Diameter limiting device for opening of shield tunneling machine cutterhead and shield tunneling machine cutterhead

Abstract

The utility model discloses a diameter limiting device for opening a cutter head of a shield tunneling machine, which comprises a middle stop lever, at least two mounting sleeves are movably sleeved on the middle stop lever, side stop levers are respectively hinged to two sides of the mounting sleeves, end stop levers are respectively hinged to two ends of the middle stop lever, and fixing seats are respectively hinged to one ends, far away from the middle stop lever, of the side stop levers and the end stop levers. The fixing base is used for being fixed to the side wall of an opening of the cutterhead. The utility model further discloses a shield tunneling machine cutterhead, the shield tunneling machine cutterhead comprises the diameter limiting device for the shield tunneling machine cutterhead opening, and the fixing bases are fixed to the corresponding side walls of the cutterhead opening respectively, so that the cutterhead opening is divided into a plurality of small openings. The diameter limiting device for the shield tunneling machine cutterhead opening and the shield tunneling machine cutterhead are good in firmness, long in service life, not prone to damage, good in blocking effect and high in adaptability.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, specifically to a diameter limiting device for the opening of the cutterhead of a tunnel boring machine and the cutterhead of a tunnel boring machine. Background Technology

[0002] With the rapid development of urban subway projects, the construction of urban tunnels is increasing, and the application of shield tunneling is becoming more and more widespread. Currently, most subway tunnel construction adopts the shield tunneling method. In order to ensure the safety of surface buildings and structures, the tunnel burial depth is increasing, and the number of tunnels crossing hard rock strata is increasing. When the shield machine crosses the full-section hard rock strata, the TBM mode is selected for crossing.

[0003] The cutterhead opening of a tunnel boring machine (TBM) is typically limited by a diameter-limiting device to prevent large pieces of material from entering and causing jamming. For example, Chinese patent application number 202121444431.9 discloses a foldable cutterhead opening diameter-limiting device, located on the side of the cutterhead opening between the main beam and the secondary beam. This device includes multiple grating plates, foldably and symmetrically fixed to both sides of each secondary beam; and a limiting plate located below the grating plates, one end of which is detachably connected to the secondary beam. When the grating plates need to be opened, the other end of the limiting plate is fixedly connected to the bottom of the grating plates by bolt one; when the grating plates need to be closed, the limiting plate is removed, and the grating plates are fixedly connected to the side of the secondary beam by bolt two. Existing cutterhead opening diameter-limiting devices have the following shortcomings:

[0004] 1) Using a cantilever for diameter limiting is not secure, has a short service life, is easily damaged, and causes diameter limiting failure;

[0005] 2) Blocking is only done on one side of the cutter head opening, resulting in poor blocking effect;

[0006] 3) It cannot meet different diameter requirements and has poor adaptability. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a shield machine cutterhead opening limiting device and shield machine cutterhead with good sturdiness, long service life, not easy to be damaged, good blocking effect and strong adaptability.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A diameter limiting device for the cutterhead opening of a tunnel boring machine includes a central stop bar, on which at least two mounting sleeves are movably sleeved. Side stops are hinged to both sides of each mounting sleeve, and end stops are hinged to both ends of the central stop bar. A fixing seat is hinged to the end of each side stop bar and end stop bar away from the central stop bar. The fixing seat is used to fix the device to the side wall of the cutterhead opening.

[0010] As a further improvement to the above technical solution:

[0011] The mounting sleeve is equipped with a locking element for locking the mounting sleeve and the middle stop bar.

[0012] The locking component is a locking screw.

[0013] The middle stop is provided with hinge seats at both ends, and the end stop is hinged to the hinge seats.

[0014] At least one of the hinged seats is detachably connected to the central stop.

[0015] The hinge seat is provided with a stud, and the end of the middle stop bar is provided with a threaded hole, and the stud is threadedly connected to the threaded hole.

[0016] The mounting base is equipped with a fixing element for fixing the mounting base to the side wall of the cutter head opening.

[0017] The fastener is a fixing screw.

[0018] A tunnel boring machine cutterhead includes the aforementioned cutterhead opening diameter limiting device, wherein each of the aforementioned fixing seats is fixed on the corresponding side wall of the cutterhead opening, thereby dividing the cutterhead opening into multiple small openings.

