JP2774348B2 - Upward shield machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an upward shield excavator that excavates the ground upward from a horizontally excavated tunnel to provide ventilation holes in a mountain tunnel or the like. It is.

[Prior Art] In order to provide ventilation holes in mountain tunnels and the like, when excavating the ground upward from a horizontally excavated tunnel, conventionally, a pile is driven so as to reach a horizontal tunnel from the ground surface, A cutter for excavation was attached to the lower end of the pile, and the ground was excavated upward by the cutter while pulling up the pile.

[Problems to be Solved by the Invention] When excavating the ground upward with a drilling cutter attached to the lower end of the pile, it does not collapse in the case of hard geology, but does not collapse in the case of soft geology. There is a risk of collapse.

Therefore, it is sufficient to excavate the ground with a shield excavator suitable for excavation of soft geology facing upward, but segment supply cannot be performed by a conveyor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an upward shield excavator provided with a segment supplying means suitable for an upward shield excavator.

[Means for Solving the Problems] An upward shield excavator of the present invention is provided inside an excavation cylinder of a shield excavator that excavates upward and horizontally rotates an erector rotating frame, and is attached to the erector rotating frame. A hanging beam that expands and contracts horizontally, a wire that hangs from the tip of the hanging beam and lifts a segment,
It is characterized by having.

[Operation] The segment transported to the lower part of the tunnel excavating upward is lifted by the wire hanging from the tip of the suspension beam, and is rotated by the erector rotating frame and the extension of the suspension beam to a required location. Assembled.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view of the present invention, wherein 1 is a cutter,
Reference numeral 2 denotes a digging cylinder, 3 denotes a bulkhead, 4 denotes a propulsion jack, and 5 denotes a mud pipe, all of which are facing upward, and show a state of digging upward from a lower horizontal pit (not shown). I have.

A support beam 6 fixed inside the excavation barrel 2 is located below the partition wall 3, and a cutter rotation motor 7 is mounted above the support beam 6.
A vertical fixed shaft 8 is fixed to the lower center. In the middle of the fixed shaft 8, an erector rotating frame 9 is provided.
, And a pinion 11 rotated by an erector rotation motor 10 mounted on the erector rotation frame 9 meshes with a gear 12 fixed to the fixed shaft 8 to rotate the erector rotation frame 9. Is rotated about a fixed shaft 8. The cylinder 13 is built in the erector rotating frame 9, and the cylinder 13 extends and contracts the suspension beam 14 horizontally from one end of the erector rotating frame 9. A hoisting motor 15 is provided on the upper surface of one end of the erector rotating frame 9, and a wire 16 which is wound up and rewinded by the hoisting motor 15 hangs via a pulley 17 attached to the upper end of the suspension beam 14. And wire
At the lower end of the segment 16, the segment 18 is lifted.
When lifting the segment 18 at the lower end of the wire 16, a box hole through which a bolt is inserted when assembling the segment 18 is used. At the other end of the erector rotating frame 9, a counterweight 19 for balancing weight is attached.

A work stage 20 is fixed to a lower end of the fixed shaft 8, and a segment passage hole 21 for passing the segment 18 is formed in the work stage 20.

In a mountain or the like, a tunnel is excavated in a horizontal direction, and in order to provide a ventilation hole for the tunnel, an upward shield excavator shown in FIG. 1 is installed in the horizontal tunnel and excavated upward. The segment 18 to be assembled as the digging goes upward is transported in a horizontal tunnel to a position directly below the upward shield digging machine by a conveyor, a truck, or the like.

Then, the wire 18 is rewound, the segment 18 being conveyed to immediately below is hung at the lower end of the wire 16, the wire 16 is wound by the hoist motor 15, and passed through the segment passage hole 21 as shown in FIG. Lift segment 18 to 14.

Next, the erector rotation motor 10 is driven to rotate the erector rotation frame 9 horizontally, and the suspension beam 14 and the segment 18 are oriented in the assembly direction of the segment 18, and the suspension beam 14 is extended as shown in FIG. Push the 18 into the assembled position and join it to the already assembled segment 22. When extending the suspension beam 14 to push the segment 18 into the assembly position, the wire 16 must be slightly unwound.

When extending the suspension beam 14, with respect to the direction in which the segment 18 interferes with the sludge pipe 5, the erector rotating frame 9 is directed in a direction in which the segment 18 can pass the side of the sludge pipe 5, and the suspension beam 14 is moved. After the segment 18 has extended and passed the side of the mud pipe 5, the erector rotating frame 9 is slightly rotated so that the segment 18 is pushed into the assembly position.

FIG. 3 is a longitudinal sectional view of another embodiment of the present invention, and the same parts as those in FIG. 1 are denoted by the same reference numerals.

In the embodiment shown in FIG. 3, a horizontal guide ring 23 is rotatably provided on the inner surface of the excavating cylinder 2 immediately below the support beam 6. The erector rotating frame 9 is supported by a supporting shaft 24 mounted on the guide ring 23 so as to be able to rotate horizontally, and a pinion 11 rotated by an erector rotating motor 10 mounted on the erector rotating frame 9 is supported by the supporting shaft. The gear 12 is engaged with the gear 12 fixed to the gear 24 and rotates the erector rotating frame 9 about the support shaft 24. 1, a wire 16 is suspended from a pulley 17 attached to the upper end of a horizontally extending suspension beam 14, similarly to the embodiment shown in FIG.
By winding the 16, the segment 18 is lifted, and by rotating the erector rotating frame 9 about the support shaft 24 and extending the suspension beam 14, the lifted segment 18 can be pushed into a required position and assembled. In the embodiment shown in FIG. 3, by rotating the guide ring 23, the segment 18 can be assembled without hindering the exhaust pipe 5.

[Effect of the Invention] The present invention relates to a shield excavator that excavates upward,
The segments can be carried by wire to the erector rotating frame and assembled.

[Brief description of the drawings]

1 is a longitudinal sectional view of one embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a state in which segments are assembled by the apparatus of FIG. 1, and FIG. 3 is a longitudinal sectional view of another embodiment of the present invention. It is. In the figure, reference numeral 2 denotes a digging barrel, 9 denotes an erector rotating frame, 14 denotes a suspension beam, 16 denotes a wire, and 18, 22 denote segments.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiaki Uehara 13th, Showa-cho, Minato-ku, Nagoya, Aichi Prefecture Inside the Nagoya Plant of Ishikawajima-Harima Heavy Industries Co., Ltd. Ishikawa Shima-Harima Heavy Industries Co., Ltd. Nagoya Plant (56) References: Jingoji 2-2800 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) E21D 11/40

Claims (1)

(57) [Claims] 1. An erector rotating frame which is provided inside an excavating cylinder of a shield machine which excavates upward, a horizontally rotating erector rotating frame, a horizontally extending and retractable hanging beam attached to the erector rotating frame, and a tip of the hanging beam. An upward shield excavator, comprising: a wire for suspending a segment from the excavator.