JPH10148099A - Segment-turn lifter for shield excavating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently supply segments to an assembling device of segments, by turning over segments sent in from the outside and raising them up to an upper segment feed conveyor to stock them, in a shield excavating machine. SOLUTION: A lifting frame 46 is provided in a gate type turn lifter body constituted of guide posts 40 transferable on rails and connection beams 41, and a turning-over frame 55 is provided through a slewing center shaft 53, in a segment-turn lifter 35. The lifting frame 46 is lowered and the segments 20 sent in from the outside are held by a segment holder 58 of the turning-over frame 55 and raised and the frame 55 is turned over at the middle position and further raised up to the uppermost position to transfer the segments 20 on segment guide rollers 64, 65 onto a segment-supply conveyor by a segment pusher. By the repetition of this motion, the segments 20 are stocked on the segment-supply conveyor. Accordingly, the segments can be efficiently supplied to the segment-assembling device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

More specifically, the present invention relates to a segment turn lifter for a shield machine capable of lifting a segment upward when a segment is supplied from above to a segment assembling apparatus.

[0003]

2. Description of the Related Art Conventionally, shield excavators have been used to excavate tunnels in the soil.

[0004] The shield machine, as shown in FIG.
A disk-shaped cutter 2 is rotatably mounted on a distal end surface of a cylindrical shield frame 1, and the cutter 2 is rotated to excavate soil, and a segment assembling device 3 provided inside the shield frame 1 is provided. As a result, a circular arc-shaped segment 5 made of concrete or the like is assembled in a digging pit 4 excavated by the cutter 2 to construct a concrete tunnel 6, and further, a shield provided inside the shield frame 1. The jack 7 allows the distal end of the existing portion of the tunnel 6 to support the reaction force to propel the shield frame 1.

In the drawing, reference numeral 8 denotes a center shaft provided at the axial center of a shield drilling machine such as a mud type with a large-diameter shield, 9 denotes a rear work bench mounted at the rear of the center shaft 8 in a cantilever state, Reference numeral 10 denotes an operation room provided on the rear work table 9, which is suitable for monitoring automatic assembly especially when the segment assembling apparatus 3 is a robot type.

The supply of the segments 5 to the segment assembling apparatus 3 has been performed, for example, as follows.

That is, a sleeper 11 is installed at a lower portion in the tunnel 6 and a rail 12 is extended and laid on the sleeper 11 as appropriate, and along the rail 12, a carriage 13 is used from the outside to the front of the shield frame 1. The segment 5 is transported in a state where the segment 5 is projected downward and the arc is directed in the longitudinal direction of the tunnel 6, and the transported segment 5 is moved to the rear work table 9.
Through the lower gap 14 as shown by the arrow 15 so as to be supplied to the segment assembling apparatus 3 from below.

[0008]

However, the above-mentioned conventional segment transport / supply device for a shield machine has:
There were the following problems.

That is, when the segment 5 is supplied to the segment assembling device 3 from the lower side of the rear work table 9 particularly when the robot automatically performs segment assembly, when the excavation diameter is about 12 m or less, the clearance below the rear work table 9 is used. The gap 1 between the existing segment 5 and the segment receiving section 14 or the lower part of the robot
4 'is very narrow in most cases, so that it is difficult to provide a conveyor, a crane or the like reaching the gaps 14 and 14', and it has been difficult to pass the segment 5 from below.

The present invention has been made in view of the above circumstances, and provides a segment turn lifter for a shield machine which can lift a segment well when supplying the segment from above to a segment assembling apparatus. It is intended for.

[0011]

According to the present invention, there is provided a gate-shaped turn lifter main body which is movable in accordance with the movement of the shield excavator 23, and which is provided so as to be able to ascend and descend relative to the turn lifter main body, and has a downwardly convex state. A frame-like elevating frame 46 having a segment passing hole 45 large enough to allow the segment 20 directed in the width direction of the tunnel 21 to pass, an elevating drive mechanism 47 for driving the elevating frame 46 to elevate, and a segment passing through the elevating frame 46 Tunnel 2 at hole 45
A segment reversing device 48 mounted to be reversible clockwise or counterclockwise about a pivot center axis 53 extending in the longitudinal direction of one and the segment 20 lifted to the upper portion of the turn lifter main body 42 by the lifting frame 46.
And a segment pusher 49 such as a jack for sending the segment feeder to the segment supply conveyor 35.

