JPH0421800B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a segment erector for assembling segments in a tunnel excavated by a shield tunnel excavator.

(Prior art) An erector ring is arranged rotatably around its axis within a shield main body as one of the segment erectors for arranging lining segments on the inner peripheral surface of a tunnel excavated by a shield tunnel excavator. a pair of erector arms arranged at intervals in the circumferential direction of the erector ring and extending rearward from the erector ring; and a gripping device that is releasably supported and that releasably grips the segment. The gripping device includes a first support mechanism having a segment guide that contacts the lining segment to be assembled and guides it to a correct posture, and two support mechanisms extending in the diametrical direction of the erector ring. a second support mechanism fixed to the segment guide, the second support mechanism having a drive mechanism that moves in the direction of the axis, and an engaging portion that is engaged with the segment by being inserted into a hole provided in the segment; Equipped with

The segment erector described above has a plurality of locations of the segment guide brought into contact with the segment by moving the segment guide in the direction of the axis using the drive mechanism, and in this state, the engaging portion is moved to the provided part of the segment. Insert into the hole. Thereby, the segment is maintained in a posture determined by the segment guide.

However, in the segment erector described above, since the second support mechanism is fixed to the segment guide, the engaging portion must be inserted into the hole of the segment while the segment guide is in contact with the segment. Therefore, in the above-mentioned erector, if there is a gap between the segment guide and the segment, even if the engaging portion is inserted into the hole in the segment, the segment will move relative to the segment guide due to its own weight. It is not possible to maintain the posture defined by the segment guide, and on the other hand, if there is no gap, the engaging portion cannot be inserted into the hole and the segment cannot be gripped.

(Object of the Invention) The present invention reliably engages the engaging portion of the second support mechanism with the engaging portion of the segment to reliably grip the segment and maintain the segment in the posture defined by the segment guide. The purpose is to provide a segment erector that can.

(Structure of the Invention) The present invention provides a segment erector disposed at the rear of a shield body of a shield tunnel excavator, including an erector ring rotatably disposed within the shield body around its axis; a plurality of erector arms arranged at intervals in the circumferential direction of the erector ring and extending rearward from the erector ring; an axis extending in the direction of the axis within the shield body; a Z axis, orthogonal to the Z axis; When one axis extending in the diametrical direction of the erector ring is the Y axis, and an axis perpendicular to the Y axis and the Z axis is the X axis, the segment is supported by the erector arm so as to be movable in the direction of the Y axis. a gripping device for releasably gripping the segment, the gripping device comprising a segment guide that is a first support mechanism for supporting the segment and that contacts the segment and guides the segment to the correct orientation. a first support mechanism disposed on the segment arm so as to be movable in the Y-axis direction; a first drive mechanism for moving the first support mechanism; a second support mechanism that is movably supported and has an engaging portion that is releasably engaged with the segment; and the second support mechanism is moved to engage the segment guide and the second support mechanism.
and a second drive mechanism for releasably gripping the segment.

(Effects of the Invention) The segment erector of the present invention engages the engagement portion of the second support mechanism with the engagement portion of the lining segment, and then moves the second support mechanism toward the segment guide. Since the segment can be held in a sandwiched state between the segment guide and the second support mechanism, the engagement part of the second support mechanism can be reliably engaged with the engagement part of the segment, and the segment It is possible to grip the segment reliably and maintain the segment in the posture defined by the segment guide.

(Example) Hereinafter, an example of the present invention shown in the drawings will be described.

Segment erector 10 shown in FIGS. 1 to 3
is arranged within the shield body 14 of the shield tunnel excavator 12. An annular lining 16 made of a plurality of existing segments formed using the segment erector 10 is provided at the rear of the shield body 14.

The erector 10 includes an erector ring 18 disposed within the shield body 14 so as to be rotatable about its axis, and a pair of erector rings arranged at intervals in the circumferential direction of the erector ring and extending rearward from the erector ring. It includes an erector arm 20 and a gripping device 24 supported by the erector arm so as to be movable in the diametrical direction of the erector ring 18 and for releasably gripping the lining segment 22.

