Tail shield of shield tunneling machine

Abstract

The utility model relates to the technical field of shield tunneling machines, and discloses a shield tunneling machine tail shield which comprises a supporting shell, the upper side and the lower side of the outer wall of the supporting shell are in threaded connection with first screws, the bottom ends of the outer walls of the first screws are in threaded connection with vertical rods, and the top ends of the outer walls of the vertical rods are in sliding connection with transverse rods. The left side and the right side of the bottom end of the transverse rod are fixedly connected with inclined rods, the rear side of the bottom end of each inclined rod is slidably connected with a second limiting column, the left side and the right side of the outer wall of the supporting shell are in threaded connection with second screws, the right side of the outer wall of each second screw is in threaded connection with a supporting plate, and the rear side of the vertical rod is slidably connected with a first limiting column. The auxiliary rods penetrate through the supporting plate and the transverse rod, the inclined rods are clamped into the two sides of the supporting plate and inserted into the second limiting columns to be fixed, the first screws and the second screws are screwed to penetrate through the supporting shell to enter the vertical rods and the supporting plate, equipment assembling and disassembling are completed, assembling and using are convenient, transportation is convenient, and the transportation cost is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, and in particular to a tail shield for a tunnel boring machine. Background Technology

[0002] With the acceleration of urbanization, large-scale underground projects such as subways, cross-river and cross-sea tunnels, and underground integrated utility tunnels are emerging one after another. These projects place extremely high demands on the precision, speed, safety, and ability to adapt to complex geological conditions in tunnel construction, directly driving the innovation of shield machine tail shield technology. In subway construction, in order to ensure the smoothness of underground tracks, the shield machine tail shield must accurately guide the segment assembly and ensure that the lining alignment meets the design standards. When constructing cross-river and cross-sea tunnels, facing harsh geological conditions such as high water pressure and water-rich sand layers, the tail shield needs to have a strong sealing ability to prevent groundwater and silt from flowing into the shield machine in large quantities, endangering construction safety and project quality.

[0003] A search revealed Chinese Patent Publication No. CN209277883U, which discloses a shield tail of a tunnel boring machine, comprising a shell and multiple annularly arranged sealing mechanisms. An inflation pipe and multiple annular grooves are fixedly installed on the inner wall of the shell. Each sealing mechanism includes an annular platform, an inflation capsule, an elastic fixing component, a guide rod, and multiple wire sealing brushes. The sealing mechanisms are respectively fixed to the annular grooves via the annular platform. An annular stepped hole communicating with the annular groove is provided on the annular platform. A notch for installing the wire sealing brush is provided on one side of the annular stepped hole. The guide rod is fixed to the stepped surface of the stepped hole. The fixing part of the wire sealing brush is movably sleeved on the guide rod. The elastic fixing component is fixed to the annular stepped hole of the annular platform. Part of the inflation capsule is located inside the stepped hole, and another part is located inside the annular groove. The inflation capsules of the sealing mechanisms are all connected to the inflation pipe. This invention can achieve sealing and waterproofing by adjusting the distance between the wire sealing brush and the tunnel segment when water leakage occurs at the shield tail. However, this invention does not consider the large size of the equipment, making it difficult to transport to other locations and incurring high transportation costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a tail shield for a tunnel boring machine, which aims to improve the problem in the prior art that the large size of the equipment makes it difficult to transport to other locations and results in high transportation costs.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a tail shield for a tunnel boring machine, comprising a support shell, with screws threadedly connected to both the upper and lower sides of the outer wall of the support shell, a vertical rod threadedly connected to the bottom of the outer wall of the screws, a horizontal bar slidably connected to the top of the outer wall of the vertical rod, diagonal bars fixedly connected to the left and right sides of the bottom of the horizontal bar, a limit post slidably connected to the rear side of the bottom of the diagonal bar, screws threadedly connected to both the left and right sides of the outer wall of the support shell, a support plate threadedly connected to the right side of the outer wall of the screws, a limit post slidably connected to the rear side of the vertical rod, and an auxiliary mechanism provided on the rear side of the support shell, the auxiliary mechanism being used to prevent external liquids from entering the equipment.