In this case, the segment reversing device 4
8 is a turning center axis 53 extending in the longitudinal direction of the tunnel 21.
To the reversing frame 55 whose upper part is pivotally supported by the elevating frame 46 so as to be reversible around the center, and to a keyhole-shaped gripping hole 56 formed at the center position of the inner peripheral surface of the segment 20 attached to the reversing frame 55. Segment gripping device 58 having key-shaped segment locking fixture 57 that can be inserted and locked
And a reversing drive mechanism 59 for reversing the reversing frame 55.

A position fixing mechanism 63 for fixing the position of the segment 20 may be provided on the upper surface of the reversing frame 55.

Further, on the upper surface of the reversing frame 55, segment guide rollers 64 and 65 for supporting the segment 20 and guiding the feed of the segment 20 may be provided.

According to the above means, the following effects can be obtained.

The segment turn lifter 36 lifts the segment 20 in which the arc is directed downward in the width direction of the tunnel 21 in a downwardly convex state, and uses the segment reversing device 48 while lifting the segment 20 upward. 20
Is turned around the turning center axis 53 in the longitudinal direction of the tunnel 21, and the segment 20 lifted and turned to the upwardly convex state is sent out by the segment pusher 49.

More specifically, first, the elevating frame 46 is located at the upper end of the turn lifter main body 42 and the reversing frame 55 of the segment reversing device 48 is connected to the segment locking fixture 5.
7 is turned downward, and from this state, the lifting frame 46 is lowered along the turn lifter main body 42 by using the lifting drive mechanism 47.

Then, the reversing frame 55 is placed on the inner peripheral surface of the segment 20 with the downwardly projecting circular arc directly below the segment turn lifter 36 directed in the width direction of the tunnel 21.
A plurality of segment guide rollers 64, 6 attached to
5, the lowering of the lifting frame 46 is stopped, and the key-shaped segment locking fixture 57 of the segment gripping device 58 is moved to the keyhole formed at the center position of the inner peripheral surface of the segment 20. The segment 20 is inserted into the gripping hole 56 so as to lock the segment 20.

After the segment 20 is locked, the position fixing mechanism 63 is used to further lock the segment 20.
To fix the position.

Next, contrary to the above, the lifting drive mechanism 47
The lifting frame 46 holding the segment 20 is lifted by using the turning lifter main body 42, and is temporarily stopped at around the intermediate portion of the turn lifter main body 42. The inverted frame 55 is inverted for each segment 20.

When the segment 20 is turned over, the lifting frame 46 is raised to the upper end of the turn lifter main body 42 to lift the segment 20.

Finally, with respect to the segment 20 lifted by the lifting frame 46, the locked state of the segment 20 by the segment gripping device 58 is released in a procedure reverse to the above, and the released segment 20 is released. By using the segment pusher 49, the segment guide rollers 64 and 65 are sent out along the reversing frame 55 provided on the upper surface.

Thereafter, by repeating the above, the segments 20 of all the conveyor supporting carts 33 are lifted one by one.

As described above, according to the present invention, when the segment 20 is supplied to the segment assembling apparatus 18 from the upper side, the segment 20 can be lifted well.

Further, since the lifting frame 46 is attached to the gate-shaped turn lifter main body 42 so as to be able to move up and down,
It is possible to allow the turn lifter main body 42 to receive a reaction force when lifting the segment 20 or inverting the segment 20 via the lifting frame 46 with a margin.

Further, since the segment 20 is turned around the turning center shaft 53 extending in the longitudinal direction of the tunnel 21, the reaction force of the turning of the segment 20 acting on the turn lifter main body 42 is upward or downward. This is one of the forces, and the torsional force does not act on the turn lifter main body 42 as a reversal reaction force as in the case of reversing the segment 20 back and forth around the turning center axis extending in the width direction of the tunnel 21. Therefore, the support structure of the lifting frame 46 with respect to the turn lifter main body 42 can be made advantageous.

Since the turning center shaft 53 is located on the upper surface side of the reversing frame 55 where the segment locking fixture 57 protrudes, the turning radius when turning the segment 20 is minimized, and the segment 20 can be easily formed. Can be inverted.

