JP2000220389A - Cotter driving device for cotter type segment connection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compactly constitute the cotter driving device so that the device can be inserted between an assembled segment and the pushing member of a propulsive jack. SOLUTION: This cotter driving device is provided with a holding and insertion means 76 for a cotter inserting a cotter pin 6A into a cotter hole 12A while projecting or retracting a cotter-holding arm 75 holding the cotter pin, a jack 205 which drives the cotter pin 6A inserted in the cotter hole 12 while driving a driving tool 207 from between cotter-holding arms, and a driving part-shifting means transferring the driving jack 205 in between the driving position F between cotter-holding arms 75 and the standby position E where nothing interferes in the projecting or retracting motion of the cotter-holding arms 75.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a segment assembled as a lining material in a tunnel excavated by a shield method, in which a cotter pin is provided in a joint direction between shield pieces in a circumferentially adjacent segment piece. The present invention relates to a cotter driving device of a cotter type segment fastening device which is driven and connected.

[0002]

2. Description of the Related Art For example, besides using bolts and nuts as a method of connecting segments, there is a method of connecting segment pieces to each other using a cotter. In this method, a connecting piece having a cotter groove is embedded in a fastening surface adjacent to a segment piece, the segment is positioned at an assembly position, and the connecting pieces are abutted to form a cotter hole by the cotter groove. Then, a cotter pin is driven into the cotter hole. In this connection method using a cotter pin, a vertical cotter type in which the cotter pin is driven in the radial direction is usually employed.In the case of this vertical cotter type, the cotter pin is driven again after a certain period of time after the connection and retightened. Although there is an advantage that work is possible, there is a problem that the connecting portion is weak against a radial load.

Therefore, in recent years, in addition to the vertical cotter method, a horizontal cotter method has been proposed in which a cotter pin is driven into a fastening portion of a segment piece adjacent in the circumferential direction in a shield axis direction.

[0004]

The horizontal cotter method is very promising in that a large strength can be ensured against a load in the radial direction of the shield, and furthermore, there are very few irregularities on the inner surface of the segment.

[0005] The horizontal cotter method has not been adopted until now because the space between the segment used as a reaction force receiving part of the propulsion and the pressing member driven out and back by the propulsion jack is narrow. Was difficult to hit.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and even if the space between the front end surface of the segment and the pressing member of the propulsion jack is narrow, the cotter pin is driven into the fastening portion of the adjacent segment in the circumferential direction to achieve good fastening. It is an object of the present invention to provide a cotter driving device for a cotter-type segment fastening device that can be used.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cotter hole in which segment pieces are butted against each other in an arc length direction on a fastening surface of a joint between pieces which are circumferentially adjacent to each other. A cotter driving device of a horizontal cotter type segment fastening device for arranging a plurality of pairs of connecting metal fittings, and driving a cotter pin into a cotter hole of each of the connecting metal fittings from the front end of the segment piece to fasten the segment piece. A plurality of cotter grasping arms capable of grasping and opening the cotter pin, moving back and forth in the shield axis direction to insert the cotter pin into the cotter hole, and the cotter pin inserted into the cotter hole to open the cotter pin. A cotter driving means for driving the driving tool from between the arms and a driving means for driving the cotter; And those provided with driving position between the cotter gripping arm, the driver shifting means driving shifting between a standby position that does not interfere with the projecting and retracting movement of the cotter gripping arms.

According to the above arrangement, the cotter grasping and inserting means for inserting the cotter pin into the cotter hole and the cotter driving means for driving the inserted cotter pin into the cotter hole are arranged, and the cotter pin is shifted by the driving means. The cotter is shifted to the driving position after being inserted into the cotter hole, and the cotter is driven by driving the driving tool from between the cotter gripping arms, so that the cotter gripping insertion means and the cotter driving means cross in the cotter driving direction. Can be arranged in the direction in which Therefore,
Even if the space between the front end face of the segment and the pressing member of the propulsion jack is narrow, the cotter pin can be carried into the piece-to-piece joint and driven sequentially. Further, since a plurality of sets of connecting metal fittings are provided on the fastening surface of the inter-piece joint portion and cotter pins are driven into each of them, the length of the cotter pins to be handled can be set short, which can contribute to downsizing of the cotter pin driving device.

According to a second aspect of the present invention, in the above structure, the cotter pin includes a flange portion fitted to each of the connecting fittings on which the two segment pieces are mounted, and a connecting portion connecting the flange portions to each other. The mutually facing inner surfaces of the flange portion are formed in a tapered surface inclined from the front outside to the rear inside along the driving direction, and in a direction in which the two connection fittings approach each other by the tapered surface of the cotter pin driven into the cotter hole. It is configured to be pressed and fastened.

[0010] According to the above configuration, the segment pieces adjacent in the circumferential direction can be firmly connected via the respective connection fittings, and a joint between pieces which is resistant to a load in the radial direction can be provided.

Further, according to a third aspect of the present invention, there is provided a gripper arm retreating device provided in the cotter gripper inserting / removing means for moving the cotter gripper arm in and out, and comprising an arm retracting frame for supporting the cotter gripper arm so as to be capable of opening and closing. A pair of egress / retraction sprockets arranged at intervals of a substantially insertion stroke on the side in the retraction direction, a drive sprocket rotated by an insertion drive motor, and both ends connected to an arm egress / retract frame to extend and retract the arm. And an insertion drive chain wound around the drive sprocket.

According to the above construction, the gripper arm retraction device is constituted by the sprocket and the insertion drive chain. Therefore, the gripper arm retraction device can be accommodated within the length of the approximate insertion stroke for the cotter gripper arm to retract. Thus, the cotter driving device can be made compact, and can be easily inserted into a narrow space between the front end surface of the segment and the pressing member of the propulsion jack.

Further, according to a fourth aspect of the present invention, in the above structure, there is provided a driving jig which is inserted into the cotter hole and used for driving the cotter pin, and the driving end of the driving jig is provided with a driving drive shift means. The cotter driving means shifts the cotter driving means to form a press-fit groove which can be fitted and disengaged, and a locking claw is formed in the press groove to prevent the driving jig from slipping out when pulled out.

According to the above configuration, by using the driving jig which can be inserted through the cotter hole of the rear connecting fitting,
By retracting the driving tool of the cotter driving means after driving, the driving tool can be prevented from falling into the pushing groove by the latching claw, and the driving tool can be pulled out from the cotter hole, making it possible to reuse the driving tool. It becomes possible. Further, by shifting the cotter driving means by the driving means shift means, the driving tool can be fitted in and disengaged from the pressing groove, so that the connection between the driving tool and the driving jig can be easily performed. .

According to a fifth aspect of the present invention, in the above structure, one of the cotter gripping arm and the cotter pin is formed with a gripping recess, and the other is formed with a gripping protrusion that can be fitted into the gripping recess. An inclined receiving surface inclined at a predetermined angle in four directions separated by 90 degrees is formed in the concave portion, and an inclined pressing surface to be applied to each inclined receiving surface is formed in the holding convex portion.

According to the above construction, when the cotter pin is gripped by the cotter gripping arm, the gripping concave portion and the gripping convex portion are fitted to each other, so that the cotter pin is kept at a fixed position by the action of the inclined receiving surface and the inclined pressing surface. The cotter pin can be held in a fixed posture, and the cotter pin can be accurately inserted into the cotter hole of the connection fitting.

According to a sixth aspect of the present invention, in the configuration of the first aspect, the driving device main body including the cotter gripping and inserting means, the cotter driving drive means, and the driving drive shift means is connected to the shaft center in the shield radial direction. A driving direction adjusting mechanism for tilting the cotter pin around so that the driving direction of the cotter pin corresponds to the joint between the inclined pieces is provided.

According to the above construction, the K-segment assembled at the end of the segment ring and the A-segment adjacent to the K-segment are formed by a joint between inclined pieces having a wedge angle whose fastening surface is inclined with respect to the axial direction of the shield. However, the driving direction adjusting mechanism can easily change the driving direction of the cotter pin corresponding to the joint between the inclined pieces.

According to a seventh aspect of the present invention, in the configuration of the sixth aspect, a plurality of fastening portions are provided at predetermined intervals in the shield radial direction in the joint between the pieces, and the driving device body corresponds to these fastening portions. A plurality of bases are disposed in the radial direction of the shield, and a driving position adjusting mechanism is provided which corresponds to a displacement of the fastening portion due to a clearance angle of a fastening surface of the joint portion between the inclined pieces by sliding the driving device body in a tangential direction. Things.

