JP7128052B2 - segment carrier - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transporting device for segments constituting a shield tunnel, and more particularly to a segment transporting device capable of transporting a plurality of segments in a tunnel in a vertically independent standing posture without interfering with a following carriage.

Arc-shaped segments made of steel or reinforced concrete are generally used for shoring for the primary lining of shield tunnels.
When constructing a shoring using arc-shaped segments, it is necessary to mount the segments on a truck at the entrance of the tunnel and transport them to the vicinity of the face where the segments are assembled.
Conventionally, as this type of segment conveying device, the system disclosed in Patent Document 1 is known.

The segment conveying device disclosed in Patent Document 1 includes a support base that is installed on the platform of a truck on which the segments are mounted and that supports the segments in a state in which the central axis of the arc of the segment is parallel to the traveling direction of the truck. consists of a plate-like member having a curved surface in a direction transverse to the traveling direction of the truck, and this support base is pivotally supported by a pin so that it can be raised and lowered on the loading platform, and the support base can be raised and lowered by means of a jack. .

JP 2010-53533 A

In the segment conveying device disclosed in Patent Document 1, since the support table that supports the segments is configured to be tiltable, wide segments can be conveyed without being restricted by the cross-sectional shape of the segments. .
Therefore, even if following carriages such as a hydraulic system carriage, a power supply carriage, a compressor carriage, and a substation carriage are arranged in parallel with the track on which the segment carriage runs in the tunnel tunnel, the segment to be transported is It is possible to expand the width of the segment without interfering with the following bogie.

However, since the segment mounting surface of the support stand of the segment transport method shown in Patent Document 1 is a curved surface in which the central axis of the arc of the segment is parallel to the traveling direction of the carriage, when the support stand is in a vertical standing posture, The segment easily slides down from the support base. Therefore, only one segment can be placed. As a result, the transport efficiency of the segments decreases, and the number of segment transport trucks corresponding to the number of segments placed along the inner circumference of the tunnel used for the support for the primary lining is required, resulting in the need for segment transport equipment. There is a problem that it is large and complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a segment conveying device capable of conveying segments in a self-supporting standing posture and also capable of conveying a plurality of segments at once. to provide.

In order to achieve the above-mentioned object, the present invention provides a cylindrical concave inner peripheral surface and a cylindrical convex outer peripheral surface located at both ends in the thickness direction, and a circumferential direction of the inner peripheral surface and the outer peripheral surface. A segment conveying device for conveying an arc-shaped segment having a pair of end face portions located at both ends of the segment and a pair of side face portions located at both ends in a width direction orthogonal to the circumferential direction, comprising a carriage, a plurality of The pair of end face portions of the segment are arranged with a gap in the traveling direction of the truck, and the inner peripheral face and the outer peripheral face are brought into contact with each other and overlapped in the thickness direction to form the pair of side face portions of the segment. and a back plate capable of coming into contact with the outer peripheral surface of the segment positioned at the end in the overlapping direction. A segment mounting table provided swingably on the carriage about parallel axes; and a segment mounting table having the segment mounting plate extending in the horizontal direction and the rear plate extending in the vertical direction. A rocking mechanism for rocking the segment mounting table between a standing posture and a lying posture in which the segment mounting plate extends in the vertical direction and the back plate extends in the horizontal direction. do.
Further, according to the present invention, one side surface of the pair of side surfaces of the plurality of segments is placed on the mounting plate, and the outer peripheral surface of the segment positioned at the end in the overlapping direction is placed on the mounting plate. A fixing band is provided for fixing the plurality of segments to the segment mounting table while being in contact with the rear plate.
Further, according to the present invention, one side surface of the pair of side surfaces of the plurality of segments is placed on the mounting plate, and the outer peripheral surface of the segment positioned at the end in the overlapping direction is placed on the mounting plate. It is characterized by comprising a pair of side plates that can contact a pair of end face portions located at both ends of the plurality of segments in the circumferential direction while being in contact with the back plate.
Further, in the present invention, the swinging mechanism includes a support shaft projecting from the outer surface of each of the side plates on an axis parallel to the traveling direction of the truck, and a support shaft facing the outer surface of each of the side plates. and a pair of brackets provided on the carriage and rotatably supporting the support shafts.
Further, in the present invention, the swinging mechanism includes jacks arranged on the carriage corresponding to the respective brackets and extending in a direction perpendicular to the traveling direction of the carriage and swinging the segment mounting table. The jack has a cylinder and a piston rod, one end of the cylinder is pivotably connected to the truck, and the projecting end of the piston rod projecting from the other end of the cylinder is connected to the support shaft. is pivotably connected to a connecting member provided on the outer surface of each of the side plates located above the axis of the side plate.
Further, according to the present invention, the back plate has an inner surface capable of coming into contact with the outer peripheral surface of the segment and an outer surface opposite to the outer peripheral surface of the segment, and contacts the outer surface of the back plate. A member is provided, and a stopper is provided on the carriage against which the abutting member abuts when the segment mounting table is in the lying posture, and the segment placing table is in the lying posture such that the abutting member abuts against the stopper. It is characterized by being held by
Further, according to the present invention, the bogie includes a vehicle body frame, and a concave portion is formed in the vehicle body frame where the segment mounting base is arranged to be recessed downward to allow the segment mounting base to swing. It is characterized by

