JP3495850B2 - Underdrain drain pipe burying method and apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to the burial of an underdrain drainage pipe.
Regarding the device .

[0002]

2. Description of the Related Art In order to measure the growth of crops and paddy rice and to improve the efficiency of harvesting work in the rainy season, controlling the dryness of the soil in the fields is an important issue. In the case of paddy fields, the amount of water drawn into paddy fields is adjusted according to the growth of paddy rice and changes in climate (for example, the rainy season and the dry season), but this alone cannot sufficiently control soil dryness. In particular, when the soil is viscous and has poor drainage, or when the height is low and water easily flows in from the surroundings, it is not possible to sufficiently control the dryness of the soil simply by adjusting the surface water. Therefore, conventionally,
A trench is dug at an appropriate position in the field, a culvert drainage pipe is buried at the bottom of this trench, and a rice husk is filled on the culvert drainage pipe so as to cover the culvert drainage pipe to form an infiltration layer, and further The soil dryness in the fields is adjusted by backfilling the soil forming the cropping layer. According to the above method, since the underdrain drainage pipe is covered with rice husks,
Since the penetration of surface water is improved, the drainage by the underdrain can be promoted, and as a result, the drying of the fields is promoted, so that the fields can be efficiently dried in a short period if necessary. become.

[0003]

However, in the above-mentioned conventional method, since the permeation layer is formed of rice husks, the rice husks corrode with the passage of time and the permeation proceeds in proportion to the progress of the corrosion. There was a problem that the layer had poor permeability. The above-mentioned problems can be solved by replacing the above-mentioned rice husks with new rice husks in an appropriate cycle.However, in order to replace the rice husks, trench digging, rice husk filling, and backfilling work are performed within the range where the drainage pipe is buried. It is not an effective solution because it is very cumbersome, time consuming and expensive to carry out. The present invention shows the above-mentioned to solve the problems, after burying, unnecessary underdrain pipe buried Replacement permeation layer
The purpose is to provide a device .

[0004]

In order to achieve the above-mentioned object, an underdrain drainage pipe burying device according to the present invention comprises means for excavating land to form a rough groove, side surfaces of the excavated rough groove, and A groove digging machine having a means for leveling the bottom surface to finish the groove,
A drain pipe supply means for continuously laying an underdrain drainage pipe at the groove bottom as the groove bender progresses, and pellets are heated to foam, and the granular foam after foaming is continuously filled on the underdrain drainage pipe. And a filling means for forming a permeation layer.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the underdrain pipe buried 設装 location according to the present invention with reference to an embodiment shown in the accompanying drawings. FIG. 1 is a schematic side view of an underdrain drainage pipe burying device according to the present invention, FIG. 2 is a partially enlarged view of a part of filling means in the underdrain drainage pipe burying device shown in FIG. 1, and FIG.
1 is a sectional view taken along the line AA in FIG. 4, FIG. 4 is a sectional view taken along the line BB in FIG. 1, FIG. 5 is an enlarged view of the soil portion in FIG. 4, and FIG.
7 is a sectional view taken along line C-C in FIG. 7 and FIG. 7 is an enlarged view around the guide member of the underdrain drainage pipe burying device of FIG. 1. Reference numeral 1 in the figure indicates an underdrain drainage pipe burying device according to the present invention. This underdrain drainage pipe burying device 1 is composed of a trenching machine 2 and a filling means 30 for forming a permeation layer S.

