JPH09303096A - Segment assembling device of shield excavating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the arrangement structure and control device of a support jack and surely regulate the rolling and pitching by the support jack. SOLUTION: A suspending beam 9 movable in the radial direction of a rotating frame is mounted on the rotating frame rotated in the circumferential direction and having a power unit, a sliding guide block 15 movable in the axial direction of the rotating frame is mounted on the suspending beam 9, and the sliding guide block 15 has a clamp device 21 for holding a segment 18 and a support jack for pressing the inner surface of the segment 18. A front support jack 47 is arranged in the lateral center part on the front side of the sliding guide block 15, and a rear left support jack 48 and a rear right support jack 49 are arranged on both lateral side parts on the rear side of the sliding guide block 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment assembling apparatus for a shield machine.

[0002]

2. Description of the Related Art FIGS. 9 and 10 are a schematic front view and a vertical sectional side view of a segment assembling apparatus for a shield machine, which is conventionally used, in which 1 is a rotating frame. The rotating frame 1 is supported by a plurality of supporting rollers 3 arranged in parallel with the rear cylinder 2 in a circular frame 2 ′ provided in the rear cylinder 2 of the shield machine. Further, the rotary frame 1 is rotated by a pinion 5 driven by a drive device 4 provided at a rear portion of the shield machine, not shown, through a gear 6 concentrically attached to the rear surface of the rotary frame 1, and the circumference of the circular frame 2 '. It can rotate in any direction.

Reference numeral 7 denotes left and right brackets attached to the rotary frame 1 and horizontally projecting to the rear of the rotary frame 1 (on the side of the anti-shielding machine). The power unit P is mounted on the bracket 7. A guide rod 8 is attached to the tip of the bracket 7 so as to be able to move up and down (advance and retreat), and a substantially arcuate suspension beam 9 extending in the circumferential direction of the rotating frame 1 is connected to the lower end of the guide rod 8. ing. A trunnion type fluid pressure cylinder 11 is vertically mounted on the bracket 7 via a pin 10 extending in the radial direction of the rotary frame 1, and a tip of a piston rod 11a is suspended via a pin 12 parallel to the pin 10. It is connected to the beam 9. Then, by the fluid pressure cylinder 11,
The suspension beam 9 can be moved up and down while being guided by the guide rod 8.

A bracket 13 is integrally attached to the lower surface of the suspension beam 9 so as to be positioned at the end of the shield machine shaft centerline in the front-rear direction. The bracket 13 has a pair of left and right extending in the shield machine shaft centerline direction. A guide rod 14 is attached, and a sliding guide block 15 is slidably fitted on the guide rod 14.

The tip of the fluid pressure cylinder 16 whose one end is connected to the bracket 13 of the suspension beam 9 is connected to the sliding guide block 1 through a pin 17 provided in parallel with the guide rod 8 and the like.
5, the sliding guide block 15 can be moved forward and backward along the guide rod 14.

The bottom surface of the sliding guide block 15 is shown in FIG.
As shown in FIG. 1 and FIG. 12, a clamp device 21 is provided, which is provided with slidable left and right gripping blocks 20, 20 for suspending a bolt-shaped gripping hardware 19 pre-mounted on a segment 18. ing.

On the contact surface of the grip blocks 20, 20,
A clamp hole 22 that opens in the radial direction of the rotary frame 1 is formed, and a concave clamp seat 23 (FIG. 12) connected to the clamp hole 22 is provided on the inner surface in the radial direction, so that the head of the gripping hardware 19 is fixed. It can be clamped. In FIG. 11 and FIG. 12, the clamp hole 22 is provided just in the front, rear, left and right of the sliding guide block 15.

