An efficient cutter wear detection device for shield machines

Abstract

The present invention discloses an efficient cutter wear detection device for a shield machine, which comprises a bracket and a support plate. A support plate is arranged on one side of the two opposite brackets. A horizontal movement device is arranged on the top surface of the support plate, and a moving rack is arranged on one side. A swinging device is arranged on the horizontal movement device, and a detection probe is arranged on the swinging device. The lower surface of the support plate is connected with a vertical movement device. A clamping rack is installed on the bracket near the vertical movement device, and the clamping rack and the moving rack are in the same vertical plane. A hydraulic rod is arranged on the bracket at the end far from the clamping rack, and the output end of the hydraulic rod is connected with the lower surface of the support plate; After adopting the above structure, through the design of driving the detection device to move vertically by a ball screw, the problem that the existing device can only move horizontally for detection and cannot detect cutters at different positions in multiple directions is solved.

Description

Technical Field

[0001] The invention relates to the technical field of shield machine cutter wear detection, and in particular to an efficient shield machine cutter wear detection device. Background Art

[0002] The cutterhead of the shield machine is equipped with cutters, which are the core components of the shield machine to achieve rock breaking and excavation. Due to the complex and harsh construction environment and long-term operation under low speed, heavy load and dynamic changing working conditions, excessive wear and abnormal damage of the cutters have become the main reasons for the failure and shutdown of the shield machine, and are also one of the main difficulties in safe and efficient shield excavation.

[0003] The existing shield machine cutter head detection device has the advantage of being able to move horizontally for detection, which solves the problem that the original tool wear detection device cannot be moved and is inconvenient to detect. However, after the device is installed and fixed, it can only be moved horizontally for detection, and cannot be moved in multiple directions to detect tools in different positions. Due to geological and other reasons during the shield construction process, the wear of the cutter is inconsistent. After the cutter whose wear reaches the control value is replaced with a new cutter, the excavation plane of the cutter is prone to mismatch with the rock surface, causing the newly replaced cutter to be subjected to greater force, wear faster, and the tool life is short.

[0004] Therefore, improvements are made to the above problems. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide an efficient shield machine tool wear detection device. The design of driving the detection device to move vertically by a ball screw solves the problems that the existing device can only move horizontally for detection, cannot detect tools at different positions in multiple directions, and the excavation plane of the roller cutter does not fit the rock surface, resulting in a new roller cutter being subjected to greater force, a faster wear rate, and a short tool life.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] The invention discloses an efficient shield machine tool wear detection device, comprising a bracket and a support plate, wherein two brackets are provided, and a slide groove one is symmetrically opened on opposite sides of the two brackets, and a support plate is slidably arranged in the slide groove one, a horizontal moving device is provided on the top surface of the support plate, and a moving rack is provided on one side, a swinging device is provided on the horizontal moving device, and a detection probe is provided on the swinging device, a vertical moving device is connected to the lower surface of the support plate, a clamping rack is installed on the bracket close to the side of the vertical moving device, the clamping rack and the moving rack are in the same vertical plane, a hydraulic rod is provided on the bracket away from one end of the clamping rack, and the output end of the hydraulic rod is connected to the lower surface of the support plate, wherein the horizontal moving device, the swinging device and the vertical moving device cooperate with each other to adjust the position of the detection probe.

[0008] As a further solution of the present invention: a horizontal slideway one is opened on the top surface of the support plate, a horizontal moving device is slidably arranged in the horizontal slideway one, a horizontal slideway two is opened at one end of the support plate, a slider is arranged in the horizontal slideway two, a magnet block is arranged at one end of the support plate close to the slider, a clamping block is connected to the top of the slider, and the clamping block can be horizontally clamped on the clamping rack.

[0009] As a further solution of the present invention: the slider is a magnetic plate, the slider corresponds to the magnet block, and is subject to a repulsive force.

[0010] As a further solution of the present invention: the horizontal moving device includes a slide plate, the slide plate is slidably arranged in the horizontal slideway one of the support plate, a motor is installed on the slide plate, the output end of the motor is connected with a gear, the gear meshes with a moving rack located below it, and a columnar protrusion is connected to one end of the slide plate.