[0019] As a further improvement to the above technical solution:

[0020] The central stop bar protrudes outward from the cutter head opening.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] This utility model discloses a diameter limiting device for the cutterhead opening of a tunnel boring machine. The process of use is as follows: Each fixing seat is fixed to the corresponding side wall of the cutterhead opening. For example, the fixing seats on the side stops of the mounting sleeve are fixed to the left and right side walls of the cutterhead opening, respectively, and the fixing seats on the end stops of the middle stop are fixed to the upper and lower side walls of the cutterhead opening, respectively, thus dividing the cutterhead opening into multiple small openings. Because the cutterhead opening is divided into multiple small openings, the entry of large-diameter materials is restricted. This diameter limiting device for the cutterhead opening of a tunnel boring machine has three advantages: First, it limits the diameter relative to the cantilever design, ensuring good stability, long service life, and resistance to damage; second, it blocks one side of the cutterhead opening, providing a better blocking effect; third, the mounting sleeve is movably fitted onto the middle stop, allowing for selective addition or removal as needed to meet different diameter limiting requirements, thus demonstrating strong adaptability.

[0023] The present invention relates to a shield tunneling machine cutterhead, including a diameter limiting device for the opening of the shield tunneling machine cutterhead, which has all the advantages of a diameter limiting device for the opening of the shield tunneling machine cutterhead. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the main structure of the shield machine cutterhead opening limiting device and the shield machine cutterhead.

[0025] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0026] Figure 3 This is a cross-sectional view of the shield machine cutterhead opening limiting device and the shield machine cutterhead of this utility model.

[0027] The labels in the diagram represent:

[0028] 1. Middle stop bar; 11. Threaded hole; 2. Mounting sleeve; 3. Side stop bar; 4. End stop bar; 5. Fixing seat; 6. Cutter head opening; 7. Locking element; 8. Hinge seat; 81. Stud; 9. Fixing element. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Example 1:

[0034] Figures 1 to 3 This invention illustrates an embodiment of a diameter limiting device for the cutterhead opening of a tunnel boring machine. The diameter limiting device for the cutterhead opening of this embodiment includes a central stop 1, on which at least two mounting sleeves 2 are movably sleeved. Side stops 3 are respectively hinged to both sides of the mounting sleeves 2, and end stops 4 are respectively hinged to both ends of the central stop 1. A fixing seat 5 is hinged to the end of the side stops 3 and the end stops 4 away from the central stop 1. The fixing seat 5 is used to fix it to the side wall of the cutterhead opening 6.

[0035] Usage: Fix each fixing seat 5 to the corresponding side wall of the cutter head opening 6, such as fixing the fixing seats 5 on the side stops 3 on both sides of the mounting sleeve 2 to the left and right sides of the cutter head opening 6 respectively (e.g.) Figure 1 As shown), on the side wall, the fixing seats 5 on the end stops 4 at both ends of the middle stop 1 are respectively fixed to the upper and lower sides of the cutter head opening 6 (as shown). Figure 1 As shown, the cutterhead opening 6 is divided into multiple smaller openings on the side wall (the smaller openings are smaller than the cutterhead opening 6). Because the cutterhead opening 6 is divided into multiple smaller openings, the entry of large-diameter materials is restricted. The diameter limiting device used in the cutterhead opening of this tunnel boring machine has three advantages: first, compared to the cantilever type, it offers better stability, longer service life, and is less prone to damage; second, compared to blocking only one side of the cutterhead opening 6, it provides a better blocking effect; third, the mounting sleeve 2 is movably fitted onto the central stop bar 1, and can be selectively added or removed according to actual needs to meet different diameter limiting requirements, demonstrating strong adaptability.

[0036] Both the side stop bar 3 and the end stop bar 4 are hinged to the middle stop bar 1, which facilitates unfolding and installation.

[0037] Furthermore, in this embodiment, the mounting sleeve 2 is provided with a locking member 7 for locking the mounting sleeve 2 and the central stop bar 1. In use, the mounting sleeve 2 is locked to the central stop bar 1 by the locking member 7 to prevent shaking and improve the stability of the overall structure.

[0038] Furthermore, such as Figure 2 As shown, in this embodiment, the locking component 7 is a locking screw. The structure is simple and the operation is convenient.

[0039] Furthermore, in this embodiment, the two ends of the middle stop bar 1 are respectively provided with hinge seats 8, and the end stop bar 4 is hinged to the hinge seats 8.

