JP2891641B2 - Electa device of tunnel excavator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elector device of a tunnel excavator for assembling a lining piece.

[0002]

2. Description of the Related Art A shield excavator is known as a tunnel excavator, and a cutter head is provided in front of the shield excavator. The cutter head is provided with a cutter disk, and the ground is excavated by rotating the cutter disk. After excavation with a cutter disk, a segment is constructed as a lining material to form a tunnel. The construction of the segments is performed by an erector device provided behind the shield excavator.

An example of a conventional erector device will be described with reference to FIG. FIG. 11 shows a cross section of a conventional erector device. A support frame 2 is provided in a shield tail portion 1 of the shield excavator. One end of a center shaft 3 is rotatably supported at the center of the support frame 2. The other end of the center shaft 3 is rotatably supported by a support leg 4. A drive motor 5 is attached to the support frame 2, and the center shaft 3 is rotated by the drive of the drive motor 5. A support sleeve 6 is provided on the support frame 2, and a support ring 7 is supported on the support sleeve 6 movably in the axial direction of the center shaft 3. The support ring 7 is reciprocated in the axial direction of the center shaft 3 by expansion and contraction of the jack 8. The first grip 9 is attached to the support ring 7.
The first grip 9 is provided with a plurality of grip portions 10 for gripping the segment pieces 14 at equal intervals in the circumferential direction. The support sleeve 6 is provided with a second grip 11, and the first grip 11 is provided with a plurality of grip portions 12 for gripping the segment pieces 14 at equal intervals in the circumferential direction. The grip 10 and the grip 12 are movable in the radial direction of the center shaft 3 by a moving device (not shown).

In the elector device shown in FIG. 11, a grip 10 of a first grip 9 and a grip 1 of a second grip 11 are provided.
2, the center piece 3 is rotated by the drive of the drive motor 5 to position the segment piece 14 in the rotation direction, and the jack 8 expands and contracts to support the first grip 9 via the support ring 7. Is moved in the axial direction to
Is performed in the axial direction. After positioning the segment piece 14, the gripper 10 and the gripper 12 are moved in the radial direction to move the segment piece 14 toward the inner wall surface of the excavation, and are connected to the existing segment 13 to construct a tunnel.

[0005] Another example of the conventional erector device will be described with reference to FIG. FIG. 12 shows a cross section of a conventional erector device according to another example. A support frame 22 is provided in a shield tail portion 21 of the shield excavator. One end of a center shaft 23 is fixed to the center of the support frame 22, and the other end of the center shaft 23 is fixed to a support leg 24. The support frame 22 is provided with a first grip 25 and a second grip 26 so as to be pivotable. The first grip 25 and the second grip 26
Swivel ring 28 swiveled by
A vertical arm 30 which is provided so as to be extendable and retractable, has an outer shape U-shaped,
The vertical arm 30 is provided at a tip thereof with a grip portion 32 which is moved in the axial direction of the center shaft 23 by driving a horizontal jack 31 and grips a segment piece.

In the elector device shown in FIG. 12, the segment pieces are gripped by the grip portions 32 of the first grip 25 and the second grip 26, and the respective rotation motors 27 drive the rotation ring 28 to rotate the segment pieces. In addition to individually performing positioning in the rotation direction, the vertical arm 30 is expanded and contracted by driving the vertical jack 29 to individually move the segment pieces to the inner wall surface of the excavation.
The driving of the horizontal jack 31 moves the grip portion 32 in the horizontal direction to individually position the segment pieces in the axial direction. After individually positioning the segment pieces, they are connected to the existing segment 33, and the above operation is performed over the entire circumference of the inner wall surface of the excavation to construct a tunnel.

[0007]

In the conventional erector device shown in FIG. 11, the positioning of the gripper 10 and the gripper 12 in the rotational direction is performed by rotating the center shaft 3 by driving one drive motor 5. ing. For this reason,
The fine adjustment work for the existing segment 13 requires time, and the work efficiency is poor, and the tunnel construction time is long. The conventional erector device shown in FIG.
Although the first grip 25 and the second grip 26 can be turned independently, when the first grip 25 and the second grip 26 are turned independently, there is a possibility that the turned grip may interfere with the other grip. As a result, the turning angle is limited. In addition, since the first grip 25 and the second grip 26 have only one grip portion 32, the work efficiency is poor and a long tunnel construction time is required.

