JP3606730B2 - Shield machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shield machine that is configured to be able to replace a soil discharge device for discharging sediment according to the soil quality of a drilled ground.
[0002]
[Prior art]
Usually, in the shield machine, a cutter head is rotatably provided at the front part of the shield body, and a sand and sand intake chamber is formed between the cutter head and the partition body provided on the shield body side, Further, the shield body is provided with a soil removal device for discharging the excavated earth and sand taken into the earth and sand intake chamber to the outside of the shield body.
[0003]
And when excavating the tunnel with a shield machine, if the soil quality of the excavated ground changes, for example, if it changes from soft ground that naturally collapses to rock that does not naturally collapse, The earth removing device is changed to one suitable for each soil type, for example, from a screw type to a belt type.
[0004]
Conventionally, when excavating the earth removal device, that is, when replacing the screw type with the belt type, the tip of the belt conveyor is inserted into the earth and sand intake chamber, and the excavated earth and sand is inserted into the earth and sand intake chamber. It is necessary to provide a hopper for guiding the belt to the belt conveyor, and this hopper mounting operation has been performed manually by an operator entering the earth and sand intake chamber.
[0005]
[Problems to be solved by the invention]
As described above, there is a problem that the operation of attaching the hopper by the worker in the earth and sand taking-in chamber is dangerous.
[0006]
Then, an object of this invention is to provide the shield machine which can perform the replacement | exchange operation | work of a soil removal apparatus safely.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the shield machine according to the present invention has a soil taking-in chamber formed between a cutter head rotatably provided at a front portion of a shield body and a partition body provided in the shield body. A shield tunneling machine, in which an insertion hole is formed in the partition wall body, a movable partition body movable in the front-rear direction is disposed in the insertion hole, and a sediment-derived hopper is provided above the movable partition body. The first lid for opening and closing the first earth and sand taking-in opening of the hopper is provided, and the second earth and sand taking-in opening is provided at the front part of the moving partition body and the second earth and sand taking-in opening is provided. A second lid that can be freely opened and closed is provided.
[0008]
In order to solve the above-mentioned problem, another shield machine according to the present invention captures earth and sand between a cutter head rotatably provided at the front of the shield body and a partition body provided in the shield body. A shield machine in which a chamber is formed, wherein an insertion hole is formed in the partition wall body, and a movable partition body movable in the front-rear direction is disposed in the insertion hole, and an upper portion of the movable partition body is used for soil and sand derivation. A hopper is provided, a first lid body that can freely open and close the first earth and sand taking-in opening of the hopper is provided, and a second earth and sand taking-in opening is provided at the front of the moving partition wall and the second earth and sand A screw-type soil removal device in which a screw lid is provided in a cylindrical casing when a second lid that can open and close the intake opening is provided and the soil quality of the excavated ground is collapsible. Second earth and sand connected to the moving partition When excavated soil is discharged through the opening for insertion, and the soil of the excavated ground is non-disintegrating, the belt type soil removal device in which a belt conveyor is disposed in a cylindrical casing is moved as described above. It connects with a partition body, and it is comprised so that excavation earth and sand may be discharged | emitted via a hopper part.
[0009]
According to each of the above-described configurations, the movable partition body is provided in the sediment intake chamber of the shield body so as to be freely retractable, and the movable partition body is provided with a sediment-derived hopper and a screw-type soil discharge device corresponding to the belt-type soil discharge device. Since an opening for earth and sand intake corresponding to the above is provided, it is not necessary to install a hopper in the earth and sand intake chamber.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a shield machine according to an embodiment of the present invention will be described with reference to FIGS.
[0011]
In FIG. 1, reference numeral 1 denotes, for example, a refraction type shield body in a shield machine, which includes a front body portion 2 and a rear body portion 3.
A cutter head 11 is supported on a front portion of the shield body (front body portion) 1 via a slewing bearing 12 so as to be rotatable around the axis of the shield body, and is rotationally driven in the shield body 1. A device (for example, a hydraulic motor, an electric motor, etc.) 13 is configured to be rotationally driven in a predetermined direction via a drive gear 14 and a ring gear 15.
[0012]
And between this cutter head 11 and the partition body 16 provided in the front position of the shield main body 1, the earth and sand taking-in chamber 17 for taking in excavated earth and sand is formed, and in this shield machine, It is considered that the earth removal device (described later) for discharging the excavated earth and sand in the earth and sand intake chamber 17 can be replaced according to the soil quality of the excavated ground.
