Shield / TBM construction starting device

Abstract

The utility model provides a shield / TBM (Tunnel Boring Machine) construction starting device, which comprises shield equipment, a main shaft, a main shaft, an auxiliary shaft, a main shaft and an auxiliary shaft, and is characterized in that the shield equipment is arranged in a starting cavern and comprises a support shield body; the starting base frame is arranged below the shield equipment; the anti-torsion limiting device is arranged between the starting base frame and a supporting shield body of the shield tunneling equipment, and the anti-torsion limiting device is connected with the supporting shield body and the starting base frame through threads and / or pin shafts. Through the anti-torsion limiting device, the anti-torsion effect on the supporting shield body is achieved, and reaction torque for propelling of the propelling oil cylinder can be provided; according to the anti-torsion limiting device, the anti-torsion limiting device is connected with the supporting shield body and the starting base frame through the threads and / or the pin shafts, so that the anti-torsion limiting device can be repeatedly disassembled and installed more easily and conveniently in the starting propelling process, and the installation and removal efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to a shield / TBM construction starting device. Background Art

[0002] During the construction process, the shield machine is started after assembly and debugging. Common starting methods are as follows: 1. Pre-excavate the starting cavern, use the auxiliary jacking cylinder to push the assembled shield machine into the starting cavern, and use the friction reaction force generated by the support shoe to tighten the wall of the starting cavern to keep the shield machine moving forward. This starting method requires the pre-excavation of the starting cavern, which is excavated by the drilling and blasting method. There are problems of over-excavation and under-excavation, and secondary grouting is required after the drilling and blasting excavation is completed, which increases the civil engineering workload of the project, wastes a lot of manpower and material resources, and also hinders the improvement of construction efficiency. 2. Use a steel structure shield steel sleeve instead of the starting cavern. After the TBM is assembled, it is pushed into the shield steel sleeve, and the support shoe is used to tighten the inner side of the shield steel sleeve to provide excavation reaction force. This method has high strength requirements for the shield steel sleeve, and the shield steel sleeve is large in size, heavy in weight, and inconvenient to disassemble and assemble.

[0003] The announcement date is 2022.10.28, and the announcement number is CN 217681735 U's Chinese utility model patent discloses a TBM non-starting cavern starting tooling, including a TBM main machine, the TBM main machine includes a cutterhead, a front shield, a propulsion cylinder and a support shield, and also includes a starting base frame, a base frame extension frame, a reaction support and a reaction anti-twist tooling and a top push adjustment cylinder; the starting base frame is composed of multiple sections, each starting base frame includes a middle base frame and a side base frame, and a number of bolt holes are respectively opened on the middle base frame and the side base frame; a base frame extension frame is arranged between the side base frame at the head end of the starting base frame and the starting face; the tail end of the starting base frame is tightly against the reaction support; there is a gap between the cutterhead and the base frame extension frame; the radial sides of the support shield are respectively bolted with reaction anti-twist tooling, and the reaction anti-twist tooling is bolted to the middle base frame; the two sides of the middle base frame are bolted with reaction seats, and a top push adjustment cylinder is arranged on the reaction seat, and the top push adjustment cylinder is connected to the rear end of the support shield. However, the arc plate of the anti-twist tooling of the TBM's non-guide tunnel starting tooling is connected to the support shield bolts during installation, and multiple bolts are provided along the surface of the arc plate. During the initial advancement process, the connection structure between the arc plate and the support shield needs to be released, which results in high labor intensity for workers and low construction efficiency. Summary of the invention

[0004] In view of the above-mentioned technical problems, the utility model proposes a shield / TBM construction starting device, which is used to solve the problem of low installation and release efficiency of the anti-twist tooling of the shield starting device in the prior art.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A shield / TBM construction starting device, comprising:

[0007] The shield equipment is located in the starting tunnel, including the supporting shield body;

[0008] The starting base frame is arranged below the shield equipment;

[0009] The anti-twist limit device is arranged between the starting base frame and the support shield body, and the anti-twist limit device is respectively connected to the support shield body and the starting base frame through threads and / or pins. The utility model not only plays an anti-twist role on the support shield body through the anti-twist limit device, but also provides a reaction torque for the propulsion of the propulsion cylinder; the anti-twist limit device of the utility model is respectively connected to the support shield body and the starting base frame through threads and / or pins, which makes it easier to repeatedly disassemble and install the anti-twist limit device during the starting propulsion process, thereby improving the installation and release efficiency.