[0011] As a further solution of the present invention: the swinging device includes a bidirectional motor and a one-way bearing, the bidirectional motor is fixed on the top of the slide plate, one-way bearings are connected to the output shafts at the upper and lower ends of the bidirectional motor, a ball screw is connected to the upper one-way bearing, a moving block is nested on the ball screw, a clamping block is sleeved outside the moving block, a cylindrical block is connected to the lower one-way bearing, a rotating column is rotatably arranged on the cylindrical block, a counterweight is arranged at one end of the rotating column, a detection probe is arranged at the other end, and an adjusting mechanism is arranged outside the bidirectional motor, one end of the adjusting mechanism is connected with a rope, and the other end of the rope is connected with the counterweight.

[0012] As a further solution of the present invention: the adjusting mechanism includes a vertical positioning block, the vertical positioning block is sleeved on the outer surface of the bidirectional motor, a slideway is opened inside the vertical positioning block, a rotating block is arranged in the slideway, a fixing rod is connected to one end of the vertical positioning block, and the other end of the fixing rod is fixedly connected with the clamping block.

[0013] As a further solution of the present invention: the vertical moving device includes a slideway plate, the slideway plate is vertically arranged on the lower surface of the support plate, a connecting plate is slidably arranged on the slideway plate, one end of the connecting plate is connected with a cylindrical support block, the other end is connected with a swinging rack, a positioning block is arranged on the cylindrical support block, and an elastic telescopic rod is arranged at one end of the slideway plate, and the output end of the elastic telescopic rod is connected with the connecting plate.

[0014] As a further solution of the present invention: the side end of the swinging rack is attached to the side end of the moving rack.

[0015] The beneficial effects of the present invention:

[0016] In the present invention, the motor-driven gear moves on the moving rack and can be disengaged from the oscillating rack to engage with the engaging rack. This setting enables the motor-driven gear to move on the moving rack to adjust the horizontal position of the detection probe. When the gear engages with the engaging rack, under the limitation of the rotating cylinder, the gear moves up and down on the engaging rack to control the overall height of the detection probe. By changing the type of the engaging rack engaged by the gear, the direction of the position change of the detection probe can be changed, and the position change of the detection probe can be driven by only one motor.

[0017] In the present invention, the one-way bearing enables the output shaft of the bidirectional motor to rotate in different directions to respectively control the rotation of the ball screw and the rotating cylinder. The upper driving shaft of the bidirectional motor rotates to drive the moving block to move up and down, which can control the up and down swing of the rotating cylinder to adjust the height and orientation of the detection probe. By adjusting the orientation of the detection probe, the arc surface of the cutting tool and the rock surface can be observed better to obtain accurate data. The lower driving shaft of the bidirectional motor rotates to change the orientation of the detection probe so that it can observe different substances. The two adjustment operations are realized on one bidirectional motor, and the operation is simple.

[0018] In the present invention, the detection probe can be switched to turn between the rock surface and the cutting tool under the drive of the bidirectional motor. By observing the cutting degree of the rock surface, the tool interval to be observed can be quickly found. Then, the detection probe turns to be able to observe the cutting tool and quickly find the tool to be replaced. Compared with directly observing the cutting tool, a large amount of time is saved. At the same time, deciding the replacement of the tool in combination with the specific situation of the rock surface can avoid the situation that the excavation plane of the hob does not fit the rock surface easily after the hob is replaced with a new one, resulting in a large force on the newly replaced hob, a fast wear rate, and a short service life of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic structural diagram of the whole of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the present invention in the state where the detection probe detects the cutting tool;

[0022] Figure 3 It is a schematic structural diagram of the present invention in the state where the engaging block is in the engaged state;

[0023] Figure 4 It is a schematic structural diagram of the horizontal moving device and the swinging device of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the vertical moving device of the present invention;

[0025] Figure 6 It is a schematic diagram of the present invention in the state where the limit on the engaging rack is releasedFigure 1 ;

[0026] Figure 7 Structural schematic diagram of the present invention when the limit on the engaging rack is released Figure 2 ;

[0027] Figure 8 Structural schematic diagram of the present invention when the limit on the engaging rack is released Figure 3 ;

[0028] Figure 9 Structural schematic diagram of the detection probe in the reverse state of the present invention.