On the front and rear side surfaces of the sliding guide block 15 in the sliding direction, four clamps whose upper ends are rotatably attached to the upper left and right ends of the sliding guide block 15 via pins 24 parallel to the guide rods 14 are provided. A jack 25 is provided, and the lower end of each clamp jack 25 is connected to the pin 2
The pin 26 is parallel to 4 and is mounted in an inverted V shape when viewed from the front as shown in FIG. When the clamp jack 25 is expanded and contracted, the grip blocks 20 and 20 are relatively moved toward and away from each other along the guide member 20a so that the grip hardware 19 can be clamped and unclamped.

In addition, front and rear clamp jacks 25, 2 provided on the left and right side portions of the sliding guide block 15.
As shown in FIG. 11, vertically extending support jacks 27a and 27b are provided at the intermediate position of 5, and the lower ends of the pistons of the support jacks 27a and 27b are matched with the inner surface shape of the segment 18. Pressure pad 28
Is installed. The support jacks 27a, 2
7b can be separately expanded and contracted. Therefore, by changing the pushing and pulling amount of the pressing pad 28 with respect to the segment 18 to the left and right, the inclination (rolling) in the circumferential direction with respect to the inner surface of the tunnel can be adjusted. ing. The inclination (pitching) of the segment 18 with respect to the axis of the rotating frame 1 is regulated by the length of the pressing pad 28 in the front-rear direction.

As shown in FIGS. 13 and 14, the segment 18 used in the segment assembling apparatus shown in FIGS. 9 to 12 has an arc shape with a narrow width dimension. A gripping piece 19 is provided, and a sealing material 29 such as rubber is attached to the end faces in the width direction and the circumferential direction. Further, a bolt is fastened to the inner surface of the segment 18 at a position close to the end faces in the width direction and the circumferential direction. Bolt hole 3
A bolt box hole 30 having 0a is provided, and the segment 18 shown in FIGS. 13 and 14 is generally called a flat plate segment.

The segment 18 is conveyed from the rear by a hoist (not shown) or the like and once placed on the bottom of the segment 18 which has already been assembled in a ring shape, and is rotated by the segment assembling apparatus shown in FIGS. 9 to 12. Frame 1
Is rotated to rotate the suspension beam 9, and the fluid pressure cylinder 16 is expanded / contracted to move the sliding guide block 15 back and forth, thereby gripping the center of rotation of the rotary frame 1 and the segment 18 to be gripped. The metal cylinder 19 and the sliding guide block 15 are positioned so that they are aligned with each other, and the clamp jacks 25 are simultaneously reduced so that the grip blocks 20, 20 are separated from each other, and the fluid pressure cylinder 11 is extended. By doing so, the outer surface (lower surface) of the gripping blocks 20, 20 is the segment 1
Adjust so that it is closer to the inner surface of 8.

Subsequently, the clamp jacks 25 are simultaneously extended and slid so that the grip blocks 20 and 20 come close to each other, and the facing surfaces of the grip blocks 20 and 20 are brought into contact with each other as shown by the solid line in FIG. Let As a result, the holding metal piece 19 of the segment 18 is held by the clamp holes 22 of the holding blocks 20, 20.

Subsequently, the support jacks 27a and 27b
Is extended to press the pressing pad 28 against the inner surface of the segment 18 to suppress the wobbling of the segment 18, and the fluid pressure cylinder 11 in FIGS. 9 and 10 is contracted to lift the segment 18. The hoisted segment 18 moves to a predetermined fastening position by the rotation of the rotary frame 1, the lifting and lowering of the hoisting beam 9 by the expansion and contraction of the fluid pressure cylinder 11, and the back and forth movement of the sliding guide block 15 by the expansion and contraction of the fluid pressure cylinder 16. The support jack 27
By a and 27b, the rolling is adjusted so that the posture matches the existing segment 18, and the existing segment 18 is bolted.

FIGS. 17 and 18 show what is called a core-type segment 31 whose inner surface is hollowed out in order to reduce the weight of the segment. In the case of the core type segment 31, three concave portions 32 are formed on the inner surface and flange portions 33 are projected to the periphery in the illustrated case, and between the concave portions 32 at both circumferential end portions and the circumferential end surface of the segment 31. Five bolt holes 34 for fastening bolts are provided through the respective flange portions 33, and between the three concave portions 32 and the front and rear (width direction) end faces of the segments 31 in the circumferential direction. Four bolt holes 35 are provided at intervals of two.