According to the present invention, the segment mounting table stacks a plurality of segments in the thickness direction of the segments with the inner peripheral surfaces and the outer peripheral surfaces of the segments in contact with each other. Since the plate and the back plate contact the outer peripheral surface of the segment located at the end in the stacking direction, multiple segments are stacked and placed on the segment mounting table without causing collapse of cargo. As a result, it is possible to reduce the number of trolleys including the segment mounting table, and it is possible to reduce the cost of the segment transport device, thereby improving the segment transport efficiency and reducing the transport cost. advantage over
In addition, since the swinging mechanism for swinging the segment mounting table between the standing posture and the lying posture is installed on the carriage, the segment placing table can be stably swung between the standing posture and the lying posture, and the segment A plurality of segments mounted on a mounting table can be transported in a vertically independent posture, and a plurality of segments stacked and mounted on the segment mounting table can be held in a vertically independent posture. This is advantageous for transporting larger segments.
In addition, according to the present invention, by using the segment fixing band on the segment mounting table, even if an external force such as a large shaking acts on the segment mounting table including the carriage, the load of the segments mounted on the segment mounting table collapses and Falling off can be prevented.
In addition, according to the present invention, the segment mounting table includes a pair of side plates that can abut against a pair of end face portions positioned at both ends of the plurality of segments in the circumferential direction. It can be stably placed, and a plurality of segments can be stably and reliably transported in a vertically independent posture.
Further, according to the present invention, the support shaft protruding from the side plate and the bracket that rotatably supports the support shaft are used to swingably support the segment mounting table to the carriage. The segment mounting table on which the segment is mounted can be stably swung between the standing posture and the lying posture.
Further, according to the present invention, since the jack is used in the rocking mechanism for rocking the segment mounting table between the standing posture and the lying posture, the configuration of the rocking mechanism can be simplified and the segment mounting table can be used. This is advantageous for reliable and stable rocking.
Further, according to the present invention, the abutting member provided on the back plate of the segment mounting table is configured to abut against the stopper provided on the carriage. It can be reliably swung to and held in a lying posture.
Further, according to the present invention, a concave portion that is recessed downward to allow the segment mounting table to swing is formed in a portion of the vehicle body frame where the segment mounting table is swingably arranged. It is possible to reduce the height of the pivotal support position of the segment mounting table that is pivotally supported, and to reduce the height of the entire segment conveying device including the segment mounting table. be advantageous.

It is a top view which shows an example of the segment conveying apparatus which concerns on this invention. FIG. 2 is a front view of the segment carrier along line AA of FIG. 1; FIG. 4 is a side view showing a state in which segments are being transported within a shield tunnel by the segment transporting device according to the present embodiment; FIG. 10 is a side view showing a case where the segment transported by the segment transporting device according to the present embodiment is changed to a lying posture; FIG. 10 is a side view showing a state in which the segment on the segment mounting table that has been swung to a lying posture within the shield tunnel is lifted by the chain block.