The present invention has been made in view of the above circumstances, and has as its object to provide an erector device for a tunnel excavator capable of efficiently constructing a tunnel.

[0009]

According to an aspect of the present invention, there is provided an elector apparatus for a tunnel excavator, comprising: a support ring extending in an axial direction of a tunnel; and a first grip rotatably provided on the support ring. And a driving device for rotatably driving the first grip and the second grip, the driving device being provided with a second grip rotatably provided on the support ring at intervals in the axial direction, A plurality of first gripping portions that are movable in the radial direction and grip the lining material piece are provided in the circumferential direction of the outer periphery of the first grip, and the first jack that drives the axial movement of the first gripping portion is provided. A plurality of second gripping portions are provided on the first grip and are provided in the circumferential direction of the outer periphery of the second grip so as to be movable in the axial direction and the radial direction of the tunnel and grip the lining material piece. Direction drive Characterized in that a movement stroke in the axial direction is shorter second jack to the second grip than said first jack performed.

The first grip is disposed on the front side in the digging direction, and the trapezoidal lining material piece is gripped by the first gripping portion with the long side of the trapezoidal lining material facing forward in the digging direction. Side, the trapezoidal lining piece is gripped by the second gripping part with the short side of the tunnel facing forward in the digging direction, and the long side and the short side of the lining piece are reversed, so that the periphery of the tunnel is The lining material pieces are constructed by alternately arranging in the directions.

[0011]

The wrapping material piece is gripped by the first gripping portion of the first grip and the second gripping portion of the second grip, and the first grip and the second grip are rotated with respect to the support ring by the driving device, thereby performing the lining. The material piece is positioned. The second grip portion of the second grip located on the rear side in the excavation direction is moved in the radial direction while being moved in the axial direction by the second jack, and the positioning of the lining material piece gripped by the second grip portion is adjusted to perform the existing adjustment. To the lining material. Next, the first gripping portion of the first grip located on the front side in the excavation direction is moved in the radial direction and the first jack is axially moved by the first jack, and the lining material gripped by the first gripping portion is moved. The positioning of the pieces is adjusted, the lining material pieces gripped by the first gripping part are connected between the lining material pieces connected using the second gripping part, and one ring-shaped lining material is constructed. . Further, a plurality of trapezoidal lining material pieces are used as the lining material pieces, and the long side portion and the short side portion of the lining material piece to be gripped by the first gripping portion and the second gripping portion are opposite to each other. The lining material pieces are constructed alternately in the circumferential direction.

[0012]

1 is a schematic side view of a tunnel excavator equipped with an erector device according to an embodiment of the present invention, and FIG.
3 is a view taken in the direction of the arrow III in FIG. 1, FIG. 4 is a side view showing details of the front grip, and FIG.
6 is a side view showing details of the rear grip, and FIG. 7 is a view taken along line VII-VII in FIG.

As shown in FIGS. 1 to 3, a cutter device 52 is provided at the front of a cylindrical excavator body 51, and a cutter disk 53 is rotatably provided on the cutter device 52. The cutter disc 53 is driven by a cutter turning motor 54, and excavates the ground by rotating the cutter disc 53. The excavator main body 51 is provided with a mud feeding pipe 55, and the mud feeding pipe 55 supplies pressure muddy water into the chamber 56. The pressure muddy water is mixed with the excavated earth and sand and discharged by the discharge pipe 57. Reference numeral 74 in FIG. 1 denotes a shield jack.

