JPH08218793A - Segment transport truck - Google Patents

Abstract

PURPOSE: To automatically remove a tie material, which is used when segments are stacked in multistages. CONSTITUTION: A segment transport truck 11 has a tie material removal mechanism 12 for removing a tie material 51 placed on a lower-stage segment 1b both in front and in the rear of a truck body 10. The mechanism 12 comprises a pair of side boards 13 which are so disposed as to be opposite to each other so as to hold a segment 1a and the segment 1b from the opposite sides thereof, a removing arm 14 rotatably, about a horizontal axis, mounted to each of the side boards 13, and a drive mechanism 15 for rotationally driving the arms 14. A guide surface 17 is formed on each of the boards 13 so as to slidably guide the tie material 51 in accordance with the rotation of the arm 14. A retreat portion 16 is formed at the end of the surface 17 so that the material 51 can be placed in the portion 16 when the segment 1b is lifted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment carrier for carrying a segment for shield construction.

[0002]

2. Description of the Related Art The shield method is used for excavation and
It is a method of constructing a tunnel in the earth and sand mountains by repeating a series of operations such as propulsion, segment assembly, and backfill injection into the outer periphery of the segment.

FIG. 6 is a conceptual diagram showing, from the production of a segment to the loading into a shield pit, very simply. In the shield work, as shown in the figure, first, the segment 1 is manufactured in the segment yard on the ground, and then the crane 1 is hung on the vertical shaft 3 and mounted on the segment carrier 4. Next, the segment carrier 4 is run to transport the segment 1 into the shield pit. Next, the segment supply mechanism 5 conveys the sheet further forward and assembles it into a ring shape by a segment assembly mechanism (not shown) called an erector to form a primary lining.

Here, the segments 1 are usually stacked in several stages on the segment carrier 4 in order to increase the transport efficiency, but in order to prevent damage to the erector gripping hardware attached to the segment 1, Further, for the convenience of handling, a predetermined pillow material is often sandwiched between the segments 1 to secure a constant space.

[0005]

Here, when the segment 1 loaded on the segment carrier 4 is transported further forward by the segment supply mechanism 5, the upper segment may be taken out as it is, but the lower segment Needs to remove the above pillow once,
In the past, this was done manually.

[0006] However, the weight of the segment becomes about 3 tons in the case of a large-sized one, and the pillow material for supporting it has a weight corresponding to it, for example, about 10 kg, and is considerably heavy. In many cases, the place where such work is performed is narrow.

Therefore, the removal of the pillow material is not only a heavy burden on the worker, but also a highly dangerous work. In addition, such manual work has been a major obstacle to the automation of segment carry-in.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a segment carrier that can automatically remove a pillow material used when stacking a plurality of segments. To do.

[0009]

In order to achieve the above object, a segment carrier according to the present invention is, as described in claim 1, a carrier main body capable of stacking and transporting a plurality of segments through a predetermined pillow material. A pair of side plates arranged to face each other so as to sandwich the segment from both sides, a removing arm rotatably attached to the side plates around a horizontal axis, and a drive mechanism for rotationally driving the removing arm. And a guide surface for slidably guiding and supporting the pillow material in accordance with the rotation of the removing arm is formed on the side plate, and at the end of the guide surface, the segment surface of the segment is formed. The evacuation part is formed to evacuate the pillow material when moving up and down.

Further, according to the segment carrier of the present invention, as described in claim 2, a plurality of segments are stacked on a carrier body which can be carried by stacking the segments through predetermined pillow members so that the segments are sandwiched from both sides. And a pair of side plates disposed opposite to each other, a removing arm rotatably attached to the side plates about a horizontal axis, and a pillow member removing mechanism including a drive mechanism for rotationally driving the removing arm. The pillow is connected to the tip of the arm.

[0011]

In the segment carrier truck of the present invention, after the upper segment is lowered in the shield pit, the pillow material placed on the lower segment for supporting the upper segment is used by the pillow material removing mechanism of the present invention. Remove. That is, the above-mentioned drive mechanism is operated to rotate the removal arm, and the torque is used to laterally move the pillow material placed on the lower segment. Initially, the pillow material moves on the upper surface of the lower segment, but soon it is replaced with the side plate, and then slides on the guide surface while being guided by the guide surface formed on the side plate, and finally formed at the end of the guide surface. Move to the designated shelter. After the pillow is removed from the lower segment in this manner, the lower segment is unloaded from the main body of the carriage, and further transported forward if necessary.

