Device for detecting and recycling abrasion fragments of shield tunneling machine cutter

Abstract

The utility model discloses a device for detecting and recycling abrasion fragments of a cutter of a shield tunneling machine. The device comprises a metal detection component and a containing shell, and an opening is formed in the upper end of the containing shell. A transverse slide way is laid at the upper end of the containing shell, and the metal detection component is placed on the slide way. A metal recovery area is vertically arranged at one end of the accommodating shell; the metal recovery area is vertical to the slideway; the metal detection component comprises a metal protection frame, the metal protection frame comprises a suspension frame and a mobile chassis, the mobile chassis is provided with rollers, the rollers are matched with the slideways, the mobile chassis is provided with a mobile motor, and the mobile motor drives the rollers; the bottom end of the suspension bracket is fixedly connected with the movable chassis, the suspension bracket is provided with a downward linear mover, and the end of a moving part of the linear mover is connected with an electric electromagnetic stirrer. According to the utility model, high-efficiency detection and recovery of shield tunneling machine cutter wear fragments are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of metal content detection, in particular to a device for detecting and recovering wear fragments of shield machine cutters. Background Art

[0002] The primary construction methods used for tunnel construction in underground rail transit projects are tunneling and shield tunneling. The shield tunneling method is the most widely used due to its advantages, including high speed, safe construction, high degree of mechanization, and good adaptability to the strata. As the core mechanical equipment for tunneling, the parameters and status of the shield machine significantly impact the successful completion of the tunnel. The compatibility between the shield machine and the stratum, as well as the equipment's condition during construction, are particularly important.

[0003] When tunneling in decomposed granite and gravel formations, shield machines are prone to tool wear and other issues due to the high proportion of coarse-grained soil and the high quartz content. Cutterhead wear can lead to a series of problems, including reduced efficiency, increased costs, compromised quality, increased equipment wear, increased safety hazards, and difficulty coping with complex geological conditions. Specifically, worn cutters reduce cutting capacity, resulting in slower tunneling speeds and requiring frequent downtime for maintenance and tool replacement, which in turn extends construction cycles and increases costs. This includes not only the direct costs of tool replacement and repair, but also indirect economic losses from construction delays. Tool wear leads to uneven cutting, potentially uneven excavation surfaces, and tunnel deviations, compromising the stability and design accuracy of the tunnel structure. Operating the equipment under high load increases mechanical stress, wear on components like the motor and hydraulic system, and increases failure rates, reducing equipment reliability and service life. Furthermore, frequent tool repairs and replacements increase operator workload and operational risks, increasing safety risks. Worn cutting tools are not very effective in dealing with complex geological conditions such as hard rock, sand and gravel, which increases the difficulty of excavation, affects the improvement of slag soil, and thus affects subsequent excavation work.

[0004] At present, when shield machines are excavating in strata such as weathered granite and gravel, the main method is to adjust the soil improvement method based on the feedback of shield machine parameters and the prediction of shield wear prediction model to improve the tool wear and get a rough estimate of the wear amount. However, there are some problems with the above solution. (1) The tool wear amount in the wear prediction model should be obtained through actual measurement. However, shield machines usually only shut down and open the cabin to measure the wear amount when the cutter is seriously worn. This means that the wear amount of the cutter cannot be obtained in real time and can only be estimated by inversion using empirical formulas. This estimation method is not accurate and cannot accurately reflect the actual wear of the cutter. (2) Excavation parameters can reflect the interaction between the cutter and the soil, such as propulsion force, torque and speed. Although excavation parameters can reflect the working status of the cutter, it is still impossible to quantitatively analyze the specific wear condition of the cutter. This makes it impossible to accurately determine the wear amount of the cutter through excavation parameters, affecting the accuracy and timeliness of wear management. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a device for detecting and recovering wear fragments of shield machine cutters, so as to better guide the slag improvement work and make more accurate wear predictions.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A device for detecting and recovering worn fragments of shield machine tools, comprising a metal detection component and a containing shell, the upper end of the containing shell being open; a transverse slide being laid on the upper end of the containing shell, and the metal detection component being placed on the slide; a metal recovery area being vertically provided at one end of the containing shell; the metal recovery area being perpendicular to the slide; the metal detection component comprising a metal protection frame, the metal protection frame comprising a suspension frame and a movable chassis, the movable chassis being provided with rollers, the rollers being coordinated with the slide, the movable chassis being provided with a movable motor, the movable motor driving the rollers; the bottom end of the suspension frame being fixedly connected to the movable chassis, the suspension frame being provided with a downwardly facing linear mover, the end of the moving part of the linear mover being connected to an electric electromagnetic stirrer.

