Double-hinge-joint shield body structure

Abstract

The utility model discloses a double-hinged shield body structure which comprises a shield part, the shield part is composed of a front shield, a tail shield and a hinged shield body, the front shield and the tail shield are symmetrically arranged along the axis, the hinged shield body is arranged on the opposite sides of the front shield and the tail shield, and a plurality of front hinged ring parts are installed on the left side of the inner side of the hinged shield body. A plurality of front hinged ring parts are installed on the right side of the inner side of the hinged shield body, a plurality of rear hinged ring parts are installed on the right side of the inner side of the hinged shield body, the front hinged ring parts and the rear hinged ring parts are symmetrically assembled on the inner side of the hinged shield body along the axis, and the front hinged ring parts and the rear hinged ring parts which are horizontally arranged are installed in opposite directions. According to the scheme, installation between the two sets of oil cylinder parts in the hinged shield body is reduced, the structure is compact, and safety is high; the front hinged ring part and the rear hinged ring part are both mounted on the hinged shield body, so that the turning angle of the shield part is increased, and the turning radius is reduced; meanwhile, the structure is simple, and installation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield construction, in particular to a double-hinged shield structure. Background Art

[0002] With the acceleration of urbanization, underground space development is increasing. As a key infrastructure project, tunnel construction technology and equipment selection are becoming increasingly important. Shield machines, as highly efficient tunnel boring equipment, are widely used in underground projects such as subways and highway tunnels. However, in actual construction, the shield machine often needs to make sharp turns, especially when the tunnel path design includes a large number of small-radius curves. This places higher demands on the shield machine's turning capabilities.

[0003] Traditional shield machines are typically equipped with an articulated structure to achieve a certain degree of turning capability. However, shield machines with a single articulated structure often exhibit excessive turning radius and insufficient flexibility when faced with a small turning radius, which limits their application in certain construction conditions. To overcome this limitation, the industry has begun exploring and applying multi-articulated structure designs. Utility Model Content

[0004] The utility model aims to provide a double-hinged shield structure to solve the technical problems of the traditional shield machine proposed in the background art, namely, excessively large turning radius, insufficient flexibility and high structural complexity in small turning radius construction.

[0005] To achieve the above-mentioned object, the specific technical solution of the present invention is as follows: a double-hinged shield structure, comprising a shield portion, wherein the shield portion is composed of a front shield and a rear shield symmetrically arranged along an axis, and a hinged shield body arranged on opposite sides of the front shield and the rear shield;

[0006] A plurality of front hinged rings are mounted on the left side of the inner side of the hinged shield body, and a plurality of rear hinged rings are mounted on the right side of the inner side of the hinged shield body. The front hinged rings and the rear hinged rings are symmetrically mounted on the inner side of the hinged shield body along an axis, wherein the horizontally arranged front hinged rings and the rear hinged rings are mounted in opposite directions.

[0007] At the same time, oil cylinder parts are symmetrically installed along the axis at the left and right ends of the outer surface of the articulated shield body. The two adjacent oil cylinder parts are movably installed with the front shield, tail shield and articulated shield body respectively through the movable assembly components set on their outer surfaces.

[0008] Preferably, the front hinged ring is movably mounted on the right side of the front shield away from the side of the hinged shield body. When the front hinged ring is bent, it is sealed and connected to the front shield, resulting in an angle change.

[0009] Preferably, the side of the rear hinged ring away from the hinged shield body is movably mounted to the left side of the tail shield. When the rear hinged ring is bent, the rear hinged ring is sealed and connected to the tail shield shell, resulting in an angle change.

[0010] Preferably, a cutterhead for excavation is rotatably mounted on the left side of the shield portion.

[0011] Preferably, a piston rod is installed in the output end direction of the oil cylinder part, wherein one end of the inner surface of the oil cylinder part is connected to a sealing gasket.

[0012] Preferably, the movable assembly component includes a mounting support plate, wherein the mounting support plates are multiple and are respectively installed on the opposite side of the piston rod and the cylinder part, and a rotating shaft is installed on the opposite side of two adjacent mounting support plates, wherein the surfaces of the two rotating shafts are rotatably connected with a connecting seat.

