JPH0322399Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a segment supply device for a shield excavator that supplies segments into the excavator for reinforcing the inner surface of a tunnel wall excavated by the shield excavator. .

[Prior Art] In general, as a segment supply device for a shield tunneling machine, devices as shown in FIGS. 4 and 5 have been known.

As shown in the figure, a segment assembly erector c provided with a suspension beam b is provided within the shield body a.

Then, in order to reinforce the inner surface of the tunnel wall that has been excavated, segment b is
is gripped and moved to a predetermined position, and assembled so as to cover the inner periphery of the tunnel wall. For this purpose, a segment supply device e is provided to supply the segment d to the hanging beam b.

This segment supply device e is suspended from a beam f whose one end is fixed to the shield body a side and whose other end extends to the rear of the shield body a, and is conveyed from the rear by a cart g or the like. It consists of a hoist i that lifts the segment d by a chain h and transports it to the hanging beam b of the erector c.

In order to supply segment d, which has been transported by truck g from the rear of the tunnel, to suspension beam b of erector c, segment d on truck g is hoisted by hoist i, and at the same time, erector c is rotated (arrow l ) The hanging beam b is moved upward and placed on standby (indicated by the imaginary line in Fig. 4), and the hoist i is
After moving the segment d to the lower side of the suspension beam b, the segment d is separated and temporarily placed below. Next, the hoist i is retreated backwards, the erector c is rotated to move the hanging beam b to just above the segment d, and then the hanging beam b grips the segment d and rotates it again to move it to a predetermined position. It was built into the inner surface of the tunnel wall.

[Problems to be solved by the invention] However, the segment supply device having the above structure has the following problems.

(1) When feeding the segment d to the lower side of the hanging beam b by the hoist i, rotate the erector c to move the hanging beam b upward so that the chain h of the hoist i and the hanging beam b do not interfere with each other. must be put on standby for a while. Furthermore, this standby operation of the suspension beam b is necessary every time the segment d is supplied directly below the suspension beam b, which results in poor workability.

(2) The position of segment d, which is temporarily placed below hanging beam b in shield body a, is not accurate, so after adjusting the position of segment d manually,
This segment d is held by the hanging beam b, and this segment holding work takes time.

(3) The work of feeding segment d, which is a heavy object, to the lower side of hanging beam b and then having it gripped by hanging beam b is carried out manually, which is dangerous and requires automation. and it is difficult to shorten working time.

This invention was made in consideration of the above circumstances,
It is an object of the present invention to provide a segment supply device for a shield excavator that can safely and accurately supply segments to a suspended beam in a short time.

[Means for Solving the Problems] In order to solve the above problems, the present invention includes a swivel ring provided at the rear part of the shield frame so as to be able to freely rotate in the circumferential direction thereof, and a swivel ring that is integrally attached to the swivel ring. and a suspension beam that is provided to be extendable and contractible in the radial direction and that grips a single segment, and that extends the gripped segment to the inner wall of the excavated tunnel in accordance with the turning movement of the turning ring. In the shield tunneling machine, the single segment is lifted into the tunnel along its longitudinal direction and transported to the vicinity of the erector,
A hoist for rotating and positioning the suspended segment in the direction in which it will be stretched, and two machines installed in parallel to sandwich the travel path of this hoist.
Segment loading system that has a main beam, a pair of suspension parts that are movably suspended from these beams and extend back and forth, a support that extends downward from the suspension parts, and an arm that extends forward from the lower end of the support. a positioning stopper provided at the front of the lower part of the support column and having an inclined guide part for guiding the rotatably positioned segment to be lowered onto the arm part, and a positioning part formed at the lower end; a positioning device for pushing and pulling the segment toward the stopper in order to bring the segment placed on the arm into contact with the positioning part of the positioning stopper for positioning;
The arm is provided with a stopper for stopping the loading, which is provided at the front end of the arm to stop the segment supported by the segment loading machine at a predetermined position directly below the hanging beam of the erector.

[Operation] A segment carried from the back of the tunnel is carried by a hoist to the vicinity of the erector, this segment is received by a segment carrying machine, and is inserted directly under the suspension beam of the erector to be gripped by the erector. Next, the erector tensions the gripped segment on the inner periphery of the tunnel wall, and at the same time, the segment loading machine receives the next segment from the hoist and waits.When the erector tensions the segment, the segment loading machine picks up the next segment. Insert it under the suspension beam.

In the above, when placing the segment on the arm with the hoist, the segment is guided by the inclined guide part of the positioning stopper and placed on the arm, and the placed segment is positioned by the positioning device. It is positioned by coming into contact with the positioning part of the stopper. In addition, when the segment loading machine inserts the mounted segment directly under the hanging beam,
It is automatically stopped at a predetermined position by the carry-in stopper, and the positioned segment is automatically and accurately positioned to be gripped by the suspension beam. This eliminates the need to align the hanging hardware of the hanging beam and the hanging fittings of the segments, as in the past, and dangerous work can be eliminated.