(Description of Grooving Machine) The trenching machine 2 has a bucket type excavating means 3, a groove finishing means 5, a pipe supplying means 10, and a perforated vinyl sheet supplying means 20 for supplying a perforated vinyl sheet at its rear portion. And a backfill means 7. The bucket type excavating means 3 comprises upper and lower sprockets 3a and 3b and a chain 3c wound endlessly between the sprockets 3a and 3b. The chain 3c
A plurality of automatic hoisting buckets 3d are attached to, and when the chain 3c is rotationally driven, the buckets 3d roughly excavate the soil to form a rough groove. The groove finishing means 5 is provided behind the bucket type excavating means 3. The groove finishing means 5 is provided with a pair of left and right side surface finishing blades that expose the soil leaking from the side surfaces of the rough groove and level the rough groove side surfaces symmetrically in the longitudinal direction thereof. A bottom surface finishing blade for smoothing the bottom surface of the rough groove is provided at its lower end, and the rough groove formed by the bucket type excavating means 3 is smoothed to finish the groove. The pipe supply means 10 comprises a reel 12 around which a drainage pipe 11, which may be a corrugated pipe with a hole, is wound and stored. The reel 12 is rotatably supported by a shaft 13 fixed to a support plate (not shown) provided in the groove excavator 2. The drain pipe 11 supplied from the pipe supply means 10 is guided by the two guide members 31, 32 to the bottom of the groove after being finished by the groove finishing means 5. The vinyl sheet supply means 20 comprises a reel 22 in which a perforated vinyl sheet 21 is wound and stored. The reel 22 includes a shaft 23 fixed to a support plate (not shown) provided in the excavator 1.
It is rotatably supported by. The porous vinyl sheet 21 supplied from the vinyl sheet supply means 20 is also guided along the surface of the groove after being finished by the groove finishing means 5 by the two guide members 31 and 42 described above. The two guide members 31 and 32 described above are provided at the rear of the trench machine 2. As shown in FIG. 7, one guide member 31 is provided immediately behind the groove finishing means 5, and guides the porous vinyl sheet 21 on the lower surface thereof and the drain pipe 11 on the upper surface thereof into the grooves. . Further, the other guide member 32 is provided at the lower end of the supply unit 50 of the filling means 30 which will be described later. The guide member 32 has a substantially U-shape, and as shown in FIG. 5, the drainage pipe 11 is maintained at the bottom of the groove on the lower surface thereof and the porous vinyl sheet 21 is formed on the side surface of the groove. A material for forming the permeation layer S is supplied from the filling means 30 while being maintained on the side surface. By this guide member 32, the porous vinyl sheet 21 is maintained along the side surface of the groove until the permeation layer S is formed, and the guide member 3 is advanced as the underdrain drainage pipe burying device 1 is advanced.
The part opened from 2 is folded toward the upper surface of the permeation layer S one after another to wrap the drainage pipe 11 and the permeation layer S (FIG. 6).
reference). The backfill means 7 has its front part covering the upper part of the bucket type excavation means 3, collects the soil excavated by the bucket 3d of the bucket type excavation means 3, and wraps it with the drain pipe 11 in the perforated vinyl sheet 21. The collected soil 8 is backfilled on the permeation layer S.

(Explanation of Filling Means) This filling means 30 is
The transfer unit 40 and the supply unit 50 are provided. Transfer unit 40
Is disposed above the engine 2a of the trench machine 2 and behind the drain pipe supply means 10, and the supply unit 50 is disposed behind the drain pipe supply means 10.

(Transfer Section) As shown in FIG. 2, the transfer section 40 has a transfer pipe 41 extending from above the engine 2a to the supply section 50. This transfer pipe 41 is a fixed pipe 4.
1a and a flexible floating tube 41b are connected in series. A hopper 42 for supplying raw material is provided on the fixed tube 41a.
Is attached. A raw material introduction opening (no reference numeral) is formed in the mounting portion of the fixed tube 41a to which the hopper 42 is attached, and the raw material M1 of the non-corrosive material, which may be preferably a pellet, is fixed from the hopper 42 through this raw material introduction opening. It is introduced into the pipe 41a. A rotary shaft 43 is inserted inside the fixed tube 41a, and a screw conveyor 44 is attached to a portion of the rotary shaft 43 corresponding to the raw material introduction opening. A driven pulley 45 is provided at the end of the rotary shaft 44 protruding from the fixed pipe 41a. A belt 46 is stretched around the driven pulley 45 and the drive pulley 2b provided on the output shaft of the engine 2a.
The rotary shaft 43 includes the pulleys 2b and 45 and the belt 46.
The raw material M1 supplied from the hopper 42 by the screw conveyor 44 is rotatively driven by the power from the engine 2a via the feed pipe 41a in the downstream direction of the fixed pipe 41a. Further, an exhaust gas intake opening (no reference numeral) is formed in a portion of the fixed pipe 41a downstream of the screw conveyor 44. An exhaust pipe 2c from the engine 2a is connected to the exhaust gas intake port, and exhaust gas from the engine 2a enters the fixed pipe 41a through the exhaust gas intake port and the fixed pipe 4c.
It is configured to flow from 1a to the supply unit 50 via the floating tube 41b. This allows the screw conveyor 4
The raw material M1 sent by 3 is sent to the supply unit 50 by the flow of exhaust gas. The floating tube 41b has one end connected to the fixed tube 41a and the other end connected to the upper portion of the supply unit 50. As described above, the floating pipe 41b is made of a flexible material, and when the work of burying the underdrain drainage pipe is completed, the bucket type excavating means 3, the groove finishing means 5, the backfilling means 7, the pipe supplying means 10, and the porous material. It is configured so that it can be bent when the supply part 50 of the filling means 30 together with the vinyl supply means 20 is rotated and stored upward (FIG. 7C).
reference).

