Wear-resistant tunneling tooth

Abstract

The utility model relates to the technical field of tunneling tooth production, and discloses a wear-resistant tunneling tooth which comprises a sleeve serving as a connecting body, the sleeve is connected with a connecting column through a sliding assembly, the top end of the connecting column is fixedly connected with a tooth head, and the two sides of the inner wall of the sleeve are fixedly connected with fixing boxes. Fixing rods are fixedly connected to the inner walls of the fixing boxes, moving blocks are slidably connected to the two sides of the outer walls of the fixing rods, rotating plates are rotatably connected to the top ends of the moving blocks, second springs are arranged between the fixing boxes and the inner walls of the moving blocks, and the bottom ends of the connecting columns are rotatably connected to the top ends of the rotating plates. The tooth head drives the connecting column, the connecting column drives the rotating plate, the rotating plate drives the moving block, and the moving block can abut against the second spring for buffering, so that impact force can be absorbed and dispersed, direct impact on the tunneling tooth is reduced, the abrasion degree is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of tunneling tooth manufacturing technology, and in particular to a wear-resistant tunneling tooth. Background Technology

[0002] Tunnel boring machine (TBM) cutters are cutting tools used in tunnel boring machines to excavate rock and soil in underground engineering projects. They are typically made of high-strength alloy steel, possessing wear-resistant, corrosion-resistant, and high-temperature-resistant properties. They are usually mounted on the cutterhead of the TBM and excavate underground rock and soil through rotation and cutting.

[0003] Existing tunneling machine cutting teeth are prone to wear at the cutting head due to prolonged cutting operations, reducing their service life and decreasing cutting efficiency. This affects the operation of the tunneling machine and reduces work efficiency. Furthermore, the cutting operation causes impact on the cutting teeth, and prolonged impact can damage the internal structure of the cutting teeth, further reducing their service life and work efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wear-resistant tunneling tooth. The tooth head drives a connecting column, which in turn drives a rotating plate. The rotating plate then drives a moving block, which in turn abuts against a second spring buffer. This absorbs and disperses the impact force, reduces the direct impact on the tunneling tooth, lowers the wear level, and extends its service life.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A wear-resistant tunneling tooth, comprising:

[0007] As the connecting body, the sleeve is connected to a connecting post via a sliding assembly. A toothed head is fixedly connected to the top of the connecting post. Fixed boxes are fixedly connected to both sides of the inner wall of the sleeve. Fixed rods are fixedly connected to the inner walls of the fixed boxes. Moving blocks are slidably connected to both sides of the outer walls of the fixed rods. Rotating plates are rotatably connected to the top of each moving block. A second spring is provided between the inner walls of the fixed boxes and the moving blocks. The bottom end of the connecting post is rotatably connected to the top of the rotating plate. An installation assembly is provided on the outer wall of the sleeve.

[0008] Furthermore, the sliding assembly includes a sliding groove located on the inner wall of the sleeve, and a slider is slidably connected to the inner wall of the sliding groove. The opposite end of the slider is fixedly connected to the outer wall of the connecting column.

[0009] Furthermore, one end of each of the second springs is connected to the movable block, and the other end of each of the second springs is connected to the inner wall of the fixed box.

[0010] Furthermore, telescopic rods are fixedly connected to both sides of the top end of the inner wall of the sleeve, and the top ends of the telescopic rods are fixedly connected to the bottom end of the connecting column.

[0011] Furthermore, the outer wall of the tooth is provided with an installation sleeve.

[0012] Furthermore, the installation assembly includes a connector that is slidably connected to the outer wall of the sleeve. Connecting boxes are fixedly connected to both sides of the inner wall of the connector. Pull rods are slidably connected to the inner walls of the connecting boxes. Limiting plates are fixedly connected to the outer walls of the pull rods. A first spring is provided between the inner walls of the connecting boxes and the limiting plates.

[0013] Furthermore, the inner wall of the sleeve is provided with a fixing hole corresponding to the tie rod.

[0014] Furthermore, one end of each of the first springs is connected to the limiting plate, and the other end of each of the first springs is connected to the inner wall of the connecting box. The outer wall of the limiting plate is slidably connected to the inner wall of the connecting box.

[0015] This utility model has the following beneficial effects:

[0016] In this invention, the toothed head drives the connecting column, the connecting column drives the rotating plate, the rotating plate drives the moving block, and the moving block resists the second spring buffer, thereby absorbing and dispersing the impact force, reducing the direct impact on the tunneling teeth, reducing wear, and extending service life.