As shown in FIGS. 1 to 3, a support ring 59 is provided in a shield tail portion 58 of the excavator body 51.
Is provided, one end of the support ring 59 is supported by a partition plate 60 of the excavator body 51, and the other end is supported by a support leg 61. The support ring 59 is hollow, and a mud feed pipe 55 and a discharge pipe 57 are arranged inside the support ring 59. A front swing ring 62 is rotatably provided on the outer periphery of the support ring 59, and the front swing ring 62 is driven to rotate by a first drive motor 63 via a pinion 64 and a ring gear 65. A front grip 66 as a first grip is provided on the outer periphery of the front swivel ring 62 at three locations in the circumferential direction. The front grip 66 has a front grip 67 as a first grip on the axis of the support ring 59. It is movably supported in the direction and the radial direction (the axial direction and the radial direction of the tunnel). A rear turning ring 68 is rotatably provided on the outer periphery of the support ring 59 on the rear side of the front turning ring 62, and the rear turning ring 62 is rotated by a second drive motor 69 via a pinion 70 and a ring gear 71. It is driven dynamically. A rear grip 72 as a second grip is provided at three positions in the circumferential direction on the rear swing ring 62, and a rear grip 73 as a second grip is provided on the rear grip 72 in the axial direction and the radial direction of the support ring 59 (tunnel). (In the axial direction and the radial direction). That is, the front grip 66 and the rear grip 72 are independently rotated with respect to the support ring 59 by the driving of the first drive motor 63 and the second drive motor 69, respectively. The segment piece 79 as a lining material piece is carried in by a segment supply device (not shown), and the front grip portion 67 and the rear grip portion 73 are provided.
Is gripped.

The front grip 66 will be described with reference to FIGS. As shown in the figure, a front elevating base 76 is supported on the front swivel ring 63 via a link mechanism 75,
The link mechanism 75 is operated by driving the front lifting jack 77. When the front lifting jack 77 is driven, the front lifting base 76 is reciprocated in the radial direction of the tunnel (vertical direction in the figure). A front grip 67 is supported on the front elevating base 76 so as to be able to reciprocate in the axial direction of the tunnel (the left-right direction in FIG. 4), and the front grip 67 drives a front horizontal cylinder 78 as a first jack. Is reciprocated. The moving stroke H of the front horizontal cylinder 78 is set slightly longer than the axial length of the segment piece 79. The front grip 67 of the front grip 66 is movable in the axial and radial directions of the tunnel by the elevation of the front elevation base 76 driven by the front elevation jack 77 and the drive of the front horizontal cylinder 78. .

The rear grip 72 will be described with reference to FIGS. As shown in the figure, a base 80 is provided on the rear swing ring 68, and a rear elevating base 81 is supported on the base 80 so as to be able to move up and down. The rear lifting base 81 is driven up and down by a vertical jack 82 so as to be reciprocated in the radial direction of the tunnel (vertical direction in the figure).
A rear grip 67 is supported by the rear elevating base 81 so as to be able to reciprocate in the axial direction of the tunnel (the left-right direction in FIG. 6). The rear grip 67 is reciprocated by driving a rear horizontal cylinder 83 as a second jack. You. The moving stroke h of the rear horizontal cylinder 83 is set shorter than the moving stroke H of the first horizontal cylinder 78 for moving the front grip 67. Rear grip part 67 of rear grip 72
Is a rear lifting base 81 driven by a vertical jack 82.
And the drive of the rear horizontal cylinder 83 makes it possible to move in the axial and radial directions of the tunnel.

A method of assembling the segment piece 79 constructed by the above-described erector device will be described in detail with reference to FIGS. FIG. 8 shows a state in which the segment pieces are assembled, FIG. 9 shows a state in which the segment pieces are connected in the axial direction, and FIG. 10 shows a state in which the segment pieces are connected in the circumferential direction.

The segment piece 79 is a trapezoidal first segment piece 85 having tapered surfaces on both sides that gradually expand forward (toward the face) in the axial direction of the tunnel.
(Long side is a front side), and a trapezoidal second segment piece 86 (long side is a rear side) having tapered surfaces gradually enlarged rearward (toward a shaft) on both sides in the axial direction of the tunnel. The long segments and short segments of the first segment pieces 85 and the three second segment pieces 86 are alternately combined in opposite directions to form one ring, and the rings are connected in the axial direction to form a cylinder. Creates a hollow tunnel inner wall cavity.