[0010] Furthermore, a threaded countersunk hole is provided at the bottom of the support shield body, and the anti-torsion limiting device is threadedly connected to the threaded countersunk hole.

[0011] Furthermore, an anti-twist base body is provided on the starting base frame, and the anti-twist limit device is connected to the anti-twist base body via a pin shaft.

[0012] Furthermore, the anti-twist limiting device comprises an external thread column threadedly connected to the threaded countersunk hole, and the external thread column is connected to a bearing mounting member via a connecting base.

[0013] Furthermore, the bearing mounting member is hinged on the connecting base through a rotating pair.

[0014] Furthermore, the pin shaft is inserted into the load-bearing mounting member and the anti-twist base body.

[0015] Furthermore, the pin is threadedly connected to the anti-twist base body and / or the load-bearing mounting piece.

[0016] Furthermore, a latch is vertically inserted into the pin shaft.

[0017] Furthermore, the pin shaft end is hinged with a positioning locking piece, which includes an arc-shaped protrusion hinged to the pin shaft through a hinge shaft and a lever part used to pull the arc-shaped protrusion to rotate around the hinge shaft, and the lever part is connected to one side of the arc-shaped protrusion; the hinge shaft eccentrically passes through the arc-shaped protrusion.

[0018] Furthermore, the starting base frame includes an intermediate base frame section symmetrically arranged with respect to the axis of the supporting shield body and a side base frame section arranged outside the intermediate base frame section, and the anti-twist base body is arranged on the side base frame section.

[0019] Beneficial effects of the utility model:

[0020] 1. The utility model not only plays an anti-twist role for the supporting shield body through the anti-twist limit device, but also provides a reaction torque for the propulsion cylinder to propel;

[0021] 2. The anti-twist limit device of the utility model is connected to the support shield and the starting base frame respectively through threads and / or pins, which makes it easier to repeatedly disassemble and install the anti-twist limit device during the starting propulsion process, thereby improving the installation and release efficiency;

[0022] 3. The utility model further effectively solves the technical problems of complex assembly of the twisting tooling of the starting excavation cavern equipment, low construction efficiency and high labor intensity using the existing technology, while meeting the premise that the shield equipment does not increase the civil engineering workload and construction cost and waste manpower and material resources when starting to excavate the starting cavern. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0026] Figure 3 for Figure 2 A is a schematic diagram of the partially enlarged structure of Examples 3 to 5.

[0027] Figure 4 for Figure 2 A is a schematic diagram of the partially enlarged structure of Example 6.

[0028] In the figure: 1, cutter disc, 2, front shield, 3, thrust cylinder, 4, support shield body, 5, starting base frame, 6, middle base frame section, 7, side base frame section, 8, connecting bolts, 9, reaction seat, 10, middle base frame bolts, 11, push cylinder, 12, base frame extension frame, 13, reaction support, 14, anti-torsion limit device, 15, countersunk connector, 16, countersunk connecting thread, 17, connecting base, 18, installation connecting hole, 19, threaded countersunk hole, 20, rotating pair, 21, load-bearing mounting part, 22, anti-torsion base body, 23, positioning locking part, 24, locking nut. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1 and Figure 2 As shown, a shield / TBM construction starting device described in Example 1 of the utility model includes a shield machine and a starting base frame 5. The basic components of the shield machine include a cutter head 1, a front shield 2, a main drive, a propulsion cylinder 3 and a support shield body 4. The cutter head 1 is arranged at the front end of the front shield 2, the main drive is arranged in the front shield 2, the propulsion cylinder 3 is arranged at the rear side of the front shield 2, and the support shield body 4 is arranged at the rear end of the propulsion cylinder 3. During the starting process, the shield machine is arranged in the starting cavern, and the starting base frame 5 is arranged below the shield machine.

