High-strength split structure device of high-efficiency shield machine cutter

Abstract

The utility model belongs to the field of shield machine, concretely relates to a high strength split type structure device of high -efficient shield machine cutter, has solved the current shield machine cutter and cutter head more integral structure, and the cutter is worn severely when hard rock, composite stratum excavation, needs frequently to change, but the integral structure will lead to the operation of troublesome when dismounting, does not reach the structure of split dismounting replacement, the problem of influence construction efficiency, including cutter head, one side of cutter head is equipped with connecting disc, one side of connecting disc is provided with the annular arrangement's inner cutter, one side of connecting disc is provided with the annular arrangement's outer cutter, one side of cutter head is equipped with two fixed slots. By loosening the fixed screw and locking nut, the connecting disc and the cutter can be removed as a whole, which saves the tedious process of disassembling the peripheral components of the cutter, eliminates the need to disassemble the cutter body, avoids secondary damage to the cutter caused by forced disassembly, and prolongs the service life of the cutter.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machines, specifically a high-strength split-type structure device for high-efficiency tunnel boring machine cutterheads. Background Technology

[0002] A tunnel boring machine (TBM) is a large-scale mechanized construction equipment used in underground tunnel engineering. It is widely used in the construction of underground projects such as subways, railways, highways, and municipal pipelines. Its core function is to safely and efficiently excavate tunnels underground, while simultaneously completing a series of operations such as segment assembly and lining support, which greatly reduces the risks and costs of traditional manual excavation.

[0003] Currently, the cutterhead and cutterhead of tunnel boring machines are mostly integrated structures. However, the cutterhead wears out rapidly when tunneling in hard rock and complex strata, requiring frequent replacement. The integrated structure makes disassembly cumbersome and does not achieve the desired split-disassembly and replacement, thus affecting construction efficiency. To address this issue, we propose a high-strength split-structure device for the cutterhead of tunnel boring machines. Utility Model Content

[0004] The technical problem solved by this utility model is that the cutter head and cutter disc of shield tunneling machines are mostly integrated structures. However, the cutter head wears out severely when tunneling in hard rock and complex strata and needs to be replaced frequently. The integrated structure will make disassembly and replacement difficult and will not achieve the desired split disassembly and replacement structure, thus affecting construction efficiency. This utility model provides a high-strength split structure device for the cutter head of shield tunneling machines.

[0005] To solve the above-mentioned technical problems, this utility model provides a high-strength split-type structure device for high-efficiency shield tunneling machine cutters, including a cutterhead. A connecting plate is provided on one side of the cutterhead. An inner cutterhead arranged in a ring is provided on one side of the connecting plate. An outer cutterhead arranged in a ring is provided on one side of the connecting plate. Two fixing grooves are opened on one side of the cutterhead. Fixing blocks are fixedly connected to one side of the connecting plate. One end of each of the two fixing blocks extends into the interior of the two fixing grooves. Threaded grooves are opened on one side of each of the two fixing grooves. Threaded holes are opened on the inner walls of each of the two threaded holes. Fixing screws are threadedly connected to the inner walls of each of the two threaded holes.

[0006] Preferably, the ends of the two fixing screws that are close to each other extend into the interior of the two threaded holes, and the outer surfaces of the two fixing screws are threadedly connected to the inner walls of the two threaded holes.

[0007] Preferably, one side of the cutter head is provided with two sets of positioning protrusions, and one side of the connecting plate is provided with two sets of positioning openings. One end of each of the two sets of positioning protrusions extends into the interior of the two positioning openings. One side of each of the two sets of positioning protrusions is fixedly connected with a locking screw. The outer surface of each of the two sets of locking screws is threaded with a locking nut. The ends of the two sets of locking nuts that are close to each other are in close contact with one side of the connecting plate.

[0008] Preferably, a hexagonal positioning groove is provided on one side of the cutter head, and a hexagonal positioning block is fixedly connected to one side of the connecting plate, with one end of the hexagonal positioning block extending into the interior of the two hexagonal positioning grooves.

[0009] Preferably, an annular connecting cover is fixedly connected to one side of the cutter head, an annular disk is fixedly connected to one side of the annular connecting cover, and a plurality of connecting holes are provided on one side of the annular disk.

