JP3215804B2 - Drainage culvert formation method and its equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for forming a drainage culvert underground such as a golf course and a ground.

[0002]

2. Description of the Related Art Conventionally, in order to form a drainage culvert of this type, as one example, a soil is excavated by a power shovel along a drainage culvert formation line in order to form a groove, and then the bottom is formed at the bottom of the groove. 2. Description of the Related Art There is known a construction method and apparatus in which a culvert pipe is laid, and the remaining soil, gravel and the like are charged and filled in a groove on the culvert pipe.

[0003] As another conventional example, a chain provided with an excavation blade is hung on a sprocket so as to be able to run endlessly in the front-rear direction on the front side of a self-propelled vehicle. There is known a method and apparatus for digging the soil with a shaving blade to form a groove, laying a culvert pipe at the bottom of the groove, and then charging and filling the culvert pipe with the remaining soil and gravel in the groove. Have been.

As still another conventional example, Japanese Patent Application No. 3-61664 filed by the applicant of the present invention (Japanese Utility Model Application Laid-Open No. 5-3802).
As is clear from No. 7) etc., along with the running of the prime mover, the turf is cut with a disk-shaped rotary cutter, the upper part of the soil is cut, and the soil is cut further deeper by the subsequent cut, and the cut is made. A method and an apparatus are known in which a perforated portion provided at a lower end of a portion is perforated, and a permeation filler is charged into an incision groove from a permeation filler supply section.

[0005]

However, in the first conventional example, the width of the groove to be excavated becomes large, and a large amount of residual soil is generated. . In addition, excavating a groove at a constant depth by using a shovel requires not only skill but also poor working efficiency and long working time. In particular, when constructing a place where grass is planted, such as a golf course, it is necessary to lay a protective panel along the drainage culvert formation line so as not to damage the grass with a power shovel. And it takes time. Therefore, as a result, the construction cost per total extension of construction becomes expensive. In addition, if the groove width is wide, especially in a green of a golf course, it takes a long time to recover the turf, so that the turf cannot be constructed, and the construction place is restricted.

Further, in the second conventional example, since the remaining soil during excavation scatters around and the amount of the remaining soil is large, a large amount of manpower and time are required for the recovery operation.
Therefore, as a result, the construction cost per total extension of construction becomes expensive. Although the groove width is narrower than the first conventional example, it is still as wide as 5 to 10 cm or more. , There are restrictions on the construction site.

In the third conventional example, since the incision is formed by forcibly spreading the soil,
The two side edges along the incision groove rise slightly upward, and there is almost no residual soil, so that the working time can be reduced, labor can be saved, etc., and as a result, the construction cost can be reduced. The problems of the first and second conventional examples can be solved. However, the excavated construction trace is a rolling roller (2.5t or 4t)
Even if it is compacted by using, some irregularities remain because the soil is not discharged. Although these irregularities are of little concern in most places, problems arise in places where some irregularities are not allowed, such as green golf courses.

The present invention solves the above-mentioned conventional problems. A drainage culvert can be formed by forming an incision groove having a narrow width. By forming the incision groove, it is possible to suppress the swelling after the construction and to finish it flat, and also to make it unnecessary to collect the residual soil by not discharging it to the construction site. It is possible to excavate and scoop up the soil without the need for, therefore, it is possible to obtain a good finished state, and also to reduce the working time, labor saving, etc. It is an object of the present invention to provide a drainage culvert forming method capable of obtaining versatility without being restricted by the place of construction and a device therefor.

[0009]

According to the present invention, there is provided a drainage culvert forming method according to the present invention, wherein at least one of the two sides corresponding to the incision width of the soil can be rotated by frictional resistance with the soil. A first cutter having a rotary cutter in the shape of a cut forms a continuous cut ahead of the first cutter, and, on both sides corresponding to the incision width of the soil, the other side is delayed behind the first cutter behind the friction with the soil. An incision is continuously formed by a second cutter composed of a disk-shaped rotary cutter that can be rotated by resistance, and an incision is made between the incisions on both sides by incision means forcibly advanced following the second cutter. A groove is formed, and at least the soil in the upper part in the incision groove is scooped up, and is integrated with an upper end side of a guide plate inserted into a cut side opposite to the second cutter at the rear side of the first cutter. Is discharged onto the provided receiving portion is obtained as storing.

