Shield tunneling machine hob abrasion detection device

Abstract

The utility model relates to the technical field of shield tunneling machine construction equipment monitoring, and discloses a shield tunneling machine hob abrasion detection device which comprises a tool rest, a supporting frame is arranged on the outer wall of the tool rest, a bottom plate is fixedly connected to the inner wall of the supporting frame, and a motor is fixedly connected to the outer wall of the bottom plate. The output end of the motor is fixedly provided with a two-way threaded rod, the outer wall of the two-way threaded rod is in threaded connection with a supporting frame, the outer wall of the supporting frame is slidably connected to the outer wall of the bottom plate, the interior of the supporting frame is slidably connected with a limiting column and a sliding rail, and the outer wall of the sliding rail is fixedly connected to the outer wall of the bottom plate. According to the utility model, the motor drives the bidirectional threaded rod to adjust the wear sensing wheel, so that the wear sensing wheel is tightly attached to the hob, the wear state is monitored in real time, the damage of a shield tunneling machine or a tunnel structure caused by the unbalance of the cutter head is avoided, and the change of the position of the hob under different working conditions can be adapted; and therefore, the effect of accurately monitoring the abrasion of the hobbing cutter under various conditions can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of monitoring technology for tunnel boring machine (TBM) construction equipment, and in particular to a TBM cutter wear detection device. Background Technology

[0002] As the core equipment in tunnel construction, the wear condition of the cutterhead of a tunnel boring machine (TBM) directly affects tunneling efficiency, construction safety, and equipment lifespan. In hard rock or complex strata, the cutterhead is subjected to enormous impact and friction, making it prone to abnormal wear, chipping, or cracks. If these problems are not detected in time, they may lead to cutterhead imbalance, malfunction of tunneling parameters, or even equipment failure or tunnel construction accidents.

[0003] A search revealed a shield tunneling machine cutterhead wear detection device in publication number CN220751980U. The device includes a cutterhead and an adsorption plate disposed on one side of the cutterhead. A detection frame is located on one side of the adsorption plate, and a cutter groove is formed on one side of the detection frame. The cutterhead is located within the cutter groove, and a probe for detecting cutterhead wear is inserted through the bottom of the detection frame. Two fixing plates are fixedly connected to one side of the adsorption plate, and a pneumatic wheel for rotating the cutterhead is disposed between the two fixing plates. A scraper for scraping soil from the outer wall of the cutterhead is slidably disposed on one side of the adsorption plate. A transmission mechanism, disposed on one side of the adsorption plate, drives the pneumatic wheel to rotate and moves the scraper to scrape soil from the outer wall of the cutterhead. This invention, by starting a motor, can not only drive the cutterhead to rotate but also drive the scraper to scrape soil from the cutterhead. The diameter of the pneumatic wheel can also be changed to allow the cutterhead to rotate before and after soil removal.

[0004] The aforementioned application did not mention how to ensure a tight fit between the detection device and the cutter head for accurate wear detection. In the actual working environment of a tunnel boring machine, the cutter head will shift position due to factors such as vibration and stress changes during the tunneling process. If the detection device cannot maintain a tight fit with the cutter head at all times, the wear detection data will be inaccurate, making it impossible to detect abnormal wear conditions of the cutter head in a timely manner. Consequently, it will be difficult to adapt to changes in the cutter head position under different working conditions, and it cannot guarantee accurate monitoring of cutter head wear under all circumstances. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a shield machine cutter wear detection device, which aims to improve the problem that previous detection devices could not adapt to changes in the cutter position under different working conditions and could not guarantee accurate monitoring of cutter wear under various circumstances.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tunnel boring machine cutter wear detection device includes a cutter holder, a support frame on the outer wall of the cutter holder, a base plate fixedly connected to the inner wall of the support frame, a motor fixedly connected to the outer wall of the base plate, a bidirectional threaded rod fixedly provided at the output end of the motor, a support frame threadedly connected to the outer wall of the bidirectional threaded rod, a support frame slidably connected to the outer wall of the support frame, a limit post and a slide rail slidably connected inside the support frame, the outer wall of the slide rail fixedly connected to the outer wall of the base plate, a wear sensing wheel rotatably connected to the outer wall of the support frame, and a rotating assembly inside the cutter holder.

[0008] The above technical solution achieves real-time monitoring of the cutter body through the contact between the wear sensing wheel and the cutter body. It can also detect differences in cutter wear in a timely manner, and prevent damage to the tunnel boring machine and tunnel structure caused by cutterhead imbalance by adjusting tunneling parameters or replacing severely worn cutters.

