JPH0967999A - Segment erector device for shield machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and efficiently move a segment to the assembling position by turning an erector head around a perpendicular turning axis, and by moving a gripping segment being supported thereby in the backward and forward direction of the tunnel within the horizontal surface. SOLUTION: When a segment gripping means 13 of an erector head 15 is moved to a segment feeding position, a slide jack 4 is expanded for turning a parallel link 5 backward. While the erector head 15 is turned within the horizontal surface, it is fitted to a second bracket 9 by the expansion/contraction of the yawing jack in accordance with the amount of expansion of a correction jack 16, and also the gripping bracket 11 to which the segment gripping means 13 has been fixed is turned in the opposite direction to the erector head 15. Thus, the yawing directional turning or the horizontal turning of the segment gripping means 13 caused by the turning of the erector head 15 is automatically corrected. As the expansion of the slide jack 4, the corrective jack 16 is also expanded, and the yawing jack is contracted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment erector device for a shield machine for assembling segments along an inner wall of a tunnel.

[0002]

2. Description of the Related Art As a segment erector device for a shield machine, for example, the one described in Japanese Patent Application No. 6-264429, Japanese Utility Model Application Laid-Open No. 4-138497, and Japanese Unexamined Patent Application Publication No. Hei 5 (1999) -58497.
There is one disclosed in JP-A-18195.

As shown in FIG. 9, the segment erector device described in Japanese Patent Application No. 6-264429 uses a pair of four-bar parallel link mechanisms operating in a vertical plane to move the segment from the segment supply position to the segment assembly position. To move to. The shield main body 40 of the shield machine is divided into a front body 41 and a rear body 42. The front body 41 includes a cutter head 43 that rotates at a front end and a shield jack 45 that extends by receiving a reaction force from an existing segment 44. Dig in. A swivel support member 46 is rotatably supported inside the rear body 42 with a shaft center of the shield body 40 as a swivel center, and the swivel support member 46 includes a segment erector device 47.
Is installed. The segment elector device 47 has two
It has a pair of parallel links 48 and 49, and an erector head 50 is attached to the tip of the parallel link 49.

Next, as shown in FIG. 10, the segment elector device disclosed in Japanese Utility Model Laid-Open No. 4-138497 discloses a central portion of a radial support frame 61 disposed in the rear body of the shield body 60. In addition, the segment elector device 62 is rotatably arranged via the swiveling drum 63. The turning drum 63 has a segment gripping mechanism 6 at the top.
The gate type frame 65 equipped with 4 can be moved in the radial direction,
In addition, it is swingably supported in the front-rear direction. A jack 67 is interposed between the swiveling drum 63 and the bracket 66 of the gate frame 65, and the segment gripping mechanism 64 is configured to swing in the front-rear direction together with the gate frame 65 when the jack 67 expands and contracts. ing.

Further, as shown in FIG. 11, the segment elector device disclosed in Japanese Unexamined Patent Publication No. 5-18195 discloses a swivel ring 71 mounted swivel in a shield body 70, and a plurality of swivel rings mounted on the swivel ring 71. The segment elevating / sliding device 72 is provided, and the segment elevating / sliding device 72 is configured to extend into the existing segment 73 and hold and lift the new segment piece 74 there.

[0006]

However, the segment elector device described in Japanese Patent Application No. 6-264429 has the following problems. (1) Since the grasped segment moves up and down by the parallel link 48 when moving from the supply position to the assembly position, raise the grasping segment to a high position so as not to interfere with the existing segment when the segment descends. I have to go. Therefore, it is necessary to increase the stroke of the lifting jack that moves the segment up and down. (2) Since the two sets of parallel links 48 and 49 are used, the structure of the segment elector device becomes complicated. (3) As shown in FIG. 9, it is good in the case of a shield machine with a mud pipe 51 and a mud pipe 52, but in the case of a shield machine with a screw conveyor for transporting excavated sand, Due to the large diameter, it is difficult to secure a design space for the screw conveyor with this mechanism.

Further, since the segment erector device disclosed in Japanese Utility Model Laid-Open No. 4-138497 has a constant swing angle with respect to the segment supply position, it is necessary to construct a tunnel that continuously changes like an inclined shaft-horizontal shaft-slant shaft. Also, since the segments are diagonally placed and gripped even during horizontal excavation, there is a problem such as poor workability in gripping.