[0013] Preferably, opposite sides of two adjacent adapters are fastened with a front fixing seat 1 and a rear fixing seat 1 respectively by bolts.

[0014] Preferably, the movable assembly component includes two sets of movable ball heads arranged on opposite sides of the cylinder portion and the piston rod, wherein the opposite sides of the two movable ball heads are connected to the mounting rods.

[0015] Preferably, a ball seat is provided on one side of the movable ball head, wherein a ball groove is provided on the surface of the ball seat, and the mounting rod is rotatably arranged in the inner cavity of the ball groove and is in a movably connected state with the ball seat.

[0016] Preferably, the opposite sides of the two adjacent ball grooves are integrally connected with the front fixing seat 2 and the rear fixing seat 2.

[0017] The double-hinged shield structure of the utility model has the following advantages:

[0018] This double-hinged shield structure utilizes a front hinged ring portion and a rear hinged ring portion to provide the shield portion with greater turning performance, that is, the shield portion can turn at a smaller turning radius, thereby improving the turning performance of the shield portion;

[0019] By changing the installation position of the rear hinged ring, the rear hinged ring and the tail shield shell can be sealed and turned. Through the telescopic effect of the two sets of oil cylinders, the front shield, tail shield and hinged shield body can change the angle more greatly, making a small radius turn. At the same time, the installation distance between the two sets of oil cylinders on the hinged shield body is reduced, making the internal structure of the shield compact and highly safe.

[0020] When the shield needs to turn, the two sets of cylinders in the movable assembly assembly are used to bend the front and rear shields to make the turn. The front and rear hinged rings are both installed on the hinged shield body, which can ensure the flexibility and convenience of the shield. The simple structure is easy to operate, while also ensuring the stability and safety of the shield, allowing the shield to move forward smoothly under complex geological conditions. This can improve the efficiency of the shield. At the same time, the installation gap between the two sets of cylinders is reduced, which reduces the space of the hinged shield body and makes the internal structure of the shield tighter.

[0021] Finally, since the installation space between the two sets of cylinder parts inside the articulated shield body is reduced, the structure is compact and the safety is high; and the front articulated ring part and the rear articulated ring part are both installed on the articulated shield body, the turning angle of the shield part is increased and the turning radius is reduced. At the same time, the structure is simple and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the overall explosion structure of the utility model;

[0025] Figure 3 This is a schematic structural diagram of a drinking basin of the present utility model.

[0026] Explanation of the marks in the figure: 1. Shield part; 10. Front shield; 11. Tail shield; 12. Articulated shield body; 13. Cutter head; 2. Front articulated ring part; 3. Rear articulated ring part; 4. Cylinder part; 41. Piston rod; 5. Mounting support plate; 51. Rotating shaft; 52. Adapter seat; 53. Front fixed seat one; 54. Rear fixed seat one; 6. Movable ball head; 61. Mounting rod; 62. Ball seat; 63. Ball groove; 64. Front fixed seat two; 65. Rear fixed seat two. DETAILED DESCRIPTION

[0027] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0031] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0032] In order to better understand the purpose, structure and function of the present invention, the double-hinged shield structure of the present invention is further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1-Figure 3 As shown, the present invention provides a double-hinged shield structure, comprising a shield portion 1, wherein the shield portion 1 comprises a front shield 10 and a rear shield 11 symmetrically arranged along an axis, and a hinged shield body 12 arranged on opposite sides of the front shield 10 and the rear shield 11. The front shield 10, the rear shield 11, and the hinged shield body 12 cooperate to form a shield body; a cutterhead 13 for excavation is rotatably mounted on the left side of the shield portion 1;

[0034] A plurality of front hinged ring portions 2 are installed on the left side of the inner side of the hinged shield body 12. At the same time, a plurality of rear hinged ring portions 3 are installed on the right side of the inner side of the hinged shield body 12. The front hinged ring portions 2 and the rear hinged ring portions 3 are used in conjunction with each other. The front hinged ring portions 2 and the rear hinged ring portions 3 are symmetrically assembled on the inner side of the hinged shield body 12 along the axis, wherein the horizontally arranged front hinged ring portions 2 and the rear hinged ring portions 3 are installed in opposite directions.