In the segment carrier of the present invention, the drive mechanism is actuated to rotate the removal arm, as described above. Then, the pillow material connected to the tip of the detaching arm also rotates in accordance with the movement of the detaching arm, and eventually comes to be detached from the lower segment. After removing the pillow material in this way, the lower segment is unloaded from the main body of the carriage and transported further forward as required.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the segment carrier vehicle of the present invention will be described below with reference to the accompanying drawings. It should be noted that parts and the like which are substantially the same as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted.

(First Embodiment) FIGS. 1 and 2 are a front view and a plan view, respectively, of a segment carrier 11 according to this embodiment. As you can see in these figures,
A segment carrier 11 of this embodiment has a pedestal 8 installed on a trolley body 10, and an upper segment 1a and a lower segment 1b made of reinforced concrete or the like can be stacked on the pedestal 8 in two stages. ing. At the center of each segment 1a and 1b, a gripping metal 6 for an erector is screwed into a hole 7 formed in the inner surface thereof, and in order to protect the metal 6, a pillow material 51 is provided between the segment 1a and the segment 1b. It is sandwiched. Also,
Wheels 9 are provided below the carriage main body 10 so that they can travel on a track (not shown) laid inside the shield pit.

Further, the segment carrier 11 of the present embodiment.
In addition, the pillow material removing mechanism 12 for removing the pillow material 51 placed on the lower segment 1b is provided in front of and behind the carriage main body 10, respectively.

The pillow material removing mechanism 12 includes a pair of side plates 13 arranged to face each other so as to sandwich the segment 1a and the segment 1b from both sides, and a removing arm rotatably attached to the side plates 13 about a horizontal axis. 14 and a drive mechanism 15 for rotationally driving the removing arm 14, and the side plate 13 is formed with a guide surface 17 for slidably guiding and supporting the pillow member 51 in accordance with the rotation of the removing arm 14. , The segment 1b at the end of the guide surface 17
Retractor 16 for retracting the pillow 51 when moving up and down
Has been formed. In addition, rods 52 are provided at both ends of the pillow 51.
Is provided so that the rod 52 receives the torque of the detaching arm 14 and slides on the guide surface 17, and the body length of the pillow 51 is slightly shorter than the arrangement interval of the side plates 13. Has been formed.

The drive mechanism 15 is equipped with a motor 21 and a torque limiter 22, and the rotating shaft of the motor 21 is connected to the shaft 23 via the torque limiter 22.
A sprocket 30 fixed to the shaft 23 is connected to a sprocket 25 fixed to a shaft 26 disposed between the side plates 13 and 13 via a chain 24, and a sprocket 27 fixed to both ends of the shaft 26.
Remove the chain 28 from the sprocket 29 of the arm 14.
Are connected via. The driving method of the motor 21 may be appropriately selected from electric drive, hydraulic pressure, pneumatic pressure and the like.

In the segment carrier truck 11 of the present embodiment, first, the segments 1 manufactured in the segment yard on the ground are stacked in two steps through the pillow material 51, and they are hung on the vertical shaft 3 to form the segment carrier truck 11. Put. Next, the two-tiered segment 1a and segment 1b are transported into the shield pit. FIG. 3A shows a state in which the segment 1a and the segment 1b are stacked in two stages on the segment carrier 11.

Next, in the shield tunnel, the upper segment 1a
And the segment feeding mechanism 5 further conveys it to the front segment assembly mechanism (FIG. 3 (b)).