Further, by setting the turning center axis 53 so as to be located between the reversing frame 55 and the segment 20 gripped by the reversing frame 55, the reversing frame 55 can be used as all or a part of the counterweight. The weight of the device and the strength can be reduced accordingly.

Further, segment guide rollers 64 and 65 and a position fixing mechanism 63 are provided on the upper surface side of the reversing frame 55 to support and fix the position of the segment 20, so that the segment locking and fixing tool 57 is required. The strength can be reduced, and the segment 20 can be stably inverted.

As described above, the size of the apparatus is reduced to 8 to 10
It is possible to handle a segment 20 having a weight as large as ton or more.

[0031]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show a first embodiment of the present invention.

As shown in FIG. 1, a disk-shaped cutter 17 is rotatably mounted on the distal end surface of a cylindrical shield frame 16, and the cutter 17 is rotated so that soil can be excavated. The segment assembling device 18 provided inside the frame 16 assembles a circular arc-shaped segment 20 made of concrete or the like into a pit 19 excavated by the cutter 17 so that a concrete tunnel 21 can be constructed. Further, the shield excavator 23 is configured so that the shield jack 16 provided inside the shield frame 16 can support the reaction force at the tip of the existing portion of the tunnel 21 to propell the shield frame 16.

In the drawing, reference numeral 24 denotes a center shaft provided at an axial center position of a shield excavator 23 of a large diameter such as a muddy water type, 25 denotes a rear working table mounted in a cantilever state on a rear portion of the center shaft 24, 26 is an operation room provided on a rear working table 25 suitable for an automatic assembling robot, 27 is a sleeper installed at a lower part in the constructed tunnel 21, 2.
8 to 30 are a plurality of sets that are extended and laid on the sleepers 27 (FIG. 3).
In this case, three sets of six rails), 31 is rail 2
A transport vehicle 32 running along the middle set of rails 29 of 8 to 30, and a small electric locomotive 32 called a battery locomotive for towing the transport vehicle 31.

In the case of the present invention, as shown in FIGS.
Outer set of rails 28, 30 of rails 28-30
A conveyor support trolley 33 is mounted so as to be movable together with the excavation of the shield excavator 23 along the, and a segment supply is provided between the conveyor support trolley 33 and the upper part of the rear work table 25 via a conveyor support beam 34. The conveyor 35 is mounted.

The rear rails 28, 30 of the rails 28 to 30 are located behind the conveyor supporting cart 33.
The segment turn lifter 36 according to the present invention is mounted so that the segment turn lifter 36 can move together with the conveyor supporting cart 33 along the line.

At this time, the segments 20 are stacked on the transport vehicle 31 in a state where the segments 20 are projected downward and the arcs are directed in the longitudinal direction of the tunnel 21.
A segment turning device 38 such as a turntable for rotating the segment 20 by 90 degrees so that the arc of the segment 20 is directed in the width direction of the tunnel 21 is attached to the upper part of the segment.

The segment turn lifter 36 is provided in FIG.
As shown in FIG. 4, a pair of traveling portions 39 movable along the rails 28 and 30, a pair of guide posts 40 raised from each traveling portion 39, and an upper end of the guide posts 40 are connected. A gate-shaped turn lifter main body 42 composed of a connecting beam 41 before and after the fitting is fitted to a concave groove-shaped guide surface 43 formed in a vertical direction on a facing surface of each guide post 40 via a guide member 44 so as to be able to move up and down. And a frame-shaped elevating frame 46 having a segment passage hole 45 large enough to allow the arc 20 to pass through the segment 20 in a state where the arc is directed in the width direction of the tunnel 21, and an elevating drive mechanism 47 for driving the elevating frame 46 to elevate and lower. Segment reversing device 48 attached to the segment passing hole 45 of the lifting frame 46
And a segment pusher 49 such as a jack for sending the segment 20 lifted to the upper part of the turn lifter main body 42 by the lifting frame 46 to the segment supply conveyor 35.

It is preferable in design that the elevating frame 46 has a hat shape with its central portion raised.

The lifting drive mechanism 47 includes a ball screw 50 rotatably provided on each guide post 40.
, A nut 51 provided on the lifting frame 46, and a lifting drive device 52 such as a jack for rotatingly driving the ball screw 50.

The lifting drive mechanism 47 includes a ball screw 50
Instead of the mechanism using the nut and the nut 51, a mechanism that raises and lowers the lifting frame 46 using a cable such as a chain or a wire, or another equivalent mechanism may be used.

