Auxiliary device for detecting TBM (Tunnel Boring Machine) cutterhead hob

Abstract

The invention relates to the technical field of tunneling equipment, and discloses a TBM cutterhead hob detection auxiliary device which comprises a base and a rotating disc rotating on the base, a positioning groove matched with the outer edge of a hob ring is formed in the outer arc face of the rotating disc, and a fastening assembly used for clamping the edge of a hob is arranged in the positioning groove. A rotating shaft is arranged in the rotating disc, a clamping tongue is fixedly connected to the surface of the rotating shaft, an adjusting groove matched with the clamping tongue is formed in the rotating disc, a concave block is arranged through the adjusting groove, a groove matched with the clamping tongue is formed in the surface of the concave block, and the concave block is connected with the rotating disc through a spring C; the driving assembly is used for driving the rotating shaft to drive the rotating disc to rotate. The device has the effect of stably, continuously and accurately detecting the hob jamming problem, and the defects in the prior art are overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of tunneling equipment, and more particularly to a TBM cutterhead cutter detection auxiliary device. Background Art

[0002] Tunnel Boring Machine (TBM) is the core equipment of modern tunnel engineering. Its cutterhead system is the core component directly involved in rock and soil cutting. The cutterhead is usually made of high-strength steel and has a disc-shaped structure. The surface of the cutterhead is arranged with tools with different functions according to the geological conditions, namely the hob.

[0003] Among them, the roller cutter is a key rock-breaking tool for excavation in hard rock formations. It crushes rocks through rolling, squeezing and shearing. Its performance directly affects the excavation efficiency, equipment life and project safety. Under complex geological conditions, the roller cutter is subjected to multiple effects such as high stress impact, abrasion and thermal load, and is prone to cutter jamming. At this time, it is necessary to stop the cutter for inspection, that is, the staff rotates the roller cutter in the cutterhead to check whether there is a cutter jam. Due to the narrow space inside the cutterhead, the staff can only place a lever on the fulcrum and continuously pry the roller cutter to rotate it to determine whether there is a rotation obstruction. If it is difficult to rotate, there may be a cutter jam. Due to the uneven force applied by manual labor each time and relying solely on experience, it is difficult to achieve more accurate detection, resulting in low efficiency of roller cutter detection. Summary of the Invention

[0004] The present invention discloses a TBM cutter disc cutter detection auxiliary device to solve the technical problems in the above-mentioned background technology.

[0005] The present invention discloses a TBM cutterhead hob detection auxiliary device, comprising a base and a rotating disk rotating thereon, wherein the outer arc surface of the rotating disk is provided with a positioning groove adapted to the outer edge of the hob cutter ring, and a fastening component for clamping the hob cutter edge is provided in the positioning groove;

[0006] A rotating shaft is provided in the rotating disk, a tongue is fixedly connected to the surface of the rotating shaft, an adjustment groove adapted to the tongue is provided in the rotating disk, and a concave block is provided through the adjustment groove, a groove adapted to the tongue is provided on the surface of the concave block, the concave block is connected to the rotating disk through a spring C, and also includes a driving assembly for driving the rotating shaft to drive the rotating disk to rotate.

[0007] Preferably, the fastening assembly includes several extrusion blocks, and the positioning groove is provided with several through holes for the extrusion blocks to slide. The extrusion block is connected to the rotating disk through a spring A. It also includes extrusion holes, which are opened in the positioning groove and distributed above and below the through holes. A card block adapted to the extrusion block is hinged in the extrusion hole.

[0008] Preferably, the clamping block includes an extrusion portion and a clamping portion, the extrusion portion abuts against the extrusion block, and the contact position between the extrusion block and the extrusion portion is set as an inclined surface. When the extrusion block moves toward the center of the rotating disk, the extrusion portion is subjected to the outward expansion force and moves in the direction away from the extrusion block, and the clamping portion at the other end of the clamping block moves toward the direction of the extrusion block, thereby clamping the outer edge of the hob.

[0009] Preferably, the extrusion portion is connected to the rotating disk via a spring B.

[0010] Preferably, it also includes a twist adjustment component, which includes an adjusting bolt, which is threadedly connected to the top surface of the rotating disk, and the end of the spring C away from the concave block is fixedly connected to a push block, and one end of the push block is fixedly connected to a movable block, and the surface of the movable block is provided with an inclined surface, and a pressure plate is provided at the bottom of the adjusting bolt, and the pressure plate abuts against the inclined surface of the movable block surface.