According to the above configuration, when a clearance angle is formed on the inclined fastening surface of the joint between inclined pieces having a wedge angle, and a plurality of fastening portions are provided in the radial direction, the plurality of fastening portions is The driving positions are shifted from each other in the tangential direction due to the clearance angle, but the driving position adjusting mechanism can easily cope with this by sliding the driving device body in the tangential direction.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cotter type segment fastening device according to the present invention will be described with reference to FIGS.

First, a fastening portion of a circular segment assembled in a tunnel having a circular cross section excavated by a shield machine will be described with reference to FIGS.

This segment 1 includes a shield machine 51
Is assembled by a segment assembling apparatus 52 disposed at the rear of the shield machine 51 as a lining material for a circular cross section tunnel excavated by a shield method using a segment piece 2 circumferentially divided into a plurality of pieces. Are connected circularly by an inter-piece joint 3 and assembled into a segment ring 4, and the segment rings 4 are connected by a plurality of inter-ring joints 5 to be assembled into a cylindrical shape.

The segment fastening device 53 according to the present invention comprises:
4 to 7 are provided in the segment assembling apparatus 52.
As shown in FIG.
A plurality of (two in this case) cotter pins 6A and 6B from a
Is driven backward along a substantially shield axis using one spacer 7 and a driving jig 8 to fasten the inter-piece joint portion 3.

The inter-piece joint portion 3 is provided with a pair of fastening portions 10 at a fastening interval R in the radial direction, and each of the fastening portions 10 has a cotter groove 12a having a T-shaped cross section.
A pair of connecting fittings 11A, 11A and 11B, 11B formed respectively are embedded in the front and rear at a fixed interval in the shield axial direction. Then, the segment pieces 2 are butted in the direction of the arc length, and the connecting fittings 11A, 11B
The cotter holes 12A and 12B having a substantially I or H section are formed by the cotter grooves 12a. Further, an opening insertion hole 13A through which the cotter pins 6A, 6B, the spacer 7, and the driving jig 8 can be inserted is formed between the front end face 2a of the segment piece 2 and the front connection fitting 11A by an insertion groove formed in the fastening surface, Furthermore, an intermediate insertion hole 13B through which the rear cotter pin 6B and the spacer 7 can be inserted is formed between the front connection metal 11A and the rear connection metal 11B by an insertion groove formed in the fastening surface.

The connecting fittings 11A and 11B are fixed to the segment piece 2 by anchoring bars, respectively.
The cotter holes 12A and 12B are formed in the flange space 12a.
Is formed on a tapered surface 12c that approaches the front side (rear in the driving direction). And FIG. 5 (a)
As shown in (c), the cotter hole 12A of the front connection metal fitting 12A is larger than the cotter hole 12B of the rear connection metal fitting 11B, and is formed so that the rear cotter pin 6A, the spacer 7, and the driving jig 8 can pass therethrough. .

As shown in FIGS. 5 (a) and 5 (c), the front cotter pin 6A and the rear cotter pin 6B respectively have an engaging portion 21 and a handle portion 22 attached to the base end side of the engaging portion 21. It is composed of The engaging portion 21 connects a pair of parallel flange portions 21a, 21a to the connecting portion 2.
The flanges 21a are formed in a tapered surface 21c which is formed in a substantially I- or H-shaped cross section connected by 1b, and which is inclined in such a direction that the distance between the inner surfaces of the flanges 21a approaches the front part (rear part in the driving direction). Further, a holding groove 23 having a V-shaped cross section and a holding concave portion 24 for holding and transporting the cotter pins 6A and 6B are formed on the outer surface of the flange portion 21a. Further, the handle portion 22 is formed to have a constant thickness continuous from the connecting portion 21b, and a detachment concave portion 25 is formed on the left and right side surfaces.

The front cotter pin 6A and the rear cotter pin 6B have different inner surface widths of the tapered surface 21c, and the rear cotter pin 6B on the rear side needs to pass through the opening insertion hole 13A of the front connection fitting 11A. The inner surface width of the tapered surface 21c is set larger than the front cotter pin 6A. Other parts are formed identically.

Further, as shown in FIG. 5 (b), the spacer 7 is constituted by a driving portion 31 which can pass through the front insertion groove 13A of the front connection fitting 11A, and a handle portion 32 attached to the rear portion. I have. And the driving part 31
A pair of flange portions 31a, 31a and a connecting portion 31b are formed into a substantially I-shaped or H-shaped cross section without a tapered surface. 6
B is formed in the same manner.

As shown in FIG. 5 (d), the driving jig 8 includes a driving portion 41 which can pass through the cotter hole 12A of the front connection metal 11A, and a handle portion 42 attached to the rear portion. ing. And the driving unit 41
A pair of flange portions 41a, 41a and a connecting portion 41b form a substantially I-shaped or H-shaped cross section without a tapered surface, and two connecting holes 46 are formed through the connecting portion 41b.
A holding groove 43 and a holding recess 44 having the same shape as the cotter pins 6A and 6B are formed. A push groove 45 and a pair of hooking claws 45a are formed at the rear end of the handle 42,
The driving jack 205 is moved along the direction of the arrow in FIG.
When (FIG. 23) is shifted, the driving tool 207 is formed so as to be able to be fitted into and disengaged from the pressing groove 45, and the hook 4 is formed.
After the driving jig 8 is driven by the driving jack 205 by 5a, the driving jack 207 is contracted, so that the driving tool 207 is prevented from falling out by the hooking claw 45a and the driving jig 8 can be pulled out.

Next, the segment assembling device 52 and the segment fastening device 53 will be described. As shown in FIGS. 2 and 3, the segment fastening device 53 includes a shield excavator 51.
The rear part is provided in a segment assembling device 52 for transporting and positioning the segment piece 2 to a predetermined position.
In the segment assembling apparatus 52, a turning frame 56 is rotatably supported about a shield axis O via a turning bearing 55 on a support wall 54 provided at a rear portion of the shield main body 51a. It is rotationally driven by a turning drive device 60 including a ring gear 57 provided on the turning frame 56 and a drive pinion 59 which meshes with the ring gear 57 and is driven to rotate by a turning drive motor 58. The revolving frame 56 includes a plurality of attitude adjusting cylinders, that is, a radially extending and retracting cylinder 61, a revolving fine adjustment cylinder 62, a yawing cylinder 63, a rolling cylinder 64, a sliding cylinder 67, and a pitching cylinder 68, respectively. A segment holding frame 65 whose posture is controlled by the guide device is provided, and the segment piece 2 is held by a segment holding device 66 provided on the segment holding frame 65. The segment fastening devices 53 are provided at both front portions of the segment holding frame 65. Reference numeral 67 denotes a propulsion jack for advancing the shield machine 51 as a reaction force receiver that presses the front end face of the assembled segment 1 against the pressing member 67a.

As shown in FIGS. 8 and 9, the segment fastening device 53 includes a case clamp device 72 for holding a plurality of sets of cotter members, that is, a mounting case 71 accommodating cotter pins 6A and 6B and a spacer 7. A cotter feeder 73 for taking out two cotter members 6A, 6B and 7 from the cotter case 71 held by the case clamp device 72 or two take-out jigs 8 contained therein and sequentially supplying them; It comprises a cotter driving device 74 that receives the cotter members 6A, 6B, 7 and the driving jig 8 from the supply device 73, inserts them into the fastening portion 10 of the inter-piece joint 3, and drives the cotter.

As shown in FIGS. 10 to 12, the mounting case 71 has front, rear, left and right side plates 81.
The cotter members 6A, 6B, 7 are inserted into a plurality of holding holes 82 formed in the storage plate 81c in a state penetrating therethrough, respectively. 13, and held by a cotter lock device 83 shown in FIG. Also, left and right side plates 81b
A pair of fixed blocks 84, 84 having an insertion guide space 85 formed in the center are opened and fixed at symmetric positions on the outer surface of the fixed block 84. The fixed blocks 84 have receiving portions protruding on both sides at the bottom side. And a delivery clamp 84b protruding to both sides on the top side. A locking hole 86 is formed in the front side plate 81a.

As shown in FIGS. 11 and 13, a case mounting window 121 of the supply unit frame 121 is attached to the case clamping device 72 provided in the segment fastening device 53.
A pair of insertion guide bodies 91 to be inserted into the insertion guide space 85 and a pair of two sets of case clamp devices 72 are arranged on the outer peripheral portion of the section a. These case clamp devices 7
Reference numeral 2 denotes a pair of two pairs of receiving clamp cylinders 93 capable of retracting the locking claws 73a onto the receiving clamp portions 84a and clamping the receiving clamp portions 84a with the supply portion frame 121; Locking cylinder 94 capable of rotating lever 94a to fit the tip into locking hole 86
It consists of.

