JP3059128B2 - Underground obstacle cutting and removing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground obstacle cutting and removing device for cutting piles and continuous walls remaining in the ground and removing the cut piles and continuous walls. .

[0002]

2. Description of the Related Art Conventionally, when constructing a lateral cave (for example, a subway or an underpass) in an urban area, construction piles or continuous walls (hereinafter referred to collectively as "underground obstacles"). ) May appear. Therefore, conventionally, the location of these underground obstacles was investigated by prior investigation, and after excavating and removing from the ground, a tunnel excavator (in the invention according to this application, a shield excavator for excavating a soft stratum, an excavation for a hard rock layer) (Including all tunnel excavators that excavate complex formations, etc.).

[0003] However, since such underground obstacles include debris of construction piles and old ones not recorded, it is often difficult to investigate in advance. There is a risk of damaging the cutter bits of the excavator and parts of the earth removal device.

[0004] Examples of such underground obstacles include earth retaining piles (shape steel), continuous walls (shape steel + concrete) or reinforced concrete walls in which piles are juxtaposed, and PHC piles (reinforced concrete piles). Yes, if it cannot be removed from the ground, it will be removed from inside the tunnel excavator, but in this case, after improving the surface of the facet by injecting chemicals etc. and stabilizing it, set up work to build a scaffold underground After that, the worker comes out to the front of the excavator and cuts the iron pole of the pile or performs concrete hanging work. However, underground work requires a lot of time and effort because of poor environment and inefficient work.

[0005] In addition, when going out to the ground to carry out work, it is necessary to consider the use of an auxiliary construction method that also carries out construction with the use of compressed air for the protection of the ground. I can't work. Therefore, in recent years, cutting work using ultra-high pressure jet water (hereinafter referred to as “water jet”) has been performed.

As a conventional technique for performing such water jet cutting, for example, Japanese Patent Application Laid-Open No. 64-625
There is an invention described in Japanese Patent Publication No. 96, and in this invention, a cutting fluid ejection nozzle is provided at a position close to the outer periphery of a cutter head of a shield excavator, and high pressure water mixed with an abrasive is supplied from the ejection nozzle to an obstacle in front of the shield excavator. By moving the spray nozzle in the cross direction of the obstacle while spraying toward the obstacle, an attempt is made to cut the obstacle with high-pressure water.

[0007]

However, when cutting is performed by the above method, an obstacle cut only at a position close to the outer periphery of the cutter head remains at the front of the cutter head. In the case of a PHC pile or the like with a reinforcing bar, it is not possible to cut the pile further finely with a cutter bit. Therefore, cutting the pile only at the outer peripheral portion is too large to cut the pile, and the pile cannot be taken into the shield machine.

Further, in this method, in order to move the spray nozzle to a position where the obstacle at the outer circumferential position of the cutter head can be cut and spray high-pressure water, it is necessary to detect that the spray nozzle has reached the outer circumferential position. However, in order to detect a position where an obstacle can be cut, an operator needs to visually check or use a sensor close to that, which is difficult with the current technology.

Moreover, even if the obstacle is cut, there is a risk that the cut piece may fall, and as described above, a device for efficiently taking the cut piece into the shield machine and removing it reliably has been established. Not.

[0010]

Therefore, in order to solve the above-mentioned problems, the invention according to the present application is to move the cutting device in the radial direction when an underground obstacle appears at the front of the cutter disc, and to determine the cutting position. The underground obstacle is cut to a predetermined length by a water jet while being gripped by a gripping member, and the cut underground obstacle can be taken into the chamber while being gripped and removed.

By cutting the underground obstacle while holding the underground obstacle in this manner, the cut underground obstacle is reliably held, and the cut underground obstacle is taken into the chamber following the cutting operation. Can be removed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to this application is to cut a subsurface obstacle by injecting a water jet toward an underground obstacle in front of a cutter disc and moving in a direction perpendicular to the direction of jetting the water jet. A cutting device is provided by providing a nozzle device having a nozzle to be mounted, a slide device that supports the nozzle device and moves in the radial direction of the cutter disk, and a slide device that slides the slide device in the radial direction of the cutter disk. , This cutting device ,
Rutotomoni provided sliding means for moving the nozzle device in the cutter disk surface and perpendicular, the cutting device Sula
The axis perpendicular to the radial direction of the cutter disk
Rotate the nozzle device to the face or chamber side around the center
And a gripping member for gripping and holding the underground obstacle when the underground obstacle is cut by the nozzle.

