JP2002363952A - Filter material scattering machine for fill dam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability while suppressing the loss ratio of filter materials. SOLUTION: This filter material scattering device 11 for a fill dam comprises a vehicle body 12 travelable on the ground, a filter material hopper 13 provided in the front of the vehicle body, a pair of bar feeders 16 and 16 as filter material carrier means carrying the filter materials 15 fallen from an opening 14 in the bottom part of the filter material hopper to the rearward of the vehicle body 12, a screw auger 17 installed near the carrier end position of the bar feeders in the rearward of the vehicle body 12, and a compaction body 19 called screed horizontally supported in air so as to be clamped between support arms 18 and 18 in the rearward of the screw auger and extending rearward from the vehicle body 12, and a pair of scattering width limiting members 20a and 20b disposed in the downward of the compaction body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter material dispenser for a fill dam used in the construction of a fill dam.

[0002]

2. Description of the Related Art Dams are broadly classified into concrete dams and fill dams depending on the material of the embankment, and the fill dams are further classified into uniform type, zone type and the like according to the structure of the embankment.

[0003] Among them, the uniform dam is composed of small-grained soil material having small water permeability, so that most of the embankment body is easy to inspect and construct, but at the same time, pore water pressure generated during construction dissipates. Therefore, rainfall has a large effect on construction.

On the other hand, as shown in FIG. 4, the zone type fill dam 1 is provided with an impermeable zone 2 called a core made of an impermeable material (water impermeable material), and semi-permeable zones 3, 3 on both sides thereof in order. Since the water-permeable zones 4 and 4 are respectively arranged and the width of the water-impermeable zone 2 is narrower than that of the uniform dam, pore water pressure during construction is easily dissipated, and the erecting speed can be increased.

[0005] Therefore, a zone type is often adopted for a dam having a high bank height.

[0006] In such a zone-type fill dam, a material excellent in water-impermeability and workability is mainly used as a core material in the impervious zone 2, while a semi-permeable zone 3, 3 uses a material inside the core. A material having a function of preventing the outflow of fine particles is used as a filter material. Specifically, a riverbed sediment with a maximum particle size of about 75 to 150 mm, weathered rock from a raw stone mountain or purchased crushed stone is scattered to a thickness of 20 mm. ~ 40
cm.

[0007]

Here, as can be seen from the figure, the semi-permeable zones 3, 3 in which the filter material is disposed.
As in other zones, the width of the semi-permeable zone becomes narrower as it goes upward, but the width of the semi-permeable zone is much narrower than the other zones. For example, the base is 4 to 5 m, and the top is about 1 m. Not a few.

Therefore, when the filter material is scattered, the filter material may protrude out of the semi-permeable zones 3 and 3, so that the production cost is not limited in the case where the riverbed sediment and the weathered rock of the ore mountain are used. In the case of using crushed stone with high purity, it is important to reduce the loss rate of the filter material.

On the other hand, since it is difficult to scatter the filter material with a width of about 1 m using a normal bulldozer, it is inevitable to use a backhoe or a small bulldozer.

[0010] However, if an attempt is made to suppress a decrease in the loss rate of the filter material as described above while employing such a construction method, there has been a problem that the workability of spraying is extremely reduced.

Further, when the filter material is scattered, the filter material is sequentially laminated with the above-mentioned scattered thickness. However, a new filter material is laid on the previously scattered filter material. When dispensing, in order to ensure water permeability at the interface, it is necessary to pre-raise the surface of the filter material previously scattered.

However, in the prior art, such work was separately performed using a lake dozer or the like, which again caused a decrease in the workability of the work of spraying out the filter material.

The present invention has been made in view of the above circumstances, and has as its object to provide a filter material dispensing machine for a fill dam which is excellent in workability while suppressing a loss rate of the filter material.

[0014]

According to a first aspect of the present invention, there is provided a filter material dispenser for a fill dam according to the present invention. A filter material hopper provided in front of the filter material, filter material transport means capable of transporting the filter material dropped from a bottom opening of the filter material hopper to the rear of the vehicle body, and a transport end position of the filter material transport means In the vicinity, the rear side of the vehicle body is installed so as to be orthogonal to the central axis along the traveling direction of the vehicle body, and the spiral direction of the spraying screw is configured to be opposite to the central axis as a boundary. A screw auger, and a compaction plate which is horizontally supported by a support arm extending rearward from the vehicle body behind the screw auger and capable of moving up and down, are provided inside. Below the compacted body such that the compacted body and the filter material spreading space extending between the lower surface of the compacted body and the ground surface are respectively limited at a pair of side positions separated by a predetermined separation width. And a pair of spreading width restricting members arranged in, and at least one of the pair of spreading width restricting members is configured such that the separation width is variable, and according to the separation width, The compaction width of the compaction plate is variable.

