An extension device suitable for a shield split launch fluid medium pipeline

Abstract

A kind of extension device suitable for shield split starting fluid medium pipeline, including inner limiting rod, outer limiting rod, bottom disc and spherical compensator, outer limiting rod includes bottom horizontal arrangement and presents circular ray distribution square steel pipe, vertical square steel pipe on outer circumference and the square steel pipe of outer circumference square steel pipe top circle, bottom square steel pipe upper side is welded with inner limiting rod, bottom square steel pipe end is welded with spherical compensator, multiple inner limiting rods are inclined to set, and the top of inner limiting rod is welded together, bottom disc is the form of roller slewing bearing, bottom disc inner ring is welded with the bottom of outer limiting rod, the pipeline extension of the present application is wound in the mode of rotation to reach the split starting stage, change the pipeline extension mode of traditional site stacking, manual dragging, by adopting the mode of connecting spherical compensator at pipeline access end, the pipeline twisting problem in pipeline rotation extension mode is solved.

Description

Technical Field

[0001] This invention relates to the field of shield tunneling split-type launching construction technology, and in particular to an extension device for a fluid medium pipeline suitable for shield tunneling split-type launching. Background Technology

[0002] Shield tunneling is widely used in subway construction due to its high construction safety, minimal impact on the surrounding environment, fast tunneling speed, and high degree of mechanization. However, with the continuous development of my country's social economy and the influence of urban planning, the sites available for construction operations in urban centers are becoming increasingly limited. Therefore, many shield tunneling launch shaft sites cannot meet the requirements for launching shields as a whole. Meanwhile, segmented launching can reduce the size of the shield tunneling launch shaft, lower project costs, reduce land acquisition requirements, and save significant investment, resulting in clear social and economic benefits.

[0003] During the initial launch phase, the launch speed of the tunnel boring machine (TBM) in sections was slower than that of the entire machine. One reason for this was that extending the pipelines required a significant amount of time. During the initial launch phase, except for the No. 1 trolley which was underground, all other trolleys were located in the working shaft. This resulted in a large number of pipelines, such as grouting pipes and grease pipes, accumulating and being placed haphazardly on the site. When extending them, they had to be manually dragged along with the TBM. The pipelines were numerous, heavy, and thick, making folding them difficult and greatly impacting construction efficiency. They were also prone to breakage. Summary of the Invention

[0004] This invention aims to solve the problem of time-consuming and labor-intensive pipeline extension during the split-type initial construction of shield tunnels, and proposes an extension device suitable for fluid medium pipelines during the split-type initial construction of shield tunnels.

[0005] The technical solution adopted in this invention:

[0006] An extension device for a split-type starting fluid medium pipeline in a tunnel boring machine includes an inner limiting rod, an outer limiting rod, a chassis, and a spherical compensator. The outer limiting rod includes a square steel tube with a horizontally arranged bottom and a circular radial distribution, a square steel tube with a vertical arrangement on the outer circumference, and a circular steel tube forming a circle at the top of the square steel tubes on the outer circumference. The upper side of the bottom square steel tube is welded to the inner limiting rod, and the end of the bottom square steel tube is welded to the spherical compensator. Multiple inner limiting rods are arranged at an angle, and the tops of the inner limiting rods are welded together. The chassis is a roller-type slewing bearing, including an inner chassis ring, an outer chassis ring, and a chassis roller plate that rotatably connects the inner chassis ring and the outer chassis ring. The bottom of the inner chassis ring is welded to the outer limiting rod, and a base is placed under the outer chassis ring before it is placed on the bottom plate of the working shaft.

[0007] The inner limiting rod is made of steel pipe, and an inner limiting rod is welded to the bottom square steel pipe of each outer limiting rod.

[0008] The height of the base is greater than the diameter of the pipeline.

[0009] The spherical compensator includes a spherical compensator housing end and a spherical compensator ball end that can rotate relative to each other.

[0010] The lower part of the inner ring of the chassis is fitted inside the chassis roller disc, and the chassis roller disc is fitted on the upper part of the outer ring of the chassis.

[0011] The spherical compensator housing is welded to the square steel tube at the bottom of the outer limiting rod.

[0012] The beneficial effects of the present invention are as follows: The present invention uses a method of winding and rotating a thicker fluid pipeline to achieve pipeline extension in the initial stage of the split-type extension, which changes the traditional method of pipeline extension that uses site stacking and manual dragging. By using a spherical compensator connected at the pipeline access end, the pipeline torsion problem in the pipeline rotation extension method is solved. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the pipeline layout of the present invention.

[0015] Figure 3 This is a schematic diagram of the chassis structure of the present invention.

[0016] Figure 4 This is an exploded view of the chassis structure of the present invention.

[0017] Figure 5 This is a schematic diagram of the spherical compensator structure of the present invention.

[0018] Figure 6 This is a schematic diagram of the connection of the spherical compensator of the present invention.

[0019] Figure 7 This is a top view of the chassis piping connection of the present invention.