Next, as shown in FIGS. 4 and 5, the segment reversing device 48 mounts the bearing 54 on the elevating frame 46 so as to be reversible about a turning center shaft 53 extending in the longitudinal direction of the tunnel 21. A reversing frame 55 whose upper part is pivotally supported through the reversing frame 55, and a key-like frame which is attached to the reversing frame 55 and can be inserted and locked into a keyhole-like gripping hole 56 formed at the center position of the inner peripheral surface of the segment 20. Segment gripping device 5 having segment locking fixture 57 on upper surface side
8 and a reversing drive mechanism 59 for reversing the reversing frame 55
And a position fixing pin 61 and a position fixing pin which can be inserted into and removed from a tapered positioning hole 60 formed on the inner peripheral surface of the segment 20 on the upper surface of the reversing frame 55. A position fixing mechanism 63 including a position fixing pin driving device 62 such as a jack for operating the 61 is provided. A plurality of segment guide rollers 64 and 65 are provided on the upper surface of the reversing frame 55.

The inner segment guide roller 65
May be provided when supporting and guiding the small segment 20, and is not particularly necessary when supporting and guiding only the large segment 20. Also, if necessary
A segment guide roller 66 continuous with the segment guide rollers 64 and 65 may be provided on the front side of the elevating frame 46 or the like.

Further, as shown in FIG. 5, the segment gripping device 58 is attached to the reversing frame 55 via an insertion / removal driving mechanism 67 such as a jack so as to be capable of moving toward and away from the inner peripheral surface of the segment 20. Insertion and removal frame 68,
A lock device 69 such as a motor for rotating the key-shaped segment locking fixture 57 attached to the insertion / removal frame 68 is provided.

As shown in FIG. 4, the reversing drive mechanism 59 has a pinion 70 mounted on the pivot shaft 53.
And a rack 71 attached to the lifting frame 46 so as to be movable in the width direction of the tunnel 21, and a reversing drive device 72 such as a jack for moving the rack 71. Note that the turning center axis 53 is
And the segment 20 gripped by the reversing frame 55.

The segment pusher 49 is attached to the connecting beam 41 on the rear side via a bracket 73.

Next, the operation will be described.

The shield excavator 23 excavates the soil by rotating a disk-shaped cutter 17 attached to the distal end surface of a cylindrical shield frame 16, and a segment assembling device 18 provided inside the shield frame 16. As a result, a circular arc-shaped segment 20 made of concrete or the like is assembled in an excavation hole 19 excavated by the cutter 17 to form a concrete tunnel 21, and further, a shield jack 22 provided inside the shield frame 16 is formed. Accordingly, the reaction force is supported at the tip of the existing portion of the tunnel 21 and the shield frame 16 is propelled.

In the present invention, the supply of the segments 20 to the segment assembling apparatus 18 is performed as follows.

That is, the sleeper 27 is installed at the lower part in the tunnel 21 and the rails 28 to 30 are extended and laid appropriately on the sleeper 27, and along the rail 29, a small electric engine called a battery locomotive is installed. The segment 20 loaded on the carrier 31 in a state in which the carrier 31 is towed (or pushed back) using the car 32 and protruded downward from the outside to the segment turn lifter 36 and directed in the longitudinal direction of the tunnel 21. Segment 2 that has been transported
0 is stopped at a position immediately below the segment turn lifter 36, and the segment 20 is turned 90 degrees by using a segment turning device 38 such as a turntable attached to the carrier 31 so that the arc is directed in the width direction of the tunnel 21. The segment 20 is turned in the horizontal direction, and the turned segment 20 is lifted up using the segment turn lifter 36, and the segment 2 is turned on.
While lifting 0 upward, the segment 20 is inverted using the segment reversing device 48 either clockwise or counterclockwise about the longitudinal turning center axis 53 of the tunnel 21, and is lifted and moved upward. The segment 20 inverted to the convex state is transported using a segment supply conveyor 35 mounted between the conveyor support cart 33 and the upper part of the rear work table 25 via a conveyor support beam 34, and the segment 20 is segmented from above. Segment 20 to assembly device 18
Is supplied.

The segment turn lifter 36 according to the present invention lifts and reverses the segment 20 as follows.