[0009] As a further description of the above technical solution:

[0010] The rotating assembly includes a limiting shaft, the outer wall of which is fixedly connected to the inside of the tool holder, and the outer wall of the limiting shaft is rotatably connected to a hob body, the outer wall of which is rotatably connected to the outer wall of the wear sensing wheel.

[0011] Through the above technical solution: the tool holder plays the role of supporting the limiting shaft, and the limiting shaft plays the role of supporting the limiting hob body.

[0012] As a further description of the above technical solution:

[0013] A connecting block is fixedly connected inside the support frame, and a limiting cylinder is fixedly connected inside the connecting block.

[0014] The above technical solution involves a support frame that supports the limiting connecting block, which in turn supports and fixes the limiting cylinder.

[0015] As a further description of the above technical solution:

[0016] A handle is fixedly connected inside the limiting cylinder, and a spring is fixedly connected to the outer wall of the handle.

[0017] The above technical solution provides support for the limit handle and the spring, with the handle also limiting the spring's position, thus ensuring the spring's stability during operation.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the spring is slidably connected to the inner wall of the connecting block, and the outer wall of the handle is fixedly connected to a connecting post.

[0020] The above technical solution achieves the effect of locking the pin in the connecting cylinder by the rebound action of the spring, with the handle serving to support and limit the connecting pin.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the connecting column is slidably connected to the inside of the connecting block and the limiting cylinder, and a retaining column is fixedly connected inside the connecting column.

[0023] The above technical solution provides a solution where the connecting column supports and connects to the locking column, thereby limiting the position of the locking column. The connecting block and the limiting cylinder together support and limit the connecting column.

[0024] As a further description of the above technical solution:

[0025] The outer walls of both the connecting column and the locking column are slidably connected to a connecting cylinder, and the outer wall of the connecting cylinder is fixedly connected to a limit block.

[0026] The above technical solution involves a connecting cylinder that uses a locking post to limit the connecting column, and a limiting block that supports and fixes the connecting cylinder.

[0027] As a further description of the above technical solution:

[0028] The outer wall of the limiting block is fixedly connected to the inside of the tool holder, and the outer wall of the limiting block is in contact with the outer wall of the connecting block.

[0029] The above technical solution allows for better positioning of the locking pin by using the tool holder to support and fix the limiting block, which in turn supports and limits the connecting cylinder.

[0030] This utility model has the following beneficial effects:

[0031] 1. In this utility model, the wear sensing wheel is adjusted by a motor-driven bidirectional threaded rod to make it closely fit the cutter head and monitor the wear status in real time. Once abnormal wear, cracks or uneven wear are detected, the tunneling parameters can be adjusted or the cutter head can be replaced in time, so as to avoid damage to the tunnel boring machine or the tunnel structure due to the imbalance of the cutter head. In this way, it can adapt to the change of the cutter head position under different working conditions, and thus ensure the effect of accurate monitoring of cutter head wear under various conditions.

[0032] 2. In this utility model, the support frame and the cutter holder can be installed by pressing and rotating through the linkage structure of the rotating handle and the spring buckle, without the need for complicated tools or long-term debugging. This greatly shortens the disassembly and assembly time of the detection device, reduces the downtime of the tunnel boring machine due to maintenance, ensures efficient and continuous tunneling operations, thereby improving the overall construction efficiency and accelerating the progress of the tunnel project. Attached Figure Description

[0033] Figure 1 This is a perspective view of a tunnel boring machine cutter wear detection device proposed in this utility model;

[0034] Figure 2 This is a partial structural diagram of the support frame of a tunnel boring machine cutter wear detection device proposed in this utility model;

[0035] Figure 3 This is a partial structural diagram of the slide rail of a tunnel boring machine cutter wear detection device proposed in this utility model;

[0036] Figure 4 This is a partial structural diagram of the handle of a tunnel boring machine cutter wear detection device proposed in this utility model.

