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CN-116877097-B - Shield steel sleeve

CN116877097BCN 116877097 BCN116877097 BCN 116877097BCN-116877097-B

Abstract

The application relates to a shield steel sleeve, which comprises a barrel, a plurality of arc-shaped mounting blocks, first screws, second screws and a plurality of sealing elements, wherein the barrel is provided with an opening end and is used for receiving a shield machine, the arc-shaped mounting blocks are respectively provided with an arc-shaped groove embedded with the opening end, the arc-shaped mounting blocks are mutually connected to form a continuous arc-shaped groove embedded with the opening end, the two ends of each arc-shaped mounting block are respectively provided with a connecting lug, each arc-shaped mounting block is provided with a threaded hole penetrating from the outer cambered surface of each arc-shaped mounting block to the arc-shaped groove, the first screws are used for penetrating through the connecting lugs to mutually connect the arc-shaped mounting blocks in the circumferential direction, the second screws are used for locking the arc-shaped mounting blocks and the barrel in the radial direction through the threaded holes after the arc-shaped mounting blocks are embedded and assembled, and the sealing elements are arranged between the barrel and the arc-shaped mounting blocks and between the adjacent arc-shaped mounting blocks. The shield steel sleeve forms sealing embedded assembly through a plurality of arc-shaped mounting blocks and sealing elements, and is convenient to maintain.

Inventors

  • CUI GUANNAN

Assignees

  • 中国铁建大桥工程局集团有限公司

Dates

Publication Date
20260512
Application Date
20230913

Claims (7)

  1. 1. A shield steel sleeve, the shield steel sleeve comprising: a cylinder (1) with an opening end, wherein the cylinder (1) is used for receiving a shield machine; The arc-shaped mounting blocks (100) are provided with arc-shaped grooves (101) which are embedded with the open ends, the arc-shaped mounting blocks (100) are connected with each other to form continuous arc-shaped grooves (102) which are embedded with the open ends, connecting lugs (140) are arranged at two ends of each arc-shaped mounting block (100), and each arc-shaped mounting block (100) is provided with a threaded hole (124) which penetrates through the outer cambered surface of the arc-shaped mounting block (100) to the arc-shaped groove (101); a first screw (150) for penetrating the connection lugs (140) to connect the plurality of arc-shaped mounting blocks (100) to each other in a circumferential direction; the second screw (160) is used for locking a plurality of arc-shaped mounting blocks (100) and the cylinder (1) in the radial direction through the threaded holes (124) after the arc-shaped mounting blocks (100) are embedded and assembled with the cylinder (1); a plurality of seals disposed between the cylinder (1) and the arc-shaped mounting blocks (100) and also disposed between adjacent arc-shaped mounting blocks (100); The arc-shaped mounting block (100) includes: -an arcuate end wall (110); An outer arcuate wall (120) connected to an outer arcuate side of the arcuate end wall (110) and provided with the threaded hole (124); an inner arcuate wall (130) connected to an inner arcuate side of said arcuate end wall (110) and spaced opposite said outer arcuate wall (120); Wherein the arc-shaped groove (101) formed by surrounding the arc-shaped end wall (110), the outer arc-shaped wall (120) and the inner arc-shaped wall (130), and connecting lugs (140) are arranged on the outer arc-shaped wall (120) and/or the inner arc-shaped wall (130); A concave step is arranged at the corner of the connecting ends of the arc-shaped mounting blocks (100), a plurality of sealing pieces comprise '匚' sealing strips (190), and the '匚' sealing strips (190) are matched with the concave steps to form sealing between the adjacent arc-shaped mounting blocks (100); The concave steps comprise a first step (121) sunk in the outer arc-shaped wall (120) and a first step (122) sunk in the outer surface of the inner arc-shaped wall (130), a second step (122) sunk in the arc-shaped end wall (110) and a third step (123) sunk in the outer arc-shaped wall (120) and the inner end surface of the inner arc-shaped wall (130), the '匚' shaped sealing strip (190) comprises a first sealing part (191), a second sealing part (192) and a third sealing part (193) which are connected with the two ends of the first sealing part (191), the first sealing part (191) is correspondingly embedded in the first step (121), the second sealing part (192) is correspondingly embedded in the second step (122), and the third sealing part (193) is correspondingly embedded in the third step (123).
  2. 2. The shield steel sleeve according to claim 1, wherein two ends of the arc-shaped mounting block (100) are respectively provided with a jogged block (180) and a jogged groove (170), and two adjacent arc-shaped mounting blocks (100) form jogged connection through the jogged block (180) and the jogged groove (170).
  3. 3. The shield steel sleeve according to claim 2, wherein the length of the fitting block (180), the fitting groove (170) is smaller than the thickness of the arc-shaped mounting block (100).
  4. 4. A shield steel sleeve according to claim 3, wherein the fitting block (180) and the fitting groove (170) are provided on the outer arc wall (120) and the inner arc wall (130) respectively.
  5. 5. The shield steel sleeve according to claim 1, wherein the bottom of the arc-shaped groove (101) is further provided with an arc-shaped sinking groove (103), the shield steel sleeve further comprises a buffer pad (200), and the buffer pad (200) is arranged in the arc-shaped sinking groove (103) in a matching and jogging manner.
  6. 6. The shield steel sleeve according to claim 1, wherein the inner peripheral surface of the outer arc wall (120) is further provided with a first arc-shaped groove (104), the plurality of seals comprises a first arc-shaped sealing piece (210), and the first arc-shaped sealing piece (210) is arranged in the first arc-shaped groove (104) in a matching and jogging way.
  7. 7. The shield steel sleeve according to claim 1, wherein the inner circumferential surface of the inner arc wall (130) is further provided with a second arc-shaped groove (105), the plurality of seals comprises a second arc-shaped sealing piece (220), and the second arc-shaped sealing piece (220) is arranged in the second arc-shaped groove (105) in a matching and jogging way.

