Adjustable depth of cut shield cutter

Abstract

The utility model discloses a shield cutter of adjustable cutting depth, including cutter head and mounting disc, the outer surface of cutter head is equipped with several annular arrangement's strip shape mouth, the inner wall of every strip shape mouth all is equipped with a group of sliding groove, the inner wall of every strip shape mouth all slidingly connects with cutter, every cutter's outer surface all fixedly installs a group of connecting blocks, every connecting block all with sliding groove slidingly connected, the outer surface fixed mounting of mounting disc has two hydraulic oil cylinders. The device installs two hydraulic oil cylinders on the outer surface of mounting disc, and makes the output end of two hydraulic oil cylinders with the outer surface fixed mounting of connecting disc, so that can adjust the position of connecting disc through controlling two hydraulic oil cylinders, through the outer surface of connecting disc with every group of connecting block's one end fixed mounting, so that connecting disc can drive the position adjustment of connecting block and cutter when moving, and then can conveniently adjust the cutting depth.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling technology, and in particular to a shield cutting tool with adjustable cutting depth. Background Technology

[0002] During tunnel boring machine (TBM) construction, the cutting tools are a key component of the TBM, and their performance directly affects the tunneling efficiency and construction cost. Currently, the cutting depth of TBM cutting tools is mostly fixed, making it difficult to adapt to changes in different geological conditions.

[0003] In actual construction, uneven strata are often encountered. When the strata change from soft soil to hard rock, the cutter with a fixed cutting depth either has low cutting efficiency in soft soil or suffers severe wear and shortened lifespan in hard rock due to improper cutting depth. In some cases, the cutter may even be damaged or jammed, which will affect the normal tunneling of the tunnel boring machine and increase construction costs and risks. To address these issues, we propose a tunnel boring machine cutter with adjustable cutting depth. Utility Model Content

[0004] The purpose of this invention is to provide a shield cutting tool with adjustable cutting depth to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable cutting depth shield cutter includes a cutterhead and a mounting plate. The outer surface of the cutterhead has several annularly arranged strip-shaped openings. The inner wall of each strip-shaped opening has a set of sliding grooves. A cutter is slidably connected to the inner wall of each strip-shaped opening. A set of connecting blocks is fixedly installed on the outer surface of each cutter. Each connecting block is slidably connected to the sliding groove. Two hydraulic cylinders are fixedly installed on the outer surface of the mounting plate. The output ends of the two hydraulic cylinders are jointly fixedly installed on the connecting plate. One end of each set of connecting blocks is fixedly installed to the outer surface of the connecting plate.

[0007] In a further embodiment, a plurality of ring-shaped support columns are fixedly installed on the outer surface of the mounting plate, and one end of each support column is fixedly installed to the outer surface of the cutter head.

[0008] In a further embodiment, a rotating shaft is fixedly mounted on the outer surface of the cutter head, and a plurality of annularly arranged mounting openings are provided on the outer surface of the mounting plate.

[0009] In a further embodiment, the outer surface of the mounting plate is provided with a plurality of annularly arranged mounting openings, the inner wall of each mounting opening is provided with a set of threaded grooves, and the interior of each mounting opening is provided with a hobbing cutter assembly.

[0010] In a further embodiment, each of the hobbing cutter assemblies includes a set of mounting plates, and a bearing is fixedly embedded on one side of each set of mounting plates that is close to each other. The inner ring of each set of bearings is fixedly mounted with a hobbing cutter body.

[0011] In a further embodiment, each of the hobbing cutter assemblies includes a set of bolts, each of the mounting plates has an assembly hole on its outer surface, one end of each bolt passes through the assembly hole and extends into the interior of the threaded groove, and each bolt is threadedly connected to the threaded groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device installs a set of connecting blocks on the outer surface of each cutter, and each set of connecting blocks is slidably connected to a groove on the outer surface of the cutter head. This allows the cutter to move smoothly when each set of connecting blocks moves. By installing two hydraulic cylinders on the outer surface of the mounting plate and fixing the output ends of the two hydraulic cylinders to the outer surface of the mounting plate, the position of the mounting plate can be adjusted by controlling the two hydraulic cylinders. By fixing the outer surface of the mounting plate to one end of each set of connecting blocks, the position of the connecting blocks and the cutter can be adjusted when the mounting plate moves, thus facilitating the adjustment of the cutting depth. Attached Figure Description

[0014] Figure 1 This is a front view of a shield cutting tool with adjustable cutting depth.

[0015] Figure 2 This is a side view of a shield cutting tool with adjustable cutting depth.

[0016] Figure 3 This is a side sectional view of the mounting plate in a shield cutterhead with adjustable cutting depth.

[0017] Figure 4 This is a top sectional view of a shield cutting tool with adjustable cutting depth.

[0018] In the diagram: 1. Cutter head; 2. Hob assembly; 201. Assembly hole; 202. Bearing; 203. Bolt; 204. Mounting plate; 205. Hob body; 3. Hydraulic cylinder; 4. Shaft; 5. Mounting plate; 6. Support column; 7. Mounting port; 8. Connecting block; 9. Connecting plate; 10. Slide groove; 11. Cutting blade; 12. Threaded groove; 13. Strip opening. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] 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.

