JP3735827B2 - Parent-child shield machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a parent-child shield machine composed of a parent machine and a child machine used for shield construction with different diameters.
[0002]
[Problems to be solved by the invention]
A conventional parent-child shield machine is configured such that the axis of the parent machine coincides with the axis of the child machine. For this reason, conventionally, only a construction in which a small-diameter shield is joined to an axial center portion of a large-diameter shield can be performed. However, in the case of sewerage etc., there is a case where the shaft center joint is not rational. Therefore, there has been a demand for a technique for joining the small diameter shield to a position eccentric from the axis of the large diameter shield.
[0003]
OBJECT OF THE INVENTION
The present invention has been made to solve the above problems, and provides a parent-child shield machine capable of joining a small-diameter shield to a position eccentric from the axis of the large-diameter shield. The purpose is to do.
[0004]
[Means for Solving the Problems]
As means for solving the above-mentioned problems, the present invention provides, as claimed in claim 1, a parent-child shield machine in which a child machine is arranged in the parent machine, and is eccentric with respect to the parent machine in a hood side end portion of the parent machine. A rotating drum that is rotatably arranged at a position, a slave device that is eccentric with respect to the rotating drum in the rotating drum and that is concentrically positioned with the master device, and a cutter head equipped on the slave device. A parent-child shield machine is provided which is configured to move the child machine to a position eccentric with respect to the parent machine by rotating the rotating drum together with the child machine.
[0005]
According to a second aspect of the present invention, in the parent-child shield machine according to the first aspect, the cutter head has a central cutter having an outer diameter substantially equal to the cross section of the child machine and an outer diameter substantially equal to the cross section of the rotary drum. An intermediate cutter disposed around the center cutter and at an eccentric position with respect to the center cutter, and having an outer diameter substantially equal to the cross-sectional area of the master unit, around the rotating drum. And an outer peripheral cutter arranged at a position eccentric with respect to the rotating drum, and the center cutter and the intermediate cutter are engaged with each other by using an engaging member so that the center cutter and the intermediate cutter can be rotated together. The three cutters are engaged with each other using the engaging member, and the three cutters are configured to be rotatable together. Further, the engagement between the cutters by the engaging member is released, and only the central cutter is released. Can rotate Characterized in that the the parent-child sheet - providing a shield machine.
[0006]
Further, as a third aspect of the present invention, in the parent-child shield machine according to the first or second aspect, a slide hood that protrudes to the vicinity of the back surface of the cutter head is provided on the outer periphery of the skin plate of the child machine. A parent-child shield machine is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<A> Master Unit As shown in FIGS. 1 and 2, the master unit 1 has a front partition 12 and a rear partition 13 in the end of the hood side of the cylindrical skin plate 11 at intervals. Necessary equipment such as a jack for propulsion, a soil removal device, and an erector are installed in the master unit 1 in the same manner as a normal shield machine.
[0008]
<B> Rotating drum The rotating drum 2 is a hollow cylindrical body, and is disposed between the front partition wall 12 and the rear partition wall 13 of the master unit 1 at a position eccentric with respect to the master unit 1. The rotating drum 2 is configured to be rotatable by a drum rotating motor 21. Further, an opening 22 for accommodating a slave unit 3 described later is opened on the front surface of the rotary drum 2.
[0009]
<C> The slave unit 3 has a partition wall 32 that is flush with the front partition wall 12 of the master unit 1 on the front surface of the cylindrical skin plate 31. The slave unit 3 is accommodated in the rotary drum 2 through the opening 22 of the rotary drum 2. The storage position is a position that is eccentric with respect to the rotary drum 2 and is concentric with the base unit 1.
[0010]
At the center of the partition wall 32, a rotating shaft 33 for rotating a cutter head 4 described later is provided. A cylindrical slide hood 34 that slides in the axial direction and protrudes to the vicinity of the back surface of the cutter head 4 is provided on the outer periphery of the skin plate 31. The slide hood 34 can be slid by a hood slide jack 35 provided in the axial direction.
[0011]
Note that the position where the slave unit 3 is assembled is a position where the slave unit 3 is rotated and moved with respect to the master unit 1 to be the final shield structure. In the case of this embodiment, the small diameter shield is joined to the top of the large diameter shield. However, when joining to the bottom or middle part of the large diameter shield, the position adapted to it. The handset 3 is incorporated in
[0012]
<D> Cutter head The cutter head 4 has a center cutter 41 having an outer diameter substantially equal to the cross section of the slave unit 3, an outer diameter substantially equal to the cross section of the rotary drum 2, and is around the center cutter 41, and The intermediate cutter 42 arranged at a position eccentric with respect to the central cutter 41 and a position having an outer diameter substantially equal to the cross-sectional range of the main unit 1 and around the rotating drum 2 and eccentric with respect to the rotating drum 2 And an outer peripheral cutter 43 provided in FIG.
[0013]
And these three cutters are comprised by the engagement jack 5 and the engagement pin 6 so that engagement is possible, as shown in FIG. Specifically, the groove 44 provided annularly on the inner peripheral surface of the outer cutter 43 and the protrusion 45 provided annularly on the outer peripheral surface of the intermediate cutter 42 are matched so that the intermediate cutter 42 and the outer cutter 43 are in the axial direction. It is configured not to slip.
[0014]
An engagement jack 5 is provided in the center cutter 41 in a direction orthogonal to the shield axis, and the rod 51 is configured to expand and contract in the radial direction toward the outer periphery. As shown in FIGS. 2 and 3, the engagement jack 5 a provided in the portion where the thickness of the intermediate cutter 42 is the smallest is configured such that the rod 51 penetrates the intermediate cutter 42 and directly fits into the outer cutter 43. Has been.
[0015]
On the other hand, an engaging pin 6 a is provided in the portion where the thickness of the intermediate cutter 42 is maximum, and the entire length is accommodated in the intermediate cutter 42 and can be fitted in the outer cutter 43. The engagement jack 5 b provided in this portion is used for pushing or pulling the engagement pin 6 a into the outer cutter 43 by expanding and contracting the rod 51.
[0016]
When the engaging pin 6a is located at the top of the shield, there is no problem because it falls by its own weight and comes off from the outer cutter 43. However, when it is located at other places, the engaging pin 6a is removed from the outer cutter 43. It must be forcibly pulled out. In that case, for example, as shown in FIG. 4, a taper-like engagement portion 52 that can be expanded and contracted is provided at the tip of the rod 51, and the engagement pin 6a is smaller than when the engagement portion 52 is expanded. It is conceivable that a taper-shaped engagement hole 61 is opened so that the engagement pin 6a can be pulled back by a frictional resistance force when the two match.
[0017]
As shown in FIG. 4, the engagement pin 6 a is formed to have a larger diameter than the rod housing hole 53. Thus, when the rod 51 is completely stored in the rod storage hole 53, the engaging portion 52 is detached from the engaging hole 61 and the engaging pin 6a is left in the intermediate cutter 42. Can be rotated.
[0018]
Further, as shown in FIG. 2, an engagement pin 6 b and an engagement jack 5 c that are shorter than the engagement pin 6 a are respectively provided at two opposing positions where the thickness of the intermediate cutter 42 is medium. Yes. The structure of the engagement pin 6b and the engagement jack 5c is the same as that of the engagement pin 6a and the engagement jack 5b. Note that the above-described engagement structure of the cutter head 4 is merely an example, and another structure may be employed. For example, the case where the engagement jack is provided in the intermediate cutter 42 or the outer cutter 43 can be considered.
[0019]
[Drilling method]
Next, a method for digging the parent-child shield machine configured as described above will be described. When the master unit 1 is dug, the slave unit 3 is arranged at a position that coincides with the axis of the master unit 1 as shown in FIGS.
[0020]
As shown in FIG. 3, the cutter head 4 extends the rod 51 of each engagement jack 5, engages the center cutter 41, the intermediate cutter 42, and the outer cutter 43, and rotates the cutter head 4 as a whole. . Thereby, excavation of the cross-sectional area of the main | base station 1 is attained.
[0021]
When the master machine 1 digs a predetermined distance, the slave machine 3 is prepared for separation start. First, as shown in FIG. 5, the rod 51 of each engagement jack 5 is contracted, and the engagement between the outer cutter 43 and the intermediate cutter 42 by the rod 51 itself or by the engagement pin 6 is released. Next, the rotating drum 2 is rotated by the drum rotating motor 21, and the center cutter 41 and the intermediate cutter 42 are also rotated together.
[0022]
As shown in FIG. 6, the rotating drum 2 is rotated until the position of the slave unit 3 reaches the top of the shield, and then stopped. Then, after further reducing the rod 51 of each engagement jack 5 and releasing the engagement between the center cutter 41 and the intermediate cutter 42, the child device 3 is separated and started from the parent device 1. When the child machine 3 is started, the slide hood 34 is protruded to the vicinity of the back surface of the center cutter 41, and the tail plate, the earth removing device, the erector and the like are prepared.
[0023]
【The invention's effect】
Since the present invention is as described above, the following effects can be expected.
<A> By rotating the rotating drum together with the slave unit, the slave unit can be started from a position eccentric with respect to the axis of the master unit. Therefore, the small-diameter shield can be joined at a position eccentric from the axis of the large-diameter shield, and shield construction suitable for sewerage can be performed.
[0024]
<B> By changing the diameter of the rotating drum, the eccentricity of the separation start position of the slave unit can be freely changed. Therefore, the joining position of the small-diameter shield with respect to the large-diameter shield can be freely changed, and the construction versatility is excellent.
[0025]
<C> Since the slave unit can be moved eccentrically and separated and started in the shield machine, it is safe.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view showing a master machine excavation state of the present invention. FIG. 2 is a front view showing a master machine excavation state of the invention. FIG. 3 is a cross-sectional view of a cutter head. Cross-sectional view [FIG. 5] Explanatory view showing movement of the handset to an eccentric position [FIG. 6] Explanatory view showing the start-up ready state of the handset