[0017] In this invention, the sleeve is removed and replaced by disengaging the pull rod from the fixing hole. During installation, the pull rod is loosened, at which point the first spring springs the limiting plate, and the limiting plate drives the pull rod to insert into the fixing hole for fixation. This allows for flexible adjustment or replacement of the cutting teeth according to different working conditions or geological conditions, in order to adapt to various needs and improve the efficiency and effectiveness of the operation. Attached Figure Description

[0018] Figure 1 This is an isometric view of a wear-resistant tunneling tooth proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the sleeve structure of a wear-resistant tunneling tooth proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the fixing box for a wear-resistant tunneling tooth proposed in this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the connecting box structure of a wear-resistant tunneling tooth proposed in this utility model.

[0022] Legend:

[0023] 1. Sleeve; 2. Slide groove; 3. Slider; 4. Connecting column; 5. Tooth head; 6. Mounting sleeve; 7. Telescopic rod; 8. Fixing box; 9. Fixing rod; 10. Moving block; 11. Rotating plate; 12. Connecting piece; 13. Connecting box; 14. Limiting plate; 15. Pull rod; 16. First spring; 17. Fixing hole; 18. Second spring. Detailed Implementation

[0024] 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.

[0025] Reference Figure 1 - Figure 3 One embodiment of this utility model is a wear-resistant tunneling tooth, comprising:

[0026] The sleeve 1, serving as the connecting body, is connected to a connecting post 4 via a sliding assembly. A toothed head 5 is fixedly connected to the top of the connecting post 4. Fixing boxes 8 are fixedly connected to both sides of the inner wall of the sleeve 1. Fixing rods 9 are fixedly connected to the inner walls of each fixing box 8. Moving blocks 10 are slidably connected to both sides of the outer walls of each fixing rod 9. A rotating plate 11 is rotatably connected to the top of each moving block 10. A second spring 18 is provided between the inner walls of the fixing boxes 8 and the moving blocks 10. The bottom end of the connecting post 4 is rotatably connected to the top end of the rotating plate 11. The outer wall of the sleeve 1 is provided with an installation component. The sliding component includes a slide groove 2 located on the inner wall of the sleeve 1. The inner wall of the slide groove 2 is slidably connected to a slider 3. The opposite end of the slider 3 is fixedly connected to the outer wall of the connecting column 4. One end of the second spring 18 is connected to the moving block 10, and the other end of the second spring 18 is connected to the inner wall of the fixed box 8. The top two sides of the inner wall of the sleeve 1 are fixedly connected to telescopic rods 7. The top ends of the telescopic rods 7 are fixedly connected to the bottom end of the connecting column 4. The outer wall of the tooth head 5 is provided with an installation sleeve 6.

[0027] Specifically, after the tunneling machine starts, the tooth 5 begins to cut rock or soil. As the tooth 5 moves, the connecting column 4 also moves. The movement of the connecting column 4 guides the rotating plate 11 to move, thereby driving the moving block 10 to move. When the moving block 10 moves, it will press against the second spring 18, producing a buffering effect. This buffering mechanism can absorb and disperse the impact force, thereby reducing the direct impact on the tunneling teeth, reducing wear and extending their service life. At the same time, the movement of the connecting column 4 also causes the slider 3 to slide inside the slide groove 2. The cooperation between the slider 3 and the slide groove 2 enhances the stability of the connecting column 4 during movement. In addition, the mounting sleeve 6 is made of tungsten carbide hard alloy, which significantly improves the wear resistance of the tooth 5, making it more durable under various cutting conditions.

[0028] Reference Figure 1 and Figure 4 The installation assembly includes a connector 12 that is slidably connected to the outer wall of the sleeve 1. Connecting boxes 13 are fixedly connected to both sides of the inner wall of the connector 12. Pull rods 15 are slidably connected to the inner walls of the connecting boxes 13. Limiting plates 14 are fixedly connected to the outer walls of the pull rods 15. A first spring 16 is provided between the inner walls of the connecting boxes 13 and the limiting plates 14. Fixing holes 17 are provided on the inner wall of the sleeve 1 corresponding to the pull rods 15. One end of the first spring 16 is connected to the limiting plate 14, and the other end of the first spring 16 is connected to the inner wall of the connecting box 13. The outer walls of the limiting plates 14 are slidably connected to the inner walls of the connecting boxes 13.