According to another method of forming a drainage culvert according to the present invention, a first cutter having a disk-shaped rotary cutter that can rotate at least on one side of the two sides corresponding to the incision width of the soil due to frictional resistance with the soil. The cut end is formed continuously and is formed of a disk-shaped cutter that can be rotated behind the first cutter behind the first cutter and rotated by frictional resistance with the soil on the other side of the two sides corresponding to the cut width of the soil. An incision is continuously formed by the second cutter, and an incision is formed between the incisions on both sides by incision means forcibly advanced following the second cutter. Scoops up the soil, and discharges and stores it on a receiving part integrally provided on the upper end side of the guide plate inserted into the cut side opposite to the second cutter behind the first cutter. Then on A culvert pipe connected to the lower end of the incision means is laid along the bottom of the incision groove, and the infiltration groove is filled with a permeation filler by means of the permeation filler supply means, and is then rolled. is there.

A drainage culvert forming apparatus according to the present invention for achieving the above object has at least a disk-shaped rotary cutter that can be rotated by frictional resistance with soil, and one of the two sides corresponding to the cutting width of soil. A first cutter that continuously forms a cut on the side in advance and a disk-shaped rotary cutter that can rotate due to frictional resistance with the soil. A second cutter that forms a cut continuously behind the first cutter, and is forcibly advanced following the second cutter to form a cut groove between the cuts, A cutting means capable of scooping up at least the soil in the groove, a guide plate inserted into a cut formed by the first cutter, and an upper end of the guide plan at a side of the second cutter. It has a receiving portion provided in the one in which the scooping was soil by the incision means and a storage means capable of storing and discharged onto the receiving portion.

According to another aspect of the present invention, there is provided an apparatus for forming a drainage culvert, having a connecting means for connecting to a culvert pipe on the rear side of a lower end portion of the cutting means.

In still another embodiment of the present invention, there is provided a drainage culvert forming apparatus having a permeation filler supplying means for supplying a permeation filler into a cutting groove formed by the cutting means in a filling state. It is.

In each of the above structures, the cutting means includes a digging portion for digging so as to scoop up the soil between cuts formed by the first cutter and the second cutter, and a projecting portion projecting below the digging portion. An incision provided by
A piercing portion provided at a lower end portion of the cutout portion, or a digging portion for digging so as to scoop up soil between cutouts formed by the first cutter and the second cutter, and a lower end of the digging portion And a perforated part provided in the part.

According to the present invention configured as described above,
The cut on one side of the soil is formed in advance, and the cut on the other side of the soil is formed later, so that the cut can be formed in the soil neatly and formed on both sides corresponding to the cut width in the soil Since a cut groove is formed between the cuts, a drainage culvert with a narrow width can be formed.In addition, since at least the upper soil is discharged to form a cut groove, the swelling after the construction is suppressed to achieve a flat finish. In addition, since the discharged soil is stored in the storage unit while suppressing scattering of the discharged soil in the vicinity of the incision groove, it is not necessary to collect the discharged soil. Further, the first and second cutters and the cutting means can form a cut in the soil and excavate and scoop up the soil without requiring a power source.

Further, by laying the culvert pipe while forming the incision groove and further supplying the permeation filler, the formation of the incision groove, the laying of the culvert pipe, and the supply operation of the permeation filler are further performed. Can be performed continuously at once.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described. FIGS. 1 to 11 show a drainage culvert forming apparatus according to a first embodiment of the present invention. FIG. 1 is a side view showing a state where a drainage culvert is formed by being connected to a towing vehicle, and FIG. 3, FIG. 3 is an enlarged side view of a main part, FIG. 4 is a side view from the opposite side, and FIGS. 5, 6, 7, 8, 9, and 10 are AA, FIG. BB, C
-C, DD, EE, FF arrow view, FIG.
(D) is an explanatory view of a cutting groove forming step.