On the other hand, as shown in FIG. 16, a case clamp device 95 for transferring a case carrying-in / out device (not shown) for mounting and removing the mounting case 71 to and from the case clamp device 72 of the segment fastening device 53, as shown in FIG. A case holding space 96 is formed between arm portions 97a of a case support frame 97 which can be freely moved toward and away from the device 53, and a pair of right and left clamps are formed on these arm portions 97a in correspondence with the sending clamp portions 84b of the fixed block 84. The levers 98, 98 are disposed rotatably about the support pins 98a, 98a.
The working end and the fixed end of the clamp cylinder 99 are connected to the passive end of the clamp cylinder 99, respectively. Therefore, the clamp cylinder 9
9, the clamp lever 98 is opened and closed about the support pin 98a, and the working end of each clamp lever 98 is fitted to the sending-out clamp portion 84b of the mounting case 1; It can be held at a fixed position within. As described above, the fixed blocks 84 provided on the case body 80 allow the case clamp device 72 disposed on the case mounting window 121a and the case clamp device 95 for delivery of the case carrying-in / out device to be safely and reliably connected. Can be delivered to the customer.

Next, the cotter lock device 83 will be described with reference to FIGS. Storage plate 81 for each holding hole 82
A storage frame 101, which has a storage space 101a surrounding the cotter members 6A, 6B, 7 formed on the back side from c, is formed in a U-shape in plan view.
A step portion 101b for restricting the push of the cotter members 6A, 6B, 7 is formed at the middle opposing position of 01a. A lock arm (rotating member) 104 is supported on both sides of the storage frame 101 via first support pins 102 so as to be openable and closable, and a locking end formed in an arc shape on the entrance side of the lock arm 104. 104a, the intermediate portion is the second support pin 1
The drive end of a guide lever (rotating member) 103 rotatably supported via a connecting pin 105a and a long hole 10
5b. Further, an arm biasing spring 107 for biasing toward the closing movement side from which the locking end portion 104a protrudes is connected to a passive end 104b on the back side of the guide lever 103, and the arm biasing spring 107 causes a lock arm. The locking end portion 104a of the projection 104 projects and is engaged with the holding concave portions 24, 34, 44 of the cotter members 6A, 6B, 7, and is prevented from falling off. However, since the locking end 104a is formed in a circular shape, the cotter members 6A, 6B, 7
When the push / pull force in the insertion / removal direction is applied to the arm, the locking end 104a is pushed out by the inclined surface of the holding concave portion 24, 34, 44 against the arm urging spring 107, and the lock arm 104 is opened, and the cotter is opened. The members 6A, 6B and 7 can be pushed and pulled out.

On the outer side of the guide lever 103, a restricting block 108 for restricting the opening movement of the lock arm 104 is slidable between a restricting position on the inlet side (A) and an open position on the inner side (A). The guide member 109 is disposed on the upper or lower surface of the storage frame 101.
The restriction block 108 is attached to a release member 109 slidably disposed in the insertion / removal direction via a. A compression spring 111 that urges the release member 109 toward the regulating position (A) is fitted to a guide rod 110 that is projected from the storage frame 101 in the insertion / removal direction and inserted into the guide hole 109b of the release member 109. Thus, the regulation block 108 is urged toward the regulation position (A).

Therefore, by pushing the release member 109 from the pushing end 109c to the back side against the compression spring 111, the regulating block 108 is slid from the regulating position (A) to the opening position (A), and the cotter member is further moved. 6A, 6
By pushing and pulling B and 7, gripping concave portions 24, 34 and 4 are formed.
4, the locking end 104a is pushed out and the lock arm 1
04 is opened, and the cotter members 6A, 6B, 7 can be pushed or pulled out.

Next, the cotter supply means 73 will be described with reference to FIGS.
This will be described with reference to FIGS. As shown in FIG. 8, FIG. 9, and FIG. 17, in the supply section frame 121 in which the mounting case 71 is held in the case mounting window 121a by the case clamp device 72, the transverse section frame 122 is attached in the direction of the arrow XX (shield tangent line). ), A traversing drive mechanism 125 provided on the traversing portion frame 122 and moving the traversing portion frame 124 in the arrow YY direction (shield axis direction), and a traversing portion. The turning drive mechanism 12 provided on the frame 124 and capable of turning the gripper frame 126 around a vertical axis along the arrow ZZ direction (shield radial direction) at least within a range of 90 degrees.
7 and an elevating drive mechanism 1 for elevating and lowering in an arrow ZZ direction
28 are provided, and the gripper frame 126
A supply gripping device 129 capable of gripping the cotter member is provided. 130 is a jig holding mechanism for holding the driving jig 8.

The supply unit frame 121 is formed in a rectangular box shape and has a case clamp device 72 on one side in the XX direction.
Is formed, and a cotter entrance 1 is provided on the face side along the arrow YY direction.
21b is formed.

The traversing drive mechanism 123 is connected to the supply unit frame 1.
21, a traversing rail 1 slidably supporting a traversing portion frame 122 via a linear guide 131.
32, a pair of left and right traversing screw shafts 134 provided on the supply unit frame 121 and rotationally driven by the traversing motor 133, and female screws provided on the traversing unit frame 122 and fitted to the traversing screw shafts 134, respectively. And a traversing screw shaft 134 by a traversing motor 133.
Can be rotated to move the traversing portion frame 122 in the direction of the arrow XX by the female screw member 135.

The traversing drive mechanism 125 is connected to the traversing section frame 1.
22, which is slidably supported on the vertical frame 124 via the linear guide 136.
37, a vertical screw shaft 139 provided on the horizontal frame 122 and driven to rotate by a vertical motor 138;
The vertical screw shaft 139 provided on the vertical frame 124.
And a female screw member 140 fitted to each of them, and the traversing screw shaft 139 is rotationally driven by the vertical motor 138 to move the vertical section frame 122 in the arrow YY direction by the female screw member 140. it can.

The turning drive mechanism 127 includes a turning portion frame 142 rotatably supported by a vertical portion frame 124 via a turning bearing 141, and a turning portion frame 142.
And a turning pinion 145 which is rotationally driven by a turning motor 144 provided on the longitudinal section frame 124 and meshes with the arc rack 143. The turning motor 144 The rotation pinion 145 is rotated to rotate the arc-shaped rack 143, and the supply gripping device 1 is turned via the turning portion frame 142.
29 can be turned 90 degrees (up to 180 degrees).

The lifting / lowering drive mechanism 128 includes
The lift rail 1, which is slidably supported by the holding unit frame 126 via the linear guide 147
48, an elevating screw shaft 151 provided on the revolving unit frame 142 and rotationally driven by an elevating motor 149;
A screw shaft 151 provided on the holding part frame 126 for elevating
The driving screw shaft 151 is driven to rotate by the motor 149 for raising and lowering, and the gripping frame 126 is moved by the female screw member 152 to the arrow Z-Z.
Can be moved in any direction.

The supply gripping device 129 is shown in FIGS.
4, as shown in FIG.
A pair of supply unit gripping arms 154 are supported by a pair of upper and lower support members 153 which are attached at intervals of the fastening interval R of the fastening unit 10 in the Z direction via support pins 155, respectively. Supply unit gripping arm 154
An arm opening / closing cylinder 156 is provided therebetween. Then, both ends of the operating member 157 attached to the output rod of the arm opening / closing cylinder 156 and the supply unit gripping arm 15
4, the opening / closing link 158 is connected to the connecting pin 159,
159, the supply unit gripping arm 154 is opened and closed via an opening / closing link 158 by driving the arm opening / closing cylinder 156 to move back and forth, and the cotter members 6A, 6
B, 7 and the driving jig 8 can be gripped and released. At the free end of the supply section gripping arm 154, the holding grooves 2 of the cotter members 6A, 6B, 7 and the driving jig 8 are provided.
3, 33, and 43, and the flange portions 21a, 31a, and 4 of the cotter members 6A, 6B, and 7, respectively.
A pair of gripping ribs 154b sandwiching the outer surface of 1a are formed, so that the cotter members 6A, 6B, 7 and the driving jig 8 can be reliably gripped. The support member 153 has a release member 1 provided on the mounting case 71.
An unlocking member 161 that pushes 09 from the pushing end 109c to the back side is attached.