Further, in the filter material dispersing machine for a fill dam according to the present invention, the filter material conveying means is arranged side by side at a position facing the center axis, and one of the pair of distributing width limiting members is disposed. They are arranged along the central axis.

Further, the filter material dispenser for a fill dam according to the present invention has a predetermined raking member attached to the front of the vehicle body so as to be rotatable around a horizontal axis and to be held at a predetermined rotation angle. It is.

In the filter material dispensing machine for a fill dam according to the present invention, a pair of distributing width limiting members are arranged below the compacted body in a state of being separated by a predetermined separation width, so that the compacted body can be compacted. The filter material spreading space extending between the lower surface and the ground surface is limited at a pair of side positions where the spreading width limiting member is disposed, and further, at least one of the pair of spreading width limiting members. This is configured so that the above-mentioned predetermined separation width is variable.

Therefore, while the filter material conveyed by the filter material conveying means is scattered to one side or both sides by the screw auger, the scattered width is equal to the pair of scatter width limiting members described above. Is automatically restricted to the separation width of the filter material.Thus, by adjusting the separation width of the pair of spreading width limiting members to a desired width, it is possible to freely set the spreading width of the filter material. Become.

The configuration of the pair of spreading width limiting members is arbitrary as long as they are configured so that the above-described separation width is variable. For example, any of the spreading width limiting members is a compacted body. May be arranged at an arbitrary position on the lower surface of the compacting body, but instead of such a configuration, one of the spreading width limiting members is fixed on the lower surface of the compacted body, and only the other spreading width limiting member is tightened. It is also possible to configure so that it can slide sideways along the lower surface of the compact.

As the filter material conveying means, for example, a bar feeder having the same function as a belt conveyor for circulating an endless belt can be used.

In the case where the filter material conveying means are arranged side by side at a position facing the center axis and one of the pair of spreading width limiting members is disposed along the center axis, the spreading width is limited. Is narrowed, one of the filter material conveying means is stopped, and only the other filter material conveying means is driven.

With this arrangement, the filter material is supplied rearward only from the other filter material conveying means, and then the splay width limiting member disposed on the central axis and a desired separation width from the splay width limit member. It is scattered between the diverging width limiting member disposed only at a position spaced apart from the scattered width regulating member, and it is possible to cope with an extremely narrow separation width of, for example, 1 m.

In the case where a predetermined rake member is attached to the front of the vehicle body so as to be rotatable around a horizontal axis and to be held at a predetermined rotation angle, the rake member is turned in the direction of lowering and lowering. And run in such a state.

In this way, the surface of the filter material previously scattered can be raked in advance by the rake member, so that a separate operation using a lake dozer as in the related art becomes unnecessary.

Further, by keeping the rotation angle of the raking member, in other words, the lowering angle at a desired angle, the raking depth can be adjusted.

Incidentally, in running for mere movement other than the spouting operation, if the rake member is turned upward so as to jump up, no trouble occurs in moving and running.

[0027]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a filter material dispensing machine for a fill dam according to the present invention. It is to be noted that the same reference numerals are given to components and the like that are substantially the same as those in the conventional technology, and description thereof is omitted.

FIG. 1 is a view showing a filter material dispenser 11 for a fill dam according to the present embodiment, wherein (a) is an overall side view, and (b) is a horizontal sectional view along the line AA. is there.
FIG. 2 is a partial perspective view of the filter material dispenser 11 for a fill dam according to the present embodiment.

As can be seen from these figures, a filter material dispensing machine 11 for a fill dam according to the present embodiment includes a vehicle body 12 capable of traveling on the ground, and a filter material hopper provided in front of the vehicle body. 13 and the filter material 1 dropped from the bottom opening 14 of the filter material hopper
A pair of bar feeders 16, 16 as a filter material transporting unit for transporting the rear of the vehicle body 12, a screw auger 17 installed near the transport end position of the bar feeder and behind the vehicle body 12, A compacted body 19 called a screed, which is horizontally supported so as to be sandwiched by support arms 18 extending rearward from the vehicle body 12 behind the screw auger and rearward from the vehicle body 12, is disposed below the compacted body. Pair of spreading width limiting members 20
a and 20b.

The filter material hopper 13 is capable of charging and storing the filter material 15 as shown by the arrow in the figure. For example, the filter material hopper 13 can always store the filter material 15 from a dump truck traveling forward at the same speed. Has become.

Here, the bottom opening 14 is provided at the bottom of the filter material hopper 13 as described above, and the filter material 15 dropped from the bottom opening is conveyed rearward by the bar feeders 16 and 16. Has become.

