Variable-diameter portable TBM hob abrasion measuring device

Abstract

The utility model provides a diameter-variable portable TBM (Tunnel Boring Machine) hob abrasion measuring device, which belongs to the technical field of monitoring of TBM hob abrasion values in the tunnel engineering field, and adopts the scheme that the curvature of a flexible sliding rail is changed through a telescopic rod, so that the accurate measurement of the abrasion values of hobs with different diameters can be realized; meanwhile, according to the scheme, through detachable arrangement of a traditional hob monitoring gauge, the universality of the measuring device is effectively improved, and the measuring device can adapt to measurement of abrasion values of hobs with different section shapes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the monitoring technical field of TBM disc cutter wear value in the field of tunnel engineering, and particularly relates to a variable-diameter portable TBM disc cutter wear measuring device. BACKGROUND

[0002] TBM (Tunnel Boring Machine, tunnel boring machine) plays a very important role in traffic construction, cross-sea and cross-river and comprehensive pipe gallery engineering construction, and in the process of TBM tunneling, the disc cutter and the tunnel face need to be continuously rubbed and contacted to realize rock mass crushing and then make the TBM continuously advance. One work that must be carried out when workers shift is checking the cutter, that is, checking the wear value of each disc cutter and whether damage occurs. If single cutter damage or mismatch between cutters occurs, it will cause the reduction of TBM tunneling efficiency and even cause irreversible damage to the cutter head.

[0003] The traditional manual measurement method mainly monitors the wear value by the disc cutter monitoring gauge used by the on-site workers, and the wear value of the disc cutter is read by the subjective judgment of the naked eye. Since the daily wear value of the disc cutter is not obvious and the light condition in the cutter head is poor, the on-site construction personnel are prone to inaccurate grasp of the wear value of the disc cutter, which will affect the disc cutter replacement timing.

[0004] The existing automatic measurement methods mainly include built-in type and external measurement type. The built-in type measurement technology usually embeds a sensor in the disc cutter or modifies it into a magnetic material, and then measures the specific wear value of the disc cutter through an external receiver. This scheme has the following problems: 1) it can only measure a single disc cutter, which has certain limitations; 2) it has high cost and is difficult to popularize. The external measurement type measurement technology usually arranges a data acquisition and data sending module outside the disc cutter, and then outputs the wear value of the disc cutter after processing the signal. This scheme also has certain problems: 1) the construction environment in the cutter head is poor, and the rock mass moves irregularly, which affects the measurement effect of the equipment; 2) the cutter head rotates quickly when working, and it is difficult to supply power in the internal space. If the power supply line is damaged due to the rock, the monitoring equipment cannot work. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a variable-diameter portable TBM disc cutter wear measuring device to solve at least one technical problem in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a variable diameter portable TBM cutter wear measuring device, including the casing, with the casing inboard fixed connection's wear measuring module, with the casing inboard fixed connection's cutter clamping module and host computer,

[0008] The measuring module includes a flexible slide rail, a telescopic rod for controlling the curvature of the flexible slide rail, and a telescopic measuring rod moving radially along the flexible slide rail. The flexible slide rail is connected to the inside of the shell through a preset support. One end of the telescopic rod is fixedly connected to the preset support, and the other end is movably connected to the outside of the end of the flexible slide rail. One end of the telescopic measuring rod is movably connected to the flexible slide rail through a sliding block.

[0009] The cutter clamping module includes a clamping module and a cutter monitoring gauge detachably connected to the clamping module. The clamping module is fixedly connected to the shell through a preset support.

[0010] The host computer is electrically connected to the telescopic rod and the telescopic measuring rod.

[0011] Further, the cutter clamping module is located below the flexible slide rail and at the centerline position of the flexible slide rail.

[0012] Further, one end of the telescopic rod is movably connected to the outside of the end of the flexible slide rail through an X-shaped member. The X-shaped member includes an X-shaped body, and the ends of the X-shaped body are provided with wheel-type sliding blocks. The X-shaped body is movably connected to the guide rail provided outside the end of the flexible slide rail through the wheel-type sliding blocks.

[0013] Optionally, telescopic rods are provided outside both ends of the flexible slide rail. The telescopic rods are electric telescopic rods.