[0008] Furthermore, the electric electromagnetic stirrer includes a U-shaped frame and an electric electromagnetic stirring shaft;

[0009] Specifically, the U-shaped frame includes a horizontal plate, a first fork wall, and a second fork wall;

[0010] Specifically, the electric electromagnetic stirring shaft includes a rotating motor, a rotating shaft, and an electromagnetic suction plate;

[0011] Specifically, the horizontal plate is connected to the moving part of the linear mover, the first fork wall is fixedly provided with a rotating motor, the output shaft of the rotating motor is fixedly connected to the rotating shaft, the blades are arranged in an array on the outer wall of the rotating shaft, the blades are connected to the electromagnetic suction plate, and the rotating shaft is rotatably connected to the second fork wall.

[0012] Furthermore, the suspension frame is in an inverted L-shape, and includes a vertical part and a horizontal part. The bottom end of the vertical part is fixedly connected to the movable chassis, the top end of the vertical part is fixedly connected to the horizontal part, and a downward linear mover is provided on the lower end surface of the horizontal part.

[0013] Furthermore, the rotating shaft is a hollow shaft, and a first conductive ring piece and a second conductive ring piece are provided at a portion where the rotating shaft overlaps with the second fork wall, and the wires of the electromagnetic suction plate are connected to the first conductive ring piece and the second conductive ring piece inside the rotating shaft;

[0014] Specifically, the outer surface of the second fork wall is provided with a first terminal and a second terminal, and the second fork wall is provided with a first wire channel and a second wire channel;

[0015] Specifically, a first spring slot is provided at the end of the first wire channel, a first wire is provided in the first wire channel, a first spring and a first contact cap are provided in the first spring slot, the first wire is connected to the first contact cap and the first terminal, and the first spring presses the first contact cap onto the first conductive ring piece;

[0016] Specifically, a second spring slot is provided at the end of the second wire channel, a second wire is provided in the second wire channel, a second spring and a second contact cap are provided in the second spring slot, the second wire is connected to the second contact cap and the second terminal, and the second spring presses the second contact cap onto the second conductive ring sheet.

[0017] Furthermore, the metal recovery area is provided with a transverse metal storage trough, and the transverse metal storage trough is unidirectionally passed through the accommodating shell in the transverse direction;

[0018] Specifically, a carrying plate is provided in the metal storage tank, and a mass measurement sensor is provided between the carrying plate and the bottom of the metal storage tank;

[0019] Specifically, a data recording dial is provided on the outer wall of the containing shell for recording the mass measurement sensor data.

[0020] Furthermore, it also includes a control dial, which is arranged on the side wall of the accommodating shell; the control dial includes a rotating motor switch, a moving motor switch, a main switch, and an electromagnetic suction switch.

[0021] Furthermore, the housing is a rectangular shell with an open top, a left slide and a right slide are respectively provided at the top of the two lateral side walls of the rectangular shell, and a metal recovery area is provided at the top of the front vertical side wall of the rectangular shell;

[0022] Specifically, two left rollers are provided on the left side of the mobile chassis, and two right rollers are provided on the right side of the mobile chassis. The left roller cooperates with the left slide, and the right roller cooperates with the right slide.

