JPH09273379A - Parent-child shield machine - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a parent-child shield machine in which the center lines of the excavation holes drilled by the parent machine and the child machine are different. SOLUTION: In a parent-child shield machine in which a main body of a child device 20 is arranged inside a parent device 10 and a parent device cutter head 11 composed of a child device cutter head 21 and an outer peripheral cutter 12, a child device cutter head 21 is used as the parent device. The base unit cutter head 11 and the handset unit cutter head 2 are arranged eccentrically with respect to the cutter head 11.
A parent-child shield machine with different rotation axes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parent-child shield machine.

[0002]

2. Description of the Related Art Conventionally, in a parent-child shield machine, a child machine cutter is arranged coaxially with the parent machine cutter in a central portion so that a center line of a tunnel excavated by the child machine and a center line of the tunnel excavated by the child machine coincide with each other. Was there.

However, the conventional parent-child shield machine has not been able to excavate a pipe top junction or pipe bottom junction tunnel suitable for sewerage as shown in FIGS. 7 and 8.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a parent-child shield machine in which the center lines of the excavation holes excavated by the parent machine and the child machine are different.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a parent-child shield machine in which a child machine main body is arranged in a parent machine, and a parent machine cutter head including a child machine cutter head and an outer peripheral cutter is provided.
The slave unit cutter head is eccentrically arranged with respect to the master unit cutter head, and the rotation axes of the master unit cutter head and the slave unit cutter head are different from each other so that the center line of the excavation hole drilled by the master unit and the slave unit is Parent-child shield machine characterized by shifting, or
In the parent-child shield machine, a parent-child shield machine or a parent-child shield machine, characterized in that the parent-child shield machine is provided with a rotary drive shaft movably arranged between a rotation axis of the parent machine cutter head and a rotation axis of the child machine cutter head. In the machine, a slave unit skin plate that is slidable is arranged on the outer periphery of the slave unit body, and when the slave unit digs, the slave unit skin plate is slid to the back of the slave unit cutter head. Is.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

<B> Outline of Parent-Child Shield Machine In the parent-child shield machine, for example, as shown in FIG. 1, the child machine 20 main body is installed in the parent machine skin plate 13, and the parent machine 10 is used to excavate a drilling hole. Alternatively, the slave unit 20 can be pulled out from the master unit 10, and the excavation hole can be excavated using the slave unit 20 to form different types of excavation holes.

The base unit 10 is driven by the base unit propulsion jack 14, and the handset unit 20 is driven by the handset unit promotion jack 25. It should be noted that although the configuration generally used for shield machines such as piping and erectors is omitted, it is naturally incorporated, for example, if it is an earth pressure type, a screw conveyor, or if it is a mud type, a sending and discharging mud pipe, etc. Is installed.

<B> Master Unit and Slave Unit Cutter Head The master unit cutter head 11 includes a slave unit cutter head 21 and an outer peripheral cutter 12 arranged on the outer periphery thereof, as shown in FIGS. 1 and 2, for example. Made of The rotation center A of the master cutter head 11 and the rotation center B of the slave cutter head 21 are eccentric, and the rotation axis is displaced by a distance e.

When the parent machine cutter head 11 is rotated, the child machine cutter head 21 and the outer peripheral cutter 12 are connected by, for example, a connecting jack 42, and the child machine cutter head 21 and the outer peripheral cutter 12 are integrally rotated. On the other hand, when the handset cutter head 21 is rotated, for example, the connection jack 42 releases the connection, and only the handset cutter head 21 is rotated.

<C> Rotary Drive Shaft The rotary drive shaft 30 for rotating the cutter head can be commonly used by the master unit 10 and the slave unit 20. For example, as shown in FIGS. 3 to 4, a guide 22 is provided on the rear surface of the cordless cutter head 21, and the guide 2 is provided in the guide groove 31 of the rotary drive shaft 30.
Insert 2. By moving means such as the second moving jacks 41, 41 attached to the rear surface of the cordless cutter head 21,
The rotary drive shaft 30 is movably attached to the back surface of the slave cutter head 21. The rotary drive shaft 30 is rotated by a cutter drive motor 32 via a cutter gear 36, for example.

One side of the second moving jacks 41, 41 is connected to the back surface of the slave cutter head 21, and the other side is connected to the tip of the rotary drive shaft 30. Second moving jack 41,
41 has a structure capable of sliding in a bearing hole 28 provided in the rotary drive shaft 30, a second moving jack slide seal 29 is provided at the inlet of the bearing hole 28, and earth and sand water to the piping portion of the second moving jack 41 is provided. Prevent infiltration.

In order to rotate the master cutter head 11, the second moving jacks 41, 41 are extended so that the center of the rotary drive shaft 30 is located at the rotation center A of the master cutter head 11. On the other hand, in order to rotate the slave cutter head 21, the second moving jacks 41, 41 are contracted so that the center of the rotary drive shaft 30 is located at the rotation center B of the slave cutter head 21.