As shown in FIG. 1, a drainage culvert forming apparatus 1 according to the present embodiment comprises a drainage culvert forming apparatus main body 2, a culvert pipe forming apparatus 3, a towing vehicle 4, and the like.

The details of the drainage culvert forming apparatus main body 2 will be described. As shown in FIGS. 1 to 4, a supporting member 13 is fastened to a substrate 12 projecting below a supporting frame 11 by bolts, nuts and the like. It is attached so that the position in the vertical direction can be adjusted by the tool 14. A small-diameter disk-shaped rotary cutter 15 is supported at the lower front end of the support member 13. As an example, as is apparent from FIGS. 5 and 6, the support shaft 17 is inserted into the hole 16 of the support member 13,
A boss 19 of the rotary cutter 15 is fitted to the outer periphery of the intermediate portion of the support shaft 17 via a bearing 18, and a nut 21 is screwed into the screw portion 20 on both sides of the support shaft 17 inside the support member 13. 18 is fixed, and a nut 22 is screwed on the outside of the support member 13 to support the support shaft 17.
Has been fixed. Therefore, the disk-shaped rotary cutter 15 is supported via the bearing 18 so as to be able to rotate smoothly.

At the rear side of the rotary cutter 15 on the lower side of the support member 13, the base of the arc-shaped fixed cutter 23 is bolted through a spacer 24 and a spacer 55 provided integrally with one end of a liner 54 described later. It is fixed by a fastening member 25 such as a nut (see FIGS. 5 and 7). A large-diameter disk-shaped rotary cutter 26 is rotatably supported at the rear end of the lower side of the support member 13 as in the case of the disk-shaped rotary cutter 15. In particular, as is apparent from FIGS. 5 and 8, the support shaft 28 is inserted into the hole 27 of the support member 13, and the boss 3 of the rotary cutter 26 is provided on the outer periphery of the intermediate portion of the support shaft 28 via the bearing 29.
0 is fitted, a nut 32 is screwed into the screw portion 31 on both sides of the support shaft 28 inside the support member 13 and the bearing 29 is fixed, and a nut 33 is screwed outside the support member 13 and supported. The shaft 28 is fixed. Therefore, the disk-shaped rotary cutter 26 is supported via the bearing 29 so that it can rotate smoothly. Each of the rotary cutters 15 and 26 rotates by frictional resistance with the soil 80.

A small-diameter disk-shaped rotary cutter 15, an arc-shaped fixed cutter 23, and a large-diameter disk-shaped rotary cutter 26
The cutting means composed of a rotary cutter 15 and the fixed cutter 23 is one of the cuts 82 of the same depth on both sides corresponding to the cut width in the soil 80 (FIGS. 7 and 11).
(See FIG. 8 (b)), and are arranged separately on both sides so that the other cutout 83 (see FIGS. 8 and 11 (c)) can be formed by the rotary cutter 26. The cutter 23 forms one cut 82 in advance, and the rotary cutter 26 is arranged so as to be shifted in the front-rear direction so as not to overlap with each other so that the rotary cut 26 cuts the cut 83 on the other side with a delay. By setting such an arrangement, it is necessary to provide a means for preventing the cutters from being pressed outward by the repulsive force of the soil compressed upon cutting, and for pressing the cutters and the support portions so as not to be damaged. Is eliminated, and the configuration can be simplified.

In the present embodiment, a fixed cutter 23 forming one cutout 82 is used for forming a drainage culvert at a place where turf is planted, such as a golf course or a ground.
A small-diameter, disk-shaped rotary cutter 15 is arranged in front of the rotary cutter 15.
1 (see FIGS. 6 and 11 (a)). At this time, the root of the turf is easily and reliably cut, and a cut 82 deeper than the cut 81 is formed in the soil 80 by the subsequent fixed cutter 23. In doing so, the root of the turf is not hooked to prevent the turf from digging together with the soil 80, so that the turf is protected and the cuts 82 are formed in the soil 80 in an orderly manner. Since the other cut 83 having the same depth as the cut 82 uses the disk-shaped rotary cutter 26, the root of the turf can be cut easily and reliably, and the turf can be protected and the soil can be neatly arranged. A cut 83 can be formed.