(Supply Unit) The supply unit 50 comprises a cylindrical body 53 whose upper end is closed by a disc 51. This tubular body 53
Are arranged rearward of the vehicle from the groove finishing means 5 and extend downward from the position above the backfilling means 7, that is, toward the inside of the groove. The cylindrical body 53 has a cylindrical upper portion and a tapered lower portion. As shown in FIG. 3, a plurality of passage forming plates 54 are provided at appropriate intervals above the cylindrical body 53, and the passage forming plates 54 form a substantially spiral passage P.
Is formed. Further, an exhaust pipe 55 is provided in the tubular body 53. The exhaust pipe 55 is provided so as to penetrate the disc 51 and the plurality of passage forming plates 54, and communicates the space below the spiral passage P in the tubular body 53 with the outside of the tubular body 53. As described above, the end of the transfer pipe 41 is connected to the upper part of the tubular body 53. As a result, the raw material M1 is supplied from the transfer section 40 to the inside of the tubular body 53 by the exhaust gas. The exhaust gas and the raw material M1 are cylindrical bodies 53.
Is sent to the lower side of the tubular body 53 through the spiral passage formed in the upper part of the. By the way, since the exhaust gas flowing through the raw material M1 has a very high temperature, the raw material M1 is transferred to the transfer pipe 41.
While passing through the spiral passage of the tubular body 53, it is heated by the exhaust gas and foams. Hereinafter, the raw material after foaming is referred to as foam M2. After passing through the spiral passage P of the tubular body 53, the exhaust gas is exhausted to the outside through the exhaust pipe 55. However, the foamed body M2 falls directly below the tubular body 53, and the tubular body It is guided to the lower tapered portion of 53 and supplied into the groove (see FIGS. 4 and 5). Further, as shown in FIG. 4, a closing lid 57 that can be opened and closed by an operating lever 56 is provided at the lower tapered portion of the tubular body 53, and the closing lid 57 is closed at the end of the underdrain drainage pipe burying work. Therefore, the foam M2 is prevented from being supplied to the groove more than necessary. Further, at the lower end of the tubular body 53, an adjusting plate 59 whose vertical position can be adjusted by an adjusting bolt 58 is provided, and the height of the foam M2 supplied into the groove by the adjusting plate 59, that is, Limit the height of the permeation layer S.

(Operation of Underdrain Drain Pipe Embedding Device) Hereinafter, the operation of the underdrain drain pipe burying device constructed as described above will be described with reference to FIG.
Will be described with reference to. First, the user is shown in FIG.
As shown in FIG. 5, the tip of the drain pipe 11 is pulled out from the drain pipe supply means 10, and the tip of the drain pipe 11 is fixed to an appropriate portion such as the drain passage 61 defined by the U-shaped steel 60. Further, the front end of the porous vinyl sheet 21 is pulled out from the vinyl sheet supply means 20, and the porous vinyl sheet 21 is fixed to, for example, the side surface of the gathering path 62. still,
Reference numeral 63 in the drawing denotes a valve device. A valve body (not shown) is provided at the tip of the valve device 63. The valve body is
The drainage pipe 11 enters the drainage pipe 11 and opens according to the operation of the lever 64 to communicate the drainage pipe 11 with the drainage passage 61, and closes the drainage pipe 11 with the drainage passage 61 for communication. Cut off. In addition, the user can use the hopper 4 of the transfer section 40 of the filling means 30.
The raw material M1 is put in 2, the engine of the trench digging machine 2 is driven, and the filling means 30 is operated. Then, the filling means 30
Waits for the raw material M1 to be foamed to supply the foamed granules M2 into the groove and to start forming the permeation layer S on the drain pipe 11, and then the bucket type excavating means 3 and the backfilling means 7 are operated, The ditcher 2 is moved forward (see FIG. 8 (b)). When the groove excavator 2 is moved forward while operating each of the above means, the bucket type excavating means 3 successively grinds the soil to form rough grooves, and the groove finishing means 5 smoothes the side surfaces and the bottom surface of the rough grooves. The drainage pipe 11 is drawn out one after another from the drainage pipe supply means 10, and the perforated vinyl sheet 21 is supplied from the vinyl sheet supply means 20 along the inner surface of the groove so as to cover the drainage pipe 11. Further, from the filling means 30 to the foam M2
Are successively supplied above the drain pipe 11 to form the permeation layer S, and at the same time, both sides of the vinyl sheet 21 are bent so as to cover the upper surface of the permeation layer S to wrap the drain pipe 11 and the permeation layer S. . Then, the soil 8 is further backfilled on the porous vinyl sheet 21 enclosing the drainage pipe 11 and the permeation layer S by the backfilling means 7. This underdrain drainage pipe burying work is continuously performed while the excavator 2 is moved forward while operating each means (FIG. 8).
(See (b)). Then, when the work of burying the underdrain drainage pipe for a predetermined distance is completed, the bucket type excavating means 3, the groove finishing means 5, the pipe supplying means 10, the perforated vinyl sheet supplying means 20 for supplying the perforated vinyl sheet, the backfilling means 7, and The supply section 50 of the filling means 30 is rotated upward with the upper sprocket 3a of the bucket type excavation means 3 as an axis, these means are removed from the groove, and the remaining portion is filled with soil to bury the underdrain drainage pipe. The process ends (see FIG. 8C).