Next, the pillow material 51 mounted on the lower segment 1b to support the upper segment 1a is removed by using the pillow material removing mechanism 12. That is, the drive mechanism 15 is operated to rotate the removal arm 14, and the torque is used to laterally move the pillow material 51 placed on the lower segment 1b (FIG. 4 (a)). Although the pillow 51 initially moves on the upper surface of the lower segment 1b, it is replaced by the side plate 13 and is guided by the guide surface 17 formed on the side plate 13 as indicated by the arrow in the figure. It slides on 17 and eventually moves to the retracting portion 16 formed at the end of the guide surface 17. The pillow 51
After being locked by the retracting portion 16, the torque limiter 22 operates to limit the torque transmitted to the detaching arm 14.

After the pillow 51 is removed from the lower segment 1b in this manner, the lower segment 1b is unloaded from the carriage body 10 as shown in FIG. Carry to.

After unloading the segment 1b, the segment carrier 11 is returned to the shield pit entrance and the above procedure is repeated. The pillow 51 is suspended on the ground if necessary and is reused when it is stacked in two steps in the ground yard.

As described above, according to the segment carrier truck of this embodiment, the pillow material placed on the lower segment is automatically removed by the pillow material removing mechanism without manual labor. Work efficiency in removing materials is improved, and work in narrow spaces is eliminated,
The safety of workers is improved. Further, by automating the removal of the pillow, it is possible to automate the entire process relating to the segment loading.

Further, since the guide surface is formed on the side plate and the pillow is moved along the guide surface, the power of the motor can be relatively small.

(Second Embodiment) Next, a segment carrier according to the second embodiment will be described. The parts and the like that are substantially the same as those in the first embodiment are designated by the same reference numerals and the description thereof is omitted.

FIG. 5 (a) is a front view of the segment carrier truck 61 according to the second embodiment. As can be seen from the figure, the segment carrier truck 61 of this embodiment is also capable of stacking the upper segment 1a and the lower segment 1b on the carriage body 10 in two stages via the pillow material 51, as in the first embodiment. And the pillow material removing mechanism 62 for removing the pillow material 51 placed on the lower segment 1b is attached to the carriage main body 1
It is provided in front of 0 and behind, respectively.

As in the first embodiment, the pillow material removing mechanism 62 has a pair of side plates 63 arranged to face each other so as to sandwich the segment 1a and the segment 1b from both sides, and the side plate 63 is rotated about a horizontal axis. It is composed of a detachable arm 14 freely attached and a drive mechanism 15 for rotationally driving the detachable arm 14. Unlike the first embodiment, the tip of the detachable arm 14 is projectingly provided at both ends of the pillow 51. Is connected to the rod 52, and the side plate 63 has no guide surface.

In the segment carrier truck 61 of this embodiment, first, the segment 1 manufactured in the segment yard on the ground is hung on the vertical shaft 3 and stacked on the segment carrier truck 61, which is referred to as a segment 1b. Then
The driving mechanism 15 of the pillow removing mechanism 62 is operated in the reverse direction to rotate the removing arm 14 to the mounting side, and the pillow 51 is set on the segment 1b. Next, another segment 1 is stacked on it to form a segment 1a. Alternatively, a lift may be installed in the vertical shaft so that the segment transport vehicle can be moved up and down by the lift, and the segment transport vehicles that are two-tiered on the ground can be entirely suspended in the vertical shaft. In such a configuration, it is possible to save the trouble of hanging the segments one by one in the vertical shaft.

Next, as in the first embodiment, the two-tiered segments 1a and 1b are transported into the shield pit, and the upper segment 1a is unloaded at a predetermined position.
The drive mechanism 15 is operated to rotate the detaching arm 14, and the torque is used to rotate the pillow member 51 placed on the lower segment 1b (FIG. 5 (b)). After removing the pillow 51 from the lower segment 1b in this manner, the lower segment 1b is attached to the carriage body 1 as shown in FIG.
It is unloaded from 0, and is transported to the segment assembly mechanism further ahead by the segment supply mechanism 5.

After unloading the segment 1b, the segment carrier 61 is returned to the shield pit entrance, and the above procedure is repeated.

As described above, according to the segment carrier of the present embodiment, the pillow material mounted on the lower segment is automatically removed by the pillow material removing mechanism without manual labor. Work efficiency in removing materials is improved, and work in narrow spaces is eliminated,
The safety of workers is improved. Further, by automating the removal of the pillow, it is possible to automate the entire process relating to the segment loading.