At the rear side of the support member 13, rubber scraping members 36 are attached by mounting members 34 and 35 on both outer sides of the disk-shaped rotary cutter 26, and the side surfaces of the rotary cutter 26 are mounted by the scraping members 36. The soil 80 adhered to the cut 83 can be scraped off.

One side of the support member 37 is attached to the rear side of the substrate 12, and the upper part of the vertical plate 38 is attached to the other side of the support member 37 via a spacer 39 with fastening tools 40 such as bolts and nuts.
It is attached so that the vertical position can be adjusted.
The excavation part 4 is located on the front side of the middle part in the vertical direction of the vertical plate 38.
1 are provided integrally. The excavation part 41 has its front side located between the fixed cutter 23 and the rotary cutter 26, is formed in an arc shape so as to follow the curvature of the rotary cutter 26, and has a cut formed by the fixed cutter 23 and the rotary cutter 26. The upper portion 84a (see FIGS. 2, 9, and 11 (d)) of the cut groove 84 can be formed by excavating and scooping the soil 80 between 82 and 83. The excavation part 41 is brought into contact with the side surface of the disk-shaped rotary cutter 26 as necessary, and the rotary cutter 26
To prevent the rotary cutter 26 and the support portion from being damaged by being pressed by the pressure. The lower part of the excavation part 41 in the vertical plate 38 has a front end edge formed in a blade shape to form an incision part 42, and at the lower end part of the incision part 42, a shell-shaped perforation part 43 whose front end part tapers is provided. It is provided integrally. Then, the lower portion 84b of the incision groove 84 is formed by pushing and spreading the lower soil 80 excavated so as to be scooped up by the excavation portion 41 by the incision portion 42, and the incision groove to be a culvert pipe installation space by the perforation portion 43. 84 can be formed (FIGS. 9 and 11).
(D)).

A connecting member 44 for assisting the drilling is connected to the rear end of the perforated portion 43 so as to allow vertical rotation. A plastic perforated pipe is connected to the rear end of the connecting member 44. Is connected.

The soil 80 excavated and scooped up by the excavation section 41 is stored in the storage means 46. As an example, as shown in FIGS. 1 to 3 and FIGS.
Arms 48 and 49 are erected on both front and rear sides of the receiving portion 47,
A ring-shaped part 50 integrally provided at the upper end of the arm part 48 supports the rotary cutter 26 on the support member 13.
And is fixed by tightening the nut 33 and the ring-shaped portion 5 integrally provided at the upper end of the arm portion 49.
1 is fitted to a bolt of a fastener 40 for fixing the vertical plate 38 to the support member 37, and is fixed by fastening the fastener 40. The receiving portion 47 is set so that the rear side and the front side of the inner edge thereof are in contact with the vertical plate 38, the excavated portion 41 and the support member 13, and the intermediate portion is slightly separated from the disc-shaped rotary cutter 26. At the rear inner edge, the soil rises along the vertical plate 38 and the excavation part 41 and closes the space on the front side of the vertical plate 38 and the support member 37 and the upper rear side of the rotary cutter 26. A fall prevention plate 52 of 80 is provided integrally, and is located on the side of the rotary cutter 26 at the rear side of the fixed cutter 23, that is, above the cut 82 formed by the fixed cutter 23 at the opposite side of the rotary cutter 26. A guide plate 53 to be inserted is provided integrally.

Therefore, the soil 80 excavated by the excavation section 41 and scooped up is received by the guide plate 53 in the receiving section 47.
Of the rotary cutter 2 without being discharged to the surface below
6 and is guided to the inner surface of the guide plate 53 to be discharged onto the receiving portion 47. The spacer 55 at one end of the liner 54 is attached to the inside of the support member 13 by the fastener 25 as described above, and a ring-shaped portion 56 integrally provided at the other end of the liner 54 is a boss portion of the rotary cutter 26. 30. The soil 80 excavated and scooped by the excavation section 41 as described above is prevented from escaping upward by the liner 54 and the scraping member 36 rising up above the liner 54, and the soil 80 is prevented by the liner 54. Is prevented from entering the rotation support portion of the rotary cutter 26. Therefore, the soil 80 excavated and scooped up by the excavation section 41 as described above is surely discharged onto the receiving section 47 through the space between the rotary cutter 26 and the guide plate 53. Then, the soil 80 discharged onto the receiving portion 47 is
2 prevents falling backward and is reliably stored on the receiving portion 47.

