Tunneling cutter head with tunneling curve fitting adjustment function

Abstract

The utility model relates to a tunneling cutterhead for fitting adjustment of a tunneling curve, which comprises a cutterhead main body, a cutter head main body, a cutter head main body, a cutter head main body and a cutter head main body, and is characterized in that the cutter head main body comprises a convex curved-surface-shaped tunneling surface; the central cutterhead assembly is mounted at the central part of the cutterhead main body; and the tunneling cutter assemblies are mounted on the cutter head main body, and the tunneling cutter assemblies are distributed at intervals in the bending direction of the tunneling face. And the telescopic mechanism drives at least part of the central cutter head assembly and / or the tunneling cutter assembly to telescopically adjust the height protruding out of the tunneling face. The tunneling cutter assemblies are distributed in the curved surface direction of the tunneling face, and by adjusting the protruding height of the center cutter disc assembly and / or the tunneling cutter assemblies, the center cutter disc assembly can grab the tunneling portion of the tunneling main tunnel segment. The telescopic mechanism controls the center cutter head assembly and / or the tunneling cutter assembly to be adjusted in a telescopic mode, so that tunneling curve fitting of the tunneling cutter head can be adaptively adjusted, and the tunneling efficiency is improved, especially in a main tunnel segment which breaks a positive arc or a reverse arc.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a tunneling cutterhead for adjusting the tunneling curve fitting. Background Technology

[0002] Tunneling equipment excavates through underground soil, thereby forming tunnels, shafts, or other underground passages along its excavation path. The tunneling equipment is equipped with a cutterhead, in which tearing cutters, rolling cutters, and shell cutters are fixed at the excavation face. For example, the public document with announcement number CN220890193U provides a retractable center cutterhead for a tunnel boring machine.

[0003] When the tunneling cutterhead breaks through the pipe wall of the main tunnel, it uses a central cutter for positioning, gripping, and excavation to facilitate the excavation of the side tunnel. However, the main tunnel wall is an arc-shaped curved surface. When the center of the side tunnel is eccentric relative to the main tunnel, the central cutter of the existing fixed tunneling cutterhead deviates from the pipe wall, causing a technical problem where the central cutter cannot accurately grip and break through the main tunnel. Therefore, improvements are needed. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides a tunneling cutterhead with tunneling curve fitting adjustment, which solves the technical problem that the fixed setting of the cutter head makes it difficult to accurately grasp and break through the main tunnel.

[0005] According to a first aspect of the present invention, a tunneling cutterhead for adjusting tunneling curve fitting is provided, the cutterhead comprising:

[0006] The cutterhead body includes a convex curved excavation face;

[0007] A central cutter head assembly is installed at the center of the cutter head body;

[0008] Several tunneling cutter assemblies are installed on the cutterhead body, and the tunneling cutter assemblies are spaced apart along the curvature direction of the tunneling face;

[0009] A telescopic mechanism drives at least a portion of the central cutterhead assembly and / or the tunneling cutter assembly to extend and retract, adjusting the height of the protrusions from the tunneling face.

[0010] In one embodiment, the central cutter head assembly includes a central cutter box and a plurality of central cutters mounted on the central cutter box, and the telescopic mechanism includes at least one central telescopic member, which connects the central cutter box and / or the central cutters.

[0011] In one embodiment, the central tool box and the tool disc body are fixedly connected, at least a portion of the central tools are slidably connected to the central tool box, and each central telescopic member is connected to at least one central tool.

[0012] In one embodiment, the tunneling cutter assembly includes a movable cutter box that slides on the cutterhead body and a tunneling cutter body installed on the movable cutter box. The telescopic mechanism includes a cutter box telescopic member installed on the cutterhead body, and the cutter box telescopic member is connected to the movable cutter box.

[0013] In one embodiment, the tunneling cutter body includes one or more of a roller cutter, a ripping cutter, and a breaking cutter.

[0014] In one embodiment, the centerline of the tunneling cutter assembly is arranged parallel to the rotation centerline of the tunneling cutterhead, and two adjacent tunneling cutter assemblies are arranged parallel to each other.

[0015] In one embodiment, the tips of the plurality of tunneling cutter assemblies are arranged in a stepped manner along the radial direction of the tunneling cutterhead.

[0016] In one embodiment, the centerline of the tunneling cutter assembly is inclined relative to the rotation centerline of the tunneling cutterhead, and two adjacent tunneling cutter assemblies are arranged in parallel.

[0017] In one embodiment, the tips of the plurality of said tunneling cutter assemblies are aligned on the same arc.

[0018] In one embodiment, the cutterhead further includes a lateral tearing cutter, and the telescopic mechanism includes an inclined telescopic member. The inclined telescopic member connects the lateral tearing cutter to the tilting telescopic movement relative to the rotation centerline of the cutterhead, and the maximum rotation radius of the lateral tearing cutter is greater than the maximum rotation radius of the cutterhead body.