The core-type segment 31 is shown in FIGS.
In the segment assembling apparatus shown in FIG. 2, the flange portion 3
3 is an obstacle, and the segment 31 cannot be gripped and cannot be assembled. For this reason, FIGS.
The segment assembling device as shown in FIG. In the figure, the same parts as those shown in FIGS. 9 to 12 are designated by the same reference numerals, and detailed description thereof will be omitted.

Instead of the clamp device 21 having the gripping block 20 shown in FIGS. 9 to 12, as shown in FIGS. 19 and 20, a recess 32 formed in the inner surface of the core-shaped segment 31 is provided. A clamp device 37 having a grasping pin 36 adapted to be inserted at the lower end is attached to the lower side of the slide guide block 15.

The clamp device 37 is provided with shafts 38, 38 extending in the front-rear direction at positions having a required interval in the circumferential direction of the sliding guide block 15 (left-right direction in FIG. 19).
Rotating arms 39 and 40 extending downward are attached to 8, 38, and at the lower ends of the rotating arms 39 and 40, projecting and retracting in the front-rear direction into bolt holes 35 in front and rear of the recess 32 of the core-shaped segment 31. Four gripping pins 36 that can be fitted
Is provided.

Further, at the lower ends of the rotating arms 39, 40, there are provided pin driving jacks 41 for driving the four holding pins 36 in and out. Further, the sliding guide block 15 has two arm rotation jacks 42, which are configured to rotate the rotation arms 39, 40 to adjust the distance between the left and right gripping pins 36, 36 in FIG.
42 are provided.

Further, the flange portion 33 of the segment 31 is provided on the left and right sides of the sliding guide block 15 in FIG.
Support jacks 27a and 27b adapted to press the pressing pad 28 are provided at the front and rear intermediate positions on the inner surface. Reference numeral 43 in the drawing denotes a guide pad provided with the lower ends of the rotating arms 39 and 40 so as to guide the recess 32 of the core-shaped segment 31.

Clamping device 37 shown in FIGS. 19 and 20.
When gripping the core-shaped segment 31, the lower ends of the rotating arms 39 and 40 are inserted into the recesses 32 in the middle of the three to align the gripping pin 36 with the front and rear bolt holes 35. After that, the pin driving jack 41 is operated to project the gripping pin 36 so that the pin is inserted into the front and rear bolt holes 35.

Subsequently, the support jacks 27a and 27b
To press the pressing pad 28 against the inner surface of the segment 31 to suppress the wobbling of the segment 31, and thereafter to move the segment 31 to a predetermined fastening position in the same manner as the segment assembling apparatus of FIGS. 9 to 12. , The existing segment 3 by the support jacks 27a and 27b
Rolling is adjusted so that the posture matches with No. 1, and bolts are fastened to the existing segment 31.

However, each of the segment assembling apparatus shown in FIGS. 9 to 12 and the segment assembling apparatus shown in FIGS. 19 and 20 has two support jacks 27a and 2a.
Since 7b only presses the front-rear intermediate position on the left and right sides of the inner surfaces of the segments 18 and 31, the rolling can be adjusted but the pitching (inclination in the front-rear direction) cannot be adjusted. When the segments 18 and 31 gripped by the segment assembling device are tilted in the front-rear direction, or when the center of the assembled tunnel segment and the center of the shield machine are tilted or misaligned, the assembly is performed. Segment 18,3
When the corner of 1 collides with the existing segments 18 and 31 and is missing, or there is a problem that the seal material 29 such as rubber is damaged, and the error in the inclination of the segments 18 and 31 in the front-rear direction is large. Had problems such as the case where the segments 18 and 31 could not be assembled.

