JPH09195693A - Segment assembling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a segment to be promptly assembled in parallel to the shield excavating using a simply construction by moving a segment holding device backward in the tunnel axial direction with respect to a swing device in the same distance as the distance of a shield body when it is moved forward. SOLUTION: When a shield body 1 excavates forward in the tunnel axial direction and move by the specific distance with respect to a circularity holder 120, the tube 111 of a both rod type cylinder 110 moves to the working face side. Oil consequent upon the moving distance of the shield body 1 flows into the tube 101 of a both rod type cylinder 100. By the pressure at this time, the tube 101 moves to the pit mouth side and a slider 34 moves to the pit mouth side with respect to an arm 32.1 Therefore a lifting beam 37 can always be kept to a segment assembly position P while the shield body 1 is excavating thereby allows a segment 6 to be assembled promptly in parallel to the excavation of the shield body 1 without deteriorating the positioning precision of the segment 6 at the time of segment assembly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment assembling apparatus provided on a shield machine, and more particularly to a segment assembling apparatus suitable for assembling segments in parallel with the excavation of the shield machine.

[0002]

2. Description of the Related Art As is well known, there is a shield construction method as a tunnel construction method. As this shield construction method, for example, a shield excavator is used while excavating the ground with a cutter installed at the tip of the shield excavator. There is a method of advancing and assembling the segments in an annular shape for taking progressive reaction force behind the shield machine with the advance.

Since the segments are usually assembled by an erector attached to the rear part of the shield body of the shield machine, the shield machine cannot excavate while the segments are assembled by the erector, and during excavation. Unable to assemble segment.

Therefore, some proposals have been made to speed up tunnel construction by carrying out excavation of a shield machine and assembly of segments in parallel. For example, JP-A-63-32100 (hereinafter, referred to as the first
(Referred to as "conventional technology") is proposed in which a double circular retainer is attached to the deck extending rearward from the pillar of the shield main body so as to be capable of reciprocating, and an erector is attached to the front device of these circular retainers. ing.

Further, in Japanese Laid-Open Patent Publication No. 4-149396 (hereinafter, referred to as the second prior art), a front fixed support leg and a reaction force support are provided from a front part to a pedestal installed adjacent to the shield main body in a separated state. Attach the legs and rear fixed support legs,
It is proposed that an erector is attached to the front of the fixed front support legs of the gantry.

Further, in JP-A-4-327699 (hereinafter referred to as the third prior art), a rearward axial cylinder is fixed to the central part of the rear part of the shield machine, and a segment assembly operation is performed on the axial cylinder. A method has been proposed in which a front erector that performs the operation and a rear erector that performs a segment gripping and conveying operation are disposed so that they can come in contact with and separate from each other, and a segment is assembled by the pair of front and rear erectors while the shield machine is being advanced.

[0007]

However, the above-mentioned prior art has the following problems. First, in the first prior art, the general concept of a perfect circle retainer is a device that pushes up an existing segment ring that is going to be deformed laterally due to its own weight or earth pressure in the vertical direction and holds it in a perfect circle. , Usually, it is reciprocally supported via wheels on a deck extending rearward from the pillar of the shield body. The following problems occur when the rectifier is attached to such a perfect circular cage.

(1) Since two sets of perfect circular cages are provided, it is necessary to re-tack the perfect circular cages in order to move them forward. It takes time.

(2) When assembling the segment by the erector, the assembled segment is positioned and assembled at a desired position in accordance with the assembled shape of the existing segment ring. Since it is performed for each ring in accordance with the excavation, the segment assembly center position is easily misaligned, and in this case, the assembly segment cannot be accurately positioned at a desired position.

(3) At the time of segment assembly, the assembly reaction force acts on the erector in all directions. However, since the normal perfect circular cage does not receive the reaction force in the lateral direction (left and right), the rigidity in the lateral direction is low. For this reason, when assembling the lateral segments, it becomes difficult to position the assembly segment at a desired position with high accuracy as in the above case.

Further, in the second prior art, three support legs such as a front fixed support leg, a reaction force support leg, and a rear fixed support leg similar to the perfect circular holder of the first prior art are attached to the mount. Therefore, it is necessary to re-tack these jacks, and the same problems as those of the above-mentioned first prior art (1) and (2) occur.

Further, in the third prior art, while the shield machine is excavating, the pair of front and rear erectors are moved backward at the same speed in accordance with the excavation speed thereof, so that the pair of front and rear erectors are always moved. It is necessary to maintain it at a predetermined position, and in order to realize this, the configuration of the erector and its control system are considerably complicated.

