JP3314586B2 - Hydraulic piping separation device for shield machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield machine provided with hydraulic devices such as a copy cutter device and a slit opening / closing device on an outer cutter, and more particularly, to a hydraulic pipe separation for separating these hydraulic devices from an inner cutter. Related to the device.

[0002]

2. Description of the Related Art As shown in FIG. 5, a small-diameter shield 2 is accommodated inside a large-diameter shield 1, and an outer cutter 4 for the large-diameter shield 1 is detachably mounted on the outer periphery of the inner cutter 3 for the small-diameter shield 2. The outer cutter 4 and the inner cutter 3 need to be separated from each other when the shield machine 5 is attached to the vehicle. Generally, the cutter of the shield machine is provided with hydraulic devices such as a copy cutter device that protrudes from the outer edge of the cutter by hydraulic pressure, a slit opening / closing device for adjusting the area of the sediment intake opening, and a wear detection bit device. (Both are well-known technologies and are not shown).

[0003]

However, even if such a hydraulic device is to be mounted on the outer cutter 4 of the shield machine 5, it is necessary to separate the inner cutter 3 and the outer cutter 4 from each other. Piping equipment cannot be used as it is. That is, if the conventional piping device is used as it is, when the inner peripheral cutter 3 and the outer peripheral cutter 4 are separated, the hydraulic piping for sucking and discharging the oil to the hydraulic equipment cannot be separated, and the separation becomes impossible. Therefore, development of a hydraulic piping separation device that can cope with the shield machine 5 has been desired.

SUMMARY OF THE INVENTION An object of the present invention, which has been made in view of the above circumstances, is to provide a shielded machine hydraulic pipe separating device in which a hydraulic device can be provided inside an outer peripheral cutter of a shielded machine in which a cutter unit is separated. Is to do.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for separating or starting a small-diameter shield from a large-diameter shield, comprising the steps of:
In a shield machine in which an outer cutter for a large-diameter shield is detachably mounted, a mechanism that functions by hydraulic pressure is provided inside the outer cutter, and inside the inner cutter,
A manifold that engages with the manifold of the hydraulic device and sucks and discharges oil is provided so as to be movable forward and backward.

When the inner cutter for the small-diameter shield and the outer cutter for the large-diameter shield are connected and used integrally, the manifold in the inner peripheral cutter is moved outward in the radial direction. Engage with the manifold in the outer cutter. Then, oil is sucked and discharged from the manifold in the outer cutter through the manifold in the inner cutter, and the hydraulic equipment in the outer cutter is operated.

[0007] When separating the inner cutter from the outer cutter, the manifold in the inner cutter may be moved radially inward to separate from the manifold in the outer cutter. Thus, the inner peripheral cutter and the outer peripheral cutter can be separated from each other without obstructing the hydraulic piping. Ma
In addition, a manifold provided to be able to advance and retreat inside the inner peripheral cutter.
The holder extends radially outward from the outer circumference of the inner cutter.
Submerged and also serves as a copy cutter for the small-diameter shield.
You may. Also, the inner peripheral cutter is provided inside the inner peripheral cutter.
The cutter is projected radially outward from the outer circumference of the cutter, and
A detaching means for engaging and disengaging with the terminal may be provided. Also, the above desorption
The means also serves as a copy cutter for the small-diameter shield.
You may.

[0008]

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

In the shield machine 5 shown in FIG. 5, an outer cutter 4 for the large-diameter shield 1 is detachably mounted on the outer periphery of the inner cutter 3 for the small-diameter shield 2 so that the small-diameter shield 2 can be started from the large-diameter shield 1. It is configured to be attached to. These inner and outer cutters 3, 4 are integrated when excavating the large-diameter tunnel 6, and are cut off when the small-diameter tunnel 7 is formed continuously with the large-diameter tunnel 6. I have.