[0014] Optionally, the electric telescopic rod adopts a threaded transmission structure. The electric telescopic rod includes a first threaded rod, a second threaded rod, and a motor. The motor is fixed to the preset support. The end of the first threaded rod is fixedly connected to the rotor of the motor. The threads of the first threaded rod and the second threaded rod are closely fitted. The motor rotates to drive the second threaded rod to move up and down.

[0015] Optionally, the measuring module includes a first telescopic measuring rod and a second telescopic measuring rod. The first telescopic measuring rod and the second telescopic measuring rod are located on both sides of the cutter clamping module.

[0016] Optionally, when the first telescopic measuring rod and the second telescopic measuring rod slide along the flexible resistance track inside the flexible slide rail, they are symmetrically arranged along the centerline of the flexible slide rail.

[0017] Further, the curvature of the flexible slide rail after adjustment tends to be consistent with the center of the outermost edge of the original profile of the cutter to be measured.

[0018] Further, the wear measuring device further comprises a power module for power supply.

[0019] Further, the master controller is further connected with an interactive module for control instruction issuing, control data inputting and result displaying.

[0020] The utility model has the advantages of:

[0021] (1) the utility model discloses the scheme changes the curvature of flexible slide rail through telescopic link and can realize the accurate determination of the wear value of different diameter cutters.

[0022] (2) the scheme improves the universality of the device through the detachable setting of the cutter monitoring gauge, and can better adapt to the determination of the cutter wear value under different cross-sectional shapes, avoids the influence of visual error and other artificial subjective factors and light conditions and other objective environmental factors on the cutter wear reading, and can reduce the workload of the on-site construction personnel when checking the cutter, and improve the work efficiency of the workers when checking the cutter in the cutter head.

[0023] Additional aspects and advantages of the utility model will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0025] Figure 1 It is an external structure schematic view of the variable-diameter portable TBM cutter wear measuring device according to the utility model embodiment.

[0026] Figure 2 It is an internal structure schematic view of the variable-diameter portable TBM cutter wear measuring device according to the utility model embodiment.

[0027] Figure 3 It is an internal structure schematic view of the flexible slide rail and the telescopic measuring rod connection according to the utility model embodiment.

[0028] Figure 4 It is a slider structure schematic view of the movable connection between the telescopic measuring rod and the flexible slide rail according to the utility model embodiment.

[0029] Figure 5 An enlarged structural schematic view of the local structure A in the embodiment of the utility model; Figure 2

[0030] Figure 6 A structural schematic view of the hob monitoring gauge in the embodiment of the utility model;

[0031] Figure 7 An interactive module structural schematic view in the embodiment of the utility model;

[0032] Figure 8 A detection principle schematic view of the variable-diameter portable TBM hob wear measuring device in the embodiment of the utility model;

[0033] Wherein, 1, shell; 2, hob monitoring gauge; 2-1, monitoring gauge main body; 2-2, scale; 3, telescopic measuring rod; 4, interactive module; 4-1, instruction issuing module; 4-2, display module; 4-3, diameter setting module; 5, handle; 6, flexible slide rail; 7, telescopic rod; 8, preset support; 9, clamping module; 10, sliding block; 10-1, trolley main body; 10-2, trolley sliding wheel set; 10-3, power pack; 10-4, resistance sensor; 10-5, wireless transceiver; 11, flexible resistance track; 12, X-shaped component. DETAILED DESCRIPTION

[0034] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by means of the drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as a limitation on the utility model.

[0035] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as that generally understood by those skilled in the art to which the utility model belongs.

[0036] It should also be understood that terms such as those defined in a general dictionary should be understood as having meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as such.

[0037] ​It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is further understood that the terms "comprising," "including," "containing," and "having" and the like, when used in the specification, specify the presence of stated features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0038] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0039] In the description of the present specification, the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] In the description of the present specification, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present technology and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present technology.

[0041] Unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "setting" should be broadly understood, for example, it can be fixedly connected, set, or it can be detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present technology can be understood according to the specific circumstances.

[0042] In order to facilitate the understanding of the present application, the present application will be further explained and described in specific embodiments in conjunction with the drawings, and the specific embodiments do not constitute a limitation on the embodiments of the present application.

