Spherical hinge joint suitable for sudden turning of shield tunneling machine

Abstract

The utility model discloses a spherical hinge suitable for sharp turning of a shield tunneling machine, which comprises a front shield, a spherical groove arranged inside the front shield, a spherical joint arranged inside the spherical groove, a spherical joint connected with a tail shield, a partition plate fixedly connected inside the spherical groove, a groove arranged inside the spherical joint, and a hydraulic oil cylinder arranged inside the groove. The spherical groove is formed in the front shield, the spherical joint is mounted in the spherical groove and connected with the tail shield, the spherical joint is stable in steering and high in adaptability, and the design allows the shield tunneling machine to realize a larger turning angle through multi-directional movement of the spherical joint when the shield tunneling machine needs to turn suddenly, so that the shield tunneling machine adapts to a smaller turning radius; and the design of the spherical joint can better disperse and absorb external pressure, so that the spherical joint can still keep stable performance in a high-pressure environment, and the overall stability and safety of the shield tunneling machine are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a spherical hinge suitable for sharp turns of shield machines. Background Art

[0002] With the rapid development of science and technology and the accelerating pace of urbanization, the development and utilization of underground space has become increasingly important. Against this backdrop, the shield machine, as an efficient, safe, and environmentally friendly tunnel boring machine, has gradually become an indispensable tool in underground engineering construction. It is not only widely used in the construction of large-scale infrastructure projects such as subway lines and highway and railway tunnels, but also plays an irreplaceable role in underground pipeline laying, integrated pipeline corridor construction, and other types of underground engineering.

[0003] However, with the widespread use of shield machines, construction environments and requirements have become more complex and diverse. In particular, for projects requiring tight turns, the traditional articulated structure of a shield machine is no longer sufficient. Due to design limitations, conventional articulated structures have relatively small turning angles and are unable to achieve tight turns. This not only limits the application scope of shield machines but also impacts construction efficiency and project quality.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] In response to the problems in the related art, the present invention proposes a spherical hinge suitable for sharp turns of a shield machine to overcome the above-mentioned technical problems existing in the existing related art.

[0006] To this end, the specific technical solutions adopted in this utility model are as follows:

[0007] A spherical hinge suitable for sharp turns of a shield machine includes a front shield, a spherical groove is provided inside the front shield, a spherical joint is provided inside the spherical groove, the spherical joint is connected to the tail shield, a partition is fixedly connected inside the spherical groove, a groove is provided inside the spherical joint, and a hydraulic cylinder is provided inside the groove.

[0008] Furthermore, both ends of the hydraulic cylinder are connected to the ear plates through hinge pins, the ear plates are fixedly connected to the mounting plates, and the two mounting plates are fixedly connected to the partition plate and the spherical joint respectively.

[0009] Furthermore, in order to achieve the steering of the spherical joint, the number of the grooves is two.

[0010] Furthermore, in order to prevent debris and water vapor from entering the shield machine and ensure the safe operation of internal mechanical components, a sealing ring is provided inside the spherical groove.

[0011] Furthermore, there are two sealing rings, and the sealing rings are made of rubber.

[0012] Furthermore, in order to clean the spherical joint during its rotation, a first annular frame is provided at the front end of the spherical groove, a second annular frame is provided on one side of the first annular frame, and a scraper is fixedly connected below the first annular frame and the second annular frame.

[0013] Furthermore, the scraper is made of polyurethane.

[0014] Furthermore, in order to disassemble the scraper and facilitate replacement of the scraper, the first annular frame is connected to the front shield through bolts.

[0015] Furthermore, a knife disc is provided in front of the front shield.

[0016] Furthermore, the number of hydraulic cylinders arranged between the partition plate and the spherical joint is two.