The screw auger 17 is installed so as to be orthogonal to the central axis 21 along the running direction of the vehicle body 12, and the helical direction of the screw for spreading is reversed around the central axis. The above-described bar feeders 16 and 16 are arranged side by side at opposing positions with the central axis 21 interposed therebetween.

As can be seen clearly in FIG. 3, the compacting body 19 is provided with compacting plates 31a to 31d which can be moved up and down, and the lower surface of the compacting body 19 is provided through a bottom opening 32 of the compacting body 19. The filter material 15 scattered in the filter material divergence space extending between the filter material 15 and the ground surface 33 can be compacted.

Here, the compaction plates 31a to 31d not only have the elevating function for compaction as described above, but also can adjust the compaction width by laterally moving each other. For example, if the width of each of the compaction plates 31a to 31d is 1 m, the compaction width can be extended to 4 m by expanding and moving them sideways. In addition,
FIG. 3 (a) shows only the left side of the filter material dispenser 11 for a fill dam, so that the overall width that can be compacted is twice 4 m, that is, 8 m.

The spreading width limiting member 20a and the spreading width limiting member 20b are respectively disposed at the center axis 21 and at a position separated from the center axis by a predetermined distance, and the lower surface of the compacted body 19 and the ground surface And the filter material dispersing space extending between the pair is restricted at a pair of side positions separated by a predetermined separation width.

Here, the spreading width limiting member 20a is detachably fixed to the lower surface of the compaction body 19, while the spreading width limiting member 20b is laterally moved along the lower surface of the compaction body 19. By sliding, the spreading width limiting members 20a and 2a
The separation width of 0b can be set to a desired width, and the compaction widths of the compaction plates 31a to 31d described above are adjusted according to the separation width.

The spout width limiting members 20a, 20b are provided with locking projections 22a, 22b projecting upward, respectively, as shown in FIG.
By locking the a and 22b on the front surface of the compacting body 19, it is possible to move forward while abutting on the ground as the filter material dispensing machine 11 for a fill dam travels.

On the other hand, as can be seen from the side view of FIG. 1, a raking member 23 is attached to the front of the vehicle body 12 so as to be rotatable around a horizontal axis and to be held at a predetermined rotation angle. The surface of the scattered filter material can be agitated to a desired depth.

The raking member 23 can be composed of, for example, a shaft attached to the front of the vehicle body 12 so as to be rotatable around a horizontal axis, and a number of raking pieces extending from the shaft in a comb shape.

In order to disperse the filter material 15 using the filter material dispenser 11 for a fill dam according to the present embodiment, the filter material disperser 11 for a fill dam is moved forward, and the same speed is applied in front of the filter material dispenser 11. Filter material 15 from a dump truck traveling on a hopper 1 for filter material
Put in 3.

Then, the bar feeders 16 are driven to convey the filter material 15 backward. Here, when the spreading width of the filter material 15 is wide, the spreading width limiting members 20a and 20b are removed.

In this manner, the bar feeders 16, 1
The filter material 15 conveyed in 6 is spread to both sides by a screw auger installed near the conveyance end position, and then compacted below the compaction body 19 by compaction plates 31a to 31d.

On the other hand, when the embankment of the semi-permeable zones 3 and 3 progresses and becomes narrower, the central axis 21 is adjusted to fit the width, for example, as shown in FIG. Along with the spreading width limiting member 20a, the spreading width limiting member 20b is disposed on the lower surface of the compacted body 19 on the left side in the traveling direction, and only the bar feeder 16 on the left side in the traveling direction is driven, The driving of the other bar feeder 16 is stopped.

Thus, the filter material 15 is
It is conveyed only from the bar feeder 16 on the left side in the traveling direction. While the filter material 15 is scattered to the left by the screw auger 17, the scattered width is, as shown in FIG. 3 (a), the spill width limiting member 20a and the spill width limiting member 20b. Is automatically limited to the gap.

As shown in FIG. 3B, the filter material 15 spouted with the sprinkling width limited as described above is compacted by the raising and lowering operation of the compaction plates 31a to 31d. The compaction widths of the compaction plates 31a to 31d are determined by the spreading width limiting member 20a and the spreading width limiting member 20.
It is previously adjusted to the separation width of b.

On the other hand, prior to the operation of distributing the filter material 15, a raking operation by the raking member 23 is performed. That is, the raking member 23 is pivoted in the direction of lowering and lowering, and the pivoting angle is appropriately adjusted to adjust the raking depth in advance, and the filter damper 11 for the fill dam is run in such a state.

In this way, the surface of the filter material previously scattered can be raked by the rake member 23 in advance.