[0043] Those skilled in the art should understand that the drawings are only schematic views of the embodiments, and the components in the drawings are not necessarily essential for implementing the present application.

[0044] Term explanation:

[0045] Variable diameter: a way that can adapt to the change of the TBM cutter diameter, which can realize the universality of the cutter under different diameters of the TBM center cutter, surface cutter and edge cutter, and only needs to set the cutter diameter before measurement to determine the accurate wear value of the cutter.

[0046] Cutter: the cutter is a common cutter for rock breaking of the full-face tunneling machine, and is also the part of the TBM in contact with the rock face in the tunneling process, the TBM forms corresponding grooves on the rock face by rotating the cutter head and the cutter, and the cracks are formed by the extension of the groove cracks to make the rock body peel off to realize rock breaking.

[0047] Cutter monitoring gauge: the cutter will be worn during the rock breaking process, and the cutter detection gauge is a tool for monitoring the wear value of the cutter, which further reads the wear value of the cutter plane on the detection gauge after wear.

[0048] Flexible slide rail: made of flexible rubber with certain hardness, the two sides can slide up and down with the extension and retraction of the extension rod, so that the center of the flexible slide rail is better coincided with the center of the measured cutter.

[0049] Extension rod: a cylindrical structure that can be elongated or shortened, the lower end is combined with the flexible slide rail through a cylindrical connecting part, and the two extension rods are synchronously extended and retracted by the battery to ensure that the curvatures of the flexible slide rail are equal.

[0050] Resistance displacement sensor: its basic principle is to convert the change of the measured physical quantity (i.e. displacement) into the change of the resistance value corresponding to it, and then reflect the change of the measured quantity after the corresponding measurement circuit, this kind of sensor is a sensor type that can be customized by the skilled in the art according to the demand, which is not the focus of the present application, so it is not repeated here. In the scheme described in the present application, the resistance displacement sensor includes a resistance sensor and a wireless transceiver (using NRF24L01 wireless transceiver).

[0051] Measuring rod: the measuring rod described in the present application is a telescopic measuring rod for measuring the wear value, and its main structure adopts a split type digital dial gauge, which can realize accurate measurement of the wear value and further transmit the value to other receiving equipment through wireless or wired mode.

[0052] The present application mainly solves the following problems:

[0053] The existing roll cutter monitoring gauge used by the field workers to check the cutter has insufficient accuracy, and the reading of the roll cutter wear value is mainly based on the subjective judgment of the field construction personnel, which leads to the distortion of the read wear value. The existing portable roll cutter wear measuring equipment has limited adaptability, and it is difficult to achieve universal measurement of wear values between different diameters and different types of roll cutters.

[0054] As shown in Figure 1 and Figure 2 , in one or more embodiments, the present embodiment provides a variable-diameter portable TBM roll cutter wear measuring device, which comprises a shell 1, a wear measuring module fixedly connected to the inner side of the shell, a roll cutter clamping module fixedly connected to the inner side of the shell, and a main control unit;

[0055] The measuring module comprises a flexible slide rail 6, a telescopic rod 7 for controlling the curvature of the flexible slide rail, and a telescopic measuring rod 3 moving radially along the flexible slide rail; wherein the flexible slide rail 6 is connected to the inner side of the shell 1 through a preset support 8; one end of the telescopic rod 7 is fixedly connected to the preset support 8, and the other end is movably connected to the outer side of the end of the flexible slide rail 6; one end of the telescopic measuring rod 3 is movably connected to the flexible slide rail 6 through a sliding block;

[0056] The roll cutter clamping module comprises a clamping module 9 and a roll cutter monitoring gauge 2 (as shown in Figure 5 which shows the specific structure of the roll cutter monitoring gauge), which is detachably connected to the clamping module; wherein the clamping module 9 is fixedly connected to the shell 1 through a support;

[0057] The main control unit is electrically connected to the telescopic rod 7 and the telescopic measuring rod 3, respectively.

[0058] Further, in order to facilitate use, a handle 5 is provided on the top of the shell.