[0006] Through the above technical solutions: Screw 1 is fixedly connected to the upright, ensuring the firmness and reliability of the connection; the upright and the crossbar are slidably connected, allowing the crossbar to be flexibly adjusted in different positions to adapt to different support requirements. This not only improves the flexibility of the system but also allows for rapid adjustment according to actual needs, greatly improving work efficiency; the diagonal brace enhances the stability of the structure; Screw 2 is threadedly connected to the support plate, further enhancing the overall structural stability; the upright and the limiting post 1 are slidably connected, ensuring optimal performance in various working environments; and the auxiliary mechanism is designed to effectively prevent external liquids from entering the equipment, thereby protecting the internal precision components from damage.

[0007] As a further description of the above technical solution:

[0008] The auxiliary mechanism includes a shield body, the front side of which is fixedly connected to the rear side of the support shell. A waterproof plate is fixedly connected to the front side of the inner wall of the shield body. A sliding groove is provided at the bottom end of the inner wall of the shield body. A hole is provided at the front side of the bottom end of the inner wall of the shield body. A baffle is slidably connected to the inner wall of the sliding groove. A pull handle is fixedly connected to the top of the baffle. A sealing ring is fixedly connected to the rear side of the outer wall of the support shell.

[0009] The above technical solutions ensure the stability of the overall structure by fixing the shield body to the support shell, preventing any possible water penetration by the waterproof plate, providing great convenience in practical applications by providing holes in the slide groove to take into account various needs in actual operation, allowing the baffle to slide flexibly to adapt to different usage scenarios, fixing the baffle to the handle so that the operator can operate it easily, and ensuring the sealing performance of the entire device by the sealing ring.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the limiting post one is threadedly connected to the limiting ring two, and the rear side of the outer wall of the limiting post two is threadedly connected to the limiting ring one.

[0012] Through the above technical solutions, limit ring one and limit ring two not only ensure the correct position of the components, but also provide additional safety guarantees.

[0013] As a further description of the above technical solution:

[0014] A washer is slidably connected to the outer wall of the screw, and an auxiliary rod is slidably connected to the bottom end of the crossbar. The outer wall of the auxiliary rod is slidably connected to the inner wall of the support plate.

[0015] The above technical solutions ensure stable support and shock absorption during use. The sliding connection between the crossbar and the auxiliary bar not only enhances the flexibility of the device but also improves its ability to adapt to different working environments. The sliding connection between the auxiliary bar and the support plate ensures that the entire device operates smoothly without obstruction.

[0016] As a further description of the above technical solution:

[0017] The front side of the support shell is fixedly connected to the outer shell, and the inner wall of the outer shell is fixedly connected to multiple connecting plates.

[0018] Through the above technical solution, the outer shell protects the internal structure, and the connecting plate not only stabilizes the structure of the entire device, but also facilitates the installation of other components.

[0019] As a further description of the above technical solution:

[0020] A central column is fixedly connected to the middle of the front side of the support shell, and the outer wall of the central column is fixedly connected to the outer wall of the connecting plate.

[0021] The above technical solution enhances the stability of the structure and ensures the reliability of the entire device.

[0022] As a further description of the above technical solution:

[0023] The rear side of the sealing ring is fixedly connected to the front side of the shield, and the outer wall of the baffle is slidably connected to the inner wall of the hole.

[0024] Through the above technical solutions: the shield body ensures the sealing performance of the device, and the baffle is slidably connected to the hole, which not only ensures the flexible movement of the baffle, but also ensures the cleanliness and smooth operation of the device's interior.

[0025] As a further description of the above technical solution:

[0026] Anti-slip sleeves are fixedly connected to both the left and right sides of the outer wall of the handle, and the outer wall of the handle is slidably connected to the inner wall of the slide groove.