FIG. 3 shows an example of a front view of the inner and outer cutters 3 and 4. As shown in FIG.
Is composed of an inner peripheral spoke 3a, an inner peripheral slit 3b and an inner peripheral cutter face plate 3c. The outer peripheral cutter 4 includes an outer peripheral spoke 4a, an outer peripheral slit 4b, and an outer peripheral cutter face plate 4c. Also, on the outer peripheral cutter 4,
Hydraulic devices such as a copy cutter device 8, a slit opening / closing device 9, and a wear detection bit device (not shown) are provided. In the figure, reference numeral 10 denotes a cutter bit.

[0011] Between the inner cutter 3 and the outer cutter 4,
A detaching means 11 is provided. The detaching means 11 is shown in FIG.
As shown in the figure, the inner cutter 3 is attached to and detached from the inner cutter 3. The inner cutter 3 and the outer cutter 4 are connected to each other by extending and contracting the detachable jacks 12 to disengage the insertion holes of the outer cutter 4. What separates. Therefore, the thrust and torque acting on the inner peripheral cutter 3 are reduced by the attaching / detaching means 11.
And transmitted to the outer peripheral cutter 4.

As shown in FIG. 3, oil is supplied from the inner peripheral cutter 3 side to hydraulic equipment such as the copy cutter device 8 and the slit opening / closing device 9 inside the outer peripheral cutter 4 at a portion where the attaching / detaching means 11 is not provided. A hydraulic pipe separation device 13 for sucking and discharging is provided. The hydraulic pipe separation device 13 is shown in FIG.
As shown in the figure, an inner peripheral manifold 15 that engages with the outer peripheral manifolds 14 of the hydraulic devices 8 and 9 inside the outer peripheral cutter 4 to suck and discharge oil is provided inside the inner peripheral cutter 3 so as to be able to move radially outward. It is provided and configured.

More specifically, inside the outer peripheral cutter 4, hydraulic equipment such as a copy cutter device 8 and a slit opening and closing device 9 and an outer peripheral manifold 14 connected to the hydraulic equipments 8 and 9 via a rubber hose 16 and the like are provided. Is provided.
The oil intake and exhaust passages 17 and 1 are provided inside the outer peripheral manifold 14.
7 are provided. Also, inside the inner peripheral cutter 3,
An inner peripheral manifold 15 that is movable radially outward to engage and disengage with the outer peripheral manifold 14;
And a separation jack 18 for moving the 5 forward and backward. Inside the inner circumferential manifold 15, oil suction and discharge passages 19 and 1 communicating with the oil suction and discharge passage 17 of the outer circumferential manifold 14 are provided.
9 are provided.

FIG. 4 shows a connection portion between the inner peripheral manifold 15 and the outer peripheral manifold 14. As shown in the figure, two convex portions 20 and 20 are provided at the end of the inner peripheral manifold 15, and two concave portions 2 are provided at the end of the outer peripheral manifold 14.
Numerals 1 and 21 are provided, and these are respectively engaged so that the oil suction / discharge passages 17 and 19 communicate with each other. That is, the convex portion 20 of the inner peripheral manifold 15 is disengaged from the concave portion 21 of the outer peripheral manifold 14 by moving the inner peripheral manifold 15 radially outward. At the time of the engagement, the oil suction / discharge passage 1 of the inner peripheral manifold 15 is
9 communicates with the oil suction / discharge passage 17 of the outer peripheral manifold 14.

An O-ring 22 is provided on the outer peripheral portion of the convex portion 20 to prevent oil from leaking between the convex portion 20 and the concave portion 21 at the time of engagement. Hydraulic hoses 23 are respectively connected to the openings of the oil suction / discharge passages 19 opened at the ends of the inner peripheral manifold 15. These hydraulic hoses 23 are drawn into the downhole through a rotary shaft (not shown) through the rotary shaft of the cutter, so that oil is appropriately sucked and discharged.

The operation of the present embodiment having the above configuration will be described.

As shown in FIG. 5A, when the inner cutter 3 for the small-diameter shield 2 and the outer cutter 4 for the large-diameter shield 1 are connected and used integrally, the inner cutter is used. 3 and the outer cutter 4 are integrated by the attaching / detaching means 11, and the inner manifold 15 in the inner cutter 3 is moved radially outward by the separation jack 18, so that the convex portion 22 is formed into the concave portion 21 of the outer manifold 14. To be engaged.

