JP2852630B2 - Tunnel floor excavator and tunnel floor forming method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel floor excavating apparatus for forming a tunnel floor and a method for forming a tunnel floor.

[0002]

2. Description of the Related Art A tunnel floor is formed to have a shape in which a central portion is slightly curved downward due to a problem of strength.

Therefore, it is not preferable to excavate a downwardly curved shape using a hydraulic shovel (bucket), a hydraulic breaker (chisel), or the like. That is, in order to excavate and form a floor having a downwardly curved shape with these hydraulic shovels or the like, an operator must visually confirm the excavation state and perform the excavation work. The disadvantage is that it is difficult to achieve.

An object of the present invention is to provide a tunnel floor excavating apparatus and a method of forming a tunnel floor, which can easily and accurately form a tunnel floor having a shape that is curved downward at a desired center.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

[0006] A tunnel floor drilling apparatus the tunnel floor 1 which is curved downward to excavate formation, the tunnel floor 1
And a track 4 extending in the width direction of the tunnel is provided.
A moving body 3 equipped with a rotary excavating body 2 running on the upper surface 4 is provided, and the moving body 3 is reciprocated and lowered in the width direction of the tunnel so as to form a tunnel floor 1 having a downwardly curved shape. The present invention relates to a tunnel floor excavator, wherein the movable body 3 is configured to be movable in a tunnel length direction.

[0007] A tunnel floor drilling apparatus the tunnel floor 1 which is curved downward to excavate formation, the tunnel floor 1
A track 4 extending in the width direction of the tunnel is provided, and a moving body 3 equipped with a rotary excavating body 2 running on the track 4 is provided. The moving body 3 is configured to gradually move downward from the right side to the center in the width direction of the tunnel so as to gradually move upward from the center to the left side, and to move the moving body 3 in the tunnel length direction. The present invention relates to a tunnel floor excavation device characterized by having the above configuration.

[0008] configured in a shape that matches the downwardly curved shape of the tunnel floor 1 Oite, attempts drilling forms a track 4 to the tunnel floor drilling apparatus according to any one of claims 1, 2
The present invention relates to a tunnel floor excavation device characterized by the following.

In the tunnel floor excavating apparatus according to any one of claims 1, 2, and 3, a transport unit 5 for transporting excavated earth and sand excavated by the excavated body 2 is provided near the rotary excavated body 2. The present invention relates to a tunnel floor excavator characterized by being provided.

A track 4 of a predetermined length formed in a shape conforming to a desired downward curved shape of the tunnel floor 1 is provided in the tunnel width direction in a ground contact state, and the moving body 3 traveling on the track 4 is provided.
And a rotatable excavating body 2 is provided on the moving body 3, and a transport unit 5 for transporting excavated earth and sand excavated by the excavating body 2 is provided near the excavating body 2. 3,
The excavation body 2 and the transfer unit 5 are provided in front of the self-propelled vehicle 6 so that the track 4, the moving body 3, the excavated body 2 and the conveyance unit 5 can be moved together with the self-propelled vehicle 6 in the tunnel length direction. The present invention relates to a characteristic feature of a tunnel floor excavator.

In the tunnel floor excavator according to the fifth aspect, the moving body 2 is provided with a sliding body 7, the sliding body 7 is provided with a rotating shaft 8, and the rotating shaft 8 is provided with the rotating excavating body 2. The present invention relates to a tunnel floor excavator characterized by being provided.

A tunnel floor excavator according to claim 5, wherein a driving shaft (9) is provided on the moving body (2), and the rotary excavating body (2) is provided on the driving shaft (9). It is related.

Excavation of tunnel floor 1 curved downward
A method for forming a tunnel floor, comprising:
And the rotary excavator 2 running in the width direction of the tunnel
The provided moving body 3 and Bei, excavating a tunnel floor 1 reciprocated and lowering movement of the movable body 3 in the tunnel width direction, and, by gradually advancing the tunnel longitudinal direction of the movable body 3 Drilling The present invention relates to a method for forming a tunnel floor, wherein the tunnel floor is curved downward.

Excavation of tunnel floor 1 curved downward
A method for forming a tunnel floor, comprising:
And the rotary excavator 2 running in the width direction of the tunnel
The moving body 3 is provided, and the moving body 3 is gradually moved downward from the right side to the center in the width direction of the tunnel, and gradually moved upward from the center to the left side.
Drilled floor 1, and the tunnel floor 1 which is curved downward by advancing the movable body 3 to gradually tunnel longitudinal direction
And a method of forming a tunnel floor portion.