[0023] Furthermore, the slideway is a U-groove slideway, and the roller is embedded in the U-groove slideway;

[0024] Specifically, the bottom of the U-shaped groove slideway is a rough surface, the groove sidewall of the U-shaped groove slideway is a smooth surface, the outer wheel surface of the roller is a rough surface, and the end surface of the roller is a smooth surface.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This device achieves efficient detection and recovery of shield machine tool wear debris through the coordinated operation of a metal detection component, linear actuator, rotary motor, blades, and electromagnetic suction plates. Furthermore, precise sensors record data, ensuring the accuracy of the detection and recovery process and the reliability of the data. The entire control system is simple to operate, safe, and reliable, making the device highly practical and efficient in practical applications.

[0027] 2. This device has effective detection capabilities and a real-time data acquisition system, enabling precise and quantitative assessment of shield cutter wear at each ring and in the corresponding soil conditions. This provides accurate raw data for shield wear prediction models and the most realistic shield wear conditions for dynamic adjustments to soil improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a device for detecting and recovering wear debris from shield machine cutters according to the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the electric electromagnetic stirring shaft in the utility model;

[0030] Figure 3 It is a structural diagram of the control dial in the utility model;

[0031] Figure 4 It is a structural diagram of the electric electromagnetic stirrer in the utility model;

[0032] Figure 5 It is a structural schematic diagram of the metal recovery area in the utility model.

[0033] In the figure: a, metal detection component; b, metal recovery area; c, control panel; d, slag pool;

[0034] 1. Mobile motor; 2. Roller; 3. Slide; 4. Metal protection frame; 4.1. Suspension frame; 4.2. Mobile chassis; 5. Linear mover; 6. U-shaped frame; 6.1. Horizontal plate; 6.2. First fork wall; 6.3. Second fork wall; 7. Electric electromagnetic stirring shaft; 8. Rotating shaft; 8.1. First conductive ring piece; 8.2. Second conductive ring piece; 9. Rotating motor; 10. Electromagnetic suction plate; 11. Slag pool; 12. Containment shell; 13. Rotating motor switch; 14. Mobile motor switch; 15. Main switch; 16. Electromagnetic suction switch; 17. Horizontal metal storage slot; 18. Data recording dial; 19. First terminal; 20. Second terminal; 21. Movable baffle; 22. Mass measurement sensor; 23. Loading plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1:

[0036] See also Figures 1 to 5 The utility model provides a device for detecting and recovering wear debris of shield machine cutters, comprising a metal detection component a, a metal recovery area b, a control dial c, and a slag pool d.

[0037] The metal detection component a is used to detect the presence of metal fragments.

[0038] Among them, the metal recovery area b is used to collect and store the detected metal fragments.

[0039] Among them, the control dial c is used to control and operate various functions of the entire device.

[0040] Among them, the slag pool d is used to store waste slag and soil generated during the mixing process.

[0041] Furthermore, the slag storage pool d includes a containing shell 12, which is open at the upper end, closed on all sides, and closed at the lower end. A horizontal slide 3 is laid on the upper end of the containing shell 12, and the metal detection component a is placed on the slide 3. A metal recovery area b is vertically set at one end of the containing shell 12, and the metal recovery area b is perpendicular to the slide 3. A control dial c is fixedly set on the outer wall of the containing shell 12.

[0042] Specifically, the containing shell 12 is made of cement.

[0043] Furthermore, the metal detection component a includes a metal protection frame 4, which includes a suspension frame 4.1 and a movable chassis 4.2. The movable chassis 4.2 is provided with a roller 2, which cooperates with the slide 3. A movable motor 1 is provided on the movable chassis 4.2, and the movable motor 1 drives the roller 2; the suspension frame 4.1 is an inverted L-shape, and the suspension frame 4.1 includes a vertical part and a horizontal part. The bottom end of the vertical part is fixedly connected to the movable chassis 4.2, and the top end of the vertical part is fixedly connected to the horizontal part. The lower end surface of the horizontal part is provided with a downward linear mover 5, and the end of the moving part of the linear mover 5 is connected to the U-shaped frame 6 by bolts, and the U-shaped frame 6 is rotatably connected to the electric electromagnetic stirring shaft 7.