[0011] Preferably, the surface of the rotating disk is provided with a numerical scale adapted to the adjusting bolt, and the surface of the numerical scale is used to display the torque value.

[0012] Preferably, button switches are provided on both sides of the inner wall of the adjustment slot close to the latch.

[0013] Preferably, a nozzle is fixedly connected to the surface of the base, a pump body is installed on one side of the base, the output end of the pump body is connected to the nozzle, the suction end of the pump body is connected to a connecting pipe, and the pump body is electrically connected to a button switch.

[0014] Preferably, the driving assembly includes a motor fixedly connected to the surface of the base, a synchronous disk is fixedly connected to the top of the rotating shaft, and the output end of the motor is connected to the synchronous disk through a synchronous belt.

[0015] Preferably, two telescopic cylinders with opposite output directions are fixedly connected to the surface of the base.

[0016] Preferably, a hook is fixedly connected to the surface of the base.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a continuously rotatable rotating disk, and provides a stable torque through the driving component to continuously drive the hob to rotate, thereby improving the continuity of the hob rotation detection. When the rotation of the hob is blocked and the resistance to its rotation is greater than the elastic pressing force applied by the spring C, the tongue detaches from the surface of the concave block, triggering the button switch in time, thereby achieving the effect of stable, continuous and accurate detection of the hob stuck problem, thereby making up for the shortcomings of the existing technology.

[0019] The present invention provides a nozzle, so that when the cutter is stuck, the marking paint can be sprayed on the surface of the cutter through the pump body in time, indicating the position of the cutter stuck, so as to better remind the staff to perform further operations, or the marking paint can be replaced with lubricating oil, and the position of the nozzle can be changed. When the cutter is stuck, the lubricating oil can be sprayed to the cutter bearing to alleviate the cutter sticking phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a bottom view structural diagram of the present invention;

[0022] Figure 3 is a cross-sectional view of the present invention for illustrating the internal structure of the fastening assembly;

[0023] Figure 4 This is a schematic diagram of the present invention for illustrating the state of the rotating disk and the outer edge of the hob;

[0024] Figure 5 This is a cross-sectional view of the present invention for illustrating the internal structure of the rotating disk;

[0025] Figure 6 This invention Figure 5 A magnified view of point A in the figure;

[0026] Figure 7 It is a schematic diagram of the present invention for illustrating the torque adjustment component.

[0027] In the figure: 1. Base; 11. Telescopic cylinder; 12. Hook; 2. Rotating disk; 21. Positioning slot; 22. Extrusion block; 221. Spring A; 23. Clamping block; 231. Extrusion part; 232. Clamping part; 233. Spring B; 3. Nozzle; 31. Pump body; 32. Connecting pipe; 4. Rotating shaft; 41. Synchronizing disk; 411. Clamping tongue; 42. Concave block; 421. Spring C; 422. Push block; 423. Movable block; 43. Adjusting bolt; 431. Pressure plate; 432. Digital scale; 44. Motor; 441. Synchronous belt; 45. Push button switch. DETAILED DESCRIPTION

[0028] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. Furthermore, features described in some examples may be combined in other examples.

[0029] The embodiment of the present invention discloses a TBM cutterhead cutter detection auxiliary device, such as Figure 1 and Figure 2 As shown, it includes a base 1 and a rotating disk 2 rotating thereon, the outer arc surface of the rotating disk 2 is provided with a positioning groove 21 adapted to the outer edge of the hob cutter ring, and a fastening component for clamping the hob edge is provided in the positioning groove 21.

[0030] Specifically, by fastening the outer edge of the hob to be positioned in the positioning groove 21, the hob can be further driven to rotate synchronously by rotating the rotating disk 2. The rotating disk 2 drives the hob continuously, effectively compensating for the discontinuity and low efficiency of the existing prying hob rotation.

[0031] like Figure 6 and Figure 7 As shown, a rotating shaft 4 is provided in the rotating disk 2, and a tongue 411 is fixedly connected to the surface of the rotating shaft 4. An adjustment groove adapted to the tongue 411 is provided in the rotating disk 2, and a recessed block 42 is provided through the adjustment groove. The recessed block 42 slides in the adjustment groove with a limited position. A groove adapted to the tongue 411 is provided on the surface of the recessed block 42. The recessed block 42 is connected to the rotating disk 2 through a spring C421. Under normal conditions, under the elastic force of the spring C421, the tongue 411 will be stuck in the groove on the surface of the recessed block 42. A driving component is also included for driving the rotating shaft 4 to drive the rotating disk 2 to rotate.