By moving the slide device to the underground obstacle cutting position in front of the cutter disk, the nozzle device is moved in a direction perpendicular to the cutter disk surface, and the underground obstacle on the front surface of the cutter disk is removed at a predetermined position. By grasping with a gripping member and moving the nozzle in the direction perpendicular to the jetting direction while ejecting a water jet from the nozzle toward the underground obstacle, it is possible to cut with a water jet while grasping the underground obstacle with the grasping member in-out, underground obstacles after cutting, the chamber of the nozzle device after cutting
If you turn to the side, cut underground obstacles into the chamber
Can be captured.

When an abrasive water jet mixed with an abrasive is used for the water jet sprayed from the nozzle, an earth retaining pile (shape steel) or a continuous wall (shape steel + Metals such as concrete), reinforced concrete walls, and PHC piles (reinforced concrete piles) can also be cut easily. The sliding means may be any means that can be moved in the axial direction, and for example, a cylinder or the like can be used.

[0015]

Further, if the nozzle device is provided with a moving means for moving the nozzle in the water jet spraying direction,
The gap between the underground obstacle and the nozzle member can be easily adjusted.

Further, if the nozzle device is provided with a rotating means for rotating the nozzle about an axis parallel to the water jet spraying direction, only the nozzle member is rotated in a state where the underground obstacle is grasped by the grasping member. By moving, the underground obstacle can be cut within a predetermined range.

At this time, if a gripping member is provided substantially at the center of rotation of the nozzle, the underground obstacle can be cut while the center of the underground obstacle to be cut is gripped.

Further, by providing an inclining means for inclining the nozzle device by a predetermined angle from the direction perpendicular to the cutter disk surface, even an inclined underground obstacle can be cut while being grasped.

According to such an apparatus, the gripping member is projected from the cutter disk toward the underground obstacle in front of the cutter disk to grip the underground obstacle, and the underground obstacle is gripped. Inject a water jet from the nozzle to cut both cuts of the underground obstacle, remove the underground obstacle by rotating the gripping member holding the cut underground obstacle into the chamber Can efficiently cut and remove underground obstacles.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the invention according to the present application will be described below with reference to the drawings. FIG. 1 is a drawing showing a cutter disk provided with an underground obstacle cutting and removing device showing one embodiment of the invention according to this application, (a) is a front view, and (b) is a side sectional view. FIG. 2 is a drawing showing the relationship between the underground obstacle cutting and removing device and the cutter disk, where (a) is a front view and (b)
Is a side view, and (c) is a plan view. FIG. 3 is a plan view showing a cutting device of the underground obstacle cutting and removing device, FIG. 4 is a side view thereof, and FIG. 5 is a front view thereof. FIG. 6 is a front view showing a nozzle device provided in the cutting device, FIG. 7 is a side view thereof, and FIG. 8 is a plan view thereof.

As shown in the figure, the underground obstacle cutting and removing device M is provided on the back of a cutter disk D provided at the front of the shield machine, and the underground obstacle cutting and removing device M is provided.
Is provided with a cutting device E that moves in the radial direction within the chamber C on the back of the cutter disk D.

A predetermined opening 1 is formed in the front surface of the cutter disk D on which the cutting device E moves in a radial direction from the axial center position to the outer peripheral position. Underground obstacle P that appeared (pile)
Is configured to be cut and removed.

The cutting device E includes a cutter disk D
A slide device S having a slide member 4 that moves along a guide rod 3 supported by a support member 2 provided on the back surface of the device, and a cylinder 5 serving as a slide means for sliding the slide device S in the radial direction of the cutter disk D
Is provided. The rear end of the cylinder 5 is supported by the support member 5a of the cutter disk D, and the slide member 4 of the slide device S is moved in the radial direction of the cutter disk D by expanding and contracting. The stroke of the cylinder 5 only needs to be able to move the slide device S by substantially the radial distance of the cutter disk D. Further, in this embodiment, by providing two parallel guide rods 3, the sliding device S is prevented from rolling during sliding. The sliding means is only required to be able to move the sliding device S in the radial direction, and may be other than the cylinder 5.

The slide device S is provided with a nozzle device T having a nozzle 6 for jetting a water jet toward an underground obstacle P in front of the cutter disk D. In the nozzle device T, a supporting base slide member 7 is supported by a slide rod 9 provided on a slide frame 8 movable in a direction perpendicular to the cutter disk surface. By extending and contracting a cylinder 10 provided between the cutter discs D, the cutter disc D can be moved in the axial direction along the slide rod 9. In this embodiment, 2
The provision of the slide rod 9 allows the slide member 7 to always slide in the direction perpendicular to the cutter disk surface. The slide rod 9 and the cylinder 10 constitute a slide means.