It is an object of the present invention to provide a segment assembling apparatus which can accurately and promptly assemble a segment in parallel with the shield excavation, has a simple structure and does not require complicated control.

[0014]

In order to achieve the above object, the present invention provides a segment provided in a shield machine, which is positioned and assembled at a predetermined position in a tunnel in parallel with the excavation of the shield machine. In the assembly device, a turning device that is attached to the shield body of the shield machine so as to be able to turn around a tunnel axis, and a segment holding device that is attached to the turning device so as to be movable in the tunnel axis direction and that holds the segment, When the shield body moves forward in the tunnel axis direction, the tuning drive means moves the segment gripping device backward in the tunnel axis direction with respect to the turning device by the same amount as the movement amount.

In the segment assembling apparatus of the present invention constructed as described above, when the shield main body moves forward in the tunnel axial direction, the tuning drive means moves the segment gripping device by the same amount as the moving amount with respect to the turning device. By moving the shield body backward in the axial direction of the tunnel, the position change of the shield body is replaced by the relative position change between the segment gripping device and the swivel device, which eliminates the need to attach the swivel device to the perfect circle holder or similar device as in the past. However, the segment gripping device is kept at the predetermined axial position in the tunnel regardless of the excavation of the shield body, which allows the segment assembly to be performed in parallel with the shield excavation without lowering the segment positioning accuracy during segment assembly. Can be done quickly. Also, since the change in the position of the shield body is simply replaced by the change in the relative position between the segment gripping device and the turning device, the structure is simple compared to the conventional one that has a pair of front and rear erectors, and complicated control is possible. It is unnecessary.

In the above segment assembly device, preferably, the tuning drive means fixes a tube to the segment gripping device and a first double rod type cylinder in which one of two rods is fixed to the swivel device, and A second double rod type cylinder in which a tube is fixed to the shield body, and one of two rods is fixed to a stationary member in the tunnel; and the first double rod type cylinder and the second double rod type cylinder The ports on the front side of the tunnel and the ports on the rear side of the tunnel are connected to each other.

In this case, preferably, the stationary member in the tunnel is a perfect circle retainer of an existing segment ring arranged behind the turning device and the segment gripping device.

Further, preferably, the segment gripping device is attached to the turning device so as to be movable by at least one segment ring in the tunnel axial direction. This allows the segments to be assembled while the shield body is being dug up until the assembly of the one-segment ring is completed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2, the segment assembling apparatus of the present embodiment has an erector 2, which is attached to the rear part of the shield body 1 of the shield machine, and the shield jack 1 is extended to extend the shield body 1. When the digging is performed, the segment ring 10 for assembling the digging reaction force is assembled.

A roller 12 is supported by a bracket 1b attached to the ring garter portion 1a of the shield body 1, and the roller 12 supports the erector ring 31 of the erector 2.
Is mounted so that it can turn around the tunnel axis. The elector ring 31 is a ring having a rectangular cross section, and a gear (not shown) is attached to the inner diameter portion. Shield body 1
A turning motor 11 is attached to the inner shell member (not shown), and the driving of the turning motor 11 causes the elector ring 31 to turn via the pinion 13 attached to the output shaft of the turning motor 11 and the gear (not shown).

A pair of right and left arms 32 each having a rectangular cross section are attached to the erector ring 31 so as to project to the rear side (hole side) of the tunnel, and three sliders 34 for sliding forward and backward are provided on the outer sides of the left and right arms 32 in the radial direction. Straight bearing 3
It is attached via 3 so as to be movable by one segment ring or more in the tunnel axial direction (tunnel front-back direction).
In this embodiment, the slider 34 is provided outside the arm 32.
However, the slider 34 may be mounted inside the arm 32.

A rod guide 36 is attached to the slider 34, a through hole is provided in the rod guide 36 in the pressing direction, and a rod 35 is disposed in the through hole so as to be slidable in the pressing direction. One end is attached to the suspension beam 37. The suspension beam 37 has a substantially gate shape, and the rods 35 are attached to both left and right ends. The end of the rod guide 36 on the wellhead side and the suspension beam 37
A pressing jack 40 is attached to the upper end of the suspension jack 37, and the suspension beam 37 moves up and down by the pressing jack 40.

