JP3567413B2 - Segment attitude converter - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a segment posture changing device as a tunnel lining body used in a shield method.
[0002]
[Prior art]
As is well known, a segment as a tunnel lining body is a curved plate-shaped one in which a circumferential surface of a cylindrical body is axially sliced and further divided into a plurality of circumferentially (for example, divided into five). By being connected in the circumferential direction and the axial direction inside and being assembled into a cylindrical body, it becomes a lining body covering the entire inner surface of the tunnel.
[0003]
When transporting such a segment, it is common to handle it in a flat position with its inner side facing upward (commonly referred to as a boat-type position) due to its stability and handling. is there. For example, when transporting a segment from the stockyard on the ground to the face, a plurality of segments are stacked on the ground in a flat position, and the stacked segments are collectively suspended in the shaft, A method has been adopted in which the carrier is directly mounted on a carrier at the bottom of the shaft, and the carrier is caused to travel toward the face.
[0004]
[Problems to be solved by the invention]
By the way, when the tunnel has a small diameter and the segment is small, it may be preferable to transport the pit in the downhole in a vertical position rather than stacking the segments flat. In such a case, in general, the segments suspended in the shaft in the state of being stacked in a flat state are raised upright at the bottom of the shaft to be placed in a vertical position, and are loaded on a carrier and transported in the shaft in that state.
[0005]
However, the work of erecting the segments and setting them in the vertical position as described above must rely on human power, so such work is not only inefficient and inefficient due to heavy labor but also ensures safety. This was a delicate task and required effective remedies.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an effective device that can easily and safely convert a segment from a flat position to a vertical position.
[0007]
[Means for Solving the Problems]
The present invention is a device for converting a segment in which a peripheral surface of a cylindrical body is divided in an axial direction and a circumferential direction from a flat posture to a vertical posture, and is rotatably supported around a horizontal axis. A turntable, and the turntable is provided at a front portion of the first support table, which is orthogonal to the first support table, at a front portion of the first support table. And a second support that can support the segment in a vertical position. The first support is horizontal and the second support is erected, and the segment is placed on the first support. By rotating the turntable forward by 90 degrees in a flat position, the segments are erected to be supported on the second support stand in a vertical position.
[0008]
In the present apparatus, it is preferable that the first support stand be capable of stacking a plurality of segments in a flat state, and the second support stand be capable of supporting the plurality of segments arranged in an upright state. Further, it is preferable to incorporate a transport mechanism capable of sending out the segments while keeping the segments in the vertical posture in the second support base. Further, it is preferable to provide a stopper that locks the turntable and restricts its rotation in a state where the first support stand and the second support stand are each horizontal.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a posture conversion device of the present invention will be described with reference to the drawings. The segment targeted by the device of the present embodiment is a small-sized steel used for a small-diameter tunnel, and its dimensions are, for example, about 1,250 mm in length, about 750 mm in width, about 75 mm in thickness, and about 60 kg in weight. The five rings are connected in the circumferential direction to form one ring. The five segments of one ring are handled collectively, and are transported to the bottom of the shaft in a stacked state (that is, stacked vertically in a boat shape). The horizontal transfer from the bottom to the face must be in a vertical position in order to be transferred in a small-diameter tunnel. Therefore, the position must be changed from a flat position to a vertical position at the bottom of the shaft. The apparatus of the present embodiment is installed at the bottom of a shaft to perform such a posture change of the segments, and is configured to collectively send out five segments for one ring, which are stacked flat, as a vertical posture as it is. It is.
[0010]
1 to 4 show a schematic configuration of the present apparatus, and FIGS. 5 to 8 show its operation. In these figures, reference numeral 1 denotes a turntable that can rotate about a horizontal axis C, and reference numeral 2 denotes a column that rotatably supports the turntable. The turntable 1 is provided with a first support 4 and a second support 5 between a pair of ring frames 3 located on both sides thereof. Reinforcing members 6 are fixed to the respective ring frames 3 so as to pass through the center positions thereof. The shafts 7 are rotatably supported by bearings 8 provided at the upper end of the column 2, whereby the rotating body 1 supports the shafts 7. It can rotate freely around the center. In addition, the position of the rotation center axis C of the turntable 1 (that is, the installation position of the shaft body 7) should be as close as possible to the position of the center of gravity of the entire turntable 1 in a state where the segments S are loaded on the first support 4 as described later. It is desirable that they are close to each other, so that the force required to rotate the turntable 1 is small. Reference numeral 9 denotes a handle for an operator to put his hand on when rotating the turntable 1.
[0011]
The first support 4 and the second support 5 provided inside the rotary table 1 are orthogonal to each other, and when the first support 4 is horizontal as shown in FIG. The table 5 stands upright at its front part, and when the turntable 1 rotates 90 degrees forward from this state and the second support table 5 becomes horizontal, the first support table 4 It is designed to stand upright in the section. The first support 4 is a planar frame composed of two parallel horizontal members 10 connecting the ring frames 3 and four vertical members 11 bridged between the horizontal members 10. The five segments S can be stacked in a flat state. The second support 5 is composed of two other cross members 12 connecting the ring frames 3 to each other, and two roller conveyors 13 (transport mechanisms) supported by the two horizontal members 12. The conveyor 13 is capable of supporting and transporting the segments S converted into the vertical posture while maintaining the vertical posture.
