A device for detecting wear of a cutting tool and a shield cutter

Abstract

The disclosure provides a cutter wear detection device and a shield cutter head. The cutter wear detection device comprises a detection oil cylinder, the detection oil cylinder is arranged on one side of a cutter, and a piston rod of the detection oil cylinder is arranged opposite to a cutter ring of the cutter along a radial direction of the cutter; a driving system, the driving system is in transmission connection with the detection oil cylinder, and the driving system is used for driving the piston rod of the detection oil cylinder to stretch and retract along the radial direction of the cutter; a detection module, the detection module is used for detecting an extension amount of the piston rod in the detection oil cylinder; and a control module, the control module is used for recording the extension amount when the piston rod of the detection oil cylinder and the cutter ring abut. In the cutter wear detection device and the shield cutter head, the diameter change of the cutter ring can be accurately obtained according to the extension amount change of the piston rod of the detection oil cylinder, and the wear degree of the cutter ring can be accurately determined.

Description

Technical Field

[0001] This disclosure relates to the field of cutter wear detection technology, and in particular to a cutter wear detection device and a tunnel boring machine cutterhead. Background Technology

[0002] The cutterhead cutters on a tunnel boring machine (TBM) are the core cutting tools during the tunneling process, playing a crucial role, especially in hard rock formations. As the cutterhead cutters continuously cut, their diameter decreases due to wear. Excessively worn cutters can no longer meet cutting requirements and need to be replaced. Therefore, it is essential to accurately detect the wear level of the cutterhead cutters to determine the optimal replacement time, ensuring stable and efficient tunneling operations. Summary of the Invention

[0003] This disclosure aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, the purpose of this disclosure is to provide a roller cutter wear detection device and a tunnel boring machine cutterhead.

[0005] To achieve the above objectives, the first aspect of this disclosure provides a hob wear detection device, comprising: a detection cylinder disposed on one side of the hob, wherein the piston rod of the detection cylinder is disposed radially opposite to the cutter ring of the hob; a drive system connected to the detection cylinder, wherein the drive system is used to drive the piston rod of the detection cylinder to extend and retract radially along the hob; a detection module used to detect the extension amount of the piston rod in the detection cylinder; and a control module connected to the signal input terminal of the drive system, wherein the signal input terminal of the control module is connected to the signal output terminal of the detection module, and the control module is used to record the extension amount when the piston rod of the detection cylinder abuts against the cutter ring of the hob.

[0006] Optionally, the drive system includes: a hydraulic station for providing pressurized hydraulic fluid; a directional valve, the first end of which is connected to the outlet end of the hydraulic station, the second end of which is connected to the return end of the hydraulic station, the third end of which is connected to the rodless chamber of the detection cylinder, and the fourth end of which is connected to the rod chamber of the detection cylinder; wherein, the signal output end of the control module is connected to the signal input end of the directional valve, and the control module is used to control the first and third ends of the directional valve to be connected and the second and fourth ends to be connected, or to control the first and fourth ends of the directional valve to be connected and the second and third ends to be connected.

[0007] Optionally, the detection device further includes a pressure sensor, the detection end of which is disposed between the third end of the reversing valve and the rodless chamber of the detection cylinder, and the pressure sensor is used to detect the oil pressure in the rodless chamber of the detection cylinder; wherein, the signal input end of the control module is connected to the signal output end of the pressure sensor.

[0008] Optionally, the detection module includes a flow sensor, the detection end of which is disposed between the third end of the reversing valve and the rodless chamber of the detection cylinder, and the flow sensor is used to detect the oil flow rate in the rodless chamber of the detection cylinder; wherein, the signal input end of the control module is connected to the signal output end of the flow sensor.

[0009] Optionally, the detection module includes: a synchronizing cylinder, wherein the rodless chamber of the synchronizing cylinder is connected to the third end of the reversing valve, and the rod chamber of the synchronizing cylinder is connected to the fourth end of the reversing valve; a first stroke sensor, wherein the first stroke sensor is disposed in the synchronizing cylinder, and the first stroke sensor is used to detect the extension amount of the piston rod of the synchronizing cylinder; wherein the signal input terminal of the control module is connected to the signal output terminal of the first stroke sensor.