An embodiment embodying a segment conveying device according to the present invention will be described below with reference to FIGS. 1 to 5. FIG.
1 to 4, the segment transport device 10 includes a carriage 20, a segment mounting table 30, and a swing mechanism 40. As shown in FIG.
The trolley 20 is mounted with the segment mounting table 30 and the swing mechanism 40. The trolley 20 includes a body frame 202 extending in the traveling direction of the trolley 20, and a longitudinal direction, which is the extending direction of the body frame 202. It has front and rear axles 204 which are rotatably supported parallel to each other at both lower ends of the vehicle, and wheels 206 which are fixed to the left and right ends of the front and rear axles 204, respectively.
As shown in FIG. 3, such a truck 20 is installed so as to be able to travel on rails 6 temporarily laid along the longitudinal direction of the shield tunnel 4 at the bottom of the shield tunnel 4 via wheels 206 .
In addition, as shown in FIG. 2, a recessed portion 202A is formed in the central portion of the body frame 202 located between the front and rear axles 204 on which the segment mounting table 30, which will be described later, is arranged.
This concave portion 202A is used to swing the segment mounting table 30, which will be described later, at the lowest possible position on the carriage 20. The length of the segment mounting table 30 extending in the traveling direction of the vehicle body 20 Correspondingly, it has a width extending in the traveling direction of the vehicle body 20, and this width exhibits a shape that crosses the direction perpendicular to the traveling direction of the vehicle body 20. As shown in FIG.
The carriage 20 is moved by a towing vehicle with an engine (not shown).

As shown in FIGS. 1 and 2, the arc-shaped segment 2 mounted on the segment mounting table 30 has a pair of end face portions 2A located at both ends in the circumferential direction and a pair of end face portions 2A at both ends in the width direction orthogonal to the circumferential direction. It has a pair of side surface portions 2B located, a circumferential inner circumferential surface 2C, and a circumferential outer circumferential surface 2D.
That is, the segment 2 has a cylindrical concave inner peripheral surface 2C and a cylindrical convex outer peripheral surface 2D located at both ends in the thickness direction, and the inner peripheral surface 2C and the outer peripheral surface 2D at both ends in the circumferential direction. It has a pair of end surface portions 2A positioned and a pair of side surface portions 2B positioned at both ends in the width direction orthogonal to the circumferential direction.
When a plurality of segments 2, for example five segments 2 for one ring as shown in FIG. It is mounted on the mounting table 30 .

The segment mounting table 30 is for mounting a plurality of segments 2, and is arranged on the truck 20 in the concave portion 202A of the truck 20 so as to be swingable about an axis L parallel to the traveling direction of the truck 20. ing.
Further, as shown in FIGS. 1 and 2, the segment mounting table 30 extends in the traveling direction of the truck 20 (the direction of the arrow X) in the concave portion 202A of the truck 20 and has a horizontal plane parallel to the axis L. two mounting plates 302, side plates 304 provided vertically and parallel to each other at both ends of the mounting plate 302 in the extending direction, and side plates 304 positioned between the two side plates 304 and vertically above the mounting plate 302. and a back plate 306 extending in the traveling direction of the carriage 20. A plurality of segments 2 are placed in an area surrounded by the placing plate 302, the side plates 304, and the back plate 306. A storage area 30A for storage is constructed.

For this reason, a pair of end face portions 2A of a plurality of segments 2 are arranged on the mounting plate 302 at intervals in the traveling direction of the carriage 20, and the inner peripheral face 2C and the outer peripheral face 2D of the segments 2 are in contact with each other. A plurality of segments 2 are stacked in contact with each other in the thickness direction, and the lower end side portion 2B of the pair of side portions 2B of the plurality of segments 2 thus stacked is placed.
Each side plate 304 is capable of coming into contact with a pair of end surface portions 2A located at both circumferential ends of the plurality of segments 2 .
In addition, the back plate 306 can come into contact with the end portion in the overlapping direction, that is, the outer peripheral surface 2D of the segment 2 positioned closer to the back plate 306 . The rear plate 306 has a curved surface 306A corresponding to the outer peripheral surface 2D of the segment 2. As shown in FIG.

