JPS6250597A - Segment feed apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention provides a segment arranged on the inner peripheral surface of a tunnel,
The present invention relates to a device for assembling the segments and transporting them below the segment erector that lines the tunnel.

(Prior Art) Segments to be assembled as a primary lining on the inner peripheral surface of a tunnel are first placed below a segment erector for assembling them, and then gripped at a predetermined location by a gripper of the segment erector, after that,
It is lifted by the segment erector and assembled into the existing segment or lining.

Since the segment erector has a defined position and orientation for gripping the segment by the gripper, it cannot grip the segment unless the segment is placed at a predetermined position and in a predetermined orientation. For this reason, in the past, after the segments were transported below the segment erector by a crane, the position and posture of the segments with respect to the segment erector were manually corrected, which required a large amount of manpower to assemble the segments. there was.

In order to eliminate this drawback, a conveying device comprising a rail and a truck that moves along the rail is used, the segment is placed on the truck, and the truck is moved below the segment erector. It is conceivable to transport the segments below the segment erector.

However, since the conveying device has to lay the rail below the segment erector, the rail becomes an obstacle when assembling the segment to an existing segment below the rail.

(Object of the Invention) An object of the present invention is to provide a segment conveyance device that can convey the segments below the segment erector without interfering with the assembly of the segments.

(Structure of the Invention) The present invention provides a device for transporting segments for tunnel lining below a segment erector provided in a shield body, which comprises a frame disposed at the bottom of the tunnel, and a frame disposed at the bottom of the tunnel; The present invention includes a rail assembly supported movably in the axial direction of the tunnel, and a movable platform disposed on the rail assembly so as to be movable in the axial direction for transporting the segment.

(Effects of the Invention) According to the present invention, the segment is transported below the segment erector by moving the moving platform along the rail assembly, so that the segment is placed in the correct position and orientation with respect to the segment erector. can be placed. Moreover, when the segment is placed below the rail assembly, the rail assembly can be moved backward, and the rail assembly does not interfere with the assembly work of the segment.

(Example) Embodiments of the present invention shown in the drawings will be described below.

The segment conveying device 10 shown in FIG.
2 from the lining 14 in the tunnel to below the segment erector 18 provided at the rear of the shield body 16 of the shield tunnel excavator.
placed between. The shield main body 16 is advanced by a plurality of propulsion jacks 20 that generate a reaction force on the lining 14.

The erector 18 has its axis (hereinafter referred to as
A ring 22 is rotatably arranged around the Z axis.
a plurality of arms 24 disposed around the ring at intervals in the circumferential direction thereof and extending rearwardly from the ring; and segments to be lined disposed on the arms in a movable manner in the diametrical direction of the ring 22; 12, and a drive mechanism 28 that moves the gripping mechanism along one axis (hereinafter referred to as the Y-axis) that is orthogonal to the Z-axis and extends in the diametrical direction of the ring 22.

The ring 22 is supported by the shield body 16 by a plurality of guide rollers 30 provided on the inner peripheral surface of the shield body 16, and is rotated by a rotation mechanism 32 such as a motor.

The gripping mechanism 26 includes a plurality of sliding shafts 34 that extend through each of the arms 24 so as to be movable in the Y-axis direction. A stand 36 is connected to each sliding shaft 34, and the stand 36 has a segment 1.
The segment guide 38 that guides the posture of the connecting member 4
0, the segment guide 38 has a gripper 42 that grips the segment 12.

As shown in FIG. 2, the gripper 42 includes a first member 44 supported by the segment guide 38 and a second member 46 movably supported by the first member. Second
The member 46 has a pin 48 inserted into a hole provided in the segment 12 and is moved relative to the first member 44 by a jack 50.

The conveyance device 10 includes a frame 52 disposed at the bottom of the lining 14, a rail assembly 54 supported by the frame so as to be movable in the Z-axis direction, and a rail assembly 54 supported by the frame so as to be movable in the Z-axis direction. The moving platform 56 includes a moving platform 56 disposed at the rail assembly 54, and a drive mechanism 58 for linearly moving the moving platform with respect to the rail assembly 54.

As shown in FIGS. 3 and 4, the frame 52 has a strip-shaped bottom portion 60 and rising portions 62 rising from both widthwise edges of the bottom portion, and the longitudinal direction of the bottom portion 60 extends along the Z
It is placed on the lining 14 in the axial direction and is pulled forward by the shield body 16. Each rising portion 62 is
The groove 64 extends in the longitudinal direction of the bottom portion 60 and is opened inwardly at each opposing position and extends in the longitudinal direction of the rising portion 62.

As shown in FIGS. 2 and 5, the rail assembly 54 includes a pair of elongated rails 66 extending in the Z-axis direction. The two rails 66 are arranged at intervals in the longitudinal direction. They are interconnected by a plurality of connecting members 68 and extend parallel to each other.