That is, first, the lifting frame 46 is positioned at the upper end of the guide post 40, and the reversing frame 55 of the segment reversing device 48 is set in a state where the segment locking fixture 57 faces downward. By driving the lifting / lowering drive device 52 such as a jack of the mechanism 47 to rotate the ball screw 50, the lifting / lowering frame 46 is formed via the nut 51 on the facing surface of each guide post 40 in the form of a concave groove-shaped guide. It is lowered along the surface 43.

Then, the segments 20 stacked on the carriage 31 stopped immediately below the segment turn lifter 36 with the downwardly projecting arc directed in the width direction of the tunnel 21.
Since the plurality of segment guide rollers 64 and 65 attached to the reversing frame 55 hit the inner peripheral surface of the reversing frame 55 and cannot be further lowered, the lowering of the elevating frame 46 is stopped and the insertion / removal driving mechanism 67 such as a jack is extended. By moving the insertion / removal frame 68 toward the inner peripheral surface of the segment 20, the key-shaped segment locking fixture 57 of the segment gripping device 58 attached to the insertion / removal frame 68 is moved to the inner peripheral surface of the segment 20. The segment 20 is inserted into the keyhole-shaped gripping hole 56 formed at the center position, and the segment locking fixture 57 is rotated in the gripping hole 56 by driving a lock device 69 such as a motor to lock the segment 20. .

After the segment 20 is locked, the position fixing pin driving device 62 such as a jack of the position fixing mechanism 63 is further extended to move the position fixing pin 61.
Is inserted into a tapered positioning hole 60 formed on the inner peripheral surface of the segment 20 to fix the position of the segment 20.

Next, contrary to the above, the lifting drive mechanism 47
The raising / lowering frame 46 holding the segment 20 is raised by using the guide post 40, and is stopped once around the intermediate portion of the guide post 40.
The extension 71 causes the rack 71 to move in the width direction of the tunnel 21, and turns the pinion 70 meshed with the rack 71 to rotate around the center axis 53, which extends in the longitudinal direction of the tunnel 21. As shown in FIG. 3, the inversion frame 55 is inverted counterclockwise (or clockwise).

When the segment 20 is turned over in this way, the lifting frame 46 is raised to the upper end of the guide post 40, thereby lifting the segment 20.

Finally, with respect to the segment 20 lifted by the lifting frame 46, the locked state of the segment 20 by the segment gripping device 58 is released in a procedure reverse to the above, and the released segment 20 is released. Using segment pushers 49 such as jacks and jacks, the segment guide rollers 64 and 65 are moved along the reversing frame 55 provided on the upper surface of the segment feeding conveyor 3.
5 to be sent out.

Thereafter, by repeating the above, the segments 20 of all the conveyor supporting carts 33 are lifted one by one.

The segment 2 thus lifted
0 is stored on the segment supply conveyor 35 for several pieces (the length of the segment supply conveyor 35 is preferably set so that one ring of the segments 20 can be stocked). Accordingly, the segments 20 stocked on the segment supply conveyor 35 can be quickly supplied to the segment assembling device 18 to efficiently assemble the segments 20.

As described above, according to the present invention, the segment 2
When 0 is supplied, the segment 20 can be lifted well.

An elevating frame 46 is attached via a guide member 44 to a vertically grooved guide surface 43 which is formed on the opposite surface of each guide post 40 of the gate type turn lifter main body 42 so as to be able to move up and down. Therefore, the turn lifter main body 42 can receive a reaction force when lifting the segment 20 or inverting the segment 20 via the lifting frame 46 with a margin.

Further, since the segment 20 is inverted counterclockwise or clockwise in a vertical plane connecting the left and right guide posts with the center of the turning center axis 53 extending in the longitudinal direction of the tunnel 21 as the center. The reaction force of the reversal of the segment 20 acting on the guide post 40 is one of the upper and lower forces, as in the case of reversing the segment 20 back and forth about the turning center axis extending in the width direction of the tunnel 21. Since no torsional force acts on each guide post 40 as a reverse reaction force, the supporting structure of the lifting frame 46 for each guide post 40 can be made advantageous.

Since the turning center shaft 53 is on the side where the segment locking fixture 57 of the reversing frame 55 protrudes, the turning radius when turning the segment 20 is minimized, and the segment 20 can be easily formed. It is possible to invert.