As described above, according to the filter material dispenser 11 for a fill dam according to the present embodiment, the filter material 15 conveyed by the bar feeder 16 is moved to the left side in the traveling direction by the screw auger 17. While being scattered, the spilled width is automatically limited to the separation width between the spilled width limiting members 20a and 20b, and thus the pair of spilled width limiting members 20a and 20b.
By adjusting the separation width of the filter material 15 to a desired width, it is possible to freely set the spreading width of the filter material 15.

Therefore, the filter material 15 is, for example, 1
Even in a situation where the filter material 15 needs to be spread over a very narrow width such as m, it is possible to greatly improve the workability while suppressing the loss rate of the filter material 15.

Further, according to the filter material dispensing machine 11 for a fill dam according to the present embodiment, the raking member 23 is rotatable around the horizontal axis and can be held at a predetermined rotating angle in front of the vehicle body 12. Since the filter member is attached, the surface of the filter material that has been scattered in advance can be raked by the rake member 23 in advance. Also, by keeping the rotation angle of the raking member 23, in other words, the angle of lowering and lowering, at a desired angle, it becomes possible to adjust the raking depth.

That is, even if a separate construction machine such as a lake dozer is not used as in the prior art, the water permeation at the interface when the new filter material is sprinkled over the previously spouted filter material. Nature can be secured.

In running for mere movement other than the spouting operation, if the rake member 23 is turned upward so as to jump up, there is no hindrance to the running.

In this embodiment, the spreading width limiting member 20a
Is fixed on the lower surface of the compacting body 19, and only the other spreading width limiting member 20b can be slid laterally along the lower surface of the compacting body 19, but instead, the spreading width limiting member is limited. Both the members 20a and 20b may be arranged at an arbitrary position on the lower surface of the compacting body 19, and the center of the spreading width of the filter material 15 may be aligned with the central axis 21 of the filter material dispensing machine 11 for a fill dam. . In this case, both of the bar feeders 16, 16 may be driven.

[0054]

As described above, according to the filter material dispenser for a fill dam according to the present invention, the width at which the filter material is dispensed is automatically restricted to the separation width of the pair of distribution width restricting members. Thus, by adjusting the separation width of the pair of spreading width limiting members to a desired width, the spreading width of the filter material can be freely set.

Therefore, even in a situation where the filter material has to be spread over a very narrow width, for example, 1 m, it is possible to greatly improve the workability while suppressing the loss rate of the filter material.

[0056]

[Brief description of the drawings]

FIG. 1 is a view of a filter material dispenser for a fill dam according to the present embodiment, wherein (a) is an overall side view, and (b) is a horizontal cross-sectional view along line AA.

FIG. 2 is a partial perspective view of a filter material dispenser for a fill dam according to the present embodiment.

FIG. 3 is a view showing the operation of the filter material dispenser for a fill dam according to the present embodiment, wherein (a) is a horizontal sectional view, and (b).
Is a vertical sectional view along the line BB.

FIG. 4 is a sectional view showing a fill dam according to the related art.

[Explanation of symbols]

REFERENCE SIGNS LIST 11 filter material dispenser for fill dam 12 vehicle body 13 filter material hopper 14 bottom opening of filter material hopper 15 filter material 16 bar feeder (filter material transporting means) 17 screw auger 18 support arm 19 compacted bodies 20a, 20b Outer width limiting member

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ota Chika 1-6-11 Uesugi, Aoba-ku, Aoba-ku, Sendai, Miyagi Pref. 12 Obayashi Corporation Kyushu Branch

Claims (3)

[Claims] 1. A vehicle main body that can travel on the ground, a filter material hopper provided in front of the vehicle body, and a filter material dropped from a bottom opening of the filter material hopper are placed behind the vehicle body. The transportable filter material transporting means, and the transporting filter material transporting means is provided near the transport end position and at the rear of the vehicle main body so as to be orthogonal to a central axis along the traveling direction of the vehicle main body. A screw auger configured so that the spiral direction of the screw for dispensing at the boundary is reversed, and a support arm that is horizontally behind the screw auger and extends rearward from the vehicle body and is vertically supported and vertically movable. A compacted body having a plate provided therein, and a pair of lateral positions in which a filter material spreading space extending between a lower surface of the compacted body and a ground surface is separated by a predetermined separation width. A pair of spreading width limiting members arranged below the compacted body so as to be limited respectively, and the separation width of at least one of the pair of spreading width limiting members is variable. And a compacting width of the compacting plate is made variable according to the separation width. 2. The apparatus according to claim 1, wherein said filter material conveying means are arranged side by side at positions facing each other across said central axis, and one of said pair of spreading width limiting members is arranged along said central axis. Filter material dispenser for fill dam. 3. A filter damper for a fill dam according to claim 1, wherein a predetermined rake member is attached to the front of the vehicle body so as to be rotatable around a horizontal axis and to be held at a predetermined rotation angle.