JP2002129887A - Device for mounting drill to tunnel boring machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for mounting a drill to a tunnel boring machine facilitating boring operation by allowing even a tunnel boring machine with a relatively small bore to be always equipped with a boring unit through the rational use of small space. SOLUTION: A girder 4 connecting the body of the tunnel boring machine to a following truck is disposed so that at least a partial section thereof is located at approximately the center of a tunnel cross section. A guide ring 11 in the form of a partially cut circle describing an arc approximately concentric with the tunnel cross section is provided on the outside of the girder 4 located at approximately the center of the tunnel cross section. The boring unit 20 is height- and angle-adjustably supported by a head portion 15 which is movable over the guide ring 11. The boring unit 20 can move about the axis of the tunnel cross section and bore a hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching a drilling machine to a tunnel machine, which is mainly mounted on a tunnel machine having a small excavation diameter and can effectively drill holes in the ground together with excavation. Things.

[0002]

2. Description of the Related Art Recently, a boring machine has been widely used for a tunnel machine for the following reasons. Perform advanced drilling to understand the geology ahead. Drainage boring is performed when there is a large aquifer in front of the aquifer. Chemical injection when the ground is very soft and difficult to excavate.

[0003] Of the above, particularly, and, the cutter head covers the entire face, which is very effective in a TBM in which it is difficult to suddenly deal with the ground. And
The boring machine for the above-mentioned correspondence is usually used by being transported from the outside of the mine to the rear position of the TBM body by a flat bogie whenever necessary.

[0004]

As described above, when the boring machine is carried in from the outside of the mine every time it is necessary, it takes a lot of time to carry in and install the boring machine, which affects the work efficiency. Some are provided in the TBM main body. One example is shown in FIGS. 7A and 7B. The TBM equipped with a boring machine as described above is limited to a large-diameter TBM having a sufficient installation space in an excavator main body or an open-type TBM having a medium-diameter or more having a sufficient space in an upper half portion. Here, as an image, a large diameter is a diameter of about Φ7m or more, and a medium diameter is a diameter of Φ7 ~
The thing of about 3 m and a small diameter means a thing with a diameter of less than about Φ3 m.

[0005] In a large-diameter shield type TBM, FIG.
As shown in (b), a semicircular turning guide 101 is provided in an upper half portion of the excavator body 100, and a boring machine 102 is mounted on a head portion 102 which can move on the turning guide 101. Along with 103, a position / direction adjusting device 104 for the boring machine 103 is provided. In the figure, reference numeral 105 denotes a cutter head, and 106 denotes a cutter head drive motor. The boring machine 103 arranged as described above can operate the position / direction adjusting device 104 to quickly perform positioning and drilling according to the work situation. However, in such a boring machine installation method, the medium-diameter shield type TBM and the small-diameter TB
The M cannot be equipped due to space issues in the cabin.

In an open type TBM having no shield shell, a main beam is disposed below the upper half to secure a work space in order to secure a work space not only for a large-diameter TBM but also for a medium-diameter TBM. Have been to be. Such an open TBM1
In FIG. 10, for example, as shown in FIG.
On a main beam 112 connected to a carriage (not shown) that follows from 11, supported by a support 114 having a position / direction adjusting device that can be tilted in the circumferential direction within a required angle above the gripper device 113 on the main beam 112. Being a boring machine 1
15 is installed. Japanese Patent Application Laid-Open No. H11-210380 discloses a medium-diameter open-type TBM in which a boring machine having such a configuration is installed. TB equipped with these boring machines
In the case of M, the same effect as that of the above-described large-diameter shield type TBM can be obtained.

However, in such a boring machine installation system in which a boring machine is installed on a main beam by a support, a TB having an open diameter of up to a medium diameter is used.
In M, it can be installed by lowering the main beam downward to widen the space in the upper half.
In the case of M, of course, there is a problem that it is not possible to equip the inside of a medium-diameter shield type TBM having a shield shell and a small-diameter TBM because it is difficult to secure a space.

The present invention has been made in view of the above-mentioned problems, and even if a tunnel excavator having a relatively small diameter is used, a boring machine is always installed by rationally utilizing a narrow space. It is an object of the present invention to provide a device for attaching a drilling machine to a tunnel machine which facilitates boring work.