Further, the segment erector device disclosed in Japanese Patent Laid-Open No. 5-18195 has a segment elevating / lowering unit.
Since the slide device 72 straddles the segment assembly position and the existing segment, it becomes an obstacle during segment assembly,
When turning, there is a problem such as danger to the operator, and since the segment is screw-fed, if the screw feed pitch is reduced to facilitate fine adjustment in the axial direction during segment assembly, the segment moves at high speed. Since the handle has to be rotated at high speed, there is a problem that workability is poor.

In view of the above-mentioned conventional examples, in the case of the swing type segment erector device, the position and posture of the segment change during and after the movement of the segment, so that the interference with the existing segment and the workability of gripping the segment are improved. bad. In contrast,
In the segment erector device of the linear movement system, the posture of the segment is constant, but the structure is large and complicated, the segment assembly workability is poor, and the cost is high. The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a segment erector device that can easily and efficiently move a segment from a supply position to an assembly position while maintaining a constant posture. There is.

[0010]

In order to achieve the above object, a segment erector device for a shield machine according to the present invention is installed on a swivel support member 1 rotatably mounted on a rear portion of a shield body of the shield machine. In a segment erector device of a shield machine for assembling a gripping segment 30 along an inner wall of a tunnel excavated by the shield machine, the segment machine is pivoted in a front-rear direction around a vertical pivot axis installed on the pivot support member 1. At the same time, it is composed of erector heads 15 and 37 having segment gripping means 13 that moves in the front-rear direction of the tunnel by turning around the turning axis 3a.

The erector heads 15 and 37 are provided with segment yawing angle correcting means 10, 16, 18, 19, 33, 34, 35 and 3 for maintaining the gripping segment 30 gripped by the segment gripping means 13 in a predetermined yawing direction.
6 may be installed.

A segment erector device for a shield machine according to claim 2, wherein the segment yawing angle correction means 10, 16, 18, 19, 33, 34, 35,
When the erector heads 15 and 37 turn in the front-rear direction, the reference numeral 36 indicates a direction opposite to the turning.
By rotating the segment gripping means 13 in the front-back direction with respect to 7, the gripping segment 30 can be maintained in a predetermined yawing direction.

In the segment erector device for a shield machine according to claim 3, said segment yawing angle correcting means 10, 16, 18, 19 are erector heads 1.
In order to maintain the gripping segment 30 gripped by the segment gripping means 13 in a predetermined yawing direction when the 5, 5 and 37 pivot in the front-back direction, the erector heads 15, 37.
On the other hand, the yawing jack 10 for turning the segment gripping means 13 in the front-back direction may be installed.

In the segment erector device for a shield machine according to claim 4, the segment yawing angle correction means 10, 16, 18, 19 are erector heads 1.
It is also possible to provide a correction jack 16 that expands and contracts following the sliding jack 4 that turns the 5, 5 in the front-rear direction, and connect the correction jack 16 and the yawing jack 10 between the jack chambers.

In a segment erector device for a shield machine according to claim 2, said segment yawing angle correcting means 33, 34, 35, 36 are erector heads 1.
By interposing the parallel link 33 between the 5, 5 and 37, the gripping segment 30 gripped by the segment gripping means 13 when the erector heads 15, 37 pivot in the front-back direction.
Can be maintained in a predetermined yawing direction.

In the segment elector device for a shield machine according to a second aspect, the segment yawing angle copying means 21, 23, 25, 22, 24, 26 of the gripping segment 30 with respect to the existing segment 30a may be provided.

A segment erector device for a shield machine according to claim 2, wherein said erector heads 15 and 3 are provided.
The segment holding means 13 with respect to the turning angle of 7 in the front-back direction
Segment yawing angle correcting means 10, 16, 18, 19, 21, 23, 2 of the gripping segment 30 gripped by
5, 22, 24 and 26 may be provided.

A segment erector device for a shield machine according to claim 7, wherein the segment yawing angle correcting means 10, 16, 18, 19, 21, 21, according to claim 8.
3, 25, 22, 24, 26 may be provided.

