JP2003106097A - Curved shield machine having hydraulic motor and rotational angle detector incorporated therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shield machine which has an erector rotation driving motor and an erector rotational angle detector incorporated therein, has no projection on the side of an opening within an erector ring, enlarges the opening to a possible largest extent for transportation of building materials to a cutting face and coming and going of workers, and ensures a space for an additional jack in order to increase the propelling force of the jack. SOLUTION: According to the outer gear type curved shield machine having a rotation driving pinion formed outside the erector ring, the erector rotation driving motor and the erector rotational angle detector are vertically combined with each other to be installed in a gap between a shield plate and the erector ring, and a gear of the erector rotation driving motor is in mesh with the pinion to drive the erector ring for rotation. Further, the erector rotation driving motor is engaged with the erector rotational angle detector and combined with the same in one body, and therefore the additional jack can be provided in a vacant space between the shield plate and the erector ring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erector device for a shield excavator in which a hydraulic motor for rotationally driving an erector device for a bending shield excavator and a rotation angle detector for the erector device are integrated.

[0002]

2. Description of the Related Art In recent years, it has already reached its limit to expand roads on the ground in order to cope with the increasing traffic volume in urban areas. I am dealing with it. To construct a tunnel with a shield excavator, push the end of the shield propulsion jack against the already constructed segment on the inner wall surface of the tunnel excavated by the rotary cutter head in front of the shield excavator, and extend this shield propulsion jack. By taking a propulsion reaction force, the shield excavator is moved forward and the rotary cutter head provided on the front surface of the front shield frame is pressed against the face of the face, and the face of the face is excavated by rotationally driving the rotary type cutter head, The excavated earth and sand is taken into the face chamber, and the earth and sand taken into the face chamber is sent to the ground via an excavated earth and sand discharging device.

Thereafter, the tunnel is excavated by using an erector device in a space surrounded by a rear shield frame of the tunnel space formed by reducing the shield propulsion jack and a tail plate connected to the rear portion of the rear shield frame. The segment is arranged on the inner wall surface of the, and the gap between the ground and the segment is filled with the backing material.
In this way, the tunnel is constructed by repeating the above steps.

However, in order to newly construct an underground tunnel, there are existing underground structures such as foundations of aboveground structures and existing tunnels in the underground of the urban area, and therefore these existing structures are avoided. However, in order to perform tunnel excavation work, it is necessary to excavate the shield excavator while bending it vertically and horizontally.

Explaining the tunnel excavation by the shield excavator with reference to FIGS. 5 to 11, FIG. 5 is a longitudinal sectional view of the shield excavator, FIG. 6 is a general view of a conventional external tooth type erector ring, and FIG. 6 is a partially enlarged view of the erector rotation drive motor mounting portion of FIG. 6, FIG. 8 is a partially enlarged view of the erector rotation angle detector mounting portion of FIG. 6, and FIG. 9 is a schematic view of a conventional internal tooth type erector ring. FIG. 11 is a partially enlarged view of the erector rotation drive motor mounting portion of FIG. 9, and FIG. 11 is a partially enlarged view of the erector rotation angle detector mounting portion of FIG. 9.

The shield excavator main body is divided into two parts, a shield front body 3 and a shield rear body 4 having a rotary cutter head 1 on the front surface, and the respective body parts 3 and 4 are connected so as to be bendable. A plurality of shield propulsion jacks 14 and a center folding jack 15 are provided between both body parts 3 and 4, and a front cutter head 1 having a cutter for excavating a face of a tunnel is provided on the front body part 3 of the shield. Front shield 3
Inside, a face chamber, a partition wall, a drive device for rotating the front cutter head 1 and the like (all not shown) are provided.

Further, on the shield rear body portion 4, an erector 9 mounted on an erector ring 91 rotatably supported by a ring garter 7, a segment assembly scaffolding device,
A shield propulsion jack 14, a center folding jack 15, an excavated earth and sand unloading device 12, an unloading gate opening / closing device, an unloading drive device, a device for controlling the drive of each device, etc. (none of which are shown) are provided. Has been. Furthermore, the entire circumference of the inner circumference of the shield plate 2 of the shield rear body part 4 is prevented from intruding groundwater or mud mixed with groundwater through the gap between the outer circumference of the segment 16 which is the lining material of the tunnel and the shield plate 2. A tail seal member is provided for this purpose.