Claims (3)

In a parent-child shield machine with a child machine in the parent machine,
A rotating drum that is rotatably disposed at a position eccentric with respect to the parent device in the hood side end of the parent device;
In this rotary drum, a slave unit arranged at a position eccentric to the rotary drum and concentric with the master unit,
It has a cutter head equipped on this handset,
By rotating the rotating drum together with the slave unit, the slave unit is configured to move to a position eccentric with respect to the master unit.
Parent-child shield machine. The parent-child shield machine according to claim 1,
The cutter head has a center cutter having an outer diameter substantially equal to the cross section of the slave unit,
An intermediate cutter that has an outer diameter substantially equal to the rotary drum cross section, is disposed around the center cutter and is eccentric to the center cutter;
The outer cutter has an outer diameter substantially equal to the cross-sectional range of the main unit, and is arranged around the rotating drum and at an eccentric position with respect to the rotating drum,
The center cutter and the intermediate cutter are engaged with each other using the engaging member, and the center cutter and the intermediate cutter are configured so as to be integrally rotatable,
Engage the three cutters using the engagement member, and configure the three cutters to be integrally rotatable,
Further, the engagement between the cutters by the engagement member is released, and only the center cutter can be rotated.
Parent-child shield machine. In the parent-child shield machine according to claim 1 or 2,
The outer periphery of the skin plate of the slave unit is provided with a slide hood that protrudes to the vicinity of the back surface of the cutter head,
Parent-child shield machine.

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