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CN-224214172-U - Cutter head flushing device and heading machine comprising same

CN224214172UCN 224214172 UCN224214172 UCN 224214172UCN-224214172-U

Abstract

The utility model belongs to the technical field of shield machines, and particularly provides a cutter head flushing device and a heading machine comprising the cutter head flushing device, wherein the cutter head flushing device comprises a maintenance gate, a flushing unit and a water supply unit; the water supply unit is connected with the flushing unit, and the other end of the water supply unit is connected with an external water source and used for supplying water for the flushing unit. The utility model solves the problem that the fixed flushing device cannot be overhauled at normal pressure in the prior art by arranging the overhaul gate, effectively reduces construction risk and improves the application range of equipment, solves the problems of limited flushing area of the fixed flushing pipe, complicated pipeline, rapid water pressure attenuation and the like in the prior art by arranging the flushing unit and the water supply unit, and improves the flushing effect of the cutter head.

Inventors

  • HAN JIALIN
  • TIAN JINKUN
  • XIONG CHENJUN
  • FAN RUIQIANG
  • YANG YANG
  • ZHANG SHUAIKUN
  • ZHANG WEIDONG
  • ZHONG QING
  • Dong Zhiqiao

Assignees

  • 中国铁建重工集团股份有限公司

Dates

Publication Date
20260508
Application Date
20250623

Claims (10)

  1. 1. The cutterhead flushing device is detachably arranged on a shield body (02) of a development machine, and is characterized in that the cutterhead flushing device (01) comprises a service gate (1), a flushing unit (2) and a water supply unit (3); The overhaul gate (1) is detachably arranged on the mounting seat of the flushing unit (2); the flushing unit (2) is detachably arranged on the overhaul gate (1); One end of the water supply unit (3) is connected with the flushing unit (2), and the other end of the water supply unit (3) is connected with an external water source and is used for supplying water for the flushing unit (2).
  2. 2. The cutterhead flushing device according to claim 1, characterized in that the service gate (1) is provided as a normally open gate; A first mounting hole for penetrating and mounting the flushing unit (2) is arranged at the same position of the shield partition plate (201) in the overhaul gate (1) and the shield body (02).
  3. 3. The cutterhead flushing device according to claim 2, characterized in that the flushing unit (2) comprises a first valve body (2.1), a second valve body (2.2), a valve cartridge (2.3), a telescopic tube (2.4), a quick-connect valve (2.6) and a valve body seal (2.8); The first valve body (2.1) and the second valve body (2.2) are connected with each other to form a valve body structure, and the valve body structure is fixedly arranged in a first mounting hole arranged at the same position of the overhaul gate (1) and the shield partition plate (201); The valve core (2.3) is detachably arranged in the valve body structure, and the valve core (2.3) is rotatably connected with the valve body structure; one end of the telescopic pipe (2.4) is installed in the valve core (2.3) in a penetrating way and is coaxially arranged with the valve core (2.3), and the other end of the telescopic pipe (2.4) is connected with the water supply unit (3) through a quick connection valve (2.6); The valve body seal (2.8) is used for sealing between the first valve body (2.1) and the valve core (2.3) and between the second valve body (2.2) and the valve core (2.3).
  4. 4. A cutterhead flushing device according to claim 3, characterized in that the valve body seals (2.8) comprise a first seal (2.8.1), a second seal (2.8.2) and a third seal (2.8.3); the first valve body (2.1) comprises a first main body, a third mounting hole arranged on the first main body and a sealing structure for mounting a valve body seal (2.8); The central axes of the third mounting hole and the first main body are overlapped, and the inner wall of the third mounting hole is of an inner arc surface structure; The sealing structure comprises a first sealing groove and a second sealing groove which are arranged on the inner wall of the third mounting hole at intervals, wherein a first seal (2.8.1) is arranged in the first sealing groove, and a second seal (2.8.2) is arranged in the second sealing groove; The end face, close to the second sealing groove, of the first main body is provided with a third sealing groove, the third sealing groove is arranged in an annular mode, and a third seal (2.8.3) is arranged in the third sealing groove.
  5. 5. A cutterhead flushing device according to claim 3, characterized in that the valve body seal (2.8) comprises a fourth seal (2.8.4); The second valve body (2.2) comprises a second main body, a first limit boss (2.2.1), a flange (2.2.2) and a support groove (2.2.3), wherein the first limit boss is arranged on the second main body; The second main body comprises a flange plate structure matched with the first main body and a sealing cylinder structure matched with the overhaul gate (1), and mounting holes for being connected with the first valve body (2.1) through bolts are formed in the flange plate structure; the first limiting boss (2.2.1) is arranged on the flange plate structure and is used for being connected with a third sealing groove of the first valve body (2.1) in a matched mode so as to compress the third seal (2.8.3); the central axis part of the flange plate structure is also provided with a second mounting hole, the inner wall of the second mounting hole is of an inner circular arc structure, and the second mounting hole and the third mounting hole are of an equal-diameter spherical surface structure; And a fourth sealing groove and a fifth sealing groove are further formed in the inner wall of the second mounting hole, a fourth seal (2.8.4) is arranged in the fourth sealing groove, and the fifth sealing groove is arranged opposite to the second sealing groove and used for mounting the extension end of the second seal (2.8.2).
  6. 6. The cutterhead flushing device according to claim 5, characterized in that a flange (2.2.2) is also provided on the sealing cylinder structure of the second valve body (2.2), the flange (2.2.2) is detachably connected to the access door (1).
  7. 7. A cutterhead flushing device according to claim 3, characterized in that the valve cartridge (2.3) comprises a connection, a sleeve (2.3.1), a limit groove (2.3.2) and a telescopic seal (2.3.3); The connecting part is of a hollow spherical structure matched with a third mounting hole arranged on the first valve body (2.1) and a second mounting hole arranged on the second valve body (2.2); One end of the sleeve (2.3.1) is fixedly arranged in the hollow of the connecting part and extends to the W distance outside the connecting part, the sleeve is used for limiting the telescopic pipe (2.4), and a plurality of groups of telescopic seals (2.3.3) which are arranged at intervals are arranged on the inner wall of the sleeve (2.3.1).
  8. 8. The cutterhead flushing device according to claim 7, characterized in that two supporting grooves (2.2.3) are symmetrically arranged on the inner wall of the sealing cylinder structure of the second valve body (2.2); and the other end of the sleeve (2.3.1) is provided with a limiting groove (2.3.2) for connecting with the two support grooves (2.2.3).
  9. 9. The cutterhead flushing device according to claim 7, wherein the telescopic tube (2.4) comprises a tube body (2.4.1) and a mud guard (2.4.2) arranged on one end of the tube body (2.4.1); The pipe body (2.4.1) is of a reducer pipe structure, a mud guard (2.4.2) is fixedly arranged on the end face of the smaller diameter of the pipe body, and a threaded interface is arranged on the end face of the larger diameter of the pipe body; the mud guard (2.4.2) is used for preventing slag stones generated in the tunneling process of the shield machine from entering the shield body (02) and preventing the telescopic pipe (2.4) from retreating and sliding out of the sleeve (2.3.1) under the action of water and soil pressure of the excavation bin when the cutterhead flushing device (01) is in an initial state.
  10. 10. A heading machine characterized by comprising a shield body (02), a cutterhead (03) and a cutterhead flushing device (01) according to any of claims 1-9; The fixed end of the cutterhead (03) is fixedly connected with the shield body (02), and the driving end of the cutterhead (03) is used for tunneling a tunnel; The cutter head flushing device (01) is detachably arranged on the shield body (02) and is used for flushing the cutter head (03).