Further, the nozzle 6 of the nozzle device T provided in the cutting device E is supported by a front and rear slider 12, and the front and rear slider 12 is
The left and right sliders 13 are attached so as to be slidable along the upper groove member 11.
Are supported by a traversing slide rod 15 provided at

The front and rear slider 12 can be moved in the direction of water jet injection by a pushing cylinder 16 as a moving means, and the nozzle 6 can be moved closer to or away from the underground obstacle P by expanding and contracting the pushing cylinder 16. .

The left and right sliders 13 are configured to be movable left and right by a feed chain 18 driven by a feed motor 17 provided on the nozzle frame 14, and rotate around a plurality of sprockets 19. The moving feed chain 18 is configured to be movable in the left and right full width directions of the nozzle frame 14. The movement width of the nozzle 6 is a width that can cut the underground obstacle P.

The water jet sprayed from the nozzle 6 is applied to an abrasive water jet.
rjet) (a water jet mixed with an abrasive, hereinafter simply referred to as a “water jet”), the underground obstacle P using a metal material as described above
However, it can be easily cut.

When the underground obstacle P is cut by the nozzle device T having such a nozzle 6, the underground obstacle P
The gripping member 20 is provided for gripping and holding the underground obstacle P. The gripping member 20 is provided substantially parallel to the nozzle device T, and
4 is provided at the tip of a support frame 21 that supports a bracket 14a provided at a lower part of the support frame 4. This gripping member 2
0 indicates that the gripping material 22 that rotates left and right is supported by a support shaft 23 provided at the tip of the support frame 21.
2 is opened and closed by a jack 24 provided on the support frame 21 so that the underground obstacle P can be gripped between the gripping members 22.

At the rear end of the support frame 21, there is provided a motor 25 which is a rotating means for rotating the nozzle device T around the axis of the support frame 21.
Is driven so that the nozzle 6 can be turned upward or downward of the gripping member 20.

In this embodiment, the gripping member 20 is provided substantially at the center of rotation of the nozzle 6, and the position of the center of gravity of the underground obstacle P cut by the nozzle 6 can be gripped by the gripping member 20. It is configured.

In this embodiment, the nozzle frame 1
A support member 26 is provided between the support frame 21 supporting the support member 4 and the slide member 7.
A tilting motor 27 is provided as tilting means for tilting the nozzle 6 and the gripping member 20 by a predetermined angle from a direction perpendicular to the cutter disk surface. By driving the tilting motor 27, the gripping member is rotated about the axis v. 20 and the nozzle device T can be tilted at the same angle. Note that the nozzle 6 may be directly tilted and attached to the front and rear slider 12.

Further, in this embodiment, the cutting device E
A jack 29 is provided as rotating means for rotating the slide frame 8 about a shaft 28 in a direction perpendicular to the sliding direction of the cutting device E to rotate the cutting device E to the face side or the chamber side. This jack 29
Has a rear end supported by the slide member 4, and a front end connected to a shaft 28 fixed to the slide frame 8 via a link member 30. It is configured such that E can be turned to the cutter disk D side or the chamber C side. This rotation angle is about 9
If it is 0 degree, it can be turned to the face side or the chamber side.

According to the underground obstacle cutting and removing apparatus M of this embodiment configured as described above, the underground obstacle P can be cut and removed as follows.

That is, if an underground obstacle P appears at the front of the cutter disk D during excavation, the slide device S is moved to a predetermined position along the guide rod 3 and the cylinder 10 is extended to thereby slide the slide member 7. Is moved along the slide rod 9 and the gripping member 20 is projected from the cutter disk D together with the nozzle device T. Then, by operating the jack 24, the underground obstacle P is gripped by the gripping member 22 of the gripping member 20.

In this way, the underground obstacle P is gripped by the member 2
In a state where it is grasped at 0, a water jet is jetted from the nozzle 6 of the nozzle device T to cut one side (upper side) of the underground obstacle P.

When cutting the underground obstacle P, a feed chain whose speed is controlled by the feed motor 17 while cutting the underground obstacle P by jetting a water jet toward the underground obstacle P side 18 left and right slider 1
3 is moved at a constant speed in the lateral direction to be cut. At this time, the cutting position is set by moving the front and rear slider 12 by the pushing cylinder 16 to move the nozzle 6 close to or away from the underground obstacle P, and to optimize the distance between the underground obstacle P and the nozzle 6. Cutting efficiency can be improved. The front and rear sliders 12 do not operate during cutting.