[0019] The technical solution provided by the embodiments of this utility model can include the following beneficial effects: the cutting tool assembly is distributed along the curved surface direction of the tunneling face, with the central cutterhead assembly at the foremost position. By adjusting the protrusion height of the central cutterhead assembly and / or the cutting tool assembly, the central cutterhead assembly can grip the tunneling section of the main tunnel segment, improving the accuracy of tunneling. The telescopic mechanism controls the telescopic adjustment of the central cutterhead assembly and / or the cutting tool assembly, thereby adaptively adjusting the tunneling curve fitting of the cutting tool head, improving tunneling efficiency, especially when breaking through main tunnel segments with positive or negative arcs. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0021] Figure 1 This is a schematic diagram illustrating the structure of a stepped tunneling cutterhead according to one embodiment.

[0022] Figure 2 yes Figure 1Enlarged diagram of point A in the middle.

[0023] Figure 3 yes Figure 1 An enlarged schematic diagram showing the adaptive protrusion of the central blade at point A.

[0024] Figure 4 yes Figure 1 Enlarged diagram of point B in the middle.

[0025] Figure 5 This is a schematic diagram of the structure of an arc-shaped tunneling cutterhead according to one embodiment.

[0026] Figure 6 This is a three-dimensional schematic diagram of an arc-shaped tunneling cutterhead according to one embodiment.

[0027] In the figure, the cutterhead body is 10; the tunneling face is 11; the telescopic mechanism is 20; the central telescopic component is 21; the cutter box telescopic component is 22; the inclined telescopic component is 23; the tunneling cutter assembly is 30; the movable cutter box is 31; the tunneling cutter body is 32; the central cutterhead assembly is 40; the central cutter box is 41; the central cutter is 42; and the lateral tearing cutter is 50. Detailed Implementation

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] like Figures 1 to 6 As shown, this utility model provides a tunneling cutterhead for adjusting the tunneling curve. The cutterhead includes a cutterhead body 10, a central cutterhead assembly 40 mounted on the cutterhead body 10, a plurality of tunneling cutter assemblies 30, and a telescopic mechanism 20. The central cutterhead assembly 40 is mounted in the central region of the cutterhead body 10, and the plurality of tunneling cutter assemblies 30 are distributed radially at intervals along the cutterhead body 10. The telescopic mechanism 20 is mounted on the back side of the cutterhead body 10 and is connected to the central cutterhead assembly 40 and / or the plurality of tunneling cutter assemblies 30.

[0030] The cutterhead body 10 includes a convex curved excavation face 11. The central cutterhead assembly 40 is located at a fixed point on the excavation face 11 and can first locate and grab the arc-shaped part of the tunnel segment. Several excavation cutter assemblies 30 are distributed at intervals along the curvature direction of the excavation face 11. For example, the excavation cutter body 32 includes one or more of the following: a roller cutter, a ripping cutter, and a breaking cutter.

[0031] The following is an example of a hobbing cutter.

[0032] The front of the excavation face 11 has a circular structure, and its axial cross-section is an arc curve. The cutterheads are distributed at intervals along the excavation face 11 from the central cutterhead assembly 40 towards the edge, and in the axial direction, the cutterheads have a stepped distribution structure. The excavation portion of each cutterhead extends beyond the excavation face 11, thereby achieving excavation.

[0033] The maximum height of the roller cutter is less than the height of the central cutterhead assembly by 40, in order to adapt to the excavation of the curved main tunnel segments.

[0034] The cutterhead body 10 is equipped with a telescopic mechanism 20, which drives at least part of the central cutterhead assembly 40 and / or the tunneling cutter assembly 30 to extend and retract to adjust the height of the protrusion from the tunneling face 11.

[0035] Optionally, the central cutterhead assembly 40 is fixedly connected to the cutterhead body 10, and at least a portion of the tunneling cutter assembly 30 is movably connected to the cutterhead body 10. In this case, the telescopic mechanism 20 drives at least a portion of the tunneling cutter assembly 30 to extend and retract to adjust the height of the protrusion from the tunneling face 11.

[0036] Optionally, the central cutterhead assembly 40 and the cutterhead body 10 are movably connected, and the tunneling cutter assembly 30 and the cutterhead body 10 are fixedly connected. In this case, the telescopic mechanism 20 drives at least part of the central cutterhead assembly 40 to telescopically adjust the height of the protrusion from the tunneling face 11.

[0037] Optionally, if the central cutterhead assembly 40 and the cutterhead body 10 are movably connected, and at least part of the tunneling cutter assembly 30 is movably connected to the cutterhead body 10, then the telescopic mechanism 20 drives the central cutterhead assembly 40 and at least part of the tunneling cutter assembly 30 to telescopically adjust the height of the protrusions from the tunneling face 11.