[0017] The beneficial effects of the utility model are:

[0018] (1) By providing a spherical groove inside the front shield, a spherical joint is installed in the spherical groove and connected to the tail shield. The spherical joint has stable steering and strong adaptability. This design allows the shield machine to achieve a larger turning angle through the multi-directional movement of the spherical joint when it needs to make a sharp turn, thereby adapting to a smaller turning radius and improving the application range of the equipment. In addition, the design of the spherical joint can better disperse and absorb external pressure. Therefore, under high-pressure environment, the spherical joint can still maintain stable performance, which not only improves the overall stability and safety of the shield machine, but also extends the service life of the equipment.

[0019] (2) By setting up a scraper, it can effectively fit the surface of the spherical joint and scrape off larger particles attached to it during the movement of the shield machine. This design can effectively keep the spherical joint clean and smooth, thereby ensuring that the shield machine always maintains a good operating condition during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a front view of a spherical hinge suitable for sharp turns of a shield machine according to an embodiment of the present utility model;

[0022] Figure 2This is a diagram of the internal structure of a spherical hinge suitable for a sharp turn of a shield machine according to an embodiment of the present utility model;

[0023] Figure 3 This is a connection diagram of a spherical hinged first annular frame suitable for a sharp turn of a shield machine according to an embodiment of the present utility model;

[0024] Figure 4 This is a connection diagram of a spherical articulated hydraulic cylinder suitable for sharp turns of a shield machine according to an embodiment of the utility model.

[0025] In the picture:

[0026] 1. Front shield; 2. Spherical groove; 3. Spherical joint; 4. Tail shield; 5. Partition; 6. Groove; 7. Hydraulic cylinder; 8. Hinge pin; 9. Ear plate; 10. Mounting plate; 11. Sealing ring; 12. First annular frame; 13. Second annular frame; 14. Scraper; 15. Bolt; 16. Cutter disc. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] According to an embodiment of the present utility model, a spherical hinge suitable for sharp turns of a shield machine is provided.

[0029] Example 1

[0030] like Figure 1-Figure 4As shown, according to the embodiment of the utility model, the spherical articulation suitable for sharp turns of the shield machine includes a front shield 1, a cutter head 16 is provided in front of the front shield 1, a spherical groove 2 is provided inside the front shield 1, a spherical joint 3 is provided inside the spherical groove 2, the spherical joint 3 is connected to the tail shield 4, a partition 5 is fixedly connected inside the spherical groove 2, a groove 6 is provided inside the spherical joint 3, the number of the grooves 6 is two, a hydraulic cylinder 7 is provided inside the groove 6, the number of the hydraulic cylinders 7 arranged between the partition 5 and the spherical joint 3 is two, the two ends of the hydraulic cylinder 7 are connected to the ear plate 9 by a hinge pin 8, the ear plate 9 is fixedly connected to the mounting plate 10, the two mounting plates 10 are fixedly connected to the partition 5 and the spherical joint 3 respectively, a sealing ring 11 is provided inside the spherical groove 2, and the constituent material of the sealing ring 11 is rubber, which can prevent debris from entering the spherical groove 2 and causing damage to the hydraulic cylinder 7 inside the spherical groove 2. With the above solution, when the shield machine needs to turn, the strokes of the hydraulic cylinders 7 on the left and right sides change differently, namely, the hydraulic cylinder 7 on one side extends, while the hydraulic cylinder 7 on the other side shortens. This differential stroke change causes the position of the ball joint 3 to shift left or right. As the connection point between the front shield 1 and the rear shield 4 of the shield machine, changes in the position of the ball joint 3 directly affect the angle of the front shield 1. When the position of the ball joint 3 shifts to one side, the angle of the front shield 1 changes accordingly, causing the shield machine to turn in that direction. This design allows the shield machine to precisely adjust the turning angle by accurately controlling the stroke changes of the hydraulic cylinder 7 when turning.