[0029] Specifically, when it is necessary to replace the sleeve 1, first pull the pull rod 15 to disengage it from the fixing hole 17. After successful disengagement, the sleeve 1 can be removed and replaced. After replacement, insert the new sleeve 1 into the connector 12, and then release the pull rod 15. At this time, the first spring 16 will cause the limiting plate 14 to spring. The movement of the limiting plate 14 will drive the pull rod 15 to move inward, so that it is re-inserted into the fixing hole 17, thereby completing the fixation. Through this design, the cutting teeth can be flexibly adjusted or replaced according to different working conditions or geological conditions to meet various operational needs, thereby improving work efficiency and effect.

[0030] Working Principle: First, the tunneling machine is started, driving the tooth head 5 to cut rock or soil. As the tooth head 5 moves, it moves the connecting column 4, which in turn moves the rotating plate 11. The rotating plate 11 then moves the moving block 10. The moving block 10, as it moves, presses against the second spring 18, providing cushioning and absorbing impact, reducing direct impact on the tunneling teeth, decreasing wear, and extending service life. As the connecting column 4 moves, it causes the slider 3 to slide inside the groove 2. The cooperation between the slider 3 and the groove 2 improves the stability of the connecting column 4 during movement. The sleeve 6 is made of tungsten carbide hard alloy, which improves the wear resistance of the tooth 5. When the sleeve 1 needs to be replaced, pull the pull rod 15 to disengage it from the inside of the fixing hole 17. When disengaged, the sleeve 1 is removed for replacement. After replacement, the sleeve 1 is inserted into the inside of the connector 12, and then the pull rod 15 is released. At this time, the first spring 16 will spring the limiting plate 14. When the limiting plate 14 is springed, it drives the pull rod 15 to move. When the pull rod 15 moves, it will be inserted into the fixing hole 17 for fixation. Thus, the cutting teeth can be flexibly adjusted or replaced according to different working conditions or geological conditions to adapt to various needs and improve the efficiency and effect of operation.

[0031] 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 wear-resistant tunneling tooth, characterized in that, include: The sleeve (1) serves as the main connecting component. The sleeve (1) is connected to a connecting post (4) via a sliding assembly. A tooth (5) is fixedly connected to the top of the connecting post (4). Fixed boxes (8) are fixedly connected to both sides of the inner wall of the sleeve (1). Fixed rods (9) are fixedly connected to the inner walls of the fixed boxes (8). Moving blocks (10) are slidably connected to both sides of the outer walls of the fixed rods (9). A rotating plate (11) is rotatably connected to the top of each moving block (10). A second spring (18) is provided between the inner walls of the fixed boxes (8) and the moving blocks (10). The bottom end of the connecting post (4) is rotatably connected to the top end of the rotating plate (11). An installation assembly is provided on the outer wall of the sleeve (1).

2. The wear-resistant tunneling tooth according to claim 1, characterized in that: The sliding assembly includes a groove (2) located on the inner wall of the sleeve (1), and a slider (3) is slidably connected to the inner wall of the groove (2). The opposite end of the slider (3) is fixedly connected to the outer wall of the connecting column (4).

3. The wear-resistant tunneling tooth according to claim 1, characterized in that: One end of the second spring (18) is connected to the moving block (10), and the other end of the second spring (18) is connected to the inner wall of the fixed box (8).

4. The wear-resistant tunneling tooth according to claim 1, characterized in that: The top two sides of the inner wall of the sleeve (1) are fixedly connected to telescopic rods (7), and the top ends of the telescopic rods (7) are fixedly connected to the bottom end of the connecting column (4).

5. The wear-resistant tunneling tooth according to claim 1, characterized in that: The outer wall of the tooth (5) is provided with an installation sleeve (6).

6. The wear-resistant tunneling tooth according to claim 1, characterized in that: The installation assembly includes a connector (12) that is slidably connected to the outer wall of the sleeve (1). Connecting boxes (13) are fixedly connected to both sides of the inner wall of the connector (12). Pull rods (15) are slidably connected to the inner walls of the connecting boxes (13). Limiting plates (14) are fixedly connected to the outer walls of the pull rods (15). A first spring (16) is provided between the inner walls of the connecting boxes (13) and the limiting plates (14).

7. The wear-resistant tunneling tooth according to claim 6, characterized in that: The inner wall of the sleeve (1) is provided with a fixing hole (17) corresponding to the tie rod (15).

8. The wear-resistant tunneling tooth according to claim 6, characterized in that: One end of the first spring (16) is connected to the limiting plate (14), and the other end of the first spring (16) is connected to the inner wall of the connecting box (13). The outer wall of the limiting plate (14) is slidably connected to the inner wall of the connecting box (13).

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