As shown in FIGS. 4 and 5, a plurality of wheels 70 are rotatably attached to the rail 66 and spaced apart from each other in its longitudinal direction.

As shown in FIG. 4, each wheel 70 is rotatably supported by a shaft 72 that passes through the rail 66 in the width direction thereof. Each shaft 72 is fixed to the rail 66 by a nut 74. Each shaft 72 is disposed on a widthwise side of the rail assembly 54 and is received in a groove 64 in the frame 52 such that the rail assembly 54
It moves within the groove 64 when it moves.

As shown in FIG. 4, the rail 66 fixes a guide 76 for preventing the movable platform 56 from being displaced in the width direction of the rail assembly 54. The guide 76 is connected to the rail 6
A groove 78 extending in the longitudinal direction of the rail 66 is provided in the zero guide 76 extending in the longitudinal direction of the rail 66 . The groove 78 opens outward in the width direction of the rail assembly 54 .

Each rail 66 includes, as shown in FIGS. 4 and 5,
A plurality of balls 80 that receive the movable table 56 are rotatably provided by a stopper 82. Each ball 80 is arranged at intervals in the longitudinal direction of the rail 66 and projects above the guide 76.

As shown in FIGS. 2 and 5, stoppers 84 and 86 are provided at the front and rear ends of the rail assembly 54 to define the movable range of the movable platform 56. As shown in FIGS. A rail assembly 5 is attached to the shield body 16 when the segment 12 is transported.
Receive the tip of 4.

A support fitting 88 is provided to support this.

As shown in FIGS. 2, 5, and 6, the movable table 56 has a pair of strip-shaped sliders 90 that move in the longitudinal direction on the rail 66 and are interconnected by a connecting member 92. Slider 90 has a groove 94 on the side of rail 66 that receives ball 80 of rail assembly 54 . Groove 94 extends in the longitudinal direction of slider 90.

Each slider 90 is provided with a positioning plate 96. A portion of the positioning plate 96 is in the groove 78 of the guide 76.
The carriage 56 is received in the rail assembly 54 .
When moving, it moves within the groove 78.

The segment 12 is mounted on a moving table 56 at the front end of the slider 90.
A spring 98 is provided to facilitate mounting on the device, and a pair of sensors 100 are provided at the rear end.

Each sensor 100 is supported by a sensor stand 102 extending upward from the rear end of the slider 90, and detects the lower edge of the segment guide 38 when the elec- tor 18 is lowered. The detection signal of the sensor 100 is used as a signal for controlling the lowering position of the erector 18 when the gripper 42 grips the segment 12.

As shown in FIGS. 2 and 6, the drive mechanism 58 includes a chain 104 provided on the rail assembly 54, a rotation source 106 provided on the moving table 56, and is rotated by the rotation source and rotates the chain 104. A chain 104, including a sprocket 108 that engages a sprocket 108, is supported by a support 110 attached to the rail assembly 54 and extends between the rails 66 in the Z-axis direction.

The transport device IO also includes a posture sensing mechanism 112 for detecting the posture of the transport device 10 with respect to the shield body 16. The posture sensing mechanism 112 includes a pair of pillars extending upward from the rear end of the rail assembly 54. 114, and a pair of posture sensors 116 provided at the top of the column.

Each posture sensor 116 has one of the posture sensors 116 in FIGS.
As shown, the box-shaped frame 11 attached to the pillar 114
8, a pair of first rods 120 provided in parallel to the upper and lower frames of the frame 11B, and a first rack 122 provided in parallel to the first rods 120 in the upper frame of the frame 11B; 1st
a pair of moving bodies 124 supported movably in the axial direction by rods 120; a first rotary encoder 126 attached to the moving body 124 located above; and a first rotary encoder 126 attached to the rotary encoders. Rack 12
A first gear 128 that meshes with the internal moving body 12 and an end that meshes with the internal moving body
4, and a pair of second rods 132, both ends of which are attached to the internal affairs moving body 124.
and a detection table 13 movably supported by the second rod.
4, a second rotary encoder 136 attached to the detection stand, and a second rotary encoder 136 attached to the rotary encoder,
A second gear 138 that meshes with the second rack 130 is provided, and a light receiving element 1 such as a photodiode is mounted on the detection stand 134.
There are 40.

Each sensor 116 is connected to a column 1 such that a first rod 120 extends in the direction of an axis (hereinafter referred to as the X-axis) perpendicular to the Y-axis and the Z-axis, and a second rod 132 extends in the Y-axis direction.
It is fixed at 14. Each detection stand 134 has first and second
is moved along the rods 120, 132 of. Detection stand 1
34 may be moved by a drive mechanism such as a motor, or may be moved manually.