[0027] Through the above technical solution, the anti-slip sleeve not only enhances the grip during operation but also improves the safety of use. The handle and the slide groove are connected, allowing the operator to easily adjust and control the operation.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the auxiliary rod passes through the support plate and the crossbar, the diagonal rod is inserted into both sides of the support plate and the second limiting post is inserted for fixation, and the first limiting ring is turned to prevent detachment. The upright passes through the support plate and the crossbar, the first limiting post is inserted, and the second limiting ring is turned to fix the upright and the crossbar. Finally, the first and second screws are turned to pass through the support shell and enter the upright and the support plate, realizing the assembly and disassembly of the equipment. When needed, the parts can be taken out for assembly and use, and it is convenient for transportation, which greatly reduces transportation costs.

[0030] 2. In this utility model, when the equipment is working, the sealing ring seals the equipment. If some liquid enters the inside of the shield, the waterproof plate will further intercept the liquid. Then, pull the handle, and the baffle moves along the slide groove, opening the hole. The liquid is discharged through the hole, thus achieving internal sealing and preventing liquid from entering and causing damage to the internal facilities, thereby affecting the use of the equipment. Attached Figure Description

[0031] Figure 1 This utility model provides a perspective view of the front side of the connecting plate of the tail shield of a tunnel boring machine.

[0032] Figure 2 This is a partial structural breakdown diagram of the shield body of a tunnel boring machine tail shield proposed in this utility model;

[0033] Figure 3 This is a partial structural diagram of the support shell for the tail shield of a tunnel boring machine proposed in this utility model;

[0034] Figure 4 This is a partial structural diagram of the waterproof plate of the tail shield of a tunnel boring machine proposed in this utility model;

[0035] Figure 5 This is a partial structural diagram of the baffle of the tail shield of a tunnel boring machine proposed in this utility model.

[0036] Legend:

[0037] 1. Support shell; 2. Auxiliary mechanism; 201. Shield body; 202. Waterproof membrane; 203. Sealing ring; 204. Slide groove; 205. Baffle; 206. Hole; 207. Pull handle; 3. Screw one; 4. Upright pole; 5. Horizontal bar; 6. Diagonal bar; 7. Limiting post one; 8. Limiting post two; 9. Support plate; 10. Screw two; 11. Anti-slip sleeve; 12. Connecting plate; 13. Central column; 14. Outer shell; 15. Auxiliary rod; 16. Limiting ring one; 17. Gasket; 18. Limiting ring two. Detailed Implementation

[0038] 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.

[0039] Please see the appendix Figure 1 and attached Figure 3 The present invention provides an embodiment of a shield for a tunnel boring machine, comprising a support shell 1, with screws 3 threadedly connected to the upper and lower sides of the outer wall of the support shell 1, a vertical rod 4 threadedly connected to the bottom of the outer wall of the screws 3, a horizontal rod 5 slidably connected to the top of the outer wall of the vertical rod 4, diagonal rods 6 fixedly connected to the left and right sides of the bottom of the horizontal rod 5, a limit post 8 slidably connected to the rear side of the bottom of the diagonal rod 6, screws 10 threadedly connected to the left and right sides of the outer wall of the support shell 1, a support plate 9 threadedly connected to the right side of the outer wall of the screws 10, a limit post 7 slidably connected to the rear side of the vertical rod 4, an auxiliary mechanism 2 provided on the rear side of the support shell 1, the auxiliary mechanism 2 being used to prevent external liquid from entering the equipment, a limit ring 18 threadedly connected to the outer wall of the limit post 7, and a limit ring 16 threadedly connected to the rear side of the outer wall of the limit post 8.

[0040] Specifically, screw 3 is fixedly connected to the upright 4, ensuring the connection's strength and reliability. The upright 4 is slidably connected to the crossbar 5, allowing the crossbar 5 to be flexibly adjusted in different positions to adapt to different support requirements. This not only improves the system's flexibility but also enables rapid adjustments based on actual needs, greatly improving work efficiency. The diagonal bar 6 enhances the structure's stability. Screw 10 is threadedly connected to the support plate 9, further enhancing the overall structural stability. The upright 4 is slidably connected to the limiting post 7, ensuring optimal performance in various working environments. The auxiliary mechanism 2 is designed to effectively prevent external liquids from entering the equipment, thereby protecting internal precision components from damage. The limiting ring 16 not only ensures the correct position of the components but also provides additional safety assurance.

