A shield machine jack arrangement for pre-buried channel segment assembly

Abstract

The utility model belongs to the technical field of shield machine parts, concretely relates to a shield machine jack arrangement structure of pre -buried channel pipe piece assembly. The arrangement structure includes ten groups of double -rooted advance oil cylinder jack and two groups of single -rooted advance oil cylinder jack, the arrangement structure divides shield machine into A, B, C, D, E and F area, ten groups of double -rooted advance oil cylinder jack and two groups of single -rooted advance oil cylinder jack annularly arrange in A, B, C, D, E and F area. The scheme is through the installation area is divided into ABCDEF 5 accurate segmentation, through the partition control, ensure that pre -buried channel block can be accurately installed to the tunnel design position, avoid the positioning deviation caused by the overall error accumulation of traditional method, improve the accuracy and reliability of the installation of electromechanical equipment, compared with the whole ring pre -buried, and the partition installation only needs to set up the channel in the key stress area (such as top), and the material consumption is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of tunnel boring machine components, specifically relating to a tunnel boring machine jack arrangement structure for pre-embedded channel segments. Background Technology

[0002] In the construction of rail transit tunnels, shield tunneling is widely used due to its advantages such as high efficiency, safety, and minimal impact on the surrounding environment. To meet the installation requirements of electromechanical equipment (such as overhead contact lines, pipelines, and cables) within the tunnel, traditional methods typically require drilling holes and inserting expansion bolts or chemical anchors after the shield segments are formed. However, this post-installation method has many drawbacks. Drilling may damage the concrete structure of the segments, even breaking internal reinforcing steel, affecting the overall load-bearing capacity and durability of the tunnel. On-site drilling and installation procedures are cumbersome, prolonging the construction period. Furthermore, working at height poses safety hazards. Later, problems such as loose bolts and corrosion frequently occur, requiring frequent maintenance and increasing operating costs. The dust and noise generated during drilling also harm the health of construction workers and the tunnel environment.

[0003] To address the aforementioned issues, the technology of pre-embedded contact wire channels in tunnel segments has emerged. This technology embeds the contact wire channels in the segments during the prefabrication stage, allowing for direct fixation of electromechanical components during later installation without the need for drilling. This significantly improves construction efficiency, reduces overall life-cycle costs, and ensures the integrity and durability of the tunnel structure. In recent years, this technology has been gradually promoted in subway projects in China.

[0004] However, for large-section shield tunnels, using full-ring pre-embedded channels would lead to material waste and soaring costs. Therefore, local block pre-embedding is usually adopted in engineering, with channels only pre-embedded in key areas of the tunnel segments. However, existing technologies suffer from insufficient assembly precision, making it difficult to ensure that the pre-embedded blocks are accurately positioned in the tunnel design location, affecting the installation accuracy and stress performance of subsequent electromechanical equipment. How to achieve high-precision sectional assembly of pre-embedded channels for large-section tunnel segments has become an urgent technical challenge to be solved. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one aspect of the present invention is to provide a shield machine jack arrangement structure for pre-embedded channel segment assembly. The arrangement structure includes ten sets of double-root propulsion cylinder jacks and two sets of single-root propulsion cylinder jacks. The arrangement structure divides the shield machine into areas A, B, C, D, E and F. The ten sets of double-root propulsion cylinder jacks and the two sets of single-root propulsion cylinder jacks are arranged in a ring in areas A, B, C, D, E and F.

[0006] Preferably, the double-push cylinder jack includes two push cylinder jacks, a double-push cylinder fixing plate, a double-push cylinder pad plate, and a support shoe.

[0007] Preferably, the single-push cylinder jack includes a single-push cylinder jack, a single-push cylinder fixing plate, a single-push cylinder pad plate, and a support shoe.

[0008] Preferably, zone A is centered on the center of the tunnel boring machine (TBM), extending 15° to the left and right from 0° directly above the ground; zone B is centered on the center of the TBM, extending 52° clockwise from zone A; zone C is centered on the center of the TBM, extending 64° clockwise from zone B; zone D is centered on the center of the TBM, extending 98° clockwise from zone C; zone E is centered on the center of the TBM, extending 64° clockwise from zone D; and zone F is centered on the center of the TBM, extending 52° clockwise from zone E.

[0009] Preferably, one set of double-root propulsion hydraulic cylinder jacks is respectively installed on the center line of the A and B areas, the C and D areas, the D and E areas, and the F and A areas.

[0010] Preferably, a set of single-push hydraulic cylinder jacks is set on the centerline of each of the B and C areas, and the E and F areas.