The erector ring 18 is supported by the shield body 14 by a plurality of guide rollers 26 provided on the inner periphery of the shield body 14, and is rotated around the axis of the shield body 14 by a rotation mechanism 28.

The gripping device 24 includes a first support mechanism 30 for supporting the segment 22 and a first drive mechanism 32 for linearly moving the first support mechanism.
The first support mechanism 20 has an axis extending in the axial direction of the shield body 14 as a Z axis, an axis perpendicular to the Z axis and extending in the diametrical direction of the erector ring 18 as a Y axis, and the Y axis and the Z axis. The axis perpendicular to
When used as a shaft, it is provided on the erector arm 20 so as to be movable in the direction of the Y-axis, and also has a segment guide 34 for contacting the segment 22 and guiding it to the correct posture. The first drive mechanism 32 consists of a plurality of jacks attached to the erector arm 20 to linearly move the first support mechanism 30 in the direction of the Y-axis.

The first support mechanism 30 is also shown in FIGS.
As shown in the figure, the segment guide 34 is
A first attitude control means 36 that corrects the attitude of the segment guide 34 with respect to the inner peripheral surface of the shield body 14 by rotating it by a predetermined angle around an axis that is substantially parallel to the axis.
and a second attitude control means 38 that rotates the segment guide 34 by a predetermined angle around an axis substantially parallel to the Y-axis to correct the attitude of the segment guide 34 with respect to the inner circumferential surface of the shield body 14; a third attitude control means 40 that corrects the attitude of the segment guide 34 with respect to the inner circumferential surface of the shield body 14 by rotating it by a predetermined angle about a third axis substantially parallel to the Z axis; a first position control means 42 that moves the segment guide 34 a predetermined distance in the direction of the Y-axis to correct the position of the segment guide 34 in the Z-axis direction; and second position control means 44 for correcting the position of the segment guide 34.

The first position control means 42 is arranged between the first and second attitude control means 36 and 38, and the second position control means 44 is arranged between the second and third attitude control means 3.
It is located between 8 and 40.

As shown in FIG. 1, FIG. 2, and FIG. two first bases 48 fixed to the lower ends of the sliding shafts; and a second base 52 pivotally connected to both first bases 48 by a first shaft 50 extending in the direction of the X-axis. , and a first control jack 54 for rotating the second base by a predetermined angle around the first axis 50.

The first base 48 is connected to and supported by the erector arm 20 by the first drive mechanism 32. The first control jack 54 consists of a pair of jacks separated in the Z-axis direction. The cylinder portion of each jack is connected to the first base 4 by a pin 56.
A movable part connected to the cylinder part 8 and moved relative to the cylinder part is connected to the second base 52 by a pin 58. The second base 52 has a recess 60 that opens downward. The first position control means 42 is connected to the second base 52 .

The first attitude control means 36 rotates the second base 52 by a predetermined angle around the first axis 50 using the first control jack 54 . As a result, the second base 52 is rotated by a predetermined angle with respect to the first base 48, so that the segment guide 34 is rotated with respect to the first shaft 5.
The shield main body 14 is rotated by a predetermined angle about the zero axis, and its attitude with respect to the inner circumferential surface of the shield main body 14 is corrected.

The first position control means 42 is arranged in a recess 60 of the second base 52, as shown in FIGS. a rod 62, a movable base 64 movably supported by both rods, and a movable base 64 that is movably supported by both rods.
2, and a first correction jack 66 consisting of a pair of jacks for moving along 2.

The rod 62 is connected to the second position of the first posture control means 36.
It is supported by a base 52 of. The first correction jack 66 is connected to the second base 52 and the moving table 64 by pins 68, 70, as shown in FIGS. 5 and 7. A second attitude control means 38 is connected to the movable table 64 .

The first position control means 42 moves the movable table 64 a predetermined distance in the Z-axis direction with respect to the second base 52 using the first correction jack 66 . As a result, the segment guide 34 is moved a predetermined distance in the Z-axis direction with respect to the second base 52, and its position in the Z-axis direction with respect to the shield body 14 is corrected.