A high-pressure water supply hose and an abrasive supply hose (not shown) are supplied to the nozzle 6.
An abrasive water jet is jetted from the tip of the nozzle 6 toward the underground obstacle P.

After cutting one of the underground obstacles P in this way, the nozzle device T is rotated by driving the motor 25 so that the other (lower) side of the underground obstacle P is jetted. Disconnect with

Thereafter, while holding the cut underground obstacle P with the gripping member 20, the slide frame 8 is rotated around the shaft 28 with the jack 29 to rotate the gripping member 20 toward the chamber C. The ground object P is removed from the front part of the cutter disk D by moving the gripping material 22 in a state where it is rotated to a predetermined position, and separating the ground object P cut and separated in the chamber C. I can do it.
In the case of cutting in this manner, if the underground obstacle P is cut from below and removed, the upper underground obstacle P after cutting is easily supported and workability is good.

FIG. 9 is a drawing showing another embodiment of the gripping member shown in FIGS. 3 to 5, wherein (a) is a side view, (b) is a plan view, and (c) is another plan view. . The description of the same configuration and operation as in the above-described embodiment will be omitted.

This embodiment cuts and removes an H-shaped underground obstacle (pile).
A gripping member 32 having a gripping member 31 large enough to grip an H-shaped underground obstacle is provided in place of 0. The gripping member 32 includes a positioning rod 33 for the underground obstacle P.
Is provided. The positioning rod 33
Is to make a hole in the underground obstacle P in advance with a water jet and insert the hole into the hole.

In this embodiment, when the cutting device E is slid toward the underground obstacle P, the position of the underground obstacle P is determined by the positioning rod 33 and the underground obstacle P is grasped by the gripping material 31. After that, the underground obstacle P is cut by the water jet by the nozzle device T as described above.
Then, the cut underground obstacle P is taken into the chamber C by rotating the cutting device E to the chamber side and then spreading the gripping material 31, and is removed.

FIG. 10 is a schematic view showing an example of cutting an underground obstacle. According to an underground obstacle cutting and removing apparatus M for cutting and removing an underground obstacle P as described above, as shown in FIG. Then, at various positions on the front surface of the cutter disk D,
The underground obstacle P appearing at the front of the cutter disk D can be cut and removed.

In the above-described embodiment, the underground obstacle cutting and removing apparatus M having a preferable configuration is described. However, in the invention according to this application, the underground obstacle P is cut while being gripped and cut. The configuration is not limited to the above embodiment as long as the configuration is such that the underground obstacle P can be removed.

[0047]

The invention according to this application is implemented in the form described above, and has the following effects.

Since the underground obstacle in front of the cutter disk is cut by the nozzle device while being held by the gripping member, the cutting and removing operation can be performed without dropping the cut underground obstacle. In this operation, after cutting the first one place of the underground obstacle, it can be cut into a predetermined size while grasping the underground obstacle, and then carried into the cutter chamber with the gripping member and removed. There is no time required for the setup change from the cutting of the object to the removal operation, and the operation of cutting and removing the underground obstacle can be performed efficiently.

Furthermore, since the cutting device is provided with turning means for turning the nozzle device about an axis perpendicular to the sliding direction of the cutting device , the cutting device is turned after turning to rotate the nozzle device. medium obstacle Ki de be incorporated into the chamber, it is possible to perform the work to remove from cut and efficiently continuously.

If the nozzle device is provided with a moving means for moving the nozzle in the direction of jetting the water jet, the gap between the underground obstacle and the nozzle can be adjusted more easily, and the adjustment operation can be performed efficiently. It becomes possible.

Further, if a rotating means for rotating the nozzle member about an axis parallel to the direction of jetting the water jet is provided, only the nozzle member is rotated while the underground obstacle is grasped by the grasping member. Since the underground obstacle can be cut within a predetermined range, it is possible to efficiently perform the cutting operation on both sides of the underground obstacle.

At this time, if a gripping member is provided substantially at the center of rotation of the nozzle member, the underground obstacle can be cut while holding the center of the underground obstacle to be cut, and the work is performed in a well-balanced manner. It becomes possible.

Furthermore, if a tilting means for tilting the nozzle member and the gripping member from the direction perpendicular to the cutter disk surface is provided, even a tilted underground obstacle can be cut while being gripped. Underground obstacles can be cut and removed.