Then, the oil suction / discharge passages 19 in the inner peripheral manifold 15 communicate with the oil suction / discharge passages 17 in the outer peripheral manifold 14, respectively. Therefore, by sucking and discharging oil from the inner peripheral cutter 3 side to the hydraulic equipments 8 and 9 in the outer peripheral cutter 4 via the oil suction and discharge passages 17 and 19, the hydraulic equipment (the copy cutter device 8, the slit opening and closing device 9, the wear and Sensing bit device, etc.).

As shown in FIG. 5B, when the inner peripheral cutter 3 and the outer peripheral cutter 4 are separated from each other, the detaching means 11 is operated to separate the inner peripheral cutter 3 from the outer peripheral cutter 4 and to separate the inner peripheral cutter 3 from the outer peripheral cutter 4. As shown in b), the inner manifold in the inner cutter 3 is moved radially inward by the separation jack 18 to separate the inner manifold 15 from the outer manifold 14. Thereby, the inner cutter 3 and the outer cutter 4 can be separated from each other without causing a problem such as tearing of the hydraulic hose.

After the small-diameter shield 2 is started from the large-diameter shield 1, the inner peripheral manifold 15 protrudes and retracts from the outer edge of the inner peripheral cutter 3 by expanding and contracting the separation jack 18. It may be used as a copy cutter for the small diameter shield 2. In this case, it is preferable that the distal end portion of the inner peripheral manifold 15 is formed from a wear-resistant material. Further, the attaching / detaching means 11 shown in FIG. 2 can also be used as a copy cutter for the small-diameter shield 2.

It should be noted that the present invention is not limited to the above-mentioned parent-child shield, and a small-diameter shield can be used within a large-diameter shield.
The right angled shield or vertical
It may be applied to a spherical shield such as a horizontal shield.

[0022]

In summary, according to the present invention, the inner peripheral cutter and the outer peripheral cutter can be separated from each other without causing a problem such as tearing of the hydraulic hose. A hydraulic device such as a copy cutter device can be provided on the outer cutter.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a copy cutter of a parent-child shield showing one embodiment of the present invention.

FIG. 2 is a diagram showing a detachable jack for detaching an inner cutter and an outer cutter.

FIG. 3 is a front view of an inner cutter and an outer cutter.

FIG. 4 is a view showing a joint portion between an inner peripheral manifold and an outer peripheral manifold.

FIG. 5 is a schematic diagram showing a parent-child shield.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Large diameter shield 2 Small diameter shield 3 Inner circumference cutter 4 Outer circumference cutter 5 Shield machine 8 Copy cutter device as hydraulic equipment 9 Slit opening and closing device as hydraulic equipment 14 Outer circumference manifold 15 Inner circumference manifold

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-1977791 (JP, A) Registered utility model 3007986 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 9 / 06 301-302 E21D 9/08

Claims (4)

(57) [Claims] 1. A shield machine in which an outer peripheral cutter for a large diameter shield is detachably attached to an outer periphery of an inner peripheral cutter for a small diameter shield so as to separate or start the small diameter shield from the large diameter shield. A hydraulic device that functions by hydraulic pressure is provided inside, and a manifold that engages with the manifold of the hydraulic device and sucks and discharges oil is provided inside the inner peripheral cutter so as to be able to advance and retreat. Pipe separation device. 2. A reciprocating means is provided inside the inner peripheral cutter.
From the outer circumference of the inner circumferential cutter
Appears outward and doubles as copy cutter for small-diameter shield
2. The hydraulic pipe separation of a shield machine according to claim 1,
apparatus. 3. The inner peripheral cutter is provided inside the inner peripheral cutter.
From the outer circumference of the taper to the outside in the radial direction,
3. The seal according to claim 1, further comprising a detachable means for engaging and disengaging.
Hydraulic piping separation device for machine. 4. The method according to claim 1, wherein the detaching means is a copy of a small-diameter shield.
4. The shield machine according to claim 3, which also functions as a cutter.
Hydraulic piping separation device.