The swinging mechanism 40 swings the segment mounting table 30 about the axis L between the upright position shown in FIG. 3 and the laid down position shown in FIG.
1 to 4, the rocking mechanism 40 is protruded from the outer surface of each side plate 304 with its axis aligned with the axis L parallel to the traveling direction of the truck 20. Support shafts 402 and brackets 404 provided on the carriage 20 facing the outer surfaces of the side plates 304 and opposite both ends in the width direction of the recess 202A of the vehicle body frame 202, and rotatably supporting the support shafts 402. , and are arranged on the carriage 20 so as to extend in a direction orthogonal to the traveling direction of the carriage 20 in correspondence with the respective brackets 404, for swinging the segment mounting table 30. It includes a pressure type jack 406 .
The jack 406 has a cylinder 4062 and a piston rod 4064. One end of the cylinder 4062 is pivotably connected to a support portion 408 projecting from the carriage 20, and the piston rod 4064 projects from the other end of the cylinder 4062. are pivotably connected to connecting members 409 provided on the outer side surfaces of the side plates 304 positioned above the axial center of each support shaft 402 .
One end of the L-shaped connecting member 409 is fixed to the outer surface of the side plate 304, and the other end of the L-shaped connecting member 409 is the tip of the piston rod 4064. is pivotally connected to the

The segment conveying device 10 includes a fixing band 50 that fixes the segments 2 placed in the storage area 30A of the segment placing table 30 to the segment placing table 30 .
As shown in FIGS. 1 and 2, a hook portion 52 for hooking the central portion of the fixing band 50 is protruded from the center of the front end of the mounting plate 302 in the storage area 30A of the segment mounting table 30. As shown in FIGS. 1 and 2, a pair of hooks 54 on which both ends of the fixing band 50 are hooked are provided on the upper end side of the outer surface of the back plate 306 of the segment mounting table 30 opposite to the segment abutment side. are projected at predetermined intervals in a direction parallel to the traveling direction of the carriage 20 .
1, a pair of contacting members 56 extend from the back plate 306 parallel to the traveling direction of the carriage 20, as shown in FIG. It is located at both ends of the direction.
Further, the carriage 20 is provided with a pair of stoppers 58 with which the respective contact members 56 abut when the segment mounting table 30 is in a fallen posture. retained by contact.

In addition, as shown in FIGS. 3 and 5, in the shield tunnel 4, following carriages 60 such as a carriage for a hydraulic system to move the shield machine, a power supply carriage, a compressor carriage, and a substation carriage are laid in the shield tunnel 4. It is arranged so as to be able to run on the rails 62 that are installed. Furthermore, inside the shield tunnel 4, a soil discharge pipe 64 for discharging mud generated during tunnel excavation and a vacuum pipe 66 for discharging water gushing out into the tunnel are attached.
As shown in FIG. 5, on the ceiling of the shield tunnel 4, there is a chain block 70 which lifts up the segments 2 stacked on the segment mounting table 30 in the lying posture and transports them to the segment assembling position. It is installed so as to be able to travel via rails 72 .

Next, the operation of the segment conveying device 10 shown in this embodiment will be described.
When transporting the segment 2 within the shield tunnel 4, first, at the entrance of the shield tunnel 4, the jack 406 of the swing mechanism 40 is contracted to swing the segment mounting table 30 to the laid-down posture shown in FIG. . At this time, since the abutting member 56 abuts against the stopper 58, the segment mounting table 30 is held in the laid-down posture.
In this state, one side portion 2B of the pair of side portions 2B of the segment 2 is in contact with the mounting plate 302, and the outer peripheral surface 2D of the segment 2 is arranged to face the curved surface 306A of the rear plate 306. A plurality of segments 2 are stored in the storage area 30A of the segment mounting table 30 by sequentially stacking the segments 2 in the thickness direction.
As shown in FIGS. 1 and 2 , the central portion of the fixing band 50 is hooked on the hook portion 52 for the plurality of segments 2 stored in such an overlapping state, and the both ends of the fixing band 50 are hooked to the center of the hook portion 52 . A plurality of segments 2 are hooked on a pair of hooks 54 provided on the outer surface of the back plate 306, and the segments 2 are placed on the segment mounting table. Fixed at 30.