[0035] Sealing sheets are fixedly bonded to the surfaces of the front hinged ring portion 2 and the rear hinged ring portion 3. The side of the front hinged ring portion 2 away from the hinged shield body 12 is movably mounted on the right side of the front shield 10. When the shield portion 1 needs to turn during construction, the front hinged ring portion 2 is sealed and connected to the front shield 10 when it bends, resulting in a change in angle.

[0036] The side of the rear hinged ring portion 3 away from the hinged shield body 12 is movably mounted to the left side of the tail shield 11. When the shield portion 1 needs to turn during construction, the rear hinged ring portion 3 bends, and a sealed connection is established between the rear hinged ring portion 3 and the shell of the tail shield 11, resulting in an angle change.

[0037] The front hinge ring 2 and the rear hinge ring 3 are mounted on both ends of the surface of the hinged shield body 12, and the other ends of the front hinge ring 2 and the rear hinge ring 3 are connected to the front shield 10 and the rear shield 11, respectively. By adjusting the front hinge ring 2 and the rear hinge ring 3 to be installed oppositely on the hinged shield body 12, the shield unit 1 can provide greater turning performance, that is, the shield unit 1 can turn within a smaller turning radius, thereby improving the turning performance of the shield unit 1. When the shield unit 1 needs to turn, the two sets of cylinders 4 bend the front shield 10 and the rear shield 11 to achieve the turn.

[0038] The front hinged ring 2 and the rear hinged ring 3 are both mounted on the hinged shield 12, ensuring the flexibility and convenience of the shield 1. The simple structure facilitates operation while also ensuring the stability and safety of the shield 1, allowing it to advance smoothly under complex geological conditions. This improves the efficiency of the shield 1. Furthermore, the gap between the two sets of cylinders 4 is reduced, shrinking the space around the hinged shield 12 and making the internal structure of the shield 1 compact.

[0039] By changing the installation position of the rear hinged ring portion 3, the rear hinged ring portion 3 and the shell of the tail shield 11 can be sealed and turned. Through the telescopic effect of the two groups of cylinder parts 4, the front shield 10, the tail shield 11 and the hinged shield body 12 can undergo a larger angle change and perform a small radius turn. At the same time, the installation distance between the two groups of cylinder parts 4 on the hinged shield body 12 is reduced, making the internal structure of the shield part 1 compact and highly safe.

[0040] At the same time, the oil cylinder parts 4 are symmetrically installed along the axis at the left and right ends of the outer surface of the hinged shield body 12, wherein there are multiple oil cylinder parts 4, and the multiple oil cylinder parts 4 are symmetrical in pairs;

[0041] A piston rod 41 is installed at the output end of the cylinder part 4, wherein one end of the inner surface of the cylinder part 4 is connected to a sealing gasket. When the piston rod 41 slides, its surface makes sealing sliding contact with the connection of the cylinder part 4.

[0042] The oil cylinder 4, also known as the hydraulic cylinder, is a type of actuator in the hydraulic system that converts hydraulic energy into mechanical energy for linear reciprocating motion or swinging. In addition to the above, the oil cylinder 4 and piston rod 41 also consist of the following main parts: cylinder body, piston, piston rod body, seal, end cap, buffer device, exhaust device, and guide sleeve.

[0043] The cylinder body is the main component of the oil cylinder 4. It is typically a high-strength tubular structure with a smooth interior to reduce friction during piston movement. The piston is mounted within the oil cylinder 4 and connected to the piston rod 41. The piston seals against the inner wall of the cylinder through a sealing ring on the piston, dividing the cylinder into two independent chambers.

[0044] One end of the piston rod 41 is connected to the piston, and the other end extends out of the cylinder body for connecting to an external device that needs to do work. The piston rod 41 is usually specially treated to improve its hardness and wear resistance.

[0045] The seals include piston seals, guide rings and piston rod 41 seals, etc., which are used to prevent hydraulic oil from leaking from the high-pressure area to the low-pressure area and ensure good sealing between the piston rod 41 and the cylinder body.

[0046] End caps are installed at each end of the cylinder body to secure the piston rod 41 and provide mounting interfaces. These caps typically have inlet and outlet ports for connecting to other components of the hydraulic system. A buffer is an optional component that slows the piston at the end of its stroke to prevent impact damage to the cylinder body.