Therefore, in recent years, as shown in FIGS. 15, 16 and 21 to 23, a total of four support jacks 27a are provided at the front left and right positions and the rear left and right positions of the sliding guide block 15. It is conceivable that it is provided with 27b, 27c and 27d so as to press the inner surfaces of the segments 18 and 31 at four positions in front, rear, left and right as shown in FIGS.

At this time, since the segment 18 shown in FIGS. 15 and 16 is adapted to clamp and grasp the grasping metal piece 19 by the grasping block 20 of the clamp device 21, the segment 18 at the grasping metal piece 19 portion is Although rolling and pitching can be performed freely within a certain range, the clamp device 37 shown in FIGS. 19 and 20 restrains the segment 31 by the four gripping pins 36, so that the segment 31 can be freely rotated. There is very little power and therefore no rolling and pitching adjustments can be made.

Therefore, as shown in FIGS.
The sliding guide block 15 is provided with a fixing member 44 across the right and left, and a swinging bracket 46 is provided on the fixing member 44 via a spherical bearing 45. The swinging bracket 46 is the same as in FIGS. 19 and 20. It has been considered that the clamp device 37 is suspended.

[0026]

However, as shown in FIG.
As shown in FIG. 16 and FIGS.
Book support jacks 27a, 27b, 27c, 27d
In the configuration including, the adjustment of the rolling synchronizes the support jacks 27a and 27c with 27b and 27d.
Must be synchronized, and the pitching adjustment must be performed by synchronizing the support jacks 27a and 27b.
It is necessary to synchronize c and 27d. That is, one support jack needs to be switched and synchronized with the other two support jacks, and therefore the four support jacks 27a, 27b, 27c, 27d must be extended and contracted in synchronization (at the same speed). However, there is a problem that it is very difficult to equalize the expansion and contraction speeds of the four support jacks 27a, 27b, 27c, 27d in this way.

If the above-mentioned synchronization is not achieved, the support jacks 27a, 27a,
When considering pushing 27c and pulling support jacks 27b and 27d, rolling can be performed, but three (or two)
(1) support jack plays the role of a presser foot, and one (or 2) support jack floats in the air, and does not serve as a support, and the segments 18 and 31 become unstable, or rolling. There is a problem that the posture of the segments 18 and 31 changes in a direction different from the direction, and the desired adjustment cannot be performed.

Further, as described above, the method of adjusting the postures of the segments 18 and 31 provided with the four support jacks 27a, 27b, 27c and 27d is changed, as shown in FIG.
As shown by taking the case of the segment 18 as an example, the support jacks 27a and 27b for pressing the front and rear intermediate portions on the left and right sides of the segment 18 are provided, and the support jacks 27e and 27e for pressing the front and rear portions on the left and right intermediate portions of the segment 18 are provided. A method of providing 27f is also conceivable.

However, in this method, since the front and rear support jacks 27e and 27f are positioned at the center of the segment 18 in the left-right direction, there is a problem that the supply of the segment 18 and the gripping operation of the segment 18 are hindered. That is, since the operator performs the positioning operation when gripping the segment 18 with the clamp devices 21 and 37 by moving the position of the sliding guide block 15 while confirming the positional relationship from the rear, the segment 18 is gripped. There is a problem that a part is hidden by the support jack 27f and becomes difficult to see.

Further, the stable pitching can be realized if either one of the support jacks 27e and 27f hits the segment 18, so that one support jack is redundant. That is, regarding the case where the support jack 27e is pulled and the support jack 27f is pushed, if the support jack 27f is pushed, the support jack 2
The segment 18 is stabilized by 7a, 27b and 27f. When the rolling adjustment is performed next while the support jacks 27e and 27f are idle, there is a problem that the segment 18 moves in an unexpected direction.
Therefore, it is necessary to control so that the pushing amount of the support jack 27e and the pulling amount of the support jack 27f become equal, and that the pulling amount of the support jack 27e and the pushing amount of the support jack 27f become equal.