[0031] like Figure 2 As shown, an anti-twist limiter 14 is provided between the starting base frame 5 and the supporting shield body 4 of the shield equipment, which not only plays an anti-twist role for the supporting shield body 4, but also provides a reaction torque for the propulsion cylinder 3 to propel.

[0032] The anti-twist limiter 14 is connected to the support shield 4 and the starting base frame 5 respectively through threads and / or pins. In this embodiment, the anti-twist limiter 14 is threadedly connected to the support shield 4, and the anti-twist limiter 14 is connected to the starting base frame 5 through a pin. The threaded / pin connection makes it easier to repeatedly disassemble and install the anti-twist limiter 14 during the starting propulsion process.

[0033] Embodiment 2 is different from Embodiment 1 in that Figure 2 and Figure 3 As shown, a threaded countersunk hole 19 is provided at the bottom of the support shield body 4 , and the anti-twist limiting device 14 is threadedly connected to the threaded countersunk hole 19 .

[0034] Specifically, Figure 3 As shown, the anti-torsion limit device 14 includes a countersunk hole connector 15 threadedly connected to the threaded countersunk hole 19. The countersunk hole connector 15 is provided with a countersunk hole connection thread 16. In this embodiment, symmetrical threaded countersunk holes 19 are provided on both sides of the bottom of the support shield body 4. Correspondingly, a symmetrical anti-torsion limit device 14 is also provided between the support shield body 4 and the starting base frame 5. The countersunk hole connector 15 of the anti-torsion limit device 14 can be inserted into the corresponding threaded countersunk hole 19 and threadedly connected to the threaded countersunk hole 19. The outer end of the countersunk hole connector 15 is connected to a load-bearing mounting member 21 through a connecting base 17.

[0035] Furthermore, the bearing mounting member 21 is hinged to the connection base 17 via the rotating pair 20, so that the bearing mounting member 21 can rotate around the axis of the rotating pair 20, thereby improving the flexibility of the anti-twist limiting device 14 during installation and removal.

[0036] Embodiment 3 is different from Embodiment 2 in that Figure 2 and Figure 3 As shown, the starting base frame 5 is provided with an anti-twist base body 22, and the anti-twist limit device 14 is connected to the anti-twist base body 22 through a pin. In this embodiment, the anti-twist base body 22 is a right-angled trapezoidal structure, the bottom edge of the right-angled trapezoidal structure is fixed on the starting base frame 5, and the right-angled side of the right-angled trapezoidal structure cooperates with the bearing mounting member 21. In this embodiment, the anti-twist base body 22 is located on the outside of the bearing mounting member 21. Figure 3 As shown, the pin is inserted into the load-bearing mounting member 21 and the anti-twist base body 22 at the same time, and the pin is perpendicular to the axial direction of the support shield body 4 and transversely passes through the load-bearing mounting member 21 and the anti-twist base body 22, thereby connecting the anti-twist base body 22 with the anti-twist limit device 14.

[0037] In a preferred embodiment, an external thread is provided on the pin shaft. A locking nut 24 is provided between the load-bearing mounting member 21 and the anti-twist base body 22 and is threadedly connected to the pin shaft. The locking nut 24 is threadedly connected to the pin shaft to prevent the pin shaft from being separated from the load-bearing mounting member 21 and the anti-twist base body 22. The locking nut 24 may be fixed to one of the load-bearing mounting member 21 and the anti-twist base body 22, or may be disconnected from both.

[0038] Embodiment 4 is different from Embodiment 3 in that Figure 3 As shown, a plug pin 231 is vertically inserted into the pin shaft. In this embodiment, an insertion hole is provided at the end of the pin shaft, i.e., at a position outside the load-bearing mounting member 21 and the anti-twist base body 22. By vertically inserting the plug pin 231, the pin shaft is prevented from falling off from the other end, and the pin shaft is tightly connected to the load-bearing mounting member 21 and / or the anti-twist base body 22.