[0009]

In order to achieve the above-mentioned object, a device for attaching a drilling machine to a tunnel machine according to the present invention is provided between a body of the tunnel machine and a subsequent bogie. Are arranged so that at least a part of the section is located substantially at the center of the tunnel section, and an arc that is substantially concentric with the tunnel section is formed outside the girder located at the center of the tunnel section. A configuration in which a partially ring-shaped guide ring member is provided, a boring machine is supported by supporting means movable on the guide ring member, and the boring machine can move around the center axis of the tunnel cross section and drill holes. It is characterized by being.

According to the present invention, a guide ring member is mounted around the girder connecting the TBM main body and the succeeding bogie, and the boring machine is movable so as to be able to run on the guide ring member. In this configuration, the boring machine can be equipped with effective use of the narrow space, and the boring machine can be moved along the guide ring member. This has the effect. And since it becomes possible to equip a boring machine compactly in a tunnel excavator with a small diameter section,
There is an effect that the trouble caused by carrying in and installing the mine from the outside of the mine every time it is needed is eliminated, and the working efficiency can be improved. Further, since the guide ring member is supported by the girder arranged at the center position of the tunnel, it can be installed without any trouble even if there is a belt conveyor supported by the girder and connected to the following bogie side. There is an advantage that the boring machine can be used at a wide angle in the direction.

[0011] The boring machine is provided with a movable support having a plurality of guide rollers guided by guide grooves formed in the guide ring member, and an arc on one side of the guide ring member. A gear member attached to the traveling platform and a drive motor attached to the traveling platform; a boring machine mounted on the traveling platform; and a driving gear rotated by the driving motor and a gear member provided with the guide ring member. It is preferable that the traveling platform is moved in such a manner that the traveling platform is moved. With this configuration, the boring machine can be moved to a desired position along the guide ring member to perform a drilling operation.

The guide ring member is preferably attached to the girder such that the height position and the pitching angle with respect to the girder are variable. In this case, as compared with the case where a mechanism for finely adjusting the boring machine is provided as in the conventional type, the size of the apparatus can be greatly reduced, and the effect that the present invention can be applied to a tunnel excavator having a smaller section can be obtained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a specific embodiment of a device for attaching a drilling machine to a tunnel machine according to the present invention will be described with reference to the drawings.

FIG. 1 is a view showing an embodiment of a tunnel excavator provided with a drilling machine mounting apparatus for a tunnel boring machine according to the present invention, and FIG. 2 is a side view showing the drilling machine mounting apparatus of the present embodiment. 3 is an AA view in FIG. 2, FIG. 4 is an enlarged view of a main part of the drilling machine mounting device in (a) side view, and (b) a BB view. ing.

A tunnel excavator (TBM) shown in FIG.
Is a medium-diameter semi-shield type TBM equipped with the drilling machine mounting device 1 of the present embodiment. The drilling machine mounting device 1 is provided with a girder 4 for connecting the excavator body 2 and the following bogie 3.
Tunnel (substantially TB)
M) so as to be located substantially on the center line C,
A guide ring 11 (corresponding to a guide ring member of the present invention) of a required size provided concentrically around the girder 4 at a position behind the segment elector device 5 (gripper device in the case of an open type) and this guide Ring 11
Head 15 supported by the shaft and movable in the circumferential direction
(Corresponding to the traveling platform of the support means of the present invention), and a boring machine 20 mounted on the head section 15 and provided so as to be adjustable by the position / direction adjusting device 17.

The girder 4 has substantially the same configuration as that of the conventional girder except for the location of the girder 4. A pair of girder members 4a, 4a are arranged at required intervals from the center line C to the left and right. A belt conveyor 6 for carrying out the excavated soil backward is passed between 4a. A guide rail 8 of a segment transport hoist 7 is attached downward at an intermediate position between members 4b connecting the lower surfaces of the girder members 4a, 4a.