The rotary drive shaft 30 is rotatably held by a holding member 33, and a brim portion 34 of the holding member 33 is movably fixed to a brim receiver 35. The holding member 33 can be fixed, for example, by moving it between the rotation axis of the parent machine cutter head 11 and the rotation axis of the child machine cutter head 21 with the first moving jack 40. Partition wall 24
A brim seal 37 is provided between the brim portion 34 and the brim portion 34 to prevent intrusion of earth and sand water from the sliding portion into the machine.

<D> Slave Skin Plate The slave skin plate 23 is movably attached to the partition wall 24. For example, when the cordless handset 20 is being dug, the cordless handset skin plate 23 is lower than the partition wall as shown in FIG.
As shown in FIG. 6, it slides near the rear surface of the cordless cutter head 21. The parent device slide seal 27 is provided between the parent device 10 and the child device skin plate 23, and the child device slide seal 26 is provided between the child device 20 and the child device slide seal 23 to prevent intrusion of earth and sand water from the face. .

The operation of the parent-child shield machine will be described below. <B> Master machine excavation The rotary drive shaft 30 is moved to the master machine cutter head 1 as shown in FIG.
The cutter drive motor 32 is driven in accordance with the rotation center A of the master unit 1 to drive the master cutter head 11, that is, the slave cutter head 2.
1 and the outer peripheral cutter 12 are integrally rotated, and a normal shield machine excavation operation is performed.

<B> Excavation of the slave unit For example, after the excavation of the master unit 10 is completed, the rotary drive shaft 30 is moved from the rotation center A of the master unit cutter head 11 to the slave unit cutter head 2.
Move to center B of 1. Therefore, for example, the first moving jack 40 is extended and the brim portion 34 of the holding material 33 is slid upward with respect to the brim receiver 35, so that the second moving jack 4
1 and 41 are contracted and the guide groove 31 of the rotary drive shaft 30 is slid upward along the guide 22.

The slave skin plate 23 is slid to the rear surface of the slave cutter head 21. Further, the connection jack 42 connecting the child device cutter head 21 and the outer peripheral cutter 12 is opened to release the connection. The cordless handset 20 drives the cordless handset cutter head 21 to rotate by the cutter drive motor 32, constructs the segment 50, and starts from the parent device 10 as shown in FIG. 6, for example.

In this way, by shifting the center of rotation of the parent cutter head 11 and the child cutter head 21, the center line 51 as shown in FIGS. , 51 can build different tunnels.

[0020]

According to the present invention, the following effects can be obtained. <a> It becomes possible to easily construct a pipe top joint and a pipe bottom joint. <B> An arbitrary tunnel junction can be obtained by changing the eccentric distance between the central axes of the parent machine cutter head and the slave machine cutter head. <C> Since all the work can be performed in the mine, the work can be performed safely.

[Brief description of drawings]

[Figure 1] Block diagram of parent-child shield machine

FIG. 2 is a front view of a master cutter head.

FIG. 3 is a plan view of the mounting positions of the cutter head and the rotary drive shaft.

FIG. 4 is a perspective view of a mounting position of a cutter head and a rotary drive shaft.

FIG. 5 is an explanatory diagram of preparation for starting the excavation of the child machine.

FIG. 6 is an explanatory view of when a child machine is being dug up.

FIG. 7 is a diagram showing pipe top joining.

FIG. 8 is a view showing bottom joints.

[Explanation of symbols]

 10 ... Parent machine 11 ... Parent machine cutter head 12 ... Peripheral cutter 13 ... Parent machine skin plate 14 ... Parent machine propulsion jack 20 ... Child machine 21 ... Child machine cutter head 22 ... Guide 23 ... Handset skin plate 24 ... Bulkhead 25 ... Handset propulsion jack 26 ... Handset slide seal 27 ... Base unit slide seal 28 ... Bearing hole 29. ..Second moving jack slide seal 30 ... Rotation drive shaft 31 ... Guide groove 32 ... Cutter drive motor 33 ... Holding material 34 ... Brim part 35 ... Head receiving 36 ... Cutter gear 37 ... Flange seal 40 ... First moving jack 41 ... Second moving jack 42 ... Connection jack

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiaki Uehara 11-1 Kitahama-cho, Chita-shi, Aichi Ishikawajima Harima Heavy Industries Co., Ltd. Aichi factory (72) Inventor Hiroyuki Ito 11-1 Kitahama-cho, Chita-shi, Aichi Ishikawajima Harima Heavy Industries Ltd. Aichi factory

Claims (3)

[Claims] 1. In a parent-child shield machine having a child machine main body arranged in the parent machine and having a parent machine cutter head including a child machine cutter head and an outer peripheral cutter, the child machine cutter head is biased with respect to the parent machine cutter head. A parent-child shield machine, which is characterized in that the center line of the excavation hole excavated by the parent machine and the child machine is deviated by differentiating the rotation axes of the parent machine cutter head and the child machine cutter head. 2. The parent-child shield machine according to claim 1, further comprising a rotary drive shaft movably arranged between a rotary shaft of the master cutter head and a rotary shaft of the slave cutter head. Yes, a parent-child shield machine. 3. The parent-child shield machine according to claim 1, wherein a child machine skin plate that is slidable is arranged on the outer periphery of the child machine body, and when the child machine digs, the child machine skin plate is attached to the child machine cutter head. A parent-child shield machine that slides to the back.