[0013]
That is, as shown in FIGS. 2 to 4, a cylindrical guide body 18 having a predetermined length in which a predetermined shape, for example, a circular insertion hole 18 a is formed, is provided at the center of the partition wall body 16. In the insertion hole 18 a of the cylindrical guide body 18, the moving partition body 19 is connected to a moving device, for example, a moving cylinder device 20, and arranged so as to move (slide) in the front-rear direction.
[0014]
The movable partition wall 19 is provided at a cylindrical sliding frame 21 that can slide on the inner surface of the insertion hole 18a of the cylindrical guide body 18, and at an inner rear position of the sliding frame 21, and at the lower part is earthed. A partition plate 22 in which an insertion hole 22a for inserting a casing portion of the apparatus is formed, and a second earth and sand taking-in opening 23a is formed in the lower portion of the partition plate 22 and also provided at an inner front position of the sliding frame 21. The front wall plate 23 is provided between the front wall plate 23 and the partition wall plate 22 and is used to guide the earth and sand from the earth and sand outlet passage 24 provided above the front wall plate 23 to the soil discharger side. The first lid 27 that is connected to the first and second sedimentation hopper 25 and the first cylinder device 26 and that is formed in the hopper 25 and that can freely open and close the first sediment and the second cylinder device 28. Connected to the above-mentioned second earth and sand uptake And is configured mouth portion 23a from the second lid 29. a freely pair off. Further, the upper part of the earth and sand derivation passage 24 is opened to smoothly guide the excavated earth and sand in the earth and sand taking-in chamber 17 into the earth and sand derivation hopper 25. 3 and 4 show a state in which the second earth and sand intake opening 23a is closed by the second lid 29. FIG.
[0015]
Therefore, by operating the moving cylinder device 20, the movable partition wall 19 protrudes into the retreat position (position shown in FIG. 2) that does not protrude into the earth and sand intake chamber 17 and into the earth and sand intake chamber 17. It can be moved to either the protruding position (position shown in FIG. 5). The moving partition wall 19 is formed with the sediment discharge passage 24 as described above. The worker is placed in the partition plate 22 corresponding to the sediment discharge passage 24 by the worker. The manhole 31 for entering and exiting is connected. A liquid injection shaft 32 is inserted through the movable partition wall 19 at the center of the cutter head 11.
[0016]
Then, the shield excavator discharges the excavated earth and sand taken from the screw-type earth removing device 33 and the earth and sand derivation hopper 25 for discharging the excavated earth and sand taken in from the second earth and sand taking-in opening 23a. Belt type earth removing device 34 (see FIG. 5) is provided, and when the soil quality of the excavated ground is collapsible, the screw type earth removing device 33 is connected to the moving partition wall 19 side. When the soil quality of the excavated ground is non-disintegrating, the belt type earth removing device 34 is connected to the moving partition wall 19 side.
[0017]
The screw-type earth removing device 33 is provided at a cylindrical casing 41 having a circular cross section, a screw blade 42 rotatably disposed in the cylindrical casing 41, and a rear end portion of the cylindrical casing 41. A rotating device 43 (for example, a hydraulic motor, an electric motor or the like is used) for rotating the blades 42, and a retracting device for moving the rotating device 43 and the screw blades 42 in the axial direction thereof, such as a retracting device. And a cylinder device 44 for use. As shown in FIG. 1, the leading and trailing end portions of the screw blades 42 are retracted / retracted by a predetermined stroke S with respect to the cylindrical casing 41 by the cylinder device 44 for withdrawal. In FIG. 1, the earth removal device 33 at the virtual line position for indicating the stroke S shows a state before being attached to the moving partition wall 19, and the state attached to the moving partition body 19 is indicated by a solid line. Has been.
[0018]
Further, as shown in FIG. 5, the belt-type earth removing device 34 is composed of a cylindrical casing 51 having a rectangular cross section, and a belt conveyor 52 disposed in the cylindrical casing 51. At the front end portion of the cylindrical casing 51, a charging port (not shown) facing the first earth and sand intake opening 25a in the earth and sand derivation hopper 25 is formed.
[0019]
Next, excavation work by the shield machine will be described.
When the soil of the excavated ground is destructive, for example, when it is soft ground, as shown in FIG. 2, a screw-type soil removal device 33 is used.
[0020]
That is, in the state where the movable partition wall 19 is positioned rearward, the front end portion of the cylindrical casing 41 is connected to the second earth and sand taking-in opening 23 a of the front wall plate 23, and the exit / retreat cylinder device 44 The tip of the screw blade 42 is projected so as to be located in the earth and sand taking-in chamber 17.
[0021]
Therefore, the excavated earth and sand taken into the earth and sand taking-in chamber 17 by the rotation of the cutter head 11 is taken into the cylindrical casing 41 by the rotation of the screw blades 42 and discharged to the outside from the outlet at the rear end.