A gripping portion 50 for gripping the segment 6 is provided below the suspension beam 37, and the gripping portion 50 is moved in the tunnel axis direction by the front and rear jacks 51. The grip portion 50 has a grip screw 38 for suspending the segment 6,
The gripping screw 38 matches a grout hole 6a formed at the center position of the segment 6, and is screwed into the grout hole 6a by a drive motor (not shown) mounted inside the suspension beam 37. Further, a steadying member 41 for preventing the suspended segments 6 from being loaded is attached to the lower surface of the suspension beam 37. Although the segment 6 is gripped by the gripping screw 38 here, a gripping jig may be screwed into the grout hole 6a to grip the gripping jig.

Beams 130 and 131 fixed to the frames 1m and 1n connected to the pillar 1k of the shield body 1 and extending to the rear of the tunnel are disposed inside the arm 32. The beams 130 and 131 are not shown. It is used as a structural material for the deck part for assembly work. On the beam 131, a perfect circle retainer 120 that pushes the segment ring 10 that is going to be deformed laterally due to the weight of the segment or earth pressure and pushes the segment ring 10 up and down and holds it in a perfect circle is attached so as to be movable in the tunnel axis direction. ing.

The perfect circle holder 120 is a member that is stationary at a predetermined position, here, the position shown in FIG. 1 during segment assembly, and has two vertical frames 121 as shown in FIG. A horizontal frame 125 is attached to each of the vertical frames 121, and wheels 124 are supported on the horizontal frames 125 so as to be capable of reciprocating on a beam 131. The extension jacks 122 are attached to the upper and lower ends of the left and right vertical frames 121, and the left and right extension jacks 1
An arc-shaped pressing frame 123 that presses the inner surface of the segment ring 10 by extending the expansion jack 122 is attached between the parts 22. The expansion jack 122 is controlled by a manual operating device (not shown).

Between the left and right beams 130 and the perfect circular cage 120, as shown in FIG. 4, a double rod type front and rear cylinder 110 (hereinafter referred to as a double rod type cylinder) having a tube inner diameter D1 and a rod diameter d1. 110) are provided on the left and right, and the double rod type cylinder 1 is provided above the beam 130.
10 tubes 111 are fixed and one rod 11 of the double rod type cylinder 110 is attached to a horizontal frame 126 which is attached to a vertical frame 121 of a perfect circle holder 120.
The second end is fixed, and the other rod 113 is free.

Between the slider 34 and the arm 32, front and rear cylinders 100 (hereinafter referred to as a double rod type cylinder 100) of a double rod system having a tube inner diameter D2 and a rod diameter d2 are provided on the left and right, respectively. The tube 101 of the double rod type cylinder 100 is fixed to the upper side of 34, the end of one rod 102 of the double rod type cylinder 100 is fixed to the tunnel front side (cut face side) end of the arm 32, and the other rod is fixed. 103 is free.

The port on the wellhead side of the double rod type cylinder 110 and the port on the wellhead side of the double rod type cylinder 100 are connected by a hydraulic hose 161. Similarly, the port on the face of the double rod type cylinder 100 and the double rod type are connected. Cylinder 110
A hydraulic hose 160 is connected to the face-side port of the.

The tube inner diameter D1 of the double rod type cylinder 110 and the tube inner diameter D2 of the double rod type cylinder 100 are equal, and the rod diameter d of the double rod type cylinder 110 is
1 and the rod diameter d2 of the double rod type cylinder 100 are equal. Further, the rods 103 and 113 in the free state of both rod front and rear cylinders 100 and 110 are covered with a cover for preventing danger.

A single rod type front-rear cylinder 115 for slider is provided between the slider 34 and the arm 32, and the rod side 116 of the front-rear cylinder 115 for slider is fixed to the end face of the slider 34 on the cut face side. Arm 32
The bottom side 117 of the slider front-rear cylinder 115 is fixed to the end portion on the cut face side. As shown in FIG. 5, the hydraulic circuit of the slider front-rear cylinder 115 includes a hydraulic source 202.
And a control valve 200 that is connected between the slider front-rear cylinder 115 and the hydraulic pressure source 202 and controls the pressure oil supplied to the slider front-rear cylinder 115, and a manual operation device 201 that controls the control valve 200 by manual operation. Is connected between the slider front-rear cylinder 115 and the control valve 200, and pressure oil is applied to the slider front-rear cylinder 115 on the rod side 1
When the oil flows from 16 to the bottom side 117, the throttle 204 for self-sufficient oil from the tank due to the area difference
And A small charge pump may be provided if the above hydraulic circuit also lacks in self-sufficiency of oil.