[0039] Embodiment 5 is different from Embodiment 3 in that the pin is threadedly connected to the anti-twist base body 22 and / or the load-bearing mounting member 21. In this embodiment, the pin is provided with an external thread. Figure 3As shown, the anti-twist base body 22 and the load-bearing mounting member 21 are respectively provided with a base body through-hole and a mounting member through-hole for the pin to pass through, and the base body through-hole and the mounting member through-hole are aligned. In one embodiment, the base body through-hole and the mounting member through-hole can be set as internal threaded holes; in another embodiment, the mounting member through-hole is set as an internal threaded hole, and a locking nut 24 is fixed on one side of the anti-twist base body 22, and the locking nut 24 is threadedly connected to the pin, so that the pin is threadedly connected to the anti-twist base body 22 and the load-bearing mounting member 21.

[0040] Embodiment 6 is different from Embodiment 3 in that Figure 4 As shown, a positioning locking member 232 is provided at the end of the pin shaft. Specifically, the positioning locking member 232 includes an arc-shaped protrusion hinged at the end of the pin shaft and a pull part for pulling the arc-shaped protrusion to rotate around the hinge axis. The arc-shaped protrusion is hinged to the pin shaft through the hinge axis. Specifically, a U-shaped opening is provided at the upper end of the arc-shaped protrusion, and the arc-shaped protrusion extends to both sides of the end of the pin shaft through the U-shaped opening. The hinge axis passes through the arc-shaped protrusion and the end of the pin shaft located in the U-shaped opening, so as to play a role in hinge connection between the arc-shaped protrusion and the pin shaft. The hinge shaft passes through the arc-shaped protrusion eccentrically, so that one side of the arc-shaped protrusion is closest to the hinge axis and the other side is farthest from the hinge axis. The pull part can be connected to the end of the side farthest from the hinge axis, or it can be connected to other surfaces, but it does not prevent the arc-shaped protrusion from rotating from the side closest to the hinge axis to the side farthest from the hinge axis to the bearing mounting member 21.

[0041] Furthermore, the side of the arc-surface protrusion farthest from the hinge axis is a plane parallel to the hinge axis. The structure of the plane ensures that after the arc-surface protrusion presses the bearing mounting member 21 through the plane, the arc-surface protrusion will not flip over at will, which not only prevents the pin shaft from falling off, but also makes the pin shaft and the bearing mounting member 21 and the anti-twist base body 22 tightly connected. The plane and the other arc surfaces of the arc-surface protrusion have a smooth transition, which facilitates the arc-surface protrusion to turn from one side to the other side. In other embodiments, the side of the arc-surface protrusion far from the hinge axis can also be set as a relatively gentle arc surface.

[0042] In this embodiment, Figure 4 As shown, the pull part is a handle, and the handle extends from the side of the arc surface protrusion closest to the hinge axis to the far side. When the pin is initially installed, the handle is located on the upper side of the arc surface protrusion or along the axial direction of the pin. After the pin penetrates the anti-twist base body 22 and the bearing mounting member 21, the handle is pressed down to control the rotation of the positioning locking member 232 through the handle so that the plane of the arc surface protrusion farthest from the hinge axis rotates to press the side of the bearing mounting member 21, thereby playing the role of locking the pin.

[0043] Embodiment 7 is different from Embodiment 3 in that Figure 1As shown, the starting frame 5 includes a plurality of starting frame units arranged front and back along the axis direction of the supporting shield body 4, and the adjacent starting frame units are fixedly connected by connecting bolts 8. And each starting frame unit includes an intermediate frame section 6 arranged directly below the supporting shield body 4, and the intermediate frame section 6 is a concave structure, and the concave structure matches the shield structure of the shield equipment. In this embodiment, the intermediate frame section 6 is two blocks symmetrically arranged along the axis of the supporting shield body 4, and the two blocks are fixedly connected by connecting bolts 8. The anti-torsion base body 22 is symmetrically arranged on the two blocks of the intermediate frame section 6. The anti-torsion base body 22 is arranged in stages on the intermediate frame section 6 according to the starting length requirements of the shield.

[0044] Furthermore, the initial base frame unit body also includes a side base frame segment 7, which is arranged outside the middle base frame segment 6. In this embodiment, two side base frame segments 7 in each initial base frame unit body are also symmetrically provided with the axis of the supporting shield body 4, and the two side base frame segments 7 are respectively arranged outside the two sides of the middle base frame segment 6. And the side base frame segment 7 and the middle base frame segment 6 are fixedly connected by welding or riveting.