[0047] The exhaust device is a vent included in some cylinder parts 4 designs to exhaust the air in the cylinder body after initial use or maintenance to ensure the normal operation of the cylinder part 4. The guide sleeve is located at the end where the piston rod 41 passes through, and is used to guide and support the piston rod 41, reduce wear and maintain linear motion.

[0048] The cylinder 4 can be single-acting, extending the piston rod 41 solely through the pressure of the hydraulic oil, while retraction relies on an external force such as gravity or a spring. Alternatively, it can be double-acting, controlling the extension and retraction of the piston rod 41 by changing the direction of the hydraulic oil. The design and dimensions of the cylinder 4 may vary depending on the application.

[0049] Two adjacent oil cylinder parts 4 are movably mounted on the front shield 10, the rear shield 11 and the hinged shield body 12 respectively through movable assembly components provided on the outer surfaces of the oil cylinder parts 4.

[0050] The first embodiment of the movable assembly component is composed of a mounting support plate 5, a rotating shaft 51 and an adapter seat 52, wherein the mounting support plates 5 are multiple and are respectively mounted on the opposite sides of the piston rod 41 and the cylinder part 4. Specifically, there are two mounting support plates 5 on a single cylinder part 4, and one mounting support plate 5 is mounted on the fixed end of the cylinder part 4, and the other mounting support plate 5 is mounted on the protruding end of the piston rod 41, and is respectively connected to the rotating shaft 51. The rotating shafts 51 are mounted on the opposite sides of the two adjacent mounting support plates 5, and the adapter seats 52 are rotatably connected to the surfaces of the two rotating shafts 51.

[0051] The opposite sides of the two adjacent adapter seats 52 are respectively fastened with a front fixing seat 53 and a rear fixing seat 54 by bolts, wherein the front fixing seat 53 and the rear fixing seat 54 located on the left and right sides of the oil cylinder part 4 on the left side of the hinged shield body 12 are respectively connected to the end where the front shield 10 and the hinged shield body 12 are connected, while the front fixing seat 53 and the rear fixing seat 54 located on the left and right sides of the oil cylinder part 4 on the right side of the hinged shield body 12 are respectively connected to the end where the hinged shield body 12 and the tail shield 11 are connected.

[0052] like Figure 2 and Figure 3 , which is a second embodiment of the movable assembly component, the movable assembly component includes two sets of movable ball heads 6 arranged on opposite sides of the cylinder portion 4 and the piston rod 41, wherein the opposite sides of the two movable ball heads 6 are connected to mounting rods 61, and the two mounting rods 61 are respectively connected to the fixed end of the cylinder portion 4 and the extended end of the piston rod 41;

[0053] A ball seat 62 is provided on one side of the movable ball head 6, wherein a ball groove 63 is provided on the surface of the ball seat 62, and the mounting rod 61 is rotatably disposed in the inner cavity of the ball groove 63 and is in a movable connection with the ball seat 62;

[0054] The opposite sides of the two adjacent ball grooves 63 are respectively integrally connected with a front fixing seat 2 64 and a rear fixing seat 2 65, wherein the rear fixing seat 2 65 and the front fixing seat 2 64 located at both ends of the oil cylinder portion 4 on the left side of the hinged shield body 12 are respectively connected to the surface of the front shield 10 and the hinged shield body 12, while the rear fixing seat 2 65 and the rear fixing seat 2 65 located at both ends of the oil cylinder portion 4 on the right side of the hinged shield body 12 are respectively connected to the opposite side of the hinged shield body 12 and the tail shield 11.