As shown in FIGS. 1 and 2, the supporting frame 11 supports a hopper 57 for a water-permeable filler (hydrophobic material). The water-permeable filler hopper 57 is formed in a funnel shape that is gradually narrowed from the upper end opening to the lower end opening, and a discharge port 58 is formed in the lower end opening,
An opening / closing door 59 is provided at the discharge port 58, and the opening / closing door 59 is opened and closed via power transmission means (both not shown) by operation of a handle. Filler hopper 5 for water permeability
A water-permeable filler (hydrophobic material) 60 is accommodated in the upper end opening 7 and discharged downward by opening the opening / closing door 59. Below the water-permeable filler hopper 57, a water-permeable filler inserter 61, which receives the water-permeable filler 60 discharged from the water-permeable filler hopper 57, rotates horizontally at the upper rear side of the vertical plate 38. It is mounted so as to be removable and removable. The permeating filler charging device 61 is formed in a funnel shape, and has lower outlets 62a, 62b.
Is inserted into the incision groove 84, and the discharge port 62 a is set in the middle of the incision groove 84, and the discharge port 62 b is set in the upper part of the incision groove 84. The outlets 62a and 62b are opened and closed by operating a door (not shown).

At the rear of the drainage culvert forming device main body 2,
The culvert pipe forming device 3 is installed in a recess 63 formed in the soil 80. The culvert pipe forming device 3 is a reel 6
4, a belt-shaped perforated sheet (not shown) made of a flexible plastic such as polyester or polyethylene is wound so as to be able to be fed out, and the leading end thereof is connected to the front connector 44 via the pipe forming portion 65. Have been. The perforated sheet pulled out from the reel 64 by the connecting member 44 with the advancement of the drainage culvert forming device main body 2 is connected to the pipe forming portion 6.
5 is formed in a perforated culvert pipe 45,
4 at the bottom 84c.

The drainage culvert forming apparatus main body 2 is connected to the towing vehicle 4 by a connecting device 66. As an example, an intermediate portion of the auxiliary plate 76 is connected to the support member 12, and the auxiliary plate 76
Between the upper and lower parts of the towing vehicle 4 and the connecting parts 67 and 68 provided at the upper and lower parts of the rear side of the towing vehicle 4, respectively.
And 70 are rotatably connected at both ends. One swing arm 69 is formed so as to be extendable and contractible by a turnbuckle method, and the other swing arm 70 is formed to have a fixed length. A connecting portion 71 is fixed to the swing arm 70, and the tip of the piston rod of the lifting cylinder 73 and the base of the lifting cylinder 73 that are hydraulically actuated are rotated by the connection portion 71 and the support portion 72 of the towing vehicle 4. It is connected as possible. Then, in accordance with the adjustment of the swing arm 69 and the expansion and contraction of the lifting cylinder 73, the swing arms 69 and 70 are vertically rotated in a parallel state to raise and lower the entirety of the drainage culvert apparatus main body 2, and adjust the height. So that it can be held at that height. The lifting cylinder 73 can be expanded and contracted using pressure oil used in the towing vehicle 4. The towing vehicle 4 uses an endless rubber belt 75 on the grounding surface of the crawler device 74 so as not to damage the turf during traveling.

Next, a drainage culvert forming method according to an embodiment of the present invention will be described based on the drainage culvert forming apparatus having the above-described configuration. As described above, first, the rotary cutter 15,
The height of the fixed cutter 23 and the rotary cutter 26 is adjusted, and the excavation part 41, the incision part 42, and the perforated part 4 are adjusted.
Adjust the height of 3. Next, at the start of the drainage culvert,
The recess 63 and the like are formed, and the rotary cutter 15, the fixed cutter 23, the rotary cutter 26, the excavation section 41, the cutout section 42, and the perforated section 43 are inserted into the groove or the like at a predetermined depth by operating the lifting cylinder 73. , The culvert pipe forming device 3
Install inside. Then, the leading end of the culvert pipe 45 drawn out from the reel 64 of the culvert pipe forming device 3 and formed by the pipe forming portion 65 is connected to the rear end of the connecting tool 44.