In the excavation of the straight portion, the shield excavator presses the shield propulsion jack 14 against the already constructed segment 16 of the inner wall surface of the tunnel to evenly extend the shield propulsion jack 14 provided on the peripheral wall of the shield excavator. Then, the propulsion reaction force is applied to move the shield excavator forward, and at the same time, the front cutter head 1 provided on the front surface of the shield front body portion 3 is pressed against the face of the face, and the front cutter is rotated by a rotation drive device (not shown). The head 1 is rotated to excavate the face face, and the excavated earth and sand is taken into the face chamber. The earth and sand taken into the face chamber is taken into an excavated earth and sand excavator 12 having a conveying means such as an earth excavation screw conveyor, and then the excavated earth and sand excavator 12
Is discharged from the rear soil discharge port and is transported to the ground by being loaded on a conveyor device (not shown) installed under the soil discharge port or Zuritro.

After the shield propulsion jack 14 is contracted, the erector 9 mounted on the erector ring 91 rotatably supported by the ring garter 7 is used in the space of the shield rear trunk portion 4 of the formed tunnel space. The inner wall surface of the excavated tunnel will be lined with segments that are lining materials. After that, the shield propelling jack 14 is pressed against the newly lined segment 16 to uniformly extend the shield propelling jack 14 provided on the peripheral wall of the shield excavator to take a propulsive reaction force, thereby advancing the shield excavator. . Repeat the above steps to build a tunnel,
Moreover, in the construction of the curved portion, the middle bent jack 15 on one side
The curved part of the tunnel is being constructed by extending and bending the shield excavator.

As described above, the bending type shield excavator is used to construct a tunnel having a straight line portion and a curved line portion, and the segment 16 is lifted by the erector 9.
Since the segment 16 is lined on the entire inner wall surface of the excavated tunnel, the erector 9 needs to be rotationally driven in the shield rear trunk portion 4. However, Erecta 9
The segment grip 11 for lifting the segment and pressing the segment 16 against the inner wall surface of the tunnel for lining
Is provided with a hydraulic jack that moves up and down. The hydraulic jack is connected to the hydraulic block of the shield body by a hydraulic hose, and the rotatable range of the erector 9 is restricted by the length of the hydraulic hose. The erector rotation angle detector 13 for detecting the rotation angle so that the erector ring 91 to which the erector 9 is attached by the erector rotation drive motor 8 does not rotate more than a required angle.
Is attached to the erector ring 91.

6 to 8 show a conventional erector ring 91.
An external tooth type in which a pinion 17 is formed on the outer side of the, and the number of shield propulsion jacks 14 and center-folding jacks 15 is relatively small, and the shield plate 2 and the erector ring 9
In the case where there is a gap between the pinion 17 and the erector rotation drive motor 8 and the erector rotation angle detector 13, the gear 18 meshes with the gear 18 of the erector rotation drive motor 8 provided outside the pinion 17. And drive it to rotate,
At the same time, the pinion 17 and the erector rotation angle detector 13
The rotation angle of the elector ring 91 is detected by meshing with and.

9 to 11 show an internal tooth type in which a pinion 17 is formed on the inside of a conventional erector ring 91, and an erector rotation drive motor 8 and an erector rotation are provided between the shield plate 2 and the erector ring 91. When the space for installing the two members of the angle detector 13 is small, the erector rotation drive motor 8 and the erector rotation angle detector 13 are installed in the opening 10 inside the erector ring 91, and the pinion 17 is provided inside thereof. The rotation angle of the erector ring 91 is detected by meshing with the gear 18 of the erector rotation drive motor 8 provided, and at the same time meshing with the pinion 17 and the erector rotation angle detector 13.

[0013]

However, when excavating a tunnel having a curved portion, in particular, a tunnel having a small radius of curvature in the curved portion of the tunnel by the above-mentioned conventional bending type shield excavator, as shown in FIG. In the bending type shield excavator which is a tooth type and has the erector rotation drive motor 8 and the erector rotation angle detector 13 installed on the side of the opening 10 inside the erector ring 91, in a bending type shield excavator, an intermediate portion or a rear portion of the excavated earth and sand discharging device 12 is bent. There is a risk that the part may collide with the erector rotation drive motor 8 and the erector rotation angle detector 13 provided in the opening 10 of the erector ring 91.