[0044] Specifically, the linear mover 5 can be a linear hydraulic cylinder or a linear motor push-pull rod, which belongs to the existing technology and can be purchased.

[0045] Among them, the U-shaped frame 6 includes a horizontal plate 6.1, a first fork wall 6.2, and a second fork wall 6.3. The electric electromagnetic stirring shaft 7 includes a rotating motor 9, a rotating shaft 8, and an electromagnetic suction plate 10. The horizontal plate 6.1 is fixedly connected to the moving part of the linear mover 5. The first fork wall is fixedly provided with a rotating motor 9. The output shaft of the rotating motor 9 is fixedly connected to the rotating shaft 8. The outer wall of the rotating shaft 8 is arrayed with blades, and the blades are connected to the electromagnetic suction plate 10. The rotating shaft 8 is rotatably connected to the second fork wall 6.3.

[0046] Specifically, the rotating motor 9 is a hollow shaft motor, and the rotating shaft 8 is inserted into the hollow shaft motor to reduce the assembly length with the rotating shaft 8, so that more electromagnetic suction plates 10 can be accommodated in the U-shaped frame 6. The hollow shaft motor itself belongs to the existing technology and can be purchased.

[0047] Specifically, the electromagnetic suction plate 10 is an electromagnet with a metal shell.

[0048] Specifically, the rotating shaft 8 is connected to the second fork wall 6.3 through a bearing, and the bearing and the external space of the second fork wall 6.3 are separated by an end cover and felt to prevent debris from entering the bearing and affecting the rotation.

[0049] Specifically, the rotating shaft 8 is a hollow shaft. The portion where the rotating shaft 8 overlaps with the second fork wall 6.3 is provided with a first conductive ring piece 8.1 and a second conductive ring piece 8.2. The wires of the electromagnetic suction plate 10 are connected to the first and second conductive ring pieces 8.1 and 8.2 within the rotating shaft 8. The outer surface of the second fork wall 6.3 is provided with a first terminal 19 and a second terminal 20. The second fork wall 6.3 is provided with a first wire channel and a second wire channel. A first spring slot is provided at the end of the first wire channel. A first wire 19.3 is provided in the first wire channel. A first spring 19 is provided in the first spring slot. 2. First contact cap 19.1. First wire 19.3 is connected to first contact cap 19.1 and first terminal 19. First spring 19.2 presses first contact cap 19.1 against first conductive ring 8.1. A second spring slot is provided at the end of the second wire channel. A second wire 20.3 is provided in the second wire channel. A second spring 20.2 and second contact cap 20.1 are provided in the second spring slot. Second wire 20.3 is connected to second contact cap 20.1 and second terminal 20. Second spring 20.2 presses second contact cap 20.1 against second conductive ring 8.1.

[0050] More specifically, the rotating shaft 8 can be manufactured in sections, the main shaft part of the blade is made of metal, the power transmission part can be made of an engineering plastic shaft embedded with a conductive ring piece, and the segmented shafts are connected by threads and locking pins; the wires of the electromagnetic suction plate 10 can be connected to the conductive ring piece separately first, and then the wires are passed through the blade to connect with the electromagnetic suction plate 10, and finally the electromagnetic suction plate 10 and the blade are connected by screws.

[0051] By controlling the rotating motor 9, the rotation state of the rotating shaft 8 can be controlled and the rotation speed can be adjusted. Each blade of the rotating shaft 8 is provided with a metal magnetic plate 10. By controlling the power supply, metal tool fragments encountered during the stirring process are attracted to the metal magnetic plate 10. In this way, the metal detection component a can dynamically detect various positions in the slag storage tank by moving the motor 1, linear mover 5, rotating motor 9, rotating shaft 8, and electromagnetic plate 10, and more accurately collect tool wear fragments in the slag storage tank.