[0032] Specifically, when the driving assembly drives the rotating shaft 4 to rotate, the rotating shaft 4 will drive the latch 411 to rotate synchronously. Since the latch 411 is stuck in the groove on the surface of the concave block 42, and the concave block 42 is limited to slide in the adjustment groove, the concave block 42 will be subjected to the torsional force to drive the rotating disk 2 to rotate, and then drive the hob to rotate, to detect the flexibility of the hob rotation. When the hob is stuck due to cracking, blockage or other reasons, the rotation of the hob is hindered, and further, the rotation of the rotating disk 2 is prevented. When the torsional force preventing the rotating disk 2 from rotating is greater than the force provided by the spring C421 to the concave block 42 to keep the latch 411 stable in the groove, the force of the driving assembly continuously driving the rotating shaft 4 to rotate will cause the latch 411 to disengage from the groove on the surface of the concave block 42, and then compress the spring C421. At this time, the latch 411 is not hindered by the concave block 42, and will hit the inner wall of the adjustment groove, making a sound, which is convenient for the staff to perceive in time and find that the hob is stuck at this time.

[0033] like Figure 3 and Figure 4As shown, in this embodiment, the fastening assembly includes a plurality of extrusion blocks 22, the number of which is determined according to the curvature of the outer edge surface of the hob to ensure that when the outer edge of the hob is inserted into the positioning groove 21, it abuts against the surface of at least one extrusion block 22. A plurality of through holes are provided in the positioning groove 21 for the extrusion blocks 22 to slide. The extrusion blocks 22 are connected to the rotating disk 2 through springs A221. The two ends of the spring A221 are fixedly connected to the extrusion blocks 22 and the rotating disk 2 respectively. When the outer edge of the hob wants to be inserted into the positioning groove 21 and pushes the extrusion block 22 inward, the extrusion block 22 is pressed to slide toward the through hole and compress the spring A221. It also includes extrusion holes, which are opened in the positioning groove 21 and distributed above and below the through hole. A card block 23 adapted to the extrusion block 22 is hinged in the extrusion hole.

[0034] Furthermore, the clamping block 23 includes an extrusion portion 231 and a clamping portion 232. The extrusion portion 231 abuts against the extrusion block 22, and the contact position between the extrusion block 22 and the extrusion portion 231 is set as an inclined surface. When the extrusion block 22 moves toward the center of the rotating disk 2, the extrusion portion 231 is subjected to the outward expansion force and moves in the direction away from the extrusion block 22, and the clamping portion 232 at the other end of the clamping block 23 moves toward the direction of the extrusion block 22, thereby clamping the outer edge of the hob.

[0035] The extrusion portion 231 is connected to the rotating disk 2 via a spring B233. The setting of the spring B233 facilitates the reset of the clamping block 23.

[0036] Specifically, when the rotating disk 2 is pushed toward the position close to the hob, the outer edge of the hob first contacts the extrusion block 22 at the position closest to it, and in the process of continuous advancement, the extrusion block 22 is pushed inward, causing it to move toward the center of the rotating disk 2. Since the surface of the extrusion block 22 is set as an inclined surface and the clamping block 23 is hinged in the extrusion hole, the continuous movement of the extrusion block 22 will drive the extrusion portion 231 abutting against the inclined surface to adjust its position. The extrusion portion 231 rotates around the hinge point of the clamping block 23, while the clamping portion 232 at the other end of the hinge point runs in the opposite direction to the extrusion portion 231, causing the clamping portion 232 to move toward the direction inside the positioning groove 21, and then contact and press against the outer edge surface of the hob. Since the clamping block 23 is set as two groups, the relative movement of the clamping portions 232 of the upper and lower groups is effective. It is clamped on the outer edge surface of the hob, providing a certain friction force, which facilitates the rotation of the rotating disk 2 to drive the hob to rotate.

[0037] It is worth noting that since the clamping force of the clamping portion 232 is proportional to the distance that the extrusion block 22 moves toward the center of the rotating disk 2, the closer the rotating disk 2 is to the cutter, the stronger the clamping force is. By converting the lateral force pushed by the rotating disk 2 into the shear force required for clamping, the stability of the cutter rotation is improved.