[0010] Optionally, the drive system further includes: a relief valve, wherein the relief valve is disposed between the first end of the directional valve and the oil outlet end of the hydraulic station, and the inlet end of the relief valve is connected to the oil outlet end of the hydraulic station, the outlet end of the relief valve is connected to the first end of the directional valve, and the overflow end of the relief valve is connected to the return end of the hydraulic station.

[0011] Optionally, the detection module includes a second stroke sensor, which is disposed inside the detection cylinder and is used to detect the extension amount of the piston rod of the detection cylinder; wherein the signal input terminal of the control module is connected to the signal output terminal of the second stroke sensor.

[0012] Optionally, the detection module further includes: a first wireless communication module disposed inside the detection cylinder, wherein the signal input terminal of the first wireless communication module is connected to the signal output terminal of the second stroke sensor; and a second wireless communication module, wherein the signal input terminal of the second wireless communication module communicates wirelessly with the signal output terminal of the first wireless communication module, and the signal output terminal of the second wireless communication module is connected to the signal input terminal of the control module.

[0013] Optionally, the hob is rotatably mounted on the tool box, and the detection cylinder is mounted on the tool box and located on one side of the hob.

[0014] A second aspect of this disclosure provides a tunnel boring machine cutterhead, including: a cutter wear detection device as provided in the first aspect of this disclosure.

[0015] The technical solution provided in this disclosure may include the following beneficial effects:

[0016] When the piston rod of the detection cylinder comes into contact with the cutter ring of the cutter, the control module uses the detection module to record the extension amount of the piston rod of the detection cylinder. This allows the control module to accurately obtain the diameter change of the cutter ring based on the change in the extension amount of the piston rod, and thus accurately determine the wear degree of the cutter ring. Based on the wear degree of the cutter ring, the control module can determine the optimal replacement time for the cutter, thereby ensuring stable and efficient tunneling operations.

[0017] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of a hob wear detection device according to an embodiment of this disclosure (when the hob is initially installed);

[0020] Figure 2 This is a schematic diagram of the structure of a hob wear detection device according to an embodiment of this disclosure (during wear detection);

[0021] Figure 3 This is a schematic diagram of the hydraulic circuit of a hobbing cutter wear detection device according to an embodiment of this disclosure;

[0022] Figure 4 This is a circuit diagram of a hob wear detection device according to an embodiment of the present disclosure;

[0023] As shown in the figure: 1. Inspect the hydraulic cylinder;

[0024] 2. Drive system; 21. Hydraulic station; 22. Directional control valve; 23. Relief valve;

[0025] 3. Detection module; 31. Flow sensor; 32. Synchronous cylinder; 33. First stroke sensor; 34. Second stroke sensor; 35. First wireless communication module; 36. Second wireless communication module.

[0026] 4. Control module; 5. Pressure sensor;

[0027] 100, hobbing cutter; 200, tool box. Detailed Implementation

[0028] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, this disclosure provides a wear detection device for a hob 100, including: a detection cylinder 1, a drive system 2, a detection module 3, and a control module 4. The detection cylinder 1 is disposed on one side of the hob 100, and the piston rod of the detection cylinder 1 is arranged opposite to the cutter ring of the hob 100 along the radial direction of the hob 100. The drive system 2 is connected to the detection cylinder 1, and the drive system 2 is used to drive the piston rod of the detection cylinder 1 to extend and retract along the radial direction of the hob 100. The detection module 3 is used to detect the extension amount of the piston rod in the detection cylinder 1. The signal output terminal of the control module 4 is connected to the signal input terminal of the drive system 2, and the signal input terminal of the control module 4 is connected to the signal output terminal of the detection module 3. The control module 4 is used to record the extension amount when the piston rod of the detection cylinder 1 and the cutter ring of the hob 100 come into contact.

[0030] Understandably, since the detection cylinder 1 is located on one side of the hob 100, and the piston rod of the detection cylinder 1 is arranged radially relative to the cutter ring of the hob 100, the drive system 2 is connected to the detection cylinder 1, enabling the drive system 2 to drive the piston rod of the detection cylinder 1 to extend and retract radially along the hob 100. Furthermore, when the piston rod of the detection cylinder 1 extends, it can abut against the cutter ring of the hob 100; when the piston rod of the detection cylinder 1 retracts, it avoids affecting the rotation of the hob 100. Also, since the signal output terminal of the control module 4 is connected to the signal input terminal of the drive system 2, and the signal input terminal of the control module 4 is connected to the signal output terminal of the detection module 3, the control module 4 can control the drive system 2 to drive the piston rod of the detection cylinder 1 to extend and retract, and during the extension and retraction process, the detection module 3 can obtain the extension amount of the piston rod in the detection cylinder 1.