As described above, the support jack 27
In the method provided with a, 27b, 27c, 27d or the method provided with support jacks 27a, 27b, 27e, 27f, there is redundancy due to the four support jacks, and this redundancy is controlled. Therefore, some control is required, which causes a problem that the device configuration becomes complicated.

The present invention has been made in view of the above circumstances, and it is possible to simplify the arrangement of the support jack and the control device, and to ensure that the rolling and the pitching can be adjusted by the support jack. It is an object of the present invention to provide a segment assembling device for a shield machine.

[0033]

A segment assembling apparatus for a shield machine according to the present invention is provided with a suspension beam which is rotatable in a circumferential direction and which is provided with a power unit, and a suspension beam which is movable in a radial direction of the rotary frame. A shield machine equipped with a slidable guide block that is movable in the axial direction of a rotary frame on the suspension beam, a clamp device that grips a segment on the slidable guide block, and a support jack that presses the inner surface of the segment. In the segment assembling device, the front support jacks are arranged at the left and right central portions on the front side of the sliding guide block,
Rear left and right side support jacks are arranged on both left and right sides on the rear side of the sliding guide block.

The front support jack, the rear left support jack and the rear right support jack are arranged at equal intervals in the front and rear with respect to the center of clamp of the segment by the clamp device. It is characterized in that the three positions of the center of gravity of the support jack, the rear left support jack and the rear right support jack are arranged so as to coincide with the clamp center of the segment by the clamp device.

Further, the front main pipe connected to the power unit is connected to the front support jack via the front solenoid valve, the rear main pipe connected to the power unit is branched, and the branched left rear pipe is connected to the rear left. Connect to the rear left support jack via the solenoid valve, and connect the other branched rear right pipe to the rear right support jack via the rear right solenoid valve, and connect the rear left support jack and the rear right support jack to the rod side. The present invention is characterized in that a bypass pipe that connects the head pipes to each other and the head side is provided, and a switching valve that connects and disconnects to the bypass pipe is provided.

In the present invention, the posture control of the segment is performed by a minimum of three support jacks. Therefore, the structure of the support jack can be simplified, and the rear left support jack and the rear right support jack are Since they are arranged with a large space left and right, the rear left and right support jacks do not get in the way when positioning the segments while monitoring the gripped portion from the rear.

When the front support jack and the rear left and right support jacks are arranged at the same distance in the front and rear with respect to the clamp center of the segment by the clamp device, the strokes on the pushing side and the pulling side are made equal during pitching adjustment. Therefore, the operator's operation can be facilitated.

If the three center of gravity positions of the front support jack and the rear left and right support jacks are arranged so as to match the clamp centers of the segments by the clamp device, the front support jack and the rear left and right support jacks are arranged. It becomes possible to balance the force in the pitching direction with, so that the same support jack by design,
The same set hydraulic pressure can be used, which facilitates the design.

The front main pipe connected to the power unit is
Connect to the front support jack via the front solenoid valve, branch the rear main pipe connected to the power unit, and connect one branched left rear pipe to the rear left support jack via the rear left solenoid valve. At the same time, the other branched rear right pipe is connected to the rear right support jack via the rear right solenoid valve, and further, a bypass pipe is provided which connects the rear left support jack and the rear right support jack to the rod side and the head side. Since the bypass valve is provided with a switching valve for connecting and disconnecting the pipeline, the rolling adjustment is performed by pushing and pulling the rear left and right support jacks with the front support jack stopped. When the pitching is adjusted, use the bypass pipe to adjust the pitch to the opposite direction. By communicating with the right side support jack, the difference in the flow rate of the pressure oil is eliminated so that there is no change in the expansion and contraction operation, so the rolling and pitching of the segment can be adjusted reliably with a simple hydraulic circuit. be able to.

[0040]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an embodiment of the present invention. The same components as those shown in FIGS. 10 to 13 are designated by the same reference numerals and detailed description thereof will be omitted. .