[0029] In the figure: 1, support; 2, support plate; 21, magnet block; 22, engaging block; 23, slider; 24, first horizontal slideway; 25, second horizontal slideway; 3, moving rack; 4, horizontal moving device; 41, slide plate; 42, motor; 43, gear; 44, columnar protrusion; 5, swinging device; 51, bidirectional motor; 52, one-way bearing; 53, moving block; 54, ball screw; 55, clamping block; 56, rope; 57, rotating cylinder; 58, cylindrical block; 59, counterweight; 100, rotating block; 300, vertical positioning block; 400, positioning rod; 500, fixing rod; 6, vertical moving device; 61, slideway plate; 62, connecting plate; 63, positioning block; 64, elastic telescopic rod; 65, cylindrical support block; 66, swinging rack; 7, engaging rack; 8, detection probe; 9, hydraulic rod; 200, cutter head; 600, cutter. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figures 1 - 9 shown, it is an efficient cutter wear detection device for a shield machine. The detection device includes a support 1, a support plate 2, a moving rack 3, a horizontal moving device 4, a swinging device 5, a vertical moving device 6, an engaging rack 7, a detection probe 8, and a hydraulic rod 9;

[0032] Among them, there are two supports 1. On the opposite sides of the two supports 1, first chutes are symmetrically opened. The support plate 2 is horizontally arranged in the first chutes of the two supports 1. The two ends of the support plate 2 are in a T-shaped structure, and the support plate 2 can move vertically up and down in the T-shaped first chute of the support 1; and the moving rack 3 is horizontally arranged beside the support plate 2 through a connecting block, and the two are parallel to each other;

[0033] On the top surface of the further support plate 2, a first horizontal slideway 24 is provided, and the above-mentioned horizontal moving device 4 is arranged in the first horizontal slideway 24 of the support plate 2. The horizontal moving device 4 can move horizontally in the first horizontal slideway 24 of the support plate 2; and the swinging device 5 is fixedly arranged on the horizontal moving device 4 through a connecting block and is located above the horizontal moving device 4; the above-mentioned vertical moving device 6 is arranged on the lower surface of the support plate 2 through a connecting block. The vertical moving device 6 is located below the support plate 2 and is closely arranged against the support 1;

[0034] Furthermore, the engaging rack 7 is vertically arranged on the bottom plate of the support 1 beside the vertical moving device 6. The engaging rack 7 and the moving rack 3 are in the same vertical plane and are located beside the moving rack 3; a double-sided tooth angle is arranged on the engaging rack 7; the detection probe 8 is arranged on the swinging device 5. In the specific implementation process, the wear of multiple groups of cutters 600 on the cutter head 200 of the shield machine and the excavated rock surface is detected by the detection probe 8, and the detection result is displayed through an externally connected display;

[0035] The above-mentioned hydraulic rod 9 is arranged on the support 1 at the end far from the engaging rack 7. The output end of the hydraulic rod 9 is connected to the lower surface of the support plate 2. In the specific implementation, the hydraulic rod 9 can assist in adjusting the height of the support plate 2 and can also limit the height of the support plate 2;

[0036] Further, as Figure 3 shown, the above-mentioned support plate 2 is provided with a magnet block 21, an engaging block 22, a slider 23, a first horizontal slideway 24 and a second horizontal slideway 25; a first horizontal slideway 24 is provided on the top surface of the support plate 2, and the support plate 2 is provided with a second horizontal slideway 25 at one end close to the engaging rack 7. A slider 23 is arranged at one end inside the second horizontal slideway 25, and a magnet block 21 is arranged on one side of the upper surface of the support plate 2. The magnet block 21 and the slider 23 are on the same side. The slider 23 can move horizontally in the second horizontal slideway 25. Further, the engaging block 22 is arranged on the top of the slider 23. The engaging block 22 is located between the engaging rack 7 and the support 1. The engaging block 22 can be horizontally engaged on the engaging rack 7; at the same time, the slider 23 is a magnetic plate. In the specific implementation, the slider 23 is always subjected to the repulsive force of the magnet block 21;

[0037] Further, as Figure 4As shown, the horizontal moving device 4 includes a sliding plate 41, a motor 42, a gear 43, and a columnar protrusion 44. The sliding plate 41 is slidably disposed in the first horizontal slideway 24 of the support plate 2, and the sliding plate 41 can horizontally move within the first horizontal slideway 24 of the support plate 2. The motor 42 is horizontally disposed on the sliding plate 41, and the output end of the motor 42 is connected to the gear 43. The gear 43 meshes with the moving rack 3 located below it. At the same time, the columnar protrusion 44 is disposed on the sliding plate 41, facing the engaging block 22, and the two are on the same straight line. When the columnar protrusion 44 moves towards the engaging block 22, it can contact the engaging block 22 and drive it to move together.

