavation, terminal 1 will be in sleep mode. When excavation starts, after the angle data collected by gyroscope 6 changes continuously for more than 3 minutes, terminal 1 will automatically start collecting data in the same way as in the manual control mode. After the collection is completed, the data is automatically sent to the host computer 3. After the transmission is completed, terminal 1 will enter sleep mode again, thus completing an automatic data acquisition cycle.

[0038] The steps to obtain real-time data of hob force using the above system are as follows:

[0039] Step 1: Design a C-block sensor 8 of corresponding size according to the specifications of the TBM tool box 9, and equip it with a suitable data acquisition range, acquisition frequency, and acquisition time.

[0040] Step 2: Complete the installation of system terminal 1, center terminal 2, and host computer 3;

[0041] Step 3: Collect cutter force and angle data during TBM excavation in manual or automatic mode;

[0042] Step 4: The hob force and angle data are automatically transmitted to the host computer 3 , and after being visualized by the built-in algorithm, are displayed on the display 18 .

[0043] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0044] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or hammers), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0045] In addition, the terms used in any technical solution disclosed in the above utility model to indicate positional relationship or shape include the state or shape that is similar, similar or close to it unless otherwise stated. Any component provided by the utility model can be assembled from multiple separate components, or it can be a separate component manufactured by an integrated molding process.

[0046] The above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived from these are still within the scope of protection of the present invention.

Claims

1. A real-time monitoring system for TBM cutter force, characterized in that: include: Terminal, installed in the TBM cutter box, used to obtain the TBM cutter force and rotation angle; The center end is installed on the inner wall of the TBM shield and is connected to the terminal for communication; the center end is used to receive and transmit TBM cutter force monitoring data and sensor angle information; The host computer is installed in the TBM control room and is connected to the central end for communication; the host computer is used for storage, processing and data visualization of the cutter force and angle monitoring data.

2. A TBM cutter force real-time monitoring system according to claim 1, characterized in that: The terminal includes a C-type block force sensor and a battery compartment. A gyroscope, a power source, and a communication module are arranged in the battery compartment. The C-type block force sensor is electrically connected to the battery compartment.

3. A TBM cutter force real-time monitoring system according to claim 2, characterized in that: The C-block force sensor has the same size as the C-block in the TBM tool box and replaces the original C-block during installation.

4. A TBM cutter force real-time monitoring system according to claim 3, characterized in that: A communication module is provided in the battery compartment, and the communication module is connected to the host computer for transmitting monitoring data and control commands; the C-type block force sensor uploads the collected TBM cutter force to the host computer through the communication module.

5. A TBM cutter force real-time monitoring system according to claim 4, characterized in that: A gyroscope is provided in the battery compartment, and the gyroscope is used to monitor the rotation angle of the TBM cutter, obtain the position information of the C-type block force sensor on the tunnel face, and upload it to the host computer through the communication module.

6. A TBM cutter force real-time monitoring system according to claim 5, characterized in that: A rechargeable power source is provided in the battery compartment, and the rechargeable power source supplies power to the C-type force sensor, the gyroscope and the communication module.

7. A TBM cutter force real-time monitoring system according to claim 1, characterized in that: The host computer includes a control switch, and the control switch controls the operation of the host computer through telecommunication communication.

8. A TBM cutter force real-time monitoring system according to claim 7, characterized in that: The host computer includes a storage device and a display device, which are electrically connected; the storage device is used to store complete TBM cutter force and rotation angle data, and is equipped with a data export port; the display device is used to display the TBM cutter force data after visualization processing.

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