In the segment elector device for a shield machine according to claim 1, the tunnel lateral direction position correcting means 12 of the gripping segment 30 may be provided.

In the segment erector device of the shield machine according to the second aspect, the tunnel lateral direction position correcting means 12 of the grip segment 30 may be provided.

In the segment elector device for a shield machine according to claim 11, segment yawing angle copying means 21,23,25,22,24,26 and segment yawing angle correcting means 10,16,18,19,2.
1, 23, 25, 22, 24, and 26 may be provided.

[0022]

According to the above construction, the erector heads 15 and 37 of the shield machine excavate in the front-rear direction around the vertical swivel shaft 3a installed on the swivel support member 1 by a predetermined driving means. By the turning of the erector heads 15 and 37,
The segment gripping means 13 mounted on the erector heads 15 and 37 moves in the front-rear direction of the tunnel. Therefore, when the segment carried into the segment supply position is moved to the segment assembly position in front of it, the erector heads 15 and 37 pivot in the front-back direction around the vertical pivot axis 3a, so that the gripping segment 30 moves up and down the tunnel. Since there is no movement in the horizontal plane in the direction, the existing segment 3
No interference with 0a etc.

The segment yawing angle correction means 10, 16, 18, 19, 3 are attached to the erector heads 15, 37.
If 3, 34, 35, 36 are installed, the erector head 1
Even if 5, 37 pivot in the front-rear direction, the gripping segment 30 does not pivot in the front-rear direction and is maintained in the predetermined yawing direction.

The segment yawing angle correction means 1
0, 16, 18, 19, 33, 34, 35, 36 are segment holding means 1 for the erector heads 15, 37.
By pivoting 3 in the front-back direction and in the opposite direction, the gripping segment 30 is maintained in a predetermined yawing direction.

The segment yawing angle correction means 1
Nos. 0, 16, 18, and 19 are provided for the erector heads 15, 3 when the erector heads 15, 37 turn in the front-rear direction.
When the segment gripping means 13 is swung back and forth by the yawing jack 10 in the opposite direction depending on the turning angle of 7, the gripping segment 30 is maintained in the predetermined yawing direction.

The segment yawing angle correction means 1
0, 16, 18, and 19 are provided with a correction jack 16 that expands and contracts following the sliding jack 4 that turns the erector heads 15 and 37, and the correction jacks 16 and the yawing jacks 10 are connected to each other. Then, only the angle at which the erector heads 15 and 37 turn in the front-rear direction,
Since the segment gripping means 13 pivots in the front-back direction in the opposite direction, the gripping segment 30 is maintained in a predetermined yawing direction.

The segment yawing angle correction means 3
3, 34, 35, 36 interpose a parallel link 33 on the erector heads 15, 37, so that when the erector heads 15, 37 pivot in the front-back direction, the gripping segment 30 gripped by the segment gripping means 13 is predetermined. Maintained in the yawing direction.

When the gripping segment 30 gripped by the segment gripping means 13 is forcibly pressed against the existing segment 30a, the segment yawing angle copying means 21,
The gripping segment 30 gripped by the segment gripping means 13 follows 23, 25, 22, 24, and 26 in the yawing direction of the existing segment 30a.

The yawing direction of the gripping segment 30 gripped by the segment gripping means 13 with respect to the turning angles of the erector heads 15 and 37 in the front-rear direction is the segment yawing angle correcting means 10, 16, 18, 19, 21, 21.
3,25,22,24,26 are corrected in a predetermined yawing direction.

Segment yawing angle copying means 21, 2
3, 25, 22, 24, 26 and segment yawing angle correction means 10, 16, 18, 19, 21, 23, 25,
By installing 22, 24 and 26, the gripping segment 30 gripped by the segment gripping means 13 can be made to follow the yawing direction of the existing segment 30a or can be corrected to a predetermined yawing direction.

When the tunnel lateral position correcting means 12 of the grip segment 30 is provided, the erector head 15,
Even if the position of the grip segment 30 shifts in the tunnel left-right direction, it can be corrected to a predetermined position by turning 37 around the vertical turning axis installed on the turning support member 1.

