Shield launching tunnel portal extension steel ring
By designing an extended steel ring for the shield tunneling starting portal, the shield cutterhead can directly break piles, solving the dust pollution problem caused by traditional manual pile breaking and improving the quality and safety of the construction environment.
Patent Information
- Application Number
- CN202422733586.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Traditional manual pile breaking generates a large amount of dust during tunnel boring machine (TBM) construction, leading to decreased air quality, a harsh environment, and a threat to the health and safety of workers.
Design a shield tunneling starting portal extension steel ring, including ring petals, rubber ring plates and hinge plates. The ring petals form a steel ring and are fixed to the working face. The rubber ring plates are concentric with the steel ring, and the hinge plates ensure a seal, enabling the shield cutterhead to directly break piles.
This eliminates the need for manual pile breaking, reduces dust emissions, creates a healthy construction environment, and ensures worker safety.
Smart Images
Figure CN223824990U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of shield tunneling starting auxiliary technology, specifically relating to a shield tunneling starting portal extension steel ring. Background Technology
[0002] In subway tunnel construction, the launch of the tunnel boring machine is a crucial step. In the past, due to the close distance between the tunnel entrance seal and the tunnel face, in order to prevent the cutterhead from damaging the rubber sheeting of the tunnel boring machine when breaking piles, it was usually necessary to manually break the tunnel face to a depth of 60cm before breaking piles to ensure space for the cutterhead to rotate.
[0003] Currently, traditional manual pile breaking construction generates a large amount of dust, which seriously degrades air quality, creates a harsh construction environment, and poses a threat to workers' health. In addition, the working face is huge, and manual pile breaking has certain safety hazards.
[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content
[0005] The purpose of this invention is to overcome the problems that traditional manual pile breaking generates a large amount of dust, severely degrades air quality, creates a harsh construction environment, and poses a serious threat to the health and safety of workers due to the large area of the tunnel face. This invention provides a shield tunneling starting portal extension steel ring.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A shield tunneling portal extension steel ring includes: ring petals, rubber ring plates, and hinge plates. Each ring petal includes: an extension arc plate, an installation arc plate, a positioning arc plate, and a connecting plate. The extension arc plate is horizontally positioned between the installation arc plate and the positioning arc plate. The front end of the extension arc plate is perpendicularly abutted to the center of the rear surface of the installation arc plate. The positioning arc plate is vertically positioned on the outer rear arc surface of the extension arc plate and attached to the working surface. The connecting plate is located between the extension arc plate and the installation arc plate. Multiple ring petals are joined together along a ring to form a complete steel ring. The extension arc plates of adjacent ring petals... The mounting arc plate and the positioning arc plate are attached end-to-end, and the connecting plates of two adjacent annular lobes are attached face-to-face and fixed by fasteners; the rubber ring plate is concentric with the steel ring to cover the front plate surface of the mounting arc plate, and the inner diameter of the rubber ring plate is smaller than the outer diameter of the shield cutterhead; the hinge plate includes a fixing plate and a flip plate, the fixing plate and the flip plate are hinged to each other, the fixing plate is attached to the front plate surface of the rubber ring plate, the flip plate is attached to the front plate surface of the rubber ring plate located in the annular space of the steel ring, and the swing direction of the flip plate is consistent with the axial direction of the rubber ring plate.
[0008] In the shield tunneling portal extension steel ring as described above, preferably, the outer arc of the positioning arc plate is longer than the outer arc of the mounting arc plate, so that the radial length of the positioning arc plate is greater than the radial length of the mounting arc plate.
[0009] Preferably, the positioning arc plate has an anchor nail driven perpendicularly to the working surface at the middle of the radial length portion extending beyond the mounting arc plate.
[0010] Preferably, a connecting arc plate is provided between two adjacent anchors.
[0011] Preferably, the inner diameter of the steel ring formed by the multiple ring lobes is larger than the outer diameter of the shield cutterhead.
[0012] Preferably, the fastener is a bolt.
[0013] Preferably, multiple hinge plates are distributed along the circumferential direction of the rubber ring plate;
[0014] Each of the multiple folding plates has a connecting ring protruding from its outer surface.
[0015] Preferably, an elastic rope is threaded through the connecting ring, and multiple folding plates are strung together by the elastic rope.
[0016] Preferably, the fixing plate has a positioning tube protruding from the side facing the rubber ring plate;
[0017] The surface of the rubber ring plate is provided with through holes corresponding to the positioning tube column.
[0018] Preferably, the length of the alignment tube is matched with the depth of the through hole.
