JPH10306684A - Obstacle removing device for shield machine and obstacle removing method using the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety and the efficiency of a work regarding removing of an obstacle to shield excavation. SOLUTION: A face plate 12 of a shield machine 11 is supported by a conical drum 22. When an underground H-steel pile 26 is removed, an obstacle cutting recovery device 27 is arranged on a base 28 disposed on one side of the conical drum 22. Further, a relay manipulator 51 and a conveyor 52 are arranged in a cylinder drum 23 in the rear of the conical drum 22. A telescopic arm 54 of the relay manipulator 51 effects not only expansion and contraction operation but also rise and fall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield machine, and more particularly to a device and a method for removing an obstacle.

[0002]

2. Description of the Related Art Underground H
In the case where an obstacle such as a steel pile appears on the face, conventionally, an obstacle cutting and collecting means is attached to the back of the face plate of the shield machine, and one side of the face plate facing the obstacle cutting and collecting is opened, The obstacle obstructing object cutting and collecting means is inserted forward of the shield, and the obstructing obstructing object is cut and collected. Since the rear side of the face plate is a chamber, it is usually necessary to mount a scaffold in this chamber and then attach the obstruction object cutting and collecting means. Therefore, the work to be performed in the chamber is a significant part of the total work, and not only is the danger high, but the scaffolding must be installed and removed,
The amount of work increased and efficiency was poor.

[0003] Therefore, there arises a technical problem to be solved in order to improve the safety of work related to the removal of the obstacle and to improve the efficiency, and the present invention solves the problem. With the goal.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems, and has a conical drum which expands rearward at the center of the back surface of a face plate, and a rear end opening of the conical drum. Splice the front end opening of the cylindrical drum to the part,
The conical drum and the face plate are configured to rotate by a face plate driving device disposed on the outer surface of the cylindrical drum, and an obstruction object collecting hole that can be opened and closed is provided on one side of the conical drum. An obstructing object cutting and collecting means is provided on an outer surface of the conical drum through an object collecting hole, and further, an openable / closable opening through which the obstructing object cutting and retrieving means can protrude and retract on one side of the face plate. It is an object of the present invention to provide an apparatus for removing a hindrance object of a shield machine having a section.

Further, when removing an obstacle that blocks the front of the shield, a telescopic manipulator that can be extended and retracted and raised is installed in the cylindrical drum, so that a cut piece of the obstacle can be removed from the obstacle cutting and collecting means. Delivered to the relay manipulator via the obstruction object recovery hole,
By transferring the cut piece to a conveyor introduced into the cylindrical drum, a method of removing an obstacle that conveys the cut piece to the rear of the shield by the conveyor is provided.

[0006]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described in detail with reference to FIG. FIG. 1 shows a shield machine 11 having a circular face plate (cutter head) 1 on its front face in a front view.
2 and the spokes 13 of the face plate 12
Are arranged at small intervals at a longitudinal edge of the spoke portion 13, and a slit 15 is formed along the longitudinal edge of the spoke portion 13. Thereby, face plate 1
2 is rotated, the cutting face is excavated by the bits 14, 14,..., And the excavated earth and sand is taken into the face plate 12 through the slit 15 into the chamber 16 on the back surface (back side of the drawing).

An opening 17 having a constant width is provided in one radial direction of the face plate 12 from the vicinity of the center to the outer periphery. Usually, the opening 17 is a long plate-like iron plate 18 from the inside.
... is spread and closed. Further, a plurality of ridge face plates 19 are arranged on the face plate 12 in a substantially rotationally symmetrical manner. .. Are pushed forward from the main body of the face plate 12 at the time of removing an obstacle, which will be described later, to hold the face in place of the muddy water pressure of the chamber 16. Also, the milling cutters 20, 20,... And the roller cutters 21, 21,... Provided near the outer peripheral edge of the face plate 12 are used for cutting and crushing the uncut portions of the obstructing objects by the obstructing object cutting and collecting device 27 described later. Things.

