JPH082238Y2 - Shield excavator segment delivery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a segment delivery device for a shield machine, in which a segment for tunnel construction is suspended and delivered to an erector of the shield machine.

[Prior Art] Generally, a shield machine has an erector 2 for assembling segments in a cylindrical shield frame 1 as shown in FIG. The erector 2 includes a slewing wheel 3 that swivels along the inner circumference of the shield frame 1, and a suspension beam 4 that has both ends supported by the slewing wheel 3 and that moves in a radial direction.
And the segment grip 5 provided on the suspension beam 4.
It is mainly composed of

In this case, a hanging metal object having a pin hole is attached to the central screw hole of the segment, and the hanging metal object is connected to the segment grip portion 5 via a pin.

Then, when delivering a segment transported by a trolley or the like to the erector 2, first, the segment is lifted by a hoist and once lowered to the ground below the erector, and the segment gripper 5 of the erector is moved onto the segment to move the segment gripper 5 to the segment gripper 5. A pin was inserted between the hanging hardware.

[Problems to be Solved by the Invention] However, when delivering a segment, it is necessary to drop the segment to the ground and insert the pin each time, which is troublesome and has been a bottleneck in shortening the segment assembly time.

Therefore, an object of the present invention is to solve the above problems and to provide a segment delivery device for a shield machine that can deliver the segment to the erector while suspending the segment and can shorten the segment assembly time.

[Means for Solving the Problems] In order to achieve the above object, the present invention has a hanging metal article that is attached to a segment and has two upper and lower collars, and a claw that locks the upper collar of the hanging metal article. A suspension device that suspends and conveys the segment to the position of the shield machine's erector,
And a gripping portion that is provided on the erector and laterally locks the lower brim of the hanging metal object of the segment that is hung by the hanging device.

[Operation] When a segment transported by a trolley, etc. is delivered to the erector of a shield machine, first the upper jaw of the hanging metal of the segment is locked by the claws of the lifting device, and the segment is hung and transported to the grip of the erector. The lower brim of the hanging hardware may be locked to the grip portion. In this case, the claws of the lifting device hold the upper flange of the hanging metal object, and the grips of the erector hold the lower flanges of the hanging metal object from the side. There is no problem, and smooth delivery is possible.

In this way, the segment can be directly delivered to the erector without hanging the segment on the ground and without the need to insert the pin. Therefore, the delivery work is not required and the segment assembling time can be shortened.

[Embodiment] An embodiment will be described below in detail with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 2 denotes an erector provided in the shield frame 1 of the shield machine, so that the arc-shaped segment S transported by the carriage 7 is delivered to the erector 2 by the delivery device 8. It has become. The delivery device 8 is attached to the segment S and has a hanging metal article 11 having two upper and lower collars 9 and 10, and an upper brim 9 of the hanging metal article 11.
A suspension device 13 for suspending and transporting the segment S to the position of the erector 2 of the shield machine, and a segment S provided on the erector 2 and suspended by the suspension device 13. It is mainly composed of a grip portion 14 for locking the lower flange 10 of the hanging metal article 11 from the side.

The hanging hardware 11 has a threaded portion 11 at one end as shown in FIG.
Circular collars 9 and 10 are formed in upper and lower two stages on the head of a rod having a, and a threaded portion 11a is screwed into a screw hole 15 provided at the center of the inner surface of a segment S to be attached.

The hoisting device 13 is mainly composed of a hoist 17 movably supported by a beam 16 extending rearward from the shield machine, and a hoisting device 19 suspended from a hoisting rope 18 of the hoist 17. . The hanging device 19 has a turning portion 21 which is swung by an upper driving portion 20.
A claw 12 that locks the upper collar 9 of the hanging metal 11 and a holding arm 22 that holds one end of the segment S are attached to this. The claw 12 has a turning portion 21 as shown in FIGS.
It is composed of a pair of arm pieces 23, 24 having an L-shaped cross section, which are openably and closably provided at the lower end of the arm.
It is individually pivoted at 25,26. That is, the left arm piece 23 is pivotally supported on the right side horizontal shaft 26, and the right arm piece 24 is pivotally supported on the left side horizontal axis 25. Both arm pieces 22 and 23 are suspended by the suspension load of the segment S. A moment is generated in the direction of pinching 11. Incidentally, 27 is a relief hole formed in each arm piece 23, 24 to avoid the other horizontal axis 25, 26.

At the tip of each arm piece 23, 24, the upper and lower collars 9, 1 of the hanging hardware 11 are
A semi-circular or wedge-shaped notch corresponding to the neck member 11b between 0
28 is formed so that when the both arm pieces 23, 24 are closed, the entire lower surface of the upper collar 9 can be supported.

The opening / closing cylinder 29 is vertically attached above the arms 23 and 24, and the clevis 30 attached to the piston rod tip and the shoulders of the arms 23 and 24 are connected via a tension bar 31. ing. In this case, the tension bar 31 has a narrow angle α when it is closed, and the arm pieces 23, 2
Even if 4 receives an external force in the opening direction, this can be prevented.