[0022]
On the other hand, when the soil quality of the excavated ground is non-disintegrating (self-supporting), for example, when it is a bedrock, as shown in FIG. The moving partition wall 19 is pushed forward by the moving cylinder device 20. Next, the tip end portion of the cylindrical casing 51 of the belt-type earth removing device 34 is inserted through the insertion hole 22a of the partition wall plate 22, and the inlet is inserted into the second earth and sand intake opening 25a of the earth and sand outlet hopper 25. After the cylindrical casing 51 is connected to the movable partition wall 19 side so as to match, the first lid 27 is opened by the first cylinder device 26.
[0023]
In this state, the excavated earth and sand taken into the earth and sand taking-in chamber 17 by the rotation of the cutter head 11 is lifted upward by the lifting plate 11a provided on the cutter head 11 side, and then the earth and sand taking-in room 17 The first earth and sand taking-in opening 25a of the earth and sand derivation hopper 25 that protrudes into the cylindrical casing 51 is introduced.
[0024]
Then, the inserted excavated earth and sand is conveyed to the rear part of the shield body 1 by the belt conveyor 52 and discharged to the outside from the discharge port.
As described above, the moving partition body is provided in the sediment taking-in chamber of the shield body so as to be retractable and retractable, and the moving partition body corresponds to a sediment-derived hopper and a screw-type soil discharging apparatus corresponding to the belt-type soil discharging apparatus. Since the earth and sand intake opening is provided, it is not necessary for the operator to install a hopper in the earth and sand intake chamber when replacing the earth removal device according to the soil quality of the excavated ground. Therefore, the excavator replacement work can be performed safely.
[0025]
【The invention's effect】
As described above, according to the configuration of the present invention, the movable partition body is provided in the sediment take-in chamber of the shield body so as to be freely retractable, and the movable partition body is provided with a sediment discharge hopper and screw corresponding to the belt-type soil discharge device. Since an opening for earth and sand intake corresponding to the type of earth removal device is provided, when replacing the earth removal device according to the soil quality of the excavated mountain, Since it is not necessary to perform attachment, the excavation device can be replaced safely.
[Brief description of the drawings]
FIG. 1 is an overall cross-sectional view including a screw type earth removing device in a shield machine according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part of the shield machine.
3 is a cross-sectional view taken along the line AA in FIG.
FIG. 4 is a perspective view of a moving partition body.
FIG. 5 is a cross-sectional view of a main part equipped with a belt-type earth removing device in the shield machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shield body 11 Cutter head 16 Bulkhead body 17 Sediment taking-in chamber 18 Cylindrical guide body 18a Insertion hole 19 Moving partition body 20 Moving cylinder device 21 Sliding frame 22 Bulkhead plate 23 Front wall plate 23a Second earth and sand taking-in opening 25 Sediment Deriving Hopper 25a First Sediment Intake Opening 27 First Lid 29 Second Lid 33 Screw Type Soil Removal Device 34 Belt Type Soil Removal Device 41 Cylindrical Casing 42 Screw Blade 51 Cylindrical Casing 52 Belt Conveyor

Claims (2)

A shield machine in which an earth and sand taking-in chamber is formed between a cutter head provided rotatably at a front portion of a shield body and a partition body provided in the shield body, wherein an insertion hole is formed in the partition body. In this insertion hole, a movable partition body that is movable in the front-rear direction is disposed, and a sediment derivation hopper is provided above the movable partition body, and the first sediment intake opening of the hopper can be opened and closed freely. A first lid is provided, and a second lid for opening and closing the second earth and sand taking-in opening is provided at a front portion of the moving partition wall and the second earth and sand taking-in opening is provided. And a shield machine. A shield machine in which an earth and sand taking-in chamber is formed between a cutter head provided rotatably at a front portion of a shield body and a partition body provided in the shield body, wherein an insertion hole is formed in the partition body. In this insertion hole, a movable partition body that is movable in the front-rear direction is disposed, and a sediment derivation hopper is provided above the movable partition body, and the first sediment intake opening of the hopper can be opened and closed freely. A first lid is provided, a second earth and sand intake opening is provided at the front of the movable partition wall, and a second lid that is openable and closable is provided. When the soil quality of the mountain is collapsible, a screw-type earth removing device in which screw blades are arranged in a cylindrical casing is connected to the moving partition body, and the second earth and sand taking-in opening is provided. As well as discharging excavated soil, When the quality is non-disintegrating, a belt-type earth removing device in which a belt conveyor is arranged in a cylindrical casing is connected to the moving partition wall so as to discharge excavated earth and sand through the hopper. A shield machine that is constructed.

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