As shown in FIGS. 3 to 6, the second posture control means 38 includes a second shaft 72 extending in the Y-axis direction.
a rotary table 74 pivotally connected to the movable table 64 of the first position control means 42 and a second control jack 76 for rotating the rotary table about a second axis 72;
Equipped with.

The rotary table 74 is rotatably supported by the movable table 64 by a bearing 78, as shown in FIGS. 5 and 6. The second control jack 76 is connected to the moving table 64 and the rotating table 74, as shown in FIG. A second position control means 44 is connected to the rotary table 74 .

The second attitude control means 38 rotates the rotary table 74 by a predetermined angle with respect to the movable table 64 using the second control jack 76 . Thereby, the segment guide 34 is rotated by a predetermined angle around the second axis 72, and its attitude with respect to the inner circumferential surface of the shield body 14 is corrected.

The second position control means 44 is shown in FIGS.
As shown in the figure, a pair of rods 82 are disposed on the bearing portion 80 of the rotary table 74 of the second attitude control means 38 so as to be slidable in the Y-axis direction, and are connected to the rods by a pin 84, a correction arm 86 that extends in the axial direction; and a second correction arm that moves the correction arm in parallel in the Y-axis direction with respect to the second attitude control means 38.
A correction jack 88 is provided. Rod 82 is
They are arranged at intervals in the direction of the X-axis.
The third attitude control means 40 is connected to the correction arm 86.

The second position control means 44 uses a second correction jack 88 to move the correction arm 86 a predetermined distance in the Y-axis direction relative to the rotary table 74 . This results in
The segment guide 34 is connected to the second attitude control means 3
8 in the Y-axis direction, and the position in the Y-axis direction with respect to the shield body 14 is corrected.

As shown in FIG.
6 and a third axis 90 for rotating the segment guide 34 about the third axis 90 .
control jack 92. The third control jack 92 consists of a pair of jacks spaced apart in the X-axis direction. Each jack is connected to the end of correction arm 86 and segment guide 34.

The third attitude control means 40 rotates the segment guide 34 by a predetermined angle around the third axis 90 by operating the third control jack 92 . Thereby, the segment guide 34 is rotated by a predetermined angle around the Z-axis, and its attitude with respect to the inner circumferential surface of the shield body 14 is controlled.

Segment guide 34 includes a frame 94 that contacts segment 22 and a connection 96 that connects the frame to modification arm 86, as shown in FIGS. The frame 94 has a recess 98 that opens downward, and the lower surface thereof has a recess 98 that opens downward.
As shown in FIG. 2, it is formed into an arcuate surface in order to contact the segment 22 and guide it into the correct posture.

The gripping device 24 also includes a second support mechanism 100 that is engaged with the segment guide 34 and a second support mechanism 100 that is engaged with the segment guide 34 in the Y-axis direction with respect to the segment guide 34, as shown in FIGS. A second drive mechanism 102 for linear movement is provided.

The second support mechanism 100 includes a base member 104
A pressing member 106 that presses the segment 22 against the base member 104, a jack 108 that linearly moves the pressing member, and a hollow member 110 that extends upward from the base member 104 in the Y-axis direction.

The base member 104 has a substantially inverted L-shape including a base 112 fixed to the lower end of the hollow member 110 and a receiving portion 114 bent downward from the tip of the base to receive the segment 22. A hole 116 is bored in the lower end of the receiving part 114, passing through it in the Z-axis direction.

The pressing member 106 is supported by the base portion 112 so as to be movable in the Z-axis direction, and is moved toward and away from the receiving portion 114 by the jack 108. The pressing member 106 is adapted to grip the segment 22 as shown in FIG.
6 has a pin 118 that passes through a hole 120 provided in segment 22 and is received in hole 116 of receiver 114 when pushed toward receiver 114 by jack 108 .

Jack 108 is attached to base 112. The hollow member 110 is connected to the segment guide 3
The guide portion 122 extends upward from the frame 94 of No. 4 so as to be vertically movable.

The second drive mechanism 102 is disposed within the hollow member 110 and also includes a lid 124 fixed to the upper end of the guide portion 122 of the segment guide 34;
It is connected to the bottom of the hollow member 110.