As described above, the erector rotation drive motor 8 and the erector rotation angle detector 13 are installed so as to project into the opening 10 inside the erector ring 91.
It is not preferable for bending the shield excavator. Further, the internal tooth type opening 10 has a protrusion, and the fact that the protrusion 10 narrows the opening 10 also makes it possible for an operator who carries in and out the material to and from the face to perform maintenance work. It is inconvenient and not preferable in terms of work efficiency. For this reason, the opening 1 inside the erector ring 91 is used for installing other equipment, and for carrying in and out of materials and the entrance and exit of workers.
I want to make the diameter of 0 as large as possible, I want to increase the jacking force to increase the propulsion force of the jack to improve the direction control during curved construction, and the middle bending to increase the propulsion force of the jack There was a problem that I wanted to secure a place for jack addition.

Therefore, the present invention has been made in view of the above-mentioned problems, and in an external tooth type bending type shield excavator in which a pinion for rotational drive is formed outside the erector ring, the shield plate and the erector ring are provided. The erector rotation drive motor and the erector rotation angle detector are integrally installed in a vertical manner between the two, and the gear of the erector rotation drive motor and the pinion are meshed with each other to rotate and drive the erector ring and the erector rotation angle detector. We provide a bending type shield excavator that engages with and integrates with a large-diameter jack in the vacant space between the shield plate and the erector ring to add a shield propulsion jack or a center folding jack. The purpose is to do.

[0016]

In order to achieve the above object, the invention according to claim 1 of the present invention is such that a pinion for rotation drive is formed outside the erector ring of a shield excavator to form an external tooth type. In the bent type shield excavator, a vertically-installed erector rotation drive motor and erector rotation angle detector are installed between the shield plate and the erector ring, and the pinion and erector formed outside the erector ring are installed. The present invention is characterized in that the ring is driven to rotate by meshing with the gear of the rotary drive motor.

In order to achieve the above-mentioned object, the invention according to claim 2 of the present invention is a bending type in which a pinion for rotational drive is formed outside the erector ring of a shield excavator and is an external tooth type. In the shield excavator, a vertically-installed erector rotation drive motor and erector rotation angle detector are installed between the shield plate and the erector ring, and the pinion and erector ring rotation drive formed outside the erector ring are installed. It is characterized by meshing with a gear of a motor for rotational driving, and installing a large-diameter jack between the shield plate and the erector ring. In order to achieve the above purpose,
The invention described in claims 3 to 5 of the present invention is characterized in that the jack is a shield propulsion jack or a center-folded jack, or a shield propulsion jack and a center-folded jack.

In order to achieve the above-mentioned object, the invention according to claim 6 of the present invention is of a bending type in which a pinion for rotational drive is formed on the outside of an erector ring of a shield excavator and an external tooth type is used. In the shield excavator, a vertically-installed erector rotation drive motor and erector rotation angle detector are installed between the shield plate and the erector ring, and the pinion and erector ring rotation drive formed outside the erector ring are installed. It is characterized by meshing with the gear of the motor to drive the rotation and adding a jack between the shield plate and the erector ring. Further, in order to achieve the above-mentioned object, the invention according to claims 7 to 9 of the present invention is characterized in that the jack is a shield propulsion jack or a center folding jack, or a shield propulsion jack and a center folding jack. It is a thing.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
4 will be described. FIG. 1 is a cross-sectional view of a shield excavator equipped with an integrated erector rotary drive motor and a rotation angle detector of the present invention, FIG. 2 is a conceptual view of installation along the line EE in FIG. 1, and FIG. FIG. 1 is a cross-sectional view of the shield excavator in which the center-breaking jack is added, and FIG. 4 is a cross-sectional view of the shield excavator in which the shield propulsion jack is further added in FIG.

In the shield excavator of the present invention, as in the shield excavator described above, the shield excavator main body is divided into a shield front body part 3 and a shield rear body part 4, and the shield front body part 3 and the shield rear body part. 4 has an overlapping portion 19, connects the respective body portions 3 and 4 so as to be bendable, and forms both body portions 3,
A plurality of shield propulsion jacks 14 and a center folding jack 15 are provided between the four, and the shield front body portion 3 is provided with a front cutter head 1 for excavating a face face of a tunnel on the front surface, and a front cutter is driven by a driving device (not shown). The head 1 is rotationally driven.