Therefore, the horizontal drive mechanism 123, the vertical drive mechanism 124, the turning drive mechanism 127, and the elevation drive mechanism 12
8, the supply unit gripping arm 1 of the supply gripping device 129
54 and 154 are opposed to the target cotter pins 6A and 6B or the spacers 7, and are further approached to the mounting case 71 by the traversing drive mechanism 123, so that the unlocking member 161 pushes the release member 109 and the cotter pin 6B
The cotter lock device 83 is released, and the supply unit gripping arms 154 and 15 are further moved by the arm opening / closing cylinder 156.
4, the cotter pins 6A and 6B or the spacer 7 is gripped. Next, the cotter pins 6A, 6B or the spacers 7 are pulled out from the storage holes 82 by moving the supply part holding arms 154, 154 of the supply holding device 129 away from the mounting case 71 by the traversing drive mechanism 123. Further, 9 by the turning drive mechanism 127
After being inverted by 0 °, the supply gripping device 1 is driven by the traversing drive mechanism 123, the vertical driving mechanism 124, and the elevating drive mechanism 128.
29 is moved to move the supply unit gripping arms 154 and 154 so that the cotter entrance 121 of the supply unit frame 121 is moved.
b is delivered to the delivery position.

The jig gripping mechanism 130 is shown in FIGS.
As shown in FIG. 1, a support frame 162 attached to the cotter entrance 121b in the supply unit frame 121.
, A pair of linear rails 163 are disposed in the ZZ direction,
The linear guides 164A and 16
An inner peripheral side movable frame 165A and an outer peripheral side movable frame 165B are slidably provided via 4B. The inner peripheral side holding block 166A is attached to the inner peripheral side movable frame 165A with a fastening interval R of the fastening portion 10, and the outer peripheral side movable frame 165B is attached to the inner peripheral side movable frame 165B.
Outer peripheral holding block 1 with a fastening interval R between fastening portions 10
The inner and outer peripheral holding blocks 166A and 166B hold the pair of driving jigs 8 with a fastening interval R therebetween. Further, a pair of holding pins 16 that can be freely fitted into the holding holes 46 of the driving jig 8 are provided on the holding surfaces of the inner peripheral side holding block 166A.
7, a receiving hole 168 into which the tip of the holding pin 167 is fitted is formed on the gripping surface of the outer peripheral side holding block 166B. The inner peripheral side movable frame 165A is
The piston rod of the inner peripheral holding cylinder 169A attached to the upper rear part of the supply unit frame 121 is connected via a connecting member, and further the outer peripheral side movable frame 165B
The piston rod of the outer peripheral side holding cylinder 169B attached to the lower rear portion of the supply unit frame 121 is connected via a connecting member.

Therefore, when the driving jig 8 is used, the feed gripping device 129 is opposed to the jig gripping mechanism 130 by the traversing drive mechanism 123, the vertical drive mechanism 124, the turning drive mechanism 127, and the elevating drive mechanism 128. Then, the driving jigs 8, 8 are gripped by the supply unit gripping arms 154, 154. Then, the inner and outer peripheral holding cylinders 169A and 169B are respectively extended, and the inner and outer peripheral holding blocks 1 are extended through both movable frames 165A and 165B.
66A and 166B are separated from each other, and the holding pin 167 is separated from the holding hole 46 of the driving jig 8. Further, the supply holding device 129 is moved by the traversing drive mechanism 123 and the vertical drive mechanism 124 so that the supply unit holding arms 154, 15
The driving jigs 8, 8 gripped by the
It is transported to the delivery position of the first cotter entrance 121b.

When the use of the driving jig 8 is completed, the driving jigs 8, 8 taken out at the delivery position of the cotter entrance 121 b of the supply unit frame 121 are attached to the supply unit holding arm 1.
54, 154, the supply gripping device 129 is moved, and the driving jig 8 is moved to the inner and outer peripheral movable frames 165A, 165A.
65B, the inner and outer peripheral holding cylinders 16
9A and 169B are contracted, respectively,
5A and 165B, the inner and outer peripheral holding blocks 166
A and 166B approach each other, the holding pin 167 is fitted in the holding hole 46 of the driving jig 8, and the connecting portion 41b is held between the inner and outer holding blocks 166A and 166B.

Further, the cotter driving device 74 will be described with reference to FIGS. 6, 8, 9 and 22 to 27. The cotter driving device 74 receives and holds two cotter members 6A, 6B, 7 or two driving jigs 8 by a pair of cotter gripping arms 75, 75, and moves from the receiving position (insertion driving position D) to the mounting position C. After retreating,
From the receiving position A to the feeding position B facing the inter-piece fastening portion 3
In the radial direction of the shield. Next, the cotter gripping arms 75, 75 are protruded and moved in the axial direction of the shield to the insertion driving position D by the cotter gripping insertion means 76, and the cotter members 6A, 6B, 7 or the driving jig 8 are connected to the connection fitting 11A from the opening insertion hole 13A. Cotter hole 12A
Insert Then, as shown in FIGS. 24 and 25, the driving of the cotter gripping arm 74 is shifted from the standby position C which does not interfere with the retracting movement of the cotter gripping arm 74 to the insertion driving position D by the driving drive shifting means 78. Further, the cotter driving means 77 causes the driving tool 207 to protrude from between the cotter gripping arms 75, 75 so that the cotter members 6A, 6A can be driven.
B, 7 and the driving jig 8 are configured to be driven into the cotter holes 12A, 12B of the connecting fittings 11A, 11B.

The details of the cotter driving device 74 will be described below. The cotter grip insertion unit 76, the cotter driving unit 77, and the driving unit shift unit 78
As shown in FIGS. 8 and 22, the driving device main bodies 171A and 171B provided with
Two units are installed corresponding to 0 and 10 with a fastening interval R in the shield radial direction.

As shown in FIGS. 6A and 7A, the inter-piece connecting portion 4 of the segment piece 2 has a right-angle fastening surface parallel to the shield axis O and along the shield radial direction. are doing. However, among the segment pieces 2, the K segment piece 14, which is assembled last in the assembly process of the segment ring 4, has a trapezoidal front view as shown in FIGS. Is formed. That is, the K segment piece 14 has a wedge angle α with respect to the shield axis O, and the intersection of the left and right fastening surfaces extending toward the shield axis O is farther, parallel or separated from the shield axis O. An inclined fastening surface 14a having a clearance angle β with respect to the radial direction is formed to be trapezoidal. Also, on both sides of the K segment piece 71, the inclined fastening surfaces 1
A right-angle trapezoidal A-segment piece 16 having an inclined fastening surface 16a having an inclination angle corresponding to the wedge angle α and the clearance angle β is arranged corresponding to 4a. Therefore, the K segment piece 14 and the A segment piece 16
In the joint 15 between the inclined pieces, the inclined fastening surfaces 14a,
16a are abutted in the arc length direction with a wedge angle α and a clearance angle β, and in the drawing, for example, the wedge angle α is 12
And the clearance angle β is about 11 °.

The inclined fastening surfaces 14a, 16a of the inter-piece joint portion 15 are longer than the right-angled fastening surface of the inter-piece joint portion 2, and in order to obtain a uniform fastening force as with the right-angled fastening surface, The connection fitting 11A of the joint 15 between the inclined pieces,
11B may be arranged on the same circumference as the connecting fittings 11A and 11B of the joint 3 between pieces. However, if this is performed, the distance between the connecting fittings 11A and 11B will be longer than the connecting fittings 11A and 11B of the other inter-piece joint portion 3. Then, the driving distance by the segment fastening device 53 and the length of the spacer 7 need to be specially set only in the joint 15 between the inclined pieces.

In order to solve this, in this embodiment, as shown in FIGS. 6 (b) and 7 (b), the center of the segment pieces 2, 14, 16 in the width direction passes through the shield axis O. A fixed arrangement distance La about the intersections OA and OB between the orthogonal center plane C and the center lines of the cotter fittings 6A and 6B.
= Connecting fittings 11A and 11B are separated by Lb. Since the disposition distances La and Lb are set to be the same as the disposition distances between the connection fittings 11A and 11B of the other inter-piece joint portion 3 having a right-angled fastening surface, the cotter pin 6
A, 6B, the spacer 7, and the driving jig 8 can use the same member. The fastening device 15 includes driving device main bodies 171A and 171 arranged on the inner peripheral side and the outer peripheral side.
1B, only at the time of driving the joint 70 between the inclined pieces,
The cotter driving direction may be inclined by the wedge angle α, and shifted in the tangential direction by the circumferential deviation δ caused by the clearance angle β. Thus, the shield machine 5
Reference elements for position control and direction control, such as a driving position and a driving direction, by the segment fastening device 53 provided in 1 can be shared with other piece-to-piece joints 3, and the fastening strength is also equalized before and after. be able to.

Therefore, the driving direction adjusting mechanism 170 and the radial extension / retraction mechanism 180
The driving device main bodies 171A and 171B are provided via a driving position adjusting mechanism 181.

That is, the driving direction adjusting mechanism 170
As shown in FIGS. 8 and 22, the tilting arms 173 and 17 are provided on the supply unit frame 121 via the swivel bearings 172 and 172.
3 is rotatably supported around the axis in the radial direction of the shield, and the driving device bodies 171A and 171B are tilted by the wedge angle α by the tilting cylinder 174 connected between the supply unit frame 121 and the tilting arm 173. The driving direction of the cotter members 6A, 6B, 7 and the driving jig 8 can be adjusted.