[0010] Compared with related technologies, this utility model has the following beneficial effects:

[0011] This invention enables rapid positioning of the connecting disc and cutter head through the interlocking of the fixing block and the fixing groove, as well as the cooperation of the hexagonal positioning block and the hexagonal positioning groove, avoiding the problem of positioning deviation during installation. The cooperation of fixing screws, locking screws and locking nuts greatly improves the connection strength, ensuring the rigidity and stability of the inner and outer cutters during rotary tunneling. In addition, the connecting disc and cutters can be removed as a whole by simply loosening the fixing screws and locking nuts, eliminating the tedious process of disassembling the peripheral components of the cutter head. It does not require disassembling the cutter head body, avoiding secondary damage to the cutter head caused by forced disassembly, and extending the service life of the cutter head.

[0012] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front;

[0015] Figure 2 This is a frontal sectional view of the present invention;

[0016] Figure 3This is a top sectional view of the present invention;

[0017] Figure 4 This is a schematic diagram showing the disassembled structure of the cutter head and connecting disc of this utility model.

[0018] Numbering on the map:

[0019] 1. Cutter head; 2. Connecting disc; 3. Inner hob; 4. Outer hob; 5. Fixing groove; 6. Fixing block; 7. Connecting hole; 8. Threaded groove; 9. Threaded hole; 10. Annular connecting cover; 11. Fixing screw; 12. Hexagonal positioning groove; 13. Hexagonal positioning block; 14. Positioning port; 15. Positioning protrusion; 16. Locking screw; 17. Locking nut; 18. Annular disc. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 A high-strength, split-type structure device for the cutterhead of a high-efficiency tunnel boring machine includes a cutterhead 1, a connecting plate 2 on one side of the cutterhead 1, inner cutterheads 3 arranged in a ring on one side of the connecting plate 2, outer cutterheads 4 arranged in a ring on one side of the connecting plate 2, two fixing grooves 5 on one side of the cutterhead 1, and fixing blocks 6 fixedly connected to one side of the connecting plate 2. One end of each fixing block 6 extends into the interior of the two fixing grooves 5. Threaded grooves 8 are provided on one side of each fixing block 6, and threaded holes 9 are provided on the inner walls of each fixing groove 5. Fixing screws 11 are threadedly connected to the inner walls of each threaded hole 9. The inner cutterheads 3 and outer cutterheads 4 are arranged in a ring, which can cover the tunneling face with different radii and work together to improve the crushing efficiency. In addition, when the inner cutterheads 3 or outer cutterheads 4 are worn, they can be replaced individually or as a whole with the connecting plate 2 without disassembling the cutterhead 1 body, greatly reducing the difficulty of replacement and ensuring the continuity of construction.

[0022] Preferably, the ends of the two fixing screws 11 that are close to each other extend into the interior of the two threaded holes 9, and the outer surfaces of the two fixing screws 11 are threadedly connected to the inner walls of the two threaded holes 9. Two sets of positioning protrusions 15 are provided on one side of the cutter disc 1, and two sets of positioning ports 14 are provided on one side of the connecting disc 2. One end of the two sets of positioning protrusions 15 extends into the interior of the two positioning ports 14, and a locking screw 16 is fixedly connected to one side of each set of positioning protrusions 15. A locking nut 17 is threadedly connected to the outer surface of each set of locking screws 16. The ends of the two sets of locking nuts 17 that are close to each other are in close contact with one side of the connecting disc 2. They extend into the fixing groove 5 through the fixing block 6, and cooperate with the threaded groove 8, threaded hole 9 and fixing screw 11 to achieve initial fastening. By inserting the positioning protrusions 15 into the interior of the positioning ports 14, and then locking them with the locking screws 16 and locking nuts 17, relative displacement can be prevented.