Further, on the shield rear body part 4, an erector 9 mounted on an erector ring 91 rotatably supported by a ring garter 7, a segment assembly scaffolding device,
A shield propulsion jack 14, a center folding jack 15, an excavated earth and sand unloading device 12, an unloading gate opening / closing device, an unloading drive device, a device for controlling the drive of each device, etc. (none of which are shown) are provided. Has been.

In the shield excavator, the shield propelling jack 1 is attached to the already-built segment 16 on the inner wall surface of the tunnel.
4, one end of 4 is pressed, the shield propulsion jack 14 provided along the peripheral wall of the shield excavator is evenly extended, and a propulsion reaction force is taken to advance the shield excavator.
At the same time, the front cutter head 1 provided on the front surface of the shield front body portion 3 is pressed against the face to excavate the face, and the excavated earth and sand is taken into the face chamber. The earth and sand taken into the face chamber is taken into an excavated earth and sand discharging device 12 having a conveying means such as an earth discharging screw conveyor, and then conveyed to the rear of the excavating earth and sand discharging device 12.

After the shield propulsion jack 14 is contracted, the erector 9 attached to the erector ring 91 rotatably supported by the ring garter 7 is used in the space of the shield rear trunk portion 4 of the formed tunnel space. The inner wall surface of the excavated tunnel is lined with a segment that is a lining material.
By advancing the shield excavating machine by advancing the shield excavating machine while extending, the front face cutter head 1 is pressed against the face face to excavate the face face and the curved portion of the tunnel is constructed.

A ring gutter 7 is provided inside the shield rear body portion 4, and a plurality of shield propulsion jacks are provided between the inner peripheral surface of the shield rear body portion 4 and the outer peripheral surface of the ring gutter 7. 14 and 14 and the middle folding jacks 15 and 15 are installed. Further, an erector ring 91 having the same diameter as the ring garter 7 is provided adjacent to each other. The erector ring 91 is formed by a plurality of erector support rollers 6 and 6 provided on the inner peripheral surface of the shield rear trunk portion 4. It is rotatably supported. And this Erector Ring 9
1, an erector 9 is attached, and this erector 9 is provided with a hydraulic jack that lifts a segment 16 and vertically moves a segment grip 11 for pressing the segment 16 against the inner wall surface of the tunnel for lining. There is.

The inner peripheral surface of the shield rear body portion 4 of the ring gutter 7 is provided with an integrated erector rotation drive motor 8
And an erector rotation angle detector 13 are mounted in a radial vertical type. A gear 18 is attached to the erector rotation drive motor 8, and the gear 18 is
Erector 9 formed on the outer circumference of the erector ring 91
Is engaged with the pinion 17 for rotational driving of the rectifier and the gear 18 of the erector rotation angle detector 13, the erector ring 91 of the erector 9 is rotatably driven, and the erector rotation angle detector 13 is rotated. Detects the rotation angle of.

By integrating the rotary drive motor 8 and the erector rotation angle detector 13 in this way, the space occupied by a single erector rotation angle detector 13 in the related art is vacant, and the shield propulsion jack is provided. It is possible to install a large-diameter jack 14 or the center folding jack 15. Then, the thrust of the jack can be increased by increasing the diameter of the shield propulsion jack 14 or the center-folded jack 15.

Further, as shown in FIG. 3, instead of increasing the diameters of the shield propulsion jack 14 and the center-folding jack 15, a new center-folding jack 15 can be added. Then, by adding the middle-breaking jack 15, it is possible to increase the propulsive force of the jack and improve the direction control during curved construction.

Further, as shown in FIG. 4, instead of increasing the diameters of the shield propulsion jack 14 and the center folding jack 15, the shield propulsion jack 14 and the center folding jack 15 can be newly added. Then, by adding the shield propulsion jack 14 and the center-bending jack 15, the propulsive force of the jack can be increased, and the direction control during curved construction can be improved.

[0029]

As described above, according to the bending type shield excavator in which the hydraulic motor and the rotation angle detector of the present invention are integrated, the rotation drive pinion is formed outside the erector ring. In addition to the tooth type, the erector rotation drive motor and the erector rotation angle detector are vertically integrated and installed between the shield plate and the erector ring.