As shown in FIG. 9, a hole 87 is formed in a side end face (an end face in the axial direction of the tunnel) between the rings of the first segment piece 85 and the second segment piece 86. By fitting a pin 88 as a wooden pushing pin (see FIG. 9A), the first segment piece 85 and the second segment piece 86 are connected and fixed in the axial direction. The center of the pin 88 is gradually thicker, and the large diameter portion is deformed by being fitted into the holes 87,
First segment piece 85 and second segment piece 87
And are firmly connected. As shown in FIG. 10, a groove 89 as an insertion guide is formed on a circumferential joining surface (tapered surface) of the first segment piece 86 and the second segment piece 87.
The first segment piece 85 and the second segment piece 86 are positioned and fixed in the circumferential direction by fitting the rods 90 as guide rods into the grooves 89. When assembling the first segment piece 85 and the second segment piece 86, the second segment pieces 86 whose long sides are on the rear side are assembled at intervals in the circumferential direction. The first segment pieces 85 whose sides are on the front side are combined.

The operation of the above-described erector device will be described. The first segment piece 85 and the second segment piece 86 are carried into a portion of the erector device by a segment supply device (not shown). The second drive motor 69 is driven to rotate the rear swing ring 68 so that the three rear grips 72
The second segment pieces 86 are sequentially gripped by the rear grip 73. After the second segment piece 86 is gripped by the three rear grips 73, the vertical jack 82 is driven to move the rear lifting base 81 radially outward, and the three rear grips 73 are moved toward the inner wall surface of the excavation. The second segment piece 86 is moved to face the existing segment. In this state, the rear horizontal cylinder 83 is driven to move the rear grip 73 toward the existing segment, and the pin 88 is fitted into the second segment piece 86 and the hole 87 of the existing segment by the thrust of the rear horizontal cylinder 83, The second segment piece 86 is connected and fixed to the existing segment. The three second segment pieces 86 are simultaneously connected and fixed to the existing segment. After the second segment piece 86 is connected and fixed, the shield jack 74 is extended and the end face of the second segment piece 86 is pushed to push the second segment piece 86 in the axial direction.
Support. Also, the vertical jack 82 of the rear grip 72
Drives the second segment piece 86 against the inner wall surface of the excavation to prevent the second segment piece 86 from falling down to the inner peripheral side and maintain a perfect circle.

After assembling the second segment piece 86, the first segment piece 85 whose long side is forward is connected and fixed between the second segment pieces 86 using the front grip 66. That is, by driving the first drive motor 63, the front swing ring 62 is rotated, and the first segment pieces 85 are sequentially gripped by the front grips 67 of the three front grips 66. After the first segment piece 85 is gripped by the three front grips 67, the front lifting jack 77
To drive the front elevating base 76 through the link mechanism 75.
Is moved radially outward, and the three front gripping portions 67 are moved toward the inner wall surface of the excavation to fit the rod 90 into the grooves 89 of the first segment piece 85 and the second segment piece 86. Thereby, the position adjustment of the first segment piece 85 and the second segment piece 86 in the circumferential direction is performed.
By driving the front horizontal cylinder 78 of the front grip 66, the front grip 67 is moved to the existing segment side, and the pin 8
5 is the first segment piece 85 and the hole 8 of the existing segment.
7, and the first segment piece 85 is connected and fixed to the existing segment. By assembling and fixing the three first segment pieces 85 and the three second segment pieces 86 to the existing segment, the assembly of one ring is completed.

According to the above-described elector device of the tunnel excavator, since the front grip 66 and the rear grip 72 are each independently rotatable, the trapezoidal first segment piece 85 and the second segment piece 86 can be aligned. It can be performed independently, and the segment pieces can be accurately assembled in a short time. Also, the movement stroke H of the front horizontal cylinder 78 of the front grip 66
Is set longer than the axial length of the segment piece 79 and the movement stroke h of the rear horizontal cylinder 83 of the rear grip 72, so that the front grip 67 of the front grip 66 interferes with the rear grip 72. And the trapezoidal first segment piece 85 can be assembled efficiently.