[0059] In specific implementation, as shown in A of Figure 2 , in order to facilitate viewing, a partial enlarged view of A of Figure 5 is provided as shown in Figure 2 , and as shown in Figure 5 , one end of the telescopic rod 7 is movably connected to the outer side of the end of the flexible slide rail 6 through an X-shaped member 12, wherein the X-shaped member 12 comprises an X-shaped body, the ends of the X-shaped body are provided with wheel-type sliding blocks, and the X-shaped body is movably connected to the guide rail provided on the outer side of the end of the flexible slide rail through the wheel-type sliding blocks.

[0060] Further, the telescopic rod 7 is connected to the X-shaped member 12 through a connecting rod, wherein one end of the connecting rod is fixedly connected to the telescopic rod 7, and the other end is movably connected to the center position of the X-shaped member.

[0061] Specifically, each X-shaped component 12 has four wheel-shaped sliders distributed at the end of the component. The four wheel-shaped sliders enable the X-shaped component 12 to move on the track of the flexible slide rail when the telescopic rod 7 extends or retracts. In addition, the center of the X-shaped component 12 can rotate, thereby better adapting to the deformation of the flexible guide rail 6 and achieving the purpose of accurate measurement.

[0062] In specific implementation, telescopic rods 7 are provided on both outer sides of the flexible slide rail 6. The telescopic rods 7 are electric telescopic rods, which adopt a threaded transmission structure. The electric telescopic rod includes a first threaded rod, a second threaded rod, and a motor. The motor is fixed on the preset bracket. The end of the first threaded rod is fixedly connected to the rotor of the motor. The threads of the first threaded rod and the second threaded rod are tightly engaged. The second threaded rod moves up and down by rotating the motor. One end of the second threaded rod is movably connected to the X-shaped component through a connecting rod.

[0063] In one or more embodiments, the measuring module includes a first retractable measuring rod and a second retractable measuring rod, which are located on both sides of the cutter clamping module. The first and second retractable measuring rods slide symmetrically along the centerline of the flexible slide rail as they slide along the flexible resistance track inside the flexible slide rail.

[0064] In one or more embodiments, such as Figures 3-4 As shown, the slider connected to the end of the retractable measuring rod is a sensor trolley. The sensor trolley includes a trolley body 10-1, a trolley sliding wheel assembly 10-2, and a built-in resistive displacement sensor (including a resistive sensor 10-4 and a wireless transceiver 10-5) and a power supply assembly 10-3. The power supply assembly 10-3 provides power to the trolley sliding wheel assembly 10-2 and the resistive displacement sensor.

[0065] Specifically, the flexible slide rail 6 has a flexible resistive track 11 for the sensor trolley to slide on its inner side. The sensor trolley can move on the flexible slide rail 6 and the flexible resistive track 11 via the trolley sliding wheel set 10-2, achieving path controllability. The flexible resistive tracks corresponding to the sliders of the first and second retractable measuring rods are independent of each other.

[0066] In a specific implementation, the first and second telescopic measuring rods are fixedly connected with respective sliders, where, for the convenience of description, the resistance displacement sensor in the fixed slider connected with the first telescopic measuring rod is referred to as a main resistance displacement sensor, and the resistance displacement sensor in the fixed slider connected with the second telescopic measuring rod is referred to as a secondary resistance displacement sensor; the main resistance displacement sensor is provided with a resistance sensor and an NRF24L01 wireless transceiver (main), the NRF24L01 wireless transceiver (main) is used for receiving signals of the telescopic rod (for obtaining a wear value) and the resistance sensor (for obtaining a resistance value and then obtaining a displacement value), and at the same time, the NRF24L01 wireless transceiver (secondary) provided with the secondary resistance displacement sensor is used for transmitting a resistance value signal, so that the secondary resistance displacement sensor moves to a corresponding distance, to realize symmetrical movement of the two displacement sensors.

[0067] In a specific implementation, the main resistance displacement sensor is manually adjusted in position by a field worker, and the secondary resistance displacement sensor is driven by a power supply set to drive a car sliding wheel set, so that the resistance values detected in the two cars are consistent, thereby ensuring that the main and secondary resistance displacement sensors are always symmetrical.

[0068] Further, the telescopic measuring rods are controlled by the host controller to collect data at a preset frequency (for example, 0.1 HZ) during data collection, the wear of the hob is obtained when the data measured by the first and second telescopic measuring rods at a certain time t are equal, and the data is further stored and finally transmitted to a display screen for display.