[0011] Preferably, one set of double-push hydraulic cylinder jacks is installed at the center of area A; two sets of double-push hydraulic cylinder jacks are evenly spaced between the double-push hydraulic cylinder jacks at the center line of areas A and B and the single-push hydraulic cylinder jacks at the center line of areas B and C; three sets of double-push hydraulic cylinder jacks are evenly spaced between the single-push hydraulic cylinder jacks at the center line of areas B and C and the double-push hydraulic cylinder jacks at the center line of areas C and D; and the double-push hydraulic cylinder jacks are evenly spaced between the double-push hydraulic cylinder jacks at the center line of areas C and D. Four sets of double-push hydraulic cylinder jacks are evenly spaced between the inlet cylinder jacks and the double-push hydraulic cylinder jacks along the center lines of zones D and E. Three sets of double-push hydraulic cylinder jacks are evenly spaced between the double-push hydraulic cylinder jacks along the center lines of zones D and E and zones E and F. Two sets of double-push hydraulic cylinder jacks are evenly spaced between the single-push hydraulic cylinder jacks along the center lines of zones E and F and zones F and A.

[0012] The beneficial effects of this utility model are as follows:

[0013] This solution divides the installation area of ​​the pre-embedded tunnel ducts for shield tunnel segments into five precise segments (A, B, C, D, E, F) and employs modular assembly technology. This achieves precise positioning and efficient construction of pre-embedded tunnel ducts in large-section tunnels, offering the following significant advantages: Zoned control ensures precise installation of the pre-embedded tunnel blocks to the designed tunnel location, avoiding positioning deviations caused by accumulated overall errors in traditional methods. This improves the accuracy and reliability of electromechanical equipment installation. Compared to full-ring pre-embedding, zoned installation only requires setting up tunnels in critical stress areas (such as the top), significantly reducing material usage and saving costs while maintaining structural performance. The modular segmented design makes the assembly process more flexible, reducing adjustment time, accelerating shield tunneling speed, shortening the construction period, avoiding segment damage caused by drilling, ensuring the overall strength and durability of the tunnel, reducing post-maintenance needs, minimizing on-site drilling operations, reducing dust and noise pollution, protecting the health of construction personnel, and meeting green construction requirements.

[0014] This utility model solution is applicable to the construction of large-section shield tunnels. It can significantly improve economic benefits and construction efficiency while ensuring project quality, and has broad application value.

[0015] Additional aspects and advantages of this invention will become apparent from the description which follows, or may be learned by practice of this invention. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the jack arrangement structure of the tunnel boring machine of this utility model;

[0018] Figure 2 This is a schematic diagram of the double-root propulsion hydraulic cylinder jack structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the single-root propulsion hydraulic cylinder jack structure of this utility model;

[0020] The correspondence between the reference numerals and component names in the figure is as follows:

[0021] 1 is a double-push cylinder jack, 2 is a single-push cylinder jack, 11 is a push cylinder jack, 12 is a double-push cylinder fixing plate, 13 is a double-push cylinder pad plate, 14 is a support shoe, 22 is a single-push cylinder fixing plate, and 23 is a single-push cylinder pad plate. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] This utility model includes ten sets of double-root propulsion cylinder jacks 1 and two sets of single-root propulsion cylinder jacks 2. The arrangement structure divides the tunnel boring machine into zones A, B, C, D, E, and F. The ten sets of double-root propulsion cylinder jacks 1 and the two sets of single-root propulsion cylinder jacks 2 are arranged in a ring within zones A, B, C, D, E, and F. Zone A is centered on the center of the tunnel boring machine, with 0° to the left and right and 15° to the right. Zone B is centered on the center of the tunnel boring machine, with Zone A rotated 52° clockwise. Zone C is centered on the center of the tunnel boring machine, with Zone B rotated 64° clockwise. Zone D is centered on the center of the tunnel boring machine, with Zone C rotated 98° clockwise. Zone E is centered on the center of the tunnel boring machine, with Zone D rotated 64° clockwise. Zone F is centered on the center of the tunnel boring machine, with Zone E rotated 52° clockwise.

[0025] like Figure 1As shown, one set of double-push hydraulic cylinder jacks 1 is installed on the centerline of areas A and B, C and D, D and E, and F and A respectively; one set of single-push hydraulic cylinder jacks 2 is installed on the centerline of areas B and C, and E and F respectively. One set of double-push hydraulic cylinder jacks 1 is installed at the center of area A. Two sets of double-push hydraulic cylinder jacks 1 are evenly spaced between the double-push hydraulic cylinder jacks 1 and 2 on the centerline of areas B and C in area B. Three sets of double-push hydraulic cylinder jacks 1 are evenly spaced between the single-push hydraulic cylinder jacks 2 and 2 on the centerline of areas C and D in area C. The double-push hydraulic cylinder jacks 1 are evenly spaced between the single-push hydraulic cylinder jacks 2 and 2 on the centerline of areas C and D in area D. Four sets of double-push hydraulic cylinder jacks 1 are evenly spaced at the centerline of zones 1, 2, 3, and 4. The distance between the double-push hydraulic cylinder jacks 1 and the centerline of zones D and E in zone E is evenly spaced at the centerline of zones E and F. Two sets of double-push hydraulic cylinder jacks 1 are evenly spaced at the centerline of zones E and F in zone F.

