JPH0714477Y2 - Sediment intake device in shielded conduit - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial field of application] The present invention relates to a device for taking in earth and sand in a shielded conduit in a small diameter pipe propulsion method.

[0002]

2. Description of the Related Art In the conventional small-diameter pipe propulsion method, the earth and sand that enter from the cutter head are discharged by the auger, but the water and muddy water that enter from the cutter head flow out along the spiral of the auger. May be discharged from the face through the auger to the outside of the mine, causing subsidence.

Therefore, a means for closing the casing by pressing the rotary shaft of the auger with a pinch valve has been taken, but it was difficult to suppress the muddy water passing through the pinch valve due to the earth and sand.

[0004]

[PROBLEMS TO BE SOLVED BY THE INVENTION] The object of the present invention is to obtain a sediment capturing device for capturing sediment into a shielded conduit while suppressing a sudden inflow of spring water and mud from a face in a small diameter pipe propulsion method. To do.

[0005]

In order to achieve the above object, the present invention provides a cutter head at the tip, a cutter is provided on a face plate of the cutter head, and a tip of a rotating shaft is connected to the face plate, An auger is formed by providing a spiral for loading and unloading sand on the outer periphery of the moving shaft, the auger is provided in a tip opening casing, and a notch for taking in sand is provided on the upper side surface of the tip opening of the casing, and one side edge of the notch In a shielded conduit formed by projecting a soil and sand intake guide scraper, a tip end rotary closing plate of the casing is provided on the outer periphery of the rotating shaft, and at least a part of the closing plate is the center of the rotating shaft. Sediment intake device in a shielded conduit formed so as to cross the line obliquely and open the sand intake port intermittently between the closing plate and the notch with one rotation of the closing plate. Description of the above-mentioned device that is oblique to the center line It constituted by sediment capture device in the shield lead pipe.

[0006]

Therefore, the rotary shaft 3 is rotated to rotate the face plate 4, and the shield tip conduit 5 is pressed to excavate the face by the cutter 6 provided on the face plate 4 to propel the ground.

In this way, the earth and sand carrying spiral 7 rotates in the casing 1, so that the face plate 4 to the cutter head 8 are moved.
The earth and sand that has entered the inside is blocked by the rotary closing plate 2, and a part 2 ′ of the closing plate 2 opens the earth and sand intake port 5 between the cutout 5 ′ and the intake port every one rotation. After passing through 5, it enters the casing 1 and is carried out backward by the rotation of the spiral 7.

The spring water or muddy water from the face is stopped by the closing plate 2 and is taken into the casing 1 along with the earth and sand from the earth and sand inlet 5 opened every one rotation of the closing plate 2, so that the inside of the casing 1 is closed. It does not flow rapidly into.

[0009]

EXAMPLE A swing type cutter head 8 is provided at the tip end portion, and a disk cutter 6 is rotatably supported in a groove formed in a face plate 4 at the tip end of the head 8. The central portion of the inner surface of the face plate 4 is connected to the tip of the rotary shaft 3, and the rotary shaft 3 rotates the face plate 4 and the rotary cylinder 4 ′ connected thereto via a bearing 9. Of course, the rotating cylinder 4'is held in the cutter head 8. A sediment carrying spiral 7 is provided on the outer periphery of the rotating shaft 3 to form an auger 10, the auger 10 is supported in the tip opening casing 1, and the earth is taken into the upper surface of the tip opening portion of the casing 1. Forming a cutout 5 ', and at one side edge of the cutout 5', a sand and sand intake guide scraper 11
Shielded conduit 15 which is used for the small diameter propulsion method
To form.

At the tip of the casing 1, a rotary closing plate 2 is provided on the outer circumference of the rotating shaft 3, and at least a part 2'of the closing plate 2 is obliquely intersected with the center line of the rotating shaft 3. (FIG. 4), whereby the earth and sand inlet 5 can be intermittently opened between the part 2 ′ and the notch 5 ′ with one rotation of the closing plate 2. As shown in FIG. 1, FIG. 2 and FIG. 3, the closing plate 2 may be diagonally crossed with the center line. Reference numeral 12 in the figure denotes a swing joint of the cutter head 8, 13 is a swing cylinder, and 14 is a pinch valve.

[0011]

Since the present invention is constructed as described above, when the spring water or muddy water from the face is severe, it can be blocked by the closing plate 2, and the spring water or muddy water is transferred to the spiral 7 of the auger 10. There is no danger of spillage along the ground, there is a benefit that ground subsidence due to groundwater spillage can be prevented, and small-diameter propulsion can be performed safely.

[Brief description of drawings]

FIG. 1 is a side view showing a sediment capturing device in a shielded conduit of the present invention.

FIG. 2 is a side view of a casing closed state by the rotary closing plate.

FIG. 3 is a side view showing an open state of the earth and sand inlet.

FIG. 4 is a side view of another embodiment of FIG.

FIG. 5 is a perspective view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tip opening casing 2 Tip rotation closing plate 2'Part 3 Rotating shaft 5'Notch for earth and sand intake 5 Earth and sand intake

Claims (2)

[Scope of utility model registration request] 1. An auger provided with a cutter head at a tip end thereof, a cutter provided on a face plate of the cutter head, a tip end of a rotating shaft being connected to the face plate, and a sediment carrying spiral provided on an outer periphery of the rotating shaft. A shield formed by forming the auger in a tip opening casing, providing a notch for taking in sediment on the upper side surface of the tip opening of the casing, and projecting a sediment taking-in scraper at one side edge of the notch. In the front conduit, a tip end rotary closing plate of the casing is provided on the outer periphery of the rotating shaft, and at least a part of the closing plate obliquely intersects the center line of the rotating shaft so that the closing plate can rotate once. Accordingly, the earth and sand intake device in the shielded conduit formed so as to intermittently open the earth and sand intake between the closing plate and the notch. 2. The earth and sand intake device for a shielded conduit according to claim 1, wherein all of the closing plates are obliquely intersected with the center line.