[0022] Please see Figure 1-4In this utility model, an adjustable cutting depth shield cutter includes a cutter head 1 and a mounting plate 5. The outer surface of the cutter head 1 has several annularly arranged strip-shaped openings 13. The inner wall of each strip-shaped opening 13 has a set of sliding grooves 10. A cutter 11 is slidably connected to the inner wall of each strip-shaped opening 13. A set of connecting blocks 8 is fixedly installed on the outer surface of each cutter 11. Each connecting block 8 is slidably connected to the sliding groove 10. Two hydraulic cylinders 3 are fixedly installed on the outer surface of the mounting plate 5. The output ends of the two hydraulic cylinders 3 are jointly fixedly installed on the connecting plate 9. One end of each set of connecting blocks 8 is fixedly installed on the outer surface of the connecting plate 9. The mounting plate 5 fixes the two hydraulic cylinders 3. Both hydraulic cylinders 3 can be controlled by the control panel of the shield machine. The output ends of the two hydraulic cylinders 3 can jointly drive the connecting plate 9 to move. When the connecting plate 9 moves, it can drive multiple sets of connecting blocks 8 to slide in the sliding grooves 10, thereby facilitating the simultaneous adjustment of the position of multiple cutters 11.

[0023] Several ring-shaped support columns 6 are fixedly installed on the outer surface of the mounting plate 5. One end of each support column 6 is fixedly installed on the outer surface of the cutterhead 1. A rotating shaft 4 is fixedly installed on the outer surface of the cutterhead 1. Several ring-shaped mounting openings 7 are opened on the outer surface of the mounting plate 5. A set of threaded grooves 12 are opened on the inner wall of each mounting opening 7. A roller cutter assembly 2 is installed inside each mounting opening 7. The multiple ring-shaped support columns 6 together connect the cutterhead 1 and the mounting plate 5. One end of the rotating shaft 4 is connected to the drive mechanism of the tunnel boring machine. The drive mechanism can drive the cutterhead 1 to rotate through the rotating shaft 4. By opening several ring-shaped mounting openings 7 on the outer surface of the mounting plate 5 and setting roller cutter assemblies 2 inside each mounting opening 7, rock breaking operations can be easily carried out on the rock layer through multiple roller cutter assemblies 2.

[0024] Each hob assembly 2 includes a set of mounting plates 204. A bearing 202 is fixedly embedded on one side of each set of mounting plates 204 that is close to each other. A hob body 205 is fixedly mounted on the inner ring of each set of bearings 202. Each hob assembly 2 includes a set of bolts 203. Each mounting plate 204 has an assembly hole 201 on its outer surface. One end of each bolt 203 passes through the assembly hole 201 and extends into the inside of the threaded groove 12. Each bolt 203 is threadedly connected to the threaded groove 12. Each set of bearings 202 serves to fix the hob body 205. By using bolts 203 to pass through the assembly hole 201 and threadedly connect to the threaded groove 12, the hob assembly 2 can be easily installed inside the mounting opening 7. When the hob body 205 is damaged, the operator can quickly replace the hob assembly 2 by removing the bolts 203.

[0025] The working principle of this utility model is as follows:

[0026] When it is necessary to adjust the cutting depth, the operator first controls the output ends of the two hydraulic cylinders 3 to extend and retract synchronously through the control panel of the tunnel boring machine. The synchronous extension and retraction of the output ends of the two hydraulic cylinders 3 can jointly drive the connecting plate 9 to move. The movement of the connecting plate 9 can drive multiple sets of connecting blocks 8 to slide in multiple sets of sliding grooves 10. The movement of each set of connecting blocks 8 can drive the cutter 11 to adjust its position. When each cutter 11 has moved to the appropriate position, the operator can control the output ends of the two hydraulic cylinders 3 to stop extending and retracting through the control panel of the tunnel boring machine.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A shield cutting tool with adjustable cutting depth, characterized in that: The device includes a cutter head (1) and a mounting plate (5). The outer surface of the cutter head (1) is provided with a number of annularly arranged strip-shaped openings (13). Each strip-shaped opening (13) has a set of sliding grooves (10) on its inner wall. Each strip-shaped opening (13) has a cutter (11) slidably connected to its inner wall. Each cutter (11) has a set of connecting blocks (8) fixedly installed on its outer surface. Each connecting block (8) is slidably connected to the sliding groove (10). The outer surface of the mounting plate (5) is fixedly installed with two hydraulic cylinders (3). The output ends of the two hydraulic cylinders (3) are fixedly installed with a connecting plate (9). One end of each set of connecting blocks (8) is fixedly installed with the outer surface of the connecting plate (9).

2. The shield cutting tool with adjustable cutting depth according to claim 1, characterized in that: The outer surface of the mounting plate (5) is fixedly mounted with a number of ring-shaped support columns (6), and one end of each support column (6) is fixedly mounted to the outer surface of the cutter head (1).

3. The shield cutting tool with adjustable cutting depth according to claim 1, characterized in that: A rotating shaft (4) is fixedly installed on the outer surface of the cutter head (1), and a number of mounting holes (7) arranged in a ring are opened on the outer surface of the mounting plate (5).

4. The shield cutting tool with adjustable cutting depth according to claim 3, characterized in that: Each of the mounting ports (7) has a set of threaded grooves (12) on its inner wall, and each of the mounting ports (7) has a hobbing cutter assembly (2) inside.

5. A shield cutting tool with adjustable cutting depth according to claim 4, characterized in that: Each of the hobbing cutter assemblies (2) includes a set of mounting plates (204), and a bearing (202) is fixedly embedded on one side of each set of mounting plates (204) that is close to each other. The inner ring of each set of bearings (202) is fixedly mounted with a hobbing cutter body (205).

6. A shield cutting tool with adjustable cutting depth according to claim 5, characterized in that: Each of the hobbing cutter assemblies (2) includes a set of bolts (203), and each of the mounting plates (204) has an assembly hole (201) on its outer surface. One end of each bolt (203) passes through the assembly hole (201) and extends into the interior of the threaded groove (12). Each bolt (203) is threadedly connected to the threaded groove (12).

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