[0052] Furthermore, the metal recovery area b is provided with a transverse metal storage trough 17, and the transverse metal storage trough 17 passes through the containing shell 12 in a unidirectional manner in the transverse direction. A carrying plate 23 is provided in the metal storage trough 17, and a mass measurement sensor 22 is provided between the carrying plate 23 and the bottom of the metal storage trough 17. The containing shell 12 is provided with a movable baffle 21 at the side opening of the transverse metal storage trough 17; the outer wall of the containing shell 12 is provided with a data recording dial 18 for recording the data of the mass measurement sensor 22.

[0053] Specifically, the movable baffle 21 is fixed by bolts.

[0054] After the metal detection component a completes the collection work, the rotating shaft 8 is moved to the top of the metal collection area b through the control of the moving motor 1, the linear mover 5, and the rotating motor 9. After the power of the electromagnetic suction plate 10 is turned off, the collected metal fragments will fall into the metal collection area b. A mass measurement sensor 22 is provided at the bottom of the metal collection area b. The mass of the tool metal fragments collected each time can be measured. After the data is measured, it will be automatically transmitted to the data recording dial 18. The number of rings to which the slag belongs each time, the amount of metal wear and other information can be obtained on the data recording dial 18. The supporting plate 23 can be cleaned by removing the movable baffle 21.

[0055] Furthermore, the control dial c is arranged on the side wall of the accommodating shell 12 for easy operation and maintenance; the control dial c includes a rotating motor switch 13, a moving motor switch 14, a main switch 15, and an electromagnetic suction switch 16.

[0056] The rotary motor switch 13 controls the start and stop of the rotary motor 9 and adjusts the rotation state and speed of the rotating shaft 8 .

[0057] The moving motor switch 14 controls the start and stop of the moving motor 1 and adjusts the movement of the metal detection component a on the slide 3 .

[0058] The electromagnetic suction switch 16 controls the power on and off of the electromagnetic suction plate 10 to manage the adsorption and release of metal fragments.

[0059] The main switch 15 is responsible for power management of the entire device to ensure safe operation of the equipment.

[0060] By operating various switches on the control system, the movement, stirring, storage and other operations of the metal detection component a can be controlled, which can ensure that the metal detection component a can more accurately detect various positions of the slag pool d. Example 2:

[0061] Based on Example 1, in this embodiment, the accommodating shell 12 is a rectangular shell with an open upper end, and a left slide 3.1 and a right slide 3.2 are respectively provided at the upper ends of the two lateral side walls of the rectangular shell, and a metal recovery area b is provided at the upper end of the front vertical side wall of the rectangular shell; two left rollers are provided on the left side of the mobile chassis 4.2, and two right rollers are provided on the right side of the mobile chassis 4.2, and the left roller cooperates with the left slide 3.1, and the right roller cooperates with the right slide 3.2.

[0062] Specifically, the slide 3 is a U-groove slide, and the roller 2 is embedded in the U-groove slide to ensure a stable fit; the bottom of the U-groove slide is a rough surface, the side wall of the U-groove slide is a smooth surface, the outer wheel surface of the roller 2 is a rough surface, and the end face of the roller 2 is a smooth surface, which prevents slipping and reduces travel resistance.

[0063] Specifically, two linear movers 5 are provided; the blades on the rotating shaft 8 are provided in 4 columns and 12 rows; and four mass measurement sensors 22 are provided, distributed at the four corners of the carrying plate 23 . Example 3:

[0064] Based on Example 1 or Example 2, this embodiment provides a method for using a device for detecting and recovering wear debris of shield machine cutters, comprising the following steps:

[0065] The slag to be tested is loaded into the slag pool d, and the metal detection component a is placed on the slide 3.