[0031] Based on this, when the piston rod of the detection cylinder 1 abuts against the cutter ring of the cutter 100, the control module 4 uses the detection module 3 to record the extension amount of the piston rod of the detection cylinder 1. Thus, it can accurately obtain the diameter change of the cutter ring of the cutter 100 based on the change in the extension amount of the piston rod of the detection cylinder 1, and then accurately determine the wear degree of the cutter ring of the cutter 100. Therefore, the optimal replacement time of the cutter 100 is determined based on the wear degree of the cutter ring of the cutter 100, thereby ensuring stable and efficient tunneling operations.

[0032] It should be noted that when the tunnel boring machine is in the segment assembly stage and the cutterhead is stopped, the piston rod of the detection cylinder 1 extends to detect the wear of the cutter head 100, with almost no interference between the cutter head 100 and the detection cylinder 1. Alternatively, measurements can be taken while the cutter head 100 is rotating. When the piston rod of the detection cylinder 1 extends and presses against the cutter ring of the cutter head 100, the piston rod stops extending, the extension amount is recorded, and then it is immediately retracted. For relatively small contact pressure, the impact on the rotation of the cutter head 100 is minimal.

[0033] The detection cylinder 1 is used for extension and retraction to detect the wear degree of the hob 100 by utilizing the contact between the piston rod and the cutter ring of the hob 100. The specific type of the detection cylinder 1 can be set according to actual needs and is not limited thereto. For example, the detection cylinder 1 is a general-purpose cylinder structure, and it has a rodless chamber and a rod chamber. When pressurized oil is filled into the rodless chamber, the piston rod extends; when pressurized oil is filled into the rod chamber, the piston rod retracts. The cylinder barrel of the detection cylinder 1 is arranged on the cutter box 200 of the hob 100. The piston rod of the detection cylinder 1 can be made of wear-resistant material. Seals or similar components can also be installed at the piston rod of the detection cylinder 1 to cope with the cutting environment at the hob 100.

[0034] The drive system 2 is used to drive the piston rod of the detection cylinder 1 to extend and retract. The specific type of the drive system 2 can be set according to actual needs and is not limited thereto. For example, the drive system 2 can be a hydraulic system that uses pressurized oil to drive the detection cylinder 1 to move.

[0035] The detection module 3 is used to detect the extension of the piston rod in the detection cylinder 1. The specific type of the detection module 3 can be set according to actual needs and there are no restrictions on it.

[0036] Control module 4 is used to obtain the wear degree of hob 100 by utilizing the control of drive system 2 and the detection of detection module 3. For example, when hob 100 is in the initial installation stage, control module 4 controls drive system 2 to drive the piston rod of detection cylinder 1 to extend and abut against the cutter ring of hob 100. Control module 4 uses detection module 3 to record the extension amount at this time as the initial extension amount. When hob 100 is in the running stage, control module 4 controls drive system 2 to drive the piston rod of detection cylinder 1 to extend and abut against the cutter ring of hob 100. Control module 4 uses detection module 3 to record the extension amount at this time as the actual extension amount. The difference between the initial extension amount and the actual extension amount is calculated as the wear amount. When the wear amount exceeds the preset wear value, it is determined that the wear degree of hob 100 is too large and needs to be replaced. The specific type of control module 4 can be set according to actual needs and is not limited thereto. For example, control module 4 can be a controller, etc.

[0037] like Figure 3As shown, in some embodiments, the drive system 2 includes a hydraulic station 21 and a directional valve 22. The hydraulic station 21 provides pressurized hydraulic fluid. The first end of the directional valve 22 is connected to the outlet end of the hydraulic station 21, and the second end of the directional valve 22 is connected to the return end of the hydraulic station 21. The third end of the directional valve 22 is connected to the rodless chamber of the detection cylinder 1, and the fourth end of the directional valve 22 is connected to the rod chamber of the detection cylinder 1. The signal output end of the control module 4 is connected to the signal input end of the directional valve 22, and the control module 4 is used to control the first and third ends of the directional valve 22 to be connected, as well as the second and fourth ends to be connected, or to control the first and fourth ends of the directional valve 22 to be connected, as well as the second and third ends to be connected.