Rotating frame 1 along the guide rod 14
The sliding guide block 15 supported by the suspension beam 9 so as to be movable in the direction of the axis of is formed in a U shape with the rear open when viewed in plan as shown in FIG. The segment 1 is provided on the inner lower side of the sliding guide block 15 having a letter shape.
A clamp device 21 for holding 8 is provided.

Further, the U-shaped sliding guide block 15
The front support jacks 47 are arranged on the lower sides of the left and right central portions on the front side, and the rear left support jacks 48 and the rear right support jacks 49 are arranged on the lower sides of the rear end portions of the sliding guide block 15. 28 is a segment 1 provided at the lower end of the support jacks 47, 48, 49.
8 is a pressing pad for pressing the inner surface of 8. Further, as shown in FIG. 2, the spherical surface 1 is provided on the lower surface of the gripping hardware 19 so that the segment 18 can be easily rocked by the gripping block 20.
9a is formed.

In FIG. 3, the front support jack 47, the rear left support jack 48, and the rear right support jack 49 have the same spacing L in the front and rear with respect to the clamp center O of the segment 18 by the clamp device 21. It is arranged to be in a position.

The hydraulic circuits of the support jacks 47, 48, 49 of the segment assembling apparatus shown in FIGS. 1 to 4 are constructed as shown in FIG.

As shown in FIG. 6, the front main pipe 50 connected to the power unit P is connected to the front support jack 47 via the front solenoid valve 51, and the rear main pipe 52 connected to the power unit P is branched. Then, one branched left rear pipe 53 is connected to the rear left support jack 48 via the rear left solenoid valve 54, and the other branched rear right pipe 55 is connected to the rear right support jack via the rear right solenoid valve 56. Connect to 49.

Further, the rear left support jack 48 is provided.
And a bypass pipe 57 that connects the rod side a of the rear right support jack 49 and the head side b of the rear right support jack 49 to each other, and a switching valve 58 that connects and disconnects the pipeline to the bypass pipe 57.
To arrange. In the figure, 59 is a pressure setting valve, 60a is a relief valve, and 60b is a flow control check valve.

Next, the operation of the above embodiment will be described.

When the segment 18 is gripped by the segment assembling apparatus shown in FIGS. 1 to 4 and moved to a predetermined fastening position to control the posture, the front support jack 47 fixes expansion and contraction for rolling adjustment. In this state, the rear left support jack 48 is pulled and the rear right support jack 49 is pushed, or the rear left support jack 48 is pushed and the rear right support jack 49 is pulled.

For adjusting the pitching, pulling the front support jack 47 and pushing the rear left and right side support jacks 48, 49, or the front support jack 47.
And pushing the rear left and right side support jacks 48, 49.

Further, the rolling and pitching adjustments will be described with reference to the hydraulic circuit shown in FIG. 6. The rolling adjustment is performed when the front solenoid valve 51 is switched to the shut-off side to stop the expansion and contraction of the front support jack 47. , The switching valve 58 is switched to the shutoff side, and the rear left and right support jacks 48, 49 are switched so that the rear left and right support jacks 48, 49 operate in opposite directions. Reverse operation of pushing and pulling at the same time.

The adjustment of pitching is performed by the switching valve 5
8 to the communication state, and when the front support jack 47 is pushed and pulled by switching the front solenoid valve 51, the rear left solenoid valve 54 and the rear right solenoid valve 56 are moved in the same direction and the front portion is opened. By simultaneously switching in the opposite direction to the electromagnetic valve 51, the rear left and right side support jacks 48, 49 are operated in reverse to the pushing and pulling operations of the front support jack 47.

At the time of adjusting the pitching, it is necessary to operate the rear left and right support jacks 48 and 49 in synchronization, but the two rear left and right support jacks 48 and 4 are required.
Since only 9 is synchronized, the operation is easier than the conventional method of synchronizing four support jacks, and the control circuit can be simplified.