[0069] Further, the center of the curvature-adjusted flexible slide rail is consistent with the center of the outermost original profile of the hob to be measured.

[0070] Further, the wear measuring device further comprises a power supply module for power supply, and the host controller is further connected with an interactive module for control instruction issuing, control data inputting and result displaying.

[0071] As shown in Figure 2 The hob clamping module is located below the flexible slide rail and at the center line position of the flexible slide rail.

[0072] It should be noted that, in actual use, the device described in the embodiment needs to be fixedly installed with a hob monitoring gauge matched with the hob to be measured in the clamping module by a field worker. At the same time, the host controller controls the telescopic rod 7 to make the flexible slide rail 6 in a horizontal state, and controls the telescopic measuring rod 3 to extend or retract, so that the end thereof is flush with the zero scale position of the hob monitoring gauge 2, that is, the measurement result is zeroed.

[0073] For the convenience of use, as shown in Figure 7As shown, in one or more embodiments, the device is also provided with an interactive module 4 for control instruction issuing, control data inputting and result displaying, specifically, the interactive module includes diameter setting, slide rail homing, result storage and the like buttons as well as a display module for result display, such as Figure 7 As shown, specifically includes instruction issuing module 4-1, display module 4-2 and diameter setting module 4-3; wherein the purpose of the diameter setting is to input the diameter of the outermost original profile of the to-be-measured cutter into the main controller, and based on the input diameter, the main controller issues control instructions to control the telescopic rod 7 to make the center of the flexible slide rail 6 consistent with the center of the outermost original profile of the to-be-measured cutter;

[0074] The detection principle of the scheme described in this embodiment is:

[0075] As shown, Figure 2 The "variable diameter" in the scheme described in this embodiment is completed based on the up and down movement of the telescopic rod 7 to control the curvature of the flexible slide rail. When the slide rail is in the "homing" state, it is horizontal, at this time, the left and right telescopic measuring rods 3 can be leveled with the zero scale line of the clamped cutter detection gauge 2 using a level to finally complete the zeroing operation. Subsequently, the diameter of the to-be-measured cutter is input by the on-site staff so that the center of the flexible slide rail can adapt to the center of the to-be-measured cutter. When the center of the flexible slide rail coincides with the center of the cutter circle, it can be ensured that the telescopic measuring rod is perpendicular to the to-be-measured cutter at any position of the flexible slide rail. At this time, when the readings on both sides of the telescopic measuring rod are equal or close, it can be considered that the device is in the "optimal measurement position", and the average value of the measurement results collected on both sides is the cutter wear value. Using the "variable diameter" condition, the wear value measurement of any diameter cutter can be realized, and the measured wear value is more accurate, more convenient, more economical and more efficient compared with the built-in and external measurement technologies of cutter wear, which can meet the needs of on-site engineering.

[0076] The following will be described in combination with Figure 8 The detection principle is described as follows: wherein x is the distance from the clamped cutter detection zero scale line to the center position of the flexible slide rail; y is the distance from the center position of the flexible slide rail to the telescopic rods at both ends; and z is the descending height of the telescopic rods at both ends that needs to be adjusted under different cutter radii.

[0077] As shown, Figure 8 When the original profile radius of the cutter is r0, the profile radius of the flexible slide rail is r0+x, the distance y from the center cylinder to the telescopic rods at both ends is known, and then the descending height z of the telescopic rods at both ends that needs to be adjusted under different cutter radii can be obtained according to the formula .

[0078] Then, the hob wear values L1, L2 can be further read by the two side measuring rods, when L1, L2 are completely equal or extremely close, the flexible slide rail profile, the hob original profile and the worn profile have a common center, and the telescopic measuring rods on the flexible slide rail are perpendicular to the hob original profile and the worn profile everywhere. At this time, the average of L1, L2 can be taken as the current wear value of the hob, and the data record is saved and finally displayed on the display screen.