The segment yawing angle correction means 10, 16, 18, 19, 3 are attached to the erector heads 15, 37.
By installing 3, 34, 35, 36 and the tunnel left-right direction position correcting means 12 of the gripping segment 30, the gripping segment 30 does not rotate in the front-rear direction even if the erector heads 15, 37 rotate in the front-rear direction. While maintaining the predetermined yawing direction, the position of the grip segment 30 in the tunnel left-right direction can be corrected to a predetermined position.

The segment yawing angle correction means 10, 16, 18, 19, 3 are attached to the erector heads 15, 37.
3, 34, 35, 36, tunnel left-right direction position correcting means 12 of the gripping segment 30, and segment yawing angle copying means (21, 23, 25, 22, 24, 26)
And segment yawing angle correction means (10, 16, 1
8, 19, 21, 23, 25, 22, 24, 26), the gripping segment 30 does not rotate in the front-rear direction even if the erector heads 15, 37 rotate in the front-rear direction, and a predetermined yawing motion is achieved. Direction, the position of the grip segment 30 in the tunnel left-right direction can be corrected to a predetermined position, and the grip segment 30 gripped by the segment grip means 13 can be made to follow the yawing direction of the existing segment 30a. , It is also possible to correct in a predetermined yawing direction.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a segment elector device according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a segment elector device according to a first embodiment of the present invention, and FIG. 2 is a Z view of FIG.

A fixed bracket 2 projecting rearward in parallel with the axis of the rear body is fixed to a swivel support member 1 rotatably provided in the rear body of the shield body, and a bush is attached to the tip of the fixed bracket 2. A swivel shaft 3a that can swivel is mounted via 2a (or a rolling bearing), and a swivel bracket 3 that swivels in the front-rear direction of the tunnel is fixed to this swivel shaft 3a. A sliding jack 4 is provided between the fixed bracket 2 and the swivel bracket 3, and the swivel bracket 4 allows the swivel bracket 3 to swivel with respect to the fixed bracket 2 in the front-rear direction of the tunnel.

A first bracket 6 is connected to the swivel bracket 3 via a pair of plate-shaped parallel links 5 which are parallel to each other, and the first bracket 6 is provided between the swivel bracket 3 and the parallel link 5. The lifting jack 7 is provided so that it can be lifted and lowered. A second bracket 9 is attached to the first bracket 6 via a pin 8, and the second bracket 9 is supported by a yawing jack 10 provided between the parallel link 5 and the second bracket 9 so that the pin 8 is a fulcrum. Is freely rotatable.

On the lower surface of the second bracket 9, a gripping bracket 11 which is linearly movable by a bearing is mounted. This gripping bracket 11 is provided by a fine turning jack 12 provided between the second bracket 9 and the gripping bracket 11. You can move to the left and right of the tunnel. As a bearing for mounting the gripping bracket 11 on the lower surface of the second bracket 9, the gripping bracket 11 may be slidably mounted in a straight groove provided on the second bracket 9 via a steel ball (not shown), In addition, a guide rail (not shown) may be attached to the linear groove provided in the second bracket 9, and the grip bracket 11 may slide along the guide rail.

The grip bracket 11 is provided with a segment grip means 13 and a support jack 14. The segment gripping means 13 are a pair of brackets facing each other in the front-rear direction of the tunnel and having pin holes formed therein, and the support jacks 14 are installed on both sides of the segment gripping means 13 to extend the support jacks 14. This prevents the gripping segment 30 gripped by the segment gripping means 13 from swinging around the pin inserted into the pin hole. The erector head 15 is composed of parts from the turning bracket 3 to the segment holding means 13 and its accessories.

Further, between the fixed bracket 2 and the swing bracket 3, a sliding jack 4 is provided below the sliding jack 4.
A correction jack 16 is provided in parallel with the correction jack 1
Reference numeral 6 expands and contracts following the expansion and contraction operation of the sliding jack 4. Further, the swivel support member 1 is provided with a pump unit 17 in which a hydraulic pump for supplying pressure oil to each hydraulic jack and an oil tank are integrated together at a position substantially facing the fixed bracket 2.