[0012]
In addition, one of the two columns 2 is provided with stoppers 14a and 14b for locking the turntable 1 on both upper sides thereof. The stoppers 14a and 14b are movable toward and away from the ring frame 3, and the stoppers 14a and 14b are inserted into the ring frame 3 except when the turntable 1 is rotated, so that the distal ends thereof are reinforced. 6 to prevent the turntable 1 from rotating inadvertently.
[0013]
That is, as shown in FIG. 1, the rotary table 1 is rotated from the state where the rotary table 1 is locked by the stoppers 14a and 14b while the first support table 4 is horizontal and the second support table is rotated. When the rotary table 5 is to be horizontal, one of the stoppers 14a is removed to allow the rotation of the rotary table 1, and when the rotary table 1 is rotated in this state, the other stopper is stopped at a position where the second support table 5 is in the horizontal position. 14b is engaged with the reinforcing member 6 and the rotation is stopped there by itself. In this state, the stopper 14a is inserted, and both stoppers 14a and 14b engage with both sides of the reinforcing member 6 to rotate the turntable 1 in that state. It can be locked. When returning to the original state from that state, the stopper 14a is removed and the turntable 1 is rotated in the opposite direction, and the reinforcing member 6 engages with the stopper 14b at a position where the first support base 4 is horizontal. In this case, the rotation stops by itself, and the stopper 14a may be inserted and locked in that state.
[0014]
Further, as shown in FIGS. 5 to 8, a roller conveyor 15 for horizontally transporting the segments S is laid in front of the present apparatus, and the second support 5 is horizontal and the segments S are placed vertically. In the attitude, the roller conveyor 13 of the second support 5 and the roller conveyor 15 are naturally continuous, and therefore, the segment S in the vertical attitude is pushed out from the second support 5 as it is, thereby allowing the roller conveyor to move. 15 and the roller conveyor 15 allows the segment S to be horizontally transported to a transport trolley or a face as it is.
[0015]
The operation of the apparatus having the above configuration and the method of using the same will be described with reference to FIGS. As described above, when the first support base 4 is horizontal, the second support base 5 stands upright at its front part, and in this state, as shown in FIG. The segments S are suspended from above, and five segments S for one ring are stacked on the first support base 4 as shown in FIG. At this time, the front portions of the segments S are brought into contact with the roller conveyor 13 of the second support 5. Then, when the turntable 1 is rotated forward by 90 degrees from that state, the second support stand 5 becomes horizontal and the first support stand 4 stands upright at the rear thereof as shown in FIG. The segments S stacked flat on the support table 4 naturally stand up, and are supported by the roller conveyor 13 of the second support table 5 in a state where they are arranged in a vertical posture. Therefore, as shown in FIG. 8, the segment S in the vertical position may be pushed forward, transferred to the roller conveyor 15, and further transported forward.
[0016]
According to the above-mentioned device, the posture of the segment S can be easily and safely changed from the flat position to the vertical position only by stacking the segments S on the first support 4 and rotating the turntable 1 by 90 degrees. The work efficiency can be remarkably improved as compared with the conventional work in which the worker lifts up the segments one by one and stands up, and the safety of the work can be secured.
[0017]
In addition, since the posture conversion of a plurality of segments S (five sheets for one ring in this example) can be performed collectively, the work efficiency is excellent, and the plurality of segments S in the vertical posture are densely arranged. Since they are self-sustaining in their state, they do not fall over. In addition, if the five segments S are appropriately bundled, the falling can be more reliably prevented.
[0018]
Further, since the roller conveyor 13 is incorporated in the second support table 5, the segment S in the vertical position can be sent out without being lifted, and the roller conveyor 15 is provided so as to be continued to the subsequent stage. Therefore, horizontal transport can be performed forward.
[0019]
In addition, the provision of the stoppers 14a and 14b can prevent the turntable 1 from being rotated carelessly, and can be stopped at a fixed position by itself when the turntable 1 is rotated. However, workability and safety can be sufficiently ensured.
[0020]
The above-mentioned apparatus has a very simple configuration. In particular, the column 2, the ring frame 3, and the reinforcing member 6 are formed by processing a small-section H-shaped steel, and the cross members 10, 12 and the vertical members 11 are angle steel members. By using general-purpose products for the bearing 8 and the roller conveyor 13, this device can be manufactured sufficiently inexpensively and easily.
[0021]
The preferred embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and the first support base for supporting the segments in the flat position and the second support for supporting the segments in the vertical position are provided. The detailed configuration is arbitrary as long as the configuration has the rotary table with the two support tables, and various design changes are possible.
[0022]
For example, in the apparatus of the above-described embodiment, the turntable 1 is rotated manually, but if necessary, a power source such as a motor or jack for rotating the turntable 1 and an appropriate power transmission mechanism may be provided. Conceivable.
[0023]
Further, in the apparatus of the above-described embodiment, the roller conveyor 13 as a transport mechanism is incorporated in the second support 5, but this is not always the case, and the second support 5 is the same as the first support 4. It does not preclude a simple planar frame shape. In this case, the segment S converted into the vertical position may be lifted from the second support table 5 using a crane and transferred to a subsequent stage.
[0024]
Alternatively, it is conceivable to incorporate the same roller conveyor 13 as the second support 5 or another type of transport mechanism into the first support 4. In this case, a horizontal transport device such as a roller conveyor is provided in front of the present device so as to be continuous with the transport mechanism incorporated in the first support table, and the horizontal transport device causes the segment S in the flat position to be placed in the first position. It is conceivable that the guide is guided to the transport mechanism of the support base.
[0025]
Although the overall configuration is complicated, the above-described transport mechanisms are incorporated into both the first support and the second support, and the transport mechanisms are driven by a drive source. If a horizontal transport device is provided before and after each to drive them by a drive source, and furthermore, a rotary table is configured to be rotated by a drive source, and they are configured to be controlled in an interlocking manner, the segments in a flat posture are provided. Is automatically taken into the first support table, and the rotary table is automatically rotated to change the posture, the segment in the vertical position is automatically sent out from the second support table, and further transported forward. It is not impossible to realize a complete automation of a series of operations related to the posture change.
[0026]
Of course, the apparatus of the present invention can be applied not only to the case where the segment is changed from the horizontal position to the vertical position, but also to the case where the segment is changed from the vertical position to the horizontal position by the reverse operation (for example, the horizontal transfer as the vertical position (When it is necessary to return to the flat position when handling the segment). In addition, the present invention is not limited to handling one ring of segments at a time, but also a case of handling a larger number of segments at a time, or a case where one segment can stand alone (or can be prevented from falling over). Needless to say, the posture can be independently changed in (case), and the size, weight, and type of the target segment are not limited at all.
[0027]
【The invention's effect】
As described above, the present invention has a rotatable turntable including a first support stand for supporting a segment in a flat posture and a second support stand for supporting a segment in a vertical posture in an orthogonal state. Therefore, the segment can be erected and converted to the vertical posture only by placing the segment flat on the first support base and rotating the turntable 90 degrees, so that the posture changing operation of the segment can be simplified. It can be performed easily and safely with the device, and can significantly improve the work efficiency and secure the work safety compared to the conventional work that must be done by complete manual work. What you get.
[0028]
In particular, if the posture conversion of multiple segments can be performed collectively, the work efficiency will be better, and the multiple segments that have been placed in the vertical position will naturally stand in a densely arranged state and they will fall over. It doesn't even happen. In addition, if a transport mechanism such as a roller conveyor is incorporated in the second support table, the segments in the vertical position can be sent out without being lifted. In addition, providing a stopper for locking the turntable can prevent the turntable from accidentally rotating, and the turntable can be stopped at a fixed position by itself, ensuring workability and safety. I can do it.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a schematic configuration of a posture conversion device according to an embodiment of the present invention.
FIG. 2 is a front view of the same.
FIG. 3 is a plan view of the same.
FIG. 4 is a side view of the same.
FIG. 5 is a side view showing an operation of the apparatus, and showing a state where the segments are being loaded on the first support base.
FIGS. 6A and 6B are diagrams showing a state in which segments are stacked on a first support base, wherein FIG. 6A is a side view and FIG. 6B is a front view.
FIGS. 7A and 7B are diagrams showing a state in which the turntable is rotated to place the segments in a vertical position, wherein FIG. 7A is a side view and FIG. 7B is a plan view.
FIG. 8 is a side view showing a state where the segments are horizontally transported forward.
[Explanation of symbols]
S segment C axis 1 turntable 2 support 4 first support 5 second support 13 roller conveyor (transport mechanism)
14a, 14b Stopper

Claims (4)

An apparatus for converting a segment in a form in which a circumferential surface of a cylindrical body is divided in an axial direction and a circumferential direction from a flat posture to a vertical posture,
It has a turntable that is rotatably supported around a horizontal axis,
A first supporter that supports the segment in a flat posture; and a rotary support provided at a front portion of the first supporter at a right angle to the first supporter to vertically position the segment. And a second support base that can be supported by
In a state where the first support base is horizontal and the second support base is erected, the segment is placed flat on the first support base and the turntable is rotated forward by 90 degrees, whereby the segment is moved. A segment attitude conversion device, wherein the apparatus is erected and supported on the second support base in a vertical attitude. 2. The apparatus according to claim 1, wherein the first support is capable of stacking a plurality of segments in a flat state, and the second support is capable of supporting the plurality of segments arranged in an upright state. An attitude conversion device for the described segment. 3. The segment attitude conversion device according to claim 1, wherein a transport mechanism capable of sending the segment while keeping the segment in a vertical orientation is incorporated in the second support base. 4. The stopper according to claim 1, wherein said first support base and said second support base are each provided with a stopper for locking said turntable and restricting its rotation in a state where said second support stand is horizontal. Posture conversion device for segment.

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