[0019] Beneficial effects: This utility model can directly break piles through the shield cutterhead, thereby eliminating the manual pile breaking process and avoiding threats to the health and safety of workers. At the same time, this utility model can effectively reduce the dust emitted by the shield cutterhead during pile breaking, thus creating a healthy working environment. The effect of using this utility model is excellent. Attached Figure Description
[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:
[0021] Figure 1 This is a front view schematic diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the overall design of this utility model;
[0023] Figure 3 for Figure 2Rear view diagram;
[0024] Figure 4 This is a schematic diagram of the overall structure of the annular lobe of this utility model;
[0025] Figure 5 This is an overall schematic diagram of the rear panel of the folding board of this utility model;
[0026] Figure 6 This is a schematic diagram of the overall structure of the connecting plate of this utility model.
[0027] In the diagram: 1. Ring petal; 2. Extending arc plate; 3. Installing arc plate; 4. Positioning arc plate; 5. Connecting plate; 6. Rubber ring plate; 7. Fixing plate; 8. Flip plate; 9. Anchor nail; 10. Connecting arc plate; 11. Serial ring; 12. Elastic rope; 13. Alignment column. Detailed Implementation
[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.
[0029] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.
[0031] This embodiment aims to provide an extension steel ring for the tunnel portal of a shield tunnel. Its main function is to eliminate the need for manual pile breaking and effectively reduce the dust emitted during pile breaking, thereby creating a healthy working environment.
[0032] Reference Figure 1-4The system includes: ring petals 1, rubber ring plates 6, and hinge plates. Multiple ring petals 1 are joined together along the ring to form a complete steel ring. The inner diameter of the steel ring formed by multiple ring petals 1 is larger than the outer diameter of the shield cutterhead. Each ring petal 1 includes: an extension arc plate 2, an installation arc plate 3, a positioning arc plate 4, and a connecting plate 5. The extension arc plate 2 is welded laterally between the installation arc plate 3 and the positioning arc plate 4. The front end of the extension arc plate 2 is vertically welded to the middle of the rear plate surface of the installation arc plate 3. The positioning arc plate 4 is vertically welded to the outer arc surface of the rear end of the extension arc plate 2 and attached to the working surface. A pair of connecting plates 5 are welded between the extension arc plate 2 and the installation arc plate 3. The extension arc plates 2, installation arc plates 3, and positioning arc plates 4 of two adjacent ring petals 1 are attached end to end. The two adjacent connecting plates 5 on two adjacent ring petals 1 are attached face to face and fixed by fasteners, such as bolts.
[0033] In this embodiment, the outer arc of the positioning arc plate 4 is longer than the outer arc of the mounting arc plate 3, so that the radial length of the positioning arc plate 4 is greater than the radial length of the mounting arc plate 3. Anchor nails 9 are driven perpendicularly to the working face in the middle of the portion of the positioning arc plate 4 that extends beyond the radial length of the mounting arc plate 3. The purpose of making the radial length of the positioning arc plate 4 greater than the radial length of the mounting arc plate 3 is to facilitate the driving of anchor nails 9, so as not to restrict the driving of anchor nails 9 by the distance between the positioning arc plate 4 and the mounting arc plate 3.
[0034] In actual use, the steel ring is attached to the working surface, and then anchor nails 9 are driven vertically on the outer edge of the positioning arc plate 4. The steel ring is then fixed in front of the working surface by the anchor nails 9. The extension steel ring is then fixed. After that, the shield cutterhead is pushed towards the working surface along the center of the steel ring.
[0035] In this embodiment, refer to Figure 2 and Figure 6 A connecting arc plate 10 is provided between two adjacent anchors 9. The two ends of the connecting arc plate 10 are respectively sleeved on the outside of the two adjacent anchors 9. The stability of the connection between the ring petals 1 can be effectively enhanced by the connecting plate 5.
[0036] Reference Figure 1-3 The rubber ring plate 6 is concentrically arranged with the steel ring so that the rubber ring plate 6 is attached to the front plate surface of the mounting arc plate 3. The inner diameter of the rubber ring plate 6 is smaller than the outer diameter of the shield cutterhead, and part of the rubber ring plate 6 is located within the annular space of the steel ring. The purpose is to utilize the excellent deformation capacity of the rubber ring plate 6 to tightly fit the outer wall of the shield machine during the advancement of the shield cutterhead along the annular space of the steel ring, thereby ensuring sealing performance.
[0037] Reference Figure 1-3Multiple hinge plates are distributed along the annular direction of the rubber ring plate 6. The hinge plates include a fixed plate 7 and a flap 8. The fixed plate 7 and the flap 8 are hinged to each other. The fixed plate 7 is attached to the front plate surface of the rubber ring plate 6 and fixed to the corresponding mounting arc plate 3 by bolts. The flap 8 is attached to the front plate surface of the rubber ring plate 6 located in the annular space of the steel ring, and the swing direction of the flap 8 is consistent with the axial direction of the rubber ring plate 6. The flap 8 can prevent the rubber ring plate 6 from deforming in the opposite direction during the advancement of the shield cutterhead, thus ensuring the sealing effect of the rubber ring plate 6.