[0055] The working principle of a double-articulated shield structure: The front articulated ring portion 2 and the rear articulated ring portion 3 are used to provide the shield portion 1 with greater turning performance, that is, the shield portion 1 can turn within a smaller turning radius, thereby improving the turning performance of the shield portion 1. When the shield portion 1 needs to turn, the two sets of cylinder portions 4 in the movable assembly state are used to bend the front shield 10 and the rear shield 11 to turn; and the front articulated ring portion 2 and the rear articulated ring portion 3 are both installed on the articulated shield body 12, which can ensure the flexibility and convenience of the shield portion 1. The structure is simple and easy to operate, while also ensuring the stability and safety of the shield portion 1, allowing the shield portion 1 to move smoothly under complex geological conditions. It can improve the efficiency of the shield portion 1. At the same time, the installation gap between the two groups of oil cylinder parts 4 is reduced, the space of the hinged shield body 12 is shortened, and the internal structure of the shield part 1 is made compact; and by changing the installation position of the rear hinged ring part 3, the rear hinged ring part 3 and the shell of the tail shield 11 are made to perform a sealed turn, and through the telescopic effect of the two groups of oil cylinder parts 4, the front shield 10, the tail shield 11 and the hinged shield body 12 undergo a larger angle change, and perform a small radius turn. At the same time, the installation distance between the two groups of oil cylinder parts 4 on the hinged shield body 12 is reduced, so that the internal structure of the shield part 1 is compact and the safety is high.

[0056] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A double-hinged shield structure, characterized by: The shield portion (1) comprises a front shield (10) and a rear shield (11) symmetrically arranged along an axis, and a hinged shield body (12) arranged on opposite sides of the front shield (10) and the rear shield (11); A plurality of front hinged rings (2) are mounted on the left side of the inner side of the hinged shield (12), and a plurality of rear hinged rings (3) are mounted on the right side of the inner side of the hinged shield (12), wherein the front hinged rings (2) and the rear hinged rings (3) are symmetrically mounted on the inner side of the hinged shield (12) along an axis, wherein the horizontally arranged front hinged rings (2) and the rear hinged rings (3) are mounted in opposite directions; At the same time, oil cylinder parts (4) are symmetrically installed along the axis at the left and right ends of the outer surface of the hinged shield body (12), and two adjacent oil cylinder parts (4) are movably installed with the front shield (10), the tail shield (11) and the hinged shield body (12) respectively through movable assembly components provided on their outer surfaces.

2. The double-hinged shield structure according to claim 1, characterized in that: The front hinged ring portion (2) is movably mounted on the right side of the front shield (10) at a side away from the hinged shield body (12). When the front hinged ring portion (2) is bent, it is sealed and connected to the front shield (10), resulting in an angle change.

3. The double-hinged shield structure according to claim 2, characterized in that: The side of the rear hinged ring portion (3) away from the hinged shield body (12) is movably mounted to the left side of the tail shield (11). When the rear hinged ring portion (3) is bent, a sealing connection is established between the rear hinged ring portion (3) and the shell of the tail shield (11), resulting in an angle change.

4. The double-hinged shield structure according to claim 3, characterized in that: A cutterhead (13) for excavation is rotatably mounted on the left side of the shield section (1).

5. The double-hinged shield structure according to claim 4, characterized in that: A piston rod (41) is installed in the output direction of the oil cylinder part (4), wherein one end of the inner surface of the oil cylinder part (4) is connected to a sealing gasket.

6. The double-hinged shield structure according to claim 5, characterized in that: The movable assembly component includes a mounting support plate (5), wherein the mounting support plates (5) are multiple and are respectively mounted on opposite sides of the piston rod (41) and the oil cylinder portion (4), and a rotating shaft (51) is mounted on opposite sides of two adjacent mounting support plates (5), wherein the surfaces of the two rotating shafts (51) are rotatably connected to a transfer seat (52).

7. The double-hinged shield structure according to claim 6, characterized in that: The opposite sides of the two adjacent adapter seats (52) are respectively fastened with a front fixing seat (53) and a rear fixing seat (54) by bolts.

8. The double-hinged shield structure according to claim 5, characterized in that: The movable assembly component comprises two sets of movable ball heads (6) arranged on opposite sides of the oil cylinder portion (4) and the piston rod (41), wherein the opposite sides of the two movable ball heads (6) are connected to a mounting rod (61).

9. The double-hinged shield structure according to claim 8, characterized in that: A ball seat (62) is provided on one side of the movable ball head (6), wherein a ball groove (63) is provided on the surface of the ball seat (62), and the mounting rod (61) is rotatably arranged in the inner cavity of the ball groove (63) and is in a movable connection state with the ball seat (62).

10. The double-hinged shield structure according to claim 9, characterized in that: The opposite sides of the two adjacent ball grooves (63) are respectively integrally formed with a second front fixing seat (64) and a second rear fixing seat (65).

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