[0015]

The moving body is reciprocated and lowered in the width direction of the tunnel, the tunnel floor is excavated downward by a rotary excavating body provided on the moving body, and the moving body is tunneled. Move it in the length direction and repeat this,
A tunnel floor portion having a predetermined length and a central portion in the tunnel width direction curved downward is formed.

Since the present invention is constructed as described above, it is possible to easily and accurately excavate and form a downwardly curved tunnel floor portion.

[0017]

1 and 2 show a first embodiment of the present invention, and FIGS. 3 and 4 show a second embodiment of the present invention, which will be described below.

A first embodiment will be described.

At the front side of the vehicle 6, there is provided a swing arm 13 which swings around a base. A mounting frame 10 extending in the width direction of the tunnel is pivotally attached to the swing arm 13.

The mounting frame 10 is provided with a downwardly curved track 4 on which the moving body 3 moves, and a cutting section 11 for introducing excavated earth and sand into the transport section 5 is provided in front of the track 4. I have.

A chain conveyor 5a (reference numeral 5b is a sediment receiving plate) is provided on the front upper portion of the mounting frame 10 as a transport section 5, and a belt conveyor 5c is disposed below the end position of the chain conveyor 5a. Have been.

The moving body 3 traveling on the track 4 by an appropriate means is provided with a driving source 12 on a moving table 17, and a sliding body 7 is loosely fitted on a driving shaft 9 of the driving source 12. A rotating shaft 8 is rotatably supported by a bearing 14 at an end of the sliding body 7, and the excavating body 2 having a rotating drum structure is provided on the rotating shaft 8.

Reference numeral 15 denotes a transmission mechanism for transmitting the drive of the drive shaft 9 of the drive source 12 to the rotation shaft 8.

Note that the sliding body 7 is configured to be able to slide by a suitable sliding means.

Since the present embodiment is constructed as described above, first, the floor of the opening of the opening is excavated and formed by a suitable means into a desired downwardly curved shape, and the self-propelled arm 13 is moved up and down. The track 6 provided on the mounting frame 10 by moving the car 6 forward and the sliding arm 13 descending and sliding down (in this case, the track 4 is formed into a downwardly curved shape that matches the downwardly curved shape of the floor of the tunnel. ) Is placed on the floor excavated above.

In this state, the excavating body 2 is rotated while moving the moving body 3 in the tunnel width direction to excavate the floor.

Since the moving body 3 travels according to the curved shape of the track 4, the floor is also excavated in a downwardly curved shape.

When the moving body 3 travels, the sliding body 7
The excavation body 2 may be forcibly moved by the appropriate fluttering means, or may be fluttered by its own weight without operating the fluttering means.

The movable body 3 is reciprocated on the track 4 to excavate and form a floor having a desired downwardly curved shape.

The moving body 3 is stopped when the excavating body 2 completes excavation at the end in the width direction of the tunnel, and the moving body 7 is controlled so that the fluttering means 7 glides in the opposite direction.

After the floor is excavated and formed into a desired downwardly curved shape by the reciprocating motion of the moving body 3 several times in this manner, the self-propelled vehicle 6 is advanced to the face side, and the excavated earth and sand on the blade 11 is removed by the earth and sand It is introduced on the receiving plate 5b. The excavated earth and sand on the earth and sand receiving plate 5b is conveyed by the chain conveyor 5a, and subsequently introduced into the belt conveyor 5c from the end of the earth and sand receiving plate 5b.
It is carried out by the belt conveyor 5c.

Subsequently, the sliding body 7 is moved upward by the above-mentioned sliding means, the self-propelled vehicle 6 is advanced, and the above is repeated, and the excavation of the floor having a desired downward curved shape is sequentially advanced to the face side.

Next, a second embodiment will be described.

In the second embodiment, the driving source 12
And the excavation body 2 is directly connected to the drive shaft 9 of FIG.

The excavated body 2 in this case is configured to be able to move down. For example, a hydraulic cylinder or the like is provided on the support 16 of the drive source 12, and the position of the drive source 12 can be raised and lowered by appropriately controlling the hydraulic cylinder. The rest is the same as in the first embodiment.

Therefore, this embodiment has the following features.

In this embodiment, instead of excavating in the length direction of the tunnel with a hydraulic shovel or the like to form a floor portion having a downward curved shape, the floor portion is first formed into a desired downward curved shape in the tunnel width direction. Subsequently, since this excavation is sequentially advanced to the face side, a floor portion having a desired downward curved shape can be formed with a desired accuracy.