[0038] like Figures 1 to 4 As shown, the cutting tool assembly 30 is distributed along the curved surface of the excavation face 11, with the central cutterhead assembly 40 at the foremost position. By adjusting the protrusion height of the central cutterhead assembly 40 and / or the cutting tool assembly 30, the central cutterhead assembly 40 can grip the excavation section of the main tunnel segment, improving excavation accuracy. The telescopic mechanism 20 controls the telescopic adjustment of the central cutterhead assembly 40 and / or the cutting tool assembly 30, thereby adaptively adjusting the excavation curve fitting of the cutting tool head and improving excavation efficiency, especially when breaking through main tunnel segments with positive or negative arcs.

[0039] In one embodiment, the central cutter head assembly 40 includes a central cutter box 41 and a plurality of central cutters 42 mounted on the central cutter box 41, and the telescopic mechanism 20 includes at least one central telescopic member 21, which connects the central cutter box 41 and / or the central cutters 42.

[0040] Optionally, the central tool box 41 is movably connected to the cutter head body 10, and the central telescopic component 21 drives the central tool box 41 to slide along the cutter head body 10, thereby driving the entire central cutter head assembly 40 to telescopically move.

[0041] Optionally, the central tool box 41 and the cutter head body 10 are fixedly connected, at least some of the central cutters 42 are slidably connected to the central tool box 41, and each central telescopic member 21 is connected to at least one central cutter 42. The central tool box 41 is fixedly connected to the cutter head body 10, and multiple central cutters 42 are slidably connected to the central tool box 41. Optionally, all the central cutters 42 can slide relative to the central tool box 41; alternatively, some of the central cutters 42 slide relative to the central tool box 41, and some of the central cutters 42 are fixedly connected to the central tool box 41.

[0042] The central telescopic component 21 can be configured as one or more. When there is only one central telescopic component 21, it drives multiple central cutter heads 42 to move synchronously. Furthermore, when there are multiple central telescopic components 21, each central telescopic component 21 drives one or more central cutter heads 42 to move, which can realize the adjustment of the tunneling curve fitting of the central cutter head assembly 40. Even further, each central cutter head 42 is connected to a central telescopic component 21 to achieve personalized adjustment.

[0043] The tunneling cutter assembly 30 is mounted on the cutterhead body 10. Optionally, some tunneling cutter assemblies 30 are fixedly mounted on the cutterhead body 10, while the remaining tunneling cutter assemblies 30 are telescopically movably mounted on the cutterhead body 10. Optionally, all tunneling cutter assemblies 30 are telescopically movably mounted on the cutterhead body 10, so that all tunneling cutter assemblies 30 are telescopically adjustable.

[0044] The tunneling cutter assembly 30 includes a movable cutter box 31 that slides on the cutterhead body 10 and a tunneling cutter body 32 installed on the movable cutter box 31. The telescopic mechanism 20 includes a cutter box telescopic component 22 installed on the cutterhead body 10 and connected to the movable cutter box 31.

[0045] The tunneling cutter body 32 can be configured as a rolling cutter body, a tearing cutter body, a shell cutter body, etc. The tunneling cutter body 32 is installed on the movable cutter box 31. The telescopic component 22 of the cutter box drives the movable cutter box 31 to reciprocate through telescopic movement, thereby adjusting the linear reciprocating movement of the tunneling cutter body 32 connected to the corresponding movable cutter box 31.

[0046] For example, the roller cutter body extends and retracts relative to the cutterhead body 10 to coordinate with the extension and retraction of the central cutterhead assembly 40, thereby adjusting the tunneling curve fitting of the tunneling cutterhead. Meanwhile, the tearing cutter body and shell cutter body of other parts are fixed to the cutterhead body 10 to achieve a partially fixed tunneling structure.

[0047] As the cutterhead rotates, each cutter assembly 30 forms a circular tunneling area. Furthermore, the roller cutter body has a tubular or conical tunneling trajectory.

[0048] In one embodiment, the centerline of the cutting tool assembly 30 is arranged parallel to the rotation centerline of the cutting tool head, and adjacent cutting tool assemblies 30 are arranged parallel to each other. The protruding direction of the cutting tool assembly 30 is parallel to the rotation centerline, and correspondingly, the rotation trajectory of the cutting tool assembly 30 is a circular tubular trajectory.

[0049] Furthermore, along the radial direction of the cutterhead, the tops of multiple cutterhead assemblies 30 are arranged in a stepped manner. The cutterhead has an outwardly convex curved surface structure, and the tops of multiple cutterhead assemblies 30 extend beyond the tunneling face 11. The parallel cutterhead assemblies 30 form a stepped structure, achieving step-like progressive tunneling.