As shown in FIG. 9, the radial extension / retraction mechanism 180 has a pair of extension / retraction rails 175 and 175 disposed on radial frames 173a and 173a connected between the distal ends of the tilting arms 173 and 173. An extension frame 176 is arranged on the extension rails 175 and 175 via a linear guide 176a so as to be movable in the shield radial direction. A pair of retracting racks 177, 177 attached to the radial frame 174, retracting pinions 178, 178 meshing with the retracting racks 177, 177, respectively, and the retracting pinions 17
Drive device 180 having drive motors 179, 179 for rotatingly driving motors 8, 178 via reduction gears, respectively.
Accordingly, the driving device main bodies 171A and 171B are configured to move back and forth between the cotter receiving position A and the cotter feeding position B facing the cotter entrance 121b of the feeding unit frame 121.

Further, as shown in FIGS. 8 and 22, the driving position adjusting mechanism 181 is provided on the inner peripheral side driving device main body via a first tangential direction guide device comprising a linear guide and a linear rail. 171A is slidably disposed on the inner peripheral side driving device main body 17
An outer peripheral side driving device main body 171B is slidably disposed in a predetermined range on 1A via a second tangential direction guiding device 183 composed of a linear guide and a linear rail.
Then, the side arm 1 suspended from the extension frame 176
76a, a first position adjusting cylinder 18 connected to the inner peripheral driving device main body 171A and slidable within a predetermined range.
4A and a second position adjusting cylinder 184 connected to the outer peripheral driving device main body 171B and slid in a predetermined range.
B is attached.

Two driving device main bodies 171A,
Since 171B has the same structure, only one of them will be described.
That is, as shown in FIGS. 23 and 24, the cotter grasping and inserting means 76 provided in the driving device main body 171A is
An arm extension / removal frame 193 slidably disposed in the axial direction of the shield via an insertion guide device 192 comprising a linear rail and a linear guide on the outer peripheral side of the main body frame 191, and a distal end side (a shaft) of the arm extension / removal frame 193. (Inside) a pair of cotter gripping arms 75, 75 arranged at predetermined intervals in the tangential direction and openable and closable about arm support pins 194, 194, between which the cotter gripping arms 75, 75 will be described later. Driving jack 2
The interval through which the driving tool 207 can pass is formed.

On the left and right outer portions of the arm retracting frame 193, a pair of arm opening / closing devices 195 and 195 each comprising an opening / closing cylinder 195a and a closing / closing cylinder 195b for opening and closing the cotter grip arm 75 are provided. Have been. Further, the main body frame 191 is provided with gripping arm retracting devices 199, 199 on both left and right sides of the arm retracting frame 193, and the gripping arm retracting devices 199 are spaced a little larger than the insertion stroke S. Pair of outgoing and exiting sprockets 1
96A, 196B and the sprockets 196A, 1
The drive sprocket 196C rotated by the insertion drive motor 197 between the 96B and the sprocket 1 for tension
96D and an insertion drive chain 198 having both ends connected to the arm retraction frame 193 and wound around these sprockets 196A to 196D. As shown in FIG. 27, the gripper arm retracting device 199 moves the cotter gripper arm 75 between the cotter mounting position C on the face side and the cotter transfer position (same as the insertion driving position D) on the inner side of the shaft. It can be reciprocated by the insertion stroke SI in the center direction. The gripping arm retreating device 199 is provided with the assembled segment piece and the pressing member 6 of the propulsion jack 67 of the shield machine 51.
7a into the limited space shown in FIG.
Since 71A and 171B are inserted, it is formed compact so as to be within the range of the insertion stroke SI of the arm extension / retraction frame 193.

Further, as shown in FIG. 26, the cotter member 6A,
6B, 7 and a holding protrusion 201 that fits into the holding recesses 24, 34, 44 of the driving jig 8 are formed. These gripping concave portions 24, 34, 44 have front and rear inclined receiving surfaces 24a, 24a inclined at approximately 45 ° in the front and rear direction, and left and right inclined mating surfaces 24b, 24 inclined at approximately 45 ° in the left and right direction on both left and right sides.
On the other hand, the gripping convex portion 201 of the cotter gripping arm 75 has left-right inclined pressing surfaces 201a, 201a respectively contacting the front-rear inclined surfaces 24a, and front-rear inclined pressing surfaces contacting the left-right inclined surfaces 24b, respectively. 201b, 2
01b are formed, and these inclined holding surfaces 201a, 201
1b, the cotter pins 6A, 6B can be positioned in the front-rear direction and the left-right direction, and can be grasped in an accurate position and posture, and the cotter members 6A, 6B, 7 and the driving jig 8 can be connected to the cotter hole 12A of the front connection fitting 11A. Can be inserted smoothly.

The cotter driving means 77 is provided in FIG.
As shown in FIG. 3 to FIG. 25 and FIG. The shift is performed between the standby positions E on the inner peripheral side. That is, the shift guide device 202 including the shift rail 202a and the linear guide 202b in the shield radial direction on both left and right sides of the main body frame 191.
, The shift frame 203 is slidably supported. The main body of a shift cylinder 208, which is a shift driving device, is attached to both sides of the shift frame 203, and its piston rod is connected to the main body frame 191 to form a driving drive shift means 78.

A driving jack 205 serving as a driving means for driving is slidably supported on the shift frame 203 within a predetermined range in the axial direction of the shield via a positioning guide device 204 comprising a linear rail and a linear guide. Between the receiving bracket 203a suspended from the shift frame 203 and the bracket 205a of the driving jack 205, the driving jack 205 is moved backward (by the positioning spring 206 fitted on the slide shaft 205b protruding from the bracket 205a). (Face side). Furthermore, this driving jack 20
5, a T-shaped driving tool 207 is attached to the output rod of the cotter member 6.
A, 6B, and 7 can be driven into each other, can be driven by fitting into the pushing groove 45 of the driving jig 8, and can be pulled out by the hooking claw 45a.

As shown in FIG. 23, positioning blocks 211 are provided on both sides of the driving jack 205 in the driving direction. On the other hand, the positioning recesses 212 and the engagement recesses 213 into which the positioning blocks (not shown) can be fitted at the insertion and driving positions D are provided on the inner surfaces of the bases of the arm retracting frame 193 and the cotter gripping arm 75.
Are formed. An L-shaped positioning stopper 212 is attached to the positioning recess.

Therefore, the cotter gripping arms 75, 7
5, the cotter members 6A, 6B, 7 and the driving jig 8 are gripped, and the driving motor 197 of the gripping arm retracting device 199 is started to drive the driving sprocket 1
The cotter grasping arms 75, 75 are moved from the cotter mounting position C to the insertion driving position D (cotter delivery position) by rotating the insertion driving chain 198 by rotating the 96C, and the cotter members 6A, 6B, 7 or the driving tool are moved. The tool 8 is inserted into the cotter hole 12A of the connection fitting 11A from the opening insertion hole 13A of the inter-piece joint portion 3. Next, the shift cylinder 208 is driven to slide the driving jack 205 from the standby position E to the driving position F,
The positioning block 211 is fitted into the positioning recess 212. Further, the gripping arm retracting device 199 is re-driven to slightly advance the arm retracting frame 193, so that the positioning block 2 is acted upon by the positioning spring 206.
11 is applied to the positioning stopper 212 to perform positioning. Further, the arm opening / closing device 195 is driven to open the cotter gripping arms 75, 75, and the engaging concave portion 213 formed at the base end portion is fitted to the positioning block 21, so that the cotter gripping arms 75, 75 and the driving jack 205 Is connected and fixed. Next, the driving jack 205 is extended, and the cotter member 6A, 6B, 7 or the driving jig 8 is moved by the driving tool 207 to the cotter hole 12A of the connection fitting 11A.
Can be driven into.

Next, the fastening operation by the segment fastening device 53 will be described step by step. 1. The support frame 97 holding the mounting case 71 by the supply unit clamping device 95 is moved closer to the supply unit frame 121 of the segment assembling device 53, and the mounting case 71 is carried into the case mounting window 121a and fixed to the insertion guide body 92. When the insertion guide space 85 of the block 84 is fitted, the receiving clamp cylinder 93 of the case holding means 72 is driven, and the locking claw 93a is projected and clamped by the receiving clamp portion 84a. At the same time, the locking lever 94a is fitted into the locking hole 86 by the locking cylinder. Then, the clamp lever 9 is moved by the clamp cylinder 99 of the transfer case clamp device 95.
8 is opened to release the fixed block delivery clamp portion 84, and the mounting case 71 is smoothly transferred from the support frame 97 to the supply portion frame 121.