[0038] At the same time, as Figure 4 shown, the above-mentioned swinging device 5 includes: a bidirectional motor 51, a one-way bearing 52, a moving block 53, a ball screw 54, a clamping block 55, a rope 56, a rotating cylinder 57, a cylindrical block 58, a counterweight 59, a rotating block 100, a vertical positioning block 300, a positioning rod 400, and a fixing rod 500. As Figure 4 shown, the sliding plate 41 is semi-I-shaped, and the bidirectional motor 51 is vertically disposed on the top of the sliding plate 41 through a connecting block, and the bidirectional motor 51 is located inside the sliding plate 41.

[0039] Furthermore, two one-way bearings 52 are provided, and are on the output shafts at the upper and lower ends of the bidirectional motor 51. A gear ring engaging structure is provided at the connection between the one-way bearing 52 and the two output shafts of the bidirectional motor 51. Under the action of this gear ring engaging structure, only when the two output shafts of the bidirectional motor 51 rotate in a specified direction can they be engaged with the one-way bearing 52, and thus the driving effect of the bidirectional motor 51 can be transmitted to the ball screw 54 and the cylindrical block 58 connected to the one-way bearing 52.

[0040] When the rotation directions of the two output shafts of the bidirectional motor 51 are opposite to the specified direction, the gear ring engaging structure will disengage, so that the driving force of the bidirectional motor 51 cannot be transmitted to the ball screw 54 and the cylindrical block 58. Therefore, through the one-way bearing 52, the ball screw 54 and the cylindrical block 58 can rotate respectively corresponding to different rotation directions of the bidirectional motor 51, which makes the rotations of the ball screw 54 and the cylindrical block 58 not affect each other.

[0041] Furthermore, the moving block 53 is nested on the ball screw 54. The moving block 53 meshes with the ball screw 54. The clamping block 55 is fixedly disposed on the outer surface of the moving block 53 and is fixedly disposed on the bidirectional motor 51 through the positioning rod 400. The ball screw 54 is vertically disposed on the upper surface of the one-way bearing 52. One end of the rope 56 is connected to the counterweight 59, and the other end is fixedly connected to the rotating block 100. The rotating block 100 is disposed in the circumferential slideway of the vertical positioning block 300, and the rotating block 100 can rotate in the circumferential slideway of the vertical positioning block 300.

[0042] The further vertical positioning block 300 is nested on the outer surface of the bidirectional motor 51. The vertical positioning block 300 can vertically move up and down on the outer surface of the bidirectional motor 51. The further rotating cylinder 57 is rotatably arranged on the cylindrical block 58. The rotating cylinder 57 can swing up and down in the vertical plane around the cylindrical block 58;

[0043] And the cylindrical block 58 is arranged on the lower output shaft of the bidirectional motor 51; the counterweight block 59 is arranged at one end of the rotating cylinder 57 away from the detection probe 8. The counterweight block 59 is relatively heavier than the detection probe 8, so that the detection probe 8 is always subjected to the upward driving force of the counterweight block 59 on it;

[0044] The number of the above-mentioned positioning rods 400 is two, and the bottoms are oppositely arranged on the bidirectional motor 51. The upper parts of the positioning rods 400 penetrate through the clamping block 55; the clamping block 55 is nested outside the positioning rods 400 and can vertically move up and down relative to the positioning rods 400. During this movement process, the positioning rods 400 mainly play a role in limiting the clamping block 55 to prevent it from rotating;

[0045] Further as Figure 4 shown, one end of the fixed rod 500 is connected to the vertical positioning block 300, and the other end is fixedly connected to the clamping block 55;

[0046] Even further as Figure 5 shown, the above-mentioned vertical moving device 6 includes: a slideway plate 61, a connecting plate 62, a positioning block 63, an elastic telescopic rod 64, a cylindrical support block 65, a swinging rack 66;

[0047] Among them, the slideway plate 61 is vertically arranged on the lower surface of the support plate 2. The slideway plate 61 is located beside the engaging rack 7; and the connecting plate 62 is arranged in the slideway of the slideway plate 61. The connecting plate 62 can vertically move up and down in the slideway of the slideway plate 61; one end of the connecting plate 62 is connected with a cylindrical support block 65, and the other end is connected with a swinging rack 66. Further, the positioning block 63 is vertically arranged on the cylindrical support block 65. The positioning block 63 is made of rubber and is provided with a card slot meshing with the rotating cylinder 57; in the specific implementation process, after the rotating cylinder 57 moves down to squeeze the positioning block 63 and engage it in the card slot of the positioning block 63, the positioning block 63 can be in full contact with the rotating cylinder 57 to prevent the rotating cylinder 57 from shifting;