In the above, the elector ring 31, the turning motor 11, the pinion 13, the arm 32, and the front-rear sliding linear bearing 33 are the shield main body 1 of the shield machine.
A swivel device mounted so as to swivel around the tunnel axis, and includes a slider 34, a rod guide 36, and a rod 3.
5, suspension beam 37, pressing jack 40, grip 5
0, front and rear jacks 51, gripping screw 38, steady rest 4
Reference numeral 1 denotes a segment gripping device that is attached to a swivel device so as to be movable in the tunnel axial direction, and that composes a segment gripping device that grips the segment 6. When moving forward, the tuning drive means is configured to move the segment gripping device by the same amount as the moving amount in the tunnel axially backward direction with respect to the turning device.

The operation of the segment assembling apparatus of the present embodiment configured as above will be described. First, the manual operation device 2
By operating 01, the control valve 200 is moved to the position shown in FIG.
Side to the bottom 117 side.

In this state, when the shield body 1 advances,
As shown in FIG. 4, as the beam 130 moves toward the face of the perfect circle holder 120 by L1, the beam 13
Tube 1 of double rod type cylinder 110 fixed to 0
11 also moves to the face side by L1, and the pressure oil associated with the amount of movement is pushed out from the wellhead side port of the tube 111. The pressure oil flows into the wellhead side port of the tube 101 of the double rod type cylinder 100 via the hydraulic hose 161, and the pressure at this time causes the tube 101 to move to the wellhead side by L2.
Only the slider 34 fixed to the tube 101.
Also moves L2 toward the wellhead side with respect to the arm 32. Then, the pressure oil from the face side port of the tube 101 is pushed out and flows into the face side port of the tube 111 of the double rod type cylinder 110 via the hydraulic hose 160, and the insufficient oil of the double rod type cylinder 110 is discharged. Will be replenished.

At that time, the double rod type cylinders 110, 1
00, the tube inner diameters D1 and D2 and the rod diameters d1 and d2 are exactly the same. Therefore, the movement amount L1 of the shield main body 1 with respect to the perfect circle holder 120 and the arm 32 of the slider 34.
The amount of movement L2 to the minehole side is the same. Therefore,
First, the center position of the hanging beam 37 in the tunnel axial direction is shown in FIG.
If the position of the perfect circle holder 120 is determined so as to be the position P (here, the segment assembling position), the segment assembling position P is as shown in (a) and (b) of FIG. The shield body 1 is maintained at the same position irrespective of the excavation of the shield body 1, whereby the segment 6 can be assembled in parallel with the excavation of the shield body 1.

In assembling the segment 6, first, the segment 6 is grasped by screwing the grasping screw 38 into the grout hole 6a of the segment 6 carried into the segment assembling position P, and then the turning motor 11, the pressing jack 40, The front and rear jacks 51 are moved to position the grasped segment 6 at a predetermined assembly position and join the adjacent existing segment.

This operation is performed for one ring, and when the assembly of the segment 6 for one ring is completed, the expansion jack 122 of the perfect circle holder 120 is loosened by a manual operating device (not shown) and controlled by operating the manual operating device 201. Valve 200
Is switched from the position shown in FIG. 5 to another position and the slider front-rear cylinder 115 is contracted, whereby the slider 34
Is pulled toward the cutting face with respect to the arm 32. At this time, the operation opposite to that at the time of segment assembly described above is performed, and the perfect circle holder 120 is pulled toward the shield body 1 side.

That is, when the slider 34 is pulled toward the cutting face with respect to the arm 32, the tubes 101 of the rod-shaped cylinders 100 fixed to the slider 34 also move to the cutting face side, and the pressure is applied from the wellhead side port of the tube 101. Oil is pushed out. The pressure oil flows into the wellhead side port of the tube 111 of the double rod type cylinder 110 through the hydraulic hose 161, and the perfect circle holder 120 fixed to the rod 112 of the double rod type cylinder 110 by the pressure at this time.
Moves to the cutting face. Then, the pressure oil is pushed out from the face side port of the tube 111, the pressure oil flows into the face side port of the tube 101 of the double rod type cylinder 100 through the hydraulic hose 160, and the double rod type cylinder 100. Shortage of oil is replenished.