[0038] like Figure 5 、 Figure 6 and Figure 7 As shown, in this embodiment, a twist adjustment component is also included, which includes an adjusting bolt 43, which is threadedly connected to the top surface of the rotating disk 2, and the end of the spring C421 away from the recessed block 42 is fixedly connected to the push block 422, and one end of the push block 422 is fixedly connected to the movable block 423, and the surface of the movable block 423 is provided with an inclined surface, and a pressure plate 431 is provided at the bottom of the adjusting bolt 43, and the adjusting bolt 43 is threadedly connected to the surface of the pressure plate 431, and the pressure plate 431 is limited to slide in the adjusting groove, and the pressure plate 431 abuts against the inclined surface of the movable block 423.

[0039] Specifically, by rotating the adjusting bolt 43, the pressure plate 431 is driven to move downward synchronously during its downward movement. During this process, the pressure plate 431 moves downward on the inclined surface of the movable block 423, and relatively pushes the movable block 423 to move in the direction of the spring C421, thereby causing the push block 422 to further compress the spring C421. The elastic restoring force of the spring C421 increases, and the pressure on the recessed block 42 is further increased, thereby increasing the force required for the tongue 411 to disengage from the groove on the surface of the recessed block 42, thereby improving the torsional resistance of the entire rotating disk 2, making it easier to make corresponding adjustments according to the torsional force required by different hobs, and improving the applicability of the entire device.

[0040] The surface of the rotating disk 2 is provided with a numerical scale 432 adapted to the adjustment bolt 43. The surface of the numerical scale 432 is used to display the torque value. By rotating the adjustment bolt 43, the current torque can be more intuitively compared and displayed on the surface of the numerical scale 432.

[0041] like Figure 6 and Figure 7 As shown, button switches 45 are provided on both sides of the inner wall of the adjustment groove near the tongue 411. When the tongue 411 is disengaged from the groove on the surface of the recessed block 42, it will contact and press the button switch 45, so that the button switch 45 is triggered. The button switch 45 can be connected to an external buzzer or display device, etc., to promptly notify relevant personnel of the knife jam phenomenon when it is triggered.

[0042] Furthermore, a nozzle 3 is fixedly connected to the surface of the base 1, and a pump body 31 is installed on one side of the base 1. The output end of the pump body 31 is connected to the nozzle 3, and the suction end of the pump body 31 is connected to a connecting pipe 32. The connecting pipe 32 can be connected to an external paint container. The paint is used to mark the knife position on the surface of the roller at this time. The pump body 31 is electrically connected to the button switch 45.

[0043] Specifically, when the tongue 411 triggers the button switch 45, the button switch 45 transmits a signal to the pump body 31. A controller can be set in the pump body 31. The controller controls the pump body 31 to open, and sucks in the marking pigment in the external container through the connecting tube 32, and sprays the pigment to the surface of the roller through the nozzle 3, thereby marking. Furthermore, the roller surface and the roller groove position can be sprayed and marked at the same time, which is convenient for reminding relevant personnel that a tool jam problem occurs when the marking point on the roller surface rotates to the roller groove surface marking position.

[0044] Furthermore, the paint container can be replaced with a lubricating liquid container, and the spraying position of the nozzle 3 can be changed to the roller cutter rotating bearing position. In this way, when the cutter is stuck, the pump body 31 can spray the lubricating oil into the bearing position in time, reducing the occurrence of roller cutter sticking due to lubrication problems.

[0045] The drive assembly includes a motor 44 fixedly connected to the surface of the base 1, a synchronous disk 41 fixedly connected to the top of the rotating shaft 4, the output end of the motor 44 is connected to the synchronous disk 41 through a synchronous belt 441, and a synchronous roller is fixed to the output shaft of the motor 44. The synchronous belt 441 passes around the synchronous roller and the synchronous disk 41 respectively, so that when the motor 44 outputs rotation, the synchronous belt 441 drives the synchronous disk 41 to rotate. The motor 44 is a servo motor 44, which is convenient for controlling the output power and providing different torsional forces for different hobs.

[0046] The surface of the base 1 is fixedly connected to two telescopic cylinders 11 with opposite output directions. The two telescopic cylinders push in opposite directions synchronously, so as to facilitate fastening the base 1 to the inner wall of the cutter groove of the hob, thereby improving the stability of the entire device.