[0023] Preferably, a hexagonal positioning groove 12 is provided on one side of the cutterhead 1, and a hexagonal positioning block 13 is fixedly connected to one side of the connecting plate 2. One end of the hexagonal positioning block 13 extends into the interior of the two hexagonal positioning grooves 12. An annular connecting cover 10 is fixedly connected to one side of the cutterhead 1, and an annular disk 18 is fixedly connected to one side of the annular connecting cover 10. A plurality of connecting holes 7 are provided on one side of the annular disk 18. By embedding the hexagonal positioning block 13 into the interior of the hexagonal positioning groove 12, circumferential rotation can be restricted, ensuring the stability of the connecting plate 2 during operation. In addition, the annular connecting cover 10 and the annular disk 18 can be connected to other drive or support components of the tunnel boring machine through the connecting holes 7, ensuring the stable cooperation of the entire device with the main machine and providing power transmission support for the cutterhead operation.

[0024] The specific implementation process of this utility model is as follows: In use, the initial positioning of the connecting disc 2 and the cutter head 1 can be achieved by the engagement of the fixing block 6 and the fixing groove 5. At the same time, the hexagonal positioning block 13 is inserted into the hexagonal positioning groove 12 to restrict the relative rotation of the two. Then, the fixing screw 11 is turned so that it passes through the threaded hole 9 of the cutter head 1 and is screwed into the threaded groove 8 of the fixing block 6. Then, the locking screw 16 and the locking nut 17 can be used to fasten the positioning protrusion 15, which can form a multiple fixing structure to ensure the stability of the connecting disc 2, the inner cutter head 3 and the outer cutter head 4 during high-speed rotating tunneling.

[0025] During the tunneling process, the inner roller cutter 3 and the outer roller cutter 4 work together to break the strata. When the roller cutters are worn and need to be replaced, simply loosen the fixing screws 11 and the locking nuts 17 to remove the connecting plate 2 along with the roller cutter from the cutter head 1. There is no need to disassemble the cutter head 1 body. After replacing the new connecting plate 2 or replacing the worn inner roller cutter 3 and outer roller cutter 4 separately, the original positioning structure can be quickly reset, and the connection can be tightened again to resume operation.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model. 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 high-strength split structure device of a high-performance tunneling machine cutter, comprising a cutter head (1), characterized in that: The cutter head (1) has a connecting plate (2) on one side. The connecting plate (2) has an inner hob (3) arranged in a ring on one side and an outer hob (4) arranged in a ring on one side. The cutter head (1) has two fixing grooves (5) on one side. The connecting plate (2) has a fixing block (6) fixedly connected to one side. One end of the two fixing blocks (6) extends into the interior of the two fixing grooves (5). The two fixing blocks (6) have threaded grooves (8) on one side. The inner walls of the two fixing grooves (5) have threaded holes (9). The inner walls of the two threaded holes (9) are threaded with fixing screws (11).

2. The high-strength split structure device of a high-performance tunnel machine's cutter according to claim 1, characterized in that: The two fixing screws (11) extend into the interior of the two threaded holes (9) at their close ends, and the outer surfaces of the two fixing screws (11) are threadedly connected to the inner walls of the two threaded holes (9).

3. The high-strength split structure device of a high-performance tunnel machine's cutter according to claim 1, characterized in that: The cutter head (1) has two sets of positioning protrusions (15) on one side, and the connecting disc (2) has two sets of positioning ports (14) on one side. One end of each of the two sets of positioning protrusions (15) extends into the interior of the two positioning ports (14).

4. The high-strength split structure device of a high-performance tunnel machine's cutter according to claim 3, characterized in that: Both sets of positioning protrusions (15) are fixedly connected to one side of a locking screw (16), and the outer surfaces of both sets of locking screws (16) are threaded with locking nuts (17). The ends of the two sets of locking nuts (17) that are close to each other are in close contact with one side of the connecting plate (2).

5. The high-strength split structure device of a high-performance tunnel machine's cutter according to claim 1, characterized in that: The cutter head (1) has a hexagonal positioning groove (12) on one side, and a hexagonal positioning block (13) is fixedly connected to one side of the connecting plate (2). One end of the hexagonal positioning block (13) extends into the interior of the two hexagonal positioning grooves (12).

6. The high-strength split structure device of a high-performance tunnel machine's cutter according to claim 1, characterized in that: An annular connecting cover (10) is fixedly connected to one side of the cutter head (1), and an annular disk (18) is fixedly connected to one side of the annular connecting cover (10). A plurality of connecting holes (7) are provided on one side of the annular disk (18).

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