(Other Application Examples) The porous vinyl sheet used in the above-mentioned embodiments includes:
Preferably, a sheet obtained by cutting several pieces of vinyl used in a vinyl house or the like and fusing them with a roller having a large number of heating pins on the outer surface while making a large number of holes and cutting them into a groove width can be used. . The reel 22 of the perforated vinyl sheet supply means 20 preferably stores a wide perforated vinyl sheet folded in the width direction, and may be configured to supply the folded perforated vinyl sheet while unfolding. Further, the thin film that wraps the permeation layer S together with the drainage pipe 11 is not limited to the vinyl sheet, and when the permeation layer L is formed of a material that easily scatters, it is possible to prevent the scattering of these materials and has good permeability. Any thin film may be used. Further, if the permeation layer S is formed by the hard material scattered, the vinyl sheet feeding means 20 is needed household.

[0012]

According to the underdrain drainage pipe burying device of the present invention having the above-described structure , the land is excavated to form the rough groove.
And the side and bottom of the excavated rough groove
Grooving machine having means for finishing the
Drain pipes that are continuously laid under the trench according to the
The feeding means and the pellets are heated to cause foaming, and the granules after foaming
Foam is continuously filled on the underdrain drainage pipe to form an infiltration layer
And a filling means for a underdrain pipe embedded in the groove bottom, between the soil backfilled above the underdrain pipe, non-rot
Since it is possible to form the permeation layer composed of the granular foam which is an edible material, the material forming the permeation layer does not corrode over time. Therefore, once implemented, there is an effect that it is not necessary to replace the permeation layer thereafter. Furthermore , since a series of work for burying the underdrain drainage pipe can be continuously performed, the burying work becomes easy and does not require manpower.

[Brief description of drawings]

FIG. 1 is a schematic side view of an underdrain drainage pipe burying device according to the present invention.

FIG. 2 is a partial enlarged view of a part of filling means in the underdrain drainage pipe burying device shown in FIG.

3 is a cross-sectional view taken along the line AA in FIG.

4 is a sectional view taken along line BB in FIG.

FIG. 5 is an enlarged view of the soil portion in FIG.

6 is a cross-sectional view taken along line CC of FIG.

7 is a partially enlarged view of the vicinity of the guide member in the underdrain drainage pipe burying device of FIG. 1. FIG.

8 (a) to (c) are views showing an operating state of the underdrain drainage pipe burying device according to the present invention with time.

[Explanation of symbols]

1 Underdrain drainage pipe burying device 2 ditcher 2a engine 2b pulley 2c exhaust pipe 3 bucket type excavation means 3a Sprocket (upper side) 3b sprocket (lower side) 3c chain 3d automatic jumping bucket 5 Groove finishing means 7 Backfilling means 8 backfill soil 10 Pipe supply means 11 drainage pipe 12 reel 13 axes 20 Perforated vinyl sheet supply means 21 Perforated vinyl sheet 22 reels 23 axes 30 filling means 31 Guide member 32 Guide member 40 transfer section 41 Transfer tube 41a Fixed tube 41b floating tube 42 Hopper for raw material supply 43 rotation axis 44 screw conveyor 45 Driven pulley 46 belt 50 supply section 51 disk 53 Cylindrical body 54 passage forming plate 55 Exhaust pipe 60 U steel 61 drainage 62 Road 63 valve device 64 lever S Penetration layer P spiral passage M1 raw material (pellet) M2 foam (M2)

Continuation of the front page (56) References Japanese Unexamined Patent Publication No. 47-25913 (JP, A) Japanese Patent Publication No. 6-51964 (JP, B2) Actual No. 56-55340 (JP, Y2) (58) Fields investigated (Int .Cl. ⁷ , DB name) E02B 11/00-11/02

Claims (2)

(57) [Claims] 1. A groove excavator having means for excavating land to form a rough groove, and means for evenly finishing the side and bottom surfaces of the excavated rough groove to finish the groove, and according to the progress of the groove bender. A drainage pipe supply means for continuously laying an underdrain drainage pipe at the bottom of the groove and a pellet for heating and foaming, and the granular foam after foaming is continuously filled on the underdrain drainage pipe to form an infiltration layer An underdrain drainage pipe burying device comprising: 2. The underdrain drainage pipe burying device according to claim 1 , further comprising a porous thin film supply means for supplying the porous thin film so as to surround the permeation layer formed of the granular foam.