In the present embodiment, since the excavated body 2 having the rotating drum structure is employed as the excavated body 2, the excavated earth and sand becomes fine excavated earth and sand, so that the post-processing is simplified accordingly.

In this embodiment, since the moving body 3 is moved in the tunnel width direction on the track 4 and the track 4 is sequentially moved to the face side by the self-propelled vehicle 6, the moving body 3 is moved on the track 4. If the movement to the face side is controlled by a computer or the like, automation of excavation of the tunnel floor can be easily realized.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment.

FIG. 2 is a cross-sectional view in which some of the above components (the transport unit 5, the mounting frame 10, etc.) are omitted.

FIG. 3 is a side view of the second embodiment.

FIG. 4 is a cross-sectional view in which a part of the above (the transport unit 5, the mounting frame 10, etc.) is omitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel floor part 2 Excavated body 3 Moving body 4 Orbit 5 Transport part 6 Self-propelled vehicle 7 Sliding body 8 Rotation axis

Claims (9)

(57) [Claims] 1. A tunnel floor drilling apparatus the tunnel floor 1 which is curved downward excavating formed, tunnel floor 1
And a track 4 extending in the width direction of the tunnel is provided.
Moving body 3 equipped with rotary excavating body 2 running on road 4
The moving body 3 is configured to reciprocate and descend in the tunnel width direction so as to form the tunnel floor 1 having a downwardly curved shape, and the moving body 3 is moved in the tunnel length direction. A tunnel floor digging device characterized by being movable. 2. A tunnel floor drilling apparatus the tunnel floor 1 which is curved downward excavating formed, tunnel floor 1
A moving body 3 equipped with a rotary excavating body 2 running on the track 4
The moving body 3 is configured to gradually move downward from the right side to the center in the width direction of the tunnel and gradually move upward from the center to the left side so as to form the tunnel floor portion 1 having a downward curved shape. A tunnel floor excavator, wherein the movable body 3 is configured to be movable in a tunnel length direction. 3. A process according to claim 1 configured in a shape that matches the downwardly curved shape of the tunnel floor 1 Oite the tunnel floor rigs, attempts drilling forms a track 4 according to any one
A tunnel floor excavation device characterized by the fact that it is formed . 4. A tunnel floor excavating apparatus according to claim 1, wherein said excavating body is transported by said excavating body 2 to a position near said rotary excavating body 2. 5. A tunnel floor excavator, comprising: 5. A track 4 having a predetermined length formed in a shape corresponding to a desired downward curved shape of the tunnel floor 1 is provided in the tunnel width direction in a ground contact state, and a moving body 3 traveling on the track 4 is provided. A rotary excavating body 2 is provided on the moving body 3, and a transporting unit 5 for transporting excavated earth and sand excavated by the excavating body 2 is provided near the excavating body 2. The excavation body 2 and the transfer unit 5 are provided in front of the self-propelled vehicle 6 so that the track 4, the moving body 3, the excavated body 2 and the conveyance unit 5 can be moved together with the self-propelled vehicle 6 in the tunnel length direction. Tunnel floor excavator. 6. The tunnel floor excavating apparatus according to claim 5, wherein a moving body 2 is provided with a sliding body 7, a rotating shaft 8 is provided on the sliding body 7, and a rotary excavating body is provided on the rotating shaft 8. 2. A tunnel floor excavator, comprising: 7. The tunnel floor excavating apparatus according to claim 5, wherein a driving shaft is provided on the moving body, and the rotary excavating body is provided on the driving shaft. apparatus. 8. A tunnel floor 1 curved downward is formed in an excavated form.
A method for forming a tunnel floor to be formed, comprising:
1 and the rotary excavation body 2 running in the width direction of the tunnel
A moving body 3 equipped with the vehicle is provided, and the moving body 3 is reciprocated and lowered in the width direction of the tunnel to excavate the tunnel floor 1 ,
And, the method of forming the tunnel floor, characterized in that a tunnel floor 1 which is curved downward by advancing the movable body 3 drilling to gradually tunnel length. 9. The tunnel floor 1 curved downward is formed in an excavated form.
A method for forming a tunnel floor to be formed, comprising:
1 and the rotary excavation body 2 running in the width direction of the tunnel
The moving body 3 equipped with is provided, tunnel the movable body 3 gradually raised moves from the center to gradually drop moves from right to center to the left side in the tunnel width direction
It drilled Le floor 1, and method for forming the tunnel floor, characterized in that a tunnel floor 1 which is curved downward by advancing the movable body 3 to gradually tunnel length.