Next, by extending the jack 406 of the rocking mechanism 40, the segment mounting table 30 in the lying posture on which the plurality of segments 2 are placed is rocked to the standing posture shown in FIG. in a vertical, self-supporting position. In this embodiment, with the piston rod 4064 of the jack 406 fully extended, the segment mounting table 30 is in the upright posture.
Next, by towing the truck 20 with a towing vehicle with an engine, the truck 20 is transported to the segment assembly position together with the segment mounting table 30 while the plurality of segments 2 are held in a vertically independent posture. When the carriage 20 reaches the segment assembly position, the jack 406 of the rocking mechanism 40 is contracted to rock the segment mounting table 30 to the laid-down position shown in FIG. At this time, since the abutting member 56 abuts against the stopper 58, the segment mounting table 30 is held in the laid-down posture.
As shown in FIG. 5, the segments 2 stacked on the segment mounting table 30 in the lying posture are lifted by the chain block 70 and transported to the segment assembly site.

According to this embodiment, the following effects are obtained.
The segment mounting base 30 is a mounting plate 302 on which one side surface portion 2B of the plurality of segments 2 is mounted while the inner peripheral surfaces 2C and the outer peripheral surfaces 2D of the segments 2 are in contact with each other and stacked in the thickness direction of the segments. Since the back plate 306 is provided with which the outer peripheral surface 2D of the segment 2 located at the end in the overlapping direction abuts, a plurality of the segments 2 can be stacked without causing collapse of the cargo, and the segment mounting table can be used. As a result, the number of carriages including the segment mounting table 30 can be reduced, and the cost of the entire segment conveying device 10 can be reduced, thereby improving the segment conveying efficiency. This is advantageous in reducing transportation costs.
Further, since the swinging mechanism 40 for swinging the segment mounting table 30 between the standing posture and the lying posture is installed on the carriage 20, the segment placing table 30 can be stably swung between the standing posture and the lying posture. In addition, the plurality of segments 2 mounted on the segment mounting table 30 can be transported in a vertically independent posture, and the plurality of segments 2 stacked on the segment mounting table 30 can be transported. Since it can be held in a vertical, self-supporting position, it is advantageous for transporting larger segments 2 .

Further, according to the present embodiment, by using the segment fixing band 50 on the segment mounting table 30, even if an external force such as a large shaking acts on the segment mounting table 30 including the carriage 20, the segments can be mounted on the segment mounting table 30. It is possible to prevent collapse and falling of the loaded segment 2 in advance.
Furthermore, since the segment fixing band 50 is used, even if the hydraulic pressure supplied to the jack drops or leaks due to trouble in the hydraulic system during transportation of the segment, and the jack 406 breaks down, the segment mounting table 30 can still This is advantageous in solving problems such as the segment 2 dropping out of the segment mounting table 30 simply by swinging from the standing position to the lying position.
Further, according to the present embodiment, the segment mounting table 30 includes the side plates 304 that can contact the pair of end face portions 2A positioned at both ends of the plurality of segments 2 in the circumferential direction. can be stably placed on the segment mounting table 30, and the plurality of segments 2 can be stably and reliably transported in a vertically independent posture.
Further, according to the present embodiment, the support shafts 402 projecting from the side plates 304 and the brackets 404 that rotatably support the support shafts 402 are used to swingably support the segment mounting table 30 to the carriage 20 . Therefore, the segment mounting table 30 with the plurality of segments 2 mounted thereon can be stably swung between the standing posture and the lying posture.
Further, according to the present embodiment, since the jack 406 is used in the rocking mechanism 40 for rocking the segment table 30 between the standing posture and the lying posture, the structure of the rocking mechanism 40 can be simplified. Moreover, it is advantageous in rocking the segment mounting table 30 reliably and stably.
Further, according to the present embodiment, the contact member 56 provided on the back plate 306 of the segment mounting table 30 is configured to contact the stopper 58 provided on the carriage 20 . By abutting, the segment mounting table 30 can be reliably swung and held in the laid-down posture.
Furthermore, according to the present embodiment, the recessed portion 202A is formed in the central portion of the vehicle body frame 202 in which the segment mounting table 30 is oscillatably arranged. Correspondingly, the height of the support position of the segment mounting table 30 rotatably supported by the bracket 404 via the support shaft 402 can be lowered. Along with this, the segment mounting table 30 can be swung to the standing posture and the lying posture at the low pivot position, and the overall height of the segment conveying device including the segment mounting table 30 can be reduced. It is advantageous for moving the segment transporter within the shield tunnel and for transporting larger segments.