As shown in FIG. 2, a center cone system is employed as a support system for the face plate 12 of the shield machine 11. That is, a conical drum 22 that expands rearward is provided at the center of the back surface of the face plate 12, and the front end opening of the cylindrical drum 23 is joined to the rear end opening of the conical drum 22. Further, a partition wall 24 is provided on the outer periphery of the cylindrical drum 23 along the front end opening. Further, on the outer surface of the cylindrical drum 23, face plate driving devices 25 are arranged. When the face plate driving devices 25 are operated, the conical drum 22 rotates, and the face plate 12 integrated with the conical drum 22 rotates.

[0009] When an obstacle (in this case, an underground H steel pile 26) is blocking the front of the shield, its surroundings are improved in advance and the position is determined by electromagnetic wave survey or boring survey. While confirming the above, excavation is performed until the underground H steel pile 26 is approached, and the vehicle is stopped. The mechanical equipment (not shown) for ground improvement, exploration, and the like includes the conical drum 2
It is good to equip the inner cavity of 2 and cylindrical drum 23 beforehand.

Then, the ridge face plates 19 are pushed forward to ridge the face. Further, the slit 15 is closed, and the muddy water in the chamber 16 is drained. .. Are removed from the opening 17 and
An obstructing object cutting and collecting device 27 is installed in the chamber 16 behind the opening 17. The conical drum 22 is provided with a base 28 for installing the obstruction object cutting and collecting device 27.

The base 28 is formed by cutting one side of the conical drum 22 by a plane parallel to the central axis of the conical drum 22.
It is arranged on that plane. A collecting hole 29 is provided at the center of the base 28. Although not shown, a cover is attached to the collection hole 29 so as to be openable and closable, and is normally closed during excavation. It is opened when the obstruction object cutting and collecting device 27 is installed, and an operator enters the chamber 16 from inside the conical drum 22 through the collecting hole 29. Further, the components of the obstruction object cutting and collecting device 27 are carried into the base 28 through the collecting hole 29, and the installation operation is performed. Therefore, it is not necessary to form a scaffold as in the related art, and the installation work can be performed on the base 28 or the outer peripheral surface of the conical drum 22, so that the work efficiency and safety can be improved.

FIGS. 3 and 4 are enlarged views of the obstacle object cutting and collecting device 27. FIG. The rear edge of the base 28 (FIG. 3)
Near the right edge), two columns 30 and 3 on the left and right
0 is erected. A top beam 31 is bridged between the top ends of the columns 30, 30, and a cross beam 32 is slidably bridged in the middle along the longitudinal direction of the columns 30, 30. In addition, these columns 3
A feed screw 33 is disposed at the center of the left and right sides of 0 and 30 in parallel with the columns 30 and 30. The feed screw 33 penetrates vertically through the left and right centers of the cross beam 32 and meshes with a female screw engraved on the inner periphery of the through hole 34. Bearings 35, 35 are mounted on both ends of the feed screw 33, and the base bearing 35 is disposed on the base 28, and the top bearing 35 is disposed on the lower left and right center of the top beam 31. I do.

Further, a geared motor 36 is disposed above the left and right center of the rear end of the base 28, and its output is connected to the feed screw 33. Thus, when the geared motor 36 is driven, the feed screw 33 is rotated, and the cross beam 32 meshing with the feed screw 33 is moved to the column 3.
It slides along the longitudinal direction of 0,30 (that is, the radial direction of the shield machine 11).

The cross beam 32 includes two right and left arms 3.
7, 37 project forward (to the left in FIG. 3). A head 38 is hung over the ends of the arms 37, 37 so as to be able to move up and down. That is, shafts 39, 39 are provided on the left and right sides of the central portion 38c of the head 38, and the shafts 39, 39 are pivotally supported by the tips of the arms 37, 37. The insides of the arms 37, 37 at the distal end pivotal portions are cavities that open downward, and through these cavities, crank levers 40, 4 laterally provided on the shafts 39, 39.
0 projects below the arms 37, 37.

Further, cylinders 41, 41 are arranged along the lower edges of the arms 37, 37,
The base ends of the pistons 41 are pivotally connected to the cross beam 32, while the distal ends of the piston rods of the cylinders 41 are pivotally connected to the distal ends of the crank levers 40. As a result, if the cylinders 41 are expanded and contracted, the head 38 is lowered with the shafts 39 and 39 as pivot points.