According to the present embodiment configured as described above, when the shield body 1 is dug and moves by a predetermined amount with respect to the perfect circle holder 120, the tubes 111 of both rod-shaped cylinders 110 move toward the facet. The oil moves along with the moving amount of the shield body 1 and flows out of the tube 111 into the tube 101 of the double rod type cylinder 100. The pressure at this time moves the tube 101 to the wellhead side, and the slider 3
Since 4 moves toward the wellhead side with respect to the arm 32, the suspension beam 37 is always installed at the segment assembly position during the excavation of the shield body 1 without attaching an erector to a perfect circle holder or a similar device as in the conventional case. Can be maintained at P, which allows segment 6 during segment assembly.
It is possible to quickly assemble the segments 6 in parallel with the excavation of the shield body 1 without lowering the positioning accuracy of. In addition, the shield body 1 and the perfect circle holder 120
The change in relative position between the two double rod type cylinders 10
By changing the oil amount of 0, 110, the slider 34 and the arm 3
Since it is simply replaced with the change in the relative position with respect to 2, the structure of the erector 2 is simpler than that of the conventional one in which a pair of front and rear erectors are provided, and complicated control is not required.

Further, since the slider 34 can be moved in the tunnel axial direction by one segment ring or more with respect to the arm 32 through the front and rear sliding linear bearings 33, the shield body 1 can be assembled until the assembly of the one segment ring is completed.
The segment 6 can be assembled while excavating.

In the present embodiment, the elector 2
Two double rod-shaped cylinders 100 and 110 are provided in the, and the relative position change between the shield body 1 and the perfect circle holder 120 is
Although the relative position change between the slider 34 and the arm 32 is replaced by the change in the oil amount of both rod type cylinders 100 and 110, the relative position change between the shield body 1 and the perfect circle holder 120 can be changed by the slider. The present invention can be applied as long as it can be replaced by a relative position change between the arm 34 and the arm 34.

[0041]

According to the present invention, the change in the position of the shield body is replaced with the change in the relative position between the segment gripping device and the turning device. Therefore, the segment assembly can be performed accurately and quickly in parallel with the shield excavation without performing complicated control with a simple structure.

[Brief description of the drawings]

FIG. 1 is an overall view of a shield machine equipped with a segment assembly device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

4A and 4B are a configuration diagram and an operation explanatory diagram of the double rod type cylinder shown in FIG.

5 is a hydraulic circuit diagram of the slider front-rear cylinder shown in FIG. 1. FIG.

6 is a diagram showing a segment assembly position corresponding to a relative position between the shield body and the perfect circle holder shown in FIG.

[Description of Reference Signs] 1 shield body 2 erector 6 segment 10 segment ring 31 erector ring 32 arm 33 linear bearing for forward and backward sliding 34 slider 37 suspension beam 50 gripping portion 100,110 double rod type cylinder 101,111 tube 102,112 rod 115 Front and rear cylinders for slider 120 True circle retainer 130, 131 Beam 160, 161 Hydraulic hose

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takami Kusagi 650 Jinrachicho, Tsuchiura, Ibaraki Prefecture Tsuchiura Plant, Hitachi Construction Machinery Co., Ltd. Stock company Tsuchiura factory

Claims (4)

[Claims] 1. A segment assembling apparatus, which is provided in a shield machine and positions and assembles a segment in a predetermined position in a tunnel in parallel with the excavation of the shield machine, comprising: a shield body of the shield machine around a tunnel axis. A turning device that is attached so as to be turnable, a segment holding device that is attached to the turning device so as to be movable in the tunnel axial direction, and that holds the segment, and the amount of movement when the shield body moves forward in the tunnel axial direction. The segment assembling device, which has the same amount as the above, and tuning drive means for moving the segment gripping device rearward in the tunnel axial direction with respect to the turning device. 2. The first double rod type cylinder according to claim 1, wherein the tuning drive means fixes a tube to the segment gripping device and one of two rods is fixed to the swivel device. And a second double rod-type cylinder in which a tube is fixed to the shield body and one of two rods is fixed to a stationary member in the tunnel, the first double-rod cylinder and the second double-rod cylinder. A segment assembling apparatus, characterized in that ports on a front side of a tunnel of a rod-shaped cylinder and ports on a rear side of a tunnel are connected to each other. 3. The segment assembly device according to claim 2, wherein the stationary member in the tunnel is a perfect circle retainer of an existing segment ring arranged behind the turning device and the segment gripping device. Segment assembly equipment. 4. The segment assembling apparatus according to claim 1, wherein the segment gripping device is attached to the turning device so as to be movable by at least one segment ring in a tunnel axis direction.