[0048] Further, the elastic telescopic rod 64 is vertically arranged on the bottom plate at the lower end of the slideway plate 61. The output end of the elastic telescopic rod 64 is connected with the connecting plate 62 above it; the connecting plate 62 is always subjected to the driving force of the elastic telescopic rod 64 towards the positioning block 63. The tooth angle of the swinging rack 66 is the same as that of the moving rack 3 and is arranged on the other end of the connecting plate 62. The side end of the swinging rack 66 can be attached to the side end of the moving rack 3. When the swinging rack 66 is at the uppermost position, it can be on the same straight line as the moving rack 3.

[0049] Working principle of the present invention:

[0050] In the specific implementation process, the motor 42 drives the gear 43 to move on the moving rack 3 to adjust the horizontal position of the detection probe 8 indirectly connected to the sliding plate 41; when it is necessary to change the vertical position of the detection probe 8, if it is a local adjustment, the upper output shaft of the bidirectional motor 51 drives the ball screw 54 to rotate through the one-way bearing 52 to drive the moving block 53 to move up and down, and the moving block 53 moves to drive the vertical positioning block 300 to move up and down through the fixed rod 500;

[0051] The vertical positioning block 300 drives the rotating block 100 to move up and down, and the rotating block 100 drives the counterweight block 59 to move up and down through the rope 56, thereby controlling the up and down swing of the rotating cylinder 57 to adjust the height and orientation of the detection probe 8; by adjusting the orientation of the detection probe 8, the arc surface of the tool can be better observed to obtain accurate data;

[0052] If it is a large-range adjustment, the motor 42 drives the gear 43 to move on the moving rack 3 first, and then continues to move on the swinging rack 66 until it meshes with the engaging rack 7. At this time, the columnar protrusion 44 collides and presses the engaging block 22 to move it in the direction of the magnet block 21 to disengage from the engagement with the engaging rack 7 as shown in Figure 6 and Figure 7 ;

[0053] The upper output shaft of the bidirectional motor 51 rotates to drive the moving block 53 to move up on the positioning rod 400, and one end of the rotating cylinder 57 where the detection probe 8 is located moves down accordingly and presses down on the cylindrical support block 65 below it. At the same time, the rotating cylinder 57 will just be engaged in the card slot of the positioning block 63 as shown in Figure 7 ;

[0054] The cylindrical support block 65 moves down to drive the connecting plate 62 to move down, and the connecting plate 62 moves down to drive the swinging rack 66 to disengage from the engagement with the gear 43 as shown in Figure 8 ;

[0055] After that, the motor 42 drives the gear 43 to move up and down on the engaging rack 7 to control the overall height position of the detection probe 8. During the movement of the gear 43, the rotating cylinder 57 is engaged by the positioning block 63 to prevent the gear 43 from falling off the engaging rack 7;

[0056] During the process of the gear 43 driving one end of the support plate 2 to move up and down on the engaging rack 7, the hydraulic rod 9 also drives the other end of the support plate 2 and the components connected thereto to move vertically up and down below the support plate 2; the gear 43 and the hydraulic rod 9 act together at both ends of the support plate 2 to enable the process of the two ends of the support plate 2 being stressed and moving up and down to proceed stably;

[0057] After the height adjustment of the detection probe 8 is completed, the rotating cylinder 57 moves upward driven by the moving block 53. Affected by the magnet block 21, the engaging block 22 is re-engaged with the engaging rack 7. The engaging block 22 pushes the sliding plate 41 backward to disengage the gear 43 from the engagement with the engaging rack 7. Then, the oscillating rack 66 moves upward to engage with the gear 43. The height of the detection probe 8 is maintained more stably by the cooperation of the engagement of the engaging block 22 with the engaging rack 7 and the height limit of the support plate 2 by the hydraulic rod 9.

[0058] When it is necessary to observe the rock surface, only the driving shaft at the lower end of the bidirectional motor 51 needs to rotate to drive the rotating cylinder 57 to rotate, so that the detection probe 8 turns from the side of the tool to the side of the rock surface as Figure 9 , and the rock surface can be observed. During the observation process, the up-and-down swing angle of the rotating cylinder 57 can also be adjusted to adapt to the cutting angle of the rock surface to achieve a better observation effect.