On the other hand, in order to configure the grip portion 14 provided on the erector 2, a U-shaped base portion 32 facing rearward is formed in the center of the suspension beam 4, and the guide rods 33 on both sides are formed on the base portion 32. Similarly, a U-shaped sliding frame 23 is mounted slidably in the Y-axis direction (axial direction of the shield), and the sliding cylinder 35 is connected to the rear end of the sliding frame 34. . A pair of sliding blocks 37, 38 are slidably mounted on the sliding frame 34 through a pair of guide plates 36 in the X-axis direction (direction orthogonal to the sliding direction of the sliding frame), and An opening / closing cylinder 39 for opening / closing the sliding blocks 37, 38 is provided between the blocks 37, 38 and the sliding frame 34.

Both of these sliding blocks 37, 38 form a grip portion 14 for laterally locking the lower collar 10 of the hanging hardware 11. As shown in FIG. 7, the hanging hardware 11 is provided on the lower inside of the sliding blocks 37, 38.
Gripping pieces 37a and 38a, which are thinner than the gap H between the lower brim 10 and the inner surface of the segment, are projectingly provided, and the gripping pieces 37a and 38a correspond to the neck member 11c below the lower brim 10 of the hanging hardware 11. A notch 40 is formed so that the entire lower surface of the lower collar 10 can be supported in the closed state. Further, as shown in FIG. 6, a lock block for locking the sliding frames 37, 38 between the outer surfaces of the sliding blocks 37, 38 and the inner surface of the sliding frame 34 when the sliding frames 37, 38 are closed. The lock cylinder 42 allows the lock cylinder 41 to be inserted and removed freely.

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

The segment S is loaded on the carriage 7 and conveyed to the vicinity of the rear of the shield machine. The hanging hardware 11 is attached to the segment S in advance, and the hanging tool 19 of the hanging device 13 is moved onto the hanging hardware 11 to close the arm pieces 23 and 24 of the claw 12 to lock the upper collar 9. , Hoist 17 to wind up segment S. In the suspended state of the segment S, the arm pieces 23, 24 are urged in the closing direction by the suspension load, and the tension bar 31 has the narrow angle α, so that the segment S is not likely to drop.

Since the inside of the tunnel is usually small and the segment S is vertically loaded along the axial direction of the tunnel on the trolley 7, the turning of the turning portion 21 with the segment S hung causes the pressing arm 22 to intervene. The shield frame 1 is turned 90 degrees so that the shield frame 1 is in a sideways state along the circumferential direction.

Next, the hoist 17 is driven to move the segment S to the erector 2.
When it is conveyed to the vicinity of, the height of the segment S is adjusted with respect to the grip portion 14 of the erector 2 located below, and the segment S is further moved to the grip portion 14 side so that the lower collar 10 of the hanging hardware 11 is located below. Grip piece 37 of sliding block 37, 38 on neck 11c
It is located between a and 38a. Then, the sliding blocks 37, 38 are closed and locked by the lock block 41, and if the load of the segment S is completely tilted to the grip portion 14 by slightly winding the segment S, the arm pieces 23, 24 of the hanging device 19 are obtained. Is opened to separate the hanging tool 19 from the hanging hardware 11, and the delivery of the segment S is completed. Although such a delivery operation is performed by artificial control, it may be performed by automatic control.

Although the sliding frame 34 is not slid in the Y-axis direction at the time of delivery, the segment S is finely adjusted by the sliding operation of the sliding frame 34 when positioning the segment S at a predetermined position of the existing segment AS. be able to.

In particular, the claw 12 of the hanging device 13 has the upper flange 9 of the hanging metal object 11 and the grip portion 14 of the erector 2 has the lower flange 10 of the hanging metal object 11. The gripping portion 14 does not interfere, and the segment S can be smoothly delivered in a suspended state.

In this way, the segment S can be delivered directly to the erector 2 without hanging the segment S on the ground and without the need to insert a pin. Therefore, the delivery work is not required and the segment assembly time can be shortened. .

[Advantage of the Invention] In short, according to the present invention, the segment can be delivered to the erector while being suspended, and the segment assembly time can be shortened.

[Brief description of drawings]

FIG. 1 is a perspective view of a delivery device showing an embodiment of the present invention,
2 is a schematic side view of the device, FIG. 3 is a cross-sectional view showing a claw portion of a suspension device, FIG. 4 is a side view of FIG. 3, and FIG. 5 is a cross-sectional view taken along line VV of FIG. FIG. 6 is a partial cross-sectional view of the segment gripping portion, FIG. 7 is a cross-sectional view showing a completed delivery state of the segment, and FIG. 8 is a view showing a general configuration of the shield machine. In the figure, 2 is an erector, 9 is an upper collar, 10 is a lower collar, 11 is a hanging metal object, 12 is a claw, 13 is a hanging device, 14 is a gripping portion, and S is a segment.

Claims (1)

[Scope of utility model registration request] 1. A suspension which is attached to a segment and has a hanging metal article having two upper and lower flanges and a claw for locking the upper collar of the hanging metal article, and which suspends and conveys the segment to the position of an erector of a shield machine. A segment delivery device for a shield machine, comprising: a device; and a grip portion provided on the erector and laterally locking a lower brim of a hanging metal object of a segment suspended by the hanging device. .