In the embodiment, the case where the jack 406 is used for the swing mechanism 40 has been described, but the present invention is not limited to this, and various conventionally known gear mechanisms such as a gear mechanism, an electric actuator, and a manual chain mechanism are used. However, using the jack 406 as in the embodiment is advantageous in simplifying the configuration of the rocking mechanism 40 .

2 Segment 4 Shield Tunnel 2A A pair of end surface portions of the segment 2B A pair of side surface portions of the segment 2C The inner peripheral surface of the segment 2D The outer peripheral surface of the segment 10 Segment conveying device 20 Cart 202A Recess 30 Segment mounting table 302 Segment mounting plate 304 Side plate 306 rear plate 306A curved surface 40 rocking mechanism 402 support shaft 404 bracket 406 jack 408 support portion 409 connecting member 50 fixing band 52, 54 hook portion 56 contact member 58 stopper

Claims (7)

A cylindrical concave inner peripheral surface and a cylindrical convex outer peripheral surface located at both ends in the thickness direction, a pair of end surface portions located at both ends of the inner peripheral surface and the outer peripheral surface in the circumferential direction, and the peripheral A segment conveying device for conveying an arc-shaped segment having a pair of side portions located at both ends in a width direction orthogonal to the direction,
a trolley;
The pair of end face portions of the plurality of segments are spaced apart in the traveling direction of the truck, and the inner and outer peripheral surfaces are brought into contact with each other and overlapped in the thickness direction to form the pair of segments. A mounting plate on which one of the side portions can be placed, and a rear plate capable of coming into contact with the outer peripheral surface of the segment located at the end in the overlapping direction. a segment mounting table provided swingably on the carriage about an axis parallel to the direction;
A standing posture of the segment mounting table in which the mounting plate extends in the horizontal direction and the back plate extends in the vertical direction, and the mounting plate extends in the vertical direction and the back plate extends in the horizontal direction. a swinging mechanism for swinging the segment mounting table between the lying down posture and the
A segment conveying device comprising: One side portion of the pair of side portions of the plurality of segments is placed on the mounting plate, and the outer peripheral surface of the segment positioned at the end in the overlapping direction is brought into contact with the back plate. a fixing band for fixing the plurality of segments to the segment mounting table in the state of
2. The segment conveying device according to claim 1, characterized in that: One side portion of the pair of side portions of the plurality of segments is placed on the mounting plate, and the outer peripheral surface of the segment positioned at the end in the overlapping direction is brought into contact with the back plate. a pair of side plates capable of abutting against a pair of end face portions located at both ends of the plurality of segments in the circumferential direction,
3. The segment conveying device according to claim 1 or 2, characterized in that: The rocking mechanism includes a support shaft projecting from the outer surface of each of the side plates with an axis parallel to the traveling direction of the truck, and a support shaft provided on the truck so as to face the outer surface of each of the side plates. and a pair of brackets that rotatably support the support shafts,
4. The segment conveying device according to claim 3, characterized in that: The rocking mechanism includes jacks that are arranged on the carriage in correspondence with the respective brackets and extend in a direction perpendicular to the traveling direction of the carriage and rock the segment mounting table,
the jack has a cylinder and a piston rod;
One end of the cylinder is pivotably connected to the carriage, and the protruding end of the piston rod protruding from the other end of the cylinder is provided on the outer surface of each of the side plates positioned above the axial center of the support shaft. is pivotably connected to the connecting member,
5. The segment conveying device according to claim 4, characterized in that: The back plate has an inner surface that can contact the outer peripheral surface of the segment and an outer surface that is opposite to the outer peripheral surface of the segment,
an abutting member is provided on the outer surface of the back plate, and a stopper is provided on the carriage with which the abutting member abuts when the segment mounting table is in the laid-down posture;
The lying position of the segment mounting table is held by the abutting member abutting against the stopper.
The segment conveying device according to any one of claims 1 to 5, characterized in that: The bogie includes a body frame,
A concave portion is formed in a portion of the vehicle body frame where the segment mounting base is arranged, and is recessed downward to allow the segment mounting base to swing.
The segment conveying device according to any one of claims 1 to 6, characterized in that:

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