2. During the operation in which the segment piece 2 is carried to a predetermined position and positioned by the segment assembling device 52, the segment fastening device 53 uses the drive mechanisms 123,
The supply gripping device 129 is moved by the rotation drive mechanism 127 and 124, the target cotter pin 6 B, 6 B of the mounting case 71 is gripped, pulled out from the mounting case 71, and the cotter entrance 121 of the supply unit frame 121 is pulled out.
b.

3. The cotter pins 6B, 6B are gripped by the cotter gripping arms 75, 75 of the cotter gripping insertion means 76 and are retracted to the mounting position C. When the positioning of the segment piece 2 is completed, the radial extension / retraction mechanism 1
The drive motor 179 of 80 is driven to move the driving device main body 171A, 171B to the outer peripheral side from the cotter receiving position A to the cotter feeding position B facing the inter-piece fastening portion 3.

4. When the driving of the cotter pins 6B, 6B is completed according to a procedure described later, the mounting case 7
1 and the jig gripping mechanism 130, the spacers 7 and 7, the driving jig 8, and the cotter pins 6 </ b> A and 6 </ b> A are sequentially taken out, transferred to the cotter driving device 74, and driven into the inter-piece joint portion 3. Thereby, the segment pieces 2 adjacent in the circumferential direction are firmly fastened. The driving jig 8 is returned to the jig holding mechanism 130 after use, and is reused.

5. In the case of the joint between inclined pieces 15, the driving direction of the cotter driving device 74 corresponds to the wedge angle α by the driving direction adjusting mechanism 170, and the first and second tilting parts shift by the driving position adjusting mechanism 181. Cylinders 184A and 184B are expanded and contracted to release the driving positions of the driving device main bodies 171A and 171B at the clearance angle β.
Δ.

Next, a method of fastening the inter-piece joint 3 by the cotter driving device 74 will be described with reference to FIGS. a. The cotter gripping arms 75, 75 receive the rear cotter pin 6B supplied by the cotter supply device 73, and the gripper arm retracting device 199 retracts the rear cotter pin 6B to the mounting position. Then, as shown in FIG. 30A, the driving device main bodies 171A and 171B are moved to a position facing the inter-piece fastening portion 3 by the radial direction retraction mechanism 180, and the rear cotter pin 6B is transferred.

Then, as shown in FIG. 30 (b), the cotter gripping arm 75,
75 is moved from the mounting position C to the insertion driving position D,
The rear cotter pin 6B is inserted from the opening insertion hole 13A into the entrance of the cotter hole 12A of the front connection fitting 11A. Further, the shift cylinder 2 of the driving unit shift means 78
At 08, the driving jack 205 is slid from the standby position E to the driving position F, and the cotter gripping arms 75, 75 are opened by the arm opening / closing device 195 to release the rear cotter pin 6B.

B. As shown in FIG. 30C, the driving jack 205 is extended, and the cotter member 6B is driven into the cotter hole 12A of the connecting fitting 11A by the driving tool 207. Further, after the cotter gripping arms 75 are closed, the driving jack 205 is retracted from the driving position F to the standby position E by the shift cylinder 208, and then the cotter gripping arms 75, 75 are retracted to the mounting position C. . Then, the driving device main bodies 171A and 171B are retracted to the corresponding positions of the cotter supply device 73 by the radial direction retraction mechanism 180, and the spacers 7 are received.

C. As shown in FIG. 30 (d), when the driving device main bodies 171A and 171B which have received the spacer 7 from the cotter feeder 73 at the cotter feed position A are moved to the cotter feed position B, as shown in FIG. 31 (e). Thus, the cotter gripping arm 75 is moved from the mounting position C to the insertion driving position D by the gripping arm retracting device 199,
The spacer 7 is moved from the opening insertion hole 13A to the front connection fitting 11A.
Is inserted into the cotter hole 12A. By inserting the spacer 7, the rear cotter pin 6B is pushed out from the cotter hole 12A toward the intermediate insertion hole 13B. Further, the driving jack 205 is slid from the standby position E to the driving position F by the shift cylinder 208 of the driving drive shift means 78.

D. Further, as shown in FIG. 31 (f), the cotter gripping arms 75, 7 are
When 5 is opened and the spacer 7 is released, the driving jack 205 is extended and driven into the cotter hole 12A of the connecting fitting 11A by the driving tool 207. This allows
The rear cotter pin 6B is pushed out into the intermediate insertion hole 13B. Further, by the same operation, the driving jack 205 is retracted from the driving position F to the standby position E, and then the cotter gripping arms 75, 75 are retracted to the rear mounting position C. Then, the driving device main bodies 171A and 171B are retracted to the corresponding positions of the cotter supply device 73 by the radial direction retracting mechanism 180, and receive the driving jig 8 taken out from the jig holding mechanism 130.

E. As shown in FIG. 31 (g), when the driving device main bodies 171A, 171B received by the driving jig 8 at the cotter receiving position A are moved to the cotter feeding position B, as shown in FIG. Grasping arm retraction device 1
With 99, the cotter gripping arm 75 is moved from the mounting position C to the insertion driving position D, and the driving jig 8 is inserted from the opening insertion hole 13A into the cotter hole 12A of the front connection metal fitting 11A. By inserting the driving jig 8, the spacer 7
The tip of the rear cotter pin 6B is inserted into the cotter hole 12 of the rear connection fitting 11A through the hole. Next, the driving jack 205 is slid to the driving position, the cotter gripping arms 75 are opened, and the driving jig 8 is released.

F. Further, as shown in FIG. 32 (i), when the driving jack 205 is extended and the driving jig 8 is driven by the driving tool 207, the rear cotter pin 6B is inserted through the spacer 7 into the cotter hole of the rear connecting metal 11B. 1
It is driven into 2B. Thus, the rear connection fittings 11B, 11B are firmly fastened by the action of the tapered surface 21c of the rear cotter pin 6B.

G. Next, as shown in FIG. 32 (j), when the driving jack 205 is contracted, the driving tool 207 is engaged with the hooking claw 45 in the pressing groove 45, so that the driving jig 8 is inserted before driving. It is returned to the driving position. Further, as shown in FIG.
The driving jig 8 is gripped by the grippers 5 and 75, and the cotter gripping arm 75 is returned from the insertion driving position D to the mounting position C by the gripping arm retracting device 199. The driving device main body 171A, 171B is driven by the radial direction retracting mechanism 180.
Is retracted from the cotter feeding position B to the cotter receiving position A to the corresponding position of the cotter feeding device 73, and the driving jig 8 is moved.
Is returned and the front cotter pin 6A is further received.

H. As shown in FIG. 33 (l), when the front cotter pin 6A received from the cotter feeding device 73 is moved to the cotter feeding position B, as shown in FIG. The grip arm 75 is moved from the mounting position C to the insertion driving position D, and the front cotter pin 6A is inserted from the opening insertion hole 13A into the cotter hole 12A of the front connection fitting 11A. Further, the driving jack 205 moves from the standby position E to the driving position F.
Will be slid.

I. As shown in FIG. 33 (n), when the cotter gripping arms 75, 75 are opened by the arm opening / closing device 195 and the cotter pin 6A is released, the driving jack 205 is extended and the driving tool 207 causes the cotter of the front connection metal fitting 11A. It is driven into the hole 12A. Thereby, the front connection fittings 11A, 11A are firmly connected by the action of the tapered surface 21c of the front cotter pin 6a.

According to the above-described embodiment, the cotter members 6A, 6B, 7 are supplied from the mounting case 71 loaded with the plurality of cotter members 6A, 6B, 7 by the cotter supply device 73.
Are sequentially taken out and passed to the cotter driving device 74, which causes the cotter members 6A, 6B, 7
Of the cotter members 6A, 6B, 7 which are relatively heavy.
Can be efficiently supplied via the mounting case 71.

The driving jig 8 is provided in the supply frame 121 via a jig holding mechanism 130 so that the driving jig 8 can be used repeatedly. Member 6
A, 6B, and 7 are taken out and supplied to the cotter driving device 74, and the delivery of the driving jig 8 is performed between the jig holding mechanism 130 and the cotter driving device 74. The cotter members 6A, 6B and 7 and the driving jig 8 are sequentially supplied in a short time, and the cotter members 6A, 6B and 7 are smoothly supplied directly or via the driving jig 8 to the fastening portion 10 of the inter-piece joint portion 3. , And the work time required for fastening can be reduced.