[0037] Legend:

[0038] 1. Tool holder; 2. Support frame; 3. Base plate; 4. Motor; 5. Two-way threaded rod; 6. Support frame; 7. Limiting post; 8. Slide rail; 9. Wear sensing wheel; 10. Limiting shaft; 11. Hob body; 12. Connecting block; 13. Limiting cylinder; 14. Handle; 15. Spring; 16. Connecting post; 17. Locking post; 18. Connecting cylinder; 19. Limiting block; 20. Rotating assembly. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a shield machine cutter wear detection device, including a cutter holder 1, a support frame 2 provided on the outer wall of the cutter holder 1, a base plate 3 fixedly connected to the inner wall of the support frame 2, a motor 4 fixedly connected to the outer wall of the base plate 3, a bidirectional threaded rod 5 fixedly provided at the output end of the motor 4, a support frame 6 threadedly connected to the outer wall of the bidirectional threaded rod 5, a support frame 6 slidably connected to the outer wall of the base plate 3, a limit post 7 and a slide rail 8 slidably connected inside the support frame 6, a slide rail 8 fixedly connected to the outer wall of the base plate 3, a wear sensing wheel 9 rotatably connected to the outer wall of the support frame 6, and a rotating assembly 20 provided inside the cutter holder 1;

[0041] Specifically, the tool holder 1 serves to support and limit the support frame 2. The motor 4 drives the bidirectional threaded rod 5 to rotate, which in turn drives the two support frames 6 to slide on the slide rail 8. The slide rail 8 provides the motion trajectory for the support frames 6, thus ensuring the stability of the support frames 6 during sliding. At this time, the limiting post 7 slides towards each other between the two support frames 6. The limiting post 7 limits and stabilizes the sliding trajectory of the support frames 6. The limiting post 7 can be located within the support frames 6. The wear sensor wheel 9 slides but does not slide out of the support frame 6. Under the driving action of the support frame 6, the wear sensor wheel 9 is brought into contact with the hob body 11. When the hob body 11 rotates, it drives the wear sensor wheel 9 to rotate on the support frame 6. The support frame 6 supports and limits the wear sensor wheel 9. The wear sensor wheel 9 can then detect the hob body 11. The wear sensor wheel 9 is composed of a wear-resistant ceramic substrate and an embedded fiber optic grating array, and is fixed to the non-cutting surface of the hob ring by high-strength bolts.

[0042] Reference Figure 2 and Figure 3 The rotating assembly 20 includes a limiting shaft 10, the outer wall of which is fixedly connected to the inside of the tool holder 1, and the outer wall of the limiting shaft 10 is rotatably connected to the hob body 11, and the outer wall of the hob body 11 is rotatably connected to the outer wall of the wear sensing wheel 9.

[0043] Specifically, the tool holder 1 serves to support the limiting shaft 10, and the limiting shaft 10 serves to support the limiting hob body 11.

[0044] Reference Figure 1 , Figure 2 and Figure 4 A connecting block 12 is fixedly connected inside the support frame 2, and a limiting cylinder 13 is fixedly connected inside the connecting block 12; a handle 14 is fixedly connected inside the limiting cylinder 13, and a spring 15 is fixedly connected to the outer wall of the handle 14; the outer wall of the spring 15 is slidably connected to the inner wall of the connecting block 12, and a connecting post 16 is fixedly connected to the outer wall of the handle 14; the outer wall of the connecting post 16 is slidably connected inside the connecting block 12 and the limiting cylinder 13, and a locking post 17 is fixedly connected inside the connecting post 16; a connecting cylinder 18 is slidably connected to the outer walls of both the connecting post 16 and the locking post 17, and a limiting block 19 is fixedly connected to the outer wall of the connecting cylinder 18.

[0045] Specifically, rotating the handle 14 aligns the connecting post 16 and the locking post 17 with the slots on the connecting cylinder 18. Pressing the handle 14 causes it to slide within the limiting cylinder 13 while simultaneously squeezing the spring 15. The limiting cylinder 13 supports the limiting handle 14. The handle 14 facilitates the installation and removal of the support frame 2. The locking post 17 enters the connecting cylinder 18 through the slot. Rotating the handle 14 ninety degrees and the spring 15 then locks the locking post 17 into the connecting cylinder 18, thus installing the support frame 2 onto the tool holder 1.

[0046] Reference Figure 2 and Figure 4 The outer wall of the limiting block 19 is fixedly connected to the inside of the tool holder 1, and the outer wall of the limiting block 19 is in contact with the outer wall of the connecting block 12;

[0047] Specifically, the tool holder 1 serves to support and fix the limiting block 19, which in turn supports and limits the connecting cylinder 18, thereby better limiting the locking post 17.