When the segment erector 10 is at rest, the first support mechanism 30 is raised toward the erector arm 20 by the first drive mechanism 32. Further, the second support mechanism 100 has the following functions by the second drive mechanism 102:
The lower ends of the base member 104 and the pressing member 106 are pulled up into the recess 98 of the segment guide 34 so as to protrude downward from the recess 98 .
In this state, the segment 22 is conveyed below the erector 10.

When the segment erector 10 operates, the gripping device 2
4, the first drive mechanism 32 is first extended and the first
The support mechanism 30 is lowered. Thereby, the segment guide 34 is brought closer to the segment 22.

The gripping device 24 then moves the second drive mechanism 10
2, the second support mechanism 100 is lowered until the hole 116 and pin 118 of the second support mechanism 100 face the hole 120 of the segment 22, and then the jack 108 moves the pressing member 106 against the base member 104. advance. This causes the pin 118 to be inserted into the hole 120 of the segment 22 and engaged with the segment 22.
is held by the receiving portion 114 and the pressing member 106. In this state, segment 22 is separated from segment guide 34.

When gripping the segment 22 by the second support mechanism 100, the segment guide 34 or The relative positional relationship between the segments 22 is corrected. This correction work is performed by moving the segment 22 relative to the erector 10, or by using the first, second and third attitude control means 36, 38, 40 and the first and second position control means 42, 44. Segment guide 3
4 relative to segment 22.

Next, the gripping device 24 is attached to the second support mechanism 100
The segment 22 is driven by the second drive mechanism 102.
and the segment guide 34 until they come into contact with each other. Thereby, the segment 22 is gripped by the segment guide 34 and the second support mechanism 100.

Thereafter, the erector 10 operates the rotation mechanism 28 to rotate the erect ring 18 by a predetermined angle, operates the first drive mechanism 32 to place the segments 22 at a predetermined position, and then returns to the initial state.

When arranging the segments 22 at predetermined positions on the lining 16, the segment guides 34 are moved by the first, second and third attitude control means 36, 38, 40 and the first and second position control means 42, 44. The attitude and Y of the shield body 14 with respect to the inner peripheral surface are determined by
The position in the axis and Z-axis directions is corrected. Thereby, the attitude and position of the segment 22 with respect to the lining 16 is corrected, so that the segment 22 is placed in the correct attitude and position. Further, when the segments 22 are pressed against the lining 16, an impact is applied to the gripping device 24 in the Y-axis direction, but this impact is absorbed by the second correction jack 88 whose force is weaker than that of the first drive mechanism 32. .

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a shield tunnel excavator equipped with a segment erector of the present invention;
Fig. 2 is a right side view of Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 2, Fig. 4 is a sectional view taken along the - line in Fig. 2, and Fig. 5 is a sectional view taken along the - line in Fig. 2. The figure is a sectional view taken along the - line in Fig. 4, Fig. 6 is a sectional view taken along the - line in Fig. 5, and Fig. 7 is a sectional view taken along the - line in Fig. 6. FIG. 8 is a sectional view taken along the - line in FIG. 4. 12: Shield tunnel excavator, 14: Shield main body, 18: Erector ring, 20: Erector arm, 22: Segment, 24: Gripping device, 3
0,100: first and second support mechanisms, 32,
102: first and second drive mechanism, 34: segment guide, 36, 38, 40: attitude control means, 42, 44: position control means, 46: sliding shaft,
48, 52: first and second bases, 50, 7
2,90...first, second and third axes, 54,7
6, 92: Control jack, 62: Rod, 64:
Moving table, 66, 88: Correction jack, 74: Rotating table, 82: Rod, 94: Frame, 98: Recess, 104: Base member, 106: Pressing member, 1
08: Jacket, 110: Hollow member, 114: Receiver, 116, 120: Hole, 118: Pin, 12
2: Guide section.