Although not shown in detail, the head 38
A central portion 38c of the head 38 has a bearing through which the output shaft of a linear motion motor 42 installed at the rear of the head 38 is inserted.
8f. Therefore, when the linear motor 42 is driven, the front portion 38f rotates around its central axis.

On the left and right sides of the front end of the front portion 38f, hands 43, 43 each having a half-shaped drum are provided with heads 38.
Are pivotally attached to the left and right directions. Further, jacks 44, 44 are disposed on both left and right sides of the front portion 38f in the front-rear direction of the head 38, and the tips of the jacks 44, 44 are pivotally attached to the back surfaces of the hands 43, 43. Thus, if the jacks 44, 44 are extended, the hand 4
When the jacks 44, 44 contract, the hands 43, 43 open right and left outward as shown in the figure.

A total of four saddles 45, 45, 45, 45 are provided on the upper surface (front side in FIG. 4) and the lower surface (back side in FIG. 4) of the front portion 38f, respectively, to the left and right.
Are provided on the saddles 45, 45, 45, 45, and jacks 46, 46, 46, 46 which expand and contract in the left-right direction.
Are arranged. The jacks 46, 46, 46, 46
The outer cylinder tips of the telescopic arms 47, 47, 47, 47 disposed in the front-rear direction of the head 38 are fixed to the tip movable portions (the left and right outer portions in the figure). Therefore, when the jacks 46, 46, 46, 46 are expanded and contracted, the telescopic arms 47, 47, 47, 47 move in parallel in the left-right direction.

Then, the telescopic arms 47, 4
Cylinders 47a, 47a, 47a, 47a for expansion and contraction are disposed on the left and right inner side surfaces of 7, 47, 47, and water jet nozzles 48, 47 are provided at the tips of the inner cylinders of the telescopic arms 47, 47, 47, 47. 48, 48,
48 are attached. The water jet nozzles 48, 48, 48, 48 face left and right inner sides, respectively, and ground protection plates 49, 49, 49, 49 facing left and right inner sides are provided at the bases of the injection ports. The injection port protrudes from the center of the inner side surface of the ground protection plate 49.

After the installation of the obstruction object cutting and collecting device 27, the face plate driving devices 25 are moved so that the position of the obstruction object cutting and collecting device 27 comes to the underground H steel pile 26. Note that, here, for simplicity of explanation, it is assumed that the underground H steel pile 26 is located just forward of the vertical center line of the shield machine 11, but in practice, it is usually shifted left and right. In this case, the obstruction object cutting and collecting device 27 is also inclined right and left from immediately above (or directly below) the center of the front surface of the shield machine 11. In such a case, the linear motion motor 42 is moved in the reverse direction by the amount of the inclination. Thereby, the front portion 38f of the head 38 can be kept horizontal regardless of the position of the underground H steel pile 26.

Prior to cutting the underground H steel pile 26, grooves 50, 50 are formed along the left and right sides of the underground H steel pile 26, as shown in FIG.
50 are provided. The grooves 50, 50 are provided with low-pressure water jet nozzles (not shown) in place of the water jet nozzles 48, 48, 48, 48 on the telescopic arms 47, 47, 47, 47, and the low pressure water jets are forwardly provided. It is formed by spraying toward. Then, the nozzle is replaced with the water jet nozzle 48, 48, 48, 48, and the underground H steel pile 26 is cut.

The cutting is performed from below the underground H steel pile 26 sequentially upward. The vertical position of the head 38 is adjusted by moving the cross beam 32 in the shield radial direction or rotating the face plate 12 in accordance with the cutting position. In addition, the cylinders 41 are extended so that the head 38 is directed toward the ground in front through the opening 17 of the face plate 12. Further, after the jacks 46, 46, 46, 46 are expanded and contracted to position the telescopic arms 47, 47, 47, 47 in the left-right direction, the telescopic arms 4
7, 47, 47, 47 are extended to project from the opening 17, and the water jet nozzles 48, 48, 48,
48 is inserted into the groove 50, 50.