Correction jack 16 and yawing jack 1
As shown in FIG. 3, the head chamber 0 and the bottom chamber 0 are connected to each other by conduits 18 and 19 such as hoses.
Although the correction jack 16 is installed below the sliding jack 4, it is shown next to the sliding jack 4 in FIG. 3 for easy identification.

Next, the operation of the segment elector device according to the first embodiment will be described. When the segment gripping means 13 of the erector head 15 is moved to the segment supply position, the sliding jack 4 is extended and the parallel link 5 is moved.
Turn backwards. The erector head 15 turns in a horizontal plane, but as shown in FIG.
The yawing jack 10 expands and contracts according to the amount of expansion and contraction of the correction jack 16 communicating with the pipes 18 and 19 (change in the volume of oil in the jack), so that the yawing jack 10 is attached to the second bracket 9 and the segment gripping means 13 is provided. The fixed gripping bracket 11 of is swiveled in the opposite direction to the erector head 15. Therefore, the turning of the segment gripping means 13 caused by the turning of the erector head 15 in the yawing direction, that is, the turning in the horizontal plane is automatically corrected. In this case, the correction jack 16 also expands as the sliding jack 4 expands, and the yawing jack 10 contracts. As a result, the second line with respect to the center line of the parallel link 5
The inclination angle θ2 of the bracket 9 becomes equal to the inclination angle θ1 of the link 5 with respect to the fixed bracket 2. Further, the shift of the grip bracket 11 in the left-right direction of the tunnel caused by the turning of the erector head 15 is corrected by the extension of the fine turning jack 12 shown in FIG.

Thereafter, the lifting jack 7 is extended to move the gripping bracket 11 mounted on the second bracket 9 downward. Since the grip bracket 11 is moved up and down through the parallel link 5, the grip bracket 11 always moves in parallel. The shift in the tunnel left-right direction caused by the lifting and lowering of the grip bracket 11 is corrected by the expansion and contraction of the fine turning jack 12 as described above. As a result, it is possible to move to the segment supply position while keeping the posture at the assembly position always constant. The segment gripping means 13 grips the segment 3
After gripping 0, the support jack 14 is pressed against the grip segment 30 to fix the grip segment 30, and the lifting jack 7 is contracted to raise the grip segment 30. Next, the sliding jack 4 is contracted to move the grip segment 30 to the assembled position.

While the grip segment 30 is gripped by the segment erector device, the sliding jack 4 is contracted to swivel the parallel link 5 forward of the tunnel, and then the swivel support member (swirl ring) 1 is swung to the segment assembly position. . Then, similarly to the movement of the gripping bracket 11 to the segment supply position described above, the jacks 7, 4, 12 for raising, lowering, sliding, and fine turning are driven to position the gripping segment 30 with respect to the existing segment 30a. After matching, assemble.

The displacement of the grip bracket 11 in the left-right direction of the tunnel caused by the turning of the segment erector device is
Although corrected by manually operating the fine turning jack 12, a means for detecting the relative position of the gripping bracket 11 with respect to the second bracket 9 and a control device for operating the fine turning jack 12 based on the detection result of this detecting means. By disposing, the shift of the grip bracket 11 in the left-right direction of the tunnel can be automatically corrected.

FIG. 4 is an explanatory view showing an example of a yawing angle copying means for aligning the gripping segment 30 gripped by the segment gripping means 13 with the direction of the existing segment 30a. As shown in the figure, branch lines 21 and 22 leading to the oil tank 20 are provided in the pipe lines 18 and 19 that connect the yawing jack 10 and the correction jack 16, respectively.
Relief valves 23 and 24 and check valves 25 and 26 are arranged in these branch pipe lines 21 and 22, respectively.

When the sliding jack 4 is driven to the extension side and the gripping segment 30 is pressed against the adjacent existing segment 30a, the oil on the bottom side 10b of the yawing jack 10 is discharged to the oil tank 20 via the relief valve 24, At the same time, a required amount of oil flows from the oil tank 20 into the head side 10a via the check valve 25. As a result, the inclination angle θ1 of the parallel link 5 with respect to the fixed bracket 2 and the inclination angle θ of the second bracket 9 with respect to the center line of the parallel link 5 are increased.
The relationship with 2 is θ1 ≠ θ2, and the gripping segment 30 can easily follow the existing segment 30a. At the segment supply position, the gripping segment 30
Even if the vehicle is placed at a position inclined with respect to the front-back direction of the tunnel, if the second bracket 9 or the grip bracket 11 of the erector head 15 is pressed against the grip segment 30 by using the yawing angle copying means, the segment The gripping bracket 11 to which the gripping means 13 is fixed can easily follow the direction of the gripping segment 30.