[0045] Embodiment 8 is different from Embodiment 7 in that Figure 1 As shown, a reaction seat 9 is provided on the upper side of the starting base frame 5 and at the rear of the support shield body 4, and the reaction seat 9 is connected to the middle base frame section 6 of the starting base frame 5 through the middle base frame bolt 10. In this embodiment, at least two reaction seats 9 are symmetrically provided with the axis of the support shield body 4. A push cylinder 11 is provided at the front end of the reaction seat 9, and the other end of the push cylinder 11 is abutted against the support shield body 4 for fine-tuning the support shield body 4.

[0046] Embodiment 9 is different from Embodiment 7 in that Figure 1 As shown, a base extension frame 12 is also arranged between the starting base frame 5 and the starting tunnel face. The distance between the shield cutter head 1 and the starting tunnel face is smaller than the distance between the base extension frame 12 and the starting tunnel face, and the outer contour of the shield cutter head does not contact the base extension frame 12.

[0047] Embodiment 10 is different from Embodiment 7 in that Figure 1 As shown, a reaction force support 13 is also provided at the end of the starting base frame 5. The reaction force support 13 is inserted into the ground through anchor bolts and is used to provide a reverse force for the starting of the shield equipment.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that any modification to the technical solutions described in the aforementioned embodiments, or any equivalent replacement of some or all of the technical features therein, within the spirit and principles of the present invention, and such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A shield / TBM construction starting device, characterized in that: include: The shield equipment is arranged in the starting tunnel and includes a supporting shield body (4); A starting base frame (5) is arranged below the shield equipment; The anti-twist limit device (14) is arranged between the starting base frame (5) and the supporting shield body (4), and the anti-twist limit device (14) is respectively connected to the supporting shield body (4) and the starting base frame (5) through threads and / or pins.

2. The shield / TBM construction starting device according to claim 1, characterized in that: A threaded countersunk hole (19) is provided at the bottom of the support shield body (4), and the anti-twist limit device (14) is threadedly connected to the threaded countersunk hole (19).

3. The shield / TBM construction starting device according to claim 2, characterized in that: An anti-twist base body (22) is provided on the starting base frame (5), and the anti-twist limit device (14) is connected to the anti-twist base body (22) via a pin shaft.

4. The shield / TBM construction starting device according to claim 3, characterized in that: The anti-twist limiting device (14) comprises a countersunk hole connector (15) threadedly connected to the threaded countersunk hole (19), and the countersunk hole connector (15) is connected to a bearing mounting member (21) via a connecting base (17).

5. The shield / TBM construction starting device according to claim 4, characterized in that: The bearing mounting member (21) is hingedly connected to the connecting base (17) via a rotating pair (20).

6. The shield / TBM construction starting device according to claim 4 or 5, characterized in that: The pin shaft is inserted into the bearing mounting member (21) and the anti-twist base body (22).

7. The shield / TBM construction starting device according to claim 6, characterized in that: The pin is threadedly connected to the anti-rotation base body (22) and / or the load-bearing mounting member (21).

8. The shield / TBM construction starting device according to claim 6, characterized in that: A latch pin (231) is vertically inserted into the pin shaft.

9. The shield / TBM construction starting device according to claim 6, characterized in that: The pin shaft end is hinged with a positioning locking piece (232), the positioning locking piece (232) comprising an arc-surface convex block hinged to the pin shaft via a hinge shaft and a lever portion used to lever the arc-surface convex block to rotate around the hinge shaft, the lever portion being connected to one side of the arc-surface convex block; the hinge shaft eccentrically passes through the arc-surface convex block.

10. The shield / TBM construction starting device according to any one of claims 3 to 5 and 7 to 9, characterized in that: The starting base frame (5) comprises an intermediate base frame section (6) symmetrically arranged about the axis of the supporting shield body (4) and a side base frame section (7) arranged outside the intermediate base frame section (6), and the anti-twist base body (22) is arranged on the side base frame section (7).

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