Then, by integrating them, a large-diameter jack is installed in the vacant space between the shield plate and the erector ring, or a shield propulsion jack or a center-folding jack is added to open the inside of the erector ring. There is no protrusion of the erector rotation drive motor, erector rotation angle detector, etc. on the part side, and the conventional bending type shield excavation in which the hydraulic motor and the rotation angle detector are separately provided between the shield plate and the erector ring. Compared to the machine, since it can be integrated in the vertical type, there is more space in terms of space, so it is possible to increase the propulsive force of the jack by increasing the diameter of each jack, and at the same time, the shield propulsion jack or the center-folded jack. By increasing the number of jacks, the propulsive force of the jack is increased and the direction control during curved construction is improved. Thereby, an effect called.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a shield excavator equipped with an integrated erector rotation drive motor and rotation angle detector of the present invention,

FIG. 2 is a conceptual diagram of installation along the line EE in FIG.

FIG. 3 is a cross-sectional view of a shield excavator in which a center-breaking jack is added to FIG. 1,

FIG. 4 is a cross-sectional view of a shield excavator in which a shield propulsion jack is further added in FIG.

FIG. 5 is a longitudinal sectional view of the shield excavator,

FIG. 6 is a schematic view of a conventional external tooth type erector ring,

7 is a partially enlarged view of the erector rotation drive motor mounting portion of FIG. 6,

FIG. 8 is a partially enlarged view of the erector rotation angle detector mounting portion of FIG. 6,

FIG. 9 is a schematic view of a conventional internal tooth type erector ring,

10 is a partially enlarged view of the erector rotation drive motor mounting portion of FIG. 9,

FIG. 11 is a partially enlarged view of the erector rotation angle detector mounting portion of FIG. 9.

[Explanation of symbols]

1 front cutter, 2 shield plate, 3 shield front body part, 4 shield rear body part, 5 bulkhead, 6
Erector support roller, 7 ring garter, 8 erector rotation drive motor, 9 erector, 91 erector ring, 10 opening part, 11 segment gripping part, 12 excavated sediment discharge device, 13 erector rotation angle detector, 14 shield propulsion jack, 15
Middle folding jack, 16 segment, 17 pinion, 18 gear, 19 overlap.

Claims (9)

[Claims] 1. A bending type shield excavator in which a pinion for rotational drive is formed outside an erector ring of a shield excavator and has external teeth, and an erector rotation drive motor and an erector are provided between a shield plate and an erector ring. A bending type shield characterized in that a rotation angle detector is integrated vertically and installed, and a pinion formed on the outside of the erector ring is meshed with a gear of an erector ring-rotation drive motor to drive the rotation. Excavator. 2. A bending type shield excavator in which a pinion for rotational drive is formed outside the erector ring of the shield excavator and has external teeth, and an erector rotation drive motor and an erector are provided between the shield plate and the erector ring. The rotation angle detector is integrated vertically and installed, and the pinion formed on the outside of the erector ring meshes with the gear of the erector ring-rotation drive motor to drive the rotation, and the existing cylinder has a large diameter. Bending type shield excavator characterized by being made. 3. The bending type shield excavator according to claim 2, wherein the large-diameter jack is a shield propulsion jack. 4. The bending type shield excavator according to claim 2, wherein the large-diameter jack is a center-folded jack jack. 5. The bending type shield excavator according to claim 2, wherein the large-diameter jacks are a shield propulsion jack and a center-folding jack. 6. A bending type shield excavator in which a pinion for rotational drive is formed outside the erector ring of the shield excavator and has external teeth, and an erector rotation drive motor and an erector are provided between the shield plate and the erector ring. A rotation angle detector and a vertical type are integrated and installed, and the pinion formed on the outside of the erector ring and the gear of the erector ring-rotation drive motor are meshed and driven to rotate, and the shield plate and the erector ring Bending type shield excavator characterized by adding a jack in between. 7. The bending type shield excavator according to claim 6, wherein the jack is a shield propulsion jack. 8. The bending type shield excavator according to claim 6, wherein the jack is a center-folded jack jack. 9. The bending type shield excavator according to claim 6, wherein the jacks are a shield propulsion jack and a center folding jack.