The displacement of the gripping segment 30 or the gripping bracket 11 due to the copying operation is caused by the gripping segment 30.
Can be corrected by driving the sliding jack 4 to the pushing side to the stroke end in an empty state as shown in FIG. As the sliding jack 4 is driven, the correction jack 16 also extends to the stroke end, and the yawing jack 10
The oil on the head side 10a is discharged to the oil tank 20 via the relief valve 23, and a required amount of oil flows from the oil tank 20 to the bottom side 10b via the check valve 26. As a result, the relationship between the inclination angle θ1 of the parallel link 5 with respect to the fixed bracket 2 and the inclination angle θ2 of the second bracket 9 with respect to the center line of the parallel link 5 is θ1 = θ2, and even if there is a deviation, it is easy to do so. A yawing correction can be made.

FIG. 6 is a schematic view showing a second embodiment of the present invention, in which a turning angle sensor 27 between the fixed bracket 2 and the turning bracket 9 is mounted on the second bracket 9. When the sliding jack 4 is driven and the erector head 15 turns, the yawing jack 10 is driven by the detection value of the turning angle sensor 27 accompanying this, and the direction of the second bracket 9 and the gripping bracket 11 is always in the tunnel left-right direction. Etc. can be kept in a constant direction. In the case of this embodiment,
No correction jack is required.

FIG. 7 is a front view of a segment elector device according to a third embodiment of the present invention, and FIG. 8 is a plan view of the device. A fixed bracket 31 is attached to the swivel support member 1 rotatably provided in the rear body of the shield body so as to project rearward in parallel with the axis of the rear body. Fixed bracket 3
The third bracket 32 is connected to the first bracket 32 via a pair of parallel links 5 in the form of plates which are parallel to each other.
Is movable up and down by a lifting jack 7 provided between the fixed bracket 31 and the parallel link 5. A pair of parallel links 33 that rotate in a horizontal plane are attached to the lower surface of the third bracket 32, and a fourth bracket 34 is attached below the parallel links 33. On the lower surface of the fourth bracket 34, the gripping bracket 11 provided with the segment gripping means 13 is linearly movably mounted as in the first embodiment. The lateral movement of the grip bracket 11 is performed by the operation of a fine swing jack (not shown). Also,
A sliding jack 35 is swingably attached to the third bracket 32 in a horizontal plane with a pin 36 as a fulcrum, and the sliding jack 35 is connected to a parallel link 33. The erector head 37 is composed of parts from the fixed bracket 31 to the segment holding means 13 and its accessories.

When the segment gripping means 13 of the erector head 37 is moved to the segment supply position, when the sliding jack 35 is driven to the extension side, the parallel link 33 pivots backward. Since the parallel link is used, the deviation of the gripping bracket 11 in the yawing direction due to the turning,
That is, no turning in the horizontal plane occurs. Further, the shift of the segment gripping means 13 in the tunnel left-right direction caused by the turning is corrected by the extension of the fine turning jack.

The lifting and lowering of the gripping bracket 11 is carried out by driving the lifting and lowering jack 7 as in the first embodiment, and the displacement in the tunnel left-right direction caused by this is corrected by the expansion and contraction of the fine turning jack. Therefore, the grip segment 30 can be moved to the segment supply position while keeping the posture at the assembly position always constant. Although not shown in FIG. 7, when the yawing profiling mechanism shown in FIG. 4 and the yawing deviation correcting mechanism shown in FIG. 5 are provided, a yawing jack is used to rotate between the fourth bracket 34 and the grip bracket 11. It is necessary to provide a moving bracket.