Further, according to this embodiment, since the pillow member is connected to the tip of the removing arm and the pillow member is rotated in accordance with the rotation of the removing arm, the total amount of the pillow member is reduced. There is an effect that can be. In the case of the second embodiment, since the pillow is completely separated from the side plate and rotated,
It is preferable to use a motor having a power larger than that of the first embodiment.

If the shield shaft is short,
Since there is some time left in the segment transfer process, the second
If the amount of pillow material required is reduced by using the segment carrier truck of the embodiment, the excavation progresses, the shield pit becomes long, and the segment carrier process becomes critical in the entire process, the first embodiment An example segment carrier may be used to reduce loading time.

[0034]

As described above, according to the segment carrier truck of the present invention, a plurality of segments are stacked on each other through a predetermined pillow member and the carrier body which can be transported is sandwiched between the segments so as to face each other. A pillow material removing mechanism including a pair of arranged side plates, a removing arm rotatably attached to the side plates around a horizontal axis, and a drive mechanism for rotationally driving the removing arm is provided. A guide surface is formed to slidably guide and support the pillow according to the rotation of the detaching arm, and the pillow is retracted at the end of the guide surface when the segment is moved up and down. Since the evacuation portion is formed, the pillow material used when the segments are stacked in several stages can be automatically removed.

Further, the segment carrier truck of the present invention has a pair of side plates arranged so as to face each other so as to sandwich the segments from both sides on a carriage main body capable of stacking and transporting a plurality of segments through a predetermined pillow material. And a pillow material removing mechanism including a removing arm rotatably attached to the side plate about a horizontal axis and a drive mechanism for rotationally driving the removing arm, and the pillow material is provided at the tip of the removing arm. Since it is connected, the pillow material used when stacking the segments in several stages can be automatically removed.

[0036]

[Brief description of drawings]

FIG. 1 is a front view of a segment carrier truck according to a first embodiment.

FIG. 2 is a plan view of the same.

FIG. 3A is a diagram showing a state in which the segments are stacked in two stages on the segment carrier truck of the present embodiment, and FIG. 3B is a diagram showing a state in which the upper segment is lowered.

FIG. 4A is a diagram showing a state where a pillow material removing mechanism is operated to remove a pillow material on a lower segment, and FIG. 4B is a diagram showing a state where the lower segment is lowered.

5A is a front view showing a segment carrier according to a second embodiment, and FIG. 5B is a view showing its operation.

FIG. 6 is a diagram showing a procedure of transporting a segment in the related art.

[Explanation of Codes] 1, 1a, 1b Segment 10 Cart main body 11, 61 Segment transport cart 12, 62 Pillow material removing mechanism 13, 63 Side plate 14 Removal arm 15 Drive mechanism 16 Retracting part 17 Guide surface 51 Pillow material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chiharu Shimizu 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo headquarters (72) Inventor Yoshifumi Fukawa 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Address Incorporated company Obayashi Gumi Tokyo headquarters (72) Inventor Yukichi Inoue 2-3 Kandajimachi, Chiyoda-ku, Tokyo Incorporated company Obayashi Gumi Tokyo headquarters

Claims (2)

[Claims] 1. A pair of side plates arranged opposite to each other so as to sandwich the segments from both sides on a carriage main body capable of stacking and transporting a plurality of segments through a predetermined pillow material.
The side plate is provided with a pillow material removing mechanism including a removing arm rotatably mounted around a horizontal axis and a drive mechanism for rotationally driving the removing arm, and the side plate is adapted to rotate with the removing arm. And a guide surface for slidably guiding and supporting the pillow material is formed, and at the end of the guide surface, a retracting portion is formed for retracting the pillow material when the segment is moved up and down. The segment carrier truck. 2. A pair of side plates arranged to face each other so as to sandwich the segments from both sides on a carriage main body capable of stacking and transporting a plurality of segments via a predetermined pillow material.
A pillow material removing mechanism including a removing arm rotatably attached to the side plate about a horizontal axis and a drive mechanism for rotationally driving the removing arm is provided, and the pillow material is connected to a tip of the removing arm. A segment carrier truck that is characterized by