[0050] like Figures 2 to 5 As shown, in another embodiment, the centerline of the cutting tool assembly 30 is inclined relative to the rotation centerline of the cutting tool head, and two adjacent cutting tool assemblies 30 are arranged in parallel. The protruding direction of the cutting tool assembly 30 is inclined, and the rotation trajectory of the cutting tool assembly 30 is conical and intersects the rotation centerline. Accordingly, the rotation trajectory of the cutting tool assembly 30 is a conical trajectory.

[0051] Furthermore, the tops of multiple cutting tool assemblies 30 are aligned on the same arc, and the cutting tool assemblies 30 are inclined relative to the rotation centerline. Correspondingly, the cutterhead body 10 is provided with an inclined channel, and the cutting tool assemblies 30 slide along the inclined channel to adapt to different curvature structures.

[0052] Multiple tunneling cutter assemblies 30 protrude radially and are spaced apart along the tunneling face 11. The line connecting the ends of the multiple tunneling cutter assemblies 30 approximates an arc curve, thus forming an arc-shaped tunneling surface.

[0053] like Figures 1 to 4 As shown, in one embodiment, the tunneling cutterhead further includes a lateral tearing cutter 50, and the telescopic mechanism 20 includes an inclined telescopic member 23. The inclined telescopic member 23 is connected to the lateral tearing cutter 50 to tilt and telescopically move relative to the rotation center line of the tunneling cutterhead. The maximum rotation radius of the lateral tearing cutter 50 is greater than the maximum rotation radius of the cutterhead body 10.

[0054] The lateral tearing cutters 50 are distributed at the maximum outer diameter of the cutterhead, enabling them to excavate at the maximum edge of the cutterhead. The lateral tearing cutters 50 have an inclined structure, and the inclined telescopic member 23 drives the lateral tearing cutters 50 to extend and retract, thereby increasing the cutting range of the lateral tearing cutters 50.

[0055] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this invention.

Claims

1. A tunneling cutterhead for adjusting tunneling curve fitting, characterized in that, The tunneling cutterhead includes: The cutterhead body includes a convex curved excavation face; A central cutter head assembly is installed at the center of the cutter head body; Several tunneling cutter assemblies are installed on the cutterhead body, and the tunneling cutter assemblies are spaced apart along the curvature direction of the tunneling face; A telescopic mechanism drives at least a portion of the central cutterhead assembly and / or the tunneling cutter assembly to extend and retract, adjusting the height of the protrusions from the tunneling face.

2. The tunneling cutterhead according to claim 1, characterized in that, The central cutter head assembly includes a central cutter box and a plurality of central cutters mounted on the central cutter box. The telescopic mechanism includes at least one central telescopic member, which connects the central cutter box and / or the central cutters.

3. The tunneling cutterhead according to claim 2, characterized in that, The central tool box and the main body of the tool disc are fixedly connected, at least part of the central tool is slidably connected to the central tool box, and each central telescopic component is connected to at least one central tool.

4. The tunneling cutterhead according to claim 1, characterized in that, The tunneling cutter assembly includes a movable cutter box that slides on the cutterhead body and a tunneling cutter body installed on the movable cutter box. The telescopic mechanism includes a cutter box telescopic component installed on the cutterhead body, and the cutter box telescopic component is connected to the movable cutter box.

5. The tunneling cutterhead according to claim 4, characterized in that, The tunneling cutter body includes one or more of the following: a rolling cutter, a tearing cutter, and a breaking cutter.

6. The tunneling cutterhead according to any one of claims 1 to 5, characterized in that, The centerline of the tunneling cutter assembly is set parallel to the rotation centerline of the tunneling cutterhead, and two adjacent tunneling cutter assemblies are set parallel to each other.

7. The tunneling cutterhead according to claim 6, characterized in that, In the radial direction of the tunneling cutterhead, the tops of the plurality of tunneling cutter assemblies are distributed in a stepped manner.

8. The tunneling cutterhead according to any one of claims 1 to 5, characterized in that, The centerline of the tunneling cutter assembly is inclined relative to the rotation centerline of the tunneling cutterhead, and two adjacent tunneling cutter assemblies are arranged in parallel.

9. The tunneling cutterhead according to claim 8, characterized in that, The tips of the multiple tunneling cutter assemblies are aligned on the same arc.

10. The tunneling cutterhead according to claim 1, characterized in that, The tunneling cutterhead also includes a lateral tearing cutter, and the telescopic mechanism includes an inclined telescopic component. The inclined telescopic component connects the lateral tearing cutter to the tilting telescopic movement relative to the rotation center line of the tunneling cutterhead, and the maximum rotation radius of the lateral tearing cutter is greater than the maximum rotation radius of the cutterhead body.

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