[0052]

As described above, according to the present invention, the following effects can be obtained. (1) Since the erector head revolves around a vertical revolving axis, the gripping segment gripped by the erector head moves in the front-rear direction of the tunnel in the horizontal plane and does not displace in the up-and-down direction of the tunnel, so it is carried into the supply position. When moving the gripped segment to the assembly position, there is no interference with the existing segment, etc., and safety is improved. (2) If segment yawing angle correction means is installed in the erector head, the gripping segment does not rotate even if the erector head turns, and the gripping segment is maintained in a predetermined yawing direction, which facilitates segment assembly work. be able to. (3) The segment yawing angle correction means has a simple structure in which the segment gripping means is automatically turned in the opposite direction by the correction jack and the yawing jack connecting the jack chambers in response to the turning of the erector head. Since the gripping segment gripped by the segment gripping means can be automatically maintained in the predetermined yawing direction, the workability at the time of segment assembly is improved. (4) If the segment yawing angle correcting means automatically turns the segment gripping means in the opposite direction via the parallel link to the erector head, the gripping segment gripped by the segment gripping means can be predetermined with a simpler configuration. Since it can be maintained in the yawing direction of, the workability at the time of segment assembly is improved. (5) According to the segment yawing angle copying means,
By simply pressing the gripping segment against the existing segment, the gripping segment can be moved in the yawing direction of the existing segment, and the yawing angle of the gripping segment can be changed as desired, thus reducing the segment assembly work time. You can (6) The yaw angle arbitrarily changed by the segment yawing angle copying means can be easily moved in a predetermined yawing direction by a simple operation such as forcibly pressing the gripping segment against the existing segment by the segment yawing angle correcting means. Since the correction can be made, it is possible to shorten the segment assembly work time when assembling a new grip segment. (7) If the segment yawing angle copying means and the segment yawing angle correcting means are provided together, the gripping segment gripped by the segment gripping means can be made to follow the yawing direction of the existing segment, or can be corrected in a predetermined yawing direction. Therefore, the segment assembly work time can be further shortened. (8) Even if the erector head turns in the front-back direction of the tunnel and the position of the gripping segment deviates in the left-right direction of the tunnel, the gripping segment can be easily corrected to a predetermined position by providing the tunnel left-right direction position correcting means. From this aspect, it is possible to shorten the segment assembly work time. (9) If the segment yawing angle correcting means, the tunnel left / right direction position correcting means for the gripping segment, the segment yawing angle copying means, and the segment yawing angle correcting means are installed in the erector head, even if the erector head turns. The grip segment is maintained in a predetermined yawing direction without turning, and the position of the grip segment in the tunnel left-right direction can be corrected to a predetermined position.
Further, since the gripping segment gripped by the segment gripping means can be made to follow the yawing direction of the existing segment or can be corrected to a predetermined yawing direction, the workability at the time of segment assembly is improved. The segment assembly work time can be further shortened. (10) Since the erector head is a one-link swing type, the work space at the time of assembling the segment can be wide, so that the workability is improved.

[Brief description of drawings]

FIG. 1 is a front view of a segment elector device according to a first embodiment of the present invention.

FIG. 2 is a Z view of FIG.

FIG. 3 is an explanatory diagram showing an example of a segment yawing angle correction means.

FIG. 4 is an explanatory diagram showing an example of segment yawing angle copying means.

FIG. 5 is an explanatory view showing a yawing angle correction means by a copying operation.

FIG. 6 is a schematic diagram of a segment elector device according to a second embodiment of the present invention.

FIG. 7 is a front view of a segment elector device according to a third embodiment of the present invention.

8 is a plan view of the segment elector device shown in FIG. 7. FIG.

FIG. 9 is a partial sectional view of a shield machine equipped with a conventional segment erector device.

FIG. 10 is an explanatory diagram showing another example of a conventional segment elector device.

FIG. 11 is an explanatory diagram showing another example of a conventional segment elector device.