[0048] Working principle: When the device is needed, first install the support frame 2 onto the tool holder 1. Then, simply rotate the handle 14. The handle 14 will drive the connecting column 16 and the locking column 17 to align with the slots on the connecting cylinder 18. Then, press the handle 14, which will slide in the limiting cylinder 13 and squeeze the spring 15. At this time, the locking column 17 will enter the connecting cylinder 18 through the slot. Then, rotate the handle 14 ninety degrees. Under the rebound of the spring 15, the locking column 17 can be locked in the connecting cylinder 18, and the support frame 2 can be installed onto the tool holder 1.

[0049] Then start the motor 4, which drives the bidirectional threaded rod 5 to rotate. The bidirectional threaded rod 5 then drives the two support frames 6 to slide on the slide rail 8. At this time, the limit post 7 will slide towards each other in the two support frames 6. Driven by the support frames 6, the wear sensing wheel 9 can be made to fit with the hob body 11. When the hob body 11 rotates, it can drive the wear sensing wheel 9 to rotate on the support frame 6. The wear sensing wheel 9 can then be used to detect the hob body 11.

[0050] This device not only achieves the effect of quick installation on the cutterhead 1, thereby reducing the downtime of the tunnel boring machine and enabling it to resume tunneling operations more quickly, thus improving the overall construction efficiency, but also ensures that the tunnel boring machine will not frequently stop due to installation problems of the detection device during construction, thereby accelerating the construction progress of the entire tunnel and shortening the construction period.

[0051] It also achieves the effect of real-time monitoring of the cutterhead body 11, which can promptly detect abnormal wear of the cutterhead, such as excessive wear or cracks. At the same time, it can also promptly detect differences in cutterhead wear, and by adjusting the tunneling parameters or replacing the severely worn cutterhead, the balance of the cutterhead can be ensured, thus avoiding damage to the tunnel boring machine and tunnel structure caused by cutterhead imbalance.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting wear of a disc cutter of a tunnel boring machine, comprising a cutter holder (1), characterized in that: The outer wall of the tool holder (1) is provided with a support frame (2), the inner wall of the support frame (2) is fixedly connected with a base plate (3), the outer wall of the base plate (3) is fixedly connected with a motor (4), the output end of the motor (4) is fixedly provided with a bidirectional threaded rod (5), the outer wall of the bidirectional threaded rod (5) is threadedly connected with a support frame (6), the outer wall of the support frame (6) is slidably connected to the outer wall of the base plate (3), the inner wall of the support frame (6) is slidably connected with a limit post (7) and a slide rail (8), the outer wall of the slide rail (8) is fixedly connected to the outer wall of the base plate (3), the outer wall of the support frame (6) is rotatably connected with a wear sensing wheel (9), and the inner wall of the tool holder (1) is provided with a rotating assembly (20).

2. The device for detecting the wear of a disc cutter of a tunneling machine according to claim 1, characterized in that: The rotating assembly (20) includes a limiting shaft (10), the outer wall of which is fixedly connected to the inside of the tool holder (1), and the outer wall of the limiting shaft (10) is rotatably connected to a hob body (11), the outer wall of which is rotatably connected to the outer wall of the wear sensing wheel (9).

3. The tool wear detection device of claim 1, wherein: The support frame (2) is fixedly connected to a connecting block (12), and the connecting block (12) is fixedly connected to a limiting cylinder (13).

4. The tool wear detection device of claim 3, wherein: The inner part of the limiting cylinder (13) is fixedly connected to a handle (14), and the outer wall of the handle (14) is fixedly connected to a spring (15).

5. The device for detecting the wear of a disc cutter of a tunnel boring machine according to claim 4, characterized in that: The outer wall of the spring (15) is slidably connected to the inner wall of the connecting block (12), and the outer wall of the handle (14) is fixedly connected to the connecting post (16).

6. The disc cutter wear detection device of claim 5, wherein: The outer wall of the connecting column (16) is slidably connected to the inside of the connecting block (12) and the limiting cylinder (13), and a locking column (17) is fixedly connected inside the connecting column (16).

7. The device for detecting the wear of a disc cutter of a tunneling machine according to claim 6, characterized in that: The outer walls of the connecting column (16) and the locking column (17) are slidably connected to the connecting cylinder (18), and the outer wall of the connecting cylinder (18) is fixedly connected to the limiting block (19).

8. The device for detecting the wear of a disc cutter of a tunneling machine according to claim 7, characterized in that: The outer wall of the limiting block (19) is fixedly connected to the inside of the tool holder (1), and the outer wall of the limiting block (19) is in contact with the outer wall of the connecting block (12).

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