Description

Cutter head flushing device and heading machine comprising same Technical Field The utility model belongs to the technical field of shield machines, and relates to a cutter head flushing device and a heading machine comprising the cutter head flushing device. Background When the shield machine is used for tunneling viscous stratum, dregs particles, scraps and the like cut by the cutter head can be gathered on the surface of the cutter head or around the cutter head under the comprehensive actions of factors such as cohesive force, pressure, temperature and the like, and as the shield machine is continuously propelled, gathered particles are continuously increased to form mud cakes, so that a series of problems such as the cutting capability of the cutter head is reduced, the cutter head is worn and aggravated, the shield tunneling is abnormal and the like are caused, and the construction progress of engineering is seriously influenced. The current common practice for treating the cutterhead mud cake is to increase the cutterhead flushing flow or to carry out under-pressure bin feeding treatment. However, the pressure of flushing water is suddenly reduced after the slurry in the excavating bin is excavated, so that the mud cake of the cutterhead cannot be effectively flushed, and meanwhile, the pressurized operation mode of entering the bin is high in cost and high in risk, and unnecessary economic loss is brought to construction. In the existing technology for preventing and controlling cutterhead mud cakes, a fixed flushing system is mostly designed, a flushing port is protected in a telescopic mode, a flushing hole position is increased to improve a flushing area, and the problems that the flushing area is limited, the pipeline arrangement is complicated, the pipeline is damaged in a different mode and the like exist. Therefore, how to develop a shield cutter head flushing device which can realize telescopic protection, normal pressure maintenance, multiple degrees of freedom and variable area flushing is a subject which needs to be studied intensively by a person skilled in the art. Disclosure of utility model Aiming at the defects in the prior art, the utility model provides a cutter head flushing device, and aims to solve the problems of weak equipment adaptability, complicated pipeline arrangement, difficulty in normal pressure maintenance and the like in the prior art. The utility model provides a cutterhead flushing device which is detachably arranged on a shield body of a heading machine, wherein the cutterhead flushing device comprises a maintenance gate, a flushing unit and a water supply unit; the overhaul gate is detachably arranged on the mounting seat of the flushing unit; the flushing unit is detachably arranged on the overhaul gate; One end of the water supply unit is connected with the flushing unit, and the other end of the water supply unit is connected with an external water source and is used for supplying water for the flushing unit. Further, the overhaul gate is set as a normally open gate; the same positions of the overhaul gate and the shield partition plate in the shield body are provided with first mounting holes for penetrating and mounting the flushing unit. Further, the flushing unit comprises a first valve body, a second valve body, a valve core, a telescopic pipe, a quick-connection valve and a valve body seal; The first valve body and the second valve body are connected with each other to form a valve body structure, and the valve body structure is fixedly arranged in a first mounting hole arranged at the same position of the overhaul gate and the shield partition plate; the valve core is detachably arranged in the valve body structure and is rotatably connected with the valve body structure; One end of the telescopic pipe is installed in the valve core in a penetrating way and is coaxially arranged with the valve core, and the other end of the telescopic pipe is connected with the water supply unit through a quick-connection valve; The valve body seal is used for sealing between the first valve body and the valve core and between the second valve body and the valve core. Further, the valve body seal includes a first seal, a second seal, and a third seal; The first valve body comprises a first main body, a third mounting hole arranged on the first main body and a sealing structure for mounting the valve body for sealing; The central axes of the third mounting hole and the first main body are overlapped, and the inner wall of the third mounting hole is of an inner arc surface structure; the sealing structure comprises a first sealing groove and a second sealing groove which are arranged on the inner wall of the third mounting hole at intervals, wherein a first seal is arranged in the first sealing groove, and a second seal is arranged in the second sealing groove; The end face, close to the second sealing groove, of the first main body is provided with a third sealing groove