[Explanation of symbols]

 1 Revolving Support Member 2 Fixed Bracket 3 Revolving Bracket (Electa Head) 3a Revolving Shaft 4,35 Sliding Jack 5,33 Parallel Link (Electa Head) 6 First Bracket (Electa Head) 7 Lifting Jack (Electa Head) 9 Second Bracket (Electa head) 10 Yawing jack (Electa head) 11 Gripping bracket (Electa head) 12 Fine turning jack (Electa head) 13 Segment gripping means (Electa head) 14 Support jack (Electa head) 15,37 Electa head 16 Correction jack 23,24 Relief valve 25,26 Check valve 27 Turning angle sensor 30 Gripping segment 30a Existing segment 31 Fixed bracket (Electa head) 32 Third bracket (Electa head) 34th Bracket (Elekta head)

Claims (12)

[Claims] 1. For assembling a gripping segment (30) along the inner wall of a tunnel excavated by a shield machine, which is installed on a pivot support member (1) pivotably mounted on the rear part of the shield body of the shield machine. In the segment erector device of the shield machine, the segment that turns in the front-back direction around the vertical turning axis 3a installed in the turning support member (1) and moves in the front-back direction of the tunnel by turning around the turning axis. Holding means (13)
A segment erector device for a shield machine, comprising an erector head (15, 37) having 2. A segment erector device for a shield machine according to claim 1, wherein said erector head (1)
5, 37) are segment yawing angle correction means (10, 16, 1) for maintaining the gripping segment (30) gripped by the segment gripping means (13) in a predetermined yawing direction.
8, 19, 33, 34, 35, 36), and a segment erector device for a shield machine. 3. The segment elector device for a shield machine according to claim 2, wherein the segment yawing angle correction means (10, 16, 18, 19, 33, 34, 3).
When the erector heads (15, 37) turn in the front-rear direction, the segment gripping means (13) for the erector heads (15, 37) are opposite to the turning direction.
A segment erector device for a shield machine, characterized in that the grip segment (30) is maintained in a predetermined yawing direction by rotating the shaft in the front-back direction. 4. The segment erector device for a shield machine according to claim 3, wherein the segment yawing angle correction means (10, 16, 18, 19) is used when the erector head (15, 37) turns in the front-rear direction. , The gripping segment (3 held by the segment gripping means (13)
0) in a predetermined yawing direction, the shield machine having a yawing jack (10) for swinging the segment gripping means (13) forward and backward with respect to the erector head (15, 37). Segment erector device. 5. The segment erector device for a shield machine according to claim 4, wherein the segment yawing angle correction means (10, 16, 18, 19) slides the erector head (15, 37) forward and backward. Providing a correction jack (16) that expands and contracts following the moving jack 4,
A segment erector device for a shield machine, wherein the correction jacks (16) and the yawing jacks (10) are connected between respective jack chambers. 6. The segment erector device for a shield machine according to claim 2, wherein the segment yawing angle correction means (33, 34, 35, 36) includes a parallel link (33) with the erector head (15, 37). By interposing, the gripping segment (30) gripped by the segment gripping means (13) is maintained in a predetermined yawing direction when the erector head (15, 37) pivots in the front-rear direction. Machine segment erector equipment. 7. The segment elector device for a shield machine according to claim 2, wherein the existing segment (30a)
Segment yawing angle copying means (21, 23, 25, 22, 24, 26) of the gripping segment (30) with respect to
A segment erector device for a shield machine, characterized by being provided with. 8. A segment erector device for a shield machine according to claim 2, wherein said erector head (1)
The segment yawing angle correction means (10, 16, 18, 1) of the gripping segment (30) gripped by the segment gripping means (13) with respect to the turning angle of the front-back direction of (5, 37).
9, 21, 23, 25, 22, 24, 26) are provided, and a segment erector device for a shield machine. 9. A segment elector device for a shield machine according to claim 7, wherein the segment yawing angle correction means (10, 16, 18, 19, 2) according to claim 8.
1, 23, 25, 22, 24, 26), and a segment erector device for a shield machine. 10. The segment erector device for a shield machine according to claim 1, wherein the grip segment (3
0) A tunnel erector device for a shield machine, comprising the tunnel lateral position correcting means (12). 11. The segment elector device for a shield machine according to claim 2, wherein the grip segment (3
0) A tunnel erector device for a shield machine, comprising the tunnel lateral position correcting means (12). 12. A segment erector device for a shield machine according to claim 11, wherein the segment yawing angle copying means (21, 23, 25, 22,
24, 26) and segment yawing angle correction means (1
0,16,18,19,21,23,25,22,2
4, 26) and a segment erector device for a shield machine.