When the preparation is completed in this way, the towing vehicle 4 is driven to pull the drainage culvert forming apparatus main body 2. Accordingly, first, as shown in FIG. 6 and FIG. 11A, the rotary cutter 15 forcibly advanced at one upper layer portion of both sides corresponding to the incision width in the soil 80 is attached to the soil 80. The cut 81 is formed while rotating by frictional resistance,
Cutting grass roots. Subsequently, as shown in FIGS. 7 and 11B, the cut 82 is formed deeper than the cut 81 by the fixed cutter 23 forcibly advanced following the rotary cutter 15. At this time, since the root of the turf is cut by the preceding rotary cutter 15 as described above, the cut 81 can be formed neatly in the soil 80 without damaging the turf. Subsequently, as shown in FIGS. 8 and 11C, the rotary cutter 26 which is adjacent to the side and is forcibly advanced subsequently is rotated by frictional resistance with the soil 80 and corresponds to the incision width. Cut 8 on the other side of both sides
Form 3 At this time, the provision of the member 36 for scraping off the soil adhering to the side surface of the disc-shaped rotary cutter 26 can prevent the rotary cutter 26 and its supporting portion from being damaged by the earth pressure, and can also prevent the cut 83
Can be formed orderly. Subsequently, by excavating the soil 80 between the cuts 82 and 83 by scooping up the soil 80 between the cuts 82 and 83 by the subsequent excavated part 41 forcibly advanced, the upper part 84a of the incised groove 84 is formed, and the incised part 42 and the perforated part are formed. 9 and FIG. 1
As shown in FIG. 1D, a lower portion 84b of the cut groove 84 and a lower portion 84b having a substantially circular cross section are formed.

At this time, the soil 80 excavated and scooped by the excavation section 41 is
The guide plate 53 is pushed upward from the space between the guide plate 53 and the guide plate 53, and is discharged and stored on a receiving portion 47 opposite to the rotary cutter 26 as shown in FIG. At this time, the soil 80 that is scooped up and pushed up by the excavation section 41 as described above is regulated by the rotary cutter 26 and the guide plate 53 so as not to go under the receiving section 47, that is, not to be discharged to the ground surface. Therefore, it can be surely discharged onto the receiving portion 47 and stored. The soil 80 discharged onto the receiving portion 47 is prevented from falling forward by the ring-shaped portion 56 of the liner 54, the scraping member 36, and the like, and is prevented from falling backward by the fall prevention plate 52.

Subsequently, as shown in FIG. 1, the culvert pipe 45 connected to the connecting tool 44 on the rear side of the perforated portion 43 is pulled and laid on the bottom 84c of the cut groove 84, and the filler hopper 57 for permeating water is formed. The water-permeable filler 60 is introduced into the cutout groove 84 from the outlet 62 a of the water-permeable filler filler 61. If the amount of the permeating filler 60 is insufficient, the upper outlet 62b
Then, the water-permeable filler 60 is put into the cut groove 84. After filling the cut groove 84 with the permeation filler 60 in this way, the crawler device 74 of the towing vehicle 4 with the drainage culvert forming device main body 2 removed from above the permeation filler 60, or the same as another working vehicle The construction of the drainage culvert is completed by rolling with the crawler device. At this time, since the upper portion 84a of the incision groove 84 excavates and discharges the soil 80 as described above, the upper edge portion of the incision groove 84 hardly bulges and can be flattened by rolling. .

In the drainage culvert formed as described above, the incision groove 84 can maintain a certain gap without being closed by filling with the water-permeable filler 60, and is filled in the incision groove 84. Underground or surface rainwater or the like flows into the perforated culvert pipe 45 through the permeating filler 60, and is further drained through the perforated culvert pipe 45. As a result, it is possible to obtain a geological golf course, a ground, and the like excellent in the drainage effect.