That is, at the time of adjusting pitching, the switching valve 58
With the bypass pipe 57 provided with, the rod side a and the head side b of the rear left support jack 48 and the rear right support jack 49 can be communicated with each other, so that the expansion and contraction operation can be performed due to the difference in the flow rate of the pressure oil. There is no change, so stable synchronization can be performed and reliable pitching adjustment can be performed.

As described above, the three support jacks 47, 48, 49 that minimize the attitude control of the segment 18 are provided.
The support jack 47,
The structure of 48 and 49 is simplified, and the rolling and pitching of the segment 18 can be surely adjusted by a simple hydraulic circuit as shown in FIG. 6, and further, the rear left support jack 48 and the rear right support are provided. Since the jacks 49 are arranged with a large space left and right,
The rear left and right support jacks 48, 49 are used when positioning the segment 18 while monitoring the gripped portion from the rear.
Does not get in the way.

Further, as shown in FIG. 3, the front support jack 47 and the rear left and right support jacks 48, 49 are provided.
By arranging and at the same distance L in the front and rear with respect to the clamp center O of the segment 18 by the clamp device 21, it is possible to equalize the strokes on the push side and the pull side during pitching adjustment. Can be facilitated.

Further, FIG. 5 shows the front support jack 47.
And the case where the rear left support jack 48 and the rear right support jack 49 are arranged so that the positions of the center of gravity of the three points coincide with the clamp center O of the segment 18 by the clamp device 21. Front support jack 47, rear left support jack 48, and rear right support jack 4
The distance before and after 9 has a relationship of 2S to S.

As shown in FIG. 5, the support jack 47,
With the arrangement of 48 and 49, the front support jack 47
As a result, the forces in the pitching direction can be balanced with the rear left and right support jacks 48, 49. Therefore, the same support jack and the same hydraulic piping can be used in the design, which facilitates the design.

FIG. 7 and FIG. 8 show an example of a case where the present invention is applied to the conventional device of FIG. 21 and FIG. 22, and a clamp in which a segment 31 is swingably supported by a spherical bearing 45. As in FIG. 3, the front support jack 47, the rear left support jack 48, and the rear right support jack 49 are arranged in the planar U-shaped sliding guide block 15 provided with the device 37. .

In the case of FIG. 8 as well, the same operation as in the embodiment of FIGS. 1 to 4 can be performed, and as shown in FIG. 5, the front support jack 47 with respect to the clamp center O,
The rear left and right support jacks 48, 49 may be arranged such that the distance between them is 2S to S so that the forces in the pitching direction are balanced.

[0061]

According to the segment assembling apparatus of the shield machine of the present invention, the posture control of the segment is performed by the minimum of three support jacks, so that the structure of the support jack can be simplified. In addition, the rear left support jack and the rear right support jack are arranged with a large left and right spacing, so the rear left and right support jacks are an obstacle when positioning the segment while monitoring the gripped portion from the rear. There is no such thing.

If the front support jack and the rear left and right support jacks are arranged at the same distance in the front and rear with respect to the clamp center of the segment by the clamp device, the strokes on the pushing side and the pulling side are made equal during pitching adjustment. Therefore, the operator's operation can be facilitated.

If the three center of gravity positions of the front support jack and the rear left and right support jacks are arranged so as to coincide with the clamp centers of the segments by the clamp device, the front support jack and the rear left and right support jacks are arranged. It becomes possible to balance the force in the pitching direction with, so that the same support jack by design,
The same hydraulic piping can be used, which facilitates the design.

The front main pipe connected to the power unit is
Connect to the front support jack via the front solenoid valve, branch the rear main pipe connected to the power unit, and connect one branched left rear pipe to the rear left support jack via the rear left solenoid valve. At the same time, the other branched rear right pipe is connected to the rear right support jack via the rear right solenoid valve, and further, a bypass pipe is provided which connects the rear left support jack and the rear right support jack to the rod side and the head side. Since the bypass valve is provided with a switching valve for connecting and disconnecting the pipeline, the rolling adjustment is performed by pushing and pulling the rear left and right support jacks with the front support jack stopped. When the pitching is adjusted, use the bypass pipe to adjust the pitch to the opposite direction. By communicating with the right side support jack, the difference in the flow rate of the pressure oil is eliminated so that there is no change in the expansion and contraction operation, so the rolling and pitching of the segment can be adjusted reliably with a simple hydraulic circuit. be able to.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional side view showing an example of an embodiment of the present invention.