[0038] Understandably, when control module 4 controls the first and third ends of directional valve 22 to be open, as well as the second and fourth ends to be open, the oil outlet of hydraulic station 21 is connected to the rodless chamber of detection cylinder 1, and the oil return end of hydraulic station 21 is connected to the rod chamber of detection cylinder 1. Thus, under the action of the pressurized oil provided by hydraulic station 21, the piston rod of detection cylinder 1 is extended. When control module 4 controls the first and fourth ends of directional valve 22 to be open, as well as the second and third ends to be open, the oil outlet of hydraulic station 21 is connected to the rod chamber of detection cylinder 1, and the oil return end of hydraulic station 21 is connected to the rodless chamber of detection cylinder 1. Thus, under the action of the pressurized oil provided by hydraulic station 21, the piston rod of detection cylinder 1 is retracted.

[0039] It should be noted that the hydraulic station 21 is used to provide pressurized hydraulic fluid. The specific type of hydraulic station 21 can be configured according to actual needs and is not limited thereto. For example, the hydraulic station 21 includes an oil tank for storing hydraulic fluid and a booster pump for pressurizing and delivering the hydraulic fluid. In addition, the hydraulic station 21 may also be configured with other functional valve groups.

[0040] The directional valve 22 is used to switch the oil circuit to cooperate with the hydraulic station 21 to realize the extension and retraction control of the detection cylinder 1. The directional valve 22 has a first end (oil inlet), a second end (oil return), a third end (port A) and a fourth end (port B). The specific type of directional valve 22 can be set according to actual needs and there is no restriction on it.

[0041] like Figure 3 As shown, in some embodiments, the detection device further includes a pressure sensor 5. The detection end of the pressure sensor 5 is disposed between the third end of the reversing valve 22 and the rodless chamber of the detection cylinder 1, and the pressure sensor 5 is used to detect the oil pressure in the rodless chamber of the detection cylinder 1. The signal input end of the control module 4 is connected to the signal output end of the pressure sensor 5.

[0042] Understandably, since the detection end of the pressure sensor 5 is located between the third end of the reversing valve 22 and the rodless chamber of the detection cylinder 1, and the signal input end of the control module 4 is connected to the signal output end of the pressure sensor 5, the control module 4 can use the pressure sensor 5 to obtain the oil pressure in the rodless chamber of the detection cylinder 1. This facilitates the determination of the contact state between the piston rod of the detection cylinder 1 and the cutter ring of the hob 100 based on the oil pressure in the rodless chamber of the cylinder, thereby achieving accurate detection of the wear degree of the hob 100.

[0043] For example, when the oil pressure in the rodless chamber of the detection cylinder 1 reaches the preset pressure value, the control module 4 determines that the piston rod of the detection cylinder 1 and the cutter ring of the hob 100 are in contact, records the extension amount of the piston rod at this time, and controls the drive system 2 to drive the piston rod of the detection cylinder 1 to retract.

[0044] It should be noted that the pressure sensor 5 is used to detect the oil pressure in the rodless chamber of the hydraulic cylinder 1. The specific type of pressure sensor 5 can be set according to actual needs, and there are no restrictions on it.

[0045] like Figure 3 As shown, in some embodiments, the detection module 3 includes a flow sensor 31, the detection end of which is disposed between the third end of the reversing valve 22 and the rodless chamber of the detection cylinder 1, and the flow sensor 31 is used to detect the oil flow rate in the rodless chamber of the detection cylinder 1. The signal input end of the control module 4 is connected to the signal output end of the flow sensor 31.

[0046] It is understandable that, since the detection end of the flow sensor 31 is located between the third end of the reversing valve 22 and the rodless chamber of the detection cylinder 1, and the signal input end of the control module 4 is connected to the signal output end of the flow sensor 31, the control module 4 can use the flow sensor 31 to obtain the oil flow rate of the rodless chamber of the detection cylinder 1, thereby facilitating the calculation of the piston rod extension of the detection cylinder 1 based on the oil flow rate of the rodless chamber of the detection cylinder 1, and thus achieving accurate detection of the wear degree of the hob 100.