Further, the cotter members 6A, 6B, 7 loaded in the mounting case 71 can be reliably held by the cotter lock device 83, and the displacement fluctuation of the mounting case 71 due to the conveyance and the change of the posture of the segment fastening device 53 can be prevented. The cotter members 6A, 6B, and 7 can be prevented from falling off even if there is, and the lock release member 161 of the supply gripping device 129 can be used.
The cotter lock device 83 can be released via the release member 109, and the cotter members 6A, 6B, 7 can be easily taken out by the supply unit gripping arm 154.

Further, the lock arm 1 which is a rotating member
04 and guide lever 103 connected to locking end 10
4a is urged toward the projecting side by the arm urging spring 107,
Restriction block 10 for restricting retraction of guide lever 103
8, the cotter members 6A, 6B, 7 can be prevented from coming off, and the cotter members 6A, 6B, 7 can be securely held with a simple configuration.
Can be released simply by moving the cotter members 6A, 6B, and 7, so that the cotter members 6A, 6B, and 7 do not come out unless the cotter members 6A, 6B, and 7 are pushed and pulled. The cotter members 6A, 6B, 7 can be stably conveyed and supplied without falling off.

Further, since the receiving clamp portion 84a and the sending clamp portion 84b are provided on both sides of the fixed block 84 fixed to the opposite side surface of the case body 80 of the mounting case 71, the segment fastening device 53 and the case carry-in / out are provided. The mounting case 71 can be safely and reliably transferred to and from the device via the fixed block 84.
1 and the structure of the clamp devices 72 and 95 can be simplified.

Further, the cotter members 6A, 6B, 7 and the driving jig 8 are inserted through the opening insertion holes 13A into the front connecting metal fittings 11A.
A cotter gripping and inserting means 76 for inserting the cotter holes 12A into the cotter holes 12A and a cotter driving means 77 for driving the cotter members 6A, 6B, 7 and the driving jig 8 into the cotter holes 12A, 12B are arranged in the shield radial direction. The driving jack shift 205 is driven from the standby position E to the driving position F by the driving driving unit shift means 78.
And the driving tool 2 is driven by the driving jack 205.
07 is driven to protrude from between the cotter gripping arms 75, 75 to drive the cotter members 6A, 6B, 7 and the driving jig 8, so that the cotter gripping insertion means 76 and the driving jack 205 are moved in the cotter driving direction. Intersecting shields can be placed radially. Therefore, the front end face 2a of the segment piece 2 and the propulsion jack 6
7, the cotter pins 6A and 6B can be sequentially loaded and driven into the inter-piece joint portion 3 even if the space between the cotter pins 6A and 6B is small. In addition, since a plurality of sets of connecting fittings 11A and 11B are provided on the fastening surface of the inter-piece joint portion 3 and the cotter pins 6A and 6B are driven into each of them, the length of the cotter pins 6A and 6B to be handled can be set short. This can contribute to downsizing of the cotter pin driving device 74.

Further, the segment pieces 2 which are adjacent in the circumferential direction can be firmly connected to each other by the cotter pins 6A and 6B having the I or H-shaped cross section through the respective connection fittings 11A and 11B, and are resistant to radial loads. A piece-to-piece joint 3 can be provided.

Further, the cotter gripping arms 75, 7
5 is moved from the mounting position C to the insertion and driving position D by the gripper arm retracting device 199.
196D, the insertion drive chain 198, and the extension / retraction drive motor 197, the gripper arm retraction device 199 can be accommodated before and after the length range of the approximate insertion stroke S where the cotter gripper arm 75 reciprocates. , The cotter driving device 74 can be made compact and the segment piece 2
Can be easily inserted into the narrow space between the front end surface 2a of the propulsion jack 67 and the pressing member 97a of the propulsion jack 67.

Also, the cotter hole 1 of the rear connection fitting 11A is formed.
By using the driving jig 8 through which 2A can be inserted,
The cotter pin 6B can be easily driven into the cotter hole 12B of the rear connection fitting 11B. Further, after the driving, the driving tool 207 of the driving jack 205 is retracted, so that the driving tool 8 is prevented from falling into the pressing groove 45 by the locking claw 45a, and the driving jig 8 can be pulled out from the cotter hole 12A. Further, the driving tool 207 can be easily fitted into and disengaged from the pressing groove 45 by shifting the driving jack 205 between the standby position E and the driving position F by the driving drive shifting means 78. Mounting of the jig 8 is also facilitated.

When the cotter members 6A, 6B, 7 and the driving jig 8 are gripped by the cotter gripping arms 75, 75,
1 is fitted into the gripping recesses 24, 34, 44, so that the inclined receiving surfaces 24a, 24b and the inclined pressing surfaces 201a,
By the action of 201b, the cotter members 6A, 6B, 7 and the driving jig 8 can be held in a fixed position and in a fixed posture, and the cotter members 6A, 6B, 7 and the driving jig 8 can be held in the cotter hole 12A of the front connection metal 11A. Can be inserted accurately.

In the above embodiment, the cotter pin and the cotter hole have a substantially I-shaped or H-shaped cross section. However, as shown in FIG. 34, the connecting portions 302 and 312 and the flange portions 303 and
The cotter pin 301 and the cotter hole 310 (the spacer and the driving jig also have the same cross section) can be formed of a channel-shaped cross section having the inner surfaces of the flange portions 303 and 313 having tapered surfaces 303a and 313a.

[0092]

As described above, according to the first aspect of the present invention, the cotter gripping / inserting means for inserting the cotter pin into the cotter hole, and the cotter driving means for driving the inserted cotter pin into the cotter hole. The cotter pin is shifted to the driving position after the cotter pin is inserted into the cotter hole by the driving means shift means, and the cotter is driven by driving the driving tool from between the cotter gripping arms. The insertion means and the cotter driving means can be arranged in a direction crossing the cotter driving direction. Therefore, even if the space between the front end face of the segment and the pressing member of the propulsion jack is narrow, the cotter pin can be carried into the piece-to-piece joint and driven sequentially. Further, since a plurality of sets of connecting metal fittings are provided on the fastening surface of the inter-piece joint portion and cotter pins are driven into each of them, the length of the cotter pins to be handled can be set short, which can contribute to downsizing of the cotter pin driving device.

Further, according to the second aspect of the present invention, the segment pieces adjacent in the circumferential direction can be firmly connected via the respective connection fittings, and a joint between pieces which is strong against a radial load is provided. be able to.

According to the third aspect of the present invention, the gripper arm retreating device is constituted by the sprocket and the insertion drive chain, so that the gripper arm retreats within the length of the approximate insertion stroke at which the cotter gripper arm retreats. The device can be accommodated, the cotter driving device can be made compact, and it can be easily inserted into a narrow space between the front end surface of the segment and the pressing member of the propulsion jack.

Further, according to the fourth aspect of the present invention,
By using a driving jig that can be inserted through the cotter hole of the rear connection metal, the driving tool of the cotter driving mechanism is retracted after driving, and the driving tool is prevented from falling into the pressing groove by the locking claw and driven. The jig can be pulled out from the cotter hole, and the driving jig can be reused. Further, by shifting the cotter driving means by the driving means shift means, the driving tool can be fitted in and disengaged from the pressing groove, so that the connection between the driving tool and the driving jig can be easily performed. .

According to the fifth aspect of the present invention, when the cotter pin is gripped by the cotter gripping arm, the gripping concave portion and the gripping convex portion are fitted to each other, so that the cotter pin is operated by the inclined receiving surface and the inclined pressing surface. Can be held in a fixed position and in a fixed posture, and the cotter pin can be accurately inserted into the cotter hole of the connection fitting.

According to the sixth aspect of the present invention, the K-segment assembled at the end of the segment ring and the A-segment adjacent thereto have wedge angles whose fastening surfaces are inclined with respect to the shield axial direction. Although it is fastened by the joint between inclined pieces, the driving direction adjusting mechanism can easily change the driving direction of the cotter pin corresponding to the joint between inclined pieces.

According to the seventh aspect of the present invention, when a clearance angle is formed on the inclined fastening surface of the joint between inclined pieces having a wedge angle and a plurality of fastening portions are provided in the radial direction, a plurality of fastening portions are provided. The fastening portion is displaced in the tangential direction from the driving position by the clearance angle, but the driving device body is slid in the tangential direction by the driving position adjusting mechanism,
This can be easily accommodated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a segment fastened by a cotter type segment fastening device according to the present invention.

FIG. 2 is a side view showing a segment assembling apparatus having the cotter type segment fastening device.

FIG. 3 is a rear view showing a segment assembling apparatus having the cotter type segment fastening device.

FIG. 4 is a perspective view showing an inter-piece joint and a cotter member fastened by the cotter-type segment fastening device.