[0031] like Figure 1-Figure 4 As shown, a first annular frame 12 is provided at the front end of the spherical groove, and a second annular frame 13 is provided on one side of the first annular frame 12. A scraper 14 is fixedly connected below the first and second annular frames 12, 13. The scraper 14 is made of polyurethane. The first annular frame 12 is connected to the front shield 1 via bolts 15, which secure the scraper 14. With this solution, when the spherical joint 3 rotates, the scraper 14 effectively conforms to the surface of the spherical joint 3 and can scrape away particles adhering to the surface, ensuring the cleanliness of the spherical joint 3. Furthermore, the annular frame is detachable. If the scraper 14 becomes severely worn or its cleaning effectiveness degrades after extended use, the bolts 15 can be removed to remove the annular frame from the front shield 1, allowing for easy replacement. This detachable design not only improves the equipment's maintenance convenience, but also extends its service life and reduces maintenance costs.

[0032] In summary, with the aid of the above-mentioned technical solution of the present invention, by providing a spherical groove 2 within the front shield 1, a spherical joint 3 is installed within the spherical groove 2 and connected to the rear shield 4. The spherical joint 3 has stable steering and strong adaptability. This design allows the shield machine to achieve a larger turning angle through the multi-directional movement of the spherical joint 3 when it needs to make a sharp turn, thereby adapting to a smaller turning radius, thereby expanding the application range of the equipment. In addition, the design of the spherical joint 3 can better disperse and absorb external pressure, so that the spherical joint 3 can still maintain stable performance under high-pressure environments. This not only improves the overall stability and safety of the shield machine, but also extends the service life of the equipment. In addition, by providing a scraper 14, it can effectively adhere to the surface of the spherical joint 3 and scrape off larger particles attached to it during the movement of the shield machine. This design can effectively keep the spherical joint 3 clean and smooth, thereby ensuring that the shield machine always maintains a good operating condition during movement.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spherical hinge suitable for sharp turns of a shield machine, characterized in that: The invention comprises a front shield (1), wherein a spherical groove (2) is provided inside the front shield (1), a spherical joint (3) is provided inside the spherical groove (2), the spherical joint (3) is connected to the tail shield (4), a partition (5) is fixedly connected inside the spherical groove (2), a groove (6) is provided inside the spherical joint (3), and a hydraulic cylinder (7) is provided inside the groove.

2. The spherical hinge suitable for sharp turns of a shield machine according to claim 1, characterized in that: Both ends of the hydraulic cylinder (7) are connected to the ear plate (9) via a hinge pin (8), the ear plate (9) is fixedly connected to the mounting plate (10), and the two mounting plates (10) are fixedly connected to the partition plate (5) and the spherical joint (3), respectively.

3. The spherical hinge suitable for sharp turns of a shield machine according to claim 1, characterized in that: The number of the grooves (6) is two.

4. The spherical hinge suitable for sharp turns of a shield machine according to claim 1, characterized in that: A sealing ring (11) is provided inside the spherical groove (2).

5. The spherical hinge suitable for sharp turns of a shield machine according to claim 4, characterized in that: The number of the sealing rings (11) is two, and the constituent material of the sealing rings (11) is rubber.

6. The spherical hinge suitable for sharp turns of a shield machine according to claim 1, characterized in that: A first annular frame (12) is provided at the front end of the spherical groove (2), a second annular frame (13) is provided on one side of the first annular frame (12), and a scraper (14) is fixedly connected below the first annular frame (12) and the second annular frame (13).

7. The spherical hinge suitable for sharp turns of a shield machine according to claim 6, characterized in that: The scraper (14) is made of polyurethane.

8. The spherical hinge suitable for sharp turns of a shield machine according to claim 6, characterized in that: The first annular frame (12) is connected to the front shield (1) via bolts (15).

9. The spherical hinge suitable for a sharp turn of a shield machine according to claim 1, characterized in that: A knife disc (16) is provided in front of the front shield (1).

10. The spherical hinge suitable for a sharp turn of a shield machine according to claim 1, characterized in that: There are two hydraulic cylinders (7) arranged between the partition (5) and the spherical joint (3).

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