The guide ring 11 has a partially circular shape with a required radius with respect to the tunnel center line C as a reference, and a roller guide groove 12 is formed near the outer periphery of both side surfaces thereof. ing. Further, a gear 13 (corresponding to a gear member in the present invention) for moving the boring machine 20 is provided on substantially one entire length of one side surface. As the gear 13, an internal gear or a roller chain with an attachment is attached along the inner peripheral portion. The guide ring 11 is provided at the inner peripheral portion thereof with brackets 14 having a required leg length.
It is supported by the upper and lower surfaces of 4a and is attached so as to be concentric with the tunnel.

The head 15 which is a support member of the boring machine 20 is attached to the guide ring 11 thus configured so as to be movable in the circumferential direction. The head portion 15 is provided with a guide roller 16 that rolls while fitting into the guide grooves 12 of the guide ring 11.
(In the embodiment, the front-back direction is the cutter head 2a
It is described that the side is the front and the subsequent bogie 3 is the rear. )
And two hydraulic cylinders 1 provided before and after the head 15a.
The position / direction adjusting device 17 includes 7a, 17b and a link 17c extending in the front-rear direction.

The hydraulic cylinders 17a, 1 in the position / direction adjusting device 17
A boring machine main body 22 is supported with its axis in the front-rear direction via a boring machine base frame 21 which is pin-connected to one end (rod end in the embodiment) of 7b and is supported at four points. The link 17c has one end at the upper end on the front side of the head section 15 and the other end at the rear side of the support frame 15b of the base frame 21.
The pin 7b is connected diagonally at the same axial position as the rod tip connecting pin and is disposed obliquely. Such a hydraulic cylinder 1
As shown in FIG. 4B, a pair of left and right 7a, 17b and link 17c is provided.

The head unit 15 has a drive motor 1 with a speed reduction mechanism on one of its front and rear sides (the front side in this embodiment).
8, a drive gear 19 is attached to an output shaft of the drive motor 18, and the drive gear 19 is meshed with the gear 13 attached to the guide link 11 so that the head 15 is driven by the drive motor 18. The vehicle can travel along the guide link 11.

In the drilling machine mounting apparatus 1 of this embodiment configured as described above, during the normal operation of the tunnel excavator, the excavation work is performed while the boring machine 20 is not operated in a stationary state. When a drilling operation is required, a drilling rod is connected to the end of the boring machine main body 22 with a required length, and a drill is attached to perform the drilling operation.

In this drilling operation, in order to determine the drilling position, when drilling the drill toward the upper position of the face,
The hydraulic cylinders 17a and 17b provided before and after the position / direction adjusting device 17 attached to the bed portion 15 are operated to move the rod forward and backward, and the rod is connected by changing the rod protrusion amount of one of the hydraulic cylinders. The support angle of the base frame 21 is adjusted via the support frame 15b, and the boring machine 2 on the base frame 21 is adjusted.
The axis center of 0 can be set to a desired angle. In adjusting the drilling axis, when adjusting the undulation angle of the support frame 15b by moving the rods of the hydraulic cylinders 17a and 17b disposed in front and rear, the upper end of the front portion of the head portion and the rear portion of the support frame 15b are adjusted. Since the support frame 15b is connected by the link 17c, the support posture can be adjusted without the support frame 15b largely moving in the front-rear direction.

Since the drilling direction of the boring machine 20 can be set in this manner, for example, in order to perform advanced boring for grasping the geology ahead of the face of the tunnel excavator, the cutter head 2a (see FIG. 1) must be penetrated. What is necessary is just to set the direction so that. In such a case, the angle is set by, for example, projecting the rod of the rear hydraulic cylinder 17b and contracting the rod of the front hydraulic cylinder 17a. Drilling is performed in a similar manner when draining boring is performed in the case where a stagnant layer is present in front of the face and a large amount of spring water is expected. When drilling a position outside the tunnel excavation area, such as above a face, as shown by a two-dot chain line a in FIG. Is projected, and the rod of the rear hydraulic cylinder 17b is contracted. The operation of these hydraulic cylinders is controlled by an operation panel provided at an appropriate position behind the excavator.