5 (a) to 5 (d) each show a cotter member used by the cotter type segment fastening device,
(A) is a perspective view of a rear cotter pin, (b) is a perspective view of a spacer, (c) is a perspective view of a front cotter pin,
(D) is a perspective view showing a spacer.

6 (a) and 6 (b) each show a piece-to-piece joint portion to be fastened by the cotter type segment fastening device,
(A) is a cross-sectional plan view showing a normal joint between pieces,
(B) is a plane sectional view showing a joint between inclined pieces.

FIGS. 7 (a) and 7 (b) each show a piece-to-piece joint portion which is fastened by the cotter type segment fastening device;
(A) is a front view which shows the normal joint between pieces, (b) is a front view which shows the joint between inclined pieces.

FIG. 8 is a partially cutaway side view showing the cotter-type segment fastening device.

FIG. 9 is a plan sectional view showing the cotter type segment fastening device.

FIG. 10 is a perspective view showing a mounting case used in the cotter type segment fastening device.

FIG. 11 is a front view showing a case clamp device of the cotter type segment fastening device.

FIG. 12 is a side view showing a mounting case and a supply gripping device of the cotter type segment fastening device.

FIG. 13 is a side view showing a mounting case and a case clamp device of the cotter type segment fastening device.

FIG. 14 is a plan sectional view showing a cotter lock device of the cotter type segment fastening device.

FIG. 15 is a plan view showing a cotter lock device of the cotter type segment fastening device.

FIG. 16 is a front view showing a delivery case clamp device for delivering a mounting case to the cotter type segment fastening device.

FIG. 17 is a front sectional view showing cotter supply means of the cotter type segment fastening device.

FIG. 18 is an enlarged plan view showing a supply holding device of the cotter supply means.

19 (a) to 19 (c) each show a jig gripping mechanism of the cotter supply means, (a) is a side view showing an upper elevating member, (b) is a side view showing an upper elevating member, (c) is a side view showing the jig gripping mechanism combining the upper and lower elevating members.

FIG. 20 is a plan view showing a jig gripping mechanism of the cotter supply means.

FIGS. 21 (a) to 21 (c) each show a jig gripping mechanism of the cotter supply means, (a) is a front view showing a lower elevating member, (b) is a front view showing a lower elevating member, (c) is a front view showing the jig gripping mechanism combining the upper and lower elevating members.

FIG. 22 is an overall rear view showing the cotter driving device of the cotter-type segment fastening device.

FIG. 23 is a plan sectional view showing a cotter grasping insertion unit and a cotter driving unit of the cotter driving device.

FIG. 24 is a partial rear cross-sectional view showing a drive unit shift mechanism of the cotter type segment fastening device.

FIG. 25 is a plan sectional view showing a drive unit shift mechanism of the cotter type segment fastening device.

FIG. 26 is a partial perspective view showing a fitting portion between a tip portion of a cotter gripping arm and a cotter member of the cotter driving device.

FIG. 27 is a schematic side sectional view showing the cotter driving device.

FIG. 28 is an overall plan view of a segment ring showing a K segment piece fastened by the cotter type segment fastening device.

FIG. 29 is an overall front view of a segment ring showing a K segment piece fastened by the cotter type segment fastening device.

30 (a) to (d) are explanatory views showing a fastening procedure by the cotter type segment fastening device.

31 (e) to (h) are explanatory views showing a fastening procedure by the cotter type segment fastening device.

FIGS. 32 (i) to (k) are explanatory views showing a fastening procedure by the cotter type segment fastening device.

[FIG. 33] (l) to (n) are explanatory views each showing a fastening procedure by the cotter type segment fastening device.

FIG. 34 is a perspective view showing another embodiment of the cotter pin and the connection fitting used in the cotter-type segment fastening device.

[Explanation of symbols]

 Reference Signs List 1 segment 2 segment piece 3 inter-piece joint 4 segment ring 5 inter-ring joint 6A, 6B cotter pin 7 spacer 8 driving jig 10 fastening portion 11A. 11B Connection fittings 12A, 12B Cotter hole 13A Opening insertion hole 13B Intermediate insertion hole 14 K segment 15 Joint between inclined pieces 16 A segment 24, 34, 44 Gripping concave part 24a Front and rear inclined receiving surface 24b Left and right inclined receiving surface 45 Push groove 45a Stop claws 51 Shield excavator 52 Segment assembling device 53 Segment fastening device 67 Propulsion jack 71 Mounting case 72 Case clamp device 73 Cotter feeding device 74 Cotter driving device 75 Cotter gripping arm 76 Cotter gripping insertion means 77 Cotter driving drive unit 78 Driving driving unit Shift means 83 cotter lock device 103 guide lever 104 lock arm 104a locking end 107 arm urging spring 108 regulating block 109 lock release member 129 supply gripping device 130 Tool gripping mechanism 154 Supply unit gripping arm 170 Driving direction adjusting mechanism 180 Radial retracting mechanism 181 Driving position adjusting mechanism 199 Gripping arm retracting device 201 Gripping convex part 201a Front and rear inclined pressing surface 201b Left and right inclined pressing surface 205 Driving jack 207 Driving tool A cotter receiving position B cotter feeding position C mounting position D insertion driving position E standby position F driving position

Claims (7)

[Claims] 1. A plurality of sets of a pair of connecting metal fittings which are butt-joined in an arc length direction to form a cotter hole are provided on a fastening surface of a joint between pieces in which segment pieces are circumferentially adjacent to each other. A cotter driving device of a cotter-type segment fastening device for fastening a segment piece by driving a cotter pin into a cotter hole of each of the connection fittings from a front end, wherein a plurality of cotter gripping arms capable of gripping and releasing the cotter pin are connected to a shield axis. A cotter gripping insertion means for moving back and forth in the direction to insert the cotter pin into the cotter hole, and a cotter driving means for driving the driving tool from between the opened cotter gripping arms and driving the cotter pin inserted in the cotter hole, and The cotter driving means is connected to the driving position between the cotter grip arms and the cotter grip. Cotter driving device as cotter-type segment fastening device, characterized in that a driver shifting means implantation for shifting between a standby position that does not interfere with the projecting and retracting movement of the arm. 2. A cotter pin comprising: a flange portion fitted to a connection fitting on which both segment pieces are mounted;
The flange portion is formed of a connecting portion that connects the flange portions to each other, and the inner surfaces of the flange portions facing each other are formed on a tapered surface that is inclined from the front outside to the rear inside along the driving direction, and the cotter pin of the cotter pin driven into the cotter hole is formed. 2. The cotter driving device for a cotter-type segment fastening device according to claim 1, wherein the two connection fittings are pressed and fastened in a direction approaching each other by a tapered surface. 3. A gripping arm retraction device provided on the cotter gripping insertion means for reciprocating the cotter gripping arm is provided at a side of the arm retraction frame for supporting the cotter gripping arm so that it can be opened and closed. A pair of egress / retraction sprockets arranged at intervals of an insertion stroke, a driving sprocket rotated by an insertion driving motor, and both ends connected to an arm egress / retraction frame and wound around the egress / retraction sprocket and the driving sprocket. 3. A cotter driving device for a cotter-type segment fastening device according to claim 1, wherein said cotter driving device comprises a tensioned insertion drive chain. 4. A driving jig which is inserted into a cotter hole and is used for driving a cotter pin, and is fitted and disengaged at the rear end of the driving jig by a shift movement of the cotter driving means by a driving means shift means. The cotter type segment fastening device according to any one of claims 1 to 3, wherein a free pressing groove is formed, and a locking claw is formed in the pressing groove to prevent the driving jig from slipping out when the driving jig is pulled out. Cotter driving device. 5. A gripping concave portion is formed on one of the cotter gripping arm and the cotter pin, and a gripping convex portion is formed on the other side of the gripping concave portion so as to be fittable. The cotter segment according to any one of claims 1 to 4, wherein an inclined receiving surface is formed, and an inclined pressing surface that is applied to each of the inclined receiving surfaces is formed on the holding convex portion. A cotter driving device for fastening devices. 6. A driving device main body including cotter gripping / inserting means, cotter driving means, and driving means shift means is tilted around an axis in a radial direction of a shield so that a driving direction of the cotter pin is changed to a joint between inclined pieces. 2. A cotter driving device for a cotter-type segment fastening device according to claim 1, further comprising a driving direction adjusting mechanism corresponding to the following. 7. A plurality of fastening portions are provided at predetermined intervals in the shield radial direction at the joint between the pieces, and a plurality of driving device bodies are provided in the shield radial direction corresponding to these fastening portions. 7. A cotter-type segment fastening according to claim 6, further comprising a driving position adjusting mechanism which slides the main body in a tangential direction and adjusts a displacement of the fastening portion due to a clearance angle of the fastening surface of the joint between the inclined pieces. Device cotter driving device.