The first rotary encoder 126 is rotated by the first rack 122 and the first gear 128 when the detection table 134 is moved in the X-axis direction, and the first rotary encoder 126 corresponds to the amount of movement of the detection table 134 at that time. Outputs an electrical signal and also outputs a second
The rotary encoder 136 is rotated by the second rack 130 and second gear 138 when the detection table 134 is moved in the Y-axis direction, and the rotary encoder 136 is rotated by the second rack 130 and the second gear 138 to
Outputs an electrical signal corresponding to the amount of movement.

The output signal of each rotary encoder 122, 136 is used as a signal for determining the attitude of the segment 12 with respect to the shield body 16 and the erector 18, and controlling the attitude of the segment guide 38.

When transporting segment) 12, the frame 52 of the transport device IO
The rail assembly 54 is placed on the bottom of the lining 14 so as to extend in the Z-axis direction.
It is advanced in the axial direction, and its tip is supported by a support fitting 88. Thereby, the rail assembly 54 is supported by the frame 52 and the support fittings 88. In this state, the detection stand 134 of the attitude sensing mechanism 112 is moved, and the shield body 1
The attitude of the transport device lO with respect to 6 is sensed.

The carriage 56 is then retracted and the segment 12 is attached to it.
is placed. Once segment 12 is placed, drive mechanism 58 is actuated.

The moving table 56 is moved below the erector 18. As a result, the segment 12 on the movable table is transported below the erector 18.

Next, the first gripping mechanism 26 is lowered and the segment 12 is gripped by the gripper 42 . At this time, the sensor 100
The lower edge of the segment guide 38 is sensed. Upon gripping the segment 12, the erector 18 lifts the segment, assembles it in place on the lining l4, and then returns to its initial position.

After that, the moving table 56 is moved backward, the segment 12 is placed on the moving table 56, the moving table 56 is moved forward, and the erector 1
The process of assembling the segments to the lining 14 in step 8 is repeated multiple times.

When assembling the segment 12 to the lining at the bottom of the tunnel, the rail assembly 54 will get in the way, so the transported segment 12 is grasped by the erector 18, and the rail assembly 54 is moved backward while being lifted. After the segments 12 are in place, the rail assembly 54 may be advanced again.

According to the transport device MlO, by placing the segment 12 in the correct position and in the correct attitude on the moving table 56, the segment 12 can be placed in the correct position and in the correct attitude with respect to the erector 18. When placing the segment 12 below the rail assembly 54, the rail assembly 5
4 only needs to be moved backward, and the rail assembly 54 does not interfere with the assembly work of the segments 12.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing the rear part of the shield main body, FIG. 2 is a vertical cross-sectional view showing an embodiment of the conveying device of the present invention, and FIG. 3 is a right side view of the conveying device shown in FIG. Figure 4 shows the second W
- A sectional view taken along line W, FIG. 5 is a plan view of the frame and rail assembly, FIG. 6 is a plan view of the moving platform, and FIG. 7 is a front view showing an embodiment of the attitude sensor. FIG. 8 is a plan view of the attitude sensor, FIG. 9 is a cross-sectional view taken along the seventh 11+-1 X-line, and FIG. 10 is a cross-sectional view taken along the ninth X-X line. . 12: Segment, 14: Lining, 16: Shield body, 18: Segment erector, 52
: Frame, 54: Rail assembly, 56: Moving table, 58: Drive mechanism, 64: Groove. 66: Rail, 68: Connecting member, 70: Wheel,
80: Ball, 90 Nislider, 92
: Connecting member. Agent Patent Attorney Nobuyuki Matsunaga Figure 4 Figure 7 I [Figure 8 Figure 9 X! L. Figure 10

Claims (5)

[Claims] (1) A device for transporting segments for tunnel lining below a segment erector provided in a shield main body, which includes a frame disposed at the bottom of the tunnel, and a frame arranged on the bottom of the tunnel in the axial direction of the tunnel. A segment transport device, comprising: a movably supported rail assembly; and a movable platform movably disposed on the rail assembly in the axial direction for transporting the segment. (2) The rail assembly includes a pair of rails extending in the axial direction, a plurality of connecting members interconnecting the rails, and a plurality of first connecting members rotatably supported by the rails and contacting the frame. The segment conveyance device according to claim 1, comprising: a rotating body; and a plurality of second rotating bodies rotatably supported by the rail and receiving the movable base. (3) The segment conveyance device according to claim (2), wherein the first rotating body is a wheel, and the second rotating body is a ball. (4) The movable table includes a pair of sliders extending in the axial direction and a connecting member that connects the sliders to each other, and the slider has a groove for receiving the ball. ) The segment conveyance device described in item 2. (5) The movable base has a drive mechanism that reciprocates the movable base in the axial direction with respect to the rail assembly, according to any one of claims (1) to (4). Segment transport device as described.