[0026] like Figure 2 , 3 As shown, the double-push cylinder jack 1 includes two push cylinder jacks 11, a double-push cylinder fixing plate 12, a double-push cylinder pad plate 13, and a support shoe 14; the single-push cylinder jack 2 includes one push cylinder jack 11, a single-push cylinder fixing plate 22, a single-push cylinder pad plate 23, and a support shoe 14.

[0027] When the tunnel segments are partially pre-embedded channel segments, the segments are assembled starting from the bottom of the tunnel using hydraulic jacks in zones C, D, and E. Then, hydraulic jacks in zones B or F are used to install the middle segments. After the middle segments are assembled, hydraulic jacks in zone A are used to assemble the segments with pre-embedded channels directly above the tunnel. Finally, hydraulic jacks in zones B or F are used to install the capping block. The pressure of hydraulic jack 11 can be independently adjusted, and the extension speed is adjusted by a flow control valve. The front end of the piston rod of hydraulic jack 11 is connected to the support shoe 14 via a ball bearing and a disc spring, allowing the support shoe 14 to rotate freely under lateral force. The surface of the support shoe 14 and the hydraulic cylinder pad 13 ensure that the thrust is applied evenly and gently to the segments, preventing damage to the segments.

[0028] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A shield tunneling machine jack arrangement structure for pre-embedded channel segment assembly, characterized in that: The arrangement structure includes ten sets of double-root propulsion cylinder jacks (1) and two sets of single-root propulsion cylinder jacks (2). The arrangement structure divides the tunnel boring machine into areas A, B, C, D, E and F. The ten sets of double-root propulsion cylinder jacks (1) and two sets of single-root propulsion cylinder jacks (2) are arranged in a ring in areas A, B, C, D, E and F. Zone A is defined as follows: with the center of the tunnel boring machine as the center, extending 15° to the left and right from 0° directly above the ground. Zone B is defined as follows: with the center of the tunnel boring machine as the center, extending 52° clockwise from Zone A. Zone C is defined as follows: with the center of the tunnel boring machine as the center, extending 64° clockwise from Zone B. Zone D is defined as follows: with the center of the tunnel boring machine as the center, extending 98° clockwise from Zone C. Zone E is defined as follows: with the center of the tunnel boring machine as the center, extending 64° clockwise from Zone D. Zone F is defined as follows: with the center of the tunnel boring machine as the center, extending 52° clockwise from Zone E. One set of double-root propulsion hydraulic cylinder jacks (1) is installed on the centerline of A and B, C and D, D and E, and F and A respectively. One set of single-push hydraulic cylinder jacks (2) is installed on the center line of each of the B and C, E and F areas. One set of double-push hydraulic cylinder jacks (1) is installed at the center of area A. Two sets of double-push hydraulic cylinder jacks (1) are evenly spaced between the double-push hydraulic cylinder jacks (1) at the center line of areas AB and the single-push hydraulic cylinder jacks (2) at the center line of areas B and C. Three sets of double-push hydraulic cylinder jacks (1) are evenly spaced between the single-push hydraulic cylinder jacks (2) at the center line of areas B and C and the double-push hydraulic cylinder jacks (1) at the center line of areas C and D. Four sets of double-root propulsion hydraulic cylinder jacks (1) are evenly spaced between the top (1) and the center lines of the D and E zones. Three sets of double-root propulsion hydraulic cylinder jacks (1) are evenly spaced between the center lines of the D and E zones and the center lines of the E and F zones. Two sets of double-root propulsion hydraulic cylinder jacks (1) are evenly spaced between the center lines of the E and F zones and the center lines of the F and A zones.

2. The shield machine jack arrangement structure for pre-embedded channel segment assembly according to claim 1, characterized in that: The double-root propulsion cylinder jack (1) includes two propulsion cylinder jacks (11), a double-root propulsion cylinder fixing plate (12), a double-root propulsion cylinder pad plate (13), and a support shoe (14).

3. The shield machine jack arrangement structure for pre-embedded channel segment assembly according to claim 1, characterized in that: The single-push cylinder jack (2) includes a single-push cylinder jack (11), a single-push cylinder fixing plate (22), a single-push cylinder pad plate (23), and a support shoe (14).

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