Then, while injecting the water jet,
The left and right telescopic arms 47, 47 are gradually contracted while synchronizing, so that the left and right water jet nozzles 4
Pull 8, 48 at the same time. By this, underground H steel pile 2
6 is cut from the back of the ground to the front. Also,
When the water jet injected from one of the water jet nozzles 48 penetrates the underground H steel pile 26 and the surrounding soil and reaches the other groove 50, the ground protection provided on the other water jet nozzle 48 is protected. It collides with the plate 49 and is blocked. Therefore, the water jet is connected to the other groove 5
There is no possibility that the excess pressure will reach the left and right outer surfaces and disturb the ground.

Further, the cutting piece 2 is cut from the body of the underground H steel pile 26.
Before the 6a is separated, the hands 43 are closed and the cut pieces 26a are gripped from the left and right. After separation, cut piece 2
6a is the cylinder 4 held by the hands 43, 43.
1, 41, the linear motor 42 and the geared motor 36 are operated to be taken into the shield machine 11 from the opening 17.

On the other hand, as shown in FIG.
A relay manipulator 51 and a conveyer 52 are installed in 3. (If the cylindrical drum 23 is equipped with the above-described mechanical equipment for ground improvement, exploration, etc.,
These are temporarily retracted outside the cylindrical drum 23, and then the relay manipulator 51 and the conveyor 52 are carried in. 6) As shown in FIGS. 6 and 7, the relay manipulator 5
Top frames 53, 53 are disposed on the upper left and right portions of 1, and the top frames 53, 53 are suspended from the ceiling of the cylindrical drum 23. The telescopic arm 5 is provided on the front side surface (left side in FIG. 6) of the top frames 53, 53.
4,54 outer cylinder base ends are pivotally mounted. In addition, longitudinally intermediate portions of trunnion cylinders 55, 55 are pivotally attached to lower ends of the top frames 53, 53, respectively.
The distal ends of the piston rods of the trunnion cylinders 55 are pivotally mounted on one side of the telescopic arms 54. As a result, when the trunnion cylinders 55 are expanded and contracted, the telescopic arms 54 are lowered.

The telescopic arms 54, 54
Cylinders 54a, 54a for expansion and contraction
Are provided, and the left and right telescopic arms 5 are provided.
An arbor 56 is bridged between the tips of the inner cylinders 4 and 54. An arm 57 is provided in the middle of the arbor 56 in the longitudinal direction, and the arm 57 is formed so as to be rotatable around the axis of the arbor 56 by motors 58, 58 provided at both ends of the arbor 56. ing. Further, a head 59 is extended from the tip of the arm 57 and
Is formed so as to be vertically rotatable by a motor 60 provided at one end of the arm 57.

The head 59 is formed in a substantially C-shape in plan view, and two upper and lower jacks 61, 61 are respectively disposed on the left and right ends toward the left and right inner sides. Confronted. And these jacks 61,
Hands 62, 62 each having a half-shaped drum are provided at the ends of the hands 61, 61, 61 so as to face each other one by one on the left and right.
Therefore, the hands 62, 62 can be opened and closed in parallel by the expansion and contraction operation of the jacks 61, 61, 61, 61.

Thus, the telescopic arms 54, 5
4, elongation and contraction, rotation of arm 57, and head 5
9, the hands 62, 62 can be moved not only in the cylindrical drum 23 but also in the conical drum 2.
2 can be moved to an arbitrary position on the vertical plane at the center in the left and right direction, and the elevation angle can be freely adjusted. And
The hands 62, 62 can also be made to protrude outside the collection hole 29 located above and in front of the relay manipulator 51. Thus, the cut pieces 26a gripped by the hands 43 of the obstruction object cutting and collecting apparatus 27 and taken into the chamber 16 are transferred to the hands 62 of the relay manipulator 51 through the collecting holes 29. Then, the relay manipulator 51 receives the cut piece 2
6a is transferred to the lower conveyor 52. Thus, the cut piece 26a is carried out to the rear of the shield machine 11.