In order to change the drilling position by the boring machine 20, the drive gear 18 attached to the head unit 15 is activated, so that the drive gear 19
1 meshes with a gear 13 attached to the
Can be moved in the circumferential direction along, so that it moves to the required position and stops, and then sets the drilling axis as described above and operates the boring machine 20 to move it to the required position on the ground. Can be drilled. Since the guide ring 11 is provided so as to surround the girder 4 around the girder 4 as described above, by moving the head portion 15 within the range guided by the guide ring 11, the guide ring 11 is referenced to the center of the tunnel. This makes it possible to drill the ground in front of the machine over a wide angle range in the circumferential direction. After the head portion 15 is moved, the engagement is maintained at the position by braking by the function of the brake mechanism incorporated in the drive motor 18, so that the positioning does not shift. Therefore, it is possible to confirm the formation, drain the spring water, or improve the ground by injecting a chemical solution, depending on the purpose of the work.

When such drilling work is not performed,
As described above, if the boring machine 20 is positioned above the girder 4 and the stopped state is maintained, the excavated soil is carried backward by the belt conveyor 6 disposed inside the girder 4 and handles the lining segment. In this case, since the hoist 7 can move along the lower side of the girder 4, there is no problem in any case, and the excavation work can be performed normally.

FIG. 5 shows another embodiment of a small-diameter TB.
FIG. 6 shows a mode of attaching a drilling machine to M. FIG.
The side view (a) showing the drilling machine installation part applied to M, the BB view (b) in Drawing (a), and the principal part detailed drawing (c) are shown, respectively.

A drilling machine mounting apparatus 1A according to the present invention applied to a small-diameter TBM is provided with a girder 4A (main beam) that connects an excavator main body 2A and a succeeding bogie 3 in a shield type TBM, as in the above embodiment. ) To the tunnel center line C
And at the mounting point of the drilling machine mounting device 1A, a boring machine is mounted on the upper half of the tunnel such that the center of the supporting structure of the boring machine described later is substantially close to the tunnel center line C. 20 is located.

The supporting structure of the boring machine 20 includes a guide ring 31 whose semicircular portion is guided so that the boring machine 20 can move in the circumferential direction inside the tunnel, in substantially the same manner as in the above-described embodiment. It comprises a position / direction adjusting device for supporting the device 31 with a function of tilting and ascending and descending, and a head portion for supporting a boring machine capable of moving in the circumferential direction within a predetermined angle range along the guide ring 31.

The guide ring 31 has guide grooves 32 on the front and rear side surfaces of the semicircular portion, similarly to the above-described embodiment.
32, and a gear 33 is attached to the front side surface along an arc.
The height adjusting means 35 of the direction adjusting device 34 is connected to a pin 35d, and a bracket 31a is protruded from the rear side of the arc to be connected to a hydraulic cylinder 36 for tilting and a pin 36a. Is supported on the girder 4A via a hydraulic cylinder 36 for use. Girder 4
A is a pair of girder members 4 at required intervals as in the above embodiment.
a, 4a are arranged, during which the belt conveyor 6 for carrying out the excavated soil can pass through.

On such a guide ring 31, a head portion 40 similar to the above-described embodiment engages the guide rollers 41 in the guide grooves 32, 32, respectively, so as to freely roll, and a deceleration provided on the side surface. A drive gear 42a mounted on the output shaft of the drive motor 42 with a mechanism is meshed with the gear 33 on the guide ring 31 side so that the drive motor 42 can be moved in the circumferential direction within a required angle range (120 ° in this specific example) by the operation of the drive motor 42. It is supported by. The base frame 21 of the boring machine 20 is attached to the upper surface of the head portion 40 with the guide ring 31 standing upright and the front facing obliquely upward.

The height adjusting means 35 of the position / direction adjusting device 34 is provided with a hydraulic cylinder 35a whose base end is pivotally supported on the side of the girder member 4a, and the hydraulic cylinder 35a converts the direction in the vertical direction to generate power. It comprises a toggle link 35b having a configuration capable of transmitting and a slide portion 35c which is connected to one link end of the toggle link 35b and moves vertically. The slide portion 35c has a structure in which a member connected to one end of the toggle link 35b is guided vertically along a rail provided with a girder member (not shown). Further, the other link tip of the toggle link 35b is connected by a connection pin fixed to the girder side, moves the slide portion 35c up and down by the operation of the hydraulic cylinder 35a, and moves the guide ring 31 located on the upper side. The height of the head unit 40, in other words, the height position of the boring machine 20 can be adjusted via the head unit 40.