Next, a second embodiment of the present invention will be described. FIG. 12 is a schematic explanatory view showing a main part of a drainage culvert forming apparatus according to a second embodiment of the present invention.

In the first embodiment, cuts 82 and 83 are formed in a portion corresponding to the upper part of the cut groove 84 by the fixed cutter 23 and the rotary cutter 26, and the soil 80 in this portion is scooped by the excavation part 41. The soil 80 is excavated so as to be raised, and the incision 42 and the perforated portion 43 open the soil 80 so that the soil 80 is spread out below. On the other hand, in the present embodiment, the fixed cutters 23 and the rotary cutter 26 form the cuts 82 and 83 reaching the vicinity of the bottom of the cut groove, and the excavation 41 forms the cuts 82 and 8.
The soil 80 between the three is excavated and scooped up to the bottom of the incision groove 84, and other configurations and construction methods are the same as those in the first embodiment.

The rotary cutter 15 and the fixed cutter 2
3 may be replaced with a rotary cutter having the same shape as the rotary cutter 26. In addition, the width and depth of the incision groove 84 and the depth of scooping the soil 80 by excavation can be appropriately selected. In addition, the present invention can be variously modified without departing from the basic technical concept thereof.

[0039]

As described above, according to the present invention, the cut on one side of the soil is formed in advance, and the cut on the other side of the soil is formed later, so that the cut is formed in the soil in an orderly manner. In addition, since the incision groove is formed between the cuts formed on both sides corresponding to the incision width in the soil, a drainage culvert of a narrow width can be formed, and at least the upper part of the soil is drained to discharge the incision groove. Is formed, it is possible to suppress the swelling after the construction and to make the surface flat, and since the soil to be discharged is stored in the storage means, it is not necessary to collect the residual soil to be discharged. Therefore, a good finished state can be obtained, and the cost can be reduced by shortening the working time and saving labor. Also,
The first and second cutters and the cutting means can form a cut in the soil and excavate and scoop up the soil without requiring a power source. Therefore, versatility can be obtained without being restricted by the location of construction. Further, as described above, the cut on one side is formed in advance, and the cut on the other side is formed later, thereby preventing damage to the cutter and its support due to earth pressure and simplifying the support structure. be able to.

Further, by laying a culvert pipe while forming an incision groove and further supplying a permeating filler, an operation of forming an incision groove, laying a culvert pipe, and further supplying a permeating filler material. Can be performed continuously at once.
Therefore, the working efficiency can be further improved.

Further, the cutting means has an excavating portion for excavating so as to scoop up the soil between the cuts formed by the cutting means, an incising portion projecting below the excavating portion,
A piercing portion provided at a lower end portion of the incision portion, or a digging portion for digging so as to scoop up the soil between the cutouts formed by the cutting means, and a digging portion provided at the lower end portion of the digging portion By providing the perforated portion, the soil can be excavated and scooped up without the need for a power source, and the location can be prevented from being restricted.

[Brief description of the drawings]

FIG. 1 is a side view showing a drainage culvert forming apparatus according to a first embodiment of the present invention, in which a drainage culvert is formed.

FIG. 2 is a perspective view of a main part of the drainage culvert forming apparatus in a state where the drainage culvert is formed.

FIG. 3 is an enlarged side view showing a main part of the drainage culvert forming apparatus.

FIG. 4 is an enlarged side view of the drainage culvert forming apparatus, viewed from a side opposite to a main part.

FIG. 5 is a view of the drainage culvert forming apparatus, taken along the line AA of FIG. 4;

6 shows the drainage culvert forming apparatus, and is a view taken in the direction of arrow BB in FIG.

7 shows the drainage culvert forming apparatus, and is a view taken in the direction of arrows CC in FIG.

8 shows the drainage culvert forming apparatus, and is a view taken along the line DD in FIG.

9 shows the drainage culvert forming apparatus, and is a view taken along the line EE in FIG.

10 shows the same drainage culvert forming apparatus, and is a view as viewed in the direction of arrows FF in FIG.