[0079] In summary, the technical problem solved by the utility model is to quickly, accurately, conveniently and universally measure the hob wear value. The utility model has high data reliability and universality, and can greatly improve the measurement efficiency of the hob wear. The primary purpose of the utility model is to reduce the burden of the field staff and improve the work efficiency of the hob checking; secondly, the data accuracy in the hob wear value monitoring can be improved, which is convenient for the field staff, the project related staff and the hob maintenance personnel to accurately master the hob wear condition. From the perspective of the utility model, the convenient handheld monitoring gauge can accurately monitor the hob wear value, which is convenient for the field staff to accurately master the hob wear value. Different from the built-in and external measurement technology, the device can ensure economic, convenient, fast and stable measurement of the hob wear value, can achieve the purpose of accurately monitoring the hob wear value, can eliminate the subjective factors and objective environmental factors, reduce the workload of the field staff when checking the hob, and further improve the work efficiency of the field staff when checking the hob in the cutter head.

[0080] Although the specific embodiments of the utility model are described in combination with the drawings, the description is not a limitation on the protection scope of the utility model, and those skilled in the art should understand that various modifications or deformations made by the skilled in the art on the basis of the disclosed technical solutions of the utility model without creative labor should be covered in the protection scope of the utility model.

Claims

1. A portable TBM hob wear measuring device with variable diameter, characterized in that, It includes a housing, a wear measurement module fixedly connected to the inner side of the housing, a hobbing cutter clamping module fixedly connected to the inner side of the housing, and a main controller; The measurement module includes a flexible slide rail, a telescopic rod for controlling the curvature of the flexible slide rail, and a retractable measuring rod that moves radially along the flexible slide rail; wherein, the flexible slide rail is connected to the inner side of the housing via a preset bracket; one end of the telescopic rod is fixedly connected to the preset bracket, and the other end is movably connected to the outer end of the flexible slide rail; one end of the retractable measuring rod is movably connected to the flexible slide rail via a slider; The hobbing cutter clamping module includes a clamping module and a hobbing cutter monitoring gauge that is detachably connected to the clamping module, wherein the clamping module is fixedly connected to the housing via a preset bracket; The main controller is electrically connected to both the telescopic rod and the telescopic measuring rod.

2. The variable diameter portable TBM hob wear measuring device as described in claim 1, characterized in that, The hobbing cutter clamping module is located below the flexible slide rail and at the center line of the flexible slide rail.

3. The variable diameter portable TBM hob wear measuring device as described in claim 1, characterized in that, One end of the telescopic rod is movably connected to the outer side of the end of the flexible slide rail via an X-shaped component. The X-shaped component includes an X-shaped body, and each end of the X-shaped body is provided with a wheel-shaped slider. The X-shaped body is movably connected to the guide rail provided on the outer side of the end of the flexible slide rail via the wheel-shaped slider.

4. The variable diameter portable TBM hob wear measuring device as described in claim 1, characterized in that, Telescopic rods are provided on both outer sides of the flexible slide rail, and the telescopic rods are electrically operated.

5. The variable diameter portable TBM hob wear measuring device as described in claim 4, characterized in that, The electric telescopic rod adopts a threaded transmission structure, wherein the electric telescopic rod includes a first threaded rod, a second threaded rod, and a motor. The motor is fixed on the preset bracket. The end of the first threaded rod is fixedly connected to the rotor of the motor. The threads of the first threaded rod and the second threaded rod are tightly engaged. The second threaded rod moves up and down by rotating the motor.

6. The variable diameter portable TBM hob wear measuring device as described in claim 1, characterized in that, The measurement module includes a first retractable measuring rod and a second retractable measuring rod, which are located on both sides of the cutter clamping module.

7. The variable diameter portable TBM hob wear measuring device as described in claim 6, characterized in that, When the first and second retractable measuring rods slide along the flexible resistance track inside the flexible slide rail, they are symmetrical about the center line of the flexible slide rail.

8. The variable diameter portable TBM hob wear measuring device as described in claim 1, characterized in that, The center of the flexible guide rail after curvature adjustment tends to coincide with the center of the original outermost contour of the hob under test.

9. The variable diameter portable TBM hob wear measuring device as described in claim 1, characterized in that, The wear measurement device also includes a power module for power supply.

10. The variable diameter portable TBM hob wear measuring device as described in claim 1, characterized in that, The main controller is also connected to an interactive module for issuing control commands, inputting control data, and displaying results.

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