[0047] In addition, by using the flow sensor 31 to obtain the piston rod extension of the detection cylinder 1, the sensor is not placed at the detection cylinder 1, which not only ensures high detection accuracy, but also saves the trouble of dealing with the complex environment at the hobbing cutter 100.

[0048] Among them, the oil flow rate in the rodless chamber of the detection cylinder 1 is positively correlated with the extension of the piston rod. The greater the oil flow rate in the rodless chamber, the greater the extension of the piston rod, and vice versa.

[0049] It should be noted that the flow sensor 31 is used to detect the oil flow rate in the rodless chamber of the hydraulic cylinder 1. The specific type of the flow sensor 31 can be set according to actual needs and there are no restrictions on it.

[0050] like Figure 3 As shown, in some embodiments, the detection module 3 includes a synchronizing cylinder 32 and a first stroke sensor 33. The rodless chamber of the synchronizing cylinder 32 is connected to the third end of the reversing valve 22, and the rod chamber of the synchronizing cylinder 32 is connected to the fourth end of the reversing valve 22. The first stroke sensor 33 is disposed inside the synchronizing cylinder 32 and is used to detect the extension amount of the piston rod of the synchronizing cylinder 32. The signal input terminal of the control module 4 is connected to the signal output terminal of the first stroke sensor 33.

[0051] Understandably, since the rodless chamber of the synchronizing cylinder 32 is connected to the third end of the reversing valve 22, and the rod chamber of the synchronizing cylinder 32 is connected to the fourth end of the reversing valve 22, the synchronizing cylinder 32 and the detection cylinder 1 are connected in parallel in the oil circuit. Thus, when the piston rod of the detection cylinder 1 is driven to extend and retract under the cooperation of the hydraulic station 21 and the reversing valve 22, the extension rod of the synchronizing cylinder 32 also extends and retracts synchronously with the piston rod of the detection cylinder 1. Furthermore, since the first stroke sensor 33 is installed inside the synchronizing cylinder 32, and the signal input terminal of the control module 4 is connected to the signal output terminal of the first stroke sensor 33, the control module 4 can use the first stroke sensor 33 to obtain the extension amount of the piston rod of the synchronizing cylinder 32. Based on the synchronous action of the synchronizing cylinder 32 and the detection cylinder 1, the extension amount of the piston rod of the synchronizing cylinder 32 is the same as the extension amount of the piston rod of the detection cylinder 1, thereby achieving accurate detection of the wear degree of the hob 100.

[0052] In addition, by using the synchronous cylinder 32 and the first stroke sensor 33 to obtain the piston rod extension of the detection cylinder 1, the sensor is avoided at the detection cylinder 1, which not only ensures high detection accuracy, but also saves the trouble of dealing with the complex environment at the hob 100.

[0053] It should be noted that the synchronizing cylinder 32 is the same as the detection cylinder 1, and is used to extend and retract synchronously under the same hydraulic circuit control.

[0054] The first stroke sensor 33 is used to detect the extension of the piston rod of the synchronous cylinder 32. The specific type of the first stroke sensor 33 can be set according to actual needs and there is no limitation. For example, the first stroke sensor 33 can be a magnetostrictive sensor, a pull-string encoder, etc.

[0055] like Figure 3As shown, in some embodiments, the drive system 2 further includes: a relief valve 23, which is disposed between the first end of the directional valve 22 and the oil outlet end of the hydraulic station 21, and the inlet end of the relief valve 23 is connected to the oil outlet end of the hydraulic station 21, the outlet end of the relief valve 23 is connected to the first end of the directional valve 22, and the overflow end of the relief valve 23 is connected to the return end of the hydraulic station 21.

[0056] Understandably, since the inlet end of the relief valve 23 is connected to the outlet end of the hydraulic station 21, and the outlet end of the relief valve 23 is connected to the first end of the reversing valve 22, and the overflow end of the relief valve 23 is connected to the return end of the hydraulic station 21, the relief valve 23 can overflow and relieve pressure when the pressure in the oil circuit is too high, thereby avoiding damage to the components caused by excessive contact force between the telescopic rod of the detection cylinder 1 and the cutter ring of the hob 100.