[0041] Please see the appendix Figure 2 Appendix Figure 4 and attached Figure 5The auxiliary mechanism 2 includes a shield body 201. The front side of the shield body 201 is fixedly connected to the rear side of the support shell 1. A waterproof plate 202 is fixedly connected to the front side of the inner wall of the shield body 201. A sliding groove 204 is opened at the bottom end of the inner wall of the shield body 201. A hole 206 is opened at the front side of the bottom end of the inner wall of the shield body 201. A baffle 205 is slidably connected to the inner wall of the sliding groove 204. A pull handle 207 is fixedly connected to the top end of the baffle 205. A sealing ring 203 is fixedly connected to the rear side of the outer wall of the support shell 1. A central column 13 is fixedly connected to the middle of the front side of the support shell 1. The outer wall of the central column 13 is fixedly connected to the outer wall of the connecting plate 12.

[0042] Specifically, the shield body 201 is fixedly connected to the support shell 1 to ensure the stability of the overall structure. The waterproof plate 202 prevents any possible water penetration. The slide 204 provides great convenience in practical applications. The slide 204 has holes 206 to take into account various needs in actual operation. The baffle 205 can slide flexibly to adapt to different usage scenarios. The baffle 205 is fixedly connected to the handle 207, allowing the operator to operate easily. The sealing ring 203 ensures the sealing performance of the entire device. The support shell 1 enhances the stability of the structure. The central column 13 is fixedly connected to the connecting plate 12 to ensure the reliability of the entire device.

[0043] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 Screw 13 has a washer 17 slidably connected to its outer wall, and crossbar 5 has an auxiliary rod 15 slidably connected to its bottom end. The outer wall of the auxiliary rod 15 is slidably connected to the inner wall of the support plate 9. The front side of the support shell 1 is fixedly connected to the outer shell 14, and the inner wall of the outer shell 14 is fixedly connected to multiple connecting plates 12.

[0044] Specifically, screw 3 is slidably connected to washer 17, ensuring stable support and shock absorption during use. Crossbar 5 is slidably connected to auxiliary rod 15, which not only enhances the flexibility of the device but also improves its ability to adapt to different working environments. Auxiliary rod 15 is slidably connected to support plate 9, allowing the entire device to operate smoothly without obstruction. Housing 14 protects the internal structure. Connecting plate 12 not only stabilizes the structure of the entire device but also facilitates the installation of other components.

[0045] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The rear side of the sealing ring 203 is fixedly connected to the front side of the shield body 201, the outer wall of the baffle 205 is slidably connected to the inner wall of the hole 206, and the left and right sides of the outer wall of the handle 207 are fixedly connected to anti-slip sleeves 11, and the outer wall of the handle 207 is slidably connected to the inner wall of the slide groove 204.

[0046] Specifically, the shield 201 ensures the sealing performance of the device, the baffle 205 is slidably connected to the hole 206, which not only ensures the flexible movement of the baffle 205, but also ensures the cleanliness and smooth operation of the device. The anti-slip sleeve 11 not only enhances the grip during operation, but also improves the safety of use. The handle 207 is slidably connected to the slide 204, which allows the operator to easily adjust and control it.

[0047] Working principle: The auxiliary rod 15 passes through the inner wall of the support plate 9 and the crossbar 5. The diagonal rod 6 is then engaged with the left and right sides of the support plate 9, and the second limiting post 8 is inserted to fix the diagonal rod 6 to the support plate 9. The first limiting ring 16 is then turned to prevent the second limiting post 8 from disengaging. The vertical rod 4 passes through the support plate 9 and the crossbar 5, and the first limiting post 7 is inserted. The second limiting ring 18 is then turned to fix the vertical rod 4 to the crossbar 5. Finally, the first screw 3 and the second screw 10 are turned so that the first screw 3 and the second screw 10 pass through the support shell 1 and enter the vertical rod 4 and the support plate 9 respectively. This realizes the assembly and disassembly of the equipment. When needed, the parts can be removed for assembly and use. It is also convenient for transportation and greatly reduces transportation costs.