The first segment piece 8 for one ring
The number of the fifth and second segment pieces 86 is not limited to three, and the numbers of the front grip 66 and the rear grip 72 are not limited to three but can be changed depending on the size of the tunnel and the like. . Further, the link mechanism 75 and the front lifting jack 77 move the front grip 67 in the radial direction, and the vertical jack 82 moves the rear grip 73 in the radial direction. Can also be used.

[0024]

According to the erector device of the tunnel excavator of the present invention, the first grip and the second grip are independently provided on the support ring so as to be freely rotatable, and each grip has a grip portion for gripping the lining material piece. Direction, and the gripping part of each grip is rotatable independently, so that the positioning of the lining material pieces can be performed independently, and the lining material pieces can be accurately assembled in a short time. it can. In addition, since the axial movement stroke of the grip portion of the second grip is set shorter than the axial movement stroke of the grip portion of the first grip, the assembling of the lining material piece efficiently without interference between the grip portions. It can be performed. As a result, the assembling work of the lining material piece can be performed in a short time, the working time can be reduced, the tunnel can be efficiently constructed, and high-speed construction can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a tunnel excavator provided with an erector device according to one embodiment of the present invention.

FIG. 2 is a view taken along line II-II in FIG.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 1;

FIG. 4 is a side view showing details of a front grip.

FIG. 5 is a view taken along line VV in FIG. 4;

FIG. 6 is a side view showing details of a rear grip.

FIG. 7 is a view taken along line VII-VII in FIG. 6;

FIG. 8 is an explanatory view showing a state where the segment pieces are assembled.

FIG. 9 is an explanatory view of the connection state of the segment pieces in the axial direction.

FIG. 10 is an explanatory view of the connection state of the segment pieces in the circumferential direction.

FIG. 11 is a sectional view of a conventional erector device.

FIG. 12 is a sectional view of a conventional erector device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 51 excavator main body 52 cutter device 59 support ring 62 front turning ring 63 first drive motor 66 front grip 67 front gripping part 68 rear turning ring 69 second drive motor 72 rear grip 73 rear gripping part 76 front lifting base 77 Front lifting jack 78 Front horizontal cylinder 80 Base 81 Rear lifting base 82 Vertical jack 83 Rear horizontal cylinder 85 First segment piece 86 Second segment piece 87 Hole 88 Pin 89 Groove 90 Rod

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Takeshi Sakae 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Inside Taisei Corporation (72) Inventor Kenichi Kaneko 1-25, Nishishinjuku, Shinjuku-ku, Tokyo No. 1 Taisei Construction Co., Ltd. (72) Inventor Minoru Kaneko 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Inside Taisei Construction Co., Ltd. (72) Noriomi Yahara, Nishi-Shinjuku, Shinjuku-ku, Tokyo No. 25-1, Taisei Corporation (56) References JP-A-4-327699 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E21D 11/40

Claims (2)

(57) [Claims] 1. A support ring extending in the axial direction of a tunnel, a first grip rotatably provided on the support ring, and a second grip rotatably mounted on the support ring at an axial interval. Provided, each comprising a driving device for rotating the first grip and the second grip,
A plurality of first gripping portions that are movable in the axial direction and the radial direction of the tunnel and grip the lining material piece are provided in the circumferential direction of the outer periphery of the first grip, and the first gripping portions are driven to move in the axial direction. A first jack is provided on the first grip, and a plurality of second gripping portions that are movable in the axial direction and the radial direction of the tunnel and grip the lining material piece are provided in a circumferential direction of an outer periphery of the second grip. An elector device for a tunnel excavator, wherein a second jack having a shorter axial movement stroke than the first jack is provided on the second grip by driving the two gripping portions in the axial direction. 2. The method according to claim 1, wherein the first grip is disposed on the front side in the digging direction, and the long side of the trapezoidal lining material piece is gripped by the first gripping part with the long side of the trapping lining on the front side in the digging direction. Side, the trapezoidal lining piece is gripped by the second gripping part with the short side of the tunnel facing forward in the digging direction, and the long side and the short side of the lining piece are reversed, so that the periphery of the tunnel is The erector device for a tunnel excavator according to claim 1, wherein the lining material pieces are constructed alternately in the direction.