Claims (1)

[Claims] 1. A segment erector disposed at the rear within a shield body of a shield tunnel excavator, comprising:
an erector ring rotatably disposed within the shield body around its axis; a plurality of erector arms disposed at intervals in the circumferential direction of the erector ring and extending rearward from the erector ring; The axis extending in the direction of the axis of the shield body is the Z axis, and one axis perpendicular to the Z axis and extending in the diametrical direction of the erector ring is the Y axis.
a gripping device supported by the erector arm so as to be movable in the direction of the Y-axis and releasably grips the lining segment, when an axis perpendicular to the axis and the Z-axis is the X-axis; The device has a segment guide that is a first support mechanism for supporting the segment and that contacts the segment and guides it to a correct posture, and the device has a segment guide that is a first support mechanism for supporting the segment and for guiding the segment to a correct posture, and a segment guide that is configured to move in the direction of the Y axis on the erector arm. a first drive mechanism that moves the first support mechanism; and a first drive mechanism that is movably supported by the segment guide in the Y-axis direction and releasably engaged with the segment. a second support mechanism having an engaging portion that is engaged; and a second drive mechanism that moves the second support mechanism to cause the segment guide and the second support mechanism to releasably grip the segment. A segment erector comprising: 2. The first support mechanism includes means for correcting the attitude of the segment guide with respect to the inner circumferential surface of the shield main body, and means for correcting the position of the segment guide in the Z-axis direction and the Y-axis direction. A segment erector according to claim 1, comprising: a segment erector according to claim 1; 3. The attitude correction means includes a first attitude control means for correcting the attitude of the segment guide by rotating the segment guide around an axis substantially parallel to the X-axis; a second attitude control means for correcting the attitude of the segment guide by rotating it about an axis substantially parallel to the Z axis;
a third axis for correcting the orientation of the segment guide by rotating it about a third axis substantially parallel to the axis;
and attitude control means, the position correction means comprising:
a first position control means for moving the segment guide in the Z-axis direction to correct the position of the segment guide in the Z-axis direction; and moving the segment guide in the Y-axis direction to adjust the position of the segment guide in the Z-axis direction. 3. The segment erector according to claim 2, further comprising second position control means for correcting the position of the guide. 4. The first posture control means includes a sliding shaft disposed on the erector arm so as to be slidable in the Y-axis direction, a first base provided on the sliding shaft, and extending in the X-axis direction. a second base pivotally connected to the first base by a first axis; and a first control jack for rotating the second base about the first axis; 4. The segment erector according to claim 3, wherein the first position control means is supported by the second base. 5. The first position control means includes a rod supported by the first posture control means and extending in the Z-axis direction, a movable table movably supported by the rod, and a movable table movably supported by the rod. 5. The segment erector according to claim 3 or 4, further comprising a first correction jack for moving along the segment erector, and wherein the second attitude control means is supported by the moving table. 6 The second attitude control means includes a rotary table pivotally connected to the first position control means by a second axis extending in the Y-axis direction, and a rotary table that rotates the rotary table about the second axis. 6. The segment erector according to claim 3, further comprising a second control jack for controlling the segment erector, and wherein the second position control means is supported by the rotary table. 7. The second position control means includes a pair of rods disposed on the second attitude control means so as to be slidable in the Y-axis direction, and a correction arm connected to the rods and extending in the X-axis direction. a second correction jack for moving the correction arm in the Y-axis direction relative to the second attitude control means, the third attitude control means being supported by the correction arm;
A segment erector according to claim 3 or 6. 8 The third attitude control means includes a third axis extending in the Z-axis direction and pivotally connecting the segment guide to the second position control means, and a third axis extending in the Z-axis direction and pivoting the segment guide around the third axis. and a third control jack for rotating the segment erector according to claim 3 or 7. 9 The segment guide includes a frame having a recess with a downward opening, and a hollow guide that extends from the frame in the Y-axis direction, movably receives a part of the second support mechanism, and guides the movement of the frame. The second support mechanism includes a hollow member movably housed in the guide part, and a base member connected to the hollow member, a part of which is housed in the recess; a base member having a receiving portion for receiving the segment; and a pressing member for pressing the segment against the receiving portion, a portion of which is accommodated in the recess and movably supported by the base portion. A member, and a jack for moving the pressing member toward and away from the receiving portion, and the engaging portion is a pin provided on the pressing member. The segment erector according to any one of clauses 8 to 8.