[0048] When the equipment is in operation, the sealing ring 203 can seal the equipment and prevent external liquids from entering the equipment. If a small amount of liquid enters the interior, the waterproof plate 202 will further intercept it. Then, pull the handle 207, which will drive the baffle 205 to move along the direction of the slide 204. When the handle 207 moves to the last end, the baffle 205 will open the hole 206 completely, and the liquid flowing into the shield 201 will be discharged along the hole 206, thus achieving internal sealing and preventing liquid from entering and causing damage to the internal facilities, thereby affecting the use of the equipment.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tail shield for a tunneling machine comprising a support shell (1), characterized in that: The outer wall of the support shell (1) is threadedly connected with a screw one (3) on the upper and lower sides, the outer wall bottom end of the screw one (3) is threadedly connected with a vertical rod (4), the outer wall top end of the vertical rod (4) is slidably connected with a cross rod (5), the bottom end of the cross rod (5) is fixedly connected with an inclined rod (6) on the left and right sides, the bottom end rear side of the inclined rod (6) is slidably connected with a limiting column two (8), the outer wall of the support shell (1) is threadedly connected with a screw two (10) on the left and right sides, the outer wall right side of the screw two (10) is threadedly connected with a support plate (9), the rear side of the vertical rod (4) is slidably connected with a limiting column one (7), the rear side of the support shell (1) is provided with an auxiliary mechanism (2), and the auxiliary mechanism (2) is used for preventing external liquid from entering the equipment.

2. The tail shield of a tunneling machine according to claim 1, characterized in that: The auxiliary mechanism (2) comprises a shield body (201), the front side of the shield body (201) is fixedly connected with the rear side of the support shell (1), the inner wall front side of the shield body (201) is fixedly connected with a waterproof plate (202), the inner wall bottom end of the shield body (201) is provided with a sliding groove (204), the inner wall bottom end front side of the shield body (201) is provided with a hole (206), the inner wall of the sliding groove (204) is slidably connected with a baffle (205), the top end of the baffle (205) is fixedly connected with a pull handle (207), and the outer wall rear side of the support shell (1) is fixedly connected with a sealing ring (203).

3. The tail shield of a tunneling machine according to claim 1, characterized in that: The outer wall of the limiting column one (7) is threadedly connected with a limiting ring two (18), and the outer wall rear side of the limiting column two (8) is threadedly connected with a limiting ring one (16).

4. The tail shield of a tunneling machine according to claim 1, characterized in that: The outer wall of the screw one (3) is slidably connected with a gasket (17), the bottom end of the cross rod (5) is slidably connected with an auxiliary rod (15), and the outer wall of the auxiliary rod (15) is slidably connected with the inner wall of the support plate (9).

5. The tail shield of a tunneling machine according to claim 1, characterized in that: The front side of the support shell (1) is fixedly connected with an outer shell (14), and the inner wall of the outer shell (14) is fixedly connected with a plurality of connecting plates (12).

6. The tail shield of a tunneling machine according to claim 1, characterized in that: The front side middle part of the support shell (1) is fixedly connected with a center column (13), and the outer wall of the center column (13) is fixedly connected with the outer wall of the connecting plate (12).

7. The tail shield of a tunneling machine according to claim 2, characterized in that: The rear side of the sealing ring (203) is fixedly connected with the front side of the shield body (201), and the outer wall of the baffle (205) is slidably connected with the inner wall of the hole (206).

8. The tail shield of a tunneling machine according to claim 2, characterized in that: The outer wall of the pull handle (207) is fixedly connected with an anti-skid sleeve (11) on the left and right sides, and the outer wall of the pull handle (207) is slidably connected with the inner wall of the sliding groove (204).

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