Further, according to such an apparatus, the underground obstacle can be cut while being gripped, and the cut underground obstacle in the gripped state can be continuously removed into the chamber. The underground obstacle can be cut and removed efficiently, and the work efficiency can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a drawing showing a cutter disk provided with an underground obstacle cutting and removing device showing one embodiment of the invention according to this application, (a) is a front view, and (b) is a side sectional view.

FIG. 2 is a view showing a relationship between an underground obstacle cutting and removing device shown in FIG. 1 and a cutter disk, (a) is a front view,
(b) is a side view, and (c) is a plan view.

FIG. 3 is a front view showing a cutting device of the underground obstacle cutting and removing device shown in FIG. 1;

FIG. 4 is a side view showing a cutting device of the underground obstacle cutting and removing device shown in FIG. 1;

FIG. 5 is a plan view showing a cutting device of the underground obstacle cutting and removing device shown in FIG. 1;

FIG. 6 is a front view showing a nozzle device provided in the cutting device of the underground obstacle cutting and removing device shown in FIG. 1;

FIG. 7 is a side view showing a nozzle device provided in the cutting device of the underground obstacle cutting and removing device shown in FIG.

8 is a plan view showing a nozzle member provided in the cutting device of the underground obstacle cutting and removing device shown in FIG.

9A and 9B are diagrams showing another embodiment of the gripping member shown in FIGS. 3 to 5, wherein FIG. 9A is a side view, FIG. 9B is a plan view, and FIG. 9C is another plan view.

10 is a schematic view showing an example of cutting an underground obstacle by the underground obstacle cutting and removing device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Opening part 2 ... Support member 3 ... Guide rod 4 ... Slide member 5 ... Cylinder 6 ... Nozzle 7 ... Slide material 8 ... Slide frame 9 ... Slide rod 10 ... Cylinder 11 ... Groove part 12 ... Front and rear slider 13 ... Left and right slider 14 ... Nozzle frame 15 ... traversing slide rod 16 ... pushing cylinder 17 ... feed motor 18 ... feed chain 19 ... sprocket 20 ... gripping member 21 ... support frame 22 ... gripping material 23 ... support shaft 24 ... jack 25 ... motor 26 ... support member 27 ... tilting motor 28 ... shaft 29 ... jack 30 ... link material 31 ... gripping material 32 ... gripping member 33 ... positioning rod D ... cutter disk C ... chamber S ... sliding device T ... nozzle device E ... cutting device P ... ground obstruction Object M: Underground obstacle cutting and removing device

Continuation of the front page (72) Inventor Koji Tsujida 3-1-1, Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo Kawasaki Heavy Industries, Ltd. Kobe Plant (72) Inventor Mutsuhiro Nakazawa 3 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo 1-1 Kobe Plant, Kawasaki Heavy Industries, Ltd. (56) References JP-A-10-299389 (JP, A) Patent 2624463 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) E21D 9/08 E21D 9/06 301

Claims (5)

(57) [Claims] A nozzle device having a nozzle for injecting a water jet toward an underground obstacle in front of a cutter disc and moving in a direction perpendicular to the direction of jetting the water jet to cut the underground obstacle; A cutting device is provided by providing a slide device that supports the nozzle device and moves in the radial direction of the cutter disk, and a slide unit that slides the slide device in the cutter disk radial direction.
To the cutting device, provided with a sliding means for moving the nozzle device in the cutter disk surface and perpendicular Rutotomoni, the
The radial direction of the cutter disk on which the cutting device slides
The nozzle device is moved to the face side or chamber around the axis at right angles.
An underground obstacle, wherein a gripping member for gripping and holding the underground obstacle when the nozzle device cuts the underground obstacle is provided in the nozzle device. Cutting and removal equipment. Wherein the nozzle apparatus, underground obstacle cutting removal apparatus according to claim 1 Symbol mounting, characterized in that a moving means for moving the nozzle to the water jet direction. To 3. A nozzle apparatus according to claim 1 or claim 2 Symbol underground obstacle mounting, characterized in that a rotating means for rotating the nozzle around the water jet direction parallel to the axis Cutting and removal equipment. 4. The underground obstacle cutting and removing device according to claim 3 , wherein a gripping member is provided substantially at the center of rotation of the nozzle. 5. The underground obstacle cutting removal device according to nozzle device to any one of claims 1 to 4, characterized in that a tilting means to a predetermined angle inclined from the perpendicular direction of the cutter disk surface.