By the way, in such a shield machine other than the center cone type, a relay manipulator is provided behind the partition wall, and the relay manipulator is extended into the chamber through a recovery hole formed in the partition wall.
A cut piece was received from the obstruction object cutting and collecting device. Accordingly, the relay manipulator needs a certain length in the front-rear direction, and as a result, the length of the shield machine is also long.

On the other hand, the relay manipulator 51
Can take out the cutting piece 26a by combining not only the expansion / contraction operation but also the elevating (rotating) operation, so that the installation space in the front-rear direction can be short. Therefore, the shield length can be shortened.

The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

[0032]

As described above, according to the present invention, since the installation work of the obstruction object cutting and collecting apparatus can be performed by using the conical drum as a scaffold, it is not necessary to form a special scaffold. Therefore, the ratio of work performed in the chamber is reduced, and safety can be improved. In addition, by introducing a relay manipulator or a conveyor into the cylindrical drum as in the second aspect of the invention, obstacles can be removed very efficiently. And this relay manipulator can be configured not only to extend and retract, but also to go up and down in order to get the cut pieces, so it is possible to shorten the installation space in the front and rear direction and shorten the shield length accordingly. it can. Further, mechanical equipment for an auxiliary construction method (ground improvement, exploration, etc.) for removing obstacles may be provided in the cylindrical drum in advance.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a front view of a shield machine.

FIG. 2 is a longitudinal sectional view of the shield machine in a state where an obstruction object cutting and collecting device, a relay manipulator, and a conveyor are installed.

FIG. 3 is a side view of the obstruction object cutting and collecting device.

FIG. 4 is a front view of the obstruction object cutting and collecting device.

FIG. 5 is a plan cross-sectional view of an obstacle obstruction object cutting and collecting apparatus and a ground pile showing a state of cutting an underground H steel pile.

FIG. 6 is a side view of a relay manipulator and a conveyor.

FIG. 7 is a plan view of the relay manipulator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Shield machine 12 Face plate 17 Opening 22 Conical drum 23 Cylindrical drum 26 Underground H steel pile 26a Cut piece 27 Obstacle object cutting and collecting device 28 Base 29 Collection hole 51 Relay manipulator 52 Conveyor

Continued on the front page (72) Inventor Hisao Ogawa 1-8 Tsukudocho, Shinjuku-ku, Tokyo Inside the Kumagaya Gumi Tokyo Branch (72) Inventor Yoshikazu Kido 2-1 Tsukudocho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo Co., Ltd. Headquarters (72) Inventor Yoshiyuki Kawamura 2-1 Tsukudocho, Shinjuku-ku, Tokyo Tokyo Main Office (72) Inventor Shigeru Muramatsu 1-8 Tsukudocho, Shinjuku-ku, Tokyo Inside Kumagaya Gumi Tokyo Branch (72) Inventor Satoshi Ogawa 2-1, Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo head office

Claims (2)

[Claims] 1. A conical drum that expands rearward at the center of the back surface of a face plate, and a front end opening of a cylindrical drum is joined to a rear end opening of the conical drum to be disposed on an outer surface of the cylindrical drum. A shield machine configured such that the conical drum and the face plate are rotated by a provided face plate driving device, wherein an obstruction object collection hole that can be opened and closed is provided on one side of the conical drum, and the obstruction object collection hole is provided. The obstruction object cutting and collecting means is arranged on the outer surface of the conical drum through the intermediary of the conical drum, and further provided on one side of the face plate an openable and closable opening through which the obstructing object cutting and collecting means can protrude and disappear. An obstacle removing device for a shield machine. 2. When removing an obstacle obstructing the front of the shield, a telescopic manipulator is installed in the cylindrical drum so as to be able to extend and retract, so that a piece of the obstacle can be removed from the obstacle cutting and collecting means. The transfer of the cut piece to the relay manipulator through the obstruction object recovery hole, and further, the cut piece is transferred to a conveyor introduced into the cylindrical drum, whereby the cut piece is conveyed to the rear of the shield by the conveyor. A method for removing obstacles using the apparatus for removing obstacles according to claim 1.