[0047] The surface of the base 1 is fixedly connected with a hook 12, which can be connected to a lifting hoist through the hook 12. It is suitable for narrow environments where the inner wall of the knife groove does not have fastening support conditions. The hook 12 can be lifted by the hoist to support the entire device.

[0048] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make more forms of equivalent embodiments based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A TBM cutterhead cutter detection auxiliary device, characterized in that: The invention comprises a base (1) and a rotating disk (2) rotating thereon, wherein the outer arc surface of the rotating disk (2) is provided with a positioning groove (21) adapted to the outer edge of the hob cutter ring, and a fastening component for clamping the hob cutter edge is provided in the positioning groove (21); A rotating shaft (4) is provided in the rotating disk (2), a latch tongue (411) is fixedly connected to the surface of the rotating shaft (4), an adjustment groove adapted to the latch tongue (411) is provided in the rotating disk (2), and a concave block (42) is provided through the adjustment groove, a groove adapted to the latch tongue (411) is provided on the surface of the concave block (42), the concave block (42) is connected to the rotating disk (2) via a spring C (421), and further comprises a driving assembly for driving the rotating shaft (4) to drive the rotating disk (2) to rotate.

2. A TBM cutterhead cutter detection auxiliary device according to claim 1, characterized in that: The fastening assembly includes a plurality of extrusion blocks (22), a plurality of through holes for the extrusion blocks (22) to slide are provided in the positioning groove (21), the extrusion blocks (22) are connected to the rotating disk (2) via a spring A (221), and further includes extrusion holes provided in the positioning groove (21) and distributed above and below the through holes, and a clamping block (23) adapted to the extrusion block (22) is hingedly connected in the extrusion hole.

3. The TBM cutterhead cutter detection auxiliary device according to claim 2, characterized in that: The clamping block (23) comprises an extrusion portion (231) and a clamping portion (232); the extrusion portion (231) abuts against the extrusion block (22); and the contact position between the extrusion block (22) and the extrusion portion (231) is set as an inclined surface. When the extrusion block (22) moves toward the center of the rotating disk (2), the extrusion portion (231) is moved in a direction away from the extrusion block (22) by an outward expansion force, and the clamping portion (232) at the other end of the clamping block (23) moves toward the extrusion block (22), thereby clamping the outer edge of the hob.

4. The TBM cutterhead hob detection auxiliary device according to claim 3 is characterized in that: The extrusion portion (231) is connected to the rotating disk (2) via a spring B (233).

5. The TBM cutterhead hob detection auxiliary device according to claim 1, characterized in that: The invention also includes a twist adjustment component, wherein the twist adjustment component includes an adjustment bolt (43) which is threadedly connected to the top surface of the rotating disk (2); one end of the spring C (421) away from the concave block (42) is fixedly connected to a push block (422); one end of the push block (422) is fixedly connected to a movable block (423); a surface of the movable block (423) is provided with an inclined surface; a pressure plate (431) is provided at the bottom of the adjustment bolt (43); the pressure plate (431) abuts against the inclined surface of the surface of the movable block (423).

6. The TBM cutterhead hob detection auxiliary device according to claim 1, characterized in that: Push button switches (45) are provided on both sides of the inner wall of the adjustment slot near the latch (411).

7. A TBM cutterhead cutter detection auxiliary device according to claim 1 or 6, characterized in that: A nozzle (3) is fixedly connected to the surface of the base (1), a pump body (31) is installed on one side of the base (1), an output end of the pump body (31) is connected to the nozzle (3), a suction end of the pump body (31) is connected to a connecting pipe (32), and the pump body (31) is electrically connected to a button switch (45).

8. The TBM cutterhead hob detection auxiliary device according to claim 1, characterized in that: The driving assembly comprises a motor (44) fixedly connected to the surface of the base (1); a synchronous disk (41) is fixedly connected to the top of the rotating shaft (4); and an output end of the motor (44) is connected to the synchronous disk (41) via a synchronous belt (441).

9. The TBM cutterhead hob detection auxiliary device according to claim 1, characterized in that: Two telescopic cylinders (11) with opposite output directions are fixedly connected to the surface of the base (1).

10. The TBM cutterhead hob detection auxiliary device according to claim 1, characterized in that: A hook (12) is fixedly connected to the surface of the base (1).

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