[Examples] Examples of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a side sectional view showing the segment feeding device of the shield tunneling machine of the present invention, and Fig. 2 is a - of Fig. 1.
FIG. 3 is a sectional view taken along the - line in FIG. 1.

A swing ring 2 is rotatably provided in the shield frame 1 along its inner periphery, and a hanging beam 3 is provided on the swing ring 2 to form an erector 4. This suspension beam 3 is provided with a segment hanging hardware 6 that grips and lifts a segment 11, which will be described later, by a segment hanging fixture 31 thereof. Furthermore, the hanging beam 3 is slidably provided on the swing ring 2 so that it can extend outward in the radial direction by hydraulic jacks 7, 7 fixed to the swing ring 2 side. Note that 8 is a roller that supports the rotation of the turning ring 2, and 9 is a shield jack.

Furthermore, a segment supply device 12 is provided within the shield frame 1 for supplying the segments 11 to the suspension beam 3 of the erector 4 from the rear of the tunnel.

This segment supply device 12 includes a hoist rail 14 that is disposed in the upper central part of the inside of the shield frame 1 and is supported by a frame 13 fixed to the shield frame 1 side and extends to the rear of the shield frame 1. A traveling type hoist 15 that lifts the segment 11 suspended on the erector 4 and carries it to the erector 4 side, and a traveling type hoist 15 that is arranged symmetrically in a position that does not interfere with the chain 16 of this hoist 15 and the hanging beam 3 of the erector 4, and the frame 1
Beams 18 and 19 are fixed to the suspension beam 3 and extend to the rear of the suspension beam 3.
1 to directly below the hanging hardware 6 of the hanging beam 3, the segment loading machine 20 has a substantially U-shaped side surface.

Specifically, the segment loading machine 20 is suspended on two beams 18 and 19 by traveling wheels 22 and a self-propelled electric motor 23, and
A pair of suspension parts 33, 34 extending back and forth along the longitudinal direction of 9, two struts 24, 25 extending downward from the rear ends of these suspension parts 33, 34, and these struts 24, 25 are integrated. Connecting beam 2
6, an arm portion 27 extending from the lower ends of the two pillars 24 and 25 toward the erector 4 and supporting the segment 11; and an arm portion 27 provided on the base end side of the arm portion 27,
A positioning stopper 28 that determines the position of the segment 11 mounted on the arm 27, and a hydraulic pressure provided on the distal end side of the arm 27 to draw the segment 11 mounted on the arm 27 toward the positioning stopper 28. A positioning device 29 operated by a jack (not shown) and the segment 11 provided at the tip of the arm 27 and positioned on the arm 27 are precisely positioned directly below the hanging hardware 6 of the hanging beam 3. The arm part 27 is attached to the hanging beam 3 in order to carry it into the
The insertion stopper 30 is configured to stop the insertion at a predetermined position on the lower side.

The positioning stopper 28 is connected to the columns 24 and 25.
It has an inclined guide part 35 that guides the segment 11 when the segment 11, which is rotatably positioned and provided in front of the arm part 27, is lowered to be placed on the arm part 27.
A positioning portion 36 for positioning the placed segment 11 is formed at the lower end of the holder. This positioning stopper 28 moves the segment 11 placed on the arm portion 27 to a position directly below the hanging beam 3 of the erector 4 by pushing the segment 11 placed on the arm portion 27 into the positioning portion 36 side by being pushed by the positioning device 29. At this time, it is automatically positioned at a position where it is gripped by the hanging beam 3.

Incidentally, a segment hanging fitting 31 is screwed into the segment 11 for lifting with the hoist 15 and for supporting with the hanging hardware 6 of the hanging beam 3. Further, 32 is a truck, and the segment 11 is mounted on this truck 32 and carried from the rear of the tunnel.

Next, the action will be explained.

First, the segment loading machine 20 is moved to the beams 18,1.
9 is placed on standby at the rear end. Next, the segments 11 loaded onto the trolley 32 and carried from the back of the tunnel are moved to the traveling hoist 1 using the hanging fittings 31.
5 and transfer it to the erector 4 side. At this time, the segment 11 consists of two beams 18 and 19.
Or the two pillars 2 of the segment loading machine 20
The beams 18 and 19 are transported with their longitudinal directions aligned with the longitudinal directions of the beams 18 and 19 so that they can pass between the beams 18 and 25.

