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KR-20260000623-U - ARTICULATED CONNECTION JOINT BETWEEN STRUCTURAL ELEMENTS OF A SUPPORT CENTRING OF AN EXCAVATION

KR20260000623UKR 20260000623 UKR20260000623 UKR 20260000623UKR-20260000623-U

Abstract

The articulated connection joint between the structural elements of the support centering of the excavation comprises two joint parts (2, 3) articulated by an articulated pin (4) that allows mutual rotation of the two joint parts (2, 3) from an open configuration to a closed configuration. The two joint parts each comprise a base wall (8; 20) and at least two side walls (9, 10; 26, 27) extending from the individual base walls (8; 20). Blocking members (12, 15, 16, 34) are provided at the joint (1) to irreversibly block the joint (1) in a closed configuration. The two joint parts (2, 3) are manufactured from a metal material by casting.

Inventors

  • 보노미, 크리스티아노
  • 파치올리, 니콜라

Assignees

  • 마카페리 터널링 에스알엘

Dates

Publication Date
20260512
Application Date
20251104
Priority Date
20241105

Claims (6)

  1. As an articulated connection joint between structural elements of the support centering of the excavation, It includes two joint parts (2, 3), said two joint parts (2, 3) are articulated by an articulation pin (4) that allows mutual rotation of the two joint parts (2, 3) from an open configuration to a closed configuration, and The two joint portions each include a base wall (8; 20) and at least two side walls (9, 10; 26, 27) extending from the respective base walls (8; 20), and The joint (1) is provided with blocking members (12, 15, 16, 34) for irreversibly blocking the joint in the closed configuration, and The two joint parts (2, 3) are manufactured from metal material by casting, Articulated connecting joint.
  2. In Article 1, At least each base wall (8; 20) is connected to the individual side walls (9, 10; 26, 27) without any sharp edges, Articulated connecting joint.
  3. In Article 1 or Article 2, Each side wall (9, 10; 26, 27) includes a thick portion (13; 30) in the area where a hole (12; 32) for the passage of a blocking member (15, 16) is formed, and Each thick portion is connected to the individual side walls (9, 10; 26, 27) without any sharp edges, Articulated connecting joint.
  4. In any one of paragraphs 1 to 3, The joint portion (3) includes a member portion (22) connected to the base wall (20) and the side walls (26, 27), and A through hole (24) is formed in the member part (22) to allow the passage of the joint pin (4), and The above member portion (22) is connected to the base wall (20) and the side walls (26, 27) without any sharp edges, Articulated connecting joint.
  5. In any one of paragraphs 1 to 4, The above blocking members include two opposing pins (15, 16) that are received to slide in holes (32) formed in the side walls (26, 27) of the first part (3) of the two joint parts, and The opposing pins, in a closed and blocked configuration of the joint, receive the thrust of a spring (34) that presses the pins (15, 16) into holes (12) formed in the side walls (9, 10) of the other second part (2) of the two joint parts, Articulated connecting joint.
  6. In Article 5, It includes two temporary stop portions (40) mounted on the first joint portion (3) and holding the pins (15, 16) against the action of the spring (34) in the open configuration of the joint, and The above temporary stop portions are removable by action against the side walls (9, 10) of the second joint portion (2) during operation to close the joint, Articulated connecting joint.

Description

Articulated connection joint between structural elements of a support centering of an excavation The present invention relates to the field of excavation sections, particularly to tunnels constructed as underground excavation sections. The present invention was developed with special attention to an improved connecting joint for articulated connection between elements of support centering of such an excavation section. It is known that consolidation arches, known as centerings, are used to support excavations, such as road or railway tunnels. In particular, a centering typically comprises multiple formed structural elements, which are manufactured from steel and interconnected in an arched configuration. Such elements consist of open profiles having H-shaped, HEB, HEM, IPE, INP, C-shaped, or double T-shaped sections. In some cases, the elements may be tubular. In most cases, the structural elements of the centering are formed in a woodworking shop and then connected to each other in the area of the excavation to be reinforced. However, centering solutions that provide articulated connections of the structural elements exist. A specific supporting centering of the tubular type, having structural elements joined by articulated connection joints, is described in EP 2354447. Examples of articulated connection joints between the structural elements of the centering are described in WO 2015/186029 and WO 2022/254325. Known articulated joints are effective, but because they are typically made in a carpentry workshop using cut metal sheets welded together, they are expensive and time-consuming to produce. Furthermore, joints produced in this manner have potential defects in terms of resistance, as welds not performed skillfully can jeopardize not only the joint's fit but also the fit of the overall centering. The purpose of the present invention is to improve articulated connection joints for centerings used in excavation sections, thereby making these articulated connection joints faster and thus more economical to manufacture. Another purpose of the present invention is to provide an articulated connection joint that is convenient and safe to use, so as to minimize the risk of damage to the joint and the centering itself. To achieve the aforementioned objectives, the present invention relates to an articulated connecting joint between structural elements of a support centering of an excavation section, having the features set forth in the appended claims. According to a first aspect, an articulated connection joint between structural elements of a support centering of an excavation is described. The joint may comprise two joint portions that can be joined articulated by an articulated pin. The joint between the two joint portions allows for mutual rotation of these joint portions, thereby allowing the joint portions to be changed from an open configuration to a closed configuration. Each of the two joint portions may comprise a base wall and, preferably, at least two side walls extending transversely from the individual base walls, preferably parallel to each other. Blocking members may be provided to the joint to allow it to be irreversibly blocked when the joint is brought into a closed configuration. The two joint portions are manufactured from metal materials by casting. In this way, a strong joint is obtained without sharp edges and therefore without any points of force concentration, and as a result, its resistance is significantly improved compared to articulated joints for known types of centerings. To this end, according to a specific aspect, the individual base walls of the joint are connected to their respective side walls without any sharp edges. According to another specific aspect, each side wall may include a thickened portion in the area where a hole for the passage of a blocking member is formed. In this case, each thickened portion may also be connected to their respective side walls without any sharp edges. According to another specific aspect, one of the two joint parts may be formed to include a member part connected to the base wall and side walls. A through hole may be formed in this member part for the passage of the aforementioned joint pin. The member part may also be connected to the base wall and the side walls of the joint part without any sharp edges. According to another specific aspect, the blocking members may include two opposing pins that are received to slide in each hole formed in the sidewalls of one of the two joint parts. These opposing pins may experience a spring thrust capable of pressing the opposing pins into each hole formed in the sidewalls of the other joint part to bring about irreversible blocking of the joint in the closed position of the joint in a closed and blocked configuration of the joint. According to another specific aspect, the joint may include two temporary stops mounted on the joint portion carrying opposing pins. The two temporary stops can hold the