[0066] S1. Starting device:

[0067] First, turn on the main switch 1 to power on the entire device; then, start the mobile motor switch 14, and the mobile motor 1 starts to operate.

[0068] S2, horizontally moving metal detection component a:

[0069] Driven by the mobile motor 1, the metal detection component a moves horizontally along the slide 3 to scan the materials in the area;

[0070] Vertical adjustment of the position of the rotating shaft 8:

[0071] The position of the rotating shaft 8 can be adjusted vertically by the linear mover 5 connected to the metal protection frame 4 to ensure that the rotating shaft 8 reaches the predetermined detection and stirring position.

[0072] S3, stirring process:

[0073] When the rotating shaft 8 reaches the specified position, the switch of the rotating motor 9 is pressed to start the rotating motor 9, and the rotating motor 9 drives the rotating shaft 8 to rotate, so that the blades begin to stir the material.

[0074] Working of electromagnetic suction plate 10:

[0075] Pressing the electromagnetic suction switch 16 activates the electromagnetic suction plate 10 on each blade. During the stirring process, the electromagnetic suction plate 10 will absorb the tool wear debris detected during the stirring process.

[0076] Through the above steps, the metal detection component a can effectively detect and recover free metal fragments during the stirring process.

[0077] S4, metal recovery and measurement stage, after the metal detection work is completed, metal recovery and measurement must be carried out according to the following detailed steps:

[0078] Stop the motor:

[0079] Press the rotation motor switch to stop the operation of the rotation motor 9, and the shaft 8 stops rotating and remains in the current vertical position.

[0080] S5. Move the stirring blade to the metal storage area:

[0081] Start the mobile motor 1 and make it move horizontally along the slide 3. The mobile motor 1 drives the entire metal detection component a and the metal fragments to move toward the metal storage area 17. At the same time, the vertical position of the rotating shaft 8 is adjusted by the transmission piston 5 to ensure that the rotating shaft 8 is just above the horizontal metal storage groove 17.

[0082] S6. Release of adsorbed metal fragments:

[0083] Turn off the electromagnetic suction switch 16 and deactivate the electromagnetic suction plate 10 on each blade. The magnetic force on the electromagnetic suction plate 10 disappears, and the attracted metal fragments fall naturally and fall accurately into the metal storage 17.

[0084] S7. Measure and record data:

[0085] A mass measurement sensor 22 is installed at the bottom of the metal storage 17. The mass measurement sensor 22 detects the quantity and mass of the fallen metal fragments in real time. The mass measurement sensor 22 transmits this data to the data dial 18, which displays the following detailed information:

[0086] Number of rings corresponding to the slag: Displays the batch number or number of rings of the slag currently being processed for easy tracking and management;

[0087] Metal mass: Displays the total mass of detected metal fragments, providing data support for metal recovery;

[0088] Through these detailed steps, this device can not only effectively recycle metal fragments, but also accurately record and display key data in each link, ensuring the precision of operation and the accuracy of data.

[0089] All components not discussed in detail in this application and the connection methods of the components in this application are well-known technologies in the technical field and can be directly applied without further explanation.

[0090] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0091] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" 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, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0092] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for detecting and recovering wear debris of shield machine cutters, comprising a metal detection component and a containment shell, characterized in that: The upper end of the accommodating shell is open; A transverse slide is laid on the upper end of the containment shell, and the metal detection component is placed on the slide; a metal recovery area is vertically set at one end of the containment shell; the metal recovery area is perpendicular to the slide; The metal detection component includes a metal protection frame, the metal protection frame includes a suspension frame and a mobile chassis, the mobile chassis is provided with rollers, the rollers cooperate with the slideway, and the mobile chassis is provided with a mobile motor, the mobile motor drives the rollers; The bottom end of the suspension frame is fixedly connected to the movable chassis. The suspension frame is provided with a downward linear mover. The end of the moving part of the linear mover is connected to the electric electromagnetic stirrer.