[0038] In this embodiment, the outer surface of the flaps 8 of the multiple folding plates is provided with a connecting ring 11, and an elastic rope 12 is threaded through the connecting ring 11. The elastic rope 12 is a ring in shape. The multiple folding plates can be strung together by the cooperation of the elastic rope 12 and the connecting ring 11. The purpose is to ensure that all flaps 8 maintain the same shape in a static state, avoid some flaps 8 from swinging outward toward the annular space of the steel ring, and at the same time not affect the flaps 8 from swinging inward toward the annular space of the steel ring.
[0039] In this embodiment, refer to Figure 1 , Figure 2 and Figure 5 A positioning tube post 13 protrudes from the center of the side of the fixing plate 7 facing the rubber ring plate 6, and the surface of the rubber ring plate 6 is provided with a through hole corresponding to the positioning tube post 13. The through hole is not shown in the figure. The rubber ring plate 6 and the fixing plate 7 can be quickly assembled by the cooperation of the positioning tube post 13 and the through hole, thereby speeding up the assembly speed of the hinge plate and the mounting arc plate 3. The length of the positioning tube post 13 matches the depth of the through hole, ensuring that the fixing plate 7 is fixed to the corresponding mounting arc plate 3 while also clamping and fixing the rubber ring plate 6. The cavity of the positioning tube post 13 is used for the shank of the bolt to pass through.
[0040] The extended steel ring provided in this embodiment can directly break piles through the shield cutterhead, thereby eliminating the need for manual pile breaking and avoiding threats to the health and safety of workers. At the same time, it can also effectively reduce the dust emitted by the shield cutterhead during pile breaking, thus creating a healthy working environment and achieving excellent results.
[0041] It is understood that the above description is merely exemplary and the embodiments of this application do not limit the scope of the application.
[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.
Claims
1. A steel ring for extending the portal of a shield tunneling machine, characterized in that, include: The annular petal includes: an extending arc plate, a mounting arc plate, a positioning arc plate, and a connecting plate. The extending arc plate is horizontally placed between the mounting arc plate and the positioning arc plate. The front end of the extending arc plate is perpendicularly connected to the middle of the rear plate surface of the mounting arc plate. The positioning arc plate is perpendicularly disposed on the outer arc surface of the rear end of the extending arc plate and attached to the working surface. The connecting plate is disposed between the extending arc plate and the mounting arc plate. Multiple ring petals are joined together along a ring to form a complete steel ring. The extension arc plates, mounting arc plates, and positioning arc plates of two adjacent ring petals are attached end to end. The connecting plates of two adjacent ring petals are attached face to face and fixed by fasteners. A rubber ring plate, concentric with a steel ring, is attached to the front surface of the mounting arc plate. The inner diameter of the rubber ring plate is smaller than the outer diameter of the shield cutterhead. The hinge plate includes a fixed plate and a flap, wherein the fixed plate and the flap are hinged to each other, the fixed plate is attached to the front surface of the rubber ring plate, the flap is attached to the front surface of the rubber ring plate which is located in the annular space of the steel ring, and the swing direction of the flap is consistent with the axial direction of the rubber ring plate. The folding plates are distributed in multiple ways along the circumferential direction of the rubber ring plate; Each of the multiple folding plates has a connecting ring protruding from its outer surface.
2. The shield tunneling starting portal extension steel ring according to claim 1, characterized in that, The outer arc of the positioning arc plate is longer than the outer arc of the mounting arc plate, so that the radial length of the positioning arc plate is greater than the radial length of the mounting arc plate.
3. The shield tunneling starting portal extension steel ring according to claim 2, characterized in that, An anchor nail is driven perpendicularly into the working surface at the middle of the radial length portion of the positioning arc plate that extends beyond the mounting arc plate.
4. The shield tunneling starting portal extension steel ring according to claim 3, characterized in that, A connecting arc plate is provided between two adjacent anchors.
5. The shield tunneling starting portal extension steel ring according to claim 1, characterized in that, The inner diameter of the steel ring, which is composed of multiple ring lobes, is larger than the outer diameter of the shield cutterhead.
6. The shield tunneling starting portal extension steel ring according to claim 1, characterized in that, The fastener is a bolt.
7. The shield tunneling starting portal extension steel ring according to claim 1, characterized in that, An elastic rope is threaded through the connecting loop, and multiple folding panels are strung together by the elastic rope.
8. The shield tunnel launching portal extension steel ring according to claim 1, characterized in that, The fixing plate has a positioning tube column protruding on the side facing the rubber ring plate; The surface of the rubber ring plate is provided with through holes corresponding to the positioning tube column.
9. The shield tunneling starting portal extension steel ring according to claim 8, characterized in that, The length of the alignment tube is matched with the depth of the through hole.