[0040] Furthermore, in this embodiment, at least one hinge seat 8 is detachably connected to the central stop bar 1. This allows the hinge seat 8 to be removed, increasing or decreasing the number of mounting sleeves 2.

[0041] Furthermore, such as Figure 2 As shown, in this embodiment, the hinge seat 8 is provided with a stud 81, and the end of the middle stop 1 is provided with a threaded hole 11. The stud 81 is threadedly connected to the threaded hole 11. The structure is simple and the processing operation is convenient.

[0042] Furthermore, in this embodiment, the fixing seat 5 is provided with a fixing member 9, which is used to fix the fixing seat 5 to the side wall of the cutter head opening 6.

[0043] Furthermore, in this embodiment, the fixing member 9 is a fixing screw. The fixing base 5 is fixed to the side wall of the cutter head opening 6 by the fixing screw, which is simple in structure and easy to assemble and disassemble.

[0044] Example 2:

[0045] Figures 1 to 3 An embodiment of the shield tunneling machine cutterhead of this utility model is also shown. The shield tunneling machine cutterhead of this embodiment includes the diameter limiting device for the cutterhead opening of the first embodiment. Each fixing seat 5 is fixed on the corresponding side wall of the cutterhead opening 6, so that the cutterhead opening 6 is divided into multiple small openings.

[0046] This tunnel boring machine cutterhead includes the cutterhead opening diameter limiting device of Embodiment 1, and has all the advantages of the cutterhead opening diameter limiting device.

[0047] Furthermore, in this embodiment, the central stop rod 1 protrudes outward toward the cutter head opening 6. The central stop rod 1 protrudes outward toward the cutter head opening 6, making the diameter limiting device as a whole form a structure with the central part protruding outward relative to the surrounding area (the side stop rods 3 and end stop rods 4 are inclined). The inclined side stop rods 3 and end stop rods 4 have a guiding effect on the movement of materials, preventing large pieces of material from being stuck at the cutter head opening 6.

[0048] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A diameter limiting device for the cutterhead opening of a tunnel boring machine, characterized in that: Includes a central stop bar (1), on which at least two mounting sleeves (2) are movably sleeved. Side stops (3) are respectively hinged to both sides of the mounting sleeves (2), and end stops (4) are respectively hinged to both ends of the central stop bar (1). A fixing seat (5) is hinged to the end of the side stops (3) and end stops (4) away from the central stop bar (1). The fixing seat (5) is used to fix it to the side wall of the cutter head opening (6).

2. The diameter limiting device for the cutterhead opening of a tunnel boring machine according to claim 1, characterized in that: The mounting sleeve (2) is provided with a locking element (7) for locking the mounting sleeve (2) and the middle stop bar (1).

3. The diameter limiting device for the cutterhead opening of a tunnel boring machine according to claim 2, characterized in that: The locking component (7) is a locking screw.

4. The diameter limiting device for the cutterhead opening of a tunnel boring machine according to claim 1, characterized in that: The middle stop (1) is provided with hinge seats (8) at both ends, and the end stop (4) is hinged to the hinge seats (8).

5. The diameter limiting device for the cutterhead opening of a tunnel boring machine according to claim 4, characterized in that: At least one of the hinged seats (8) is detachably connected to the central stop (1).

6. The diameter limiting device for the cutterhead opening of a tunnel boring machine according to claim 5, characterized in that: The hinge seat (8) is provided with a stud (81), and the end of the middle stop bar (1) is provided with a threaded hole (11). The stud (81) is threadedly connected to the threaded hole (11).

7. The diameter limiting device for the cutterhead opening of a tunnel boring machine according to any one of claims 1 to 6, characterized in that: The fixing seat (5) is provided with a fixing member (9) for fixing the fixing seat (5) to the side wall of the cutter head opening (6).

8. The diameter limiting device for the cutterhead opening of a tunnel boring machine according to claim 7, characterized in that: The fastener (9) is a fixing screw.

9. A tunnel boring machine cutterhead, characterized in that: The shield machine cutterhead opening diameter limiting device includes any one of claims 1 to 8, wherein each of the fixed seats (5) is fixed on the corresponding side wall of the cutterhead opening (6) to divide the cutterhead opening (6) into a plurality of small openings.

10. The tunnel boring machine cutterhead according to claim 9, characterized in that: The central stop bar (1) protrudes outward from the cutter head opening (6).

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