Description

Shield steel sleeve Technical Field The application relates to a tunneling technology, in particular to a shield steel sleeve. Background The shield steel sleeve is of a barrel-shaped structure with one open end, the whole shield steel sleeve structure consists of a transition ring, a barrel body, a rear end cover plate, a reaction frame, a front support, a rear support, a left support, a right support and the like, and in order to prevent frozen reinforcing bodies from cracking in a pushing process to form water sand to flow out in a pushing process in order to cause ground collapse, the front end of the shield steel sleeve needs to be guaranteed to have good sealing performance after the tunnel portal is chiseled. The traditional shield steel sleeve is generally formed by combining and welding a plurality of arc-shaped steel plates and assembling the arc-shaped steel plates on a cylinder body, the arc-shaped steel plates are fixed together through welding, a pre-buried grouting pipe is led out of a water stopping device at the outer side of a transition ring of the steel sleeve, and mud and water are blocked in the process of entering a tunnel portal of a shield body. The front end of the traditional shield steel sleeve is generally composed of a plurality of arc-shaped steel plates welded together, once water leakage and other conditions occur in the using process, maintenance is troublesome, and a large amount of time is consumed for welding the arc-shaped steel plates. Disclosure of Invention The application provides a shield steel sleeve device, which aims to solve the problems that a traditional shield steel sleeve is difficult to maintain under the condition of water leakage in the use process and a plurality of arc-shaped steel plates consume a large amount of time in the welding process. In order to solve the technical problems, the technical scheme is that the shield steel sleeve comprises the following components: a cylinder body having an open end, the cylinder is used for receiving the shield machine; The arc-shaped mounting blocks are respectively provided with an arc-shaped groove embedded with the opening end, the arc-shaped mounting blocks are mutually connected to form a continuous arc-shaped groove embedded with the opening end, the two ends of each arc-shaped mounting block are respectively provided with a connecting lug, and each arc-shaped mounting block is provided with a threaded hole penetrating from the outer cambered surface of the arc-shaped mounting block to the arc-shaped groove; a first screw for penetrating the connection lugs to connect the plurality of arc-shaped mounting blocks to each other in a circumferential direction; the second screw is used for locking the arc-shaped mounting blocks and the cylinder body in the radial direction through the threaded holes after the arc-shaped mounting blocks are embedded and assembled with the cylinder body; The plurality of sealing elements are arranged between the cylinder body and the arc-shaped mounting blocks and are also arranged between the adjacent arc-shaped mounting blocks. In one embodiment of the present application, the arc-shaped mounting block includes: An arcuate end wall; An outer arc wall connected to the outer arc side of the arc end wall and provided with the threaded hole; an inner arc wall connected to the inner arc side of the arc end wall and spaced opposite to the outer arc wall; The arc-shaped groove is formed by encircling the arc-shaped end wall, the outer arc-shaped wall and the inner arc-shaped wall, and connecting lugs are arranged on the outer arc-shaped wall and/or the inner arc-shaped wall. In a specific embodiment of the present application, two ends of the arc-shaped mounting block are respectively provided with an engaging block and an engaging groove, and two adjacent arc-shaped mounting blocks form an engaging connection through the engaging blocks and the engaging grooves. In a specific embodiment of the present application, the lengths of the engaging block and the engaging groove are smaller than the thickness of the arc-shaped mounting block. In a specific embodiment of the present application, the engaging block and the engaging groove are disposed corresponding to the outer arc wall and the inner arc wall. In one embodiment of the present application, the end surfaces of the arc-shaped mounting blocks connected to each other are provided with concave steps, and the plurality of sealing members comprise '匚' shaped sealing strips, and the '匚' shaped sealing strips are matched with the concave steps to form sealing between adjacent arc-shaped mounting blocks. In a specific embodiment of the present application, the concave steps include a first step recessed in the outer arc wall, a first step recessed in the outer surface of the inner arc wall, a second step recessed in the arc end wall, and a third step recessed in the inner end surface of the outer arc wall, the inner arc wall, and the "匚