[0057] For example, when the oil outlet of hydraulic station 21 is connected to the rodless chamber of detection cylinder 1, and the oil return of hydraulic station 21 is connected to the rod chamber of detection cylinder 1, if the pressure at the oil outlet of hydraulic station 21 is too high, for example, exceeding the overflow pressure value, the overflow end of overflow valve 23 will be connected to provide pressure relief protection, thus preventing jamming between the telescopic rod of detection cylinder 1 and the cutter ring of hob 100.

[0058] It should be noted that the relief valve 23 is used for pressure relief protection of the oil circuit. The specific type of relief valve 23 can be set according to actual needs and is not limited thereto. The relief pressure value of the relief valve 23 is greater than the preset pressure value corresponding to the oil in the rodless chamber of the detection cylinder 1.

[0059] like Figure 4 As shown, in some embodiments, the detection module 3 includes a second stroke sensor 34, which is disposed inside the detection cylinder 1 and is used to detect the extension amount of the piston rod of the detection cylinder 1. The signal input terminal of the control module 4 is connected to the signal output terminal of the second stroke sensor 34.

[0060] It is understandable that, since the second stroke sensor 34 is installed inside the detection cylinder 1 and the signal input terminal of the control module 4 is connected to the signal output terminal of the second stroke sensor 34, the control module 4 can use the second stroke sensor 34 to obtain the piston rod extension amount of the detection cylinder 1, thereby achieving accurate detection of the wear degree of the hob 100.

[0061] It should be noted that the second stroke sensor 34 is used to detect the extension of the piston rod of the detection cylinder 1. The specific type of the second stroke sensor 34 can be set according to actual needs and there is no limitation on it.

[0062] like Figure 4As shown, in some embodiments, the detection module 3 further includes: a first wireless communication module 35 and a second wireless communication module 36. The first wireless communication module 35 is disposed inside the detection cylinder 1, and the signal input terminal of the first wireless communication module 35 is connected to the signal output terminal of the second stroke sensor 34. The signal input terminal of the second wireless communication module 36 communicates wirelessly with the signal output terminal of the first wireless communication module 35, and the signal output terminal of the second wireless communication module 36 is connected to the signal input terminal of the control module 4.

[0063] It is understandable that, since the signal input terminal of the first wireless communication module 35 is connected to the signal output terminal of the second stroke sensor 34, and the signal input terminal of the second wireless communication module 36 is connected to the signal output terminal of the first wireless communication module 35 for wireless communication, and the signal output terminal of the second wireless communication module 36 is connected to the signal input terminal of the control module 4, the second stroke sensor 34 and the control module 4 can achieve wireless communication through the cooperation of the first wireless communication module 35 and the second wireless communication module 36. This avoids the need to arrange lines for the second stroke sensor 34 to transmit data to the outside, and ensures that the second stroke sensor 34 is adaptable to the cutting environment of the hob 100.

[0064] It should be noted that the second stroke sensor 34 achieves wireless communication with the control module 4 through the cooperation of the first wireless communication module 35 and the second wireless communication module 36. The specific types of the first wireless communication module 35 and the second wireless communication module 36 can be set according to actual needs, and there are no restrictions on this.

[0065] Among them, based on wireless communication, the second stroke sensor 34 can be sealed inside the detection cylinder 1 without the need for additional data transmission lines.

[0066] like Figure 1 and Figure 2 As shown, in some embodiments, the hob 100 is rotatably mounted on the tool box 200, and the detection cylinder 1 is mounted on the tool box 200 and located on one side of the hob 100.

[0067] It is understandable that since the hob 100 is rotatably mounted on the tool box 200, and the detection cylinder 1 is mounted on the tool box 200 and located on one side of the hob 100, the detection cylinder 1 can be stably positioned at the cutter ring of the hob 100, thereby ensuring accurate detection of the wear degree of the hob 100.

[0068] It should be noted that the tool box 200 is used to support the hob 100, which is rotatably arranged in the tool box 200 using a rotating shaft, pressure block, etc.

[0069] This disclosure also proposes a tunnel boring machine cutterhead, including: a wear detection device for the roller cutter 100 as described in this disclosure.

[0070] Understandably, when the piston rod of the detection cylinder 1 abuts against the cutter ring of the cutter 100, the control module 4 uses the detection module 3 to record the extension amount of the piston rod of the detection cylinder 1. This allows the control module 4 to accurately obtain the diameter change of the cutter ring of the cutter 100 based on the change in the extension amount of the piston rod of the detection cylinder 1, thereby accurately determining the wear degree of the cutter ring of the cutter 100. Based on the wear degree of the cutter ring of the cutter 100, the optimal replacement time of the cutter 100 can be determined, thus ensuring stable and efficient tunneling operations.