Further, by setting the turning center axis 53 so as to be located between the reversing frame 55 and the segment 20 gripped by the reversing frame 55, the reversing frame 55 can be used as all or a part of the counterweight. The weight of the device and the strength can be reduced accordingly.

Further, segment guide rollers 64 and 65 and a position fixing mechanism 63 are provided on the upper surface side of the reversing frame 55 to support and fix the position of the segment 20, so that the segment locking and fixing tool 57 is required. The strength can be reduced, and the segment 20 can be stably inverted.

As described above, while miniaturizing the apparatus, 8-10
It is possible to handle a segment 20 having a weight as large as ton or more.

FIGS. 6 and 7 show a second embodiment of the present invention, in which the reversing frame 55 is mounted on the turning center shaft 53 of the reversing frame 55 in the width direction of the tunnel 21 along a guide attached to the lifting frame 46. Attach a roller that can move 55,
A pinion 70 is mounted on the turning center shaft 53, and a rack 71 is fixed on the reversing frame 55 side.
A reversing drive device 7 such as a jack for moving the reversing frame 55 while reversing between the rotating shaft 6 and the turning center shaft 53.
2 is attached to form a reversing drive mechanism 59.

By doing so, the transport cart 31
Even if the rail 29 is not located at an intermediate position between the rails 28 and 30, the segment 20 can be inverted while correcting the position as shown in FIG.

Except for the above, the configuration is the same as that of the above embodiment, and the same operation and effect can be obtained.

It should be noted that the present invention is not limited to only the above-described embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

[0071]

As described above, according to the segment turn lifter for shield machine according to the present invention, when the segments are supplied to the segment assembling apparatus from the upper side, the segments can be lifted well. An excellent effect that it can be achieved.

[Brief description of the drawings]

FIG. 1 is an overall schematic side sectional view of a first embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;

4 is a view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a view taken in the direction of arrows VV in FIG. 4;

FIG. 6 is a view similar to FIG. 4 of a second embodiment of the present invention.

FIG. 7 is a view similar to FIG. 3 of a second embodiment of the present invention.

FIG. 8 is an overall schematic side sectional view of a conventional example.

[Explanation of symbols]

 Reference Signs List 20 segment 21 tunnel 23 shield excavator 36 segment turn lifter 42 turn lifter main body 45 segment passage hole 46 elevating frame 47 elevating drive mechanism 48 segment reversing device 49 segment pusher 53 turning center axis 55 reversing frame 56 keyhole-shaped gripping hole 57 segment member Stop fixture 58 Segment gripping device 59 Reverse drive mechanism 63 Position fixing mechanism 64, 65 Segment guide roller

Claims (4)

[Claims] 1. A gate-shaped turn lifter body (42) movable in accordance with the movement of a shield machine (23), and provided so as to be able to move up and down with respect to the turn lifter body (42). 21) a frame-shaped elevating frame (46) having a segment passage hole (45) large enough to pass the segment (20) directed in the width direction of 21);
An elevating drive mechanism (47) for driving the elevating frame (46) to elevate and lower, and a turning center axis (53) extending in the longitudinal direction of the tunnel (21) in the segment passage hole (45) of the elevating frame (46). , Segment (20)
Segment reversing device (4)
8) and a segment pusher (49) for sending out the segment (20) lifted by the lifting frame (46) to the upper part of the turn lifter main body (42). 2. A segment reversing device (48) is pivotally supported at its upper part by a lifting frame (46) so as to be reversible about a turning central axis (53) extending in the longitudinal direction of the tunnel (21). A reversing frame (55) and a keyhole-shaped gripping hole (56) attached to the reversing frame (55) and formed at the center of the inner peripheral surface of the segment (20).
Key-shaped segment locking fixture that can be inserted into and locked into the device (57)
The segment turn lifter for a shield machine according to claim 1, further comprising: a segment gripping device (58) having: a reversing drive mechanism (59) for reversing the reversing frame (55). 3. A position fixing mechanism (6) for fixing the position of the segment (20) on the upper surface of the reversing frame (55).
3. The segment turn lifter for a shield machine according to claim 2, wherein 3) is provided. 4. A segment guide roller (64) (65) for supporting the segment (20) on the upper surface of the reversing frame (55) and guiding the feed of the segment (20).
The segment turn lifter for a shield machine according to claim 2, further comprising: