JPH07305327A - Equipment and materials carrying device - Google Patents

Abstract

PURPOSE:To improve workability by carrying concrete onto an embankment by means of a winding device on a frame provided on a dam embankment, and placing concrete while alternately expanding/contracting first and second leg parts so as to jack up the frame. CONSTITUTION:Concrete carried on an embankment by means of a winding device 54 is placed on the upper face of the embankment 1 by a dump car 24. Then in a frame 7, the outside leg part 37 is extended and standingly' provided on a two times before placed layer (n-1) on the lower stream side of the embankment 1, and the inside base part 30 is positioned on the upper stream side of the outside base part 36. Next, after placing the placed layer (n+1) while contacting the inside leg part 31 with the placed layer (n), the leg 31 is extended so as to step up, and the leg 37 is contracted. After moving the outside base part 36 on the upper stream side, the leg 37 is contacted with the layer (n+1) so as to step up the frame 7. After placing the layer (n+2), similarly the respective parts are worked together, the frame 7 is jacked up, and the base part 30 is moved on the upper stream side. Hereby, a concrete kneading facility can be provided on a river bed, and easily executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material / material carrying device for carrying materials such as concrete and materials for concrete pouring.

[0002]

2. Description of the Related Art RCD (Roller Compacted D) has conventionally been used to construct concrete in a wide area for dam construction.
am-concrete) construction method and extended layer casting construction method are adopted. In this construction method, concrete placing layers are stacked one by one on the dam embankment already formed by concrete placing, and the dam embankment is placed above. It is something to build. And
In the above case, it is necessary to transport materials such as concrete and equipment for concrete pouring for new pouring on the already formed dam levee.
Concrete kneading equipment is installed near the dam ridge top and at a position slightly higher than the ridge top, and a cable crane is installed at a higher position than this to transport materials and equipment, and to excavate the dam surface. There is adopted a method in which an incline facility is provided to unload the equipment and materials on the dam bank using the incline facility, and further, a belt conveyor conveys the equipment from the riverbed.

[0003]

When the above cable crane is used, there are mainly the following problems. (1) A wide site for installing concrete kneading equipment and cable cranes is required near the dam ridge top, so it is necessary to largely scrape off the mountains near the dam ridge top to secure the site, and to preserve the natural environment. Not preferable from the viewpoint of landscape. (2) Since the bucket of the cable crane moves above the worker, more attention must be paid to ensuring the safety of the worker.

When the above-mentioned incline equipment is used, there are mainly the following problems. (1) As in the case of the cable crane, a wide site for installing concrete kneading equipment is required near the dam ridge top, so it is necessary to largely scrape off the mountain near the dam ridge top to secure the site, Not preferable from the viewpoint of conservation of natural environment and landscape. (2) Since the rail equipment for running the bogie must be installed between the top of the dam on the excavated surface of the dam and the riverbed, a bedrock inspection of the entire bedrock of the bottom surface of the rail equipment is performed before the start of the dam setting. This is a structure that cannot be operated unless all the rails are laid in advance from the top to the bottom. Therefore, there are restrictions in the process for starting the placing of dam concrete. In addition, as concrete pouring progresses, dam concrete pouring work cannot proceed unless the basic concrete is removed.
Therefore, the construction period inevitably becomes long.

When the above belt conveyor conveys from the riverbed, there are the following problems. (1) It is difficult to replace the belt conveyor line with the rise of the concrete placing surface, and the ground is cut off due to the laying of the belt conveyor, which inevitably prolongs the construction period.

The present invention has been made in view of the above problems of the prior art, and the object thereof is preferable from the viewpoint of conservation of natural environment and landscape, and high safety. Further, the present invention provides a material / material transport device suitable for use in construction of a dam that can significantly reduce the construction period.

[0007]

In order to achieve the above object, the material and material conveying apparatus according to claim 1 of the present invention comprises a mount mounted on a dam levee body already formed by concrete pouring. A transporter capable of mounting materials and equipment, and a hoisting device that is provided on the gantry and that winds and unwinds a linear body connected to the carrier. It is characterized in that it comprises a first leg portion and a plurality of second leg portions which can be simultaneously expanded and contracted individually.

According to a second aspect of the present invention, there is provided a material and material transporting apparatus, which is a pedestal mounted on a dam levee body already formed by concrete casting, and a carrier capable of mounting the material and equipment.
The hoist has a hoisting device that is provided at a position other than the gantry and that hoists and unwinds a linear body connected to the carrier, and a pulley that is provided on the gantry and on which the linear body is hung. Is equipped with a plurality of first leg portions that can be simultaneously expanded and contracted, and a plurality of second leg portions that can be simultaneously expanded and contracted separately from these first leg parts.

The material and material carrier according to claim 3 of the present invention has two of the above-mentioned carrier in addition to the one according to claim 1 or 2, and the hoisting device has each carrier. It is characterized in that the linear bodies connected to each other are respectively wound around the respective rotating bodies in opposite directions.

According to a fourth aspect of the present invention, there is provided a material and material transporting apparatus, wherein a pedestal placed on a dam bank body already formed by concrete casting and a material and equipment mountable on at least a lower portion of the gantry. There is a carrier that moves up and down, and a temporary receiving hopper that is provided on the gantry and that temporarily receives the material transported by the carrier, and the gantry has a plurality of simultaneously extendable and retractable first legs and these first legs. The one leg part is characterized by including a plurality of second leg parts that can be individually expanded and contracted simultaneously.

According to a fifth aspect of the present invention, in addition to the apparatus for transporting materials and equipment according to any one of the first to fourth aspects, the first leg portion is arranged in a horizontal direction with respect to the second leg portion. It is characterized in that it is provided with a lateral movement mechanism for moving to.

According to a sixth aspect of the present invention, in addition to the one according to any one of the first to fifth aspects, the first leg portion and the second leg portion have lower end portions. It is characterized in that it is formed in a tapered shape.

According to a seventh aspect of the present invention, in addition to the sixth aspect of the present invention, in addition to the sixth aspect, the tapered lower ends of the first leg portion and the second leg portion are removable seats. It is characterized by being covered with.

[0014]

According to the material / material transporting device of the first aspect of the present invention, the gantry is installed on the dam levee body already formed by concrete pouring, and the linear body is formed by the hoisting device provided on the gantry. The carrier is moved up and down by hoisting and unwinding, and the materials such as concrete that have been loaded from the riverbed side are transported on the dam levee already formed by concrete pouring. Then, one of the first leg portion and the second leg portion is in an extended state to support the gantry while the other is in a contracted state,
Concrete is cast in a plane, and the one in the contracted state is expanded to jack up the pedestal. The one in the expanded state is set to the contracted state, and the concrete in the contracted state exists. The filling material is filled in the portions where the mortar was not placed, and the hoisting device provided on the turret can be raised by stepping up the gantry upward as the concrete pouring progresses. .
As described above, the hoisting device can be raised as the concrete pouring progresses, and the rising position of the carrier can be raised. Since the equipment and materials can be transported on the dam levee, concrete kneading equipment for kneading and manufacturing concrete can be installed on the riverbed, and the number of cable cranes can be reduced. It is not necessary to largely scrape off the mountain near the top of the dam embankment to secure a site for installing equipment and cable cranes, and the opportunity for the cable crane buckets to move above workers is reduced. In addition, since it is not installed on the excavation surface but on the dam dam body that has already been formed, it is not necessary to inspect the rock surface of the excavation surface and foundation construction, and since it can be extended as the concrete pouring progresses, it can be extended from top to bottom in advance. It is no longer necessary to lay all of the above, and it is no longer necessary to remove the foundation from below as the dam concrete is placed. In addition, exchanging is easy and there is no need to cut the ground.

According to the material and material conveying device of the second aspect of the present invention, the frame is installed on the dam levee body already formed by concrete casting, and the hoisting device hoists and unwinds the linear body. Then, the transporter is moved up and down by the linear body hung on the pulley installed on the gantry, and the materials such as concrete that are loaded from the riverbed side are transported on the dam levee already formed by concrete pouring. . Then, one of the first leg portion and the second leg portion is stretched to support the gantry while the other is in the contracted state, the concrete is placed in a plane, and the one in the contracted state is In the extended state, jack up the pedestal to make the extended state into the contracted state, and fill the portion where the concrete was not placed due to the presence of the contracted state with the filler, thus The pulley can be raised by stepping up the gantry as the installation progresses. As mentioned above, the pulley can be raised as the concrete pouring progresses, and the raised position of the transporter can be raised.Therefore, it is possible to use the already installed dam dam body from the riverbed side. Since the equipment can be transported on the dam levee, concrete kneading equipment for kneading and manufacturing concrete can be installed in the riverbed, and the number of cable cranes can be reduced. It is not necessary to largely scrape off the mountain near the top of the dam embankment to secure the site for installing the cable crane, and the bucket of the cable crane is less likely to move above the worker. In addition, because it is not provided on the excavation surface but on the dam body already formed,
It is no longer necessary to inspect the rock surface of the excavated surface and construct a foundation, and since it can be extended with the progress of concrete pouring, it is not necessary to lay it all from top to bottom in advance.Furthermore, the foundation will be sequentially removed from the bottom with the progress of dam concrete pouring. There is no need. In addition, exchanging is easy and there is no need to cut the ground. Furthermore, since the pulley is provided on the gantry and the hoisting device is provided at a position other than the gantry, the total weight of the gantry including the mounted object is not increased.

According to the material / material carrier of claim 3 of the present invention, the hoisting device winds the linear bodies connected to the respective carriers on the respective rotating bodies in opposite directions. By rotating the rotating body integrally, when one carrier is raised, the other carrier is lowered. As a result, the descending carrier replaces the counterweight of the ascending carrier.

According to the material / material transporting apparatus of the fourth aspect of the present invention, the gantry is installed on the dam levee body already formed by concrete casting, and the carrier is moved up and down at least below the gantry to move the riverbed. Equipment such as concrete that has been brought in from the department side will be carried on the dam levee body that has already been formed by concrete placement, and will be temporarily received by the temporary receiving hopper provided on the frame. Then, one of the first leg portion and the second leg portion is stretched to support the gantry while the other is in the contracted state, the concrete is placed in a plane, and the one in the contracted state is In the extended state, jack up the pedestal to make the extended state into the contracted state, and fill the portion where the concrete was not placed due to the presence of the contracted state with the filler, thus The temporary receiving hopper can be raised by stepping up the gantry as the installation progresses. As described above, by using the carrier that moves up and down below the gantry, it is possible to transport the equipment and materials from the riverbed side onto the dam levee by using the dam levee that has already been placed. Kneading equipment, etc. can be installed on the riverbed, and the number of cable cranes can also be reduced.Therefore, in order to secure a site for installing the concrete kneading equipment and cable crane, a mountain near the top of the dam embankment can be secured. This eliminates the need for large scraping and reduces the chances that the bucket of the cable crane will move above the worker. Further, since the pedestal is provided with the temporary receiving hopper, the temporary receiving hopper can be easily raised as the concrete pouring progresses.

According to the fifth aspect of the present invention, there is provided the lateral movement mechanism for moving the first leg portion in the horizontal direction with respect to the second leg portion. If one of the legs is in the extended state and the other is in the contracted state, and the one in the contracted state is always moved horizontally in one direction by the lateral movement mechanism, the gantry will move sideways at each step-up. Therefore, when the side wall surface on the riverbed side of the dam body is inclined, it is possible to step back in the opposite direction to the riverbed as the concrete pouring progresses.

According to the material / material carrier of claim 6 of the present invention, since the lower ends of the first leg portion and the second leg portion are formed in a tapered shape, the first leg portion and the second leg portion can be removed from the state of being buried in concrete. Easy to pull out.

According to the apparatus for transporting materials and materials of claim 7 of the present invention, since the tapered lower end portions of the first leg portion and the second leg portion are covered with the removable sheet, The interposition makes it easier to escape from the state of being buried in concrete.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In addition, in the first embodiment, the dam levee body is formed by the RCD construction method in which concrete is widely laid in a plane or the extended layer construction construction method.

In the figure, reference numeral 1 is a dam dam body already formed by concrete pouring, and reference numeral 2 is a material and material carrier of the first embodiment installed up to the upper surface along the downstream side wall surface 4 of the dam dam body 1. Are shown respectively. As shown in FIG. 1 to FIG. 3, the material / material conveying device 2 includes a dam body 1 already formed.
A pedestal 7 provided on the upper surface on the side wall surface 4 side of the above, and a rail device 8 provided along the side wall surface 4 of the dam embankment 1 already formed so as to connect the gantry 7 and the riverbed 3. Have

The rail device 8 includes four elevating guide rails 10 which are installed on the inclined side wall surface 4 of the dam bank 1 and extending vertically in parallel with the side wall surface 4 of the dam bank 1. It is provided by being fixed by anchor bolts and brackets (not shown), and between the two rails on one side of the lifting guide rails 10, one bucket 11 which is a carrier guided by the lifting guide rails 10 is provided. The other bucket 11 whose movement is guided by the lifting guide rails 10 is also provided between the two lifting guide rails 10 on the other side. Although not shown, the lifting guide rails 10 are configured by connecting a plurality of divided bodies, and the divided bodies are connected to the upper side of an existing one and, if necessary, to the side wall surface 4 by an anchor bolt or the like. It can be extended upward by fixing it. As shown in FIG. 3, the lower part of the elevating guide rail 10 extends to the bottom of the hole 13 provided in the riverbed 3, and the upper part is slightly bent above the upper surface of the dam body. Is connected to the upper part of the mount 7.

Here, the elevating guide rail 10 has a U-shaped cross section having a guide groove 15 which is open to the bucket 11 side and extends in the lengthwise direction. And a total of four up-and-down rollers 16 on both sides of the up-and-down guide rail 10 for guiding the travel of the up-and-down guide rail 10 so that only movement along the lengthwise direction is allowed. The guide rail 10 has an upper opening 17 that opens upward while being positioned in the guide groove 15 of the guide rail 10. Further, the bucket 11 is provided with an arm 19 whose base end side is swingably supported on the surface opposite to the dam bank 1 when viewed from the wheel, and the tip end side of the arm 19 is It is connected to a wire (linear body) 20 that raises and lowers the bucket 11. An upper lid 21 can be attached to the upper portion of the bucket 11 as needed.

The bucket 11 having such a structure is used in a state where the upper lid 21 is removed when conveying materials such as concrete, and after receiving the concrete from the upper opening 17, it is hung by the wire 20. When it is lifted along the elevating guide rail 10 and reaches a predetermined upper position of the elevating guide rail 10, the movement of the upper elevating roller 16 is regulated by a regulation unit (not shown), and further lowering of the wire 20 is performed by lifting. The raising / lowering roller 16 of the above passes through the not-shown notch of the raising / lowering guide rail 10 and is disengaged from the guide groove 15. In this way, as shown in FIG. 1, the bucket 11 rotates around the upper lifting roller 16 and the upper opening 17 is directed downward, so that the upper hopper 2 to be described later installed on the pedestal 7 will be described.
It is designed to discharge concrete to 3. on the other hand,
When concrete is not transported, the upper lid 21 is attached, and equipment such as a dump truck 24 corresponding to the concrete load can be placed on the upper lid 21 and transported. .

As shown in FIG. 3, the lower part of the elevating guide rail 10 extends to the bottom of a hole 13 provided in the riverbed 3, and the hole 13 is provided with an upper opening 26 and concrete. Is provided with a lower hopper 28 that temporarily stores a certain amount of concrete and that supplies the concrete to the buckets 11 located below through the lower opening 27 that can be opened and closed for each bucket 11. Here, in the riverbed 3 at the downstream of the dam, there is provided a concrete kneading equipment (not shown) for kneading various materials in a predetermined mixing ratio to produce concrete. Hopper 28
Since concrete will be transported to the dump truck 24, it will be easier to receive concrete from the dump truck 24.
The lower hopper 28 has the upper surface of the lower hopper 28 in the hole 13
It is provided so as to be substantially aligned with the surface of the.

Next, as shown in FIGS. 1 and 2, the gantry 7 has an inner pedestal 30 having a substantially rectangular shape and extending horizontally. The inner pedestal 30 is installed in the inner pedestal 30 at the time of installation. A total of four inner leg portions (first leg portions) 31 are provided along the vertical direction in the vicinity of both ends of the side surface on the upstream side (left side in FIG. 1) and the downstream side surface, respectively. There is. The lower ends of the inner leg portions 31 are provided with inner expandable portions 32 that are tapered and are expanded and contracted by being driven by a hydraulic cylinder or the like (not shown).
All of 2 are extended or contracted at the same time, and by standing on the horizontal plane, the strokes of the same length are maintained so that the inner base 30 is kept horizontal in any state of expansion and contraction.

Further, in the gantry 7, a base portion 34 provided in parallel to the upper side of the inner base portion 30 and an inner leg portion 31 of the inner base portion 30 are not provided on the lower surface side of the base portion 34. An outer base portion 36 having a support portion 35 fixed so as to extend parallel to both side surfaces is provided, and both end surfaces of the both support portions 35 of the outer base portion 36 that are upstream and downstream during installation. Has a total of four outer legs (second leg) along the vertical direction
37 are provided with their vertical positions aligned. At the lower ends of the outer leg portions 37, outer stretchable portions 38 that are tapered and are driven by a hydraulic cylinder or the like (not shown) to stretch and contract are provided. These outer stretchable portions 38 all extend or contract at the same time. By being shortened and standing on a horizontal plane, the outer base 36
Strokes are the same length to keep them horizontal. Here, in the first embodiment, the inner stretchable portion 32 and the outer stretchable portion 38 are set such that the length at the maximum stroke thereof is larger than the thickness of two layers of the concrete surface-casting, and the maximum stroke The amount is set larger than the thickness for one layer. Further, it is covered with a detachable thick vinyl sheet 40 as shown in FIG. 4, if necessary.

Both support portions 3 of the inner base portion 30 and the outer base portion 36
A lateral movement mechanism 42 that horizontally moves the outer base 36 relative to the inner base 30 is provided between the surfaces facing each other. Each lateral movement mechanism 42
Has two upper and lower lateral movement guide rails 43 that are horizontally extended and fixed to the outer base portion 36 side. The lateral movement guide rails 43 are open to the inner base portion 30 side and have a length. It has a substantially U-shaped cross section having a guide groove 44 extending in the direction. In addition, the lateral movement mechanism 42 is located in the guide groove 44 of the lateral movement guide rail 43 while being displaced in the horizontal direction on the inner base portion 30, and only moves along the longitudinal direction of the lateral movement guide rail 43. Has a plurality of lateral movement rollers 45 for guiding the travel so that the lateral movement rollers 45 are provided in the upper and lower two rows in the same plane according to the number of the lateral movement guide rails 43. There is. Further, the lateral movement mechanism 42 includes the lateral movement guide rail 4
3 has a laterally moving jack 47 such as a hydraulic cylinder extending in the same direction on the upper side of 3.
The tubular jack body 48 is fixed to the inner base portion 30, and the rod 49 protruding from both sides of the jack body 48.
Both ends are fixed to the support portion 35 of the outer base portion 36.

In such a lateral movement mechanism 42, the lateral movement roller 45 is guided in the guide groove 44 of the lateral movement guide rail 43, so that the inner base portion 30 and the outer base portion 36 are reciprocated relative to each other in one horizontal direction. Movement is allowed, and by moving the rod 49 of the laterally moving jack 47 to one side with respect to the jack body 48, the outer base portion 36 is moved to the same side with respect to the inner base portion 30, and thus the outer base portion 36. On the other hand, the inner base portion 30 is moved so as to project to the opposite side. That is, by moving the rod 49 of the laterally moving jack 47 on the dam bank 1 to the downstream side with respect to the jack body 48, the inner base 30 is moved to the outer base 36.
To the upstream side, and the rod 49 is moved to the most upstream side with respect to the jack body 48, thereby moving the inner base portion 30 from the outer base portion 36 to the downstream side.

It should be noted that the lower end surfaces of the inner elastic portion 32 and the outer elastic portion 38 of the gantry 7 are adjusted so that the heights of the lower end surfaces match when they are both extended, and the heights of the lower end surfaces match when they are both shortened. It has become.

An upper hopper (temporary receiving hopper) 23 is attached to the frame 7. The upper hopper 23 receives the concrete conveyed by the above-mentioned bucket 11 at the upper opening 51, temporarily receives the concrete for temporary storage to some extent, and moves downward from a lower opening (not shown) that can be opened and closed as necessary. It is supplied to the dump truck 24 or the like located. The inner pedestal 30 and the outer pedestal 36 have the upper hopper 23 regardless of their relative movement positions.
Through holes (not shown) are formed so as not to interfere with concrete discharge.

Further, a hoisting device 54 having two winding cylinders (rotating bodies) 53 of the same shape arranged coaxially is placed on the gantry 7, and each winding cylinder 53 includes a speed reducer and a speed reducer. A drive source 55 composed of an electric motor is connected via a clutch 56 which is a contact / separation switching means. This clutch 56 connects both winding cylinders 53 to rotate them integrally with the driving force from the drive source 55, or releases the connection between both winding cylinders 53 to transfer the driving force from the drive source 55 to each winding cylinder. It can be transmitted to each 53 independently.

Here, in the hoisting device 54, the wires 20 are wound around the respective winding drums 53, and the payout side of these wires 20 is hung on a pulley 58 rotatably supported on the upper end of the gantry 7. , Their tips are respectively connected to the corresponding arms 19 of the lower bucket 11. In the clutch 56, the wire 20 of the one winding cylinder 53 and the wire 20 of the other winding cylinder 53 are wound in mutually opposite directions, and the one bucket 11 is positioned below the lower hopper 28 (the solid line position in FIG. 3). ), The phase of the other bucket 11 is adjusted so that the other bucket 11 reaches the position where the concrete is discharged to the upper hopper 23 (the solid line position in FIG. 1), and the two winding cylinders 53 are integrally connected. As a result, when one bucket 11 is raised, the other bucket 11 is lowered.

Next, the material / material conveying device 2 having such a configuration
The dam construction using is explained below. Dam concrete is transported from the concrete kneading equipment (not shown) provided in the riverbed 3 to the lower hopper 28 by the dump truck 24 or the like and temporarily stored. The dam levee body 1 already formed by concrete pouring is provided with the above-described equipment / material conveying device 2. In this equipment / material conveying device 2, one bucket 11 is positioned below the lower hopper 28. (At this time, the other bucket 11 is located at the upper discharge position of the upper hopper 23), the lower opening 27 on the corresponding side of the lower hopper 28 is opened for a predetermined time, and concrete is loaded into the bucket 11.

Next, the drive source 55 of the hoisting device 54 integrally rotates the two hoisting drums 53 in one direction so that the bucket 11 loaded with concrete is caused to travel along the elevating guide rails 10 and to be raised (this The other empty bucket 11 descends when rising), and is positioned above the upper hopper 23. Then, the wire 20 is further wound while the movement of the upper elevating roller 16 is regulated by the regulation means, thereby rotating the bucket 11 as described above,
The loaded concrete is dropped into the upper opening 51 of the upper hopper 23 (at this time, the other bucket 11 is located below the lower hopper 28).

When the dropping is completed (at this time, concrete is loaded in the other bucket 11 below the lower hopper 28 in the same manner as described above), the winding cylinder 53 of the hoisting device 54 is moved in the reverse direction. By rotating integrally, one of the empty buckets 11 is returned to the original state and the restricting means is released to lower the buckets (the other bucket 11 loaded with concrete rises during this lowering), and the lower hopper 28. The one bucket 11 is located on the lower side. By repeating such steps as appropriate, the concrete kneading equipment in the riverbed 3 can be removed from the dump truck 2
The concrete transported by 4 or the like is alternately transported by the both buckets 11 onto the dam bank 1 which has already been formed.

On the other hand, the concrete temporarily received by the upper hopper 23 is loaded from the upper hopper 23 into the dump truck 24 or the like on the dam bank 1. Then, the dump truck 24 is moved to the concrete pouring position on the upper surface of the dam body 1 already formed by self-propelling to pour concrete. At this time, concrete is placed on the dam bank 1 sequentially from a position farther from the material / material transporting device 2, and finally, the upper lid 21 is attached to the bucket 11 and the dump truck 24 or the like is mounted on the upper lid 21. With the equipment missing, construction will be performed around the equipment transportation equipment.
If necessary, an upper lid 21 is attached to the bucket 11 and equipment such as a dump truck 24 is mounted on the upper lid 21 and the equipment is transported by raising and lowering the bucket 11.

When the equipment such as the dump truck 24 is transferred between the upper lid 21 provided on the bucket 11 and the riverbed 3, the bucket 11 is slid into the hole 13 and the upper lid is moved. The height of 21 is adjusted to the riverbed portion 3, and a tread plate for passing equipment such as a dump truck 24 is placed on the lower hopper 28 and a gap between the lower hopper 28 and the bucket 11. Also, the bucket 11
Even when the equipment such as the dump truck 24 is transferred between the upper lid 21 and the dam embankment 1 provided in the same, the height of the upper lid 21 of the bucket 11 is adjusted to the upper surface of the dam embankment 1. The tread plate is placed in the gap between the bucket 11 and the dam bank 1.

As the concrete pouring is performed in a planar manner, the gantry is raised or stepped up layer by layer and retracted or stepped back to the upstream side layer by layer as follows. As shown in FIG.
Is a casting layer (n-1) further before the previous casting layer n.
At a predetermined position on the concrete pouring surface and close to the downstream side wall surface 4 of the dam levee 1, the relative movement direction of the inner base portion 30 and the outer base portion 36 is the upstream / downstream direction (the horizontal direction in FIG. 5 and the like). ), The outer stretchable portion 38 of the outer leg portion 37, which has been stretched, is erected. Here, a vinyl sheet 40 (see FIG. 4) covers the outer stretchable portions 38 of all the outer leg portions 37 so as to be interposed between the outer stretchable portions 38 and the concrete when the casting layer n is cast. Is provided. At this time, the gantry 7 sets the rod 49 of the laterally moving jack 47 shown in FIGS. 1 and 2 to the downstream side with respect to the jack body 48, and sets the inner pedestal 30 upstream of the outer pedestal 36. It is located on the side.
Moreover, the pedestal 7 applies a small hydraulic pressure from the contracted state to the inner leg portion 31 in which the inner elastic portion 32 is covered with the vinyl sheet 40 similar to the above, from the contracted state. And slightly abutted on the casting layer n. The above is a process {1}.

In the above state, as shown in FIG. 6, the casting layer n
Concrete is cast in a plane to form a new casting layer (n + 1) on the top. The outer stretchable portion 38 is covered with the vinyl sheet 40 over the entire length in the stretched state so as to correspond to the driving of the driving layer (n + 1). The above is a process {2}.

Next, as shown in FIG. 7, the inner leg portion 31
Is fully extended on the casting layer n, the pedestal 7 is jacked up, and at the same time, the outer leg portions 37 are contracted. At this time, the concrete of the placing layer n has been cured for 1 to 2 days due to the placing operation of the placing layer (n + 1) and the like, and has been hardened to a strength capable of supporting the gantry 7. The above is step {3}.

Then, as shown in FIG. 8, after the residual vinyl sheet (not shown) is removed in the hole 60 which is continuous with the casting layer n and the casting layer (n + 1) and which is formed through the outer leg portion 37, The same kind or more concrete or the like is filled as the filling material 61. At the same time, a reaction force is applied to the inner leg portion 31, and the rod 4 of the laterally moving jack 47 shown in FIGS.
By moving 9 to the upstream side with respect to the jack main body 48, the lateral base roller 36 and the lateral guide rail 43 guide the outer base part 36 supporting the lateral guide rail 43 to the upstream side. It is moved horizontally (at this time, the downstream side (not shown) of the inner base portion 30 projects from the outer base portion 36). In addition, by applying a small hydraulic pressure to the outer leg portion 37 from the contracted state as shown by the chain double-dashed line in FIG. 8, with the outer stretchable portion 38 covered with the same vinyl sheet 40 (not shown) as described above. It is slightly stretched and brought into contact with the casting layer (n + 1). In this way, the pedestal 7
Step-up and step-back for one casting layer are performed. The above is step {4}.

In the above state, as shown in FIG. 9, concrete is cast in a plane shape to form a new casting layer (n + 2) on the casting layer (n + 1), and then the outer leg portion 37 is attached. ,
Completely stretched on the cured casting layer (n + 1),
The pedestal 7 is jacked up, and the inner leg 31 is brought into a contracted state with it. Then, a reaction force is applied to the outer leg portion 37 to move the rod 49 of the lateral movement jack 47 shown in FIGS. 1 and 2 to the downstream side with respect to the jack body 48, thereby horizontally moving the inner base portion 30 to the upstream side. Then, the inner leg portion 31 is slightly stretched to form a casting layer (n + 2).
Abut on top. In this way, step-up and step-back for the next one cast layer of the gantry 7 are performed.
This brings the same state as in FIG. Also at this time,
Continuous to the casting layer (n + 1) and the casting layer (n + 2),
After the remaining vinyl sheet is removed, the filler is filled in the hole 63 of the inner leg portion 31 which has been removed. The above is a process {5}.

By repeating the above steps {1} to {5}, the pedestal 7 is poured from the position where it is installed on the dam bank 1 already formed by pouring the concrete. Every time the number of layers increases, the step is increased upward, and stepped back along the sloped side wall surface 4 on the downstream riverbed 3 side of the dam body 1 according to the gradient.

At this time, when the gantry 7 is stepped up and stepped back, the elevating guide rail 10 is
The connection with the gantry 7 is released, and the pedestal 7 is extended upward depending on the amount of step-up and step-back. Further, when the gantry 7 is stepped up and stepped back, the hoisting device 54 causes the one bucket 11 to move.
Is positioned below the lower hopper 28, the wire 20 is extended and the phases of the winding cylinders 53 are readjusted by the clutch 56 so that the other bucket 11 is put into the upper hopper 23 with concrete. And, as mentioned above,
Along with the progress of concrete pouring (stacking of plane pouring layers), step up and step back of the gantry 7 and extension of the elevating guide rails 10 are appropriately repeated to complete the concrete pouring of the dam bank 1. At the time of the first concrete pouring, for example, the pedestal 7 is placed in the state shown in FIG. 5 and the inner leg 31 is most shortened, and then the inner leg 31 is slightly extended. The next casting layer may be cast without step-up and step-back. Also, the vinyl sheet 40
You may open the box instead of using.

The first embodiment has the following effects. (1) The gantry 7 is installed on the dam bank 1 already formed by concrete pouring, and the hoisting device 54 provided on the gantry 7 winds and unwinds the wire 20 to raise and lower the bucket 11. , Material such as concrete that has been carried in from the riverbed 3 side is transported onto the dam bank 1 already formed by concrete placement, and one of the inner leg 31 and the outer leg 37 is in an extended state While supporting the pedestal 7 while the other is in the contracted state, concrete is placed in a plane, and the contracted state is in the expanded state and the pedestal 7 is jacked up and the expanded state is in the contracted state. The filling material 61 is filled in the hole 60 in which the concrete has not been placed due to the presence of the shortened state, and the pedestal 7 and the hoisting device 5 provided on the pedestal 7 in this way
Step 4 can be stepped up as the concrete pouring progresses. Therefore, the hoisting device 54 can be easily raised with the progress of pouring concrete, and the construction period can be shortened. Moreover, since the reaction force of the movement is taken by the weight of the gantry 7 itself, an anchor or the like is not necessary, and only the elevating guide rail 10 needs to be added.

(2) Since the inner leg 30 is provided with the lateral movement mechanism 42 for moving the outer leg 36 in the horizontal direction,
When one of the inner leg portion 31 and the outer leg portion 37 is in the extended state and the other is in the contracted state, the lateral movement mechanism 42.
Therefore, if an object in a contracted state is always horizontally moved in one direction, the gantry 7 will move laterally at each step-up, so that the side wall surface 4 of the dam bank 1 on the riverbed 3 side is inclined. In this case, the step back can be performed in the opposite direction with respect to the riverbed portion 3 as the concrete pouring progresses. Therefore, the step back work is facilitated, and the work period can be further shortened. (3) Since the lower ends of the inner leg 31 and the outer leg 37 are tapered, and are covered with the removable vinyl sheet 40, the vinyl sheet 40
With the inclusion of, it becomes extremely easy to remove from the state of being buried in concrete, and workability is greatly improved.

(4) Since the hoisting device 54 can be lifted as the concrete pouring progresses as described above, the already installed dam dam body 1 can be used to supply the materials and equipment from the riverbed 3 side. The concrete kneading equipment can be installed on the riverbed 3, and the number of cable cranes can be reduced. Also, it is not necessary to largely remove the mountain near the top of the dam embankment to secure a site for installing a cable crane. Therefore, it is preferable from the viewpoint of natural environment conservation and landscape. (5) A large amount of concrete can be transported with a relatively simple structure without requiring a large installation area.

(6) From the riverbed 3 side, equip the equipment with dam 1
Since it can be carried upward and the number of cable cranes can be reduced, the chances that the bucket or the like of the cable crane moves above the operator is reduced, which is further preferable for safety. (7) Since the equipment / material conveying device 2 is provided not on the excavation surface but on the already formed dam dam body 1, it is not necessary to inspect the excavation surface for rock mass and foundation construction, and as the concrete pouring progresses. Since it can be extended, there is no need to lay it from top to bottom in advance. Therefore,
Pouring of dam concrete can be started quickly.

(8) Since the material / material conveying device 2 is provided on the already formed dam bank 1, it is not necessary to sequentially remove the foundation from the bottom as the dam concrete is placed. Therefore, the construction period can be greatly shortened in addition to the realization of the quick start of the pouring of the dam concrete. (9) Compared with the case of carrying on a belt conveyor line,
It is easy to relocate, there is no need to cut out the ground for laying, and winter curing in heavy snow areas is unnecessary,
No more hassle with switching concrete mix. (10) By raising the gantry 7, the hoisting device 54
In addition to this, the upper hopper 23 can be raised as the concrete pouring progresses, so that the construction period can be further shortened.

(11) If the upper lid 21 is attached to the bucket 11 that can be raised and lowered, equipment such as the dump truck 24 and the like can be escaped to the upper side of the bucket 11 at the time of placing the concrete, and the equipment can be mounted and raised. Therefore, the number of auxiliary cable cranes can be reduced and the number can be reduced. (12) Since the driving force from the driving source 55 can be independently transmitted to each winding drum 53 by the clutch 56, even if the line on one side cannot be moved for some reason, the clutch on the non-movable line side By disconnecting the connection, the movable line can be operated independently. (13) The winding cylinders 53 are integrated by the clutch 56 by adjusting the phases of the wires 20 so that the winding directions are reversed and the ascending stroke of the one bucket 11 and the descending stroke of the other bucket 11 are matched. Is connected to one of the buckets 11 at the same time by the integral rotation of both winding cylinders 53
Can be raised and the other bucket 11 can be lowered,
Moreover, when the concrete-filled bucket 11 is rolled up, the empty bucket 11 that descends serves as a counterweight instead of a so-called slippery type.
The weight of is offset and the driving force of the driving source is small,
Energy saving can be achieved and cycle time can be shortened.

A second embodiment of the present invention will be described below with reference to FIG. 10, focusing on the differences from the first embodiment. In the second embodiment, each wire 20 is attached to the gantry 7.
And a hoisting device 54 for hoisting and unwinding the wire 20.
It is provided in the hole 13 formed in the. That is, two pulleys 58 are rotatably supported in parallel on the gantry 7, and two pulleys 71 in parallel are also rotatably supported on the river bed 3 side on the dam bank 1 side. Has been done,
Further, two pulleys 72 arranged in parallel are rotatably supported at an intermediate position on the elevating guide rail 10. Then, the wires 20 connected to the buckets 11 are hooked on the pulleys 58 after being hooked on the pulleys 58, and further extend downward along the elevating guide rails 10 to the hole portions 13 of the riverbed portion 3, and the hole portions 13 are formed. A pulley 71 provided therein extends in a direction away from the dam bank 1 and is wound around a hoisting device 54 installed in the hole 13.

Also in the material / material conveying device 2 of the second embodiment having such a structure, by raising the gantry 7 or the pulley 58, the raised position of the bucket 11 can be raised along with the progress of concrete pouring. it can. Therefore, the same effect as the first embodiment can be exhibited.
In addition, in the second embodiment, the pulley 58 is provided on the gantry 7, and the hoisting device 54 is a part other than the gantry 7 in the riverbed section 3.
Since it is provided on the side, the weight of the gantry 7 including the mounted object can be significantly reduced.

In the second embodiment, the case where the hoisting device 54 is provided on the riverbed portion 3 side has been described as an example, but the present invention is not limited to this, and the midway position of the elevating guide rail 10 and the dam bank body. On the other hand, it can be provided at any position such as a rock bed in the vicinity. Further, in the first and second embodiments, the hoisting device 54 or the pulley 5 is attached to the gantry 7.
8 has been described as an example, and the upper hopper 23 is further provided as an example, but the upper hopper 23 can of course be removed. On the other hand, a bucket 11 that moves up and down the elevating guide rail 10 by itself (for example, elevating guide rail 1
0 is provided with a rack gear, the bucket 11 is provided with a pinion gear meshing with the rack gear and a drive source for driving the pinion gear, and the bucket 11 is moved up and down by the rotation of the pinion gear).
It is also possible to provide only one.

Furthermore, in the above-mentioned first and second embodiments, the equipment transporting device 2 is provided along the inclined side wall surface 4 of the dam bank 1, as an example, but of course,
It is also possible to install it on a vertical wall surface that runs vertically, and in this case there is no need to step back the gantry 7,
The lateral movement mechanism 42 is unnecessary (at this time, the inner base portion 30 and the outer base portion 36 are integrated).

[0057]

According to the material / material conveying device of the first aspect of the present invention, the hoisting device can be raised as the concrete pouring progresses, and the raising position of the conveyer can be raised. As a result, equipment and materials can be transported from the riverbed side onto the dam levee by using the dam levee that has already been placed.Therefore, concrete kneading equipment for kneading and manufacturing concrete can be installed in the riverbed. Also, the number of cable cranes can be reduced. Therefore, it is not necessary to largely scrape off the mountain near the top of the dam embankment in order to secure a site for installing the concrete kneading equipment and the cable crane, which is preferable from the viewpoint of conservation of natural environment and landscape. At the same time, the chances that the bucket or the like of the cable crane moves above the worker is reduced, so that the safety is improved. Moreover, since it is not installed on the excavation surface but on the dam dam body that has already been formed, it is not necessary to perform rock mass inspection and foundation construction of the excavation surface, and it can be extended as the concrete pouring progresses. There is no need to lay everything from the bottom to the bottom. Therefore, the pouring of dam concrete can be started quickly. In addition, since the equipment and materials transportation device is installed on the dam dam body that has already been formed, it is not necessary to sequentially remove the foundation from the bottom as the dam concrete is placed, and furthermore, it is easy to relocate and No need for cutting. Therefore, the construction period can be greatly shortened in addition to the realization of the quick start of the pouring of the dam concrete.

According to the material and material conveying device of the second aspect of the present invention, the pulley can be raised as the concrete pouring progresses, and the raising position of the conveyer can be raised. Since the equipment and materials can be transported from the riverbed side onto the dam levee using the dam dam that has been installed, concrete kneading equipment for kneading and manufacturing concrete can be installed in the riverbed, and a cable crane is also available. The number of can be reduced. Therefore, it is not necessary to largely scrape off the mountain near the top of the dam embankment in order to secure a site for installing the concrete kneading equipment and the cable crane, which is preferable from the viewpoint of conservation of natural environment and landscape. At the same time, the chances that the bucket or the like of the cable crane moves above the worker is reduced, so that the safety is improved. Moreover, since it is not installed on the excavation surface but on the dam dam body that has already been formed, it is not necessary to perform rock mass inspection and foundation construction of the excavation surface, and it can be extended as the concrete pouring progresses. There is no need to lay everything from the bottom to the bottom. Therefore, the pouring of dam concrete can be started quickly. In addition, since the equipment and materials transportation device is installed on the dam dam body that has already been formed, it is not necessary to sequentially remove the foundation from the bottom as the dam concrete is placed, and furthermore, it is easy to relocate and No need for cutting. Therefore, the construction period can be greatly shortened in addition to the realization of the quick start of the pouring of the dam concrete. Further, since the pulley is provided on the gantry and the hoisting device is provided at a position other than the gantry, the weight of the gantry including the mounted object can be significantly reduced.

According to the material / material carrier of claim 3 of the present invention, since the descending carrier serves as a counterweight for the ascending carrier, the weight of the carrier is offset and the driving force of the driving source is offset. Is small and energy can be saved.

According to the material / material carrier of claim 4 of the present invention, the material / material is dammed from the riverbed side by using the dam dam body already laid by the carrier that moves up and down below the gantry. Since it can be transported on the body, concrete kneading equipment for kneading and manufacturing concrete can be installed on the riverbed, and the number of cable cranes can be reduced. Therefore, the concrete kneading equipment and cable crane can be installed. It is not necessary to largely remove the mountain near the top of the dam in order to secure the site for the operation, and the chances that the bucket of the cable crane will move above the operator will be reduced. Further, since the pedestal is provided with the temporary receiving hopper, the temporary receiving hopper can be easily raised as the concrete pouring progresses.

According to the fifth aspect of the present invention, there is provided a lateral movement mechanism in which one of the first leg portion and the second leg portion is in the extended state and the other is in the contracted state. Therefore, if the one in the contracted state is always moved horizontally in one direction, the gantry will move laterally at each step-up.Therefore, when the river wall side wall surface of the dam dam body inclines, It is possible to step back in the opposite direction to the riverbed as the concrete pouring progresses. Therefore, when step back is required, the work is further facilitated and the work period can be further shortened.

According to the material / material carrier of claim 6 of the present invention, since the lower end portions of the first leg portion and the second leg portion are formed in a tapered shape, the first leg portion and the second leg portion can be removed from the state of being buried in concrete. It becomes easy to pull out and the workability is improved.

According to the equipment transporting apparatus of claim 7 of the present invention, since the tapered lower end portions of the first leg portion and the second leg portion are covered with the detachable sheet, the sheet The interposition makes it easier to remove from the state of being buried in concrete, further improving workability.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a portion installed on an upper side of a dam bank in a material / material carrier according to a first embodiment of the present invention.

FIG. 2 is a view of the material / material carrier according to the first embodiment of the present invention as viewed from the left in FIG.

FIG. 3 is a side view schematically showing a portion of the material / material carrier according to the first embodiment of the present invention, which is installed on the lower side of the dam bank.

FIG. 4 is a front view showing an expanding / contracting portion of a gantry of the material / material conveying device according to the first embodiment of the present invention.

FIG. 5 is a side sectional view showing a step {1} of ascending operation of the gantry of the material and material transporting device according to the first embodiment of the present invention.

FIG. 6 is a side sectional view showing a step {2} of ascending operation of the gantry of the material / materials transporting apparatus according to the first embodiment of the present invention.

FIG. 7 is a side sectional view showing a step {3} of ascending operation of the gantry of the material and material transporting device according to the first embodiment of the present invention.

FIG. 8 is a side sectional view showing a step {4} of ascending operation of the gantry of the material and material transporting device according to the first embodiment of the present invention.

FIG. 9 is a side sectional view showing a step {5} of ascending operation of the gantry of the material and material transporting device according to the first embodiment of the present invention.

FIG. 10 is a side view schematically showing a material and material conveying device according to a second embodiment of the present invention.

[Explanation of symbols]

 1 Dam Embankment 2 Material Equipment 7 Stand 11 Bucket (Transporter) 20 Wire (Linear) 23 Upper Hopper (Temporary Receiving Hopper) 31 Inner Leg (First Leg) 37 Outer Leg (Second Leg) Part) 40 vinyl sheet (sheet) 42 lateral movement mechanism 53 winding drum (rotating body) 54 hoisting device 58 pulley

Front page continuation (72) Inventor Yoichi Fukumoto 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Takuro Odawara 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Hideo Imai 1-1-1, Nihombashi Muromachi, Chuo-ku, Tokyo Mitsui Miike Manufacturing Co., Ltd. In-house

Claims (7)

[Claims] 1. A pedestal placed on a dam levee body already formed by concrete casting, a carrier on which materials and equipment can be mounted, and a linear shape provided on the gantry and connected to the carrier. A hoisting device for hoisting and unwinding a body, wherein the gantry has a plurality of simultaneously extendable first leg portions, and a plurality of second leg portions at which the first leg portions are simultaneously extendable and retractable. An apparatus for transporting materials and materials, comprising: 2. A mount placed on a dam levee already formed by concrete pouring, a carrier on which equipment and materials can be mounted, a position other than the mount, and connected to the carrier. A hoisting device for hoisting and unwinding a linear body, and a pulley provided on the gantry and on which the linear body is hung, the gantry having a plurality of simultaneously extendable first leg portions, An apparatus for transporting materials and equipment, comprising: a first leg portion and a plurality of second leg portions that can be simultaneously expanded and contracted individually. 3. The hoisting device has two of the transporters, and the hoisting device is configured such that a linear body connected to each of the transporters is wound around each individual rotating body in a reverse direction. The material / material transportation device according to claim 1 or 2. 4. A gantry placed on a dam levee body already formed by concrete pouring, a carrier capable of mounting materials and equipment, and a conveyor that moves up and down at least below the gantry, and is provided on the gantry, And a temporary receiving hopper for temporarily receiving the material conveyed by the carrier, wherein the gantry has a plurality of first leg portions that can be simultaneously extended and contracted, and a plurality of first leg portions that can be simultaneously extended and contracted individually. And a second leg portion of the equipment. 5. The material and material transport according to claim 1, further comprising a lateral movement mechanism that horizontally moves the first leg portion with respect to the second leg portion. apparatus. 6. The material and material carrying device according to claim 1, wherein the first leg portion and the second leg portion are formed such that their lower end portions are tapered. 7. The material and material carrying device according to claim 6, wherein the tapered lower ends of the first leg portion and the second leg portion are covered with a removable sheet.