[0020] Wherein: 1-Pipeline; 2-Inner limit rod; 3-Outer limit rod; 4-Base; 5-Pipeline fluid inlet; 6-Pipeline fluid outlet; 7-Chassis; 8-Chassis inner ring; 9-Chassis outer ring; 10-Chassis roller plate; 11-Spherical compensator; 12-Spherical compensator housing end; 13-Spherical compensator spherical end. Detailed Implementation

[0021] An extension device for a split-type starting fluid medium pipeline in a tunnel boring machine (TBM) includes an inner limiting rod 2, an outer limiting rod 3, a chassis 7, and a spherical compensator 11. The outer limiting rod 3 comprises a square steel tube horizontally arranged in a circular radial pattern at its bottom, a square steel tube vertically arranged on its outer circumference, and a circular steel tube forming a circle around the top of the outer circumference square steel tubes. The outer limiting rod 3 is used for lateral and bottom restriction of the pipeline 1. The upper side of the bottom square steel tube is welded to the inner limiting rod 2, and the end of the bottom square steel tube is welded to the spherical compensator 11. The spherical compensator 11 includes a rotatable spherical compensator housing end 12 and a spherical compensator ball end 13. The spherical compensator housing end 12 is welded to the square steel tube at the bottom of the outer limiting rod 3. The pipeline 1... The lower end passes through the middle of the inner limiting rod 2. The lower end of the pipeline 1 is connected to the end 12 of the spherical compensator housing through a flange. The pipeline fluid inlet 5 is connected to the spherical end 13 of the spherical compensator through a flange. Multiple inner limiting rods 2 are set at an angle, and the tops of the inner limiting rods 2 are welded together. The inner limiting rods 2 are used to internally limit the pipeline 1. The chassis 7 is a roller-type slewing bearing, including an inner chassis ring 8, an outer chassis ring 9, and a chassis roller plate 10 that rotatably connects the inner chassis ring 8 and the outer chassis ring 9. The bottom of the inner chassis ring 8 is welded to the outer limiting rod 3. The base 4 is placed under the outer chassis ring 9 and then placed on the bottom plate of the working well. The height of the base 4 is higher than the diameter of the pipeline 1 to ensure the access of the pipeline fluid inlet 5.

[0022] The inner limiting rod 2 is made of steel pipe, and an inner limiting rod 2 is welded to each bottom square steel pipe of the outer limiting rod 3. The inner limiting rod 2 is used to restrict the inside of the pipeline 1, and the outer limiting rod 3 is used to restrict the bottom and outside of the pipeline 1.

[0023] The lower part of the inner ring 8 of the chassis is sleeved on the inner side of the chassis roller plate 10, and the chassis roller plate 10 is sleeved on the upper part of the outer ring 9 of the chassis. In this way, the inner ring 8 and the outer ring 9 of the chassis can rotate relative to each other. The inner ring 8 of the chassis can rotate with the spherical compensator housing end 12, the inner limit rod 2 and the outer limit rod 3.

[0024] In application, pipeline 1 is distributed as follows: First, the pipeline 1 required for the initial stage is wound sequentially upwards around the bottom end of the inner limiting rod 2, with the upper part being the pipeline fluid outlet 6. The lower end of pipeline 1 passes through the middle of the inner limiting rod 2, and the lower end of pipeline 1 is connected to the spherical compensator housing end 12 through a flange. When pipeline 1 is extended, by pulling the pipe from the direction of the pipeline fluid outlet 6, pipeline 1, the spherical compensator housing end 12, and the outer limiting rod 3 rotate with the inner ring 8 of the chassis. The pipeline fluid inlet 5 is connected to the spherical end 13 of the spherical compensator through a flange. The pipeline 1 section at the pipeline fluid inlet 5 does not rotate with the spherical end 13 of the spherical compensator, ensuring that the pipeline fluid inlet 5 will not twist during the extension of pipeline 1. After the shield tunneling is completed, the flange connection can be removed to disconnect the connection between pipeline 1 and the pipeline extension device, and the pipeline extension device can be removed.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An extension device for a split-type starting fluid medium pipeline in a tunnel boring machine, characterized in that, The system includes an inner limit rod (2), an outer limit rod (3), a chassis (7), and a spherical compensator (11). The outer limit rod (3) includes a square steel pipe with a horizontal bottom and a circular radial distribution, a square steel pipe with a vertical outer circumference, and a circular steel pipe with a circular top. The upper side of the bottom square steel pipe is welded to the inner limit rod (2), and the end of the bottom square steel pipe is welded to the spherical compensator (11). Multiple inner limit rods (2) are inclined and the tops of the inner limit rods (2) are welded together. The chassis (7) is a roller-type rotary bearing, including an inner chassis ring (8), an outer chassis ring (9), and a chassis roller plate (10) that rotatably connects the inner chassis ring (8) and the outer chassis ring (9). The inner chassis ring (8) is welded to the bottom of the outer limit rod (3). The outer chassis ring (9) is placed on the bottom plate of the working well after a base (4) is placed under it.

2. The extension device for the starting fluid medium pipeline of a shield tunneling machine according to claim 1, characterized in that, The inner limiting rod (2) is made of steel pipe, and an inner limiting rod (2) is welded to each bottom square steel pipe of the outer limiting rod (3).

3. The extension device for the starting fluid medium pipeline of a shield tunneling machine according to claim 1, characterized in that, The height of the base (4) is higher than the diameter of the pipeline (1).

4. The extension device for the starting fluid medium pipeline of a shield tunneling machine according to claim 1, characterized in that, The spherical compensator (11) includes a spherical compensator housing end (12) and a spherical compensator ball end (13) that can rotate relative to each other.

5. The extension device for the starting fluid medium pipeline of a shield tunneling machine according to claim 1, characterized in that, The lower part of the inner ring (8) of the chassis is sleeved on the inner side of the chassis roller plate (10), and the chassis roller plate (10) is sleeved on the upper part of the outer ring (9) of the chassis.

6. The extension device for the starting fluid medium pipeline of a shield tunneling machine according to claim 4, characterized in that, The spherical compensator housing end (12) is welded to the square steel tube at the bottom of the outer limit rod (3).

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