In response to such height adjustment, the hydraulic cylinder 36 for tilting moves the guide ring 31 connected to the pin 36a via the bracket 31a by the expansion and contraction of the rod as shown by the chain line b in the figure. Can be tilted forward.

In the drilling machine mounting apparatus 1A constructed as described above, since the space in the rear inside of the tunnel excavator main body 2A is small, it moves along the guide ring 31 as in the above-described embodiment. There is no room to install a device for moving the head unit 40, which is a mounting unit for a boring machine to be moved, up and down, and tilting back and forth. Therefore, in the drilling machine mounting apparatus 1A, as the height adjusting means 35, the hydraulic cylinder 35a operates the toggle link 35b to move the slide portion 35c up and down, thereby directly moving the guide ring 31 up and down to adjust the height. Let it do. Also, by operating the tilting hydraulic cylinder 36 to tilt the guide ring 31 forward with reference to the connecting pin 35d at the base end thereof, the boring rod is moved in advance with the guide ring 31 standing upright. A drilling machine using a narrow space so that it can be adjusted from the inclination at the time of drilling upward as shown in the figure to the attitude of the forward drilling so as not to cause trouble during normal work It became possible.

In the above embodiment, the case where the drilling machine is permanently installed in the shield type TBM has been described.
M can be installed in the same manner.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a tunnel machine equipped with a drilling machine mounting device according to the present invention.

FIG. 2 is a side view showing the drilling machine mounting device of the present embodiment.

FIG. 3 is a view along AA in FIG. 2;

FIGS. 4A and 4B are enlarged views of a main part of the drilling machine mounting device, wherein FIG. 4A is a side view, and FIG.
FIG.

FIG. 5 is a diagram illustrating a mode of attaching a drilling machine to a small-diameter TBM.

FIGS. 6A and 6B are a side view showing a drilling machine installation portion applied to the small-diameter TBM, a BB view in FIG. It is.

FIGS. 7A and 7B are views showing a drilling machine mounting portion installed on a conventional large-diameter TBM, in which FIG. 7A is a longitudinal sectional view and FIG. 7B is a transverse sectional view.

FIG. 8 is a diagram showing a drilling machine mounting portion installed on a conventional medium-diameter TBM.

[Explanation of symbols]

 1, 1A drilling machine mounting device 2, 2A excavator body 3 bogie 4, 4A girder 6 belt conveyor 11, 31 guide ring 12, 32 guide groove 13, 33 gear 14 bracket 15, 40 head part 15b support frame 17, 34 Position / direction adjusting device 17a, 17b, 35a, 36 Hydraulic cylinder 18, 42 Drive motor 19, 42a Drive gear 20 Boring machine 21 Base frame 35 Height adjusting means

Claims (3)

[Claims] 1. A girder connecting a main body of a tunnel excavator and a subsequent bogie is disposed so that at least a part of the girder is located substantially at the center of the tunnel section, and substantially at the center of the tunnel section. A partly-circular guide ring member that forms an arc substantially concentric with the tunnel cross-section is provided outside the girder located at a position where the boring machine is supported by supporting means movable on the guide ring member. A boring machine mounting device for a tunnel excavator, wherein a boring machine is configured to be able to move around a central axis of a tunnel cross section to bore a hole. 2. A traveling platform having a plurality of guide rollers guided by guide grooves formed in the guide ring member, the movable support means of the boring machine, and one side surface of the guide ring member. A gear member attached along the arc and a drive motor attached to the traveling platform, a boring machine is mounted on the traveling platform, and a driving gear rotated by the driving motor is provided with the guide ring member. The drilling machine mounting device for a tunnel machine according to claim 1, wherein the traveling platform is moved by meshing with the gear member. 3. The guide ring member is arranged such that a height position and a pitching angle with respect to the girder are variable.
The device for attaching a drilling machine to a tunnel machine according to claim 1, which is attached to the girder.