2. The device for detecting and recovering wear debris of shield machine cutters according to claim 1, characterized in that: The electric electromagnetic stirrer comprises a U-shaped frame and an electric electromagnetic stirring shaft; The U-shaped frame includes a horizontal plate, a first fork wall, and a second fork wall; The electric electromagnetic stirring shaft includes a rotating motor, a rotating shaft, and an electromagnetic suction plate; The horizontal plate is connected to the moving part of the linear mover, the first fork wall is fixedly provided with a rotating motor, the output shaft of the rotating motor is fixedly connected to the rotating shaft, the outer wall of the rotating shaft is arrayed with blades, the blades are connected to the electromagnetic suction plate, and the rotating shaft is rotatably connected to the second fork wall.

3. The device for detecting and recovering wear debris of shield machine cutters according to claim 1, characterized in that: The suspension frame is in an inverted L shape and includes a vertical portion and a horizontal portion. The bottom end of the vertical portion is fixedly connected to the movable chassis, the top end of the vertical portion is fixedly connected to the horizontal portion, and a downward linear mover is provided on the lower end surface of the horizontal portion.

4. The device for detecting and recovering wear debris of shield machine cutters according to claim 2, characterized in that: The rotating shaft is a hollow shaft, and the portion where the rotating shaft overlaps with the second fork wall is provided with a first conductive ring piece and a second conductive ring piece, and the wire of the electromagnetic suction plate is connected to the first conductive ring piece and the second conductive ring piece inside the rotating shaft; The outer surface of the second fork wall is provided with a first terminal and a second terminal, and the second fork wall is provided with a first wire channel and a second wire channel; A first spring slot is provided at the end of the first wire channel, a first wire is provided in the first wire channel, a first spring and a first contact cap are provided in the first spring slot, the first wire is connected to the first contact cap and the first terminal, and the first spring presses the first contact cap onto the first conductive ring piece; A second spring slot is provided at the end of the second wire channel, a second wire is provided in the second wire channel, a second spring and a second contact cap are provided in the second spring slot, the second wire is connected to the second contact cap and the second terminal, and the second spring presses the second contact cap onto the second conductive ring sheet.

5. The device for detecting and recovering wear debris of shield machine cutters according to claim 2, characterized in that: The metal recovery area is provided with a transverse metal storage trough, and the transverse metal storage trough is unidirectionally passed through the accommodating shell in the transverse direction; A load-bearing plate is provided in the metal storage tank, and a mass measurement sensor is provided between the load-bearing plate and the bottom of the metal storage tank; The outer wall of the containing shell is provided with a data recording dial for recording the mass measurement sensor data.

6. The device for detecting and recovering wear debris of shield machine cutters according to claim 5, characterized in that: It also includes a control dial, which is arranged on the side wall of the accommodating shell; the control dial includes a rotating motor switch, a moving motor switch, a main switch, and an electromagnetic suction switch.

7. The device for detecting and recovering wear debris of shield machine cutters according to claim 1, characterized in that: The housing is a rectangular shell with an open top, a left slide and a right slide are respectively provided at the upper ends of the two lateral side walls of the rectangular shell, and a metal recovery area is provided at the upper end of the front vertical side wall of the rectangular shell; Two left rollers are arranged on the left side of the mobile chassis, and two right rollers are arranged on the right side of the mobile chassis. The left roller cooperates with the left slide, and the right roller cooperates with the right slide.

8. The device for detecting and recovering wear debris of shield machine cutters according to claim 1, characterized in that: The slideway is a U-groove slideway, and the roller is embedded in the U-groove slideway; The bottom of the U-shaped groove slideway is a rough surface, the groove sidewall of the U-shaped groove slideway is a smooth surface, the outer wheel surface of the roller is a rough surface, and the end surface of the roller is a smooth surface.

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