[0059] The detection probe 8 can be switched between the rock surface and the tool under the drive of the bidirectional motor 51. By observing the cutting degree of the rock surface, the tool interval to be observed can be quickly found. Then, when the detection probe 8 turns, the tool can be observed to quickly find the tool that needs to be replaced, which saves a lot of time compared with directly observing the tool.

[0060] A detailed description of an embodiment of the present invention has been given above, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An efficient cutter wear detection device for a shield machine, comprising a bracket (1) and a support plate (2). There are two brackets (1), and on one side of the two brackets (1) facing each other, a first sliding groove is symmetrically provided. The support plate (2) is slidably arranged in the first sliding groove. It is characterized in that, The top surface of the support plate (2) is provided with a horizontal moving device (4), one side is provided with a moving rack (3), the horizontal moving device (4) is provided with a swinging device (5), and a detection probe (8) is provided on the swinging device (5). The lower surface of the support plate (2) is connected with a vertical moving device (6). A clamping rack (7) is installed on the bracket (1) near one side of the vertical moving device (6). The clamping rack (7) and the moving rack (3) are in the same vertical plane. A hydraulic rod (9) is provided on the bracket (1) at the end far from the clamping rack (7). The output end of the hydraulic rod (9) is connected to the lower surface of the support plate (2). Among them, the horizontal moving device (4), the swinging device (5) and the vertical moving device (6) cooperate with each other to adjust the position of the detection probe (8). The horizontal moving device (4) includes a sliding plate (41). The sliding plate (41) is slidably arranged in the first horizontal slideway (24) of the support plate (2). A motor (42) is installed on the sliding plate (41). The output end of the motor (42) is connected with a gear (43). The gear (43) meshes with the moving rack (3) located below it. One end of the sliding plate (41) is connected with a columnar protrusion (44). The swinging device (5) includes a bidirectional motor (51) and a one-way bearing (52). The bidirectional motor (51) is fixed on the top of the sliding plate (41). One-way bearings (52) are connected to the output shafts at the upper and lower ends of the bidirectional motor (51). A ball screw (54) is connected to the upper one-way bearing (52). A moving block (53) is nested on the ball screw (54). A clamping block (55) is sleeved outside the moving block (53). A cylindrical block (58) is connected to the lower one-way bearing (52). A rotating cylinder (57) is rotatably arranged on the cylindrical block (58). A counterweight block (59) is arranged at one end of the rotating cylinder (57), and a detection probe (8) is arranged at the other end. And an adjusting mechanism is arranged outside the bidirectional motor (51). One end of the adjusting mechanism is connected with a rope (56), and the other end of the rope (56) is connected with the counterweight block (59). The adjusting mechanism includes a vertical positioning block (300). The vertical positioning block (300) is sleeved on the outer surface of the bidirectional motor (51). A slideway is opened inside the vertical positioning block (300). A rotating block (100) is arranged in the slideway. One end of the vertical positioning block (300) is connected with a fixed rod (500). The other end of the fixed rod (500) is fixedly connected with the clamping block (55).

2. The high-efficiency cutter wear detection device for shield machines according to claim 1, characterized in that, The top surface of the support plate (2) is provided with a first horizontal slideway (24). The horizontal moving device (4) is slidably arranged in the first horizontal slideway (24). One end of the support plate (2) is provided with a second horizontal slideway (25). A slider (23) is arranged in the second horizontal slideway (25). A magnet block (21) is arranged at one end of the support plate (2) close to the slider (23). A clamping block (22) is connected to the top of the slider (23). The clamping block (22) can be horizontally clamped on the clamping rack (7).

3. The efficient cutter wear detection device for shield machine according to claim 2, characterized in that, The slider (23) is a magnetic plate. The slider (23) corresponds to the magnet block (21) and is subjected to a repulsive force.

4. An efficient shield machine tool wear detection device according to claim 1, characterized in that The vertical moving device (6) includes a slide plate (61), the slide plate (61) is vertically arranged on the lower surface of the support plate (2), a connecting plate (62) is slidably arranged on the slide plate (61), one end of the connecting plate (62) is connected with a cylindrical support block (65), the other end is connected with a swinging rack (66), a positioning block (63) is arranged on the cylindrical support block (65), one end of the slide plate (61) is provided with an elastic telescopic rod (64), and the output end of the elastic telescopic rod (64) is connected with the connecting plate (62).

5. An efficient cutter wear detection device for a shield machine according to claim 4, characterized in that, The side end of the swinging rack (66) is in contact with the side end of the moving rack (3).

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