JP3018602U - Muddy water shield machine mud pipe blocking device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a blockage releasing device capable of safely and easily removing a blockage of a mud discharge pipe of a muddy water shield machine. [Structure] In a sludge drain pipe blockage release device 20 of a muddy water shield machine 10 having a sludge pipe 13 and a sludge pipe 14,
Equipped with a hydraulic jack 21 near the entrance of the
The rod 22 of No. 1 extends to the vicinity of the inlet in the sludge pipe 14, and removes the blockage near the inlet of the sludge pipe shield device 10 of the muddy water shield machine 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a muddy water shield machine.

[0002]

[Prior art]

 Conventionally, when the mud pipe is clogged with occluders such as gravel and tan, which are larger than the diameter, the mud is sent and discharged alternately to release the obstruction, and a worker enters the bulkhead to remove the obstruction. ing.

[0003]

[Problems to be solved by the device]

 The conventional technique has the following problems. <a> When the sending and discharging mud is repeated alternately, the face pressure fluctuates, so there is a risk of face collapse, and in many cases the blockage cannot be released. <B> When a worker enters the bulkhead, there is a safety problem. <C> With the conventional method, it takes much time to remove the blockage.

[0004]

[Purpose of the present invention]

 The present invention has been made to solve the above problems, and it is an object of the present invention to provide a blockage releasing device that can safely and easily remove a blockage of a mud pipe of a muddy water shield machine.

[0005]

[Means for Solving the Problems]

 The present invention relates to a mud pipe blockage releasing device of a mud shield machine having a mud pipe and a mud pipe, characterized in that the mud pipe is provided with a removing means for removing a blockage that blocks the mud pipe. The mud shield blocking device of the mud shield machine or a jack near the entrance of the mud pipe, the rod of the jack extends near the entrance of the mud pipe to remove the blockage near the entrance. A feature is a mud pipe blockage release device for a mud shield machine, or a jack is provided near the entrance on the outside of the mud pipe, and the jack rod extends near the entrance in the mud pipe, and a sheath pipe that covers the jack rod is installed. It is provided in the device for releasing the blockage of the mud pipe in a muddy water shield machine.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. <B> Muddy water shield machine (FIG. 1) The muddy water shield machine 10 fills the bulkhead 15 between the cutter head 11 and the partition wall 12 with pressurized muddy water to stabilize the cutting face and excavate the earth and sand in the muddy water. It is taken in and fluidly transported as waste mud water. The muddy water shield machine 10 has a muddy water pipe 13 for sending muddy water into the bulkhead 15 and a muddy water pipe 14 for discharging muddy water to the outside. The excavated earth and sand include gravel, sand lumps, etc. 30, and a large one of these may block the pipe near the inlet of the sludge pipe 14. The clogging material such as the gravel, the sand lump, and the like 30 is removed by the mud discharge pipe blockage releasing device 20.

<B> Drainage pipe blockage release device (FIG. 2) The drainage pipe blockage release device 20 uses, for example, a hydraulic jack 21 as a means for removing blockages such as gravel and sand lumps 30. The hydraulic jack 21 is arranged so that the rod 22 can be extended to remove the blockage. For example, it is arranged near the outside entrance of the sludge pipe 14. A sheath pipe 23 is attached between the mud pipe and the hydraulic jack 21 so as to cover the rod 22 of the hydraulic jack 21. The sheath pipe 23 can prevent the muddy water in the sludge discharge pipe 14 from entering the shield machine working space 16. The operation of the hydraulic jack 21 is performed by the hydraulic jack operation switch equipped on the operation carriage. The rod 22 of the hydraulic jack 21 extends to push out the gravel, the sand lump, etc. The extruded gravel, sand lumps, etc. 30 are crushed by the rotation of the back surface of the cutter in the bulkhead 15 to have a diameter capable of being discharged, and then discharged. The tip of the rod 22 is cut out so as to be parallel to the inner diameter of the sludge discharge pipe 14, for example.

<C> Removal of gravel, sand lump, etc. The earth and sand excavated by the cutter head 11 is transferred to the discharge pipe by the muddy water sent from the mud pipe 13. If a gravel, a lump of sand, or the like 30 having a large diameter closes the vicinity of the inlet of the sludge pipe 14, the hydraulic jack operation switch is activated. The rod 22 of the hydraulic jack 21 extends and pushes out the gravel, the sand lump, etc. 30 to eliminate the blockage of the sludge pipe 14. The removed gravel, sand lumps, etc. 30 are crushed by the rotation of the cutter in the bulkhead 15 and are discharged to a size that can be discharged.

[0009]

[Effect of the present invention]

 Since the present invention has been described above, the following effects can be obtained. <A> Since the block can be easily released with a jack, it is not necessary to change the pressure of muddy water. As a result, it is possible to prevent the face from collapsing due to changes in the face pressure. <B> Since it is not necessary for a worker to enter the bulkhead to remove gravel, sand lumps, etc., the safety of the worker can be obtained.

[Brief description of drawings]

[Fig. 1] Cross-sectional view of the main parts of a muddy water shield machine

FIG. 2 is a cross-sectional view of a mud discharge pipe blockage release device.

Claims (3)

[Scope of utility model registration request] Claim: What is claimed is: 1. A mud discharge pipe blockage release device for a muddy water shield machine having a mud pipe and a mud pipe, wherein the mud pipe is provided with a removing means for removing a blockage that blocks the mud pipe. It is a device for releasing the blockage of the mud pipe in a muddy water shield machine. 2. A mud pipe blocking release device for a mud shield machine having a mud pipe and a mud pipe, wherein a jack is provided near the entrance of the mud pipe, and a rod of the jack extends near the entrance inside the mud pipe. A mud pipe blockage release device for a muddy water shield machine, which removes blockages near the inlet. 3. A mud pipe blocking release device for a muddy water shield machine having a mud pipe and a mud pipe, wherein a jack is provided near an inlet outside the mud pipe, and a rod of the jack extends near the inlet inside the mud pipe. , A device for releasing the blockage of a mud pipe in a muddy water shield machine, which is characterized in that a sheath pipe for covering the rod of the jack is provided.