As the segment 11 passes between the struts 24 and 25, the hoist 15 extends its chain 16 to move the segment 11 between the two beams 18 and 25.
It is lowered to a position where it can be turned without interfering with the segment loader 19, turned 90 degrees, and placed on the arm 27 of the segment loading machine 20. Next, the segment 11 placed on the arm portion 27 is pulled to the positioning stopper 28 by the positioning device 29 and fixed therein. After that, move the segment loading machine 20 to the erector 4 side and
The segment 11 fixed to the frame 7 is carried directly below the hanging hardware 6 of the hanging beam 3. At this time, the segment loading machine 20 carries out the segment 1 mounted on its arm 27.
At the position where the first hanging fitting 31 has moved directly below the hanging fitting 6, the carry-in stopper 30 hits the erector 4 and stops.

Next, the suspension beam 3 of the erector 4 is extended to the segment 11 side using the hydraulic jacks 7, 7, and the suspension hardware 6 of the suspension beam 3 is engaged with the suspension fixture 31 of the segment 11, and fixed together with a pin (not shown). do. Then, by operating the hydraulic cylinders 7, 7, the hanging beam 3
The segment 11 is lifted up and the segment loading machine 20 is placed on standby at the rear.

Next, erecta 4 is rotated and segment 1
1 to the specified position and assemble it to the inner surface of the tunnel wall. At the same time, the next segment 11 is placed on the arm section 2 of the segment carry-in machine 20 that is waiting at the rear.
7 is carried out in the process described above.

As described above, the segment 11 can be transported and supported by the hanging beam 3 at an accurate position directly under the hanging hardware 6 without turning the erector 4 and making it standby.
Since the next segment 11 is loaded onto the segment carry-in machine 20 without the work being crowded while the segment is being assembled on the inner wall of the tunnel, the time for assembling the segments can be significantly shortened.

Further, according to the present invention, the hanging hardware 6 of the hanging beam 3 and the segment 1 are connected to each other on the lower side of the hanging beam 3 as in the conventional case.
Since there is no need to perform alignment work with the first hanging fitting 31, dangerous work can be eliminated.

In this embodiment, the hoist 15 uses one chain 16 to hoist the segment 11, but for example, the hanging fittings 31 of the segment 11 are provided at two locations to give the hoist 15 the function of raising and lowering the segment 11 and the function of turning the segment 11. Almost the entire process can be automated by using existing technology, such as configuring the hanging hardware 6 of the hanging beam 3 to automatically engage with the hanging hardware 31 of the segment 11.

[Effects of the invention] In summary, the invention provides the following effects.

Segments can be inserted in accurate positions directly under the suspension beam without turning or waiting the erector, eliminating the need to align the hanging hardware of the suspension beam and the hanging hardware of the segment, which is dangerous. Work can be abolished. In addition, while the erecta is installing a segment on the tunnel inner wall, the next segment can be loaded onto the segment loading machine and placed on standby, which greatly reduces segment assembly time and, by extension, the tunnel excavation time. can.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the segment feeding device of the shield tunneling machine of the present invention, and Fig. 2 is a - of Fig. 1.
3 is a sectional view taken along the - line in FIG. 1, FIG. 4 is a side sectional view showing a segment feeding device of a conventional shield tunneling machine, and FIG. 5 is a sectional view taken along the - line in FIG. 4. It is an arrow sectional view. In the figure, 1 is a shield frame, 2 is a turning ring, 3 is a suspension beam, 4 is an erector, 11 is a segment, 15 is a hoist, and 20 is a segment loading machine.

Claims (1)

[Scope of utility model registration request] a swivel ring provided in the rear part of the shield frame so as to be freely swivelable in the circumferential direction thereof, and a swivel ring that is integrally attached to the swivel ring and extendable outwardly in the radial direction to grasp a single segment; In a shield excavator equipped with an erector consisting of a hanging beam that follows the rotation of the slewing ring and extends the gripped segment onto the inner wall of an excavated tunnel, the single segment is inserted into the tunnel along its longitudinal direction. a hoist for hoisting and transporting the segment to the vicinity of the erector, rotating the suspended segment and positioning it in the direction in which it will be stretched; and two beams installed in parallel to sandwich the travel path of the hoist. , has a pair of suspension parts extending back and forth that are movably suspended from these beams,
It has a strut extending downward from the rear end of the suspension part,
a segment loading machine having an arm extending forward from the lower end of the support; an inclined guide part provided at the front of the lower part of the support for guiding the rotatably positioned and descending segment onto the arm; and a positioning part at the lower end. a positioning stopper formed with a positioning stopper, and a positioning stopper provided in front of the arm, for pushing the segment placed on the arm into contact with the positioning part of the positioning stopper for positioning. a positioning device, and a loading stopper provided at the front end of the arm for stopping the segment supported by the segment loading machine at a predetermined position directly below the hanging beam of the erector. Features: Segment supply device for shield tunneling machines.