[0071] It should be noted that in the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0072] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A hob wear detection device, characterized in that, include: A detection cylinder is provided on one side of the hob, and the piston rod of the detection cylinder is arranged opposite to the cutter ring of the hob along the radial direction of the hob. A drive system is connected to the detection cylinder, and the drive system is used to drive the piston rod of the detection cylinder to extend and retract radially along the hob. A detection module, wherein the detection module is used to detect the extension amount of the piston rod in the detection cylinder; The control module has its signal output terminal connected to the signal input terminal of the drive system, and its signal input terminal connected to the signal output terminal of the detection module. The control module is used to record the extension amount when the piston rod of the detection cylinder and the hobbing cutter ring come into contact.

2. The hob wear detection device according to claim 1, characterized in that, The drive system includes: The hydraulic station is used to provide pressurized hydraulic fluid; A directional control valve, wherein the first end of the directional control valve is connected to the oil outlet end of the hydraulic station, the second end of the directional control valve is connected to the oil return end of the hydraulic station, the third end of the directional control valve is connected to the rodless chamber of the detection cylinder, and the fourth end of the directional control valve is connected to the rod chamber of the detection cylinder. The signal output terminal of the control module is connected to the signal input terminal of the reversing valve, and the control module is used to control the first and third terminals and the second and fourth terminals of the reversing valve to be connected, or to control the first and fourth terminals and the second and third terminals of the reversing valve to be connected.

3. The hob wear detection device according to claim 2, characterized in that, The detection device further includes: A pressure sensor, wherein the detection end of the pressure sensor is disposed between the third end of the reversing valve and the rodless chamber of the detection cylinder, and the pressure sensor is used to detect the oil pressure in the rodless chamber of the detection cylinder; The signal input terminal of the control module is connected to the signal output terminal of the pressure sensor.

4. The hob wear detection device according to claim 2, characterized in that, The detection module includes: A flow sensor, wherein the detection end of the flow sensor is disposed between the third end of the reversing valve and the rodless chamber of the detection cylinder, and the flow sensor is used to detect the oil flow rate in the rodless chamber of the detection cylinder; The signal input terminal of the control module is connected to the signal output terminal of the flow sensor.

5. The hob wear detection device according to claim 2, characterized in that, The detection module includes: A synchronizing cylinder, wherein the rodless chamber of the synchronizing cylinder is connected to the third end of the reversing valve, and the rod chamber of the synchronizing cylinder is connected to the fourth end of the reversing valve; A first stroke sensor is disposed inside the synchronizing cylinder, and the first stroke sensor is used to detect the extension amount of the piston rod of the synchronizing cylinder; The signal input terminal of the control module is connected to the signal output terminal of the first travel sensor.

6. The hob wear detection device according to claim 2, characterized in that, The drive system also includes: An overflow valve is provided, wherein the overflow valve is disposed between the first end of the directional valve and the oil outlet end of the hydraulic station, and the inlet end of the overflow valve is connected to the oil outlet end of the hydraulic station, the outlet end of the overflow valve is connected to the first end of the directional valve, and the overflow end of the overflow valve is connected to the return end of the hydraulic station.

7. The hob wear detection device according to claim 1, characterized in that, The detection module includes: The second stroke sensor is disposed inside the detection cylinder and is used to detect the extension amount of the piston rod of the detection cylinder. The signal input terminal of the control module is connected to the signal output terminal of the second travel sensor.

8. The hob wear detection device according to claim 7, characterized in that, The detection module also includes: A first wireless communication module is disposed inside the detection cylinder, and the signal input terminal of the first wireless communication module is connected to the signal output terminal of the second stroke sensor. The second wireless communication module has its signal input terminal wirelessly connected to the signal output terminal of the first wireless communication module, and its signal output terminal is connected to the signal input terminal of the control module.

9. The hob wear detection device according to claim 1, characterized in that, The hob is rotatably mounted on the tool box, and the detection cylinder is mounted on the tool box and located on one side of the hob.

10. A shield tunneling cutterhead, characterized in that, include: The hob wear detection device as described in any one of claims 1-9.

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