FIG. 2 is a detailed front view of the main part of FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a plan view of the segment of FIG.

FIG. 5 is a plan view showing another example of arrangement of the support jacks of the present invention.

FIG. 6 is a hydraulic circuit diagram of the support jack of the present invention.

FIG. 7 is a front view of a main part showing another application example of the present invention.

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is a schematic front view of a conventional segment assembly device.

FIG. 10 is a vertical sectional side view of FIG. 9;

11 is a detailed front view of the main part of FIG.

FIG. 12 is a plan view of FIG.

FIG. 13 is a plan view of the segment of FIG.

FIG. 14 is a view taken in the direction of arrows XIV-XIV in FIG. 13;

FIG. 15 is a plan view showing an example in which four conventional support jacks are arranged.

16 is a plan view of a segment supported by the device of FIG.

FIG. 17 is a plan view of a core segment.

FIG. 18 is a view on arrow XVIII-XVIII in FIG. 17.

FIG. 19 is a front view showing a main part of another example of a conventional segment assembly device.

FIG. 20 is a view on arrow XX-XX in FIG. 19;

21 is a front view of the main parts showing an example in which four support jacks are arranged in the clamp device of FIG.

22 is a plan view of FIG. 21. FIG.

23 is a plan view of a segment supported by the device of FIG. 22. FIG.

FIG. 24 is a plan view of a segment showing another arrangement example of four support jacks.

[Explanation of symbols]

 1 Rotating Frame 9 Suspended Beam 15 Sliding Guide Block 18 Segment (Flat Segment) 21 Clamping Device 31 Segment (Core Segment) 37 Clamping Device 47 Front Support Jack 48 Rear Left Support Jack 49 Rear Right Support Jack 50 Front Main Piping 51 Front solenoid valve 52 Rear main piping 53 Rear left piping 54 Rear left solenoid valve 55 Rear right piping 56 Rear right solenoid valve 57 Bypass pipe 58 Switching valve O Clamp center P Power unit a Rod side b Head side

Claims (4)

[Claims] 1. A suspension frame, which rotates in a circumferential direction and is provided with a power unit, is provided with a suspension beam movable in the radial direction of the rotation frame, and the suspension beam is slidable in the axial direction of the rotation frame. A segment assembling device for a shield machine, comprising a clamp device for mounting a dynamic guide block, gripping a segment on the sliding guide block, and a support jack for pressing an inner surface of the segment, the segment assembling device on the front side of the sliding guide block. A front support jack is arranged at the center of the left and right, and a rear left support jack and a rear right support jack are arranged on both left and right rear sides of the sliding guide block. apparatus. 2. The front support jack, the rear left support jack and the rear right support jack are arranged at equal intervals in the front and back with respect to the clamp center of the segment by the clamp device. A segment assembling device for the shield machine as described. 3. The front support jack, the rear left support jack, and the rear right support jack are arranged so that the center of gravity at three points coincides with the clamp center of the segment by the clamp device. 1. A segment assembling apparatus for a shield machine according to 1. 4. A front main pipe connected to a power unit is connected to a front support jack via a front solenoid valve, a rear main pipe connected to a power unit is branched, and one branched left rear pipe is rear left. Connect to the rear left support jack via the solenoid valve, and connect the other branched rear right pipe to the rear right support jack via the rear right solenoid valve, and connect the rear left support jack and the rear right support jack to the rod side. 2. A segment assembling apparatus for a shield machine according to claim 1, further comprising a bypass valve that connects the head pipes to each other and a switching valve that connects and disconnects the bypass pipe.