FIGS. 11 (a) to 11 (d) are views for explaining a cutting groove forming step by the drainage culvert forming apparatus.

FIG. 12 is a schematic explanatory view showing a main part of a drainage culvert forming apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 drainage culvert forming device 2 drainage culvert forming device main body 3 culvert pipe forming device 4 towing vehicle 15 disk-shaped rotary cutter 23 circular-shaped fixed cutter 26 disk-shaped rotary cutter 36 scraping member 41 excavation part 42 cut-out part 43 Perforated part 44 Connector 45 Underdrain pipe 46 Storage means 57 Permeable filler hopper 61 Permeable filler filler 66 Connecting device 80 Soil 81 Cut 82 Cut 83 Cut 84 Groove

Claims (7)

(57) [Claims] 1. A cut edge is formed continuously by a first cutter having a disk-shaped rotary cutter that can rotate at least on one side of the both sides corresponding to the cut width of the soil due to frictional resistance with the soil. Then, of the two sides corresponding to the incision width of the soil, the cut edge is continuously formed on the other side by a second cutter composed of a disk-shaped rotary cutter that can be rotated behind the first cutter by frictional resistance with the soil behind the first cutter. The cutting groove is formed between the cuts on both sides by cutting means forcibly advanced following the second cutter, and at least the upper soil in the cutting groove is scooped up. A drainage culvert forming method for discharging and storing on a receiving portion integrally provided on an upper end side of a guide plate inserted into a cut side opposite to the second cutter behind the first cutter. 2. A cut edge is formed continuously by a first cutter having a disk-shaped rotary cutter that can rotate at least on one side of the two sides corresponding to the cut width of the soil due to frictional resistance with the soil. Then, of the two sides corresponding to the incision width of the soil, the cut edge is continuously formed on the other side by a second cutter composed of a disk-shaped rotary cutter that can be rotated behind the first cutter by frictional resistance with the soil behind the first cutter. The cutting groove is formed between the cuts on both sides by cutting means forcibly advanced following the second cutter, and at least the upper soil in the cutting groove is scooped up. At the rear of the first cutter, the guide plate inserted into the cut on the opposite side of the second cutter is discharged and stored on a receiving portion provided integrally with the upper end of the guide plate, and the lower end of the cutting means Connected to A drainage culvert construction method in which a culvert pipe is laid along the bottom of the above-mentioned incision groove, and the incision groove is filled with a permeation filler by means of a permeation filler supply means, and is compacted. 3. A first cutter having a disk-shaped rotary cutter capable of rotating at least by frictional resistance with soil, wherein a cut is formed continuously on one of two sides corresponding to an incision width of soil. And a disk-shaped rotary cutter that can rotate due to frictional resistance with the soil. Of the two sides corresponding to the incision width of the soil, the cut side is continuously formed on the other side behind the first cutter behind the first cutter. A second cutter to form;
It is forcibly advanced following the second cutter,
A cutting means for forming an incision between the cuts on both sides and capable of scooping up at least the upper soil in the incision, a guide plate inserted into the cut formed by the first cutter, The cutter has a receiving portion integrally provided on the side of the upper end of the guide plan on the side of the cutter, and the soil scooped up by the cutting means can be discharged onto the receiving portion and stored. A drainage culvert forming device provided with a storage means. 4. The drainage culvert forming apparatus according to claim 3, further comprising means for connecting a culvert pipe behind the lower end of the cutting means. 5. The drainage culvert forming apparatus according to claim 3, further comprising a water-permeable filler supply means for supplying a water-permeable filler in a filled state into the cut groove formed by the cutting means. 6. The incision means includes a first cutter and a second cutter.
An excavation part for excavating so as to scoop up the soil between the cuts formed by the cutters, an incision part provided below the excavation part, and a perforation part provided at the lower end of the incision part The drainage culvert forming apparatus according to any one of claims 3 to 5, further comprising: 7. The cutting means comprises a first cutter and a second cutter.
The drainage culvert according to any one of claims 3 to 5, further comprising: a digging portion for digging so as to scoop up the soil between cut edges formed by the cutters; and a perforated portion provided at a lower end portion of the digging portion. Forming equipment.