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CN-224214177-U - Tool for opening of cutter head for opening bin quickly under normal pressure of shield tunneling machine

CN224214177UCN 224214177 UCN224214177 UCN 224214177UCN-224214177-U

Abstract

A be used for shield to construct quick-witted ordinary pressure to open storehouse quick-witted open-ended frock of blade disc belongs to the ordinary pressure of shield tunnel and opens storehouse technical field, including the baffle, the baffle passes through 4 fixed subassembly of group and can dismantle and connect in knife beam main part front end upper surface, every group fixed subassembly all includes L type screw thread tensioning rod and the bolt of mutual matching, L type screw thread tensioning rod vertical end runs through behind the baffle with bolted connection, L type screw thread tensioning rod's horizontal end and knife beam main part bottom surface laminating, be equipped with the baffle layering between bolt and the baffle, be equipped with the gasket between bolt and the baffle layering. The shield machine cutterhead opening end supporting and blocking system can be formed at the opening end of the shield machine cutterhead rapidly, and has a good effect of resisting soil pressure, so that the life safety of operators can be effectively guaranteed.

Inventors

  • FENG FAN
  • JIANG CAIHUA
  • TANG SHUNLONG
  • WU JINPING
  • LI XUDONG

Assignees

  • 中国水利水电第七工程局有限公司

Dates

Publication Date
20260508
Application Date
20250521

Claims (7)

  1. 1. A tool for quickly closing an opening of a cutterhead during normal-pressure opening of a shield tunneling machine is characterized by comprising a baffle plate (1), wherein the baffle plate (1) is detachably connected to the upper surface of the front end of a cutter beam main body (5) through a fixing component, the fixing component is at least provided with two groups, the two groups of fixing components are symmetrically arranged relative to the central line of the cutter beam main body (5), each group of fixing components comprises an L-shaped threaded tensioning rod (2) and a bolt (4) which are matched with each other, the L-shaped threaded tensioning rod (2) is arranged on the inner side edge of the cutter beam main body (5), the vertical end of the L-shaped threaded tensioning rod (2) penetrates through the baffle plate (1) and then is connected with the bolts (4), and the horizontal end of the L-shaped threaded tensioning rod (2) is attached to the bottom surface of the cutter beam main body (5).
  2. 2. The tool for quickly closing the opening of the cutterhead during normal-pressure opening of the shield machine according to claim 1 is characterized in that the baffle (1) is a visual PC board.
  3. 3. The tool for quickly closing the opening of the cutter head during normal-pressure opening of the shield machine according to claim 1, wherein 4 groups of fixing components are arranged, and the 4 groups of fixing components are respectively positioned at four corners of the baffle plate (1).
  4. 4. The tool for quickly closing the opening of the cutterhead during normal-pressure opening of the shield machine according to claim 1 is characterized in that the vertical end of the L-shaped threaded tensioning rod (2) is a threaded section, and the horizontal end is a smooth round rod.
  5. 5. The tool for quickly closing the opening of the cutterhead during normal-pressure opening of the shield machine according to claim 1 is characterized in that a baffle pressing bar (3) is arranged between the bolt (4) and the baffle (1).
  6. 6. The tool for quickly closing the opening of the cutterhead during normal-pressure opening of the shield machine according to claim 5 is characterized in that a gasket is arranged between the bolt (4) and the baffle pressing bar (3).
  7. 7. The tool for quickly closing the opening of the cutterhead during normal-pressure opening of the shield machine according to claim 5 is characterized in that 4 groups of concentric through holes are formed in the baffle plate (1) and the baffle plate pressing strip (3), and the L-shaped threaded tensioning rod (2) penetrates through the through holes and then is connected with the bolts (4).

Description

Tool for opening of cutter head for opening bin quickly under normal pressure of shield tunneling machine Technical Field The utility model belongs to the technical field of normal-pressure opening of shield tunnels, relates to a tool for sealing a cutter head opening of a shield machine, and particularly relates to a tool for rapidly sealing the cutter head opening of the normal-pressure opening of the shield machine. Background In the construction of the shield method, when the cutter wear cannot meet the continuous tunneling working condition of the shield due to long-time tunneling of the shield machine, operators need to enter a tunneling bin to check the cutter wear condition and replace the cutter wear condition. When personnel enter the warehouse, the tunnel face has poor self stability, is easy to be unbalanced to cause local collapse, causes sudden air pressure drop in the soil warehouse, even causes dangerous situations such as water seepage, sand burst and the like, and seriously threatens the life safety of the operators. The traditional protective measures are mainly welding steel baffles or stacking sand bags and the like. But both of these approaches suffer from the following drawbacks: 1. The dead weight of the steel baffle is large, the assembly and the disassembly are time-consuming and labor-consuming, the adaptability to the wear-resistant structure of the cutter disc is poor, and gaps are easily generated due to vibration. 2. Flexible materials such as sand bags are difficult to effectively resist lateral pressure of soil bodies, and the tightness is insufficient. In addition, while some of the prior art rigid support devices provide some protection, the lack of a systematic force transmission design results in localized stress concentrations that can easily cause structural deformation or even failure. Therefore, a protection structure which is light in weight, high in strength and capable of being assembled quickly is needed, not only can be matched with a cutterhead wear-resisting system accurately, but also can disperse soil pressure through a reasonable mechanical transmission mechanism, so that long-acting control of stability of a tunnel face is realized. Disclosure of Invention In view of the shortcomings of the prior art, the utility model aims to provide a tool for rapidly closing a cutterhead opening during normal-pressure opening of a shield machine, which is used for solving the technical problems that the tunnel face is collapsed due to the fact that the cutterhead opening is not closed in time during normal-pressure opening of the shield machine in the prior art, and life safety of operators is threatened. In order to achieve the above and other related objects, the utility model provides a tool for quickly closing an opening of a cutterhead during normal-pressure opening of a shield machine, which comprises baffle plates, wherein the baffle plates are detachably connected to the upper surface of the front end of a cutter beam main body through fixing components, at least two groups of the fixing components are arranged, and the two groups of the fixing components are symmetrically arranged about the central line of the cutter beam main body. In any of the above embodiments, preferably, the baffle is a visual PC board. In any of the above solutions, preferably, the fixing assemblies are provided with 4 groups, and the 4 groups of fixing assemblies are respectively located at four corners of the baffle. In any of the above schemes, preferably, each group of fixing components comprises an L-shaped threaded tensioning rod and a bolt, wherein the L-shaped threaded tensioning rods are matched with each other, the L-shaped threaded tensioning rods are arranged on the inner side edges of the cutter beam main body, the vertical ends of the L-shaped threaded tensioning rods penetrate through the baffle plates and are connected with the bolts, and the horizontal ends of the L-shaped threaded tensioning rods are attached to the bottom surface of the cutter beam main body. In any of the above schemes, preferably, the vertical end of the L-shaped threaded tensioning rod is a threaded section, and the horizontal end is a smooth round rod. In any of the above schemes, preferably, a baffle pressing bar is arranged between the bolt and the baffle. In any of the above schemes, preferably, a gasket is arranged between the bolt and the baffle pressing bar. In any of the above schemes, preferably, 4 groups of concentric through holes are formed in the baffle and the baffle pressing bar, and the L-shaped threaded tensioning rod penetrates through the through holes and is connected with the bolts. As described above, the tool for rapidly closing the cutter head opening during normal-pressure opening of the shield machine has the following beneficial effects: 1. The shield machine cutterhead opening end supporting and blocking system can be formed at the opening end of the shield machine cutter